Debris slide documented along the Bameng-Lengri Riang road section, caused due to heavy rainfall leading to reduction of strength on saturation by seepage.
Mohanty, A., and Joshi, K., 2021: Remote sensing based macro scale (1:50,000) landslide susceptibility mapping in toposheets 82D/12, D/15, D/16, 82H/3, H/4, H/6, H/7, H/10, 83A/1, A/5, A/6, A/9, A/10, A/13, A/14 and 83E/1 covering parts of Tawang, West K
Steep / subvertical cuttings along the slopes should be avoided. Alternatively benching can be implemented to reduce the influence of slope failure due to gravity.
Bameng road section slide-1
Bameng-Lengri Riang road
Construction of benched/stepped gabion walls from the down slope along the face of the slide for ready passage of water through the porous wall. In addition, it is recommended to provide lined hillside drainage system along with chute drain on the downsl
Reduction of strength on saturation by seepage from roadside drainage The material below the road is largely loose unconsolidated soil. The rock exposed below the road is weathered and friable in nature which is susceptible to saturation and active erosi