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为研究围岩对风流温度的影响,分析了围岩调热圈形成的各时期及影响调热圈的因素,利用FLUENT对干燥巷道风流受围岩传热的影响进行模拟.研究结果表明:巷道内风流速度相对较小时,围岩对风流温度的影响就相对明显;随着风流距离入风端距离的增加,风流温度的变化与巷道围岩调热圈半径变化相关;风流温度在变化过程中分为3个阶段:初期阶段,缓步阶段与稳定阶段;在巷道风流温度变化的各阶段中初期阶段所占长度比例为77.2%,缓步阶段所占长度比例为11.55%,稳定阶段所占长度比例为11.25%.
In order to study the influence of surrounding rock on the temperature of wind flow, the factors that affect the formation of heat transfer circle and the factors that affect the heat transfer circle were analyzed. The FLUENT was used to simulate the influence of wind flow on the heat transfer of surrounding rock. Relatively small internal wind velocity, the impact of surrounding rock on the wind temperature is relatively obvious; with the wind distance from the inlet end of the distance increases, the change of wind temperature is related to the radius of the radius of the surrounding rock tunnel heat transfer; wind temperature changes in the process It is divided into three stages: the initial stage, the slow stage and the stable stage. The proportion of the length of the early stage in the phase of the temperature change of the air flow in the roadway is 77.2%, and the proportion of the length of the slow step is 11.55% The length ratio is 11.25%.