| 碎裂岩石路堑边坡稳定性评价与安全防护设计 |
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| 引用本文： | 晏鄂川,戴光忠.,刘昌雄.碎裂岩石路堑边坡稳定性评价与安全防护设计[J].岩土力学,2005,26(Z2):257-260. |
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| 作者姓名： | 晏鄂川 戴光忠. 刘昌雄 |
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| 作者单位： | 1. 中国地质大学（武汉） 工程学院，武汉 430074；2. 湖北省第二地质大队，恩施 445000 |
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| 基金项目： | 湖北省交通厅科技项目“复杂地质条件路堑边坡稳定性研究”资助。 |
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| 摘 要： | 以湖北省209省道宣恩段东门关隧道进口段的典型碎裂结构路堑岩质边坡为例，针对该边坡工程地质、水文地质、岩体结构特征以及前期变形破坏迹象，判断出边坡的变形破坏模式。在此基础上，通过现行规范推荐的不平衡推力法，对边坡的稳定性进行评价，并进行了安全防护设计。在设计过程中，针对常规技术容易出现的冒顶剪出、桩间土挤出和锚索预应力损失衰减等问题，提出避开使用此类技术，而采用削坡、锚杆、格构以及挡墙等措施，试图为解决碎裂结构岩石路堑边坡的分析与防护难题提出一种新的思路。
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| 关 键 词： | 路堑边坡 碎裂结构岩体 稳定性评价 防护设计 |
| 收稿时间： | 2005-03-16 |
Stability analysis and treatment design of a loosen
structure road cutting rock slope |
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| YAN E-chuan,DAI Guang-zhong,LIU Chang-xiong.Stability analysis and treatment design of a loosen
structure road cutting rock slope[J].Rock and Soil Mechanics,2005,26(Z2):257-260. |
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| Authors: | YAN E-chuan DAI Guang-zhong LIU Chang-xiong |
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| Institution: | 1.Faculty of Engineering, China University of Geosciences, Wuhan, 430074, China;
2.The Second Geology Team in Hubei Province, Enshi 445000, China |
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| Abstract: | The road cutting rock slope above the Dongmenguan tunnel in Xuanen sector of Hubei Provincial 209 highway, is a typical loosen structure one. According to characteristics of engineering geological, hydrogeological, structure of rock mass and prior symptom of deformation and failure of the slope, potential types of slope failure are identified; and un-equilibrium pushing method commended by present criterion is used to calculate the slope stability and to process treatment design. During remediation for the slopes of loose material, general treatment techniques always bring many problems such as the extrusion of soil above top of pile, the extrusion of soil between piles, and the decay of anchoring forces in cable bolts; so techniques relating to cutting, anchoring, structure beam and retaining wall are proposed to substitute techniques caused problems. A new method about solving the problems of analyzing and remedying loosen structure road cutting rock slope is presented. |
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| Keywords: | road cutting slope loosen structure rockmass stability assessment treatment design |
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