The subsidence occurred beside the Kallarkutty approach road at 1400hrs on 09.07.2018. The subsidence occurred as a result of the toe erosion by one of the tributaries of Mutira Puzha along with the weight of the retaining wall constructed beneath the ap
Kallarkutty II
Kallarkutty approach road
Remove the collapsed retaining wall and loose overburden material. Construction of concrete reinforced gravity wall with proper drainage conduits. Proper maintenance of road drainage system through construction of impermeable side ditches and culverts.
As there was a column of soil between the road and the newly constructed retaining wall the water perched through the column resulted in soaking of the material mass & caused increase in weight along with the pore water pressure created an additional str