基于三维数值计算的U形和Y形通风瓦斯运移规律研究  

Research on U shape and Y shape ventilation system gas distribution rules based on three-dimensional simulation

作　　者：冯彬 汤绍泉 周爱桃[3,4] 臧杰[3] 

机构地区：[1]同煤同发东周窑煤业有限公司,山西大同037000 [2]中煤平朔煤业有限责任公司,山西朔州037601 [3]中国矿业大学(北京)资源与安全学院,北京100083 [4]河南理工大学安全学院,河南焦作454003

出　　处：《矿业工程研究》2011年第1期25-30,共6页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(50874111);国家高技术研究发展计划(863计划)重点资助项目(2009AA063201);教育部新世纪优秀人才支持计划资助项目(NCET-10-0724);教育部留学回国人员科研启动基金资助项目

摘　　要：U形通风和Y形通风是目前工作常用的2种通风方式,采用这2种通风方式后,采空区的瓦斯运移规律存在很大差别.由于现场无法直接测定采空区内的瓦斯浓度及其流场分布规律,而理论研究方面的数字模拟计算采用的二维模型忽略了与开采平面垂直方向上的瓦斯浓度分别,论文通过建立三维采空区物理模型,应用fluent软件模拟这两种通风方式采空区瓦斯运移规律,得出通风采场瓦斯运移及浓度分布的三维模拟结果.将Y型通风采场瓦斯运移及浓度分布计算结果与U形通风采场的计算结果进行比较分析,得出:Y形通风能更好地治理上隅角瓦斯.U shape and Y shape ventilation system are two usual ventilation systems in working face,and there are significant differences for gas distribution rule in goaf.Due to the impossibility of studying the gas distribution rule in goaf directly,and the two-dimensional model used in theoretical analysis and numerical simulation overlooked the differences of gas concentration distribution in the vertical plane of mining face,in this paper,three-dimensional model was established for goaf,and gas distribution rule with the two ventilation ways in goaf was simulated by fluent software,and the three-dimensional simulation results of gas migration and distribution of the two types of ventilation system were obtained.The results show that Y shape ventilation system can better prevent upper corner gas in working face.

关 键 词：三维模型 数值计算 采空区 瓦斯分布 

分 类 号：TD712.6[矿业工程—矿井通风与安全]