地铁联络通道冻结温度场三维数值分析

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英文篇名：Three Dimensional Numerical Analysis on Freezing Temperature Field in Subway Cross-Passage 作者：丁航 ; 李方政 ; 崔灏 英文作者：DING Hang;LI Fangzheng;CUI Hao;China Coal Research Institute;Beijing China Coal Mine Engineering Company Limited; 关键词：联络通道 ; 冻结法 ; 冻结温度场 ; 数值分析 英文关键词：subway cross-passage;;ground freezing method;;freezing temperature field;;numerical analysis 中文刊名：JJJS 英文刊名：Mine Construction Technology 机构：煤炭科学研究总院;北京中煤矿山工程有限公司; 出版日期：2018-02-25 出版单位：建井技术 年：2018 期：v.39;No.208 基金：国家自然科学基金面上项目(51774183);; 国家重点研发计划项目(2016YFC0600904) 语种：中文; 页：JJJS201801018 页数：5 CN：01 ISSN：11-2456/TD 分类号：15+59-62

摘要

冻结法现已广泛应用于市政地铁工程中。冻结温度场的发展是冻结法施工的关键,目前常将实际工程简化成二维平面模型,进行数值计算;但在实际工程中,冻结管常呈放射状分布,二维平面模型模拟不能直观准确地反映温度场发展规律。为此,综合考虑初始条件、边界条件以及相变潜热,建立三维温度场数学模型;并基于该模型,对郑州轨道交通1号线二期工程某区间联络通道三维温度场进行数值分析。结果显示,数值计算结果与实测值变化趋势基本一致,且数值较为接近,从而验证了三维数值计算的可行性。
        A ground freezing method is widely applied to the urban metro systems.The development of the freezing temperature field would be the key of the ground freezing construction.At present,an actual project would often be simplified to a two dimensional plane model for numerical calculation.But in the actual project,the freezing pipe would be distributed in radial and the simulation of the two dimensional plane model could not visually and accurately reflect the development law of the temperature field.Therefore in a comprehensive consideration on the initial condition,boundary condition and the latent heat of phase change,a mathematic model of the 3 Dtemperature field was established.Based on the model,a numerical analysis was conducted on the 3 Dtemperature field of the subway sectional cross-passage in second phase of No.1 Line,Zhengzhou Rail Transit.The results showed that the numerical calculation results were basically the same to the variation tendency of the site measured value,the numerical values were close to each other and the feasibility of the 3 Dnumerical calculation was verified.

引文

[1]李方政,夏明萍.基于指数积分函数的人工冻土温度场解析研究[J].东南大学学报(自然科学版),2004(4):469-473.
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