摘要
在长大隧道射流巷道式施工通风系统中,常常由于横通道漏风导致通风系统出现混乱,其实质为横通道两端压力差导致新风短路或污风循环现象。结合米仓山隧道通风实例,对通风网络进行一维简化,并基于风压理论对射流风机不同的布设方式和位置进行分析,以期达到优化隧道整体和局部通风效果的目的。结果表明,在实际施工中:(1)施工车辆由最前方横通道通行,其余横通道均应封闭,出现漏风的横通道应及时修补;(2)将射流风机均匀布置在整个通风路径上,能够大幅度减少风流短路的情况;(3)结合风压曲线调整射流风机位置,还可以进行横通道附近局部通风优化,使其两端压力差大幅减小甚至消失。
During the construction of the long twin-tunnel,the recirculation ventilation system with jet fans is often out of order due to the air leakage of cross-aisles,which would lead to short circuit of fresh air and polluted wind cycle because of the pressure difference between the two ends. In this paper,the ventilation networks of Micangshan tunnel are simplified in one-dimension,and different layouts and locations of the jet fans are analyzed based on pressure theory so as to optimize the whole tunnel and local ventilation. The results show that in actual construction：（1） the construction vehicles shall be passed by the foremost cross-aisle and the rest of the cross-aisles shall be closed,and cross-aisles with air leakage shall be promptly repaired;（2） arranging the jet fans uniformly over the entire ventilation path can greatly reduce the short circuit of air;（3） combining with the wind pressure curves to adjust the positions of the jet fans can optimize local ventilation,which significantly reduces or even eliminates cross-aisle pressure difference.
作者
黄磊
雷帅
张睿
江俊杰
HUANG Lei;LEI Shuai;ZHANG Rui;JIANG Jun-jie(School of CMI Engineering,Southwest Jiaotong University,Chengdu 610031,China;Sichuan Chuan Jiao Road ＆ Bridge Co.,Ltd.,Guanghan 618300,China)
出处
《铁道标准设计》
北大核心
2018年第9期130-134,共5页
Railway Standard Design
关键词
隧道
巷道式通风
风压分析
射流风机
横通道
优化
Tunnel
Reeireulation ventilation
Pressure analysis
Jet tan
Cross-aisle
Optimization
作者简介
黄磊（1993-），男，四川德阳人，硕士研究生，主要从事隧道通风方面的研究，E—mail：657792413@qq．com。
