铜川矿区采动滑坡的发生机理  

Occurrence mechanism of mining-induced landslides in Tongchuan mining areas

作　　者：孙学阳[1] 杨梅忠[1] 肖良[1] 张峰[2] 

机构地区：[1]西安科技大学地质与环境学院,西安710054 [2]铜川国土资源局印台分局,陕西铜川727000

出　　处：《黑龙江科技学院学报》2009年第5期387-390,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：国家自然科学基金资助项目(40472104);西安科技大学培育基金资助项目

摘　　要：针对铜川矿区采动滑坡地质灾害频发的情况,结合该矿区地形地貌特征,分析采煤沉陷特征及形成原因,总结开采沉陷诱发山体滑坡的机理。研究表明:该矿区支离破碎、沟壑纵横的特殊地貌,抗压强度较低的岩土体以及改变了覆岩和地表斜坡原始应力平衡状态的地下开采,构成了山体失稳的地形、物质和动力条件。三者相互叠加、相互影响、协同作用,促使山体滑坡频发。该研究为铜川矿区有效预防滑坡地质灾害提供了依据。Aimed at addressing the frequent occurrence of mining-induced landslide, a geological disaster in Tongchuan mining area, this paper presents an analysis of the reason and character of coal mining subsidence and a summary of the cause and mechanism of mining subsidence-induced landslides, depending on topography and geomorphology of the mining area. The research results demontrate that Tongchuan mining area suffers from the fragmented landform and many gullies, rock and soil mass with lower compressive strength, and underground mining operation leading to change in original stress equilibrium in the overlying rocks and topographical slope, all of which contribute respectively to topographic, material and dynamic conditions, resulting in destabilization of landslides. The three conditions are superimposed and interreact synergistically, with the result that there frequently occur landslides. The present study provides technical support for more effective prevention and reduction of geological disasters.

关 键 词：开采沉陷 滑坡 机理 铜川矿区 

分 类 号：P694[天文地球—地质学]