- CSCD核心中文核心科技核心
- RCCSE(A+)公路运输高质量期刊T1
- Ei CompendexScopusWJCI
- EBSCOPж(AJ)JST
隧道建设（中英文） ›› 2019, Vol. 39 ›› Issue (4): 584-593.DOI: 10.3973/j.issn.2096-4498.2019.04.008
ZHANG Zhengwei1, MIN Xuan2, DAI Min2, ZHAO Libo3, CHOWDHURY Amina4, SAEED Tariq4
张正维1， 闵绚2， 戴敏2， 赵丽博3， CHOWDHURY Amina4， SAEED Tariq4
摘要：
The GIL chamber in the utility tunnel under Tanxinpei Road in Wuhan is an ultralong closed structure. Heat exhaust ventilation is the controlling problem in engineering design for the project, especially the heat transfer between the tunnel and the surrounding soil in the long term. A onedimensional model for the GIL chamber is established by using the IDA tunnel simulation software to analyze the shortterm and longterm heat exhaust, respectively. The shortterm heat exhaust is analyzed for the typical climate of summer/winter/transitional seasons and the longterm analysis is carried out under the seasonal changes in 1 year/ 10 years/ 30 years. The shortterm analysis results indicate that the slope of the utility tunnel and the temperature gradient lead to lower ventilation efficiency in certain areas. The longterm analysis results show that the air temperature in the GIL chamber and the wall temperature rise most pronouncedly during the first 5-6 years of operation and remain stable for the remaining time within 30 years. It also is found that around 10%-40% of the heat is released to the surrounding soil. A threedimensional model of the GIL chamber is established using the fluid mechanicsbased program, OpenFOAM, for 3D simulation. The effects of cables and brackets on the temperature and velocity fields in the chamber are analyzed. The effect of nonuniformity of velocity distribution and the stack effect on the temperature distribution in the GIL chamber are revealed. The results can provide some reference for the design and specification revision of heat exhaust ventilation for similar utility tunnels in the future.
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