Slope Stability Assessment – County Durham

Ground and Project Consultants were commissioned to undertake a slope stabilisation scoping report and provide an outline design of remedial measures for a large landslip at a caravan holiday park in the north-east.

The 10m high slope had suffered a major slip following site modifications and a period of extended wet weather.  GPCL were asked to develop an assessment of potential remedial options.  This had significant challenges with the presence of a river at the toe of the slope and designation as both a Special Area of Conservation (SAC) and a Site of Special Scientific Interest (SSSI).

A ground investigation was conducted and it was established that the presence of low strength laminated glacial clays were likely to be the key contributing factor for the failure.

Following a detailed slope stability analysis, it was concluded by GPCL that the most practical and cost-effective solution for the client was re-grading of the slope and the construction of a berm at the toe of the slope.