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[1]年军,李润芝,刘浩,等.腾晖煤业采空区顶板超长定向钻孔模拟与应用研究[J].中国安全生产科学技术,2019,15(7):87-93.[doi:10.11731/j.issn.1673-193x.2019.07.014]
　NIAN Jun,LI Runzhi,LIU Hao,et al.Study on simulation and application of roof superlong directional borehole in goaf of Tenghui coal industry[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(7):87-93.[doi:10.11731/j.issn.1673-193x.2019.07.014]
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腾晖煤业采空区顶板超长定向钻孔模拟与应用研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年7期
页码:
87-93
栏目:
职业安全卫生管理与技术
出版日期:
2019-07-31

文章信息/Info

Title:
Study on simulation and application of roof superlong directional borehole in goaf of Tenghui coal industry
文章编号:
1673-193X(2019)-07-0087-07
作者:
年军1; 2; 3; 李润芝2; 3; 刘浩2; 3; 回春伟2; 3
（1.辽宁工程技术大学 安全与工程学院，辽宁 阜新 123000；
2.煤科集团沈阳研究院有限公司，辽宁 沈阳 110000；
3.煤矿安全技术国家重点实验室，辽宁 抚顺 113000)
Author(s):
NIAN Jun1; 2; 3;  LI Runzhi2; 3;  LIU Hao2; 3;  HUI Chunwei2; 3
(1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;
2. CCTEG Shenyang Research Institute, Shenyang Liaoning 110000, China;
3. State Key Laboratory of Coal Mine Safety Technology, Fushun Liaoning 113000, China)
关键词:
腾晖煤业; 采空区; 顶板超长定向钻孔; 模拟与应用
Keywords:
Tenghui coal industry;  goaf;  roof superlong directional borehole;  simulation and application
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2019.07.014
文献标志码:
A
摘要:
基于采动裂隙椭抛带理论提出顶板超长定向钻孔治理技术，通过理论推导、数值模拟、现场应用相结合的方法对腾晖煤业2-100放顶煤工作面顶板超长定向钻孔的合理距离及合理层位进行研究。研究结果表明：1~5号顶板超长定向钻孔内错回风巷的合理距离为20~40 m；钻孔的合理终孔层位依次为60,60,60,61和63 m。顶板初次垮落后，顶板超长定向钻孔开始发挥作用，单孔的瓦斯抽采纯量随着工作面推进开始呈周期性变化，当顶板岩层发生周期性垮落时，钻孔瓦斯抽采纯量开始急剧升高；抽采纯量达到的最大值分别为13.88 ，13.92 ，13.96，14.24 和14.32 m3/min；顶板超长定向钻孔抽采期间，上隅角瓦斯浓度与回风流瓦斯浓度呈周期性变化趋势，上隅角瓦斯浓度为0.32%~0.8%，整个过程中上隅角瓦斯浓度均在可控范围内。顶板超长定向钻孔治理技术可有效解决放顶煤工作面采空区的瓦斯治理难题。
Abstract:
The control technology of roof superlong directional borehole was put forward based on the theory of mining fissure elliptic paraboloid zone, and the reasonable distance and horizon of the roof superlong directional borehole in the 2-100 top caving coal face of Tenghui coal industry were studied through the combined method of theoretical derivation, numerical simulation and field application. The results showed that the reasonable distance for the internal staggered return airway of the No. 1 to No. 5 roof superlong directional borehole was 20-40 m, and the reasonable end borehole horizon was 60 m, 60 m, 60 m, 61 m and 63 m in turn. After the first collapse of the roof, the roof superlong directional borehole began to play its role, and the pure drainage quantity of gas with single hole started to present the periodical change with the advancement of working face. When the roof strata occurred the periodical collapse, the pure drainage quantity of borehole gas began to rise sharply, and the maximum value of pure drainage quantity was 13.88 m3/min, 13.92 m3/min, 13.96 m3/min, 14.24 m3/min and 14.32 m3/min, respectively. The gas concentration at the upper corner and the gas concentration of return air flow showed a periodic change trend during the drainage process of roof superlong directional borehole, and the gas concentration at the upper corner was 0.32%-0.8%, which was in the controlled range during the whole process. The control technology of roof superlong directional borehole can effectively solve the difficult problem of gas control in the goaf of top caving coal face.

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备注/Memo

备注/Memo:
收稿日期： 2019-05-15
* 基金项目： 国家自然科学基金项目（51774165）
作者简介： 年军，博士，副研究员，主要研究方向为煤矿通风与安全。
通信作者： 李润芝，硕士，主要研究方向为煤矿通风与瓦斯防治。
更新日期/Last Update: 2019-08-07