Air Quality Control in Mine Refuge Chamber with Ventilation through Pressure Air Pipeline

Journal article


Zhang, Z., Wu, H., Wang, K., Day, R. and Yuan, Y. (2020). Air Quality Control in Mine Refuge Chamber with Ventilation through Pressure Air Pipeline. Process Safety and Environmental Protection. 135, pp. 46-58. https://doi.org/10.1016/j.psep.2019.12.014
AuthorsZhang, Z., Wu, H., Wang, K., Day, R. and Yuan, Y.
Abstract

A combined experimental and numerical study was performed to improve the performance of the ventilation system in a mine refuge chamber (MRC). In the experiment, CO2 cylinders and dispersion pipes were used to simulate the CO2 release of 50 people, and 0.1 L/min per person of fresh air was provided by an air compressor. A new analytical model for a 50-person MRC was proposed and validated against the experimental data. Sensitivity analysis was carried out to investigate the effects of several control factors. The results indicated the following: (1) The ventilation system layout has a significant influence on the CO2 concentration distribution in an MRC, while the uniformity of the CO2 concentration distribution in the MRC may not be effective with increased number of air inlets. (2) Under a well-arranged ventilation system in the 50-person MRC, the average CO2 concentration can be controlled at less than 0.5 % with a ventilation rate of 0.1 m3/min per person, and less than 0.2 % with a ventilation rate of 0.3 m3/min per person. (3) A quantitative correlation exists between the CO2 concentration and ventilation volume rate, as well as the CO2 release rate, for an MRC under a well-arranged ventilation system.

Year2020
JournalProcess Safety and Environmental Protection
Journal citation135, pp. 46-58
PublisherElsevier
ISSN0957-5820
Digital Object Identifier (DOI)https://doi.org/10.1016/j.psep.2019.12.014
Publication dates
Online20 Dec 2019
Publication process dates
Accepted15 Dec 2019
Deposited24 Jan 2024
Accepted author manuscript
License
File Access Level
Open
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