阿刀亥煤矿掘进巷道煤壁瓦斯涌出规律的研究

Study on methane emission law from the coal wall of driving gateway in Adaohai coal mine

针对阿刀亥煤矿1203炮掘巷道,通过现场实测掘进巷道煤壁瓦斯涌出量,建立了掘进巷道煤壁瓦斯涌出强度随时间的变化规律方程,确定出掘进巷道煤壁瓦斯涌出量与巷道长度、掘进速度及煤壁暴露时间的关系,给出了煤壁瓦斯涌出枯竭极限时间、掘进巷道煤壁最大瓦斯涌出量以及掘进巷道煤壁达到最大瓦斯涌出量时巷道长度的计算方法.该研究结果,对于指导矿井的通风设计和采掘部署,采取有针对性的防治煤巷掘进瓦斯灾害措施,具有重要的理论意义和实用价值.

In view of the 1203 blasting driving gateway of Adaohai coal mine,by means of the field measurement of coal wall methane emission quantity in the driving gateway,the regularity equation of coal wall gas emission intensity changing with the exposed time of coal wall was set up.The relation between the gas emission of coal wall and the gateway length,the speed of driving and the exposed time of coal wall was found.Then the calculation method of the limited time of gas emission running out,the maximum gas emission quantity of coal wall,and the driving gateway length of the coal wall＇s maximum gas emission quantity were provided.The studied result has very important theoritic significance and practical value not only in directing ventilation design and excavation deployment,but also in taking some target-oriented measures for preventing gas disasters.