May 15

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Geotechnical Aspects of Borders RailwayMine Infill Grouting

May 15

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Geotechnical Aspects of Borders RailwayMine Infill Grouting

May 15

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Geotechnical Aspects of Borders RailwayMine Infill Grouting

May 15

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Geotechnical Aspects of Borders RailwayMine Infill Grouting

May 15

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United Kingdom Coalfields

M74 Glasgow Stirling-Alloa Dolphingstone Borders Railway

May 15

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Borders Railway

May 15

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Borders Railway - Design

− URS design

− 1.75m perimeter hole spacing

− 3.75 or 1.75m infill hole spacing

− Rock Cover to the seams

Depth of treatment uses 10:1 cover ratio principle

Beneath structures 10:1 applies but with min 30m

cover

Angle of draw on the permanent way = 2V:1H

May 15

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Borders Railway Shafts

May 15

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The way we worked…..

•50Nr weeks on-site

• 1125Nr rig shifts (10 Nr rigs)

• 250,000 linear metres drilled

• 5000te of grout injected

• 11Nr mine shafts consolidated

• 2.5km of consolidated railway

Exploring New Horizons

May 15

11

New Plant

• State of the art Bulk Mixing Unit utilised within

Cementation Skanska for the first time. Materials

loaded by a fully automated conveyor belt system

• Remote control drilling rigs championed, which

allowed the Operator to work remotely from the rig

• Infra red camera system trialled with a potential to

replace the safety gate system

Cementation Skanska Rail Capability• Access Planning

• Vegetation Clearance

• Temporary Works

• Drainage

• Earthworks

• Reinforced Soils

• Grundomat Piling

• Ground Anchors

• Grouting

• Soil Nails

• Mini Piling

• Sheet Piling

• Gabion Baskets

• Reinforced Concrete

• Planting

• Fencing & Handrails

• In Ground Instrumentation

• Track Monitoring

May 15

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Relationships that Work

• Over 10 years of working together

• Nearly £10 million worth of work

executed− Dolphingstone, East Coast Main line

− Stirling to Alloa Railway Link

− Borders Railway

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