矿井涌水量预测数值模拟研究

Numerical simulation research on prediction of mine inflow

为了准确预测矿井涌水量,保障煤矿安全及保护地下水资源,在概化出大同矿区水文地质概念模型的基础上,建立了大同矿区地下水三维非稳定流数值模型,以塔山井田的回采工作面月回采进度为单位,分别模拟预测了8214工作面和8216工作面地下水位降至5号煤层底板位置的正常涌水量和最大涌水量,其中8214工作面的正常涌水量为1 224 m3/d,最大涌水量为1 272 m3/d,8216工作面的正常涌水量为1 392 m3/d,最大涌水量为1 440 m3/d。。结果表明:该方法将矿井涌水量预测与回采工作面回采进度有机结合起来,计算结果更加符合实际。

In order to predict mine inflow accurately, protect water resources and ensure the ground water safety of well mining, on the basis of generalizing the hydro-geologic structure model of the Datong Mining Area, the three-dimensional numerical simulation model of transient flow had been established.This paper took monthly production schedule of coal mining face in Tashan filed as unit,the normal and the max ground water inflow of No.8214 and No.8216 working face when ground water level in different periods was down to the bottom of coal seam No.5 respectively were stimulated.The No.8214 and No.8216 coal mining face, normal mine inflow of were 1 224 and 1 392 m3/d re- spectively, and the maximum mine inflow were 1 272 and 1 440 m^3/d respectively. The caculation results were more accurate when the method combined with the mine inflow and monthly production schedule of coal mining face was used.