Soil Nailing

Stabilisation of collapsing hillside

Location:  Crawshawbooth, Lancs

Client: Calder Construction

Designer: Groundsolve


Stabilisation of collapsing hillside

Project Overview

An isolated row of terrace houses were threatened by the severe deterioration of the hillside at the rear of the properties. A slip plane had occurred in what was possibly an old Victorian quarry that had been filled at some unknown time.

Pennine Geotechnical appointed Groundsolve to develop a solution. This involved the removal of thousands of tonnes of soil/fill and the subsequent installation of over 80 soil nails at depths of up to 15m. Installation was by a combination of tracked lightweight feedbeams and vertical access techniques.

Subsequent to the nail installation, erosmat matting and galvanised meshing was installed to encourage revegetation of the slope. 




Drilling of 80number soil nails at up to 15m depths

Installation of  erosmat matting 

Installation of galvanised meshng


Technical Information

Track mounted feedbeam

Vertical access installation

Self contained grout mixer and agitation units