摘要
为解决小峪煤矿5#煤层开采上隅角瓦斯超限问题,利用ANSYS中的Fluent模块建立8204工作面瓦斯流动物理模型,通过RNGk-ε模型并利用有限元法求解N-S方程,数值模拟研究了顶抽巷水平内错距和垂高两层位布置参数对工作面上隅角瓦斯质量分数的影响.研究结果表明:随着水平内错距离的增大,工作面上隅角瓦斯质量分数先减小再升高,确定了顶抽巷布置的最好层位是水平内错15m,距离底板垂直高度11.45m.小峪煤矿8204工作面应用结果表明,顶抽巷有效的解决了小峪矿深部区工作面上隅角瓦斯超限问题.
In order to solve the gas overrun problem in mining the upper corner of 5# coal seam in Xiaoyu coal mine, a physical model of gas flow in the 8204 working face was established by using the fluent module in ANYSYS. The N-S equation was solved by using RNG k-ε model and finite element method. Numerical simulation was carried out to study the influence of horizontal inner distance and vertical layout parameters on contours of mass fraction in upper corner of working face. The numerical results show that with the increase of the horizontal error, the gas concentration in the upper corner of the working face decreases first and then increases. It is determined that the best level of the top pumping roadway layout is the horizontal distance of 15 m and the vertical height of 11.45 m from the bottom plate. The application results of the 8204 working face in Xiaoyu coal mine show that the high pumping roadway effectively solves the gas overrun problem in the upper corner of the working face in the deep part of Xiaoyu mine.
作者
梁冰
陶永文
毕名娟
LIANG Bing;TAO Yongwen;BI Mingjuan(College of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China;Datong Coal Mine Group Shuozhou Coal and Electricity Limited company,Huairen 038300,China;College of Mining,Liaoning Technical University,Fuxin 123000,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2018年第6期857-862,共6页
Journal of Liaoning Technical University (Natural Science)
基金
国家重点研发项目(2016YFC0801404)
国家重点研发项目(2016YFC0600704)
关键词
顶抽巷
层位优化
上隅角
水平内错距
质量分数
high pumping roadway
intervals optimization
upper corner
horizontal distance
mass fraction
