|本期目录/Table of Contents|

[1]李宏,刘明举,高宏.高突矿井大采高工作面瓦斯抽采技术及实践[J].中国安全生产科学技术,2019,15(6):99-104.[doi:10.11731/j.issn.1673-193x.2019.06.016]
　LI Hong,LIU Mingju,GAO Hong.Technology of gas extraction in working face with large mining height of high outburst mine and its practice[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(6):99-104.[doi:10.11731/j.issn.1673-193x.2019.06.016]
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高突矿井大采高工作面瓦斯抽采技术及实践
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年6期
页码:
99-104
栏目:
职业安全卫生管理与技术
出版日期:
2019-06-30

文章信息/Info

Title:
Technology of gas extraction in working face with large mining height of high outburst mine and its practice
文章编号:
1673-193X(2019)-06-0099-06
作者:
李宏1; 刘明举1; 高宏2; 3
(1.河南理工大学 安全科学与工程学院，河南 焦作 454000；
2.煤科集团沈阳研究院有限公司，辽宁 沈阳 110016；
3.煤矿安全技术国家重点实验室，辽宁 抚顺 113122)
Author(s):
LI Hong1;  LIU Mingju1;  GAO Hong2; 3
(1. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China;
2. CCTEG Shenyang Research Institute, Shenyang Liaoning 110016, China;
3. State Key Laboratory of Coal Mine Safety Technology, Fushun Liaoning 113122, China)
关键词:
上隅角; 中位钻孔; 顶板走向长钻孔; 底板定向长钻孔
Keywords:
upper corner;  median level borehole;  long borehole along roof;  directional long drilling in floor
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2019.06.016
文献标志码:
A
摘要:
为解决大采高厚煤层工作面回采期间瓦斯超限难题，应用顶板走向长钻孔中位钻孔和下临近层底板定向长钻孔等瓦斯抽采措施，对回采面瓦斯进行了多源头治理。通过对顶板走向长钻孔的抽采效果考察，确定其垂直层位为40±5 m范围、水平层位为50±10 m范围为最佳瓦斯抽采区域；中位钻孔合理的垂直层位为20 m左右，水平层位为45~50 m范围抽采效果最佳；下临近层底板定向长钻孔是拦截下部5#煤和7#煤向上部采掘空间涌出瓦斯的有效手段，其最佳的水平层位为距巷道轮廓线20 m范围，垂直层位为钻孔布置在下临近层煤层中。通过对3种不同瓦斯治理措施的综合评价考察，确定顶板走向长钻孔是治理回采面最为有效的措施，其抽采量占工作面回采期间总抽采量的79.6%，中位钻孔抽采和下临近层底板定向长钻孔抽采是回采面回采期间的辅助性措施。措施使用后，工作面上隅角瓦斯浓度保持在0.4%~0.6%之间，有效保证了工作面的安全高效回采。
Abstract:
In order to solve the problem of gas overlimit during the mining period in the working face with large mining height oin thick coal seam, the multisource gas control was carried out on the coal body in the mining face by using the gas extraction measures of long borehole along roof, median level borehole, directional long borehole in lower adjacent seam floor, etc. Through the investigation on the extraction effect of long borehole along roof, it was determined that the optimal gas extraction area of long borehole along roof was the vertical position of 40±5 m and the horizontal position of 50±10 m. For the median level borehole, the extraction effect was the best when the vertical position was about 20 m and the horizontal position was 45-50 m. The directional long borehole in lower adjacent seam floor was an effective mean to intercept the gas emission from the lower 5# coal and 7# coal to the upper mining space, its optimal horizontal position was 20 m away from the contour of roadway, and the vertical position was laying the borehole in the lower adjacent coal seam. Through the comprehensive evaluation of three different gas control measures, it was determined that the long borehole along roof was the most effective measure for controlling the mining face, and its extraction amount accounted for 79.6% of the total extraction amount during the mining period of working face. The median level borehole extraction and the directional long borehole extraction in lower adjacent seam floor were the auxiliary measures during the mining period of working face. After applying the measures, the gas concentration at upper corner of working face maintained between 0.4% and 0.6%, which effectively ensured the safe and efficient mining of the working face.

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备注/Memo

备注/Memo:
收稿日期： 2019-04-25；数字出版日期：2019-06-28
* 基金项目： 国家自然科学基金项目（51774116）；河南省高校基本科研业务费专项资金项目（NSFRF140103）
作者简介： 李宏，博士研究生，中级工程师，主要研究方向为煤矿瓦斯防治技术及管理。
更新日期/Last Update: 2019-07-09