Mechanism and restraining technology on spontaneous combustion of coal detonating gas in goaf

作者：Qin Bo Tao^*; Zhang Lei Lin; Wang De Ming; Yao Yuan Ling

来源：Journal of China Coal Society, 2009, 34(12): 1655-1659.

• Air pressures
• Combustion zones
• Concentration ranges
• Explosion hazards
• Firing zone
• Fresh air
• Gas explosion
• Gas explosions
• High quality
• Mixed gas
• Potential explosion
• Risk of explosions

In order to prevent spontaneous combustion of coal detonating gas explosion, studied the explosion concentration range and explosion hazards resulted from mixed gases concluding CH4 and CO produced in fire gas, analyzed the potential explosion area and course of spontaneous combustion of coal detonating gas. The results show that the scope of explosion concentration and the risk of explosion increase in the goaf with spontaneous combustion of coal and high-gas when CH4 gas mixed with a large number of CO. At the same time, fire-heating air pressure produced by spontaneous combustion of coal results in the full mix of CH4, CO and fresh air and the convection exchange of heat between the combustion zone and non-firing zone, occurred the gas explosion accident. Finally, the large flux and high-quality three-phase foam was adopted to prevent spontaneous combustion of coal detonating gas.

• 出版日期2009
• 单位中国矿业大学（北京）