[最新文献]通过岩石分类系统对边坡稳定性进行比较评估[11/4/2020]

1 论文

Comparative assessment of slope stability along road-cuts through rock slope classification systems in Kullu Himalayas, Himachal Pradesh, India 通过岩石分类系统对边坡稳定性进行比较评估

Abstract: 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. 

摘要: 对山区道路建设形成的人工边坡的稳定性进行评估是非常重要的，但往往是一个被忽视的方面。道路开挖边坡的安全实施取决于对岩体变形和力学属性的工程行为定义的理解程度。理解岩体对岩层开挖的响应，需要对结构要素对其连续特性的影响进行适当的分析，以促进沿路段切坡的安全和经济发展。本文采用结构性和非结构性控制的岩石边坡分类系统，对公路切坡的稳定性进行综合评价。工作的开展涉及收集印度喜马偕尔邦库尔鲁地区沿线路段10个切坡的岩石质量和不连续性特征等各种输入。从现场收集了岩石样品，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，从而确定其破坏机制。针对已知的边坡条件，评估了几种为岩石边坡稳定性评估而开发的岩石质量分类系统。采用边坡质量分类(SMR)、Q-Slope和边坡稳定性分类(SSR)方法对所有已识别的切坡进行稳定性评估比较。对各种安全系数值提出的设计图已被用来评估所研究的切坡的稳定性。最后，对SSR预测的稳定角与Q-Slope方法推荐的稳定角进行了坡度比较。

2 相关文献

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[6] Comparative analysis of several rock slope stability rating system: A case study at Kajang SILK highway

[7] Slope Stability Assessment and Evaluation of Remedial Measures Using Limit Equilibrium and Finite Element Approaches

[8] The assessment of slope stability and rock excavatability in a limestone quarry

[9] Stability Assessment of Slopes Using Different Factoring Strategies

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Note: '相关文献' 是按照Google的排序算法产生出来的.

3 参考文献

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边坡工程岩体分类系统Q-slope

边坡工程导论(C1)---Practical Slope Engineering

工程岩体分类RMS(Rock Mass Strength)

工程岩体分类的简要回顾

岩体强度计算: RMi---Rock Mass index