Investigation of Parameters Affecting Seismic Potentials in a Deep Longwall Mine

Details

• Personal Author:
  Beale J ; Khademian Z ; Van Dyke MA ; Wickline J
• Description:
  Seismicity can be induced by rock failures or slips along geologic structures around mine workings. Depending on their intensity and proximity to the working area, seismic events may raise safety concerns in underground mining operations. However, the geological and mining parameters leading to destructive seismic events are poorly understood. Monitoring seismic events coupled with geomechanical modeling can be useful tools for understanding underlying mechanisms and main factors causing destructive seismic events. This paper reviews seismic events recorded in a deep longwall mine (>450 m) in Virginia and evaluates the geologic conditions that lead to areas with high seismic event activities (> 1 ML) during mining of longwall panels. Two pseudo two-dimensional models of areas with high and low seismic event activities are constructed in 3DEC software. The variation in the energy content of elastic models is monitored, and potentially damaging events with compression-type and shear-type signatures are identified. The modeling results are compared with historic seismic data to evaluate the model performance in forecasting the seismic potential in each model. The results show the applicability of energy balance calculations for forecasting the approximate location and timing of destructive seismic events. [Description provided by NIOSH]
• Subjects:
  Geology Mining Occupational Health Safety
• Keywords:
  Ground Stability Longwall Mining Monitoring Systems Rock Mechanics Underground Mines
• Series:
  Mining Publications
• ISBN:
  9780979497582
• Publisher:
  American Rock Mechanics Association (ARMA)
• Document Type:
  Text
• Genre:
  Proceedings
• 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
• NIOSHTIC Number:
  nn:20068945
• Citation:
  57th US Rock Mechanics/Geomechanics Symposium, June 25-28, 2023, Atlanta, Georgia. Alexandria, VA: American Rock Mechanics Association (ARMA), 2023 Jun; :ARMA-2023-0434
• Federal Fiscal Year:
  2023
• NORA Priority Area:
  Mining ; Oil and Gas Extraction
• Peer Reviewed:
  False
• Source Full Name:
  57th US Rock Mechanics/Geomechanics Symposium, June 25-28, 2023, Atlanta, Georgia
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:364fa68da267307934e1b37cbb0a3aece137d894c5aab3168bebe05a53e4a4f89826cbc79b53c257ee2674018d1040a937c3cbc90a7fd30b9d81cd7e94409937
• Download URL:
  https://stacks.cdc.gov/view/cdc/215625/cdc_215625_DS1.pdf
• File Type:
  [PDF - 1.34 MB ]