CASE STUDY

When a landslip affected a 30m high

slope above the B4286 at Cwmafon,

South Wales, Remedy Geotechnics

worked with contractor Quantum

Geotechnical and Neath Port Talbot

Council to stabilise the slope. The land-

slip had prompted a partial road closure

and Neath Port Talbot Council needed

the road reopened as quickly as

possible. Working with key stakeholders,

in particular the local authority, Remedy

was able to get fast track for ground

investigation and preliminary nail testing.

Detailed design and Category 2 checking

quickly followed.

Paying close attention to keeping costs

down whilst maximising efficiency, a high

strength Geobrugg Tecco G65/3 steel

mesh facing was secured to the

underlying sandstone bedrock with

self-drilling bar product which enabled

the upper nails to be installed using

roped access techniques - the only

practical way the facing mesh could

be secured at height.

On the lower parts of the slope a long

reach excavator attachment was

used.

Following the success of the work,

Remedy was pleased to see the slope

secured and the road fully open.

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A rapid response to a demanding landslip

situation partially blocking a key road.

A translational slope failure had deposited a

significant amount of debris onto the B4286

entering Cwmafon, leading to major traffic

disruption.

Fast track design and securing Technical

Approval for soil nailing/rock bolting to retain a

high strength facing mesh, which secured the

slope against future failure and debris fall.