深埋巷道围岩温度场的数值模拟分析

Numerical Simulation Analysis of Temperature Field in Surrounding Rock of Deeply Buried Roadways

为了研究深埋巷道围岩温度场的分布规律,基于传热学和渗流理论建立了深埋巷道围岩的热扩散数学模型,结合边界条件采用MATLAB对其进行了数值求解,获得了在风流和渗流耦合作用下围岩的温度场和温度矢量分布。研究结果表明,无渗流状态下温度场和温度矢量呈对称分布,风流速度对温度分布有明显的影响,但不改变其对称分布的状态。渗流改变了温度场和温度矢量原有的对称分布的状态,热交换平衡区随着渗流速度的增加,将向顺渗流的方向移动。

In order to study the distribution rule of temperature field in surrounding rock of roadways, the mathematical model of thermal diffusivity is setup based on heat transfer and 1 deeply buried eakage theory. Combined with boundary condition, the distribution of temperature field and temperature vector of surrounding rock under coupling airflow and leakage is obtained by using MATLAB. The results show that the distribution of temperature field and temperature vector is symmetrical under the condition of without leakage. Airflow speed obviously affects temperature distribution, but it doesn＇t change the symmetric of temperature field. Leakage changes original symmetric of temperature field and temperature vector, at the same time, the balance area of heat exchange will move following leakage.