基于GIS的耦合模型在斜坡稳定分析中的应用  

The Coupling Model Based on GIS in the Slope Stability Analysis of Application

作　　者：何玉琼[1] 徐则民[2] 王志奇 张勇 

机构地区：[1]昆明理工大学交通工程学院,昆明650224 [2]昆明理工大学建筑工程学院,昆明650224 [3]云南省公路科学技术研究所,昆明650051

出　　处：《武汉理工大学学报》2011年第2期100-104,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(40572159;40772189);交通部西部科技项目(200831876723);NSFC-云南联合基金重点项目(U1033601);云南省教育厅基金(09Y0076)

摘　　要：在数字高程模型(DEM)的基础上,耦合无限斜坡稳定模型与稳定状态的水文模型研究浅层滑坡的分布问题。以楚雄双柏某一斜坡作为试验研究工点,研究降雨对滑坡发生、分布的影响机理以及斜坡在不同降雨条件下的变形失稳的定量预测问题,实现GIS支持下对斜坡体的稳定性进行可视化的分析与预测。并将预测结果与实际滑坡体作对比分析,在此基础上推算出该斜坡体及此区域的滑坡降雨阈值,为降雨型滑坡提供一种有效的预测与分析方法。On the basis of digital elevation model（DEM）,this paper is to study the distribution of shallow landslide problem by using a model,which incorporate the infinite slope stability model with the steady-state hydrological model.The author of this paper took a slope at Shuangbai County in Chuxiong as a research work site to do a pilot study,which focuses on how the rainfall influence the occurrence and distribution of landslides and making quantitative forecast of how the slope has deformed under different rainfall conditions.With the help of GIS,then,the aim to make a visual analysis and prediction of the stability of the slope body will be achieved.Through a comparison between the predicted results with the actual landslide body,the landslide rainfall threshold of the slope as well as that of this region will be worked out.Thus an effective way to predict and analyze the rainfall-oriented landslide will be provided.

关 键 词：斜坡稳定 降雨阈值 降雨型滑坡 

分 类 号：P642.22[天文地球—工程地质学]