甘肃肃北双尖山地区某金矿床水文地质条件研究

The Hydrogeological Conditions of a Gold Deposit in Shuangjianshan Area,Subei,Gansu Province

本文研究结果表明:矿区地下水主要为火山岩裂隙水,分布较广泛,但富水性较差,在断裂破碎带处相对富集,总体上涌水点水量不大,一般20m3/d;矿体位于当地最低侵蚀基准面以下,地形不利于自然排水,矿床主要充水含水层及构造破碎带含水层富水性弱,矿坑涌水量小,总体上水文地质条件简单,利于资源开采;根据水文地质特征,建议深部采用竖井开采较为适宜。

The results of this study show that the groundwater in the mining area is mainly volcanic rock fissure water,which is widely distributed,but its water content is poor.It is relatively enriched in the fracture zone,and the water volume at the upwelling point is not large,generally 20m3/d.The orebody is located below the local minimum erosion base level,and the terrain is not conducive to natural drainage.The main water-filled aquifer and the structural fracture zone aquifer of the ore deposit have weak water content,and the water inflow of the mine pit is small.In general,the hydrogeological conditions are simple,which is conducive to resource exploitation.According to the hydrogeological characteristics,it is suggested that vertical shaft is more suitable for deep mining.