The ultralimit law of gas potency is summed up at No. 301 face and other faces in No. 1 Coal Mine. The origination of gas and causes of exceeding limit are analyzed. The harness measures are pointed.
总结了一号煤矿301及其它综采面上隅角瓦斯浓度超限规律,详细分析了瓦斯涌出的来源及超限原因,提出了极富针对性的治理措施。