Elastic Deformation Due to Polygonal Dislocations in a Transversely Isotropic Half-Space

Details

• Personal Author:
  Chen WQ ; Griffith WA ; Pan E ; Yuan JH
• Description:
  Based upon the fundamental solution to a single straight dislocation segment, a complete set of exact closed-form solutions is presented in a unified manner for elastic displacements and strains due to general polygonal dislocations in a transversely isotropic half-space. These solutions are systematically composed of two parts: one representing the solution in an infinite transversely isotropic medium and the other accounting for the influence of the free surface of the half-space. Numerical examples are provided to illustrate the effect of material anisotropy on the elastic displacement and strain fields associated with dislocations. It is shown that if the rock mass is strongly anisotropic, surface displacements calculated using an isotropic model may result in errors greater than 20%, and some of the strain components near the fault tip may vary by over 200% compared with the transversely isotropic model. Even for rocks with weak anisotropy, the strains based on the isotropic model can also result in significant errors. Our analytical solutions along with the corresponding MATLAB source codes can be used to predict the static displacement and strain fields due to earthquakes, particularly when the rock mass in the half-space is best approximated as transversely isotropic, as is the case for most sedimentary basins. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety Software
• Keywords:
  Computer Models Earthquakes Elastic Properties Geologic Formations Geologic Models Mathematical Models Rock Mechanics
• ISSN:
  0037-1106
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 3 ; OSHA Region 5 ; OSHA Region 6 ; Pennsylvania ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  104
• Issue:
  6
• NIOSHTIC Number:
  nn:20053119
• Citation:
  Bull Seismol Soc Am 2014 Dec; 104(6):2698-2716
• Contact Point Address:
  E. Pan, Department of Civil Engineering, University of Akron, Akron, Ohio 44325
• Email:
  pan2@uakron.edu
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Mining
• Performing Organization:
  University of Texas at Arlington
• Peer Reviewed:
  True
• Start Date:
  20121122
• Source Full Name:
  Bulletin of the Seismological Society of America
• End Date:
  20150831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:57f01b72cf665e01b8f32d29c67394e732034cfb81ce5340237367b53997050be1549c6a02e8df00a1b07b46213c24716ed12c2a46a2beb5baeb9dd78025c813
• Download URL:
  https://stacks.cdc.gov/view/cdc/215945/cdc_215945_DS1.pdf
• File Type:
  [PDF - 1.22 MB ]