The thick section of weak slope mass exposed on critically cut slope is composed of highly fractured/ fragmented quartzite and phyllite overlain by thin in-situ soil cover. The presence of drainages on hillslope, wet hydrological condition and seepage of
Kikon, A., and Jamir, I., 2021: Remote sensing based macro-scale (1:50,000) landslide susceptibility mapping in Toposheets 78M/9, M/10, M/11, M/13, M/14, M/15, 83A/2, A/3, A/4, A/7, A/8, A/11, A/12, 83B/1, B/5 & B/9 covering  parts of Tawang, West Kameng
Construction of breast wall along the toe of affected slope was in progress at the time of field investigation. This section of the road is highly susceptible to landslides. Therefore, implementation of adequate mitigative measures is suggested.
Seppa Road Slide 7
Seppa Road Section
Systematic channeling of hillslope drainages for proper disposal of surface water runoff through chute and lined hillside drains.
1. SFM: highly fractured quartzite intercalated with phyllite. 2. Hillslope is highly dissected by drainages. 3. Wet hydrological condition on the affected slope. 4. Seepage of water along weak planes. 5. Ill-modification of slope for road construction.
