基于Visual MODFLOW的石硐沟铅锌银多金属矿地下水数值模拟

摘要

石硐沟铅锌银多金属矿位于甘肃省肃北县,矿区水文地质条件复杂,为探明石硐沟铅锌银多金属矿区的水文地质条件,为深部矿体开采提供科学合理的依据,利用现有的水文地质观测孔,对矿区进行了大型群孔抽水试验,利用Visual MODFLOW软件构建了地下水流数值模拟模型,利用地下水位动态资料对模型进行识别,结合矿山开采方案分别对矿区未来开采水平的矿坑涌水量进行预测,根据数值模拟结果可知,矿山开采至3 000 m高程时,矿床涌水量达36.2万 m3/d,该研究成果可作为矿山深部开采条件下矿坑排水的设计依据.%Shi Dong-gou Pb Zn Ag polymetallic deposit in Gansu province is located in Subei County, hydro geological conditions of the mine complex hydro geological conditions proved Shi Dong-gou Pb Zn Ag polymetallic deposit, for deep mining to provide scientific and reasonable basis, using hydro geological observation holes existing in the mining area, a large scale pumping test to construct the model of groundwater numerical simulation using Visual MODFLOW software, the model is identified using groundwater dynamic data, combined with the mining scheme respectively to forecast the future mining level of water inflow of mine, according to the results of numerical simulation show that the mining to 3000m elevation, the deposit inflow was 362 thousand m3/d, the research results can be used as based on the design of mine drainage under the conditions of deep mining.