基于通风网络理论的采空区自燃过程数值模拟

Numerical Simulation of Spontaneous Combustion Process in Goaf Based on Ventilation Network Theory

把采空区多孔介质空间假想成由漏风通道组成的通风网络 ,各漏风分支的风阻则按采空区的实际特性给予赋值 ,然后采用通风网络理论、流体力学与传热学理论 ,对新集矿 130 7工作面采空区的简化模型进行了自燃过程的模拟。其模拟结果经实测与分析 ,证明是合理的。因此 ,采用该方法模拟采空区煤炭自燃过程是可行的 。

The porous medium of goal is assumed as a network made up of air leakage passages, and the resistance coefficient of these passages are valued as the actual goal character. Then by combining fluid mechanics and heat transfer theory with ventilation network theory, the simplified model of the goaf at no.1307 working face in Xinji coal mine is simulated. The simulated results are in compliance with the data obtained from locale, and are reasonable. So this new method is feasible and valuable in practical application.