United States
United States

Cwmavon Landslide

B4286 Cwmavon Road, SA12 9DJ, Cwmavon, Neath Port talbot, United Kingdom
2018
Customer
Neath Port Talbot county borough council
Engineering
Remedy Geotechnics
Contractor
Quantum Geotechnical
Other participating companies
iBEX technical access
Protected object
Road, Residential area, Infrastructure
Corrosion protection
GEOBRUGG SUPERCOATING
Stabilized area
1800 m²
Maximum slope height
45 m
Slope inclination
60 ° - 70 °
Greening
Yes
Erosion control mat
Yes
Exposition
South-East
Initial situation

After prolonged periods of heavy rain and strong winds a large quantity of material was mobilised from the slope down onto the B4286. The road was closed for safety concerns whilst any remaining material was removed by hand. Traffic management was then installed and the road was re-opened as a single lane under traffic management.

Working closely with the local borough council, Geotechnical contractor Quantum Geotechnical and specialist rope access teams at iBEX a provisional stabilisation solution was put forward. This stabilisation utilised the excellent properties of TECCO® GREEN for both strength and greening capabilities. Quantum Geotechnical employed Remedy Geotechnics to ensure the provisional design was suitable, and all was agreed.

Geology

Brithdir Member - Sandstone. Sedimentary Bedrock formed approximately 308 to 310 million years ago in the Carboniferous Period.

These sedimentary rocks are fluvial in origin. They are detrital, ranging from course- to fine-grained and form beds and lenses of deposits reflecting the channels, Floodplains, and levees of a river.

Description

After harvesting of all trees on the full slope and specialist removal of tree stumps and roots on the slip plane, drilling works started from top down. In total 19 rolls of TECCO® GREEN, were installed with 150 soil nails.

Your local contact

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards, Coastal Erosion Protection
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / United States
Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards, Coastal Erosion Protection
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / United States
John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards, Coastal Erosion Protection
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / United States
Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards, Coastal Erosion Protection
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / United States
Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
Salem OR 97302 / United States