myGeobrugg
Systems
Year of installation
2025
Initial situation
The slope above the RD904 at Bicqueley was affected by numerous local surface instabilities triggered by intense rainfall episodes that fed water circulations (deep and superficial) in the predominantly clay formations, which are sensitive to water.
The removal of vegetation covering the slope is an aggravating factor.
Description
The upper clay/clay part of the slope and the slopes covered by a thick layer of slope colluvium (including at the foot of the slope) were treated with a flexible TECCO® G65/3 high tensile strength mesh combined with P33 spike plate and anchored by nails drilled in a staggered pattern.
Short-term fine-grained erosion was addressed by installing an erosion control mat between the soil and the TECCO® mesh, followed by hydromulching in specific areas to promote slope revegetation.
The limestone fronts and steep slopes, covered by a thin layer of colluvium (less than 1 meter thick), were treated with double-twist wire mesh (visible in the general photos).
The erosion control mat was interposed between the land and the TECCO®; subsequently, some areas were hydromulched to encourage revegetation.
Country/Region
France
Engineering
Contractor
Protected object
Road
Corrosion protection
GEOBRUGG SUPERCOATING
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