A remediation scheme to stabilise ancient mine workings on a stretch of railway line in Cornwall received a High Commendation at the prestigious ICE South West Region Merit Awards in Bath last week. 

A critical section of the line ran over the old mine workings at Dowgas.  Tony Gee and Partners (TGP) was appointed initially by Network Rail to examine the feasibility and relative risks of various options for stabilising the new double track alignment over the mine.

Following site investigation, the favoured option was to install heavily reinforced concrete slab below the ballast which is capable of supporting the worst credible subsidence condition.

Tony Gee and Partners is proud to be part of the team that received the merit award.

Alfred McAlpine, working under the GWESPA alliance, continued TPG’s appointment for the detailed design.  This included temporary and permanent track alignment to tie into the overall redoubling scheme enabling work to be switched from one track alignment to the other under a tight programme using only short possessions.

Click here for a more information about this project.