煤与瓦斯突出过程中能量耗散规律的研究

RULES OF ENERGY DISSIPATION IN COAL AND GAS OUTBURST

对煤与瓦斯突出过程中煤体质点内的能量耗散过程用热力学定律进行了分析；论证了由地应力引起的弹性潜能最先消耗在煤体的破碎上，为谋体内瓦斯能的释放创造了条件；在突出过程中起决定作用的是煤体本身释放的初始释放瓦斯膨胀能．通过突出模拟及测定表明，受地应力破坏后的含瓦斯煤体在卸压初始时刻确实有一个释放瓦斯膨胀能的能量峰，并且该能量峰的大小与揭煤时的动力现象显著与否密切相关．

Energy dissipation from coal particles in coal and gas outburst is analyzed by thermodynamics.It is proved that the elastic potential energy induced by ground stress is first of all consumed in coal solid fragmentation,which creates conditions for gas energy release from coal solid.And the expansion energy in the initial period from coal solid plays a decisive part in coal and gas outburst.Simulation test and the test data show that in the initial period of pressure release of gas-bearing coal after the ground pressure becoming imbalanced, there is an energy peak due to gas expansion.The magnitude of energy peak is closely related to the dynamic phenomenon in opening a coal seam.