| GIS支持下降雨滑坡的启动机制研究与数字仿真 |
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| 引用本文： | 李先华,林珲,陈晓清,张登荣,朱红旗,李梅,赵军,何易平.GIS支持下降雨滑坡的启动机制研究与数字仿真[J].力学学报,2001,9(2):133-140. |
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| 作者姓名： | 李先华 林珲 陈晓清 张登荣 朱红旗 李梅 赵军 何易平 |
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| 作者单位： | 1. 香港中文大学地球信息科学实验室香港,
2. 华东师范大学地理系河口与海岸研究所,遥感考古联合实验室,上海260032;
3. 中国科学院水利部成都山地灾害与环境研究所,成都610041;
4. 浙江大学地球科学系 |
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| 基金项目： | 中国科学院特别支持领域;山地灾害滑坡泥石流基础研究资助(编号;962206);香港特区政府研究资助局(CVHK4334/98E及CVHK/99H) |
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| 摘 要： | 大气降雨对滑坡体的含水量和容重均有影响, 该影响具有一定的时间进程, 同时滑坡滑带土的含水率对内摩擦角和内聚力均有一定的影响。本文提出了滑坡启动的两种不同机制。通过降水滑体含水率滑体容重、滑带土内摩擦角、内聚力以及它们与滑坡稳定系数的定量关系及其时间效应, 建立起滑坡启动的速度、推力、方向和启动时间的预测、预报模型。
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| 关 键 词： | 滑坡 启动机制 数字仿真 |
| 收稿时间： | 1999-10-27 |
| 修稿时间： | 2000-02-22 |
GIS-AIDED STUDY AND NUMERICAL SIMULATION OF INITIATION MECHANISM OF LANDSLIDE DUE TO PRECIPITATION |
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| LI Xianhua,LIN Hui,CHEN Xiaoqing,ZHANG Dengrong,ZHU Hongqi,LI Mei,ZHAO Jun,HE Yiping.GIS-AIDED STUDY AND NUMERICAL SIMULATION OF INITIATION MECHANISM OF LANDSLIDE DUE TO PRECIPITATION[J].chinese journal of theoretical and applied mechanics,2001,9(2):133-140. |
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| Authors: | LI Xianhua LIN Hui CHEN Xiaoqing ZHANG Dengrong ZHU Hongqi LI Mei ZHAO Jun HE Yiping |
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| Institution: | 1. Chinese University of HONG KONG, HONG KONG;
2. Shanghai East China Normal University, Shanghai 260032;
3. Chengdu Institute of Mountain Harzards and Enuironment,CAS&MWC,Chengdu 610041;
4. Zhejiang University,Hangzhou 313000 |
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| Abstract: | In this paper the influence of atmospheric precipitation on moisture content and volume weight landslide body and hence the influence moisture content in soil on internal friction angle and cohesive force are discussed. Based on these influences, two different initiation mechanisms for landslide are presented. The models for forecasting initial velocity, pushing force, direction, and time of initiation are established based on these relationships involving factors of precipitation moisture content volume weight and internal friction angle cohesive force stability. At the same time, numerical simulation of landslide initiation mechanisms is accomplished by GIS. |
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| Keywords: | Landslide Initiation mechanism Numerical simulation |
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