Numerical simulation of air ventilation in super-large underground developments

Li, Ming, Aminossadati, Saiied M. and Wu, Chao (2016) Numerical simulation of air ventilation in super-large underground developments. Tunnelling and Underground Space Technology, 52 38-43. doi:10.1016/j.tust.2015.11.009


Author Li, Ming
Aminossadati, Saiied M.
Wu, Chao
Title Numerical simulation of air ventilation in super-large underground developments
Journal name Tunnelling and Underground Space Technology   Check publisher's open access policy
ISSN 0886-7798
1878-4364
Publication date 2016-02-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.tust.2015.11.009
Open Access Status Not Open Access
Volume 52
Start page 38
End page 43
Total pages 6
Place of publication Kidlington, Oxford United Kingdom
Publisher Pergamon Press
Collection year 2016
Language eng
Formatted abstract
Recent advancements in engineering technology have enabled the construction of super-large underground engineering projects in China. Currently, the ventilation requirements and standards of normal-size underground spaces are used for super-large underground excavating engineering projects in China. For example, the minimum air velocity of 0.15 m/s is the standard velocity for normal-size underground spaces; however, this value is also used as the required air velocity for diluting underground contaminants in super-large underground developments. This paper aims to examine the minimum ventilation requirements for super-large underground developments (S > 100 m2). A three-dimensional computational domain representing a full-scale underground space has been developed. The pertinent parameters such as dust concentration, smoke density, oxygen concentration and air temperature have been simulated. The results show that at some specific underground conditions, the ventilation air velocity of 0.15 m/s is sufficient to control the dust level, provide required oxygen concentration and maintain the air temperature at acceptable levels during development; however, it is not sufficient to bring the CO concentration below an acceptable safe limit. This must be considered by the ventilation system designers of super-large underground developments.
Keyword Ventilation
Carbon monoxide
Super-large underground development
Dust
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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