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

Geotechnical Aspects of Borders Railway Mine Infill Grouting 1 May 15

Geotechnical Aspects of Borders Railway Mine Infill Grouting 2 May 15

Geotechnical Aspects of Borders Railway Mine Infill Grouting 3 May 15

Geotechnical Aspects of Borders Railway Mine Infill Grouting 4 May 15

United Kingdom Coalfields 5 May 15

M74 Glasgow Stirling-Alloa Dolphingstone Borders Railway 6 May 15

Borders Railway 7 May 15

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 8 May 15

Borders Railway Shafts 9 May 15

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 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 11 May 15

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 12 May 15

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 13