煤矿安全2017，Vol.48Issue(11)：163-166,4.DOI:10.13347/j.cnki.mkaq.2017.11.044
采空区瓦斯涌出情况对瓦斯浓度及自燃带分布的影响
Influence of Goaf Gas Emission on Gas Concentration and Spontaneous Combustion Zone Distribution
摘要
Abstract
By using Fluent software,we carried out the numerical simulation for the gas concentration of goaf and spontaneous combustion zone distribution of different cases of gas emission including uniform emission,subsection uniform emission and continuous emission condition.The results show that:when the gas emission is uniform,the gas concentration in the shallow part of the goaf is lower than that of subsection uniform emission and continuous emission,and the gas concentration in the deep part of the goaf is higher than that of the two other cases.In view of the two conditions of the gas uniform emission and continuous emission,the gas concentration of the two cases in the shallow area of the goaf is not large,but,in the deep part of the goaf,the gas concentration that of the former is greater than that of the latter.When the gas emission is uniform,the width of spontaneous combustion zone is smaller than of the two other cases,but when the gas emission is subsection uniform,the width of spontaneous combustion zone is slightly larger than that of the continuous gas emission.So in the study of the flow field in the goaf,it is not accurate to consider the gas emission as uniform and subsection uniform,we should be study it based on the actual characteristics of gas emission.关键词
Fluent软件/数值模拟/瓦斯涌出/采空区瓦斯浓度/自燃带Key words
Fluent software/numerical simulation/gas emission/gas concentration of goaf/spontaneous combustion zone分类
矿业与冶金引用本文复制引用
王春霞,艾德春,杨付领..采空区瓦斯涌出情况对瓦斯浓度及自燃带分布的影响[J].煤矿安全,2017,48(11):163-166,4.基金项目
采矿工程省级特色重点学科资助项目(黔学位合字ZDXK[2015]9号) （黔学位合字ZDXK[2015]9号）
贵州省科学技术联合基金资助项目(黔科合J字LKLS [2013]16号) （黔科合J字LKLS [2013]16号）
贵州省矿山压力与岩层控制工程中心资助项目(黔教合KY字[2012]027号) （黔教合KY字[2012]027号）
