Study of Gas Distribution of Highway Tunnel Using Gallery Ventilation

doi:10.3973/j.issn.1672-741X.2016.07.011

Tunnel Construction ›› 2016, Vol. 36 ›› Issue (7): 837-843.DOI: 10.3973/j.issn.1672-741X.2016.07.011

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Study of Gas Distribution of Highway Tunnel Using Gallery Ventilation

ZENG Chang¹, YAO Zhigang², FAN Jianguo², FANG Yong^{2, *}

(1. School of Civil Engineering， Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. Key Laboratory of Transportation Tunnel Engineering of Ministry of Education,  Southwest Jiaotong University, Chengdu 610031, Sichuan, China)

Received:2015-06-02 Revised:2016-04-21 Online:2016-07-20 Published:2016-07-27

Abstract

Abstract:

A threedimentional model of highway tunnel is established and numerically simulated by means of hydrodynamics software Fluent. The gas distribution in main tunnel and connection gallery and at working face are studied; and the gas distribution characteristics in tunnel, especially in recirculating zone, eddy zone and gas concentration zone, are analyzed. The simulation results show that: 1) The gas gushes from a main tunnel has no harm to another main tunnel. 2) The gas concentration in eddy zone is larger than that in surrounding zones. 3) The gas concentration at the side with ventilation pipe is smaller than that at the side without ventilation pipe.

Key words: highway tunnel, gallery ventilation, numerical simulation, gas distribution

CLC Number:

U 45

ZENG Chang, YAO Zhigang, FAN Jianguo, FANG Yong. Study of Gas Distribution of Highway Tunnel Using Gallery Ventilation[J]. Tunnel Construction, 2016, 36(7): 837-843.

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Study of Gas Distribution of Highway Tunnel Using Gallery Ventilation

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