顺煤层钻孔抽放瓦斯数值模拟与应用

为获取顺煤层钻孔抽放瓦斯的合理参数,依据煤层瓦斯流动理论和质量守恒定律,以顺煤层抽放钻孔周围瓦斯流场为研究对象,建立了钻孔抽放瓦斯流动方程的数学模型.以新庄孜煤矿5213掘进工作面为例,采用MATLAB对钻孔瓦斯流场进行数值模拟,并与矿井的实际抽放情况进行了比较和分析,得出了适合该矿煤层的瓦斯抽放参数.抽放参数可以在淮南矿区相近煤层赋存条件下推广应用,以利于矿区高瓦斯矿井的安全生产.

Numerical simulation and application of boreholes along coal seam for methane drainage

In order to gain ideal parameters of boreholes along coal seam for methane drainage, based on the gas flow theory in coal seam and the law of mass conservation, a mathematical model of the flow equation for draining methane through boreholes was established to study the methane flow field around drainage boreholes along coal seam. No. 5213 working face of Xinzhuangzi Coal Mine was taken as the field for simulating methane flow with MATLAB software. The simulation result was compared with actual drainage effect of the mine. Finally, the methane drainage parameters suitable to coal seam of the mine were obtained through analysis. The parameters can be applied and popularized in Huainan Mining Area with similar conditions of coal seam storage, which is beneficial to safety production for high methane mines.