辽宁抚顺西露天煤矿涌水研究

STUDY ON THE WATER INRUSH OF WEST OPEN-PIT COAL MINE IN FUSHUN,LIAONING PROVINCE

利用水文地质钻探、同位素技术、水位统测等方法,分析西露天矿涌水来源,评价各来源对西露天矿涌水的补给量,为西露天矿地质灾害评估和矿坑规划利用提供科学依据.结果表明:西露天矿坑是区域地下水汇集区,周边地下水向矿坑内径流.周边地区进入西露天矿的总水量为2477.8×10^(4)m^(3)/a,来源主要为浑河通过北帮第四系含水层的侧向补给和大气降水补给.其中北帮浑河侧向补给的涌水量约1115.7×10^(4)m^(3)/a,约占45.0%,大气降水直接降入矿坑水量约997.8×10^(4)m^(3)/a,约占40.3%.古城子河通过西露天矿西帮侧向补给矿坑的水量约177.9×10^(4)m^(3)/a;地下水通过西露天矿南帮杨柏河、刘山河古河道等地段侧向径流补给的水量约186.4×10^(4)m^(3)/a;东帮在东露天矿影响下接近疏干.

Through the methods of hydrogeological drilling,isotope technology and water level measurement,the paper analyzes the sources of water inrush in the West Open-Pit Coal Mine and evaluates the water recharge from each source,which provides scientific basis for geological hazard assessment and pit planning and utilization of the mine.The results show that the west open-pit is a regional groundwater gathering area,with runoff from the surrounding groundwater.The total amount of water flowing to open-pit from surrounding areas is 2477.8×10^(4)m^(3)/a,mainly from the lateral recharge of Hunhe River through the Quaternary aquifer in the north slope of the open-pit,and atmospheric precipitation recharge,among which the water inflow from Hunhe River is about 1115.7×10^(4)m^(3)/a,accounting for 45.0%,and the water amount of atmospheric precipitation directly falling into the mine is about 997.8×10^(4)m^(3)/a,taking up about 40.3%.The water supply of Guchengzi River through the west slope of the open-pit is about 177.9×10^(4)m^(3)/a,while that of groundwater supplied by lateral runoff from the paleochannels of Yangbai River and Liushan River in the south slope of the open-pit is about 186.4×10^(4)m^(3)/a.The east slope is close to draining under the influence of East Open-Pit Mine.