A debris slide of about 30m length and 35m width took place on 6th August 2019, bvelow the road heading from Nellakottai to Kariyashola, Nilgiri district. The main causative factor for the slide is due to heavy rainfall, there was increase in pore water
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
Devarsholai road debris slide2
Road from Nellakottai to Kariyashola
Removal of loose material and construction of breast wall/ gabion wall in the down slope of road
Due to heavy rainfall, there was increase in pore water pressure and decrease in shear strength of the overburden material. Unplanned cutting and removal of toe support for construction of road lead to failure.