地铁车站热环境状态与隧道围岩传热的研究

发布时间：2019-03-30 20:09

【摘要】：摘要：地铁系统目前已成为一种广泛应用的交通系统,地铁站内部的环境问题也日益突出。而地铁站环境控制系统是地铁系统中调节内部环境空气质量、提高舒适度、保证安全运营必不可少的组成部分。因此,对地铁内部环境及其控制系统的研究将成为目前与今后很长一段时期内的一个重要课题。本论文以“北京地铁内部环境质量监测分析与预报控制应用研究”为背景,以复兴门站为主要研究对象,采用现场实际观测、理论分析与数值模拟相结合的方法进行研究。主要研究地铁站内部的热环境和区间隧道温度场。本文首先介绍了地铁内部热环境和区间隧道温度场的分布规律,讨论了分析的原理和方法,并根据实际流场情况,利用质量守恒方程、动量守恒方程、能量守恒方程,k-ε方程,建立起地铁内空气流动与传热的数学模型：然后在现场进行了必要测试,通过对所测数据的处理,获得了进行数值模拟计算所需的边界条件以及检验模拟结果是否正确的实测数据；再使用计算流体力学(CFD)软件PHOENICS建立其物理模型,输入适当的边界条件,得到地铁站内部热分布的规律。同时利用Ansys模拟出区间隧道的温度场,得到相应的规律。本论文的创新点在于：1)通过数值模拟定义了区间隧道围岩的最大蓄热量；2)通过数值模拟对区间隧道围岩的未来运营的温度场分布进行预测；3)对区间隧道围岩的产热规律进行探究；4)通过数值模拟加现场实测数据验证明确了地铁站内部的热分布规律；
[Abstract]:Abstract: subway system has become a widely used transportation system at present, and the environmental problems in subway station are becoming more and more prominent. The subway station environment control system is an essential part of the subway system to regulate the internal air quality, improve comfort, and ensure safe operation. Therefore, the study of subway internal environment and its control system will be an important topic for a long time now and in the future. In this paper, "Beijing Metro Internal Environmental quality Monitoring, Analysis and Forecast Control Application Research" as the background, Fuxingmen Station as the main research object, using field observation, theoretical analysis and numerical simulation method to carry on the research. The thermal environment and temperature field of tunnel in subway station are studied in this paper. In this paper, the distribution law of the thermal environment and the temperature field in the tunnel is introduced, and the principle and method of the analysis are discussed. According to the actual flow field, the mass conservation equation, momentum conservation equation and energy conservation equation are used. K-蔚 equation, the mathematical model of air flow and heat transfer in subway is established. Then the necessary tests are carried out in the field, and the measured data are processed. The boundary conditions required for numerical simulation calculation and the measured data to verify whether the simulation results are correct or not are obtained. Then the physical model is established by using the computational fluid dynamics (CFD) software PHOENICS and the proper boundary conditions are inputted to obtain the heat distribution law within the subway station. At the same time, the temperature field of interval tunnel is simulated by Ansys, and the corresponding law is obtained. The innovation of this paper is as follows: 1) the maximum heat storage of the surrounding rock of the interval tunnel is defined by numerical simulation; 2) the temperature field distribution of the surrounding rock of the interval tunnel is predicted by numerical simulation; 3) probe into the heat production law of surrounding rock of interval tunnel; 4) confirm the heat distribution law of subway station by numerical simulation and field measurement data;
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U231.4;U451.2

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