Pressure-Quantity Characteristic Curves for a Mature Panel Cave

Details

• Personal Author:
  Bhargava R ; Jayaraman Sridharan S ; Pan Y ; Tukkaraja P ; Vytla VVS
• Description:
  Panel caving is an underground bulk mining method that utilizes gravitational force for mining massive, steeply dipping, and deep-seated ore deposits at a lower operating cost. To control dust and gas emissions entering the production level during the extraction of ore from the draw points in a panel cave, relatively negative pressure is created in the cave by installing an exhaust fan in the exhaust drift located on top of the cave. Since caving is a dynamic process, the design of an effective ventilation system is a challenging task, and therefore, estimation of airflow resistance offered by the broken rock inside the cave is critical. The complex and dynamic nature of caving also makes it difficult to predict the airflow resistance by using traditional approaches. This study investigates the effect of changes in the bulk porosity of the broken rock on the cave airflow resistance using computational fluid dynamics (CFD) approach. The results show an inverse relationship between the cave airflow resistance and the bulk cave porosity. The pressure-quantity characteristic curves presented in this paper provide valuable information for sizing and operating an exhaust fan used for a mature panel cave ventilation. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Ventilation
• Keywords:
  Airflow Author Keywords: Cave Airflow Resistance Exhaust Systems Flow Through Porous Media Mining Industry Panel/Block Cave Mining Porosity Underground Mines Ventilation Systems
• ISSN:
  2524-3462
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 8 ; OSHA Region 9 ; 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:20067906
• Citation:
  Min Metall Explor 2022 Aug; 39(4):1841-1851
• Contact Point Address:
  P. Tukkaraja, South Dakota Mines, Rapid City, SD, 57701, USA
• 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:e1fd3968483eed149cf8a182486fdaf047109b9f7cd79fa2c3a21068b016271461a18f025711bdcdc6f3dced476a3c077b44cc6e3aab590ae0bf9a9d536a4226
• Download URL:
  https://stacks.cdc.gov/view/cdc/230140/cdc_230140_DS1.pdf
• File Type:
  [PDF - 2.22 MB ]