The debris slide occurred due to slope failure. Increase pore water pressure in slope forming material during rainy season along natural nala, which reduced the shear strength of SFM in the extensive slope cut
Ramesh Guguloth, Neethu Alpho Joseph, 2022, Remote Sensing based Macro-scale (1:50,000) landslide susceptibility mapping in Toposheets 83M/4, 8,12,15,16; 83N/01, 2, 5, 6, 9,13; 92A/03, 4, 6, 7, 11,14,15,16; 92E/02, 3 & 4 covering  parts of Tirap, Changan
NIL
1.5 km N of Longkey
Changlang-Khimioyng road
1. Removal of slided debris material. 2. Construction of gabion walls and hill side road drainage along the affected road stretch
1. Weak slope forming material predominantly composed of weathered shale –sandstone interaction with soil.2. Pore water pressure developed in the slope forming material due to oversaturation during heavy rainfall resulted to slope failure