New Approach to Evaluate the Stability of Yield Pillars

Details

• Personal Author:
  Morsy K ; Peng S
• Description:
  In this paper a new method to evaluate the stability of yield pillars was introduced. The evaluation of yield pillar stability was conducted in three steps: (1) Estimation of pillar loading numerical modeling is a good tool to estimate the pillar loading for most of the geological, geometrical and mining conditions. In this study, finite elemel1t technique was used to estimate the state of stress, strain, elastic strain energy and plastic energy, etc. at every point within the pillar. (2) Defining the yield pillar loading zones. The proposed method considered the non-uniform stress distribution of yield pillars by dividing the area of the yield pillar into three loading zones, namely core, transition and rib zones. (3) Estimation of stability indicators - an appropriate stability measure was proposed for each loading zone, such as; Core Stability Factor, CSF, Pillar Bump Index, PBI and Rib Instability Index, RIF. A case study of successful and unsuccessful yield pillar application was used to assess the applicability of the proposed method. [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:
  371-377
• NIOSHTIC Number:
  nn:20024635
• Citation:
  Proceedings of the 22nd International Conference on Ground Control in Mining, August 5-7, 2003, Morgantown, West Virginia. Peng SS, Mark C, Khair AW, Heasley KA, eds., Morgantown, WV: West Virginia University, 2003 Aug; :371-377
• Editor(s):
  Peng SS; Mark C; Khair AW
• Federal Fiscal Year:
  2003
• Performing Organization:
  West Virginia University Research Corporation, Morgantown, West Virginia
• Peer Reviewed:
  False
• Start Date:
  20000930
• Source Full Name:
  Proceedings of the 22nd International Conference on Ground Control in Mining, August 5-7, 2003, Morgantown, West Virginia
• End Date:
  20030929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:dc43773bdad8aa1dded373c40ce7c0812bfd6cdf9f5f251a5018b8eb5d79b187524dc3aafde388db6cd07bb40a884283254209f1f5213d2f08fc2f264fdff49a
• Download URL:
  https://stacks.cdc.gov/view/cdc/196338/cdc_196338_DS1.pdf
• File Type:
  [PDF - 4.60 MB ]