Curtin University Homepage
  • Library
  • Help
    • Log in

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    A novel model for rapid correcting airflow velocity in semicircular arch tunnel of coal mine

    Access Status
    Fulltext not available
    Authors
    Wei, L.
    Cheng, Jianwei
    Luo, X.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Abstract

    Accurate determination of air quantity delivered in underground coal mine tunnels is essential to ensure that the ventilation system is underground normal operation. Currently, the location of airflow velocity sensor hanged up in the semicircular arch tunnels of an underground coal mine is only based on a miner's experiences. Then, by comparing the velocity records obtained from sensors with ventilation engineers' onsite measurements, a set of correction factors are determine to correct and to derive the "real" airflow velocity. Apparently, this method is deeply subjected to the accuracy of onsite measurements and is prone to result in serious errors, and then to degrade the reliability of underground monitoring system. Therefore, the research works conducted in this paper aims to develop a fast and reliable model to rapidly correct the airflow velocity of semicircular arch tunnels in underground coal mines. By using theoretical analysis, numerical simulation and field experiments, the air velocity distribution pattern in the semicircular arch tunnel is investigated. The relationship between the point-monitored airflow velocity and the cross-sectional average velocity is analyzed. Then, a model with the error less than 5% for rapid airflow velocity correction is proposed, which ensures that the "real" average air velocity in the tunnel can be accurately obtained by using the point-monitored velocity after correction.

    Citation
    Wei, L. and Cheng, J. and Luo, X. 2015. A novel model for rapid correcting airflow velocity in semicircular arch tunnel of coal mine. Electronic Journal of Geotechnical Engineering. 20 (2): pp. 473-484.
    Source Title
    Electronic Journal of Geotechnical Engineering
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/18558
    Collection
    • Curtin Research Publications

    Related items

    Showing items related by title, author, creator and subject.

    • CFD modelling of ventilation optimization for improving mine safety in longwall working faces
      Cheng, Jianwei; Li, S.; Zhang, F.; Zhao, C.; Yang, S.; Ghosh, A. (2016)
      © 2016 Elsevier Ltd. Mining coal seams with high coal gas content and coal spontaneous combustion (SponCom) risk is often a challenge for mining engineers. Control measures for maintaining the gas concentration under the ...
    • Evaluation of monorail haulage systems in metalliferous underground mining
      Besa, Bunda (2010)
      The decline is a major excavation in metalliferous mining since it provides the main means of access to the underground and serves as a haulage route for underground trucks. However, conventional mining of the decline to ...
    • Computational fluid dynamics study of tracer gas dispersion in a mine after different ventilation damage scenarios
      Xu, Guang; Jong, E.; Luxbacher, K.; Ragab, S. (2012)
      Tracer gases are an effective method for assessment of mine ventilation systems, but their dispersion characteristics can differ substantially as ventilation parameters, such as flow path and velocity, vary. This research ...

    Browse

    Communities & CollectionsIssue DateAuthorsTitlesSubjectsDocument TypesThis CollectionIssue DateAuthorsTitlesSubjectsDocument Types

    My Account

    Log in

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Connect with Curtin

    • 
    • 
    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158