J型通风工作面采空区漏风与瓦斯浓度分布规律研究  

Study on air leakage and gas concentration distribution law in working face goaf with J type ventilation system

作　　者：高建良 孙望望[3] 

机构地区：[1]煤炭安全生产河南省协同创新中心,河南焦作454000 [2]河南省瓦斯地质与瓦斯治理重点实验室--省部共建国家重点实验室培育基地,河南焦作454000 [3]河南理工大学安全科学与工程学院,河南焦作454000

出　　处：《煤炭工程》2018年第1期132-136,共5页Coal Engineering

基　　金：河南省基础与前沿技术研究项目"煤与瓦斯复合灾害形成机理及防控"(142300413233)

摘　　要：为获得工作面不同供风量时工作面漏风及采空区瓦斯分布规律,为工作面瓦斯治理提供理论支持,利用Fluent数值模拟方法对王庄矿8103工作面在供风量分别为2198m^3/min、2350m^3/min、2500m^3/min、2650m^3/min下采空区漏风及瓦斯浓度分布特征进行模拟与分析,得到了沿工作面全程的漏风分布及采空区瓦斯分布。分析结果表明:随着工作面供风量增加,工作面向采空区的漏风量逐渐增加;采空区内瓦斯浓度逐渐降低;上隅角瓦斯浓度不断降低,并且当工作面风量提高到2350m^3/min时,上隅角瓦斯浓度降低到1%以下。In order to obtain the air leakage of working face and the gas distribution law of goaf,and provide theoretical support for gas control of working face,the distribution characteristics of air leakage and gas concentration in the goaf of Wangzhuang 8103 working face under the conditions of 2198 m^3/min,2350 m^3/min,250 m^3/min and 2650 m^3/min air supply were simulated by FLUENT numerical simulation,and the goaf air leakage and gas distribution along the working face were analyzed. The results show that with the increase of working face air supply,the amount of air leakage in working face gradually increased; the gas concentration in goaf decreased gradually; the gas concentration in upper corner decreased continuously; and when the working face air volume increased to 2350 m^3/min,gas concentration in the upper corner reduced below 1%.

关 键 词：J型通风 采空区 漏风 瓦斯浓度分布 数值模拟 

分 类 号：TD824.5[矿业工程—煤矿开采]