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回采工作面瓦斯分布及传感器部署 被引量:8

Methane Distribution and Methane Sensor Deployment in Robbing Working Surface
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摘要 为了给回采工作面上瓦斯传感器的安放提供理论依据,用Fluent软件仿真了巷道瓦斯浓度分布。建立了回采工作面巷道几何模型,并对其进行网格划分,根据湍流状态下的守恒方程以及湍流动能方程和湍流耗散率方程,采用RNG k-ε模型,用Fluent软件仿真了井下进风港、回采工作面及回风巷瓦斯的分布情况。仿真结果表明:瓦斯在上隅角容易形成积聚;风流在冲洗回采工作面后进入回风巷的拐弯处时候,风速不稳定;传感器部署在拐弯处内侧和外侧的监测效果是不同的。瓦斯传感器应放置在距回采工作面的距离小于或等于10m的位置,该结论与煤矿安全标准中的规定吻合。 To provide theory base of methane sensor placement in robbing working surface, Fluent software was used to simulate methane distribution. Geometry model was established and divided by grids. Methane distribution in intake, robbing working surface and outtake was simulated using RNG k-ε model by Fluent according to conversation equation in turbulent state, turbulent kinetic energy equation and turbulent dissipation rate equation. The results show that methane is likely to accumulate in the upper corner, when wind passes through the corner after washing robbing working surface, wind velocity is unstable, the performance of sensor placed in inner side of turning is different from that placed in outer side of turning. Distance of methane sensor to robbing working surface should be no more than 10m which accords with the regulation of mine safety regulations well.
作者 孙继平 唐亮 陈伟 张向阳 刘艳杰 SUN Ji-ping1, TANG Liang1, CHEN Wei1, ZHANG Xiang-yang2, LIU Yan-jie3(1. State Key Laboratory of Coal Resources and Safe Mining, China Univ. of Mining and Technology, Beijing 100083, China;2. Research Institute of Information Engineering, China Univ. of Mining and Technology (Beijing), Beijing 100083, China;3. Heilongjiang Univ. of Science and Technology, Haerbin 150090, China)
出处 《系统仿真学报》 EI CAS CSCD 北大核心 2008年第4期 823-825,840,共4页 Journal of System Simulation
基金 基金项目:电子信息产业发展基金重点项目(财政部,财建[2005]688号 信息产业部,信部运[2005]555号).
关键词 数值模拟 传感器 瓦斯分布 回采工作面 RNG k-ε模型 numerical simulation sensor methane distribution robbing working surface RNG k-ε model
作者简介 孙继早(1958-),男,山西省翼城县人,教授,博导,工学博士,研究方向为矿井监控和移动通信等; 唐亮(1982-),男,江苏宿迁人,博士生,研究方向为矿井监控与通信。
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