Geotechnical Aspects of Borders Railway Mine Infill Grouting 1 May - - PowerPoint PPT Presentation

May 15 1

Geotechnical Aspects of Borders Railway Mine Infill Grouting

May 15 2

Geotechnical Aspects of Borders Railway Mine Infill Grouting

May 15 3

Geotechnical Aspects of Borders Railway Mine Infill Grouting

May 15 4

Geotechnical Aspects of Borders Railway Mine Infill Grouting

May 15 5

United Kingdom Coalfields

M74 Glasgow Stirling-Alloa Dolphingstone Borders Railway

May 15 6

Borders Railway

May 15 7

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 8

Borders Railway Shafts

May 15 9

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 12

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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