| 高产高效工作面顶板走向钻孔瓦斯抽采技术 |
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| 引用本文： | 王海锋,程远平,沈永铜,刘海波.高产高效工作面顶板走向钻孔瓦斯抽采技术[J].采矿与安全工程学报,2008,25(2):168-171. |
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| 作者姓名： | 王海锋 程远平 沈永铜 刘海波 |
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| 作者单位： | 1. 中国矿业大学安全工程学院,江苏,徐州,221116
2. 淮北矿业集团,祁南煤矿,安徽,宿州,234115 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金 |
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| 摘 要： | 以祁南煤矿349工作面为工程背景,结合采场围岩控制理论,分析了高产高效工作面采空区上覆岩层移动及裂隙发育特征;得出工作面推进速度与顶板走向抽采钻孔在垂向上的布置高度成反比关系.349工作面顶板走向钻孔参数优化和抽放效果实践表明,当工作面推进速度为5～6 md时,顶板走向钻孔应布置在冒落带范围的岩层中,即钻孔终孔与煤层顶板垂距为10～15 m,前后钻场钻孔压茬为50 m,可以确保顶板走向钻孔较高的利用率,并得到很好的抽采效果,满足采煤工作面的安全生产要求.
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| 关 键 词： | 高产高效工作面 裂隙发育 顶板走向钻孔 瓦斯抽采 |
| 文章编号： | 1673-3363(2008)02-0168-04 |
| 修稿时间： | 2007年6月11日 |
Gas Drainage Technology of Along-Strike Roof Drills in Working Face with High Production and Efficiency |
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| WANG Hai-feng,CHENG Yuan-ping,SHEN Yong-tong,LIU Hai-bo.Gas Drainage Technology of Along-Strike Roof Drills in Working Face with High Production and Efficiency[J].Journal of Mining and Safety Engineering,2008,25(2):168-171. |
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| Authors: | WANG Hai-feng CHENG Yuan-ping SHEN Yong-tong LIU Hai-bo |
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| Affiliation: | 1.School of Safety Engineering;China University of Mining & Technology;Xuzhou;Jiangsu 221116;China;2.Qinan Mine;Huaibei Coal Co.Ltd.;Suzhou;Anhui 234115;China |
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| Abstract: | Taking 349 working faces in Qinan coal mine as examples,using the theory of strata control around longwall face,we analyse the characteristic of strata movement and failure development above goaf in working face with high production and efficiency.The result shows that the advancing velocity is inversely proportional to the vertical distance,from bottom of coal seam,of the along-strike roof drills.Through parameter optimization of the along-strike roof drills and engineering practice,we can see that the alo... |
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| Keywords: | working face with high production and efficiency failures development roof drills along strike gas drainage |
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