| 提高下向钻孔抽采效果的技术研究 |
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| 引用本文： | 靳春震,于小明,冯磊. 提高下向钻孔抽采效果的技术研究[J]. 陕西煤炭, 2012, 31(4): 46-47,42 |
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| 作者姓名： | 靳春震 于小明 冯磊 |
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| 作者单位： | 1. 淮浙煤电公司顾北矿,安徽淮南,232151
2. 安徽理工大学能源与安全学院,安徽淮南,232001 |
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| 摘 要： | 北一（6-2）轨道上山下部车场高抽巷下向钻孔成孔、护孔、排渣及抽采中排水困难导致下向钻孔抽采效果差。通过全程下套管提高成孔率，采用多步段封孔技术提高封孔严密性，在孔内加设高压气管，利用高压气体清除孔内积水及煤岩粉，切实提高了下向钻孔的抽采效果。
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| 关 键 词： | 下向钻孔 成孔 孔内积水 抽采效果 |
Technical research on improving the extraction effect of downward drilling holes |
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| JIN Chun-zhen,YU Xiao-ming,FENG Lei. Technical research on improving the extraction effect of downward drilling holes[J]. , 2012, 31(4): 46-47,42 |
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| Authors: | JIN Chun-zhen YU Xiao-ming FENG Lei |
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| Affiliation: | 1.Gubei Coal Mine,Huaizhe Coal and Electric Company,Huainan 232151,China;2.College of Energy and Safety Engineering,Anhui University of Science & Technology,Huainan 232001,China) |
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| Abstract: | The pore-forming,protection of drillings,slag discharge and drainage difficulties leads to poor extraction effect of downward drilling holes.The paper introduced the technologies that improving the pore-forming rate by the entire casing,improving the sealing tightness by multi-step sealing technology and clearing the water and coal powder from borehole using high pressure air.Practice shows that the technologies can improve the extraction effect of downward drilling holes. |
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| Keywords: | downward drilling holes pore -forming accumulated water in drilling hole extraction effect |
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