Low impact eco friendly scour protection solution
CML has over 30 years experience of designing and installing scour protection schemes so we were pleased to win a Network Rail tender to employ this low impact solution to protect railway embankments at 8 locations in the South and West.
The ‘soft option’ for these schemes comprises the use of rock rolls, combined with willow stakes and pre-seeded matting. The rock rolls consist of cobble sized rock fill retained within a high strength polyethylene net, providing a cost effective and flexible solution to scour problems. They accumulate silt due to the small stone size and can be fully vegetated which helps to support native wildlife populations which is not possible with traditional ‘hard’ solutions such as rock armour.
The streams and rivers in this contract cover an area from Oxford to Cornwall, with the majority of the projects based in Devon.
The work involves a more ‘hands on’ approach for the teams since it uses less machinery. The CML team is getting used to life in waders!