煤矿安全2012，Vol.43Issue(7)：26-29,34,5.
富松散含水层下复合隔水层稳定性分析及渗流规律
The Analysis of Composite Water -resisting Layer Stability and Seepage Rule Under Rich Unconsolidated Aquifer
摘要
Abstract
According to the problem of safety mining at 6415 working face under rich unconsolidated aquifer in Renlou coal mine, the methods of theoretical calculation and numerical simulation were applied to analyze the structure and seepage stability of composite wa- ter - resisting layer, and also the seepage rule of.mining strata based on the material mechanics and mining seepage theory. The results showed that the composite water - resisting layer is broken after the working face advancing 45 m and the instability permeability coeffi- cient of roof is O. 948 which closed to 1, so there is a chance of roof water inrush. The seepage velocity of coal wall in the rear of gob and the front of working face increases sharply. The water flowing fractured is mainly distributed in the tensile fractures of coal bed cen- tral part in the rear of gob and the front of working face and the state of the transfixion crack is changing with the motion of overburden.关键词
松散含水层/复合隔水层/导水裂隙/采动渗流/数值模拟Key words
unconsolidated aquifer/composite water - resisting layer/water flowing fractured/mining seepage/numerical simulation分类
矿业与冶金引用本文复制引用
赵永树,张东升..富松散含水层下复合隔水层稳定性分析及渗流规律[J].煤矿安全,2012,43(7):26-29,34,5.基金项目
煤炭资源与安全开采国家重点实验室自主研究课题资助项目 （）
江苏省“333高层次人才培养工程”资助项目 （）
中国矿业大学中央高校基本科研业务费专项资金资助项目 （）
