岩溶区地下开采引起覆岩移动变形规律研究  

Research on Law of Moving and Strain of Over Rock under Karst Regions Underground Mining

作　　者：颜林艳 左宇军[1,2,3,4] 曹洁[1,2,3,4] 曹俊才 

机构地区：[1]贵州大学矿业学院,贵阳550025 [2]贵州大学贵州省非金属矿产资源综合利用重点实验室,贵阳550025 [3]贵州省优势矿产资源高效利用工程实验室,贵阳550025 [4]复杂地质矿山开采安全技术工程中心,贵阳550025

出　　处：《煤炭技术》2016年第4期7-9,共3页Coal Technology

基　　金：贵州省优秀科技教育人才省长资金项目(黔省专合字(2011)36号);国家"十二五"科技支撑项目(2012BAB08B06)

摘　　要：以贵州某煤矿1401工作面4~#煤层为研究对象,在充分考虑岩溶区溶洞、岩层节理存在的基础上,运用RFPA2D-Strata数值软件对开采引起覆岩移动变形过程进行分析。模拟结果显示：开采过程中覆岩发生应力重分布形成应力拱,应力拱和溶洞附近应力集中,覆岩变形、破坏首先发生于节理及溶洞附近,每一层岩层的冒落都会经历变形、离层、断裂和冒落这样一个过程,溶洞的存在改变了覆岩破坏途径。Take Guizhou acoalliery 1401 work surface 4# coal as as research object,taking full account of the existences of karst area caves and rock joints,applied RFPA2D-Strata numerical software to analyze the dynamic development process of movement and deformation of cover rock under mining influence.Simulation results show that the stress arch forming because of cover rock occurring stress redistribution in the process of mining,and the stress concentrated around the arch and caves. The deformation and damage of cover rock occurred in the vicinity of joints and cave at first,every terrane should undergo the process of deformation, separation, fracture and falling the existence of cave changed the destruction way of cover rock.

关 键 词：岩溶区 地下开采 覆岩移动 数值模拟 

分 类 号：TD823[矿业工程—煤矿开采]