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《Journal of System Simulation》 2008-04
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Methane Distribution and Methane Sensor Deployment in Robbing Working Surface

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)  
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.
【Fund】: 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)
【CateGory Index】: TD712
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