山东煤炭科技2024，Vol.42Issue(3)：1-4,15,5.DOI:10.3969/j.issn.1005-2801.2024.03.001
孤岛综放工作面小煤柱沿空掘巷围岩控制技术研究
Research on Surrounding Rock Control Technology for Small Coal Pillar Roadway Excavation Along Goaf in Isolated Island Fully Mechanized Caving Face
马政1
作者信息
- 1. 山西兰花同宝煤业有限公司,山西 晋城 048400
- 折叠
摘要
Abstract
In order to improve the coal resource recovery rate of the 15106 isolated island working face in Tongbao Coal Industry,it is put forward that the technology of roadway excavation along goaf with leaving small coal pillar should be adopted to construct the auxiliary transportation groove.Through theoretical calculation and numerical simulation analysis,the width of the small coal pillar is determined to be 8 m,and a joint support scheme of"anchor mesh cable+coal pillar side anchor cable beam reinforcement+broken section coal pillar side roadway side grouting reinforcement"is proposed.The application results show that the maximum displacement amount of the coal pillar side and solid coal side is 223.56 mm and 68.36 mm,respectively,the maximum subsidence amount of the roof is 216.52 mm,and the maximum bulge amount at the bottom is 172.54 mm.The deformation and control effect of the surrounding rock of the roadway along goaf is significant.In addition,after adopting the technology of small coal pillar roadway excavation along goaf,the width of the section coal pillar is reduced from 25 m to 8 m,and about 101 500 tons of coal pillar resources can be recovered more,with significant economic benefits.关键词
综放/沿空/煤巷/支护Key words
fully mechanized caving/along goaf/coal roadway/support分类
矿业与冶金引用本文复制引用
马政..孤岛综放工作面小煤柱沿空掘巷围岩控制技术研究[J].山东煤炭科技,2024,42(3):1-4,15,5.
