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为对周期性风流温度下的围岩温度场相似模拟的可行性进行研究,建立了周期性边界条件下的巷道围岩导热微分方程,引入无因次准数对导热微分方程进行了无因次化;然后根据方程分析法和量纲分析法,推导出周期性风温的巷道围岩温度场相似准则。并以某一矿井岩石巷道为例,设计了5组相似模拟实验方案,通过比较,选择几何相似比为20的相似模型。
In order to study the feasibility of similar simulation of surrounding rock temperature field at periodic wind flow temperature, the differential equations of thermal conductivity of surrounding rock under cyclic boundary conditions are established. By introducing dimensionless quasi- Then, based on the method of equation analysis and dimension analysis, the similarity criterion of the surrounding rock temperature field is derived. Taking a mine rock tunnel as an example, five similar simulation schemes are designed. By comparison, a similar model with geometric similarity of 20 is selected.