鞍山大孤山矿区地下水氢氧同位素特征及水源识别

Hydrogen and Oxygen Isotopic Characteristics of Groundwater and Source Identification in Dagushan Mining Area,Anshan City

准确识别露天开采矿区漏水来源对矿山的安全开采具有重要意义。基于鞍山大孤山矿区地下水和矿区漏水水样的氢氧同位素测试结果,研究了矿区地下水的氢氧同位素特征,分析了矿区不同含水层之间的补给关系和水力联系,最后结合矿区地质条件确定了矿区不同位置漏水成因。结果表明:地下水来源于大气降雨,含水层之间水力联系紧密;巷道入口漏水来自地表池塘水,巷道其余漏水和矿坑西侧边坡漏水来自矿区西侧地下水的侧向补给;矿坑南侧边坡2处漏水相互补给,漏水水源来自于矿坑南侧地下水。研究结果对矿区水害治理提供了指导意义。

Accurate identification of water leakage sources in open-pit mining areas is of great signifi⁃cance to the safe mining of mines.Based on the hydrogen and oxygen isotope test results of groundwater and water leakage samples in Dagushan mining area of Anshan City,the hydrogen and oxygen isotope charac⁃teristics of groundwater in the mining area were studied,and the recharge relationship and hydraulic con⁃nection between different aquifers in the mining area were analyzed.Finally,the causes of water leakage in different locations of the mining area were determined according to the geological conditions of the mining area.The results show that the groundwater in this study originates from atmospheric rainfall,and the hy⁃draulic connection between aquifers is closely.The water leakage at the entrance of the roadway comes from the surface pond water,and the other water leakages at the roadway and the water leakage at the west side of the mine are from the lateral recharge of groundwater at the west side of the mine.The two water leakages on the southern slope of the mine supplement each other,and the water leakage source comes from the groundwater on the southern slope of the mine.The research results provide guidance for water hazard con⁃trol of mining area.