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

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.