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苏联的《矿内通风学》曾指出:矿井风机一旦停运,在抽出式通风矿井中,不会有大量瓦斯涌出;在压入式通风矿井中,瓦斯便会大量涌出,造成严重事故.特别是平顶山一矿“9.7”事故的出现,使原来一些使用压入式通风的矿井(四矿、一矿)被改为抽出式通风.就七矿而言,是否有必要进行压改抽呢?为此,我们对一、四、七矿进行了调查、分析.试图从瓦斯来源、风量、大气压力变
Soviet Union’s “Mine Ventilation” has pointed out: Once the mine fan shutdown, in the extraction ventilation mine, there will be no large amount of gas emission; in the press-in ventilation mine, gas will be a large number of gush, causing serious accidents In particular, the occurrence of the “9.7” accident in Pingdingshan No. 1 mine changed some of the originally pumped ventilation mines (No. 4 mine and No. 1 mine) into draft ventilation and, in the case of No. 7 Mine, whether it is necessary to carry out pressure modification For this reason, we conducted a survey and analysis of the No.1, No.4 and No.7 mines and tried to change the sources of methane, air volume and atmospheric pressure