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针对巷道围岩与风流热传递的问题,首先阐述了巷道围岩调热圈及其对热环境的影响,在此基础上,采用数值模拟的方法,提出了两种数值模拟方案,探讨了巷道调热圈中围岩与风流之间在温度方面相互影响的规律。结果表明:距离巷道壁面越近,围岩温度变化率越大,壁面处变化率为最大,延伸至岩体深部过程中变化趋势逐渐减弱为零;风温周期性变化条件下,巷道围岩与风流的传热过程也呈现周期性变化趋势,最终将形成一种周期性传热稳态;围岩温度波动比风流温度波动存在明显的滞后;在不采取任何降温措施的条件下,风流在全过程中的传热表现为吸热,调热圈表现为放热。
Aiming at the problem of roadway surrounding rock and the convection heat transfer, firstly, the heat transfer circle around the roadway and its influence on thermal environment are expounded. Based on this, two numerical simulation schemes are proposed by numerical simulation, Adjusting the law of the mutual influence between temperature and surrounding rock in the heat circle. The results show that the closer the wall to the roadway, the larger the rate of change of surrounding rock temperature is, and the change rate of wall rock is the largest, while the change trend of rock mass gradually decreases to zero when the rock mass extends to the deep part of rock mass. The heat transfer process of the wind flow also shows a cyclical trend and eventually forms a periodic steady state of heat transfer. The fluctuating temperature of the surrounding rock lags behind that of the wind flow temperature obviously. Under the condition of not taking any cooling measures, Heat transfer performance in the process for endothermic, heat transfer coil performance for the heat.