深部矿区涌水与山体流场变化的三维模拟分析  

3D modelling of forecast on flowing yield and flow distribution in a mine site

作　　者：夏强[1] 张涵[2] 谢世杰[3] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]西南交通大学地球科学与环境工程学院,成都610031 [3]四川省地质工程勘察院,成都610032

出　　处：《工程勘察》2014年第9期45-50,55,共7页Geotechnical Investigation & Surveying

摘　　要：在分析四川某矿区的延伸接替工程水文地质条件基础上,建立了研究区水文地质概念模型,运用Visual Modflow对地下水流场进行数值模拟。利用校正后的模型,预测不同开采水平下地下水流场的分布及涌水情况、地下水降落漏斗的影响范围,定量比较不同开采深度对地下水水位的影响程度、与地表水体的补、排关系。结果表明,地下水降落漏斗影响面积最大达4.03km2,降雨旱、雨季补给条件对深部巷道涌水量影响较小,水库至开采区方向存在地下水分水岭,对矿区深部开采充水影响不大。本研究为今后该矿区地下水资源的合理开发利用、矿区建设及环境保护等提供了科学依据。A hydrogeological concept model is developed for a mine site to represent the hydrogeological condition in the study area.A groundwater flow simulation is conducted by the Visual Modflow.The distribution of groundwater flow is predicted and the water discharges,the groundwater depression cone and its size in mining area with different depths is estimated,the effect of mining on groundwater levels,the interaction between groundwater and surface water is studied using the calibrated model.The results show that the maximum area of groundwater depression cone is up to 4.03km^2;the flow rate of groundwater discharges in deep tunnel is not sensitive to the rainfall fluctuation;a groundwater watershed existed between reservoir and mine tunnels,which protected the mine tunnels from flooding.The study provided the scientific supports on the management of the groundwater and environmental protection.

关 键 词：数值模拟 Visual MODFLOW 地下水流 铜矿 涌水量 

分 类 号：P641.2[天文地球—地质矿产勘探]