煤与瓦斯突出过程中能量动态平衡

通过建立突出煤层裂隙角联通道，分析了裂隙扩展条件和规律，建立了瓦斯流伯努利能量方程，分析了瓦斯突出过程中的能量消耗规模和类型。研究表明：瓦斯突出主要取决于瓦斯突出动力能量与消耗能量在动态酝酿过程中能否保持平衡。当瓦斯突出动力能量量变或者突变到某临界值，其值大于瓦斯流突破裂隙角联通道所需的消耗能量时，瓦斯突出就能瞬时或者延时发生。

Study on the energy dynamic balance in coal and gas outburst

The mechanism of coal and gas outburst and a large number of coal and gas outburst accidents both shows that gas outburst is a dynamic course of accumulation and consumption of energy. The main power energy resulting in the coal and gas outburst is elastic strain energy and gas expansion energy. It mainly consume energy by the forms of the needed energy of gas-flow’s partial resistance, friction drag, tearing and sling coal body in coal seam fracture. Through establishing the fracture diagonal channel of outburst coal seam, it has been analyzed about the condition and rule of the fracture expansion in the paper and energy consumption scale and type in the gas outburst process. The gas-flow Bernoulli energy equation has been established. Researches indicated that the gas outburst mainly depends on the balance of the power energy and consume energy in the course of dynamic change. When the gas outburst power energy had quantity change or catastrophe to a critical value, and this critical value is beyond the needed consume energy while the gas-flow pass through the fracture diagonal channel, the gas outburst can occurrence instantly or later.