地铁隧道围岩热库逐年演化特性的实验研究
发布时间：2018-11-27 10:56
【摘要】：通过搭建缩尺模型实验台,分析了空气侧温度周期动态变化下地铁隧道新建到远期17a的隧道围岩土体热库变化。根据围岩土体温度场随时间分布特性,将其分为动态拓展期和动态稳定期。给出土体温度随深度逐年演化特性和热量蓄放特性,指出该实际地铁隧道模型中围岩土体热库厚度稳定在20m,热库峰值稳定在22.7℃,热库特征厚度稳定在2m。为后续解决远期运行区间隧道温升过高的问题提供参考。
[Abstract]:By setting up a scale model test bench, the thermal reservoir changes of surrounding rock mass of subway tunnel under the dynamic variation of temperature period in the air side are analyzed during the period of 17 years from the new construction of the subway tunnel to the future 17 years. According to the temperature distribution of surrounding rock and soil with time, it can be divided into dynamic extension period and dynamic stable period. The characteristics of soil temperature evolution with depth and heat storage are given. It is pointed out that the thermal reservoir thickness of surrounding rock is stable at 20 m, the peak value of heat reservoir is 22.7 鈩，
本文编号：2360495
[Abstract]:By setting up a scale model test bench, the thermal reservoir changes of surrounding rock mass of subway tunnel under the dynamic variation of temperature period in the air side are analyzed during the period of 17 years from the new construction of the subway tunnel to the future 17 years. According to the temperature distribution of surrounding rock and soil with time, it can be divided into dynamic extension period and dynamic stable period. The characteristics of soil temperature evolution with depth and heat storage are given. It is pointed out that the thermal reservoir thickness of surrounding rock is stable at 20 m, the peak value of heat reservoir is 22.7 鈩，
本文编号：2360495
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