gas drainage roadway的意思|示意

The results of experiment testify that the method not only realizes the normal ventilation and gas drainage in drivage roadway but also saves energy.

实验表明，该方法能较好地实现掘进巷道的正常通风和瓦斯排放，并达到节能效果。

On-the-spot investigation was made on the basic parameters of gas drainage in drivage roadway in Huainan Coal Mining Area, and reasonable arrangement range of rib bore-holes an...

现场考察了淮南矿区掘进巷道瓦斯排放的基本参数，确定了巷帮钻孔的有效布置范围和合理抽放时间。

The outburst risk index and gas gush feature are analysed during roadway progress. The result proves that the effectiveness of zonal gas pre-drainage by cross-measure boreholes.

消突效果检验后进行煤巷掘进，掘进期间通过对突出危险性指标和瓦斯涌出参数的分析，验证穿层钻孔区域预抽瓦斯消突技术的有效性；

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。