气候变化领域集成服务门户(CCPortal): Numerical investigation on temperature-humidity field under mechanical ventilation in the construction period of hot-humid tunnel along the Sichuan-Tibet Railway

CCPortal

DOI	10.1016/j.undsp.2022.04.004
	Numerical investigation on temperature-humidity field under mechanical ventilation in the construction period of hot-humid tunnel along the Sichuan-Tibet Railway
	Zhao, Kaiming; Yuan, Yanping; Jiang, Fujian; Cao, Xiaoling
发表日期	2023
ISSN	2096-2754
EISSN	2467-9674
起始页码	123
结束页码	143
卷号	8
英文摘要	High temperature-humidity environment is one of the severe challenges in constructing Sichuan-Tibet railway tunnels. For enhancing construction efficiency and guaranteeing tunnel worker safety, addressing the high temperature-humidity environment has irreplaceable significance. This study innovatively investigated the distribution law and evolution process of the thermal-humidity coupling field dur -ing tunnel construction. Besides, the corresponding ventilation measures were proposed based on the evaluation heat index (HI). If the initial temperature of the surrounding rock is constant, the distance between the ventilation duct outlet and the tunnel working face should not be greater than 30 m. Otherwise, the cooling performance of ventilation will be significantly weakened; If this temperature ranges in 65-85 degrees C, the recommended ventilation velocity is 10-25 m/s, and the ventilation distance should not exceed 20 m. The con-clusions in this study are beneficial to better understand the high temperature-humidity environment in tunnel construction and can be a guideline for practical engineering application.
关键词	CFD simulation Heat and mass transfer Tunnel environment Tunnel ventilation
英文关键词	FLOW; ENVIRONMENT; MODEL
WOS研究方向	Engineering, Civil
WOS记录号	WOS:000892310000001
来源期刊	UNDERGROUND SPACE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283219
作者单位	Southwest Jiaotong University
推荐引用方式 GB/T 7714	Zhao, Kaiming,Yuan, Yanping,Jiang, Fujian,et al. Numerical investigation on temperature-humidity field under mechanical ventilation in the construction period of hot-humid tunnel along the Sichuan-Tibet Railway[J],2023,8.
APA	Zhao, Kaiming,Yuan, Yanping,Jiang, Fujian,&Cao, Xiaoling.(2023).Numerical investigation on temperature-humidity field under mechanical ventilation in the construction period of hot-humid tunnel along the Sichuan-Tibet Railway.UNDERGROUND SPACE,8.
MLA	Zhao, Kaiming,et al."Numerical investigation on temperature-humidity field under mechanical ventilation in the construction period of hot-humid tunnel along the Sichuan-Tibet Railway".UNDERGROUND SPACE 8(2023).