| 三峡库区巴东复杂斜坡系统变形机理数值模拟与稳定性研究 |
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| 引用本文： | 刘艳辉,刘传正,李铁锋,连建发.三峡库区巴东复杂斜坡系统变形机理数值模拟与稳定性研究[J].水文地质工程地质,2007,34(1):47-52. |
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| 作者姓名： | 刘艳辉 刘传正 李铁锋 连建发 |
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| 作者单位： | 中国地质环境监测院,北京,100081 |
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| 基金项目： | 国家三峡库区滑坡塌岸防治专项研究基金 |
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| 摘 要： | 三峡库区巴东斜坡系统复杂,其变形机理与稳定性研究对移民迁建和地质灾害防治具有重要意义。本文采用FLAC3D数值计算方法,对巴东复杂斜坡系统变形机理进行研究,为“重力成因论”提供了支持和佐证。从整个斜坡系统的角度,联合使用数值计算方法(FLAC3D)和极限平衡法(Sarma法),系统研究了巴东复杂斜坡系统在不同蓄水状态下不同层次的稳定性问题,结果表明斜坡系统不存在整体深层滑动的可能性;斜坡系统沿岩层界面或软弱层发生失稳的可能性较小,但赵树岭滑体和黄土坡滑体在表层滑体发生较大变形或失稳的条件下,可能导致滑坡整体复活;在水库调蓄过程中,部分滑坡表层堆积体产生变形破坏的可能性较大。另外,斜坡的表层改造可能会引起斜坡中层稳定性的恶化。
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| 关 键 词： | 巴东斜坡系统 重力成因 数值模拟 库水位变化 稳定性 |
| 文章编号： | 1000-3665（2007）01-0047-06 |
| 收稿时间： | 2006-04-11 |
| 修稿时间： | 2006-05-29 |
Numerical simulation for deformation mechanism and stability study of Badong large slope system in the Three Gorges Reservoir |
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| LIU Yan-hui,LIU Chuan-zheng,Li Tie-feng,LIAN Jian-fa.Numerical simulation for deformation mechanism and stability study of Badong large slope system in the Three Gorges Reservoir[J].Hydrogeology and Engineering Geology,2007,34(1):47-52. |
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| Authors: | LIU Yan-hui LIU Chuan-zheng Li Tie-feng LIAN Jian-fa |
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| Institution: | China Institute of Geological Environment Monitoring, Beijing 100081, China |
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| Abstract: | With its complexity,the deformation mechanism and stability study of Badong large slope system is very important to emigration project and geologic hazard control.FLAC~(3D) numerical simulation is used to research deformation mechanism of Badong large slope system,which provides support to the review of gravity genesis.In the research of slope system stability in different water table conditions,numerical simulation technique and limit equilibrium method are used from the whole slope system.The results show:(1) the whole deep slide of slope system is impossible;(2) the probability of slope system failure along rock interface or weak layer is little,but Zhaoshuling and Huangtupo landslide maybe relive in the condition of large deformation or failure of surface landslide;(3) under the influence of reservoir water level changing,it is very possible of some surface landslide failure.Furthermore,the slope surface rebuilds maybe lead to worsen of slope system middle level stability. |
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| Keywords: | Badong slope system gravity genesis deformation mechanism numerical simulation reservoir water level changing stability |
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