摘要
庐枞火山岩盆地某矿床水文地质条件复杂,主要含水层富水性中等—极强。矿区发育多条构造破碎带,构造、裂隙发育,为地下水活动提供了良好的通道,给地下水循环交替带来了有利条件,对矿床充水影响较大。以该矿床为例,通过水文地质和地球物理勘探,采用解析法和数值法对矿坑涌水量进行预测,为后期矿山开采工程提供防治水依据。运用解析法(包括水平坑道法、大井法)和数值法对-140、-240、-340 m 3个开采水平的平水期和丰水期涌水量进行预测,结果接近,但矿区含水系统含水介质特征及边界条件不完全符合解析法的假定条件,而数值模拟的结果更符合实际。
A certain mineral deposit in the Lujiang-Congyang volcanic basin is of complex hydro-geological conditions,in which water yield level of the main aquifer is medium and extremely strong.In the meantime,the development of multiple structural fracture zones,structures and fissures provides decent channels for groundwater movement and circulation,which has a great impact on the filling of this mineral deposit.The article uses analytical methods and numerical methods to predict the pit water inflow through hydro-geological exploration and geophysical exploration,and provides methods and theories for water control of later stage.The horizontal-tunnel method and large well method were used separately to predict the water inflow of-140 m,-240 m,-340 m mining levels in normal and high-level water period.Their predicted results were close.However,considering that the aquifer system,the characteristics of the aquifer medium and the boundary condition do not fully meet the assumption of the analytical method,the results of numerical simulation are more practical.
作者
秦贞娜
张骁
许强平
付光明
周乾
Qin Zhenna;Zhang Xiao;Xu Qiangping;Fu Guangming;Zhou Qian(No.327 Geological Team,Bureau of Geology and Mineral Exploration of Anhui Province,Hefei 230011,Anhui,China;Anhui Exploration Technology Institute,Hefei 230031,Anhui,China;School of Geophysics and Measurement-Control Technology,East China University of Technology,Nanchang 330013,Jiangxi,China;Anhui Nuclear Exploration Technology Central Institute,Wuhu 241000,Anhui,China)
出处
《地质学刊》
CAS
2021年第1期83-89,共7页
Journal of Geology
基金
中国地质调查局项目“安徽黄屯地区深部矿产调查与找矿预测”(0747-1861SITCN150/10)。
关键词
水文地质
富水性
数值模拟
预测
矿坑涌水量
庐枞火山岩盆地
安徽
hydro-geology
water yield property
numerical simulation
prediction
pit water inflow
Lujiang-Congyang volcanic basin
Anhui Province
