The slope instability issues in Himalayan terrain is drastically increasing due to variety of anthropogenic activity and rapid urbanization. Road and highway networks in mountainous regions are the main source in remote parts of hilly terrain for the transportation as well as all sorts of socio-economic features. The study of slope stability in these hilly regions along the highways and roads are major concern, where slope instability caused transportation problems, death and injury of human, loss of their properties and also environmental degradation. Present article exposed the slope instability analysis for the two typical slopes along National Highway (NH-7), between Devprayag and Mulyagao in Uttarakhand, where the Highway goes up to the holy shrine of Kedarnath and Badrinath. The vulnerable slopes are numerically simulated using limit equilibrium method (LEM) and finite element method (FEM) for dry and saturated condition. The comparative analysis of factor of safety for LEM and FEM results show good correlation, i.e., 1.6–2.4% variance in dry condition and in saturated condition the LEM and FEM results show 11–13% variance. The finite element simulation has also assessed the principal stresses and displacement vector, which gives more understanding to identify and reveal the slope stability issues in analogous morphology. The result shows that both the slopes are in critical condition and prone to failure in rainy season due to exertion of water in intensely fractured rocks.

由于各种人为活动和快速的城市化，喜马拉雅地形的边坡失稳问题急剧增加。山区的公路和高速公路网络是丘陵地带偏远地区交通和各种社会经济特征的主要来源。在公路和公路沿线这些丘陵地区的边坡稳定性研究是主要关注的问题，其中边坡的不稳定性造成了运输问题，人员伤亡，财产损失以及环境退化。本文介绍了在北阿坎德邦的Devprayag和Mulyagao之间的国家公路（NH-7）上两个典型斜坡的斜坡失稳分析，该公路上升到Kedarnath和Badrinath的圣地。使用极限平衡法（LEM）和有限元法（FEM）对干燥和饱和条件下的易损斜坡进行了数值模拟。对LEM和FEM结果的安全系数的比较分析显示出良好的相关性，即在干燥条件下，变异为1.6–2.4％，在饱和条件下，LEM和FEM结果，变异为11–13％。有限元模拟还评估了主应力和位移矢量，这为识别和揭示相似形态中的边坡稳定性问题提供了更多理解。结果表明，这两个斜坡均处于临界状态，由于在强烈裂隙的岩石中积水，在雨季容易发生破坏。对LEM和FEM结果的安全系数的比较分析显示出良好的相关性，即在干燥条件下，变异为1.6–2.4％，在饱和条件下，LEM和FEM结果，变异为11–13％。有限元模拟还评估了主应力和位移矢量，这为识别和揭示相似形态中的边坡稳定性问题提供了更多理解。结果表明，这两个斜坡均处于临界状态，由于在强烈裂隙的岩石中积水，在雨季容易发生破坏。对LEM和FEM结果的安全系数的比较分析显示出良好的相关性，即在干燥条件下，变异为1.6–2.4％，在饱和条件下，LEM和FEM结果，变异为11–13％。有限元模拟还评估了主应力和位移矢量，这为识别和揭示相似形态中的边坡稳定性问题提供了更多理解。结果表明，这两个斜坡均处于临界状态，由于在强烈裂隙的岩石中积水，在雨季容易发生破坏。从而可以更好地识别和揭示类似形态的边坡稳定性问题。结果表明，这两个斜坡均处于临界状态，由于在强烈破裂的岩石中积水，在雨季中容易发生破坏。从而可以更好地识别和揭示类似形态的边坡稳定性问题。结果表明，这两个斜坡均处于临界状态，由于在强烈破裂的岩石中积水，在雨季中容易发生破坏。