A rock fall with blok size 10m×15m took place along the Tenkasi to Courtallam road, Tirunelveli district. The main causative factor for the rock fall was due to percolation of rain water along the foliation plane and joints reduced the shear strength of
Ahmed A. and Achrya, S., 2020. Macroscale (1:50,000) Landslide Susceptibility Mapping in parts of Toposheets nos. 58G/4,7,8,9,10,13,14, 58H/1,5 & 58A/02, 06, 08 & 10 parts of Tirunelveli, Theni, Madurai , Virudunagar & Nilgiri Districts of Tamil Nadu
A road is crossing nearby 60-70m from the slide location.
Cortallam road Rock fall
Road from Tenkasi to Courtallam
Removal of loose overhanging boulders, rock bolting and provision of providing rock-fall fences along the vulnerable road section.
Percolation of rain water along the foliation plane and joints reduced the shear strength of rock strata along slope which resulted in rock fall.