The debris slide occurred due to weathered slope forming material and the exposed rock beds dip and slope towards valley side. The weathered rock material is unstable along 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
300 N of Changlang
NH-215, Changlang-Margherita raod
1. Extension of an existing gabion wall on both sides along the affected road section for at least 4m each. 2. Plantation of fast-growing deep-rooted grass / shrubs on the affected slope for protection of slope erosion.
1.Extensive toe cutting of slope during road construction 2. Increase of pore water pressure in the thick (5m) overburden soil reduced the shear strength of the slope forming material and leading to slope failure.