论文标题
热平衡模型，用于长期预测地铁隧道和周围土壤的热状态
Heat balance model for long-term prediction of the thermal regime of a subway tunnel and surrounding soil
论文作者
论文摘要
为了长期预测地铁隧道和周围土壤中的平均空气温度，在一个系统中建模了热平衡状况，其中包括两个平行的隧道，一个接近刺的地下空间，地球表面和具有季节性温度变化的大气空气。假定隧道中的空气充分混合，并且通过用大气空气代替隧道中的空气来考虑通风的热效应。热平衡方程系统通过有限元方法数字求解。对模型参数对隧道和周围土壤平均温度的影响进行数值分析。估计隧道之间的温度升高的土壤区域的尺寸。
For a long-term forecast of the average air temperature in a metro tunnel and surrounding soil, heat balance conditions are modeled in a system that includes two parallel tunnels, a near-tunnels underground space, the earth's surface and atmospheric air with seasonal temperature variation. It is assumed that the air in the tunnels is well mixed, and the thermal effect of ventilation is taken into account by replacing the air in the tunnels with atmospheric air. The system of heat balance equations is solved numerically by the finite element method. A numerical analysis of the influences of the model parameters on the average temperature in the tunnels and surrounding soil is carried out. The dimensions of the soil region with an elevated temperature, located between the tunnels, are estimated.
