陕西煤炭2025，Vol.44Issue(10)：25-29,54,6.DOI:10.20120/j.cnki.issn.1671-749x.2025.1005
高抽巷U形通风系统对上隅角瓦斯浓度影响及优化研究
Influence and optimization of U-shaped ventilation system in high extraction roadway on upper corner's gas concentration
李东东 1高亚斌 2张喜林 1刘国强 2张志强1
作者信息
- 1. 山西煤炭运销集团盂县恒泰常顺煤业有限公司,山西阳泉 045199
- 2. 太原理工大学安全与应急管理工程学院,山西太原 030024
- 折叠
摘要
Abstract
When using a U-shaped ventilation system in the 15101 working face of Changshun Coal Mine,gas accumulation often occurs in the upper corner area.To address this issue,this study utilized Fluent software for numerical simulation and conducted an in-depth analysis of the effects of a U-shaped ventilation system on gas migration,air leakage,and changes in gas concentration in the goaf and upper corner under high extraction conditions.The flow characteristics and aggregation trend of gas in goaf were revealed through simulation.We have proposed a gas control method that combines U-shaped venti-lation,high extraction roadway,and upper corner buried pipes.By adjusting the burial depth and the negative pressure of gas extraction,the influence of different parameters on the gas extraction effect was explored.The research results show that the gas concentration in the upper corner was the lowest when the burial depth of the upper corner pipe was about 10 meters,and the extraction negative pressure of the upper corner pipe was 20 kPa,resulting in the best extraction effect.These find-ings provide scientific theoretical support for the implementation of upper corner's buried pipe layout on site,which helps optimize gas control measures and ensure the safety of mine operations.关键词
高抽巷/瓦斯治理/上隅角埋管/数值模拟Key words
high extraction roadway/gas control/buried pipe in upper corner/numerical simulation分类
矿业与冶金引用本文复制引用
李东东,高亚斌,张喜林,刘国强,张志强..高抽巷U形通风系统对上隅角瓦斯浓度影响及优化研究[J].陕西煤炭,2025,44(10):25-29,54,6.
