Expanded rock blast modeling capabilities of DMC{_}BLAST, including buffer blasting

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Description

A discrete element computer program named DMC{_}BLAST (Distinct Motion Code) has been under development since 1987 for modeling rock blasting. This program employs explicit time integration and uses spherical or cylindrical elements that are represented as circles in 2-D. DMC{_}BLAST calculations compare favorably with data from actual bench blasts. The blast modeling capabilities of DMC{_}BLAST have been expanded to include independently dipping geologic layers, top surface, bottom surface and pit floor. The pit can also now be defined using coordinates based on the toe of the bench. A method for modeling decked explosives has been developed which allows accurate treatment ... continued below

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11 p.

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Preece, D.S.; Tidman, J.P. & Chung, S.H. December 31, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 58 times , with 6 in the last month . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A discrete element computer program named DMC{_}BLAST (Distinct Motion Code) has been under development since 1987 for modeling rock blasting. This program employs explicit time integration and uses spherical or cylindrical elements that are represented as circles in 2-D. DMC{_}BLAST calculations compare favorably with data from actual bench blasts. The blast modeling capabilities of DMC{_}BLAST have been expanded to include independently dipping geologic layers, top surface, bottom surface and pit floor. The pit can also now be defined using coordinates based on the toe of the bench. A method for modeling decked explosives has been developed which allows accurate treatment of the inert materials (stemming) in the explosive column and approximate treatment of different explosives in the same blasthole. A DMC{_}BLAST user can specify decking through a specific geologic layer with either inert material or a different explosive. Another new feature of DMC{_}BLAST is specification of an uplift angle which is the angle between the normal to the blasthole and a vector defining the direction of explosive loading on particles adjacent to the blasthole. A buffer (choke) blast capability has been added for situations where previously blasted material is adjacent to the free face of the bench preventing any significant lateral motion during the blast.

Physical Description

11 p.

Notes

OSTI as DE97000668

Source

  • 13. annual symposium on explosives and blasting research, Las Vegas, NV (United States), 2-5 Feb 1997

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  • Other: DE97000668
  • Report No.: SAND--96-2604C
  • Report No.: CONF-970253--2
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 432902
  • Archival Resource Key: ark:/67531/metadc685897

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • April 13, 2016, 1:48 p.m.

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Preece, D.S.; Tidman, J.P. & Chung, S.H. Expanded rock blast modeling capabilities of DMC{_}BLAST, including buffer blasting, article, December 31, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc685897/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.