CFD在采空区三带划分的模拟应用及分析
Simulation Application and Analysis of CFD in the Division of Three Zones in Goaf
秦江平1
作者信息
- 1. 山西泽泰安全技术咨询有限公司,山西 太原 030024
- 折叠
摘要
煤矿防灭火工作中,采空区一直是防范的重点.当工作面开采完成后,"三带"特征会清晰的出现在采空区上方.旺岭煤矿根据综放工作面采空区的实际情况,建立数值模拟分析,对采空区"三带"的范围进行合理划分并得出其分布规律.以此确定工作面采空区进、回风侧煤自然发火的"三带"临界点,从而得知降低推进速度的时间节点,并提出针对性防治措施,以防采空区发生煤炭自燃危害.
Abstract
In coal mine fire prevention and extinguishing work,goaf has always been the focus of prevention.After the mining of the working face is completed,the"three zones"feature will clearly appear above the goaf.Wangling Coal Mine established numerical simulation analysis based on the actual situation of the goaf in the fully mechanized mining face,and reasonably divided the scope of the"three zones"of the goaf and obtained their distribution patterns.Based on this,the critical points of the"three zones"for coal spontaneous combustion on the inlet and return air sides of the goaf are determined,and the time nodes for reducing the propulsion speed are identified.Targeted prevention and control measures are proposed to prevent coal spontaneous combustion hazards in the goaf.
关键词
采空区/"三带"划分/数值模拟Key words
goaf/the division of"three belts"/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据