文档介绍：的变化情况。关键词:煤层开采,地下水,GMS,数值模拟万方数据 NUMERICAL SIMULATIoN STUDY ABOUT MINING INFLUENCE oN GRoUNDⅥiALTER INWEISHAN CoAL MINE ABTRACT In recent years,the coal resources have made tremendous contributions to therapiddevelopment ofChina。 coal resources are rich inShanxi productive forces levelsimprove continuously through the integration in recent years,still,thegreatimpact ofcoalmining on groundwater environment should not be ignored,mainly reflected inthediversion fissure zone caused by thegob areas destroys theimpermeable layer oftheoverlying aquifer,leads tO the leakage of water inthe overlying aquifer,changes the conditions ofrecharge and runoff anddraining oftheoriginalgroundwater flow fieldandforms anew groundwater flow ,Weishan Coal Mine isused asthe main object,numerical simulation isapplied topredict thethe evolutionary trend ofgroundwater flow fieldinthe overlying Permian and Carboniferous aquifer,and controlling measures are proposed to the the prevention ofgroundwater pollution. Weishan Coal Mine issuited in Yuci of Shanxi theprocess of coalmining,to ensure safety inproduction,the aquifer which contains the coal should great water head are formed inthetwo aquifers afterthe drainage of to the existence ofrelativeintact and continuous impermeable aquifer,it does not harm greatly totheoverlying aquifer,but the diversion fissure zone caused by the gob areas may again build hydraulic connection between different thisstudy,based on the existing engineering geological and hydrogeological conditions,a conceptual hydrogeological model isbuiltwith theGMS which iswith thefiniteelement therepeating adjustment ofparameters,a good fitting result is 万方数据 distribution offlow field oftheoverlying aquifer influence ofcoalmining on groundwater intheearlyproduction period(after the exploitation ofmining areaone)and aftertheexploitation ofcoalseam