【摘要】 为研究煤层开采对其覆岩含水层的影响情况,通过RFPA2D数值模拟软件,分析了神东矿区补连塔煤矿31401综采工作面采动过程中覆岩的运动规律和导水裂隙的发育情况。结果认为补连塔煤矿31401综采工作面开采过程中,其第三含水层与其上下的砂质泥岩和粉砂岩形成了复合隔水关键层,能够有效保护上面的第一、二含水层,防止地下水资源的流失。更多还原

【Abstract】 The movement law of overburden strata and the growth of water flowing fractures in overburden strata during mining advanced process for 31401 fully mechanized working-face of Bulianta coal mine were simulated using rock failure process analysis software(RFPA2D).The result showed that in the advance process of the working-face,the third water stratum together with it’s upside mudstone and bottom sandstone strata,can compose the water resisting compound key stratum,which is capable of preserving the first and second water stratum and preventing the disappearance of groundwater resources.更多还原