A study on the behavior of rock mass subjected to blasting using modified distinct element method

Moon Kyum Kim, S. E. Kim, K. H. Oh, W. J. Kim

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

The behavior of rock mass subjected to blasting is investigated using a modified distinct element method. Rock mass is modeled by distinct elements connected by contact-area and contact-point springs. Contact-area springs are used for fully contacted area of continuum, and contact-point springs for partially contacted area for discontinuous faces. Blast loading is considered by the radial contact force surrounding the charge. The behavior of an interior point of charge is formulated by the conservative equations and the equation of state of ideal gas. The first order reaction rate and the thermal explosion initiation are applied. Lax-Wendroff Flux-Corrected Transport Algorithm is used to solve the governing equations. To investigate the effects of detonation wave and gas pressure on the behavior of rock mass, two loading cases corresponding to loading shape and three loading cases to blasting energy are studied. The gas pressurization and stress wave mechanisms are observed from the analysis using the MDEM.

Original languageEnglish
Number of pages1
JournalInternational journal of rock mechanics and mining sciences & geomechanics abstracts
Volume34
Issue number3-4
DOIs
Publication statusPublished - 1997 Apr 1
EventProceedings of the 1997 36th US Rock Mechanics ISRM International Symposium - New York, NY, USA
Duration: 1997 Jun 291997 Jul 2

Fingerprint

distinct element method
Blasting
blasting
Rocks
Point contacts
Equations of state of gases
gas
rock
Pressurization
Detonation
Gases
equation of state
reaction rate
Reaction rates
Explosions
explosion
Fluxes
energy

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)
  • Engineering(all)

Cite this

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abstract = "The behavior of rock mass subjected to blasting is investigated using a modified distinct element method. Rock mass is modeled by distinct elements connected by contact-area and contact-point springs. Contact-area springs are used for fully contacted area of continuum, and contact-point springs for partially contacted area for discontinuous faces. Blast loading is considered by the radial contact force surrounding the charge. The behavior of an interior point of charge is formulated by the conservative equations and the equation of state of ideal gas. The first order reaction rate and the thermal explosion initiation are applied. Lax-Wendroff Flux-Corrected Transport Algorithm is used to solve the governing equations. To investigate the effects of detonation wave and gas pressure on the behavior of rock mass, two loading cases corresponding to loading shape and three loading cases to blasting energy are studied. The gas pressurization and stress wave mechanisms are observed from the analysis using the MDEM.",
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A study on the behavior of rock mass subjected to blasting using modified distinct element method. / Kim, Moon Kyum; Kim, S. E.; Oh, K. H.; Kim, W. J.

In: International journal of rock mechanics and mining sciences & geomechanics abstracts, Vol. 34, No. 3-4, 01.04.1997.

Research output: Contribution to journalConference article

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AU - Oh, K. H.

AU - Kim, W. J.

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N2 - The behavior of rock mass subjected to blasting is investigated using a modified distinct element method. Rock mass is modeled by distinct elements connected by contact-area and contact-point springs. Contact-area springs are used for fully contacted area of continuum, and contact-point springs for partially contacted area for discontinuous faces. Blast loading is considered by the radial contact force surrounding the charge. The behavior of an interior point of charge is formulated by the conservative equations and the equation of state of ideal gas. The first order reaction rate and the thermal explosion initiation are applied. Lax-Wendroff Flux-Corrected Transport Algorithm is used to solve the governing equations. To investigate the effects of detonation wave and gas pressure on the behavior of rock mass, two loading cases corresponding to loading shape and three loading cases to blasting energy are studied. The gas pressurization and stress wave mechanisms are observed from the analysis using the MDEM.

AB - The behavior of rock mass subjected to blasting is investigated using a modified distinct element method. Rock mass is modeled by distinct elements connected by contact-area and contact-point springs. Contact-area springs are used for fully contacted area of continuum, and contact-point springs for partially contacted area for discontinuous faces. Blast loading is considered by the radial contact force surrounding the charge. The behavior of an interior point of charge is formulated by the conservative equations and the equation of state of ideal gas. The first order reaction rate and the thermal explosion initiation are applied. Lax-Wendroff Flux-Corrected Transport Algorithm is used to solve the governing equations. To investigate the effects of detonation wave and gas pressure on the behavior of rock mass, two loading cases corresponding to loading shape and three loading cases to blasting energy are studied. The gas pressurization and stress wave mechanisms are observed from the analysis using the MDEM.

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