摘要
为了研究临时密闭对小保当一号井112207工作面上隅角CO涌出的影响。根据采空区流场理论,结合112207工作面上隅角CO气体实测情况,采用数值模拟的方法,建立112207工作面采空区几何模型,研究工作面上隅角附近CO浓度场的分布规律。通过设置工作面上下隅角临时密闭,对比分析临时密闭前后工作面采空区CO浓度场的变化。结果表明,临时密闭对采空区上隅角CO涌出防控起到一定的作用。
In order to study the influence of temporary sealing on CO emission from upper corner of 112207 working face in Xiaobaodang No.1 mine.According to the flow field theory of goaf, combined with the measured situation of CO gas in the upper corner of 112207 working face, the geometric model of goaf of 112207 working face is established by numerical simulation, and the distribution law of CO concentration field near the upper corner of working face is studied.By setting the temporary sealing of the upper and lower corner of the working face, the changes of CO concentration field in the goaf of the working face before and after temporary sealing are compared and analyzed.The results show that temporary sealing plays a certain role in the prevention and control of CO emission from the upper corner of the goaf.
作者
刘超
陈真
杨彪
毛少军
张慧峰
杨程帆
LIU Chao;CHEN Zhen;YANG Biao;MAO Shaojun;ZHANG Huifeng;YANG Chengfan(Shaanxi Xiaobaodang Mining Co.,Ltd.,Yulin,719000,China;Shaanxi Shanmei Yubei Coal Industry Co.,Ltd.,Yulin 719000,China;College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)
出处
《陕西煤炭》
2023年第1期22-25,47,共5页
Shaanxi Coal
关键词
上隅角
CO防控
临时密闭
数值模拟
upper corner
CO prevention and control
temporary sealing
numerical simulation
