灵宝罗山金矿区矿床充水水源研究

Study on Water Filling Source of Roshan Gold Mineral Deposit in Lingbao

灵宝罗山金矿区是典型的基岩裂隙水充水矿床,其复杂的构造格局和充水裂隙埋藏条件、水动力性质的不均一性,使得矿区矿床充水来源不明确,给矿山的安全生产了带来了一定的困难。为了弄清矿区矿床充水来源,应用水文地球化学方法,对矿区地下水和地表水水化学特征进行了比较分析,同时分析了其氢氧稳定同位素组成特征。结果表明:矿区地下水与地表水补给来源相同,均源自大气降水;结合区内地质构造特征,认为矿区内大气降水通过大量断层及构造破碎带,经裂隙、孔隙和构造破碎带渗入地下补给地下水,构成矿床充水来源。

Roshan Gold Mine in Lingbao City is a typical fissure water-filled bedrock. Its complex structural framework,inhomogeneous occurrence conditions and hydrodynamic properties of the fissure water make the water filling sources of this mineral deposit not clear,which poses a threat to the safety exploitation of Roshan Gold Mine. In order to figure out the origin of the mine water, by using hydrogeochemical methods, this paper makes a comparative analysis on the chemical characteristics between surface water and ground- water in the mining area,and analyzes the hydrogen and oxygen stable isotopic composition of the surface water and groundwater as well. The results show that the surface water and groundwater in mining area both originate from meteoric water. Considering the regional geological structure features, the paper indi- cates that the meteoric water gathers in a large number of faults and the structural fractured zones and then infiltrates and recharges the groundwater by flowing through the fissure, pore and the structural fractured zones,which constitutes the water filling sources of the deposit.