三门峡铝土矿地下水疏排数值模拟

根据三门峡段村-雷沟铝土矿区地质构造及水文地质条件,对寒武-奥陶纪灰岩岩溶裂隙含水系统水文地质模型进行概化,建立地下水流数学模型,采用Visual Modflow有限差分方法模拟地下水位和涌水量,结合抽水试验地下水位观测资料对该模型进行校正和参数反演,利用校正后的数学模型和参数,预测井下采矿设计水平地下水疏干的水位和矿区涌水量变化,为铝土矿安全开采及地下水防治提供可靠依据。

Numerical Simulation of Bauxite Groundwater Drainage in Sanmenxia

According to geologic structure and hydrogeologic conditions in Duancun-Leigou bauxite area of Sanmenxia,the hydrogeologic conceptual model of karst-fracture aquifer system of Cambrian-Ordovician period limestone is generalized,and the numerical model of groundwater flow is established using finite difference method of Visual Modflow to simulate groundwater level and discharge,the mathematical model is corrected and parameters are inversed combining with observation value of groundwater level of pumping test,and then use the corrected model and parameters to predict the groundwater level and mine discharge changes at different designed mining level drainage in shaft.It provides available bases for bauxite mining safety and groundwater prevention.