|本期目录/Table of Contents|

[1]李重情,盛恒,刘健.深孔预裂爆破对含坚硬顶板高瓦斯煤层的综合作用研究[J].中国安全生产科学技术,2015,11(1):71-76.[doi:10.11731/j.issn.1673-193x.2015.01.012]
 LI Zhong-qing,SHENG Heng,LIU Jian.Study on combined effect of deep hole pre-splitting blasting to high gas coal seam with hard roof[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(1):71-76.[doi:10.11731/j.issn.1673-193x.2015.01.012]
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深孔预裂爆破对含坚硬顶板高瓦斯煤层的综合作用研究
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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1期
页码:
71-76
栏目:
职业安全卫生管理与技术
出版日期:
2015-01-30

文章信息/Info

Title:
Study on combined effect of deep hole pre-splitting blasting to high gas coal seam with hard roof
作者:
李重情12盛恒3刘健12
(1.安徽理工大学 能源与安全学院,安徽淮南232001;2. 安徽理工大学 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;3.淮南矿业集团顾桥矿,安徽淮南232131)
Author(s):
LI Zhong-qing12 SHENG Heng3 LIU Jian12
(1.School of Energy and Safety, Anhui University of Science and Technology, Huainan Anhui 232001, China; 2.Key Laboratory of Mining Coal Safety and Efficiently Constructed by Anhui Province and Ministry of Education, Huainan Anhui 232001, China;3.Guqiao
关键词:
深孔预裂爆破坚硬顶板初次来压卸压增透瓦斯抽采
Keywords:
deep hole pre-splitting blasting hard roof first weighting pressure relief and permeability improvement gas drainage
分类号:
X936;TD235
DOI:
10.11731/j.issn.1673-193x.2015.01.012
文献标志码:
A
摘要:
为研究深孔预裂爆破技术在含坚硬顶板高瓦斯煤层开采中的应用,以顾桥矿1123(1)工作面坚硬顶板为研究对象,基于小挠度理论建立了坚硬顶板垮落力学模型,导出了初次来压步距计算式;综合考虑瓦斯抽采需要,对深孔预裂爆破孔进行了优化设计,并在工作面顶板中开展了现场试验研究。结果表明:在工作面推进至27.3m时出现垮落,爆破后钻孔瓦斯流量显著增加,部分提高至30倍以上,瓦斯抽采量提高了3.5倍,初采期间安全回采煤炭25万吨,实现了坚硬顶板控制和卸压增透双重作用。
Abstract:
To research the utilization of deep hole pre-splitting blasting technology in high gas coal seam with hard roof, 1123(1) mining face in Guqiao Coal Mine was chosen as the study object. Based on small deflection theory, the mechanic model of hard roof caving was established and the formula of first weighting was deduced. In view of the need of gas drainage, optimal design was proposed to the deep hole pre-splitting blasting, and the field test was carried out in the roof of working face. The results showed that roof caving came when mining face advanced to 27.3m. The borehole gas flow increased significantly after blasting, with some flow increased with more than 30 times. And the gas drainage quantities also increased with 3.5 times. With 0.25 million tons coal mined during preliminary mining, the technology fulfilled the combined effect of hard roof control and pressure relief and permeability improvement.

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金项目(51004003)
更新日期/Last Update: 2015-02-03