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Evaluation of Mine Ventilation in Large-Opening Underground Stone Mines

Public Domain


Details

  • Personal Author:
  • Description:
    Researchers at the National Institute for Occupational Safety and Health (NIOSH) are conducting research to improve the ventilation of large-opening underground stone mines. The mine ventilation in these mines are characterized by: (1) challenges related to keeping airflow velocities high enough to effectively remove or dilute airborne contaminants, (2) low pressure losses needed to move large air volumes of air, and (3) costly stoppings needed to direct ventilation airflows. Each of two field studies was dedicated to specific focus areas. The first focus area was the characterization of underground mine ventilation airflow. The primary means of airflow control in stone mines is through the use of freestanding booster fans. The primary goal of this study was to identify the effectiveness of various fan types and optimize their placement. Both traverse and grid-based airflow readings were taken at various distances from the fans, ranging from 70 ft to 425 ft away from the fan. The air readings were taken using a vane-anemometer and a handheld hotwire anemometer. The data was used to develop precise computational fluid dynamics models. The second focus area was to determine diesel particulate matter (DPM) concentrations in the mine. For large-opening underground stone mines, controlling DPM exposures dictates the design of the ventilation system. Therefore, researchers carried out the DPM sampling campaign to identify potential areas of concern within the mine. The samples collected during the campaign were analyzed using NIOSH Method 5040. The sampling was done using the Mine Safety and Health Administration's (MSHA) compliance sampling methodology. This paper discusses the analysis of ventilation and contaminant sampling data and its various applications for improving underground mine ventilation of large-opening stone mines. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • Series:
    Mining Publications
  • ISBN:
    9781713872368
  • Publisher:
    Society for Mining, Metallurgy & Exploration (SME)
  • Document Type:
    Text
  • Genre:
    Proceedings
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    PMRD - Pittsburgh Mining Research Division
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    1-5
  • NIOSHTIC Number:
    nn:20067853
  • Citation:
    MineXchange: 2023 SME Annual Conference and Expo, February 26-March 1, 2023, Denver, Colorado, preprint 23-040. Englewood, CO: Society for Mining, Metallurgy & Exploration, 2023 Feb; :1-5
  • Federal Fiscal Year:
    2023
  • NORA Priority Area:
    Mining
  • Peer Reviewed:
    False
  • Source Full Name:
    MineXchange: 2023 SME Annual Conference and Expo, February 26-March 1, 2023, Denver, Colorado, preprint 23-040
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:0792f5a582f4b4e00f78b01e705109058240ebddb9b9f75ebecce39bccf1fe5a260d5cda94f8c7c918055abc10bc96e45831a4f74f0fbba7ef48246c497bc479
  • Download URL:
  • File Type:
    Filetype[PDF - 678.31 KB ]
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