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[1]席杰,王兆丰,陈金生,等.基于覆岩破坏传递的超前自卸压区影响宽度研究*[J].中国安全生产科学技术,2021,17(6):46-51.[doi:10.11731/j.issn.1673-193x.2021.06.008]
　XI Jie,WANG Zhaofeng,CHEN Jinsheng,et al.Study on influence width of advanced self-relief pressure zone based on overburden failure transmission[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(6):46-51.[doi:10.11731/j.issn.1673-193x.2021.06.008]
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基于覆岩破坏传递的超前自卸压区影响宽度研究*()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年6期
页码:
46-51
栏目:
职业安全卫生管理与技术
出版日期:
2021-06-30

文章信息/Info

Title:
Study on influence width of advanced self-relief pressure zone based on overburden failure transmission
文章编号:
1673-193X(2021)-06-0046-06
作者:
席杰; 王兆丰; 陈金生; 李学臣; 李艳飞; 马雄伟
(1.河南理工大学 安全科学与工程学院，河南 焦作 454003；
2.河南理工大学 煤矿灾害预防与抢险救灾教育部工程研究中心，河南 焦作 454003；
3.煤炭安全生产与清洁高效利用省部共建协同创新中心，河南 焦作 454003；
4.焦作煤业(集团)有限责任公司，河南 焦作 454000；
5.河南能源集团焦煤公司古汉山矿，河南 焦作 454300)
Author(s):
XI Jie;  WANG Zhaofeng;  CHEN Jinsheng;  LI Xuechen;  LI Yanfei;  MA Xiongwe
(1.School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003;2.MOE Engineering Center of Mine Disaster Prevention and Rescue,Henan Polytechnic University,Jiaozuo Henan 454003;3.State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization,Henan Polytechnic University,Jiaozuo Henan 454003;4.Jiaozuo Coal Industry (Group) Co.,Ltd.,Jiaozuo Henan 454000;5.Guhanshan Mine,Henan Energy Group Jiaozuo Co.,Ltd.,Jiaozuo Henan 454300)
关键词:
瓦斯抽采; 超前自卸压区; 摩尔库伦准则; 采动煤体; 覆岩破坏传递
Keywords:
gas drainage;  advanced self-relief pressure zone;  Mohr-Coulomb criterion;  mining-induced coal body;  overburden failure transmission
分类号:
X936；TD713
DOI:
10.11731/j.issn.1673-193x.2021.06.008
文献标志码:
A
摘要:
为确定超前自卸压区的宽度，将其更好地应用于边采边抽钻孔布置中，探讨影响超前自卸压范围的主要因素，揭示卸压区宽度与工作面超前支承压力的内在联系，根据压力拱曲线平移特性，提出在覆岩破坏传递过程中，冒落带随回采周期性垮落，造成超前支承压力重分布，简化工作面开采模型，推导计算卸压区宽度的理论新方法并进行现场试验验证。结果表明：通过实测采面前方顺层钻孔的瓦斯抽采纯量，确定超前自卸压区宽度为28~30 m；距工作面＞20~40 m范围为卸压瓦斯高效抽采区，平均瓦斯抽采纯量0.074 m3/min，为卸压前的3.89倍；考虑覆岩破坏传递的超前自卸压区宽度计算值为29.97 m。计算值与实测结果较吻合，验证该方法的可行性，为井下卸压区高效抽采提供借鉴。
Abstract:
To determine the width of the advanced self-relief pressure zone and better apply it to the layout of boreholes while mining with gas drainage,the main factors affecting the range of advanced self-relief pressure were discussed,and the internal relationship between the width of pressure relief zone and the advanced support pressure of working face was revealed.According to the translational characteristics of the pressure arch curve,it was proposed that during the process of overburden failure transmission,the caving zone periodically collapsed with the mining,resulting in the redistribution of the advanced support pressure.After simplifying the mining model of working face,a new theoretical method for calculating the width of pressure relief zone was derived,and the field test verification was conducted.The results showed that through measuring the pure quantity of gas drainage of the bedding boreholes in front of the mining front,the width of the advanced self-relief pressure zone was determined to be 28~30 m.The range of ＞20~40 m away from the working face was the high-efficiency drainage area of pressure relief gas,and the average gas drainage pure quantity was 0.074 m3/min,which was 3.89 times of that before pressure relief.Considering the overburden failure transmission,the calculation value of the width of advanced self-relief pressure zone was 29.97 m,which was in good agreement with the measured results and verified the feasibility of this method.It provides a reference for the high-efficiency drainage in the underground pressure relief zone.

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备注/Memo

备注/Memo:
收稿日期： 2020-11-06
* 基金项目： 河南省高等学校重点科研项目(19B440002)；河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金项目(WS2018B13)；河南理工大学博士基金项目(B2018-58)
作者简介： 席杰，硕士研究生，主要研究方向为瓦斯灾害预测与防治。
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