摘要
随着我国煤矿开采深度的延伸,瓦斯问题显得十分严峻,尤其上隅角瓦斯超限现象普遍存在,是影响矿井持续、稳定、安全及高效生产的重要制约因素。为探讨上隅角瓦斯聚积的原因,根据流体力学中的渗流理论,通过建立采空区瓦斯渗流和分布数学模型的数值模拟,对采空区瓦斯流动分布规律进行研究,为分析上隅角瓦斯浓度分布及预测其浓度提供理论依据,对上隅角瓦斯治理具有重要的指导意义。
Gas problem seems quite serious with the extension of mining depth of coal in China, es- pecially the widespread of the upper corner gas exceeds the limit, which is a key restraining factor to pro- duction of last, stable, safe and efficient of mine. To discuss the basic reason of upper corner gas accu- mulation, theoretical analysis was done on gas migration law in goal according to percolation theory in hydromechanics. Through the numerical simulation was done on established mathematical model of seep- age and distribution of gas of goal, flow distribution of gas of goaf was analyzed It provides theoretical foundation for upper comer gas concentration distribution analysis and the concentration prediction, which has important guiding role for control of upper corner gas.
出处
《现代矿业》
CAS
2013年第1期55-57,63,共4页
Modern Mining
关键词
采空区
瓦斯运移
上隅角
渗流理论
数值模拟
Goaf, Gas migration, Upper corner, Percolation theory, Numerical simulation
