陕西煤炭2025，Vol.44Issue(5)：47-50,4.DOI:10.20120/j.cnki.issn.1671-749x.2025.0509
切顶留巷Y形通风方式下采空区漏风规律研究
Air leakage law of goaf under Y-shaped ventilation mode of roof-cutting and retaining roadway
武强1
作者信息
- 1. 西山煤电(集团)有限责任公司矿山救护大队,山西太原 030053
- 折叠
摘要
Abstract
In order to further study the problems of air leakage and gas exceeding the limit in goaf under the Y-shaped venti-lation method of roof-cutting and retaining roadway,taking the 22301 working face of Tunlan Mine as the engineering back-ground,a fixed-point release SF6 tracer gas was used for on-site inspection of air leakage and gas emission in the goaf of the working face.The research results indicate that the airflow in the working face leaks into the goaf through the side roadway of the goaf and the lower part of the working face cut,and then re-leaks into the working face at the upper part of the work-ing face cut.The air leakage in the goaf increases the difficulty of preventing and controlling the spontaneous combustion of residual coal and gas in the goaf;Before the initial weighting of the working face,the air volume and leakage of the roof-cut-ting and retaining roadway section showed an increasing trend.The goaf was compacted and stabilized in the later stage,and the air volume and leakage of the retained roadway section gradually decreased,solving the problem of air leakage and gas exceeding the limit in the 22301 working face and ensuring the safety production of the working face.关键词
切顶留巷/Y形通风/采空区漏风/瓦斯涌出Key words
roof-cutting and retaining roadway/Y-shaped ventilation/goaf air leakage/gas emission分类
矿山工程引用本文复制引用
武强..切顶留巷Y形通风方式下采空区漏风规律研究[J].陕西煤炭,2025,44(5):47-50,4.
