煤矿井地下水系统与矿井涌水

Coalmine Mine Groundwater System and Mine Water Inrush

遵循空间守恒,采煤空间转化为新增地下含(透)水空间和地面沉降空间。裂隙带、冒落带叠置而成的二元结构体构成矿井地下水含水系统,其中的地下水弹性释放和重力释放是矿井涌水的最初、最直接来源和重要组成。该系统空间为原生地下水系统新的排泄区(汇),并以此为中心形成矿井地下水流动系统。随着工作面关闭,地下水位(压)回升,矿井地下水系统与原生地下水系统不断叠加、耦合,直至矿井关闭,形成新的区域地下水系统。矿井地下水系统作为局部地下水系统,其非均质性及流线折射规律为矿井污染的扩散提供了水动力条件。矿井地下水系统特性,决定了工作面接替方向对矿井涌水量的重要影响。

According to the space conservation principle,the mined-out space can be translated into new added underground water-bearing( permeable) space and surface subsidence space. The binary struct of superimposed fissure zone and caving zone has constituted mine underground water-bearing system; therein groundwater elastic release and gravity release are the mine water inrush initial,direct source and essential component. The space of the system is a new discharge( catchment) area of primary groundwater system,and taking the area as the center formed groundwater flow system. With the working face closing,groundwater level( pressure) is picking up; mine groundwater system and primary groundwater system ceaselessly superimposing and coupling till the mine closed,thus have formed a new regional groundwater system. Mine groundwater system as a local groundwater system,its anisotropy and flow line refraction pattern have provided hydrodynamic conditions for mine water pollution dispersing. The mine groundwater system characteristics have decided the impacts from working face succeeding orientation on mine water inflow.