Evaluation of stability of artificial slopes created due to road construction in the mountainous terrain is very important but often a neglected aspect. The safe execution of road-cut slopes depends upon the level of understanding achieved in defining the engineering behaviour of rock masses with respect to its deformation and mechanical attributes. Understanding the realistic response of the rock mass to excavation of rock strata requires proper analysis related to influence of structural elements on their continuous characterization for facilitating safe and economical development of cut slopes along the road sections. In this paper structurally and non-structurally controlled rock slope classification systems are implemented to undertake comprehensive evaluation of stability of road-cut slopes. The work carried out involves collection of various inputs in form of rock mass and discontinuity characteristics from ten cut slopes along a road section in Kullu area, Himachal Pradesh, India. Rock samples were collected from site and laboratory testing has been undertaken to determine the intact rocks strength. Beside these, the kinematic analysis was performed to illustrate the geometrical relationship between various joint sets and the slope face so as to determine their failure mechanism. Several rock mass classification systems developed for rock slope stability assessment are evaluated for known slope conditions. The stability assessment for all identified cut slopes is compared using slope mass rating (SMR), Q-slope and slope stability rating (SSR) methods. Design charts proposed for various factor of safety values have been utilized to evaluate the stability of studied road-cut slopes. Finally, a slope wise comparison is made between the stable angles predicted by SSR with those recommended by Q-slope method.

评估由于在山区地形中修路而产生的人工斜坡的稳定性非常重要，但常常被忽略。道路坡度的安全实施取决于在定义岩体的变形和力学属性的工程行为时所达到的理解水平。要了解岩体对岩层开挖的现实响应，需要对与结构元素对其连续特征的影响有关的适当分析，以促进沿路段的挖方边坡的安全经济发展。本文采用结构和非结构控制的岩质边坡分类系统，对路slope边坡的稳定性进行综合评价。开展的工作涉及从印度喜马al尔邦库鲁地区沿路段的十个切入斜坡收集各种形式的岩体和不连续性特征的输入。从现场收集了岩石样品，并进行了实验室测试以确定完整的岩石强度。除此之外，还进行了运动学分析，以说明各种节理和坡面之间的几何关系，从而确定它们的破坏机理。针对已知的边坡条件评估了为岩质边坡稳定性评估而开发的几种岩体分类系统。使用边坡质量等级（SMR），Q边坡和边坡稳定性等级（SSR）方法，比较所有已识别的挖方坡度的稳定性评估。为各种安全系数提出的设计图表已用于评估研究的路cut边坡的稳定性。最后，在SSR预测的稳定角与Q斜率方法推荐的稳定角之间进行了斜率比较。