浅埋厚煤层开采地表变形动态预测与排水设计  

Dynamic prediction of ground deformation and drainage design for shallow thick coal seam mining

作　　者：张顺峰[1] 胡瑞林[1] 武雄[2] 

机构地区：[1]中国科学院地质与地球物理研究所中国科学院工程地质力学重点实验室,北京100029 [2]中国地质大学(北京)水资源与环境工程北京市重点实验室,北京100083

出　　处：《煤炭学报》2012年第A02期301-306,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(41072226)

摘　　要：以山西平朔井东矿浅埋厚煤层4201,4301,4302,4303及4401工作面开采为例,运用FLAC3D数值模拟软件对各工作面依次开采后的地表沉降量、沉陷影响半径及导水断裂带发育高度进行了动态预测,得出各工作面最大沉降量为6.4～10.3 m,沉陷影响半径为80.5～106.6 m,垮落带与导水断裂带最大发育高度为140.5 m。在此基础上,结合矿区地形地貌特征,进行了地表动态填挖与截水排水设计,有效预防了地表径流汇聚于沉陷洼地,再经由断裂带进入矿井造成的矿坑突水灾害,并为后期矿山环境修复治理提供依据。Took the shallow thick coal seam 4201,4301,4302,4303 and 4401 workfaces of Jingdong mine area in Pingshuo for example,predicted the range of ground subsidence,settlement and the height of water flowing fracture zone dynamically after workface mining with the FLAC3D numerical modeling software.The calculation results are that the maximum settlement is 6.4-10.3 m,the average radium of ground subsidence is 80.5-106.6 m and the maximum height of the two zones is 140.5 m.On the basis of the results above and combined with geomorphic characteristics of the mine area,come out the surface dynamical fill-cut and drainage design.It can effectively prevent water bursting disaster caused by the surface runoff which influxes to the subsidence area and then flows to roadway through fractured zone.It also can provide data for ecological environment restoration of the coal mine.

关 键 词：浅埋厚煤层 地表变形 动态预测 排水设计 FLAC3D 导水断裂带 

分 类 号：TD823.25[矿业工程—煤矿开采] TD325.2[矿业工程—矿山开采]