巷道围岩温度场有限体积法模拟计算及实验分析

发布时间：2018-05-13 21:07

本文选题：巷道 + 温度场　；参考：《煤炭学报》2017年12期

【摘要】：根据巷道围岩温度场的散热特点,基于能量守恒定律和傅里叶定律,建立巷道围岩非稳态温度场数学模型,利用有限体积计算方法编制解算程序并求解出巷道围岩温度场。建立巷道围岩温度场相似模拟实验平台,并利用实验结果对有限体积计算方法的模拟结果进行实验验证,对比后发现有限体积法计算结果同相似模拟实验结果吻合,两者得到的巷道围岩温度场时空曲线变化趋势一致,由此说明了应用该有限体积计算方法所建立数学模型和解算程序的正确性与科学性。利用计算模拟结果和相似模拟实验结果对恒定风流温度下巷道围岩温度场非稳态变化过程中的影响因素进行分析,得到了巷道围岩温度场的变化规律,并以实例分析了巷道围岩温度场的非稳态过程并计算出围岩散热量。
[Abstract]:According to the heat dissipation characteristics of surrounding rock temperature field of roadway, based on energy conservation law and Fourier law, the mathematical model of unsteady temperature field of roadway surrounding rock is established, and the calculation program is compiled by using finite volume calculation method and the surrounding rock temperature field of roadway is solved. The simulation platform of temperature field of surrounding rock of roadway is established, and the simulation results of finite volume calculation method are verified by experiment results. The results of finite volume method are in good agreement with the results of similar simulation experiments. The temporal and spatial curves of surrounding rock temperature field obtained by the two methods are consistent with each other, which shows the correctness and scientificalness of the mathematical model and program established by the finite volume calculation method. The influence factors of the unsteady change of surrounding rock temperature field of roadway under constant air flow temperature are analyzed by using the simulation results of calculation and similar simulation experiment results, and the variation law of surrounding rock temperature field of roadway is obtained. An example is given to analyze the unsteady process of surrounding rock temperature field and to calculate the heat dissipation of surrounding rock.
【作者单位】：中国矿业大学(北京)资源与安全工程学院;
【基金】：国家自然科学基金资助项目(51574249)
【分类号】：TD727.2

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