纳林河二号煤矿首采区水文地质条件分析及涌水量预测

Hydrology Characteristics Analysis and Water Inflow Prediction of First Mining Area in Nalinhe No.2 Coal Mine

以纳林河二号煤矿首采区3^(-1)煤为研究对象,基于地质与水文地质资料、水化学测试及抽水试验,分析井田水文地质、充水水源及通道特征。构建研究区地下水流三维数值模型,预测地下水水位降深及矿井涌水量的动态变化,结果表明:随着首采区3^(-1)煤采掘空间的不断增大,地下水位降落漏斗面积逐渐扩大,水位降深随之增大,涌水量也呈增大趋势。研究结果可为矿井首采区防治水工作提供科学依据。

Taking 3-1 coal seam of the first mining area in Nalinhe No.2 Coal Mine as the study object,based on the geological and hydrogeological information as well as the water chemical test and the water drainage test,the paper had an analysis on the mine features of hydrogeology,sources and channels of water filling.A 3 D numerical model of the underground water in the study area was established. The dynamic variations of the underground water level dropping and mine water flow were predicted.The results showed that with the mining range in 3-1 coal seam of the first mining area continuously increased,the area of groundwater depression cone would steadily increased.And the water level drawdown increased,the water flow also would be in an increasing tendency.The study results could provide the scientific basis to the underground water prevention and control in the first mining area of the mine.