北京西山岩溶塌陷成因机理初步分析  

Reason and mechanics analysis of karst collapse at Beijing western mountain area

作　　者：贾三满 翟淑花[2] 马志飞[2] JIA Sanman;ZHAI Shuhua;MA Zhifei(Beijing institute of Geoexploration Technology,Beijing 100120,China;Beijing Institute of Geology,Beijing 100120,China)

机构地区：[1]北京市地质勘查技术院,北京100120 [2]北京市地质研究所,北京100120

出　　处：《南水北调与水利科技》2018年第S01期30-34,共5页South-to-North Water Transfers and Water Science & Technology

摘　　要：在岩溶较发育,水文地质条件较复杂的北京西山地区,岩溶塌陷的防治是一个亟待解决的重要问题。以北京西山岩溶塌陷为研究对象,在分析岩溶塌陷产生的地质环境条件的基础上,采用三维数值模拟法,揭示了地下空洞作用下岩溶塌陷的成灾机理,结果表明,地下空洞的存在及扩张导致地表发生张拉破坏是地表塌陷坑产生的直接原因,为北京地区岩溶塌陷防治提供了技术支持。How to prevent karst collapse caused by karst is an important problem to be solved in the west mountain area of Beijing where the karst is developed and hydrogeological conditions are complicated.Therefore,taking west mountain karst collapse as research object,firstly,the geological condition about karst collapse are introduced firstly,then,at hree-dimensional model is established to analyze the mechanics of karst collapse,whose results show that the existing and expanding of underground cave is the directive reason for the destroy of ground surface and karst collapse,which offer technical support for the preventing of karst disaster.

关 键 词：岩溶塌陷 成灾机理 数值模拟 FLAC^(3D) 

分 类 号：P642[天文地球—工程地质学]