井工开采影响下的露天矿边坡沉陷规律研究  

Research on the subsidence law of open pit slope on the condition of underground mining

作　　者：王云鹏[1] 张瑞新[1,2] 李二旭[1] 孙骐[1] 李小波[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]国家安全生产监督管理总局通信信息中心,北京100013

出　　处：《中国安全生产科学技术》2010年第6期98-102,共5页Journal of Safety Science and Technology

基　　金：国家重点基础研究(973)计划项目(编号:2010CB732002)

摘　　要：许多露天煤矿通过井工开采回收了边坡下的煤炭资源,但也不同程度地加剧了露天矿边坡的失稳和沉陷问题。其引起的岩层移动及地表下沉是一个复杂的物理、力学变化过程,本文以安家岭露天煤矿及其一号井工矿作为研究背景,首先分析了该矿山采空区的塌陷现状、特点、成因机制以及对露天煤矿生产带来的影响;并应用概率积分法与FLAC数值模拟方法对采空区塌陷进行模拟和预测分析,研究了露井共采作用下边坡变形及破坏机理,揭示了井工采动影响下,露天矿台阶式边坡特有的变形形态、应力分布特征、形成机理与采动沉陷规律。本文研究结论对于同类露井共采的矿山有着重要的借鉴意义。Many coal resource have been mined through pit mining in many surface coal mine,however the problem of instability and subsidence of the slope in surface coal mine have been aggravated to a certain extent.It induced strata movement and surface subsidence that is a complex physical and mechanical changing process.Based on Anjialing surface coal mine and the No.1 pit coal mine,firstly,the subsidence situation of the goaf,characteristics,genetic mechanism and the affections to the surface coal mine were analyzed;secondly,the simulation and prediction to the subsidence of the goaf were taken through the Probability Score Method and FLAC3D,and the slope deformation and destruction mechanism were studied on the condition of open-pit combined mining,the theory which contains the peculiar deformation of surface mine slope,stress distribution characteristics,formation mechanism and mining subsidence rules were revealed under the affection of pit mining.The conclusions of this thesis are quite significant towards the same types of open-pit combined mine.

关 键 词：露井共采 沉陷规律 露天矿边坡 预测分析 

分 类 号：X936[环境科学与工程—安全科学]