山东煤炭科技2024，Vol.42Issue(7)：114-119,6.DOI:10.3969/j.issn.1005-2801.2024.07.022
底板承压水上底抽巷布置层位及围岩控制技术研究
Research on the Upper Bottom Drainage Roadway Layout Layer Location and Surrounding Rock Control Technology of Floor Confined Water
段东东1
作者信息
- 1. 河南焦煤能源有限公司古汉山矿,河南 焦作 454000
- 折叠
摘要
Abstract
In response to the existing problems of difficulties in controlling the surrounding rock and the easy occurrence of water inrush accidents in the bottom drainage roadway of Guhanshan Mine under high stress and floor confined water conditions,a comprehensive method of theoretical analysis,numerical simulation,and on-site testing is used to study the occurence mechanism of water inrush in the bottom drainage roadway floor and the damage characteristics of surrounding rock.A comprehensive governance technology for the surrounding rock of the bottom drainage roadway is proposed.The research results indicate that the existing asymmetric plastic zone in the surrounding rock of the bottom drainage roadway increases the risk of water inrush after the thickness of the floor waterproof layer decreases;The reasonable layout location of the bottom drainage roadway should have a vertical distance of 12 m from the coal seam floor and a horizontal internal displacement of 8 m from the stoping roadway;Adopting the method of improving support strength and cooperating with grouting to achieve coordinated governance of the bottom drainage roadway;During the experiment period,the deformation of the roof and floor of the bottom drainage roadway is 252 mm,and the deformation of the two sides is 219 mm,which improves the gas extraction rate,ensures safe mining of the working face,and provides technical reference for the governance of bottom drainage roadways under similar geological conditions.关键词
底板承压水/底抽巷/底板突水/围岩控制Key words
floor confined water/bottom drainage roadway/floor water inrush/surrounding rock control分类
矿业与冶金引用本文复制引用
段东东..底板承压水上底抽巷布置层位及围岩控制技术研究[J].山东煤炭科技,2024,42(7):114-119,6.
