Construction of Gabion Retaining Wall for Shore Protection Works at Nigeria

Nigeria |  Rapid Link Multinational Ltd.

Challenge

Due to wave action during rising of sea level and high rise tides, extensive erosion has been observed along the boundary of the plot near sea face. This was affecting the aesthetics and safety of the visitors around. So, it was necessary to construct a retaining structure that will retain the soil behind it in place and prevent erosion. The height of the protection was 4.0m (above ground level).

Solution

In order to overcome the problem of erosion and retain the sea facing slope, TechFab India has proposed the

construction of Gabion retaining wall, which is one of the quickest and most economical ways to reduce shoreline erosion. Gabion Retaining walls are very much suitable in case of retaining structures for protection, nearby the water body. Gabions can take differential settlement effectively. Gabion retaining walls are highly permeable, flexible and free draining and hence do not develop pore water pressure.

A Gabion wall of 5.0m height including foundation depth is constructed and geotextile is also provided as a filter media behind the retaining wall. For the scour protection, gabion mattress has been recommended.