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Heat Exhaust Ventilation for Ultra long GIL Tunnel(超长GIL管廊排热通风研究)
引用本文:ZHANG Zhengwei,MIN Xuan,DAI Min,ZHAO Libo, CHOWDHURY Amina,SAEED Tariq.Heat Exhaust Ventilation for Ultra long GIL Tunnel(超长GIL管廊排热通风研究)[J].隧道建设,2019,39(4):584-593.
作者姓名:ZHANG Zhengwei  MIN Xuan  DAI Min  ZHAO Libo   CHOWDHURY Amina  SAEED Tariq
作者单位:(1. Arup International Consultants (Shanghai) Co., Ltd., Shanghai 200031, China; 2. China Electric Power Research Institute Co., Ltd., Wuhan 430074, Hubei, China; 3. Central Southern China Electric Power Design Institute Co., Ltd., Wuhan 430000, Hubei, China; 4. Ove Arup & Partners International Ltd., London B908AE, UK)
摘    要:The GIL chamber in the utility tunnel under Tanxinpei Road in Wuhan is an ultra long 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 one dimensional model for the GIL chamber is established by using the IDA tunnel simulation software to analyze the short term and long term heat exhaust, respectively. The short term heat exhaust is analyzed for the typical climate of summer/winter/transitional seasons and the long term analysis is carried out under the seasonal changes in 1 year/ 10 years/ 30 years. The short term analysis results indicate that the slope of the utility tunnel and the temperature gradient lead to lower ventilation efficiency in certain areas. The long term 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 three dimensional model of the GIL chamber is established using the fluid mechanics based 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 non uniformity 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.

关 键 词:utility  tunnel  heat  exhaust  ventilation  short  term  analysis  long  term  analysis  capacity  of  heat  transmission  by  wall  OpenFOAM  
收稿时间:2018-11-01
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