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Cable Tunnels電纜隧道
HK Electric is the first power company in Hong Kong to build cable tunnels in its transmission system With its generating source on Lamma Island which is at the south-western corner of the supply territory the use of cable tunnels helps transmit electricity to the load
centres on the northern shore of Hong Kong Island without disturbing the hilly terrain In addition to being environmentally-friendly the tunnels also protect the cables from external interferences thus enhancing the supply reliability
Nam Fung Parker Cable Tunnel one of the longest cable tunnels in the world南風至柏架電纜隧道是世界最長的電纜隧道之一
港燈是香港首間在輸電系統上採用電纜隧道的電力公司由於港燈的發電廠位於港島西南面的南丫島透過電纜隧道可以在不影響自然景觀的情況下將電力輸送至港島北面沿岸的負荷中心這樣做既環保又可避免電纜受外來因素影響有助提高供電服務的可靠性
過去電力的輸送主要是靠跨越山坡的 132千伏架空高壓電線隨著香港的蓬勃發展及對電力需求的迅速增長港燈遂興建南丫發電廠輸電壓亦增至
275千伏由於架空高壓電線在視覺上有欠美觀加上因佔用土地而限制未來的發展因此政府不贊同在港島區興建更多架空電線地底電纜便成為唯一實際的選擇
1
2
In the past electricity was transmitted over the mountains by 132kV overhead lines With the development of Hong Kong and the rapid increase in electricity demand Lamma Power Station was constructed with the transmission voltage enhanced to 275kV As overhead lines were unsightly and their existence has restricted large corridors of land from future development the government was not in favour of building more overhead lines on Hong Kong Island Underground cables therefore became the only practical choice
Traditionally underground transmission cables are installed under the carriageways In view of the narrow roads on Hong Kong Island and the many existing underground services the traditional method would often cause severe traffic interruption and great inconvenience to the public as well as visual disruption to country parks on Hong Kong Island To overcome these adverse impacts HK Electric began in the 80s to study the feasibility of using cable tunnels in the planning of new transmission system projects
First cable tunnel in Hong Kong ndash Wah Fu-Bowen Cable Tunnel 香港首條電纜隧道 mdash華富至寶雲電纜隧道
地底電纜傳統上均敷設於路面之下但鑑於港島道路狹窄及地底存有多種不同的服務設施該種傳統的敷設電纜方法往往做成嚴重的交通阻塞及為公眾帶來不便此外建造工程更會破壞港島
部份景色怡人的郊野公園環境為避免這些不良影響港燈在八十年代便開始研究在計劃興建新輸電系統時使用電纜隧道的可行性
3
Cable Tunnels of HK Electric
Currently there are six cable tunnels in the Companyrsquos transmission system The first tunnel was completed in 1988 connecting Wah Fu Portal in the south-western area and Bowen Portal in the north-central area of Hong Kong Island Inside this tunnel two circuits of 275kV fluid-filled Kraft paper insulated cable have been installed They are part of the Lamma Power Station to Bowen Substation circuits
The second tunnel was built in 1993 connecting Nam Fung Portal in the central part and Parker Portal in the north-eastern part of Hong Kong Island The tunnel runs 57km long and is one of the longest cable tunnels
in the world Inside this tunnel two circuits of 275kV fluid-filled Polypropylene Laminated Paper (PPLP) insulated cable have been installed They are part of the Nam Fung Road Switching Station to Parker Substation circuits
In both tunnels provisions have been made for additional transmission circuits
The other four cable tunnels are
- Tin Wan-Wah Fu Cable Tunnel
- Cyberport-Wah Fu Cable Tunnel
- Yung Shue Wan Cable Tunnel
- Pak Kok Tsui Cable Tunnel
Cable tunnels of HK Electric港燈電纜隧道位置圖
Wah Fu-Bowen Cable Tunnel (about 31km)
Nam Fung-Parker Cable Tunnel (about 57km)
Tin Wan-Wah Fu Cable Tunnel (about 08km)
Cyberport-Wah Fu Cable Tunnel (about 08km)
Yung Shue Wan Cable Tunnel (about 02km)
Pak Kok Tsui Cable Tunnel (about 01km)
華富至寶雲電纜隧道（長約 31 公里）
南風至柏架電纜隧道（長約 57 公里）
田灣至華富電纜隧道（長約 08 公里）
數碼港至華富電纜隧道（長約 08 公里）
榕樹灣電纜隧道（長約 02 公里）
北角嘴電纜隧道（長約 01 公里）
1
2
3
4
5
6南丫島
Lamma Island
香港島
Hong Kong Island
華富 Wah Fu
寶雲 Bowen
柏架 Parker
南風 Nam Fung
21
3
4
6
5
田灣 Tin Wan
數碼港 Cyberport
北角嘴 Pak Kok Tsui 華富回旋處
Wah Fu Roundabout
雞籠灣水塘道
Kai Lung Wan Reservoir Road
南丫發電廠
Lamma Power Station
南丫風采發電站 Lamma Winds
榕樹灣 Yung Shue Wan
港燈電纜隧道 目前港燈輸電系統共有六條電纜隧道首條電纜隧道於一九八八年落成連接港島西南面的華富入口至中北部的寶雲入口隧道內敷設有兩組由 275
千伏充液牛皮紙絕緣電纜組成的電路為連接南丫發電廠至寶雲電力分站的部分電路
第二條電纜隧道於一九九三年落成連接港島中部的南風入口至東北面的柏架入口隧道全長五點七公里是全世界最長的電纜隧道之一隧道內敷設有兩組由 275千伏充液聚丙烯薄膜夾心牛皮紙絕緣電纜組成的電路為南風道開關站至柏架電力分站的部分電路
兩條電纜隧道均有預留充足設施以應付日後增設輸電電路的需要
其餘四條電纜隧道是
- 田灣至華富電纜隧道
- 數碼港至華富電纜隧道
- 榕樹灣電纜隧道
- 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m米 56m米 mdash 70m米 54m米 mdash 59m米
2002 2005 2005
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Volcanic Rock火成岩
Granite花崗岩
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Blast傳統鑽土及爆石
February 2000(First blast on28 June 2000)
May 2004(First excavation on21 October 2004)
May 2004(First excavation on15 October 2004)
2000年2月(首次爆石於2000年6月28日 )
2004年5月(首次挖掘於2004年10月21日 )
2004年5月(首次挖掘於2004年10月15日 )
July 2001 September 2005 October 20052001年7月 2005年9月 2005年10月
Wah Fu-Bowen Nam Fung-Parker Tin Wan-Wah Fu TECHNICAL DATA Cable Tunnel Cable Tunnel Cable Tunnel技術資料 華富至寶雲電纜隧道 南風至柏架電纜隧道 田灣至華富電纜隧道
Length 3100m米 5700m米 810m米 長度
Elevation 120m米 mdash 128m 米 51m米 mdash 85m 米 211m米 mdash 443m 米 海拔
Longitudinal Profile 縱剖面 05 05 06 06 NW
29
SE
Tunnel route under隧道沿途路線
MtGough Mt Kellett歌賦山 奇力山
Mt Nicholson Jardinersquos Lookout Mt Butler Mt Parker聶歌信山渣甸山 畢拉山 柏架山
Tin Wan Hill Road Mt Kellett Wah Fu Road 田灣山道奇力山華富道
Cross-section 橫切面
48m
285m
44m
265m
40m
30m
Shape形狀
Horse-shoe馬蹄鐵形
Circular 圓形
Horse-shoe馬蹄鐵形
Soil Condition 土壤情況
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Construction Method 建造方法 Drill amp Blast
傳統鑽土及爆石 Tunnel Boring隧道機械鑽挖
Drill amp Blast 傳統鑽土及爆石
Commencement建造開始日期
March 1986 (First blast on 8 July 1986) 1986年3月 (首次爆石於 1986年7月8日 )
April 1990 (Tunnel boring on 26 February 1991) 1990年4月 (隧道鑽挖於 1991年 2月26日開始 )
November 1996 (First blast on 28 May 1997) 1996年11月 (首次爆石於 1997年5月28日 )
Tunnel Breakthrough隧道貫通
Completion落成
July 1987 1987年7月
1988
March 1992 1992年3月
1993 1998
December 1997 1997年12月
4
3100m米 5700m米 810m米
120m米 mdash 128m米 51m米 mdash 85m米 211m米 mdash 443m米
1988 1993 1998
Horse-shoe馬蹄鐵形
Circular圓形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Drill amp Blast傳統鑽土及爆石
Tunnel Boring隧道機械鑽挖
Drill amp Blast傳統鑽土及爆石
March 1986(First blast on8 July 1986)
April 1990(Tunnel boring on26 February 1991)
November 1996(First blast on28 May 1997)
1986年3月(首次爆石於1986年7月8日 )
1990年4月(隧道鑽挖於1991年 2月26日開始 )
1996年11月(首次爆石於1997年5月28日 )
July 1987 March 1992 December 19971987年7月 1992年3月 1997年12月
Cyberport-Wah Fu Yung Shue Wan Pak Kok Tsui Cable Tunnel Cable Tunnel Cable Tunnel數碼港至華富電纜隧道 榕樹灣電纜隧道 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m 米 56m米 mdash 70m 米 54m米 mdash 59m 米
062 7 E
045SE NE
NW SWW
Pokfulam Road Victoria Road薄扶林道 域多利道
North of Lamma Power Station南丫發電廠北面
North Lamma Island near Pak Kok Tsui 南丫島北近北角嘴
215m
25m
215m
25m 385m
253m
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Granite花崗岩
Volcanic Rock 火成岩
Drill amp Blast 傳統鑽土及爆石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
July 2001 2001年7月
September 2005 2005年9月
October 2005 2005年10月
February 2000 (First blast on 28 June 2000) 2000年2月 (首次爆石於 2000年6月28日 )
May 2004 (First excavation on 21 October 2004) 2004年5月 (首次挖掘於 2004年10月21日 )
May 2004 (First excavation on 15 October 2004) 2004年5月 (首次挖掘於 2004年10月15日 )
2002 2005 2005
5
Benefits of Cable Tunnels
Compared to the traditional open trench method for installing transmission cable the cable tunnel method offers many advantages
Environmental Benefits
By going under rather than over the top of mountains cable tunnels avoid damage to country parks and eliminate any visual impact to the environment
Tunnel construction effectively eliminates dust and noise pollution compared to trenching
Tunnelling avoids traffic disruption and inconvenience to the public
Faster Construction
Tunnelling rather than opening trenches on carriageways takes less time enhancing the efficiency of works while minimising disturbances
As the construction of the tunnel is away from public areas the programme is under the engineerrsquos full control shortening the overall construction time
Cross section of 275kV fluid-filled PPLP insulated cable 275千伏充油聚丙烯薄膜夾心牛皮紙絕緣電纜的橫切面
電纜隧道的優點 與傳統掘坑敷設電纜的方式比較電纜隧道有多項優點
減少對環境的滋擾
電纜隧道建於山中無需橫越山上敷設電纜可避免破壞郊野公園的自然環境把對景觀造成的影響減至最低
建造隧道較在路面挖坑更有效地減少塵埃與噪音的污染
興建隧道可避免對路面交通造成滋擾對公眾引起
不便
縮短建造時間
挖掘電纜隧道比在路面進行挖掘更快捷和富彈性既提高建造工程的效率又得以更快完成
由於建造工程遠離民居整項計劃均由工程師全面控制大大縮短整體施工時間
6
Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
P
rint
ed o
n en
viro
nmen
tal p
aper
2
In the past electricity was transmitted over the mountains by 132kV overhead lines With the development of Hong Kong and the rapid increase in electricity demand Lamma Power Station was constructed with the transmission voltage enhanced to 275kV As overhead lines were unsightly and their existence has restricted large corridors of land from future development the government was not in favour of building more overhead lines on Hong Kong Island Underground cables therefore became the only practical choice
Traditionally underground transmission cables are installed under the carriageways In view of the narrow roads on Hong Kong Island and the many existing underground services the traditional method would often cause severe traffic interruption and great inconvenience to the public as well as visual disruption to country parks on Hong Kong Island To overcome these adverse impacts HK Electric began in the 80s to study the feasibility of using cable tunnels in the planning of new transmission system projects
First cable tunnel in Hong Kong ndash Wah Fu-Bowen Cable Tunnel 香港首條電纜隧道 mdash華富至寶雲電纜隧道
地底電纜傳統上均敷設於路面之下但鑑於港島道路狹窄及地底存有多種不同的服務設施該種傳統的敷設電纜方法往往做成嚴重的交通阻塞及為公眾帶來不便此外建造工程更會破壞港島
部份景色怡人的郊野公園環境為避免這些不良影響港燈在八十年代便開始研究在計劃興建新輸電系統時使用電纜隧道的可行性
3
Cable Tunnels of HK Electric
Currently there are six cable tunnels in the Companyrsquos transmission system The first tunnel was completed in 1988 connecting Wah Fu Portal in the south-western area and Bowen Portal in the north-central area of Hong Kong Island Inside this tunnel two circuits of 275kV fluid-filled Kraft paper insulated cable have been installed They are part of the Lamma Power Station to Bowen Substation circuits
The second tunnel was built in 1993 connecting Nam Fung Portal in the central part and Parker Portal in the north-eastern part of Hong Kong Island The tunnel runs 57km long and is one of the longest cable tunnels
in the world Inside this tunnel two circuits of 275kV fluid-filled Polypropylene Laminated Paper (PPLP) insulated cable have been installed They are part of the Nam Fung Road Switching Station to Parker Substation circuits
In both tunnels provisions have been made for additional transmission circuits
The other four cable tunnels are
- Tin Wan-Wah Fu Cable Tunnel
- Cyberport-Wah Fu Cable Tunnel
- Yung Shue Wan Cable Tunnel
- Pak Kok Tsui Cable Tunnel
Cable tunnels of HK Electric港燈電纜隧道位置圖
Wah Fu-Bowen Cable Tunnel (about 31km)
Nam Fung-Parker Cable Tunnel (about 57km)
Tin Wan-Wah Fu Cable Tunnel (about 08km)
Cyberport-Wah Fu Cable Tunnel (about 08km)
Yung Shue Wan Cable Tunnel (about 02km)
Pak Kok Tsui Cable Tunnel (about 01km)
華富至寶雲電纜隧道（長約 31 公里）
南風至柏架電纜隧道（長約 57 公里）
田灣至華富電纜隧道（長約 08 公里）
數碼港至華富電纜隧道（長約 08 公里）
榕樹灣電纜隧道（長約 02 公里）
北角嘴電纜隧道（長約 01 公里）
1
2
3
4
5
6南丫島
Lamma Island
香港島
Hong Kong Island
華富 Wah Fu
寶雲 Bowen
柏架 Parker
南風 Nam Fung
21
3
4
6
5
田灣 Tin Wan
數碼港 Cyberport
北角嘴 Pak Kok Tsui 華富回旋處
Wah Fu Roundabout
雞籠灣水塘道
Kai Lung Wan Reservoir Road
南丫發電廠
Lamma Power Station
南丫風采發電站 Lamma Winds
榕樹灣 Yung Shue Wan
港燈電纜隧道 目前港燈輸電系統共有六條電纜隧道首條電纜隧道於一九八八年落成連接港島西南面的華富入口至中北部的寶雲入口隧道內敷設有兩組由 275
千伏充液牛皮紙絕緣電纜組成的電路為連接南丫發電廠至寶雲電力分站的部分電路
第二條電纜隧道於一九九三年落成連接港島中部的南風入口至東北面的柏架入口隧道全長五點七公里是全世界最長的電纜隧道之一隧道內敷設有兩組由 275千伏充液聚丙烯薄膜夾心牛皮紙絕緣電纜組成的電路為南風道開關站至柏架電力分站的部分電路
兩條電纜隧道均有預留充足設施以應付日後增設輸電電路的需要
其餘四條電纜隧道是
- 田灣至華富電纜隧道
- 數碼港至華富電纜隧道
- 榕樹灣電纜隧道
- 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m米 56m米 mdash 70m米 54m米 mdash 59m米
2002 2005 2005
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Volcanic Rock火成岩
Granite花崗岩
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Blast傳統鑽土及爆石
February 2000(First blast on28 June 2000)
May 2004(First excavation on21 October 2004)
May 2004(First excavation on15 October 2004)
2000年2月(首次爆石於2000年6月28日 )
2004年5月(首次挖掘於2004年10月21日 )
2004年5月(首次挖掘於2004年10月15日 )
July 2001 September 2005 October 20052001年7月 2005年9月 2005年10月
Wah Fu-Bowen Nam Fung-Parker Tin Wan-Wah Fu TECHNICAL DATA Cable Tunnel Cable Tunnel Cable Tunnel技術資料 華富至寶雲電纜隧道 南風至柏架電纜隧道 田灣至華富電纜隧道
Length 3100m米 5700m米 810m米 長度
Elevation 120m米 mdash 128m 米 51m米 mdash 85m 米 211m米 mdash 443m 米 海拔
Longitudinal Profile 縱剖面 05 05 06 06 NW
29
SE
Tunnel route under隧道沿途路線
MtGough Mt Kellett歌賦山 奇力山
Mt Nicholson Jardinersquos Lookout Mt Butler Mt Parker聶歌信山渣甸山 畢拉山 柏架山
Tin Wan Hill Road Mt Kellett Wah Fu Road 田灣山道奇力山華富道
Cross-section 橫切面
48m
285m
44m
265m
40m
30m
Shape形狀
Horse-shoe馬蹄鐵形
Circular 圓形
Horse-shoe馬蹄鐵形
Soil Condition 土壤情況
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Construction Method 建造方法 Drill amp Blast
傳統鑽土及爆石 Tunnel Boring隧道機械鑽挖
Drill amp Blast 傳統鑽土及爆石
Commencement建造開始日期
March 1986 (First blast on 8 July 1986) 1986年3月 (首次爆石於 1986年7月8日 )
April 1990 (Tunnel boring on 26 February 1991) 1990年4月 (隧道鑽挖於 1991年 2月26日開始 )
November 1996 (First blast on 28 May 1997) 1996年11月 (首次爆石於 1997年5月28日 )
Tunnel Breakthrough隧道貫通
Completion落成
July 1987 1987年7月
1988
March 1992 1992年3月
1993 1998
December 1997 1997年12月
4
3100m米 5700m米 810m米
120m米 mdash 128m米 51m米 mdash 85m米 211m米 mdash 443m米
1988 1993 1998
Horse-shoe馬蹄鐵形
Circular圓形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Drill amp Blast傳統鑽土及爆石
Tunnel Boring隧道機械鑽挖
Drill amp Blast傳統鑽土及爆石
March 1986(First blast on8 July 1986)
April 1990(Tunnel boring on26 February 1991)
November 1996(First blast on28 May 1997)
1986年3月(首次爆石於1986年7月8日 )
1990年4月(隧道鑽挖於1991年 2月26日開始 )
1996年11月(首次爆石於1997年5月28日 )
July 1987 March 1992 December 19971987年7月 1992年3月 1997年12月
Cyberport-Wah Fu Yung Shue Wan Pak Kok Tsui Cable Tunnel Cable Tunnel Cable Tunnel數碼港至華富電纜隧道 榕樹灣電纜隧道 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m 米 56m米 mdash 70m 米 54m米 mdash 59m 米
062 7 E
045SE NE
NW SWW
Pokfulam Road Victoria Road薄扶林道 域多利道
North of Lamma Power Station南丫發電廠北面
North Lamma Island near Pak Kok Tsui 南丫島北近北角嘴
215m
25m
215m
25m 385m
253m
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Granite花崗岩
Volcanic Rock 火成岩
Drill amp Blast 傳統鑽土及爆石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
July 2001 2001年7月
September 2005 2005年9月
October 2005 2005年10月
February 2000 (First blast on 28 June 2000) 2000年2月 (首次爆石於 2000年6月28日 )
May 2004 (First excavation on 21 October 2004) 2004年5月 (首次挖掘於 2004年10月21日 )
May 2004 (First excavation on 15 October 2004) 2004年5月 (首次挖掘於 2004年10月15日 )
2002 2005 2005
5
Benefits of Cable Tunnels
Compared to the traditional open trench method for installing transmission cable the cable tunnel method offers many advantages
Environmental Benefits
By going under rather than over the top of mountains cable tunnels avoid damage to country parks and eliminate any visual impact to the environment
Tunnel construction effectively eliminates dust and noise pollution compared to trenching
Tunnelling avoids traffic disruption and inconvenience to the public
Faster Construction
Tunnelling rather than opening trenches on carriageways takes less time enhancing the efficiency of works while minimising disturbances
As the construction of the tunnel is away from public areas the programme is under the engineerrsquos full control shortening the overall construction time
Cross section of 275kV fluid-filled PPLP insulated cable 275千伏充油聚丙烯薄膜夾心牛皮紙絕緣電纜的橫切面
電纜隧道的優點 與傳統掘坑敷設電纜的方式比較電纜隧道有多項優點
減少對環境的滋擾
電纜隧道建於山中無需橫越山上敷設電纜可避免破壞郊野公園的自然環境把對景觀造成的影響減至最低
建造隧道較在路面挖坑更有效地減少塵埃與噪音的污染
興建隧道可避免對路面交通造成滋擾對公眾引起
不便
縮短建造時間
挖掘電纜隧道比在路面進行挖掘更快捷和富彈性既提高建造工程的效率又得以更快完成
由於建造工程遠離民居整項計劃均由工程師全面控制大大縮短整體施工時間
6
Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
P
rint
ed o
n en
viro
nmen
tal p
aper
3
Cable Tunnels of HK Electric
Currently there are six cable tunnels in the Companyrsquos transmission system The first tunnel was completed in 1988 connecting Wah Fu Portal in the south-western area and Bowen Portal in the north-central area of Hong Kong Island Inside this tunnel two circuits of 275kV fluid-filled Kraft paper insulated cable have been installed They are part of the Lamma Power Station to Bowen Substation circuits
The second tunnel was built in 1993 connecting Nam Fung Portal in the central part and Parker Portal in the north-eastern part of Hong Kong Island The tunnel runs 57km long and is one of the longest cable tunnels
in the world Inside this tunnel two circuits of 275kV fluid-filled Polypropylene Laminated Paper (PPLP) insulated cable have been installed They are part of the Nam Fung Road Switching Station to Parker Substation circuits
In both tunnels provisions have been made for additional transmission circuits
The other four cable tunnels are
- Tin Wan-Wah Fu Cable Tunnel
- Cyberport-Wah Fu Cable Tunnel
- Yung Shue Wan Cable Tunnel
- Pak Kok Tsui Cable Tunnel
Cable tunnels of HK Electric港燈電纜隧道位置圖
Wah Fu-Bowen Cable Tunnel (about 31km)
Nam Fung-Parker Cable Tunnel (about 57km)
Tin Wan-Wah Fu Cable Tunnel (about 08km)
Cyberport-Wah Fu Cable Tunnel (about 08km)
Yung Shue Wan Cable Tunnel (about 02km)
Pak Kok Tsui Cable Tunnel (about 01km)
華富至寶雲電纜隧道（長約 31 公里）
南風至柏架電纜隧道（長約 57 公里）
田灣至華富電纜隧道（長約 08 公里）
數碼港至華富電纜隧道（長約 08 公里）
榕樹灣電纜隧道（長約 02 公里）
北角嘴電纜隧道（長約 01 公里）
1
2
3
4
5
6南丫島
Lamma Island
香港島
Hong Kong Island
華富 Wah Fu
寶雲 Bowen
柏架 Parker
南風 Nam Fung
21
3
4
6
5
田灣 Tin Wan
數碼港 Cyberport
北角嘴 Pak Kok Tsui 華富回旋處
Wah Fu Roundabout
雞籠灣水塘道
Kai Lung Wan Reservoir Road
南丫發電廠
Lamma Power Station
南丫風采發電站 Lamma Winds
榕樹灣 Yung Shue Wan
港燈電纜隧道 目前港燈輸電系統共有六條電纜隧道首條電纜隧道於一九八八年落成連接港島西南面的華富入口至中北部的寶雲入口隧道內敷設有兩組由 275
千伏充液牛皮紙絕緣電纜組成的電路為連接南丫發電廠至寶雲電力分站的部分電路
第二條電纜隧道於一九九三年落成連接港島中部的南風入口至東北面的柏架入口隧道全長五點七公里是全世界最長的電纜隧道之一隧道內敷設有兩組由 275千伏充液聚丙烯薄膜夾心牛皮紙絕緣電纜組成的電路為南風道開關站至柏架電力分站的部分電路
兩條電纜隧道均有預留充足設施以應付日後增設輸電電路的需要
其餘四條電纜隧道是
- 田灣至華富電纜隧道
- 數碼港至華富電纜隧道
- 榕樹灣電纜隧道
- 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m米 56m米 mdash 70m米 54m米 mdash 59m米
2002 2005 2005
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Volcanic Rock火成岩
Granite花崗岩
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Blast傳統鑽土及爆石
February 2000(First blast on28 June 2000)
May 2004(First excavation on21 October 2004)
May 2004(First excavation on15 October 2004)
2000年2月(首次爆石於2000年6月28日 )
2004年5月(首次挖掘於2004年10月21日 )
2004年5月(首次挖掘於2004年10月15日 )
July 2001 September 2005 October 20052001年7月 2005年9月 2005年10月
Wah Fu-Bowen Nam Fung-Parker Tin Wan-Wah Fu TECHNICAL DATA Cable Tunnel Cable Tunnel Cable Tunnel技術資料 華富至寶雲電纜隧道 南風至柏架電纜隧道 田灣至華富電纜隧道
Length 3100m米 5700m米 810m米 長度
Elevation 120m米 mdash 128m 米 51m米 mdash 85m 米 211m米 mdash 443m 米 海拔
Longitudinal Profile 縱剖面 05 05 06 06 NW
29
SE
Tunnel route under隧道沿途路線
MtGough Mt Kellett歌賦山 奇力山
Mt Nicholson Jardinersquos Lookout Mt Butler Mt Parker聶歌信山渣甸山 畢拉山 柏架山
Tin Wan Hill Road Mt Kellett Wah Fu Road 田灣山道奇力山華富道
Cross-section 橫切面
48m
285m
44m
265m
40m
30m
Shape形狀
Horse-shoe馬蹄鐵形
Circular 圓形
Horse-shoe馬蹄鐵形
Soil Condition 土壤情況
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Construction Method 建造方法 Drill amp Blast
傳統鑽土及爆石 Tunnel Boring隧道機械鑽挖
Drill amp Blast 傳統鑽土及爆石
Commencement建造開始日期
March 1986 (First blast on 8 July 1986) 1986年3月 (首次爆石於 1986年7月8日 )
April 1990 (Tunnel boring on 26 February 1991) 1990年4月 (隧道鑽挖於 1991年 2月26日開始 )
November 1996 (First blast on 28 May 1997) 1996年11月 (首次爆石於 1997年5月28日 )
Tunnel Breakthrough隧道貫通
Completion落成
July 1987 1987年7月
1988
March 1992 1992年3月
1993 1998
December 1997 1997年12月
4
3100m米 5700m米 810m米
120m米 mdash 128m米 51m米 mdash 85m米 211m米 mdash 443m米
1988 1993 1998
Horse-shoe馬蹄鐵形
Circular圓形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Drill amp Blast傳統鑽土及爆石
Tunnel Boring隧道機械鑽挖
Drill amp Blast傳統鑽土及爆石
March 1986(First blast on8 July 1986)
April 1990(Tunnel boring on26 February 1991)
November 1996(First blast on28 May 1997)
1986年3月(首次爆石於1986年7月8日 )
1990年4月(隧道鑽挖於1991年 2月26日開始 )
1996年11月(首次爆石於1997年5月28日 )
July 1987 March 1992 December 19971987年7月 1992年3月 1997年12月
Cyberport-Wah Fu Yung Shue Wan Pak Kok Tsui Cable Tunnel Cable Tunnel Cable Tunnel數碼港至華富電纜隧道 榕樹灣電纜隧道 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m 米 56m米 mdash 70m 米 54m米 mdash 59m 米
062 7 E
045SE NE
NW SWW
Pokfulam Road Victoria Road薄扶林道 域多利道
North of Lamma Power Station南丫發電廠北面
North Lamma Island near Pak Kok Tsui 南丫島北近北角嘴
215m
25m
215m
25m 385m
253m
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Granite花崗岩
Volcanic Rock 火成岩
Drill amp Blast 傳統鑽土及爆石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
July 2001 2001年7月
September 2005 2005年9月
October 2005 2005年10月
February 2000 (First blast on 28 June 2000) 2000年2月 (首次爆石於 2000年6月28日 )
May 2004 (First excavation on 21 October 2004) 2004年5月 (首次挖掘於 2004年10月21日 )
May 2004 (First excavation on 15 October 2004) 2004年5月 (首次挖掘於 2004年10月15日 )
2002 2005 2005
5
Benefits of Cable Tunnels
Compared to the traditional open trench method for installing transmission cable the cable tunnel method offers many advantages
Environmental Benefits
By going under rather than over the top of mountains cable tunnels avoid damage to country parks and eliminate any visual impact to the environment
Tunnel construction effectively eliminates dust and noise pollution compared to trenching
Tunnelling avoids traffic disruption and inconvenience to the public
Faster Construction
Tunnelling rather than opening trenches on carriageways takes less time enhancing the efficiency of works while minimising disturbances
As the construction of the tunnel is away from public areas the programme is under the engineerrsquos full control shortening the overall construction time
Cross section of 275kV fluid-filled PPLP insulated cable 275千伏充油聚丙烯薄膜夾心牛皮紙絕緣電纜的橫切面
電纜隧道的優點 與傳統掘坑敷設電纜的方式比較電纜隧道有多項優點
減少對環境的滋擾
電纜隧道建於山中無需橫越山上敷設電纜可避免破壞郊野公園的自然環境把對景觀造成的影響減至最低
建造隧道較在路面挖坑更有效地減少塵埃與噪音的污染
興建隧道可避免對路面交通造成滋擾對公眾引起
不便
縮短建造時間
挖掘電纜隧道比在路面進行挖掘更快捷和富彈性既提高建造工程的效率又得以更快完成
由於建造工程遠離民居整項計劃均由工程師全面控制大大縮短整體施工時間
6
Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
P
rint
ed o
n en
viro
nmen
tal p
aper
825m米 218m米 1095m米
68m米 mdash 635m米 56m米 mdash 70m米 54m米 mdash 59m米
2002 2005 2005
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Volcanic Rock火成岩
Granite花崗岩
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Split (Chemical)傳統鑽土及化學品裂石
Drill amp Blast傳統鑽土及爆石
February 2000(First blast on28 June 2000)
May 2004(First excavation on21 October 2004)
May 2004(First excavation on15 October 2004)
2000年2月(首次爆石於2000年6月28日 )
2004年5月(首次挖掘於2004年10月21日 )
2004年5月(首次挖掘於2004年10月15日 )
July 2001 September 2005 October 20052001年7月 2005年9月 2005年10月
Wah Fu-Bowen Nam Fung-Parker Tin Wan-Wah Fu TECHNICAL DATA Cable Tunnel Cable Tunnel Cable Tunnel技術資料 華富至寶雲電纜隧道 南風至柏架電纜隧道 田灣至華富電纜隧道
Length 3100m米 5700m米 810m米 長度
Elevation 120m米 mdash 128m 米 51m米 mdash 85m 米 211m米 mdash 443m 米 海拔
Longitudinal Profile 縱剖面 05 05 06 06 NW
29
SE
Tunnel route under隧道沿途路線
MtGough Mt Kellett歌賦山 奇力山
Mt Nicholson Jardinersquos Lookout Mt Butler Mt Parker聶歌信山渣甸山 畢拉山 柏架山
Tin Wan Hill Road Mt Kellett Wah Fu Road 田灣山道奇力山華富道
Cross-section 橫切面
48m
285m
44m
265m
40m
30m
Shape形狀
Horse-shoe馬蹄鐵形
Circular 圓形
Horse-shoe馬蹄鐵形
Soil Condition 土壤情況
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Construction Method 建造方法 Drill amp Blast
傳統鑽土及爆石 Tunnel Boring隧道機械鑽挖
Drill amp Blast 傳統鑽土及爆石
Commencement建造開始日期
March 1986 (First blast on 8 July 1986) 1986年3月 (首次爆石於 1986年7月8日 )
April 1990 (Tunnel boring on 26 February 1991) 1990年4月 (隧道鑽挖於 1991年 2月26日開始 )
November 1996 (First blast on 28 May 1997) 1996年11月 (首次爆石於 1997年5月28日 )
Tunnel Breakthrough隧道貫通
Completion落成
July 1987 1987年7月
1988
March 1992 1992年3月
1993 1998
December 1997 1997年12月
4
3100m米 5700m米 810m米
120m米 mdash 128m米 51m米 mdash 85m米 211m米 mdash 443m米
1988 1993 1998
Horse-shoe馬蹄鐵形
Circular圓形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Drill amp Blast傳統鑽土及爆石
Tunnel Boring隧道機械鑽挖
Drill amp Blast傳統鑽土及爆石
March 1986(First blast on8 July 1986)
April 1990(Tunnel boring on26 February 1991)
November 1996(First blast on28 May 1997)
1986年3月(首次爆石於1986年7月8日 )
1990年4月(隧道鑽挖於1991年 2月26日開始 )
1996年11月(首次爆石於1997年5月28日 )
July 1987 March 1992 December 19971987年7月 1992年3月 1997年12月
Cyberport-Wah Fu Yung Shue Wan Pak Kok Tsui Cable Tunnel Cable Tunnel Cable Tunnel數碼港至華富電纜隧道 榕樹灣電纜隧道 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m 米 56m米 mdash 70m 米 54m米 mdash 59m 米
062 7 E
045SE NE
NW SWW
Pokfulam Road Victoria Road薄扶林道 域多利道
North of Lamma Power Station南丫發電廠北面
North Lamma Island near Pak Kok Tsui 南丫島北近北角嘴
215m
25m
215m
25m 385m
253m
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Granite花崗岩
Volcanic Rock 火成岩
Drill amp Blast 傳統鑽土及爆石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
July 2001 2001年7月
September 2005 2005年9月
October 2005 2005年10月
February 2000 (First blast on 28 June 2000) 2000年2月 (首次爆石於 2000年6月28日 )
May 2004 (First excavation on 21 October 2004) 2004年5月 (首次挖掘於 2004年10月21日 )
May 2004 (First excavation on 15 October 2004) 2004年5月 (首次挖掘於 2004年10月15日 )
2002 2005 2005
5
Benefits of Cable Tunnels
Compared to the traditional open trench method for installing transmission cable the cable tunnel method offers many advantages
Environmental Benefits
By going under rather than over the top of mountains cable tunnels avoid damage to country parks and eliminate any visual impact to the environment
Tunnel construction effectively eliminates dust and noise pollution compared to trenching
Tunnelling avoids traffic disruption and inconvenience to the public
Faster Construction
Tunnelling rather than opening trenches on carriageways takes less time enhancing the efficiency of works while minimising disturbances
As the construction of the tunnel is away from public areas the programme is under the engineerrsquos full control shortening the overall construction time
Cross section of 275kV fluid-filled PPLP insulated cable 275千伏充油聚丙烯薄膜夾心牛皮紙絕緣電纜的橫切面
電纜隧道的優點 與傳統掘坑敷設電纜的方式比較電纜隧道有多項優點
減少對環境的滋擾
電纜隧道建於山中無需橫越山上敷設電纜可避免破壞郊野公園的自然環境把對景觀造成的影響減至最低
建造隧道較在路面挖坑更有效地減少塵埃與噪音的污染
興建隧道可避免對路面交通造成滋擾對公眾引起
不便
縮短建造時間
挖掘電纜隧道比在路面進行挖掘更快捷和富彈性既提高建造工程的效率又得以更快完成
由於建造工程遠離民居整項計劃均由工程師全面控制大大縮短整體施工時間
6
Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
P
rint
ed o
n en
viro
nmen
tal p
aper
3100m米 5700m米 810m米
120m米 mdash 128m米 51m米 mdash 85m米 211m米 mdash 443m米
1988 1993 1998
Horse-shoe馬蹄鐵形
Circular圓形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Hard Granite硬花崗岩
Granite花崗岩
Drill amp Blast傳統鑽土及爆石
Tunnel Boring隧道機械鑽挖
Drill amp Blast傳統鑽土及爆石
March 1986(First blast on8 July 1986)
April 1990(Tunnel boring on26 February 1991)
November 1996(First blast on28 May 1997)
1986年3月(首次爆石於1986年7月8日 )
1990年4月(隧道鑽挖於1991年 2月26日開始 )
1996年11月(首次爆石於1997年5月28日 )
July 1987 March 1992 December 19971987年7月 1992年3月 1997年12月
Cyberport-Wah Fu Yung Shue Wan Pak Kok Tsui Cable Tunnel Cable Tunnel Cable Tunnel數碼港至華富電纜隧道 榕樹灣電纜隧道 北角嘴電纜隧道
825m米 218m米 1095m米
68m米 mdash 635m 米 56m米 mdash 70m 米 54m米 mdash 59m 米
062 7 E
045SE NE
NW SWW
Pokfulam Road Victoria Road薄扶林道 域多利道
North of Lamma Power Station南丫發電廠北面
North Lamma Island near Pak Kok Tsui 南丫島北近北角嘴
215m
25m
215m
25m 385m
253m
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Horse-shoe馬蹄鐵形
Volcanic Rock火成岩
Granite花崗岩
Volcanic Rock 火成岩
Drill amp Blast 傳統鑽土及爆石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
Drill amp Split (Chemical) 傳統鑽土及化學品裂石
July 2001 2001年7月
September 2005 2005年9月
October 2005 2005年10月
February 2000 (First blast on 28 June 2000) 2000年2月 (首次爆石於 2000年6月28日 )
May 2004 (First excavation on 21 October 2004) 2004年5月 (首次挖掘於 2004年10月21日 )
May 2004 (First excavation on 15 October 2004) 2004年5月 (首次挖掘於 2004年10月15日 )
2002 2005 2005
5
Benefits of Cable Tunnels
Compared to the traditional open trench method for installing transmission cable the cable tunnel method offers many advantages
Environmental Benefits
By going under rather than over the top of mountains cable tunnels avoid damage to country parks and eliminate any visual impact to the environment
Tunnel construction effectively eliminates dust and noise pollution compared to trenching
Tunnelling avoids traffic disruption and inconvenience to the public
Faster Construction
Tunnelling rather than opening trenches on carriageways takes less time enhancing the efficiency of works while minimising disturbances
As the construction of the tunnel is away from public areas the programme is under the engineerrsquos full control shortening the overall construction time
Cross section of 275kV fluid-filled PPLP insulated cable 275千伏充油聚丙烯薄膜夾心牛皮紙絕緣電纜的橫切面
電纜隧道的優點 與傳統掘坑敷設電纜的方式比較電纜隧道有多項優點
減少對環境的滋擾
電纜隧道建於山中無需橫越山上敷設電纜可避免破壞郊野公園的自然環境把對景觀造成的影響減至最低
建造隧道較在路面挖坑更有效地減少塵埃與噪音的污染
興建隧道可避免對路面交通造成滋擾對公眾引起
不便
縮短建造時間
挖掘電纜隧道比在路面進行挖掘更快捷和富彈性既提高建造工程的效率又得以更快完成
由於建造工程遠離民居整項計劃均由工程師全面控制大大縮短整體施工時間
6
Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
P
rint
ed o
n en
viro
nmen
tal p
aper
Benefits of Cable Tunnels
Compared to the traditional open trench method for installing transmission cable the cable tunnel method offers many advantages
Environmental Benefits
By going under rather than over the top of mountains cable tunnels avoid damage to country parks and eliminate any visual impact to the environment
Tunnel construction effectively eliminates dust and noise pollution compared to trenching
Tunnelling avoids traffic disruption and inconvenience to the public
Faster Construction
Tunnelling rather than opening trenches on carriageways takes less time enhancing the efficiency of works while minimising disturbances
As the construction of the tunnel is away from public areas the programme is under the engineerrsquos full control shortening the overall construction time
Cross section of 275kV fluid-filled PPLP insulated cable 275千伏充油聚丙烯薄膜夾心牛皮紙絕緣電纜的橫切面
電纜隧道的優點 與傳統掘坑敷設電纜的方式比較電纜隧道有多項優點
減少對環境的滋擾
電纜隧道建於山中無需橫越山上敷設電纜可避免破壞郊野公園的自然環境把對景觀造成的影響減至最低
建造隧道較在路面挖坑更有效地減少塵埃與噪音的污染
興建隧道可避免對路面交通造成滋擾對公眾引起
不便
縮短建造時間
挖掘電纜隧道比在路面進行挖掘更快捷和富彈性既提高建造工程的效率又得以更快完成
由於建造工程遠離民居整項計劃均由工程師全面控制大大縮短整體施工時間
6
Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
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Engineers at work in the cable tunnel工程人員在電纜隧道內進行檢查
Greater Cost-Effectiveness
The cable route is more direct resulting in shorter cable length and greater cost-effectiveness
Despite the relatively higher initial construction costs cable tunnels have provisions for future circuits Since the civil cost for additional circuits will be minimal cost benefits can be enormous
Enhanced Supply Reliability
Cables installed inside tunnels are well protected They will not be disturbed by third party trenching or construction Security and reliability of the transmission system are greatly enhanced
Without being constrained by geographical conditions cable sections inside a tunnel can be longer resulting in a reduced number of cable sections and joints improving cable reliability and at the same time lowering cost
The route profile is relatively flat resulting in a simpler hydraulic system for fluid-filled cables
成本效益較大
電纜路線較直接電纜長度亦因而較短有助降低電纜成本
儘管初次的興建成本較高電纜隧道均有為日後增設電路作出準備令將來加設電路的土木工程開支減低大大提高成本效益
加強供電可靠程度
隧道內的電纜不會輕易受第三者掘路或建築工程影響輸電系統的安全及可靠程度大大提高
由於不受地理環境所限隧道內可容納較長的電纜分段因而減少電纜分段及接駁箱的數目加強電纜的可靠程度及降低成本
隧道路線的整體外形較平坦可容許充液式電纜使用較簡單的供油系統
7
Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
P
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Experience Gained from Cable Tunnel Construction
興建電纜隧道 所吸取的經驗
Through the construction of the six cable tunnels valuable experience has been gained
Cable tunnel has proved itself cost-effective environmentally-friendly least disruptive and is a safe and reliable method for transmission cable installation Apart from the benefits gained for the initial circuits the tunnels will remain valuable assets to the Company for future expansion of the transmission system
The use of Tunnel Boring Machine has shortened the overall construction time while fully eliminating noise and vibration problems caused by blasting method
港燈在興建六條電纜隧道期間取得的寶貴經驗包括
利用電纜隧道作為輸電電纜裝置確實為一種具成本效益環保滋擾性低安全可靠的方法除首組電路具效益外電纜隧道更為日後公司輸電系統的擴展預留寶貴空間
採用隧道鑽挖機挖掘隧道可縮減工程所需的時間並完全避免因使用爆破方法所引致的噪音及震盪問題
The adoption of Polypropylene Laminated Paper (PPLP) insulation for 275kV cables significantly reduces the size and weight of the cables enabling longer sections of cables to be installed in the tunnel The no-load losses of the PPLP insulated cable are also much smaller than that of Kraft paper insulated cables
The adoption of caterpillar machines and motorised rollers in cable pulling results in safe efficient and smooth operation
The natural ventilation inside the tunnel has been proved adequate for the operation of more than two circuits More circuits can be installed in the tunnel without assisted ventilation
利用聚丙烯薄膜夾心牛皮紙作為 275千伏特電纜之絕緣夾層可大大減少電纜的體積及重量有助於隧道內安裝更長的電纜此外使用聚丙烯薄膜夾心牛皮紙絕緣電纜空載損耗會較牛皮紙絕緣電纜為少
採用履帶式拖拉機及電動滾筒拉動電纜操作過程既安全有效率又暢順
隧道內之天然通風系統足以應付多於兩組電路的操作方便於隧道內裝設更多電路而無需增設輔助通風系統
wwwhehcom 8
Electric car used for regular inspections in the cable tunnel工程人員利用電動車定期為電纜隧道進行檢查
09
20
07
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