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[1]李浩,石必明,,等.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.[doi:10.11731/j.issn.1673-193x.2014.01.016]
 LI Hao,SHI Bi ming,LI Yao.Study on technologies of rock crosscut coa 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.[doi:10.11731/j.issn.1673-193x.2014.01.016]
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强突松软近距离煤层群石门揭煤防突技术研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
10
期数:
2014年1期
页码:
98-102
栏目:
职业安全卫生管理与技术
出版日期:
2014-01-28

文章信息/Info

Title:
Study on technologies of rock crosscut coa uncovering and avoiding outburst of gas in condition of soft coal seams with strong gas outburst risk in short distance
作者:
李浩12石必明12李耀12
(1安徽理工大学 能源与安全学院,安徽淮南232001; 2煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001)
Author(s):
LI Hao12SHI Biming12 LI Yao12
(1 School of Energy and Safety, Anhui University of Science and Technology, Huainan Anhui 232001, China; 2 The Key Laboratory of Safe and Efficient Exploitation in Coal Mining of Ministry of Education,Huainan Anhui 232001, China)
关键词:
强突松软近距离煤层群石门揭煤低压水力冲孔卸压增透
Keywords:
soft coal seams with strong gas outburst risk in short distance rock crosscut coal uncovering hydraulic flushing in condition of low pressure pressure relief and enhanced gas permeability
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2014.01.016
文献标志码:
A
摘要:
为了研究强突松软近距离煤层群石门揭煤防突技术,安全、顺利地揭煤,基于海孜矿Ⅱ32主运石门地质条件和瓦斯赋存状况,对近距离煤层群9+8煤层实施密集预抽钻孔抽采瓦斯与低压水力冲孔卸压增透相结合的措施,防治煤与瓦斯突出。结果表明:低压水力冲孔冲煤率达到45%;冲孔后瓦斯抽采流量为未冲孔的10倍以上;整体瓦斯抽采率达到717%,比以前提高了约16倍,卸压增透效果明显。预抽钻孔抽采后,9煤、8煤的残余瓦斯压力,分别为03MPa、022MPa,残余瓦斯含量分别为523m3/t、513m3/t,防突效果显著,可安全、顺利地揭开9+8煤层。
Abstract:
For researching the technologies of rock crosscut coa uncovering and avoiding outburst of gas in condition of soft coal seams with strong gas outburst in short distance, meanwhile for uncovering coal safely and smoothly, the gas of 9+8 coal seam was extracted by preextraction drilling and hydraulic flushing in condition of low pressure in order to avoid the outburst of coal and gas based on the geological condition and gas occurrence ofⅡ32 main crosscut in Haizi Coal Mine. The results showed that: When the rate of impulse coals reaches 45%, the gas flow becomes 10 times than that before punching. Meanwhile, the whole rate of gas extraction increases 16 times which reaches 717% and the effect of pressure relief and enhanced gas permeability is remarkable. After preextraction drilling, the residual gas pressure of Coal 9 is 03Mpa, for Coal 8 it is 022Mpa. The gas remainder quantity of Coal 9 is 523m3/t, for Coal 8 it is 513m3/t. It can uncover the 9+8 coal seam safely and smoothly, and the effect of avoiding outburst is significant.

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备注/Memo

备注/Memo:
国家自然科学基金项目(51204007)
更新日期/Last Update: 2014-01-30