纵向通风与侧壁开口竖井自然排烟协同作用下烟气运动模拟

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (1): 48-52.

纵向通风与侧壁开口竖井自然排烟协同作用下烟气运动模拟

陈福斌1，李智胜2，蒋浩锴2，张玉春2

（1.深圳市交通公用设施建设中心，广东深圳 518000；2.西南交通大学地球科学与环境工程学院，四川成都 610031）

出版日期:2022-01-15 发布日期:2022-01-15
作者简介:陈福斌(1979-)，男，深圳市交通公用设施建设中心副主任，硕士，主要从事隧道火灾防治及路桥项目管理工作，广东省深圳市福田区紫竹七道16号，518000。

Simulation on the smoke movement under the synergistic effect of longitudinal ventilation and natural smoke exhaust of sidewall opening shaft

CHEN Fu-bin1, LI Zhi-sheng2, JIANG Hao-kai2, ZHANG Yu-chun2

（1. Shenzhen Transportation Public Facilities Construction Center, Guangdong Shenzhen 518000, China; 2. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Sichuan Chengdu 610031, China）

Online:2022-01-15 Published:2022-01-15

摘要/Abstract

关键词: 山岭隧道；纵向通风；烟气运移；数值模拟

Abstract: In order to explore the characteristics of fire smoke transport in mountain tunnel, two typical fire source powers (20 MW and 50 MW) were selected by numerical simulation method to analyze the influence of fire source position on temperature distribution under tunnel roof, smoke transport rate and mass flow rate in shaft smoke under different longitudinal wind speeds. The results show that when the longitudinal wind speed is lower than 3 m/s, the temperature along the path of the upstream of the fire source decreases gradually with the increase of the longitudinal wind speed, while the temperature along the path of the downstream of the fire source shows an opposite trend with the increase of the longitudinal wind speed. When the fire source is near the shaft, the smoke spreading speed in the upstream and inside the shaft is higher than that in the far end of the shaft. When the fire source was far away from the shaft, the mass flow of smoke in the shaft reached the peak value of about 2 m/s with the longitudinal ventilation, while when the fire source was close to the shaft, the mass flow of smoke in the shaft reached a higher level when the longitudinal wind speed was low.

Key words: mountain tunnel; longitudinal ventilation; smoke movement; numerical simulation

陈福斌1，李智胜2，蒋浩锴2，张玉春2. 纵向通风与侧壁开口竖井自然排烟协同作用下烟气运动模拟[J]. 消防科学与技术, 2022, 41(1): 48-52.

CHEN Fu-bin1, LI Zhi-sheng2, JIANG Hao-kai2, ZHANG Yu-chun2. Simulation on the smoke movement under the synergistic effect of longitudinal ventilation and natural smoke exhaust of sidewall opening shaft[J]. Fire Science and Technology, 2022, 41(1): 48-52.