Investigation of Gas and Airflow Distribution in a Block Cave Mine

Details

• Personal Author:
  Jayaraman Sridharan S ; Pan Y ; Tukkaraja P
• Description:
  Block cave mining method poses unique ventilation challenges compared to other underground metal mining methods. This research study focuses on assessing the airflow behavior in regulated airflow distribution systems by developing a 1:100 scaled block cave experimental model and a numerical model. This study also investigated gas flow behavior under various airflow conditions. Based on our findings, we observed that reduction in particle size and porosity of caved materials, decrease in cave footprint, and closure of undercut drifts would increase cave airflow resistance. The increased airflow is found beneficial for gas dilution regardless of its source locations, while the regulated airflow distribution system might deteriorate gas dilution situation when the source is located in the extraction drifts. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Ventilation
• Keywords:
  Airflow Author Keywords: Airflow Distribution Block Cave Ventilation Cave Airflow Resistance Cave Footprint CFD Gas Flow Gas Flow Characteristics Mining Industry Underground Mines
• ISSN:
  2524-3462
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 8 ; South Dakota
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  39
• Issue:
  4
• NIOSHTIC Number:
  nn:20067892
• Citation:
  Min Metall Explor 2022 Aug; 39(4):1821-1832
• Contact Point Address:
  Purushotham Tukkaraja, Department of Mining Engineering and Management, South Dakota Mines, Rapid City, SD, USA, 57701
• Email:
  pt@sdsmt.edu
• Federal Fiscal Year:
  2022
• Performing Organization:
  South Dakota School of Mines and Technology
• Peer Reviewed:
  True
• Start Date:
  20140901
• Source Full Name:
  Mining, Metallurgy & Exploration
• End Date:
  20200831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:dbde5bfdc7b1620f9eb6aa89814a86dfebbebe6d2cccb0eac936e49c463e991d77876e7597098d69f33ae5c15ad453ed12f79850e89aa20348b6233afb698ae3
• Download URL:
  https://stacks.cdc.gov/view/cdc/230129/cdc_230129_DS1.pdf
• File Type:
  [PDF - 3.10 MB ]