Home | About Journal  | Editorial Board  | Instruction | Subscription | Advertisement | Message Board  | Contact Us | 中文
MODERN TUNNELLING TECHNOLOGY 2019, Vol. 56 Issue (2) :194-200    DOI:
Current Issue | Next Issue | Archive | Adv Search << [an error occurred while processing this directive] | [an error occurred while processing this directive] >>
Research of Construction Ventilation Optimization for Huayingshan Tunnel on Nanchong-Dazu-Liangping Expressway
（1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031；2 Survey and Design Company of Sichuan Road &Bridge(Group) Co., Ltd., Chengdu 610015; 3 Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031; Sichuan Nanyu Expressway Co., Ltd., Nanchong 637000
Download: PDF (2765KB)   HTML (1KB)   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract Jet flow gallery ventilation is a common method of construction ventilation. In order to investigate the flow field and the distribution of pollutants of gallery ventilation, it established a three-dimensional numerical model with fluid dynamic software Fluent based on Huayingshan tunnel project, studied the ventilation flow field and the distribution of hazardous gases in condition of sulfureted hydrogen gushing when tunnel passes through mined-out area. The results show that air distribution of current ventilation mode is unreasonable and results in a low air velocity zone with high concentration of hazardous gases. This problem can be solved by increasing air supply volume at tunnel face and installing local ventilation fans. When air velocity reaches 26 m/s in air duct the low air velocity zone disappears completely. With local ventilation fans in front of the cross passage, the air velocity in tunnel can reach 2 m/s and the low air velocity zone can also be eliminated.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
LEI Shuai1
2 FANG Yong3 LIU Jing4 HUANG Lei1
2
Keywords： Highway tunnel   Gallery ventilation   Numerical simulation   Flow field   Hazardous gas   Optimization     
Abstract： Jet flow gallery ventilation is a common method of construction ventilation. In order to investigate the flow field and the distribution of pollutants of gallery ventilation, it established a three-dimensional numerical model with fluid dynamic software Fluent based on Huayingshan tunnel project, studied the ventilation flow field and the distribution of hazardous gases in condition of sulfureted hydrogen gushing when tunnel passes through mined-out area. The results show that air distribution of current ventilation mode is unreasonable and results in a low air velocity zone with high concentration of hazardous gases. This problem can be solved by increasing air supply volume at tunnel face and installing local ventilation fans. When air velocity reaches 26 m/s in air duct the low air velocity zone disappears completely. With local ventilation fans in front of the cross passage, the air velocity in tunnel can reach 2 m/s and the low air velocity zone can also be eliminated.
Keywords： Highway tunnel,   Gallery ventilation,   Numerical simulation,   Flow field,   Hazardous gas,   Optimization     
Cite this article:   
LEI Shuai1, 2 FANG Yong3 LIU Jing4 HUANG Lei1, 2 .Research of Construction Ventilation Optimization for Huayingshan Tunnel on Nanchong-Dazu-Liangping Expressway[J]  MODERN TUNNELLING TECHNOLOGY, 2019,V56(2): 194-200
URL:  
http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2019/V56/I2/194
　
No references of article
[1] LIU Feixiang1,2.SCDZ133 Intelligent Multi-function Trolley and Its Application in Tunnelling[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 1-7
[2] ZHOU Wenbo WU Huiming ZHAO Jun.On Driving Strategy of the Shield Machine with Atmospheric Cutterhead in Mudstone Strata[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 8-15
[3] CHEN Zhuoli1,2 ZHU Xunguo1,2 ZHAO Deshen1,2 WANG Yunping1,2.Research on Anchorage Mechanism of Yielding Support in the Deep-buried Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 16-22
[4] WANG Quansheng.Case Study Based Analysis of Segment Division Principles of Rectangular Shield Tunnels[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 23-29
[5] ZHANG Heng1 ZHU Yimo1 LIN Fang1 CHEN Shougen1 YANG Jiasong2.Study on Optimum Excavation Height of Middle Bench in an Underground Cavern Based on Q System Design[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 30-37
[6] LI Hao.Geological Survey on Breakthrough Section of the Large-section Karst Tunnel by Radio Wave Penetration Method[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 38-42
[7] CEN Peishan1 TIAN Kunyun2 WANG Ximin3.Study on Gas Hazard Assessment of Yangshan Tunnel on Inner MongoliaJiangxi Railway[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 43-49
[8] ZHU Jianfeng1 GONG Quanmei2.Centrifugal Model Test on Long-term Settlement of Shield Tunnels in Soft Soils[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 49-55
[9] CHEN Youzhou1 REN Tao2 DENG Peng2 WANG Bin3.Prediction of Tunnel Settlements by Optimized Wavelet Neural Network Based on ABC[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 56-61
[10] WANG Dengmao TENG Zhennan TIAN Zhiyu CHEN Zhixue.Reflection on Disease Treatment and Design Issues of Unconventional Rockburst of Bamiao Tunnel on Taoyuan-Bazhong Highway[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 62-68
[11] WU Shuyuan1 CHENG Yong1 XIE Quanmin2 LIU Jiguo1 CHEN Biguang1.Analysis on the Causes of the Large Deformation of Surrounding Rocks of Milashan Tunnel in Tibet[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 69-73
[12] WANG Sui1,2,3 ZHONG Zuliang3 LIU Xinrong3 WU Bo1,2,4 ZHAO Yongbo1,2 LI Zhantao1,2.D-P Yield Criterion Based Elastoplastic Solution of the Circular Pressure Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 74-80
[13] LI Ming YAN Songhong PAN Chunyang ZHANG Xubin.Analysis of Fluid-Solid Coupling Effect during Excavation of the Water-rich Large-section Loess Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 81-88
[14] ZHANG Kai1 CHEN Shougen2 HUO Xiaolong3 TAN Xinrong4.Extension Assessment Model for the Risk of Water Inflow in Karst Tunnels and Its Application[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 89-96
[15] LI Jie1 ZHANG Bin1 FU Ke1 MA Chao1 GUO Jingbo1 NIU Decao2.Site Data Based Prediction of Shield Driving Performance in Compound Strata[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(4): 97-104
Copyright 2010 by MODERN TUNNELLING TECHNOLOGY