基于不同潮湿模型的矿井热环境数值模拟

Numerical Simulation of Mine Thermal Environment Based on Different Wet Models

考虑了均匀潮湿模型和局部潮湿模型,并对2种巷道潮湿模型内围岩温度的分布进行了数值模拟,对各种情况下的计算精度及在通风网络计算中的应用进行了探讨,并与实际矿井的部分巷道的实测结果进行了比较验证。结果表明,局部潮湿位置的巷道壁温度明显低于干燥部分巷道壁温度;均匀潮湿状态下的围岩内温度分布也不同于局部潮湿状态下的围岩温度分布;实际预测计算应用中可把当下每个巷道的起点温湿度作为风流温湿度计算的初始值。

The uniform wet surface model and the part of wet surface model were considered in this paper,and numerical simulation of the distribution of surrounding rock temperature in the two wet tunnel models was carried out. Furthermore,the paper discussed calculation accuracy of various circumstances and application in the ventilation network calculation,according to the simplified calculation model,and compared with the test result in the actual part of the mine roadway. The results showed that the part of wet tunnel wall temperature was significantly lower than the drying section of roadway wall temperature; the temperature distribution of surrounding rock between uniform wet surface and part of wet surface was significantly different; the initial temperature and humidity of roadway can be used as the initial value to calculate the distribution of temperature and humidity respectively in the actual prediction.