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| 四川巴中市南龛斜坡变形破坏机制分析与稳定性评价 | |
| 引用本文： | 许向宁,李天斌,熊顺聪.四川巴中市南龛斜坡变形破坏机制分析与稳定性评价[J].地质灾害与环境保护,2002,13(3):27-31. |
| 作者姓名： | 许向宁 李天斌 熊顺聪 |
| 作者单位： | 1. 四川省地勘局成都水文地质工程地质中心,成都,610081;成都理工大学,成都,610059 2. 成都理工大学,成都,610059 3. 四川省地勘局成都水文地质工程地质中心,成都,610081 |
| 摘 要： | 在研究南龛斜坡自然地质环境条件、岩土物理力学参数以及现场勘探测试的基础上，采用地质分析、半定量的弹塑性有限元分析、定量的极限平衡法分析、因素敏感性分析以及可靠性分析等方法，分析了斜坡的成因机制和稳定性，并计算了其破坏概率。作者们认为该斜坡变形破坏的地质力学模式为溜滑－蠕滑－拉裂型；坡面上雨水入渗是斜坡溜、蠕滑、拉裂变形破坏的主导诱发因素。计算结果表明就整体而言，斜坡无论在天然和饱水状态都处于基本稳定状态，宏观上斜坡还不具备大规模滑动的条件；但在饱水状态下，局部地段特别是斜坡前缘坡体将处于不稳定或潜在不稳定状态。 |
| 关 键 词： | 四川 巴中市 斜坡 形成机制 弹塑性有限元分析 极限平衡法 稳定性评价 |
| 文章编号： | 1006-4362(2002)03-0027-05 |
| 修稿时间： | 2001年11月12 |
DEFORMATION MECHANISM AND STABILITY EVALUATION OF NANKAN SLOPE |
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| Xu Xiang ning ,Li Tianbin ,Xiong Shun cong.DEFORMATION MECHANISM AND STABILITY EVALUATION OF NANKAN SLOPE[J].Journal of Geological Hazards and Environment Preservation,2002,13(3):27-31. | |
| Authors: | Xu Xiang ning Li Tianbin Xiong Shun cong |
| Institution: | Xu Xiang ning 1,2,Li Tianbin 2,Xiong Shun cong 1 |
| Abstract: | This paper was based on the study of the natural environment, the physics and mechanics property of rock and soil, the exploration and monitoring data in field of the slope. Methods of geologic analysis, the semi-quantitative elastic-plastic FEM analysis, quantitative limit equilibrium method and factor sensitivity analysis, and reliability analysis of the slope were adapted. Geologic basic features, genetic mechanism, the stability status and failure probability of the slope were demonstrated. The authors suggest that the geo-mechanics model of the deformation and failure of the slope is sliding-peristaltic-cracking and that rainfall and the rain-water penetrating in slope are the main triggered factors leading to sliding, to peristaltic sliding and to cracking. The calculating result of the slope stability and the analyzing result of credibility degree of the slope stability indicate that as the whole the slope is steady under natural condition or saturated condition. But the studies also show that under the saturated condition, the part of the slope will be not steady or potentially steady, especially the forward steep slope. |
| Keywords: | slope formation mechanism elastic plastic FEM analysis limit equilibrium method stability evaluation |
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