东庞矿沿空掘进均压通风防治瓦斯的应用研究

Study on the application of pressure equalization ventilation in preventing and controlling gas in Dongpan Mine

为了解决东庞矿深部水平21219轨道巷沿空掘进期间采空区瓦斯涌出制约安全生产的问题。对掘进巷道瓦斯涌出来源及采空区瓦斯分布进行测量、统计,并结合位能分析,分析出采空区瓦斯运移在空间、时间上与巷道掘进过程瓦斯涌出的动态变化关系。通过采取均压通风防治瓦斯涌出,并实施一系列瓦斯综合治理措施,有效降低了该巷道沿空掘进期间瓦斯涌出量,根据实测统计,巷道绝对瓦斯涌出量降低约60%,解决了采空区瓦斯涌出制约安全生产的问题,取得了良好的经济技术效果。

In order to solve the problem of safe mining in the goaf during the excavation of the 21219 track roadway in the deep level of Dongpang Mine. The gas emission source of the roadway and the gas distribution of the goaf were measured and counted, combined with the potential energy analysis, the dynamic relationship between the gas migration in the goaf and the gas emission in the roadway excavation process was analyzed. By adopting pressure equalization ventilation to prevent gas emission, and implementing a series of comprehensive gas control measures, the amount of gas emission during the tunneling along the roadway was effectively reduced. According to the actual statistics, the absolute gas emission of the roadway was reduced by about 60%, which solved the problem that the gas emission from the goaf restricted the safe mining and achieved good economic and technical effects.