Study of Optimization of Construction Ventilation of Wanhua Yantai Underground Liquefied Hydrocarbon Watersealed Cavern Group

doi:10.3973/j.issn.1672-741X.2017.02.016

Tunnel Construction ›› 2017, Vol. 37 ›› Issue (2): 230-235.DOI: 10.3973/j.issn.1672-741X.2017.02.016

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Study of Optimization of Construction Ventilation of Wanhua Yantai Underground Liquefied Hydrocarbon Watersealed Cavern Group

CHEN Haifeng

(The First Construction Division Co., Ltd. of China Railway Tunnel Group, Chongqing 401123, China)

Received:2016-08-18 Revised:2016-11-21 Online:2017-02-20 Published:2017-03-04

Abstract

Abstract:

The large crosssection construction ventilation is very important in underground watersealed cavern group. As a result, the amount of vertical ventilation shafts is increased. In this paper, 3D numerical simulation method is adopted to analyze the distribution laws of CO and the influence of locations of fans in air chamber on fan efficiency. The results show that: 1) The concentration of CO near working face is less than 24×10-6 after 30 minutes of ventilation after blasting of working face, which can meet related requirements. 2) The fan efficiency of 2 line typed is higher than that of 1 line typed; and the fan efficiency with 2 m span among fan group is the highest.

Key words: underground watersealed cavern group, construction ventilation, ventilation effect, fan efficiency

CLC Number:

U 453.5

CHEN Haifeng. Study of Optimization of Construction Ventilation of Wanhua Yantai Underground Liquefied Hydrocarbon Watersealed Cavern Group[J]. Tunnel Construction, 2017, 37(2): 230-235.

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Study of Optimization of Construction Ventilation of Wanhua Yantai Underground Liquefied Hydrocarbon Watersealed Cavern Group

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