It is a shallow translational debris slide of retrogressive nature. Combination of several factors like toe cutting of slope for road construction, weak overburden material with regolith thickness of about 25 m and heavy rainfall resulted in slope failur
Lemdur, K. and Kikon, A. (2018); MacroScale (1:50,000) Landslide Susceptibility Mapping in Toposheet nos. 83G/6 and 83G/7 in Karbi Anglong and Dima Hasao districts in Asam, Kohima District of NGaland and West MNipur distrcit of MNipur. GSI report of FS 2
Since the landslide is small in dimension and caused minor road block, adopting the recommended remedial measure would help in addressing the problem.
Nchen–Ngaulong slide No.1
Nchen–Ngaulong road section
Construction of hill side lined draiNGe and retaining wall may be considered.
The slope forming material at the affected site is composed of highly fragmented sandstone intercalated with shale, siltstone and mudstone. Oversaturation of these weak overburden materials during rainfall resulted in development of local pore water pres