Changes

The stabilisation scheme principally involves involved 'soil nailing', a process used successfully elsewhere along the line after the [[2007 Storm Damage|storm damage of 2007]]. Steel rods are driven or bored through the slip into the solid bedrock beneath and secured in place with a concrete grout.<ref>[[Bibliography#Books|Sowden (2012)]] p. 12.</ref> The photograph below shows this work in progress in July 2017. Around 500 of these 'nails' will be were required, as well as significant improvements to drainage in the area.<ref name = SVRLive/> This includes included the installation of a network of “counterfort” drains below the sheet piling. It is fairly certain that there exists a spring in the locality as the ground in some areas of the slip remained boggy for the duration of the repair, even during dry spells. The drainage network will draw off the water in the embankment and discharge in the Severn. This, combined with the other trackside drainage that has been put in, should improve matters greatly.

Remedial works to the track bed itself will involve involved four track panels being lifted over the worst affected part of the slip. Around 800 tonnes of mostly ash will be were removed and replaced with fresh imported stone infill reinforced with plastic “geomesh” grid.

The SVR anticipates completing the repairs were substantially completed by October 2017.<ref name = SVRLive/>Final work such as tamping was completed during the winter 2017-18 break, with the line restored to normal running speed for the 2018 season.