非金属矿山开采土壤扰动重构对地下水补给的影响分析

Analysis of the Influence of Soil Disturbance Reconstruction on Groundwater Recharge in Non-metallic Mines

非金属矿山开采区域土壤扰动重构会使水文地质环境发生改变,导致地下水补给分析结果不准。从土层厚度、土壤温度、地表径流量等角度出发,分析土壤扰动重构对地下水补给影响因素,并构建三维地下水流动模式,进而构建土壤扰动重构对地下水补给影响数值模型,得出水位演变公式和入渗系数、含水率与水位的变化关系式。结果表明,研究区域的土壤扰动重构方式对超过100cm土壤含水率具有一定促进作用,并且地下水位总体呈现先上升后下降趋势,为其他矿山开采过程中解决同类问题提供了参考方案。

Soil disturbance and reconstruction in non-metallic mining area will change the hydrogeo⁃logical environment and lead to inaccurate analysis results of groundwater recharge.From the perspectives of soil thickness,soil temperature and surface runoff,the influencing factors of soil disturbance reconstruction on groundwater recharge were analyzed,a three-dimensional groundwater flow model was constructed,and then a numerical model of the influence of soil disturbance reconstruction on groundwater recharge was con⁃structed,and the evolution formula of water level and the relationship between infiltration coefficient,water content and water level were obtained.The results show that the soil disturbance reconstruction method in the study area has a certain promotion effect on the soil moisture content over 100 cm,and the groundwater level generally presents a trend of first rising and then decreasing,which provides a scheme for solving simi⁃lar problems in the mining process of other mines.