Numerical Modeling of the Gob Loading Mechanism in Longwall Coal Mines

Details

• Personal Author:
  Morsy K ; Peng SS
• Description:
  Longwall mining is one of the most widely practiced underground coal mining method. The behavior of the longwall gob is very critical in the understanding of the complex ground response to longwall mining. In the limited data available, the values of gob moduli used in numerical modeling ranged from 1,000 psi to over 300,000 psi. Such a wide variation in moduli would greatly affect the results of the numerical analysis. A better understanding of the behavior of the gob will allow numerical models to be more accurate for simulating longwall mining conditions. In this study, a gob model based on the Terzaghi's model was incorporated into the comprehensive finite element package, ABAQUS, to simulate the loading behavior of longwall gob material. A case study was used to verify the proposed gob model. [Description provided by NIOSH]
• Subjects:
  Case Reports Coal Coal Mining Engineering Geology Mining Occupational Exposure Occupational Health Safety
• Keywords:
  Case-studies Coal-mining Engineering-controls Ground-control Ground-stability Mining-industry Models Occupational-hazards Rock-bursts Rock-falls Rock-mechanics

  More +
• ISBN:
  0939084569
• Publisher:
  West Virginia University
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  58-67
• NIOSHTIC Number:
  nn:20024634
• Citation:
  Proceedings of the 21st International Conference on Ground Control in Mining, August 6-8, 2002, Morgantown, West Virginia. Peng SS, Mark C, Khair AW, Heasley KA, eds., Morgantown, WV: West Virginia University, 2002 Aug; :58-67
• Editor(s):
  Peng SS; Mark C; Khair AW; Heasley KA
• Federal Fiscal Year:
  2002
• Performing Organization:
  West Virginia University Research Corporation, Morgantown, West Virginia
• Peer Reviewed:
  False
• Start Date:
  20000930
• Source Full Name:
  Proceedings of the 21st International Conference on Ground Control in Mining, August 6-8, 2002, Morgantown, West Virginia
• End Date:
  20030929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:1e655ded2254eb622e965f57d814a6e7cfdb354d36dd2eb27f11f2703ead27aa2625ee2cb3057cd6e2bdc85a8a3264aba5bfed1b95fafaff0ab748ea634e749f
• Download URL:
  https://stacks.cdc.gov/view/cdc/196337/cdc_196337_DS1.pdf
• File Type:
  [PDF - 1.27 MB ]