A hybrid ventilation scheme applied to bidirectional excavation tunnel construction with a long inclined shaft

作     者：YANG Wei-chao WANG Jian DENG E LIU Yi-kang LUO Lu-sen YANG Jia 杨伟超;王剑;邓号;刘义康;罗禄森;杨佳

作者机构：School of Civil EngineeringCentral South UniversityChangsha 410075China National Engineering Research Center of High-speed Railway Construction TechnologyCentral South UniversityChangsha 410075China National Rail Transit Electrification and Automation Engineering Technology Research CenterHung HomKowloonHong Kong 999077China Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHung HomHong Kong 999077China The Hong Kong Polytechnic University Shenzhen Research InstituteShenzhen 518172China China Railway Eryuan Engineering Group Co.Ltd.Chengdu 610031China 

基　　金：Project(N2022G031)supported by the Science and Technology Research and Development Program Project of China Railway Projects(2022-Key-23,2021-Special-01A)supported by the Science and Technology Research and Development Program Project of China Railway Group Limited Project(52308419)supported by the National Natural Science Foundation of China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2024年第31卷第9期

页      码：3187-3205页

摘      要：The breakage and bending of ducts result in a difficulty to cope with ventilation issues in bidirectional excavation tunnels with a long inclined shaft using a single ventilation method based on *** discuss the hybrid ventilation system applied in bidirectional excavation tunnels with a long inclined shaft,this study has established a full-scale computational fluid dynamics model based on field tests,the Poly-Hexcore method,and the sliding mesh *** distribution of wind speed,temperature field,and CO in the tunnel are taken as indices to compare the ventilation efficiency of three ventilation systems(duct,duct-ventilation shaft,duct–ventilated shaft-axial fan).The results show that the hybrid ventilation scheme based on duct-ventilation shaft–axial fan performs the best among the three ventilation *** to the duct,the wind speed and cooling rate in the tunnel are enhanced by 7.5%–30.6%and 14.1%–17.7%,respectively,for the duct-vent shaft-axial fan condition,and the volume fractions of CO are reduced by 26.9%–73.9%.This contributes to the effective design of combined ventilation for bidirectional excavation tunnels with an inclined shaft,ultimately improving the air quality within the tunnel.

主 题 词：bidirectional excavation tunnel inclined shaft hybrid ventilation scheme computational fluid dynamics ventilation efficiency 

学科分类：081406[081406] 08[工学] 0814[工学-地质类] 082301[082301] 0823[工学-农业工程类] 

核心收录：

D　O　I：10.1007/s11771-024-5732-2

馆 藏 号：203134656...