| 基于运动学分析的高切坡稳定性评价 |
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| 引用本文： | 梁烨,王亮清,唐辉明.基于运动学分析的高切坡稳定性评价[J].安全与环境工程,2010,17(6). |
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| 作者姓名： | 梁烨 王亮清 唐辉明 |
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| 作者单位： | 中国地质大学工程学院,武汉,430074 |
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| 基金项目： | 国家自然科学青年基金项目(40702050); 中央高校基本科研业务费专项资金资助项目(CUG090104) |
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| 摘 要： | 本文以三峡库区秭归县桐树湾高切坡为例,根据高切坡的岩性及其倾向将高切坡分为三段,对高切坡区的结构面进行统计分析,采用赤平投影法确定了优势结构面及结构面交线的产状,同时采用运动学分析方法在仅考虑重力作用下,对三段高切坡分别进行了平面破坏、楔形破坏与倾倒破坏3种破坏模式的最大安全开挖切坡角的确定,并与实际开挖切坡角进行对比分析,评价高切坡的稳定性,结果表明:三段高切坡发生3种基本破坏的最大安全开挖切坡角大于高切坡目前的切坡角,可见在仅考虑重力作用下,三段高切坡发生3种破坏的可能性较小,处于稳定状态。该研究可为高切坡治理设计提供依据。
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| 关 键 词： | 高切坡 优势结构面 破坏模式 最大安全开挖切坡角 运动学分析 稳定性评价 |
Stability Evaluation of Cut Slope Based on Kinematic Analysis |
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| LIANG Ye,WANG Liang-qing,TANG Hui-ming.Stability Evaluation of Cut Slope Based on Kinematic Analysis[J].Safety and Environmental Engineering,2010,17(6). |
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| Authors: | LIANG Ye WANG Liang-qing TANG Hui-ming |
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| Institution: | LIANG Ye,WANG Liang-qing,TANG Hui-ming(Faculty of Engineering,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | Tongshuwan Cut Slope,which is located in Zigui County,Hubei Province,is taken as an example in this paper.According to the rock type properties and cut slope dip direction,the cut slope is divided into three segments.In these three segments,predominant discontinuities attitude and intersection line attitude,composed of two sets of joints with different directions,are obtained by using the stereographic projection method based on discontinuities field survey.The calculations of the maximum cut slope angles w... |
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| Keywords: | cut slope predominant discontinuity failure mode maximum safe cut slope angle kinematic analysis stability evaluation |
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