西安科技大学学报2011，Vol.31Issue(6)：728-730,744,4.
独头巷道内瓦斯运移规律数值模拟
Numerical simulation of gas migration law in blind roadway
杨春丽 1刘琦 1杨春燕2
作者信息
- 1. 中原工学院能源与环境工程学院,河南郑州 450007
- 2. 郑州轻工业学院机电工程学院,河南郑州 450007
- 折叠
摘要
Abstract
Gas abnormal emission in blind roadway is one of main reason of gas explosion in coal mine. Gas distribution changes with time and place is simulated using CFD software, and the power exponent is used to simulate outburst velocity, and air quantity is the same as normal air quantity. Gas concentration variation along middle roadway of different point and gas concentration contour of different time are monitored during simulation. 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 roadway. The study is significant to investigate the cause of the gas accident, personal protection, disaster warning and e-mergency response guidance.关键词
数值模拟/异常涌出/瓦斯浓度/独头巷道Key words
numerical simulation/ abnormal emission/ gas concentration/ blind roadway分类
矿业与冶金引用本文复制引用
杨春丽,刘琦,杨春燕..独头巷道内瓦斯运移规律数值模拟[J].西安科技大学学报,2011,31(6):728-730,744,4.
