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一、概述在瓦斯灾害严重的矿井中,为了治服瓦斯灾害保证安全生产,在采取各种有效技术措施时(如抽放瓦斯、开采解放层……等),都必须进行煤层瓦斯压力测定。我国许多瓦斯矿井在五十年代中就应用着各种封孔测压
I. Overview In coal mines with serious gas disasters, in order to treat gas disasters and ensure safe production, coal seam gas pressure measurement must be carried out when adopting various effective technical measures (such as gas drainage and exploitation of the liberated layer ...). Many gas mines in China in the fifties on the application of a variety of sealing pressure manometry