These conclusions aid to measure drainage rate of gas and fixing on maintenance period of coal laneway.
这些结论对于检测煤层瓦斯抽放率以及合理确定煤巷的维护周期具有重要的参考价值。
This paper studies the purpose is to find a kind of efficient lies in the actual production of low permeability of feasible coal permeability gas drainage, thus improving the rate of new methods.
本论文研究的目的就是在于寻找一种高效率的，在实际生产中切实可行的提高低透气性煤层渗透率，从而提高瓦斯抽放率的新方法。
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.
残余瓦斯压力和预抽率的检验以及煤巷掘进期间的区域验证，均证明按该方法布置的预抽钻孔，消突效果有效。
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