Investigating the Impact of Caving on Longwall Mine Ventilation Using Scaled Physical Modeling

Details

• Personal Author:
  Addis JD ; Gangrade V ; Harteis, Samuel P. ; Schatzel, Steven J.
• Description:
  In longwall mining, ventilation is considered one of the more effective means of controlling gases and dust. In order to study longwall ventilation in a controlled environment, U.S. National Institute for Occupational Safety and Health (NIOSH) researchers built a unique physical model called the longwall instrumented aerodynamic model (LIAM). The LIAM is a 1:30 scale physical model geometrically designed to simulate a single longwall panel. It has an 8.94 by 4.88 m (29 by 16 ft) footprint with a simulated face length of 220 m (720 ft) in full scale. LIAM is built with critical details of the face, gob and mining machinery, and scaled to preserve the physical and dynamic similitude. This paper discusses the gob-face interaction, airflow patterns within the gob, and airflow dynamics on the face for varying roof caving characteristics. Results are discussed to show the impact of caving behind the shields on longwall ventilation. [Description provided by NIOSH]
• Subjects:
  Dust Laboratories Methane Mining Occupational Health Safety Ventilation
• Keywords:
  Author Keywords: Mine Ventilation Dusts Gases Laboratory Testing Longwall Mining Machinery Methanes Models Physical Modeling Roof Caving Underground Mines Underground Mining Ventilation Equipment Ventilation Systems

  More +
• Series:
  Mining Publications
• ISSN:
  0026-5187
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• 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:
  94-96
• Volume:
  71
• Issue:
  7
• NIOSHTIC Number:
  nn:20058598
• Citation:
  Min Eng 2019 Jul; 71(7):94-96
• Email:
  VGangrade@cdc.gov
• Federal Fiscal Year:
  2019
• NORA Priority Area:
  Mining ; Oil and Gas Extraction
• Peer Reviewed:
  True
• Source Full Name:
  Mining Engineering
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f40318ae034f316bbc8b43a9a06d145dba604bb97113fa64d1a140c9d7a7f8a84255afc3e2478de472d1b808efab7144c6fb6758f44381721dbdb252307bf548
• Download URL:
  https://stacks.cdc.gov/view/cdc/227966/cdc_227966_DS1.pdf
• File Type:
  [PDF - 256.30 KB ]