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首页> 外文会议>The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)论文集 >Application Study on 'Boreholes-Wall' Joint Excavation and Drainage Technology
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Application Study on 'Boreholes-Wall' Joint Excavation and Drainage Technology

机译：“井壁”联合开挖排水技术应用研究

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摘要

When the gas drainage technology of"sector"joint excavation and drainage is applied to extra-thick coal seam it can't reduce the gas from the coal wall effectively, this paper analyzed that default and studied the gas drainage principle of the "boreholes-wall" joint excavation and drainage; after having used the technology of the "boreholes-wall" joint excavation and drainage in the Chen Jiashan Coal Mine's 421 lanway, the effect indicated that the gas drainage rate of it could reach more than 75 per cent which is far more than that of the gas drainage technology of"sector"joint excavation and drainage, so the technology is a very effective gas drainage method to fit the extra-thick coal seam.
机译：将“扇形”联合开挖瓦斯抽放技术应用于特厚煤层时，不能有效地减少煤壁瓦斯的产生，本文分析了默认情况，研究了“钻孔-瓦斯抽采”的瓦斯抽采原理。墙”的开挖和排水;在陈家山煤矿421巷道采用“井壁”联合开挖和抽放技术后，效果表明它的瓦斯抽采率可以达到75％以上，远远超过了瓦斯抽采率。 “界”联合开挖的瓦斯抽放技术，因此该技术是一种适合超厚煤层的非常有效的瓦斯抽放方法。

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