基于解析法的矿山开采涌水量的预测研究

Research on the Prediction of Gush-out Water in Mineral Pit Based on Analytical Method

本文以西南地区某锂矿为例,分析该锂矿的气候地貌、充水来源、309伟晶岩脉群的地质状况及其内部矿体的形态,选择大井法预测该锂矿涌水量。确定含水层渗透系数K,潜水含水层厚度H和单井影响半径R的取值范围,并与涌水量建立多元线性回归方程,用以预测矿区涌水量。结果表明:对矿井涌水量Q的影响从大到小依次为含水层渗透系数K、潜水含水层厚度H、单井的影响半径R。因此,应提高含水层平均渗透系数K的准确性,以确保涌水量预测值的精确度。

This paper analyzes the climatic geomorphology,water source of a lithium mine in the southwest and the geological condition of 309 metamorphic rocks and its internal ore body morphology.Combined with the large-well method,this paper identifies the ranges of the permeability coefficient of aquifer,the thickness of phreatic aquifer,and the influenced radius of a single well.By establishing a multiple linear regression equation,the magnitudes of the influencing factors of mine inflow are determined.In order of most influencing,it goes:the permeability coefficient of aquifer,the thickness of phreatic aquifer,and the influenced radius of a single well.Therefore,the accuracy of the average permeability coefficient K of the aquifer should be increased to ensure the accuracyof thepredictedvalue of the gushingwater.