The landside occurred due to the combined affect of vertical slope cut, loose of toe support due to erosion and weight of the overburden material.
Tep, Y. and Baitha, A., 2020. Macro-scale (1:50,000) landslide susceptibility mapping in parts of Toposheets nos. 78N/8, 78O/1 and 78O/5, Kamrup and Goalpara districts of Assam, West Khasi Hills, Ri-Bhoi and East Garo Hills districts of MGhalaya. Unpubli
There is passage of large volume of surface runoff along the hill side drain leading to graudual erosion of the toe of the vertical slope cut leading to ultimate failure triggered by heavy rainfall
Nongporuo-NamASoi slide-1
Nongporuo-NamASoi road
Toe support for the affected slope through construction of strong RCC retaining wall with sufficient weep holes, Construction of road side drain.
Loosening of toe support due to erosion by road side nala. Vertical slope cut could not maintain its stability under heavy rainfall due to oversaturation of the slope forming materal and loose of cohesion.