深部煤矿地下水温对矿井涌水量预计的影响

随着我国煤矿开采深度增加,地温、含水层水温升高,相应地含水层渗透系数增大,渗透系数的变化会对矿井涌水量产生一定影响。矿井勘探时期对该问题重视不够。以赵楼煤矿为例,考虑地下水温对渗透系数影响,采用解析法预计了矿井正常涌水量,预计结果为398.53m3/h,与不考虑地下水温变化情况相比较,增加59.63m3/h,增加幅度为17.60%,表明地下水温是影响深部煤矿矿井涌水量的重要因素。

A Study on Deep Part Coalmine Groundwater Temperature Impact Mine Water Inflow Estimation

Along with the coal mining depth deepening in the country, geotemperature and aquifer water temperature is rising and permeability coefficient increasing correspondingly. The variation of permeability coefficient will have a certain impact on mine water inflow, but had not been paid enough attention on the problem during coalmine exploration. Taking the Zhaolou coahnine as an example, considering groundwater temperature impact on permeability coefficient, using analytic method, estimated normal mine water inflow. Estimated result is 398.53m^3/h, larger than without groundwater temperature considering 59.63 m^3/h; increasing amplitude is 17.60%. Thus indicates the groundwater temperature is an important factor to impact deep part coalmine water inflow.