Dynamic rock fragmentation: oil shale applications

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Explosive rock fragmentation techniques used in many resource recovery operations have in the past relied heavily upon traditions of field experience for their design. As these resources, notably energy resources, become less accessible, it becomes increasingly important that fragmentation techniques be optimized and that methods be developed to effectively evaluate new or modified explosive deployment schemes. Computational procedures have significant potential in these areas, but practical applications must be preceded by a thorough understanding of the rock fracture phenomenon and the development of physically sound computational models. This paper presents some of the important features of a rock fragmentation model ... continued below

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Pages: 12

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Boade, R. R.; Grady, D. E. & Kipp, M. E. January 1, 1980.

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Description

Explosive rock fragmentation techniques used in many resource recovery operations have in the past relied heavily upon traditions of field experience for their design. As these resources, notably energy resources, become less accessible, it becomes increasingly important that fragmentation techniques be optimized and that methods be developed to effectively evaluate new or modified explosive deployment schemes. Computational procedures have significant potential in these areas, but practical applications must be preceded by a thorough understanding of the rock fracture phenomenon and the development of physically sound computational models. This paper presents some of the important features of a rock fragmentation model that was developed as part of a program directed at the preparation of subterranean beds for in situ processing of oil shale. The model, which has been implemented in a two-dimensional Lagrangian wavecode, employs a continuum damage concept to quantify the degree of fracturing and takes into account experimental observations that fracture strength and fragment dimensions depend on tensile strain rates. The basic premises of the model are considered in the paper as well as some comparisons between calculated results and observations from blasting experiments.

Physical Description

Pages: 12

Notes

NTIS, PC A02/MF A01.

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  • Society for Experimental Stress Analysis meeting, Ft Lauderdale, FL, USA, 12 Oct 1980

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  • Report No.: SAND-80-0857C
  • Report No.: CONF-801052-1
  • Grant Number: AC04-76DP00789
  • Office of Scientific & Technical Information Report Number: 5154323
  • Archival Resource Key: ark:/67531/metadc1060510

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1980

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 2, 2018, 1:18 p.m.

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Boade, R. R.; Grady, D. E. & Kipp, M. E. Dynamic rock fragmentation: oil shale applications, article, January 1, 1980; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc1060510/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.