期刊
APPLIED MATHEMATICAL MODELLING
卷 38, 期 14, 页码 3467-3484出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2013.11.067
关键词
Discrete sources; Flow divider; Methane emission; Underground mine; Ventilation
资金
- Singapore Economic Development Board (EDB) through Minerals Metals and Materials Technology Centre (M3TC) Research Grant [R-261-501-013-414]
This study addresses methane dispersion in a mine tunnel with discrete methane sources and various methods to handle it. Air flow behavior and methane dispersion in the tunnel are simulated utilizing the computational fluid dynamics (CFD) approach. Various possible conditions which may occur in a mine tunnel are investigated. Simulation results indicate that methane dispersion inside the mine tunnel is influenced significantly by the number as well as location of the sources and quantity of methane released from each source. Furthermore, application of an innovative flow divider which comprises volumetric flow control and flow director, is investigated. It is found that by properly directing the ventilation flow to the location where methane is accumulating can reduce methane concentration below the safe level. In addition, it is noted that focusing the ventilation flow at a point is more effective as compared to dispersing it at several points. This study provides some new ideas for designing an intelligent underground mine ventilation system which can cost-effectively maintain methane concentration below the critical value. (C) 2014 Elsevier Inc. All rights reserved.
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