浅埋煤层开采矿井涌水量计算方法研究

Calculation method for water inflow from exploited mine in shallowly-buried coal seam

矿井涌水量预计主要侧重于计算方法和适用条件方面的研究,很少考虑采掘过程及采后影响效应对矿井涌水量影响,基于浅埋煤层顶板出水机理及矿井涌水特征,将矿井涌水量分为固定和变化水量两部分,并依据各自的特点,提出与之配套的水量计算方法。同时,在分析首采面、次采面等各工作面间涌水相互干扰的情况下,针对不同水力边界条件,对工作面水量计算公式的适用条件进行分析。在实践中,该矿井涌水量计算方法条理清晰、分类明确、实用性强。

At present, prediction of mine inflow mostly focuses on aspects of calculated methods and ap- plied conditions, but rarely considering mine inflow to be effeeted by excavating process and mined domino offect. Withal, the paper bases on water-bursting mechanism of roof and characteristic of mine inflow of exploited mine in shallowly-buffed coal seam, taking mine inflow divide into the diversification water and the immobility water two parts, and according to respective characteristics, putting forward matching calculation methods. Meanwhile, the paper analyzed the condition that inflow of exploited working faces interfere with each other, contraposed different hydraulic boundary conditions, and construed the condition that the calculation formula of working face inflow are applied. In practice, the method has well defined consecution, specific classify, better practicability.