| 深孔预裂爆破在正行矿突出煤层掘进中的应用 |
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| 引用本文： | 李庐阳,何启林,黄文尧.深孔预裂爆破在正行矿突出煤层掘进中的应用[J].煤炭技术,2014(9):186-188. |
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| 作者姓名： | 李庐阳 何启林 黄文尧 |
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| 作者单位： | 安徽理工大学能源与安全学院;安徽理工大学化学工程学院 |
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| 摘 要： | <正>行矿15#煤层透气性差,瓦斯压力高。轨道下山II段煤巷施工钻孔过程发生喷孔、夹钻等动力现象,抽采效果不佳。在掘进工作面迎头设置爆破孔,两帮设置抽采孔进行深孔预裂爆破后,煤层透气性系数增加,瓦斯抽采浓度和纯量明显提高,消除了煤层突出危险,实现了煤巷快速安全掘进。
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| 关 键 词： | 突出煤层 低透气性 煤巷掘进 深孔预裂爆破 |
Application of Deep-hole Pre-split Blasting in Drilling Outburst Coal Seam of Zhenghang Mine |
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| LI Lu-yang;HE Qi-lin;HUANG Wen-yao.Application of Deep-hole Pre-split Blasting in Drilling Outburst Coal Seam of Zhenghang Mine[J].Coal Technology,2014(9):186-188. |
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| Authors: | LI Lu-yang;HE Qi-lin;HUANG Wen-yao |
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| Affiliation: | LI Lu-yang;HE Qi-lin;HUANG Wen-yao;School of Energy and Safety,Anhui University of Science and Technology;School of Chemical Engineering,Anhui University of Science and Technology; |
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| Abstract: | With low permeability and pressurized gas,coal seam No.15 in Zhenghang mine cannot achieve desired effects in gas extraction due to the occurrence of dynamic phenomena in track down II,including spray holes and clip drills.However,when blasting holes are directly set on the wall during drilling and deep-hole pre-split blasting is conducted with gas extraction holes placed parallel to the blasting holes,the permeability of coal seams is enhanced and gas is extracted with higher concentration and purity,this eliminates hazards in the seams and ensures safe and fast drilling in the tunnel. |
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| Keywords: | outburst coal seam low permeability tunnel drilling deep-hole pre-split blasting |
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