煤矿安全2017，Vol.48Issue(3)：178-181,4.DOI:10.13347/j.cnki.mkaq.2017.03.048
煤层分层前后采空区自燃“三带”的数值模拟
Numerical Simulation on Spontaneous Combustion "Three Zones" of Goaf Before and After Coal Seam Layering
摘要
Abstract
Due to the coal seam layering in the mining process of coal mine,there were two coal seams remained in goaf.In order to study the effect of coal seam layering on spontaneous combustion "three zones" of goaf,the distribution of oxygen volume fraction in goaf was simulated by FLUENT before and after coal seam layering.The result of numerical simulation was compared with the data from the spot,which is highly coincided with the spot.At the same time,the two simulation results of "three zones" were compared and analyzed.The results show that after the coal seam layering,the width of heat dissipation zone decreased by 7 m and the width of spontaneous combustion zone decreased by 3 m in return air side compared with that before the coal seam layering;the width of spontaneous combustion zone decreased by 1 m in intake air side.The change of amount and spatial distribution of residual coal in goaf results in the change of spontaneous combustion "three zones" of goaf.关键词
煤自燃/煤层分层/采空区自燃“三带”/数值模拟/FluentKey words
coal spontaneous combustion/coal seam layering/spontaneous combustion "three zones" of goaf/numerical simulation/Fluent分类
矿业与冶金引用本文复制引用
文虎,张泽,赵庆伟,刘文永,郭军..煤层分层前后采空区自燃“三带”的数值模拟[J].煤矿安全,2017,48(3):178-181,4.基金项目
中国博士后科学基金资助项目(2014M552466) （2014M552466）
陕西省自然科学基础研究计划资助项目(2016JM5022) （2016JM5022）
陕西省重点科技创新团队计划资助项目(2012KCT-09) （2012KCT-09）
