瓦斯突出后断面积对逆流影响及爆炸数值模拟研究

首先通过理论分析可得知突出的强度、通风的压力、通风的阻力等因素都会对逆流长度的大小产生很大的影响。然后基于理论分析通过Fluent流体力学软件建立相应的数值模型,对井下巷道断面积变化和不同浓度的瓦斯爆炸进行数值模拟研究,通过研究模拟结果可以看出进风量的大小和回风巷道的大小给逆流长短带来影响的程度,以及瓦斯爆炸后的压力和温度变化。

Effects of Gas Outburst Cross Section on Counter- current and Study on the Numerical Simulation of Explosion

First theoretical analysis is conducted to study the influence factors on counter-current and the result shows that factors,such as the outstanding strength,ventilated pressure,ventilated resistance, can influence greatly the size of the counter-flow length.Based on the theoretical analysis,the corresponding numerical model is constructed by fluid mechanics software Fluent,to conduct numerical simulation studies on broken area change of underground tunnels and different explosion of gas concentration.The simulation can shows the effects of air volume and return air of roadway on the length of the upstream and pressure and temperature changes after gas explosion.