基于Comsol Multiphysics的巷道分岔口漏风数值模拟

Numerical Simulation of Wind Leakage of Roadways Based on Comsol Multiphysics

巷道分岔口是最容易产生自然发火的地点之一。结合太平煤矿巷道分岔口自然发火的特点,构筑了两巷夹角自然发火的物理模型,利用Comsol Multiphysics软件进行了漏风数值模拟,结果表明:当两条巷道长度基本相等时,下风侧的发火几率大于上风侧;当两条巷道长度不等时,短边自然发火的几率大于长边。太平煤矿两巷夹角处自然发火的实例证明了上述结论的正确性。

It is one of the easiest places to get angry. Combining with the characteristics of roadway fork in taiping coal mine spontaneous combustion,constructed the two lane Angle of the physical model of spontaneous combustion,by using Comsol Multiphysics software has carried on the numerical simulation of air leakage,the results show that: when two basic equal length of roadway,the ignition probability is greater than the upper side of the lee side; When the length of the two roadways is different,the probability of short side natural fire is greater than that of long side. The validity of the above conclusions is proved by an example of spontaneous ignition at the Angle of the two lanes of taiping coal mine.