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针对2401轨顺综掘工作面在外切眼交叉口处瓦斯浓度一直较高的问题,通过对该处瓦斯浓度长期观测的数值以及对生产过程中采取的控制瓦斯措施结果的分析,总结出交叉口瓦斯浓度的变化规律,并提出了有效控制交叉口瓦斯浓度超限的具体安全措施,对煤巷掘进过程中后巷瓦斯浓度的控制提供一定的借鉴经验。
Aiming at the problem that the gas concentration is always high at the intersections of 2401 orbiting fully mechanized mining face and the results of long-term observation of gas concentration in this section and the results of gas control measures taken in the production process are analyzed, Gas concentration and the specific safety measures to effectively control the gas concentration at the crossing are provided. The experience of controlling the gas concentration in the back lanes during coal tunneling is provided.