湘东北虎形山钨多金属矿断层导水性初探

Preliminary Study on Fault Hydraulic Conductivity of Huxingshan Tungsten Polymetallic Deposit in Northeast Hunan

湘东北虎形山钨多金属矿是一个大型多金属矿床,矿床赋存于寒武系下统牛蹄塘组灰岩地层中,矿区水文地质条件较为复杂。文章在分析矿区水文地质特征的基础上,从断层力学性质及围岩条件等方面对矿区断层的导水性影响因素进行了理论探讨,利用钻孔抽水试验成果资料,重点对矿区F1断层的导水性进行了分析和研究,认为F1断层导水性很弱,属于隔水性质断层,未沟通矿区西面冶湖水体。

Huxingshan tungsten polymetallic deposit in northeastern Hunan is a large polymetallic deposit,which occurs in the limestone stratum of Niutitang Formation of Lower Cambrian System,and its hydrogeological conditions are relatively complex.On the basis of analyzing the hydrogeological characteristics of the mining area,the paper theoretically discusses the influencing factors of the water conductivity of the fault in the mining area from the aspects of the mechanical properties of the fault and the surrounding rock conditions.Using the results of the borehole pumping test,the paper focuses on the analysis and research of the water conductivity of the fault F1 in the mining area.It is believed that the water conductivity of the fault F1 is very weak,belonging to the water resisting fault,and does not con‐nect the water body of Yehu Lake in the west of the mining area.