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[1]刘勇,刘建磊,温志辉,等.多级破煤水力冲孔强化松软低透煤层瓦斯抽采技术研究[J].中国安全生产科学技术,2015,11(4):27-32.[doi:10.11731/j.issn.1673-193X.2015.04.004]
　LIU Yong,LIU Jian-lei,WEN Zhi-hui,et al.Study on technology of hydraulic punching by multi-stage coal breaking for enhancing gas drainage in soft coal seams with low permeability[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(4):27-32.[doi:10.11731/j.issn.1673-193X.2015.04.004]
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多级破煤水力冲孔强化松软低透煤层瓦斯抽采技术研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年4期
页码:
27-32
栏目:
学术论著
出版日期:
2015-04-30

文章信息/Info

Title:
Study on technology of hydraulic punching by multi-stage coal breaking for enhancing gas drainage in soft coal seams with low permeability
作者:
刘勇1; 刘建磊1; 温志辉1; 魏建平1; 2
（1. 河南理工大学 河南省瓦斯地质与瓦斯治理重点实验室，河南 焦作 454000； 2. 煤炭安全生产河南省协同创新中心，河南 焦作 454000）
Author(s):
LIU Yong1;  LIU Jian-lei1; WEN Zhi-hui1; WEI Jian-ping1; 2
(1. Henan Key Laboratory for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo Henan 454000, China; 2. The Collaborative Innovation Center of coal safety production of Henan Province, Jiaozuo Henan 454000, China)
关键词:
多级破煤; 水力冲孔; 堵孔; 瓦斯抽采; 松软低透煤层
Keywords:
multi-stage coal breaking;  hydraulic punching;  plugging holes;  gas drainage;  soft coal seams with low permeability
分类号:
X936
DOI:
10.11731/j.issn.1673-193X.2015.04.004
文献标志码:
A
摘要:
在松软低透煤层中应用水力冲孔强化瓦斯抽采时，经常出现堵孔、卡钻等现象。针对这一问题，提出多级破煤水力冲孔技术。在分析堵孔发生原因的基础上，研制了多级破煤系统装置：一级破煤装置对原始煤体进行初始破碎；二级破煤装置对包裹在钻头及钻杆周边的煤渣、煤泥进行破碎、清除；三级破煤装置对小块煤体再次研磨。基于淹没射流速度场分布特征，分析了二级破煤装置射流轴向流速衰减规律，确定了二级破煤装置与一级破煤装置的最佳距离。在此基础上研发了多级破煤水力冲孔工艺，并应用于鹤煤八矿-655轨道石门揭煤瓦斯预抽，应用结果表明采用多级破煤水力冲孔工艺能够实现排渣顺畅，避免堵孔等现象的发生，单孔出煤量为3～8吨，冲孔后瓦斯抽采浓度及抽采流量均提高了3～15倍，石门预抽达标时间缩短至三个月以内，为安全快速揭煤提供了良好基础。
Abstract:
In soft coal seams with low permeability, when using hydraulic punching to enhance the gas drainage, the phenomena of plugging holes and sticking often occur. To solve this problem, the technology of hydraulic punching by multi-stage coal breaking was proposed. Based on the analysis on the causes of plugging holes, the multi-stage coal breaking system device was developed. The 1st level coal breaking device is to crush the original coal initially, the 2nd level coal breaking device is to clear the cinder or slime wrapping the drill and it's surroundings, and the 3rd level coal breaking device is to grind small pieces of coal again. Based on the distribution characteristics of submerged jet velocity field, the attenuation laws of axial velocity on the 2nd level coal breaking device were analyzed, and the optimal distance of the 2nd level coal breaking device and the 1st level coal breaking device was determined. The multi-stage hydraulic punching process was developed, and was applied in gas pre-drainage of the -655 horizontal roadway rock cross-cut coal uncovering in the No.8 Hebi Coal Mine. The application result showed that using the multi-stage hydraulic punching can realize the smooth slagging and avoid the holes plugging. The coal output of single hole was 3 tons to 8 tons, the concentration and flow of gas drainage increased 3~15 times after punching, and the pre-drainage time up to the standard was shortened to 3 months, which provides a good basis for uncovering coal safe and quickly.

参考文献/References:

［1］牛冲槐, 牛彤. 我国煤层气产业化开发的影响因素分析［J］. 太原理工大学学报(社会科学版), 2012, 30(3):30-33 NIU Chong-huai, NIU Tong. Analysis of influencing factors on industrialization development of coal bed gas in China ［J］. Journal of Taiyuan University of Technology, 2012, 30(3):30-33
［2］李晓红, 卢义玉, 赵瑜, 等. 高压脉冲水射流提高松软煤层透气性的研究［J］. 煤炭学报, 2008, 33(12):1386-1390 LI Xiao-hong, LU Yi-yu, ZHAO Yu, et al. Study on improving the permeability of soft coal seam with high pressure pulsed water jet ［J］. Journal of China Coal Society, 2008, 33(12):1386-1390
［3］李浩, 石必明, 李耀. 强突松软近距离煤层群石门揭煤防突技术研究［J］. 中国安全生产科学技术, 2014, 10(1):98-102 LI Hao, SHI Bi-ming, LI Yao. Study on technologies of rock cross-cut coal uncovering and avoiding outburst of gas in condition of soft coal seams with strong gas outburst risk in short distance［J］. Journal of Safety Science and Technology, 2014, 10(1):98-102
［4］刘勇, 卢义玉, 魏建平, 等. 降低井下煤层压裂起裂压力方法研究［J］. 中国安全科学学报, 2013, 23(9):96-100 LIU Yong, LU Yi-yu, WEI Jian-ping, et al. A novel approach and mechanism for decreasing fracture initiation pressure and its application in coal mine ［J］. China Safety Science Journal, 2013, 23(9):96-100
［5］LIU Y, WEI J P, LIU X T. Experimental study on new method of drilling deep hole in soft coal seam ［J］. Disaster Advances, 2013, 6(S2):295-301
［6］余陶, 卢平, 朱贵旺, 等. 穿层钻孔水力压裂强化抽采瓦斯消突技术应用研究［J］. 安全与环境学报, 2010, 10(6):172-175 YU Tao, LU Ping, ZHU Gui-wang, et al. Study on enhanced gas drainage by hydraulic fracture in cross-measure borehole［J］. Journal of Safety and Environments, 2010, 10(6): 171–175
［7］张保法, 刘中一. “三软”高突煤层水力冲孔工艺优化［J］. 煤矿安全, 2013, 44(7):141-143 ZHANG Bao-fa, LIU Zhong-yi. Hydraulic Punching Technology Optimization in “Three Soft” Severe Outburst Coal Seam, 2013, 44(7):141-143
［8］LU Y Y, LIU Y Y, LI X H, et al. A new method of drilling long boreholes in low permeability coal by improving its permeability ［J］. International Journal of Coal Geology, 2010, 84(2):94–102
［9］刘勇, 卢义玉, 李晓红, 等. 高压脉冲水射流顶底板钻孔提高煤层瓦斯抽采率的应用研究［J］. 煤炭学报, 2010, 35(7):1115-1119 LIU Yong, LU Yi-yu, LI Xiao-hong, et al. Application of technique of drilling between roof and floor with high pressure pulse water jet ［J］. Journal of China Coal Society, 2010, 35(7):1115-1119.］
［10］钱鸣高, 刘听成. 矿山压力与岩层控制［M］. 徐州：中国矿业大学出版社, 2003.
［11］沈忠厚. 水射流理论与技术［M］. 东营：中国石油大学出版社, 1998

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备注/Memo

备注/Memo:
长江学者和创新团队发展计划资助（IRT1235）；河南省教育厅科学技术研究重点项目（14A440010）
更新日期/Last Update: 2015-04-30