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The Marmaray Project is the upgrading of approximately 76 km of commuter rail from Halkalı to Gebze.
PURPOSE OF MARMARAY! To connect the railway system Asia and Europe To increase capacity, reliability, accessibility, punctuality and safety To reduce travel time and increase comfort To reduce air pollution and airborne traffic noise To reduce the number of cars in İstanbul
MARMARAY MUSEUM
At the Marmaray dredging study, many archeological find and sunken ships was discovered.
DREDGİNG AND DİSPOSAL
Because of the heavy weight of the Clamshell Dredger , they sink easily. The shell automatically closes when lifted from the seabed. In this way the material is lifted to the surface, the clamshell was unloaded on barges.
The Trailer Suction Hopper Dredger is pick up the soil in water. When the ship is full is goes to the dumping area and off-loads.
This picture shows an example of the intake "suction head" taking the material from the seabed when dredging with a TSHD.
THE IMMERSED TUBE TUNNEL
Total length: 1387m 8 number = 135m 2 number = 110m 1 number = 98,5m Total weight: 12-18 thousand tone Height: 8,75m Width: 15,5m
Barge was moored with rapes. The tubes on barge were immersed on excavation by the help of 4 winches.
BORED AND OTHER TUNNEL
The grey parts was built mainly by tunnel boring machines. The yellow parts was constructed cut and cover technique, New Austrian Tunneling method or other traditional methods.
Because of the tunnels don’t affect each other, between the
tunnels were spaced out. Shot connecting tunnels are provided
at frequent intervals so that escape to the parallel tunnel is
possible in an emergency.
The NATM integrates the principles of the behavior of rock masses under load and monitoring the performance of underground construction during construction.
RAILS
There are ballastless track inside the tunnels and there are
ballasted classic track outside the tunnels.
STATIONS
All existing stations were renewed. The station length was
approximately 225 meters. Three new stations had the main concourse
underground and only entrances visible above ground.
Underground stations was built wide and large to provide comfortable
use.
THE PROBLEMS ENCOUNTERED
Current velocity (11 km /h)
Heavy sheep traffic
Very soft and very hard rocks
Liquefaction in same place
Be close to fault line
Archaeological find
UNKNOWN WORDS
Pillar
İmmersed Tube Tunnel
Bored Tunnel
Renew
Dock
Steel Stick
Steel Shell
Reinforcing Concrete
Rape
Excavation
Current Velocity
Slip
Sütun
Batırma Tüp Tünel
Delme Tünel
Yenilemek
Gemi Havuzu
Çelik Çubuk
Çelik zarf
Nervürlü Beton
Halat
Hafriyat
Akıntı Hızı
Kayma
Disposal
Dredging
Protection Layer
Vibration
Liquefaction
Soil
Joint
Waterproof
Leak
Ventilation
Cementation
Hardened Rail
Atık Giderimi
Su Altı Kazısı
Koruma Tabakası
Titreşim
Sıvılaşma
Zemin
Cıvata
Su İzolasyonu
Sızmak
Havalandırma
Çimentolama
Sertleştirilmiş Ray