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 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.
利用瓦斯抽排孔把井下瓦斯预抽后排到地面，是我国目前煤矿预防瓦斯事故和进行综合利用能源的有效方法之一。
It is one of the effective methods for energy and resources comprehensive utilization to have gas drained to the ground by using gas-discharging hole in China.
目前，本煤层瓦斯预抽放措施仍然被认为是预防瓦斯灾害最有效的方法之一。
It is considered that the gas pre-extraction measure in coal bed is one of the most effective methods to prevent the gas disaster.
煤层深孔预裂爆破近年来在瓦斯抽放中运用日益增多，但目前对其爆破理论研究较少。
The technique of deep-hole presplitting blasting in coal bed is widely used for gas predrainage recently; but its blasting theory is not clear up to now.
现场试验表明，这是一种适于井下工作面钻进瓦斯预抽放短钻孔的轻便高效钻机。
The field test indicated that the developed drilling rig is appropriate for underground pre-drainage of coal seams.
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。
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.
其中预抽煤层瓦斯能和其他防突措施配合采用，因此其具有广泛的适用性。
Take the coal seam gas out among them in advance being able to compose in reply measure composition defending against other dashing forward adopt, the person has broad serviceability therefore.
其中预抽煤层瓦斯能和其他防突措施配合采用，因此其具有广泛的适用性。
Take the coal seam gas out among them in advance being able to compose in reply measure composition defending against other dashing forward adopt, the person has broad serviceability therefore.
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