可压密煤层瓦斯运移方程与数值模拟研究

Study on Equation and Numerical Simulation of Gas Migration in Compressible Coalseam with Dual-Pore

建立了非均质可压密煤层瓦斯运移方程和数值模拟方程，通过计算机数值模拟解，并运用相似理论，得到了煤层瓦斯压力分布曲线和煤（孔）壁瓦斯涌出衰减曲线方程。采掘面围岩中的集中应力峰值点存在高瓦斯压力和压力梯度。

Theory and numerical simulation equation of gas migration in compressible coalseam with dual-pore have been established.Distribution curves of gas pressure in coalseam and attenuation curves of gas emission out of coal wall or hole have been obtained by computer numerical simulation and similarity theory. There are high gas pressure and pressure gradient in abutment zone of coalseam neighboring workings. Klinkburg effects and stress liberation by coalseam discharging gas make gas flow increase obviously in hole.