基于能量理论,分析了瓦斯突出瞬间能量的变化,构建了包括煤岩弹性能、瓦斯膨胀能在内的煤与瓦斯突出的正效应数理模型及煤岩抵抗瓦斯突出能量的负效应模型。根据煤岩应力-应变试验,拟合得出了煤岩不同变形阶段力与变形量之间的关系,结合正、负效应耦合模型,计算出了寺河矿不同煤体结构组合下煤与瓦斯突出发生的临界瓦斯压力值。结果表明:在其他条件相似的情况下,随着软煤比例的增加,临界瓦斯压力值呈指数减小,煤与瓦斯突出的可能性大幅增加。利用该方法可以对煤与瓦斯突出临界值进行快速判断,从而采取有效措施。

Based on the energy theory, the transient energy variation of the gas outburst was analyzed, a positive effect mathematical physics model of the coal an d gas outburst including the coal and rock elastic energy and gas expansion energy and a negative effect model of coal and rock resisted gas outburst energy was esta blished.According to the coal and rock stress-strain test, the relationship between the force and deformation value of the coal and rock at different deformation stages W as obtained.With the positive effect and negative effect coupling models, the critical gas pressure value to cause the coal and gas outburst under different coal structure combined conditions in Sihe Mine was calculated.The results showed that under the other similar conditions, when the percentage of the soft coal increased, the critical gas pressure value would be reduced with exponential form and the possibility of the coal and gas outburst occurred would be increased.The application of the method could rapidly judge the critical value of the coal and gas outburst occurred and thus the effective measures could be conducted.

河南省重点攻关资助项目(112102310362)；河南省安全生产发展计划资助项目(H12-092)；