• Login
    View Item 
    •   Home
    • Theses & Dissertations
    • 2021 - Mines Theses & Dissertations
    • View Item
    •   Home
    • Theses & Dissertations
    • 2021 - Mines Theses & Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Mines RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    Login

    Mines Links

    Arthur Lakes LibraryColorado School of Mines

    Statistics

    Display Statistics

    1:40 scaled physical model of a longwall coal mine to investigate mine ventilation and the formation of explosive gas zones, A

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    HonoratoPinheiroJunior_mines_0 ...
    Size:
    6.280Mb
    Format:
    PDF
    Download
    Author
    Honorato Pinheiro Junior, Hamilton
    Advisor
    Brune, Jürgen F.
    Bogin, Gregory E.
    Date issued
    2021
    Keywords
    methane
    scale modelling
    mine ventilation
    longwall
    
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/11124/176481
    Abstract
    The formation of explosive gas zones (EGZs) is a critical problem in longwall coal mines. The investigation of how EGZs might form currently relies on Computational Fluid Dynamics (CFD) models, which have limitations around long solution times and availability of certain validation data in a longwall mine. Physical, scaled models are an alternative to investigating dynamic fluid behavior under complex scenarios that range from aircraft design to airway investigation. Scaled modeling requires extensive dimensional analysis evaluation to replicate complex airflow phenomena adequately. This work presents design and manufacturing considerations to build a 1:40 scaled version of a longwall coal mine to investigate mine ventilation strategies and the formation of EGZs. The physical model presented is the only known scaled model of a longwall coal mine built on a modular design and capable of simulating different ventilation strategies, longwall face advance, and shearer motion. The physical model has a mine-wide atmospheric monitoring system (AMS) capable of measuring airflow speed and gas concentrations in the air courses, longwall face, and gob region. Initial experimental data results prove the model to be consistent with CFD models and published ventilation data of longwall coal mines. The physical model captured the trends of flow leakage and simulated methane accumulation across the longwall face compared to published data of actual mines and CFD models.
    Rights
    Copyright of the original work is retained by the author.
    Collections
    2021 - Mines Theses & Dissertations

    entitlement

     
    DSpace software (copyright © 2002 - 2022)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.