Darwen Bank Stabilisation

The erosion reached within 1 metre of the pipeline.Rock Rolls are installed to create a toe revetment and also to act as a coffer dam to prevent sediment release from the bank worksRiver Darwen reinforced soil slopeVmax C350 Over Reinforced Soil BankOne Year Later. Note the Reed Canary Grass (Phalaris arundinacea) establishment in the Coir Rolls. This is a key stabilising grass in many gravel bed river catchments
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One Year Later. Note the Reed Canary Grass (Phalaris arundinacea) establishment in the Coir Rolls. This is a key stabilising grass in many gravel bed river catchments

A 120 metre reach of river had been subject to ongoing bank instability issues.

A gas pipeline set in the bank was dangerously close to being exposed and bank revetment options were considered.

Consulting Group, WSP Environmental, brought in Salix to provide outline and then detailed design options utilising bioengineering techniques.

Details

Name: River Darwen Riverbank Stabilisation
Client: National Grid
Location:
Category: High Energy Rivers, Rivers & Water Courses

Case Study