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[1]芮少阁,姚韦靖,黄鑫,等.梯形非对称沿空掘巷小煤柱合理留设宽度及支护设计*[J].中国安全生产科学技术,2025,21(8):63-70.[doi:10.11731/j.issn.1673-193x.2025.08.008]
　RUI Shaoge,YAO Weijing,HUANG Xin,et al.Rational width setting and support design for small coal pillars in trapezoidal asymmetric gob-side entry driving[J].Journal of Safety Science and Technology,2025,21(8):63-70.[doi:10.11731/j.issn.1673-193x.2025.08.008]
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梯形非对称沿空掘巷小煤柱合理留设宽度及支护设计*

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
21
期数:
2025年8期
页码:
63-70
栏目:
职业安全卫生管理与技术
出版日期:
2025-08-30

文章信息/Info

Title:
Rational width setting and support design for small coal pillars in trapezoidal asymmetric gob-side entry driving
文章编号:
1673-193X(2025)-08-0063-08
作者:
芮少阁; 姚韦靖; 黄鑫; 程斌; 孟祥飞; 赵宏志
(1.安徽理工大学 土木建筑学院，安徽 淮南 232001；
2.安徽理工大学 矿山地下工程教育部工程研究中心，安徽 淮南 232001；
3.安徽理工大学 矿业工程学院，安徽 淮南 232001；
4.淮北矿业股份有限公司许疃煤矿，安徽 淮北 235000)
Author(s):
RUI Shaoge;  YAO Weijing;  HUANG Xin;  CHENG Bin;  MENG Xiangfei;  ZHAO Hongzhi
(1.School of Civil Engineering and Architecture,Anhui University of Science & Technology,Huainan Anhui 232001,China;
2.Engineering Research Center of Underground Mine Construction,Ministry of Education,Anhui University of Science & Technology,Huainan Anhui 232001；
3.School of Mining Engineering,Anhui University of Science & Technology,Huainan Anhui 232001;
4.Xutuan Coal Mine,Huaibei Mining Co.,Ltd.,Huaibei Anhui 235000,China)
关键词:
小煤柱宽度; 沿空掘巷; 数值计算; 塑性区; 非对称支护; 效果评价
Keywords:
small coal pillar width;  gob-side entry driving;  numerical calculation;  plastic zone;  asymmetric support;  effectiveness evaluation
分类号:
TD353；X936
DOI:
10.11731/j.issn.1673-193x.2025.08.008
文献标志码:
A
摘要:
针对小煤柱沿空掘巷围岩变形控制难题，以许疃煤矿32310工作面为背景，通过理论计算初步确定小煤柱合理留设宽度范围为5.59~6.45 m，再运用FLAC3D软件对6种不同留设宽度下煤柱开展数值计算，基于位移与塑性区变化规律确定合理留设宽度，并通过比选支护参数得到最佳方案。研究结果表明：该巷道小煤柱合理留设宽度为6.0 m，采用“锚杆索联合+锚网+注浆”的非对称顶帮协同支护方案后，现场监测显示，顶板最大下沉量控制在90 mm以内，两帮移进量小于75 mm，可以有效控制围岩变形，并取得良好的支护效果。研究结果可为类似巷道的支护设计提供参考和借鉴。
Abstract:
In order to address the challenging issue of surrounding rock deformation control in gob-side entry driving with small coal pillars,this study focuses on the 32310 working face of Xutuan Coal Mine.Through theoretical calculations,the rational width range for small coal pillars was preliminarily determined as 5.59~6.45 m.FLAC3D numerical simulations were then conducted for six different pillar widths.Based on displacement patterns and plastic zone evolution,the optimal width was identified,and support parameters were optimized through comparative analysis.The results demonstrate that the rational width for the small coal pillar in this roadway is 6.0 m.After implementing an asymmetric support system combining “bolt-cable coupling + wire mesh + grouting” for coordinated roof and ribs control,field monitoring data indicate that the maximum roof subsidence is controlled within 90 mm,and the convergence of roadway ribs is less than 75 mm.This approach effectively controls surrounding rock deformation and achieves excellent support performance.These findings provide insights for support design in similar mining roadways.

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　YANG Yanguo,FAN Nan,PAN Jun,et al.Experimental study on reasonable leaving of small coal pillar for gob-side entry driving in extra-thick coal seam[J].Journal of Safety Science and Technology,2017,13(8):104.[doi:10.11731/j.issn.1673-193x.2017.12.016]
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备注/Memo

备注/Memo:
收稿日期： 2025-01-20
* 基金项目： 2024年安徽省博士后科研项目(2024C943)；2023年淮南市科技计划项目(2023A313)；2024年安徽省研究生教育质量工程研究生创新创业实践项目(2024cxcysj092)；2024年安徽理工大学研究生创新基金项目(2024CX2022)
作者简介： 芮少阁，硕士研究生，主要研究方向为井巷支护工程。
通信作者： 姚韦靖，博士，副教授，主要研究方向为岩土工程。
更新日期/Last Update: 2025-09-01