隧道围岩温度分析解在高黎贡山铁路隧道的应用——隧道内空气温度满足设计要求时的围岩温度分布规律

罗占夫; 蒋涛; 王树刚; 蒋爽; 王卓

doi:10.3973/j.issn.2096-4498.2020.S2.004

隧道建设 >

2020 , Vol. 40 >Issue S2: 32 - 37

DOI: https://doi.org/10.3973/j.issn.2096-4498.2020.S2.004

研究与探索

隧道围岩温度分析解在高黎贡山铁路隧道的应用——隧道内空气温度满足设计要求时的围岩温度分布规律

罗占夫 ,
蒋涛 ,
王树刚 ,
蒋爽 ,
王卓

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（1.中铁隧道勘察设计研究院有限公司,广东广州 511458;2.广东省隧道结构智能监控与维护企业重点实验室.广东广州 511458;3. 大连理工大学,辽宁大连 116024;4.大连民族大学，辽宁大连 116600）

罗占夫（1973—），男，河北河间人，1995年毕业于阜新矿业学院，矿山通风与安全专业，本科，教授级高级工程师，现从事隧道与地下工程设计与研究工作。E-mail： 34801107@qq.com。

网络出版日期: 2021-03-21

基金资助

中铁隧道局集团有限公司资助项目(隧研合2016－01)

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Application of Theoretical Solution of Surrounding Rock Temperature

in Gaoligongshan Railway Tunnel: Surrounding Rock Temperature Distribution Law under Design Air Temperature

LUO Zhanfu ,
JIANG Tao ,
WANG Shugang ,
JIANG Shuang ,
WANG Zhuo

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(1.China Railway Tunnel Consultants Co.,Ltd.,Guangzhou 511458,Guangdong,China;2.Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure,CRTG,Guangzhou 511458,Guangdong,China;3.Dalian University of Technology,Dalian 116024,Liaoning,China;4.Dalian Minzu University,Dalian 116600,Liaoning,China)

Online published: 2021-03-21

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摘要

针对深埋长大隧道施工中的作业面高温问题，依据隧道径向及轴向二维轴对称的围岩温度导热模型，引入第三类边界条件推导出围岩温度分布的分析解。以高黎贡山越岭段铁路隧道为例，对实际隧道洞内气温满足规范要求时的围岩温度分布进行预测分析，结果表明: 1)隧道截面径向最大温度梯度出现在内壁和围岩与衬砌的交界处，且径向围岩温度值随整个隧道轴向位置不同而变化，但只在隧道出入口两端20 m之内变化较为明显； 2)提高隧道内壁面的对流换热系数将使衬砌内的平均温度梯度增大，进而导致洞内降温负荷的增加。

关键词： 高地温; 隧道; 围岩温度; 分析解

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罗占夫 , 蒋涛 , 王树刚 , 蒋爽 , 王卓 .

隧道围岩温度分析解在高黎贡山铁路隧道的应用——隧道内空气温度满足设计要求时的围岩温度分布规律

[J]. 隧道建设, 2020 , 40(S2) : 32 -37 . DOI: 10.3973/j.issn.2096-4498.2020.S2.004

Abstract

The problems of high temperature on working surface always appear in deepburied long tunnels. Based on radial and axial twodimensional axisymmetric surrounding rock temperature heat conduction model of the tunnel, the third type of boundary conditions is introduced to derive the theoretical solution of surrounding rock temperature. Taking the mountainous section of Gaoligongshan railway tunnel as an example, the temperature distribution of surrounding rock is predicted and analyzed when the temperature inside the actual tunnel meets the requirement of specification. The results show that the radial maximum temperature gradient of tunnel section appears on the inner wall and the boundary between the surrounding rock and the lining. The radial surrounding rock temperature varies with the axial position of the entire tunnel, but it changes obviously only within about 20 meters at both ends of the entrance and exit. Increasing the convective heat transfer coefficient of the inner wall surface of the tunnel will increase the average temperature gradient in the lining, which will lead to an increase of cooling load.

Key words： high ground temperature; tunnel; surrounding rock temperature; theoretical solution

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