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为了预测采动影响下采场温度分布状态,建立了U型通风采场的温度场实验台以模拟采场中的热输运现象.基于采场内流场与温度场数学模型,提出了选取α2rxr/u2r=α3rd2nr/ur=xr/pfr和xr/urTr=1/qr作为模型的相似关系式,确定了模型中独立变量的合理取值,论证了为使温度场相同而应满足的热源项的比例关系.模拟U型通风采场的氧化带局部区域自热工况的实验结果表明:采场温度场分布趋势与数值模拟及现场实测结果吻合较好,均呈现由进风口到回风口先上升再下降的分布规律,并在采空区倾向中心线偏回风口20～30m处出现温度峰值,实验台能够合理再现实际采场的热交换过程.
In order to predict the temperature distribution of stope under the influence of mining, a temperature field experiment bench of U-shaped ventilation stope was established to simulate the heat transport in the stope. Based on the mathematical model of flow field and temperature field in stope, α2rxr / u2r = α3rd2nr / ur = xr / pfr and xr / urTr = 1 / qr as the similarity of the model to determine the reasonable value of independent variables in the model to demonstrate the same temperature field to meet the heat source term .The simulation results show that the trend of temperature distribution in stope is in good agreement with the numerical simulation and on-site test results, and the results show that both the air inlet and the return air outlet Rising and then falling. The temperature peak appears at 20-30 m of the centerline deviation gutter in the goaf, and the test bench can reasonably reproduce the heat exchange process in the actual stope.