【摘要】 随着霍尔辛赫煤矿采掘活动向深部延伸,煤层底板承受的含水层水压增大,威胁煤矿安全生产。通过地质钻探、岩芯精细描述、钻孔抽水试验、水化学分析及水文地球物理测井等工程技术手段,综合分析3~#煤层底板岩溶含水层水文地质特征,并对带压开采条件进行了分析与评价,利用突水系数法对带压区进行了底板突水危险性分区。结果表明:太原组含水层富水性弱,突水系数为0.035～0.043 MPa/m;奥陶系灰岩含水层富水性弱-中等,井田北部富水性强于南部,东部富水性强于西部,突水系数为0.019～0.039 MPa/m。更多还原

【Abstract】 With the deepening of mining activities in Huoerxinhe Coal Mine,the aquifer water pressure on the floor of coal seam increases,which threatens the safety of coal mine production.By means of geological drilling,fine core description,borehole pumping test,hydrochemical analysis and hydrogeophysical logging,the hydrogeological characteristics of karst aquifer under No.3 coal seam floor were comprehensively analyzed,the mining conditions under pressure were evaluated,the zoning of floor water inrush risk was carried out by using the water inrush coefficient method.The results show that the water-rich of aquifer of Taiyuan Formation is weak,its water-inrush coefficient is 0.035～0.043 MPa/m,the water-rich of aquifer of Ordovician limestone is weak to medium,the water-rich in the north of the minefield is stronger than that in the south,the water-rich in the east is stronger than that in the west,and the water-inrush coefficient is 0.019～0.039 MPa/m.更多还原