煤炭与化工2025，Vol.48Issue(9)：20-23,4.DOI:10.19286/j.cnki.cci.2025.09.005
宏远煤业沿空掘巷应力分布及小煤柱宽度研究
Study on stress distribution and small coal pillar width of gob-side entry in Hongyuan Coal Industry
韩军军 1李小斌 1邹建鹏 1马昊宾2
作者信息
- 1. 山西煤炭进出口集团左权宏远煤业有限公司,山西 晋中 032600
- 2. 河南理工大学河南理工产业技术研究院有限公司,河南焦作 454003
- 折叠
摘要
Abstract
In order to improve the resource recovery rate,technology small coal pillars of gob-side entry was used in the return wind groove of No.15203 Face of Zuoquan Hongyuan Coal Industry.Through theoretical calculation and numerical simulation,the range of stress reduction zone after mining in the upper section of working face was mutually verified,and the width of coal pillar should not be more than 10 m.The numerical simulation and comparison of the plastic zone range and stress distribution of surrounding rock under different width coal pillar conditions were carried out.It was found that the vertical stress in the coal pillar with 6～8 m or 20 m width was lower than that in the coal pillar with 8～20 m width,and the plastic zone in the coal pillar with 6～8 m width was not completely connected.Combined with the actual production conditions,the width of the coal pillar was finally determined to be 7 m.Roadway support was anchor cable+bolt with metal mesh protection table.The cumulative deformation of coal pillar side was 288 mm,the cumulative deformation of coal mining side was 179 mm,the cumulative subsidence of roof was 168 mm,and the cumulative amount of floor heave was 676 mm.关键词
小煤柱宽度/沿空掘巷/塑性区分布/围岩控制/巷道变形/侧向支承应力Key words
width of small coal pillar/gob-side entry/distribution of plastic zones/surrounding rock control/deformation of the roadway/lateral support stresses分类
矿业与冶金引用本文复制引用
韩军军,李小斌,邹建鹏,马昊宾..宏远煤业沿空掘巷应力分布及小煤柱宽度研究[J].煤炭与化工,2025,48(9):20-23,4.
