地铁区间隧道温度的预测模型研究

夏季过高的隧道温度会导致列车空调高压保护停机,因此地铁隧道的最高温度是关乎列车运行安全的重要因素。采用模拟方法,着重研究与隧道内部发热量相关的3个因素:乘客人数、车厢质量和列车制动回收系数;以及与土壤导热相关的2个因素:土壤导热系数和热容。通过多组正交实验,建立了基于以上5个因素的响应面曲线模型。此模型可提供对隧道最热月日最高温度均值的快速预测方法,从而在研究或设计中避免复杂费时的模拟工作。

Predicting-Model for Interval Tunnel Temperature in Subway

The overheating situation in summer results in high-pressure failure in subway trains; therefore, the highest tunnel temperature is an essential factor for safe operation. In this study, the simulation method was adopted for factor analysis. The three influencing factors concerning internal heat generation (passenger number, carriage weight, and regenerative braking system (RBS) efficiency) and two factors concerning transmission load (soil conductivity and thermal capacity) were analyzed. Based on a series of orthogonal experiments, a response surface model (RSM) of the subway tunnel temperature was established. This model provides a quick way of predicting subway tunnel temperature in different situations, which could be helpful in the design and operation stages of a subway without complex and time-consuming simulations.