无煤柱开采采空区漏风防治技术研究
Research on Air Leakage Prevention and Control Technology in Non Coal Pillar Mining Goaf
许跃强 1刘志强1
作者信息
- 1. 中煤新登郑州煤业有限公司,河南 郑州 450000
- 折叠
摘要
针对新登煤矿 22 采区无煤柱开采的方式下存在 22051 采空区与邻近采空区大面积漏风问题,通过分析 22051 采空区漏风途径,提出了封堵 22051 副巷,将 22031 与 22071 机巷调整为均压通风的方式改善通风现状,对 22051 停采线气体进行束管监测分析,验证了漏风治理效果.束管监测结果显示:22051 采空区停采线北部通过封堵已达到有效治理,停采线南部因机巷漏风造成氧气浓度回升,对切巷下口采空区侧20 m、实体煤侧10 m范围内的机巷实施了喷浆封闭巷道,进一步减少漏风.
Abstract
Aiming at the problem of large-scale air leakage in the 22051 goaf and adjacent goaf under the mining way of non coal pillar mining in the 22th mining area of Xindeng Coal Mine,by analyzing the air leakage pathways in the 22051 goaf,it is proposed to block the 22051 auxiliary roadway,adjust the 22031 and 22071 machine lanes to uniform pressure ventilation to improve the ventilation situation,and conduct tube monitoring and analysis on the gas of the 22051 shutdown line to verify the effectiveness of air leakage control.The monitoring results of the bundle tube show that the northern part of the stop mining line in the 22051 goaf has been effectively treated through sealing,while the southern part of the stop mining line has experienced an increase in oxygen concentration due to air leakage in the machine roadway.Spray grouting has been implemented to seal the machine roadway within a range of 20 m on the goaf side and 10 m on the solid coal side below the cut roadway,further reducing air leakage.
关键词
无煤柱开采/采空区漏风/喷浆堵漏/均压通风Key words
non coal pillar mining/air leakage in goaf/spray grouting for plugging leaks/uniform pressure ventilation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据