| 脉冲射流割缝技术在石门揭煤中的应用研究 |
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| 引用本文： | 卢义玉,葛兆龙,李晓红,陈久福,刘勇.脉冲射流割缝技术在石门揭煤中的应用研究[J].中国矿业大学学报,2010,39(1). |
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| 作者姓名： | 卢义玉 葛兆龙 李晓红 陈久福 刘勇 |
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| 作者单位： | 1. 重庆大学,西南资源开发及环境灾害控制工程教育部重点实验室,重庆,400044
2. 重庆松藻煤电公司,瓦斯地质研究院,重庆,401445 |
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| 基金项目： | 国家自然科学基金委专项创新研究群体基金，国家自然科学基金，重庆大学研究生科技创新项目 |
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| 摘 要： | 针对西南地区煤矿石门揭煤周期长,严重制约了煤矿安全生产和采掘工作面接替等问题,提出了利用自激振荡脉冲水射流在煤层中割缝,增加煤层透气性,提高瓦斯解吸率,缩短石门揭煤时间的新思路.研究了高压脉冲水射流自激振荡的形成机理及其特性;通过实验室试验研究供水压力、流量等因素与切槽深度、宽度的关系,优化了自激振荡喷嘴结构及高压脉冲水射流的水力参数.通过在重庆逢春煤矿+523S4机轨巷揭M8煤层应用表明,使用自激振荡脉冲水射流割缝在煤层中的影响范围可达1.5m以上,增大了煤层瓦斯解吸能力,瓦斯释放量提高了4.4倍,钻孔数量减少了60%,缩短工期达70d以上,提高了工效.
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| 关 键 词： | 脉冲水射流 割缝 石门揭煤 |
Investigation of a Self-Excited Pulsed Water Jet for Rock Cross-Cutting to Uncover Coal |
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| LU Yi-yu,GE Zhao-long,LI Xiao-hong,CHEN Jiu-fu,LIU Yong.Investigation of a Self-Excited Pulsed Water Jet for Rock Cross-Cutting to Uncover Coal[J].Journal of China University of Mining & Technology,2010,39(1). |
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| Authors: | LU Yi-yu GE Zhao-long LI Xiao-hong CHEN Jiu-fu LIU Yong |
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| Affiliation: | LU Yi-yu1,GE Zhao-long1,LI Xiao-hong1,CHEN Jiu-fu2,LIU Yong1(1.Key Lab of Ministry of Education for the Exploitation of Southwestern Resources & Environmental Disaster Control Engineering,Chongqing University,Chongqing 400044,China,2.Gas Geology Research Institute,Songzao Coal-Electricity Co.Ltd.Chongqing 401445,China) |
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| Abstract: | Safe production and procedures at the driving face are restricted in mines of southwest China by the long periods required for uncovering coal by rock cross-cuts.A new idea is proposed to solve this problem using self-excited oscillations of pulsed water jets.This is proposed to improve the permeability of the seam and increase the gas desorption rate,which will shorten the cycle of rock cross-cutting and coal uncovering.The properties of a self-excited oscillating pulsed water jet were studied.The hydrauli... |
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| Keywords: | self-excited pulsed water jet slotting rock cross-cut coal uncovering |
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