Numerical Simulation of Gas Distribution in Blind Roadway after Gas Abnormal Emission
Gas abnormal emission in blind drift is one of main reason of gas explosion in coal mine. Gas distribution changes with time and place are simulated using CFD software. The result shows that, in blind roadway with ventilation, gas concentration in the upper roadway is higher than that of lower tunnel during gas abnormal emission. The gas concentration reduces first, then rises, and then reduces again. A few minute after emission, the distance of reduce is very short. Gas concentration increased dramatically along the tunnel. The study is significant for the coal and gas outburst and also useful for accident investigation, personal protection in the mine, disaster warning and emergency response guidance.
numerical simulation abnormal emission gas concentration blind roadway
YANG Chun-li LIU Qi YANG Chun-yan
School of Energy and Environment Engineering, Zhongyuan University of Technology, Zhengzhou 450007, Mechanical and Electrical Engineering Institute, Zhengzhou University of Light Industry, Zhengzhou 4
国际会议
The 2nd International Conference on Mine Safety and Environment Protection(第二届采矿、安全与环境保护国际会议)
西安
英文
199-204
2011-10-10（万方平台首次上网日期，不代表论文的发表时间）