• The measurement method is demonstrated valid in outburst elimination by the examination of remnant gas pressure, pre-drainage rate and the zonal verification during the coal roadway driving.

    残余瓦斯压力检验以及掘进期间区域验证,均证明方法布置的预抽钻孔突效果有效

    youdao

  • The measurement method is demonstrated valid in outburst elimination by the examination of remnant gas pressure, pre-drainage rate and the zonal verification during the coal roadway driving.

    残余瓦斯压力检验以及掘进期间区域验证,均证明方法布置的预抽钻孔突效果有效

    youdao

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