The Characteristics of Discontinuity Planes, Parameters of Slopes and Failure Mechanisms of Rock-Cut Sections: A Stability Analysis
摘要
Slope failures are frequent, widespread geomorphological, and one of the hazardous natural phenomena that threaten human life and property. Every year a number of persons lost their lives due to landslides or slope failures. Therefore, a better and qualitative understanding of landslides is very essential for adopting mitigation strategies for this type of natural hazards. The information on landslides from the different climatic and geological setups is very essential for a better understanding of the influence of weathering, rainfall, or topography. There are varying conditions that lead to their emergence in different regions. The construction and widening of the highways are accelerating landslides due to steepening and removal of toe support of the slope. The factors involved in slope failure are the angle of slope, orientation of discontinuities, lithology of the bedrock, topography, type of vegetation, and also construction process of the road. In this work, a slope stability analysis was carried out nearby Aut, Pangan and Kullu in Himachal Pradesh considering some important parameters to its probable roles of geo-factors that induces slope failure. It has been observed recently in this region that there have been landslides causing more casualties and damages. The jointed rocks, highly weathered rock mass and unconsolidated overburden material of the studied locations were analysed after undertaking both field and laboratory studies. The slope mass rating (SMR) was evaluated at two vulnerable locations. Based on SMR values, remedial measures and further study has been planned.