| 古滑坡前缘坡体稳定性评价 |
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| 引用本文： | 段生杰,朱金荣,刘志文.古滑坡前缘坡体稳定性评价[J].土工基础,2009,23(6):1-4. |
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| 作者姓名： | 段生杰 朱金荣 刘志文 |
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| 作者单位： | 1. 宁夏回族自治区煤田地质局,银川,750002
2. 山东鲁南地质工程勘察院,山东兖州,272100 |
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| 摘 要： | 某古滑坡自身稳定,但前缘存在很多不稳定坡体,设计了自然状态、自然＋地震、饱水状态和饱水＋地震条件等4类计算工况,分别利用有限元强度折减法和极限平衡法,对恢复地形、未开挖公路自然地形和开挖公路自然地形模型进行了计算分析。认为其不满足自然条件、地震作用和饱水条件下的安全系数要求。据此提出了削坡减载和锚定板挡土墙加固处理措施。
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| 关 键 词： | 滑坡 稳定性 安全系数 恢复地形 |
Stability Evaluation of the Front Slope of an Ancient Landslide |
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| Affiliation: | DUAN Sheng jie, ZHU Jin rong , LIU Zhi wen (1. Bureau of Coal Geology of Ningxia Hui Nationality Autonomous Region, Yinchuan 750002; 2. Shandong Lunan Institute of Geological Engineering, Yanzhou Shandong 272100, China) |
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| Abstract: | The stability of ancient landslide is stable under natural condition. But there are many unstable slopes in front of the landslide. Then, four computing schemes under natural condition, natural and seismic condition, saturated condition, saturated and seismic condition are designed. Furthermore, restoration of terrain, natural terrain without road excavation and natural ter- rain with road excavation are respectively calculated and analyzed by finite element strength reduction method and limit equilibrium method. Based on these, the safety factor under natural, earthquake and rainfall condition can not reach the requirement. Therefore, the strength disposing measure of unloading and plate anchor retaining wall is presented according to the analysis. |
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| Keywords: | landslide stability safety factor resuming terrain |
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