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。
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。
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