瓦斯突出过程中煤体渗透性作用机理研究

Study on the mechanism of penetrability in coal and gas outburst process

摘要: 本文考虑了煤岩体物理力学性质的非均匀性和非连续性的特点,应用岩石破裂过程分析系统(RFPA^2D-GasFlow),对不同渗透性煤体在开采过程瓦斯压力的分布特征、瓦斯突出特征进行了数值试验研究,分析了渗透性对瓦斯赋存及瓦斯突出的影响。研究结果表明,不同渗透性条件下,瓦斯的分布特征、煤体的破裂形式是不同的,瓦斯和地应力在突出中所起的作用也是不同的。

Abstract: Considered the heterogeneity and non-succession of coal, used rock failure process analysis (RFPA^2D-GasFlow) code, for different penetrability of coal researched distribution character of gas pressure and gas outburst in mining process, analysis the influence of penetrability of coal to gas outburst. Results showed: different penetrability of coal made different distribution character of gas pressure and the character of coal failure, gas and stress made different role in gas outburst process.