FLUENT数值模拟在确定采空区自燃"三带"中的应用
Application of FLUENT numerical simulation in determining goaf spontaneous combustion"three zones"
杨夺1
作者信息
- 1. 内蒙古科技大学矿业与煤炭学院,内蒙古包头 014010
- 折叠
摘要
为了确定综采工作面的采空区自燃"三带"分布情况,采用FLUENT数值模拟方法对老石旦煤矿工作面采空区自燃"三带"进行研究.通过对工作面采空区建立模型、确定采动裂隙O形圈参数,建立采空区渗流控制方程和采空区多孔介质的动量方程,把划分自燃"三带"的指标确定为采空区漏风风速的大小,进行FLUENT数值模拟并绘制风速分布图,依据风速的分布情况确定采空区自燃"三带"范围,为采空区防灭火提供科学依据.
Abstract
In order to determine the distribution of the"three zones"of spontaneous combustion in the goaf of fully mecha-nized mining face,the FLUENT numerical simulation method is used to study the"three zones"of spontaneous combustion in the goaf of Laoshidan Coal Mine.By building a model for the goaf of the working face,the O-ring parameters of mining fracture is determined,the seepage control equation and the momentum equation of the porous media in the goaf are estab-lished,and the index dividing the"three zones"of spontaneous combustion is determined as the size of the air leakage ve-locity in the goaf.FLUENT numerical simulation is carried out and the wind velocity distribution diagram is drawn.Accord-ing to the distribution of wind speed,the"three zones"range of spontaneous combustion in goaf is figured out to provide scientific basis for fire prevention.
关键词
采空区/数值模拟/自燃"三带"Key words
goaf/numerical simulation/spontaneous combustion"three zones"引用本文复制引用
基金项目
内蒙古自治区高等学校科学研究项目资助(NJZY22439)
出版年
2024
国家科技期刊平台
NSTL
万方数据