Investigating the influence of rock-shape on rockfall dynamics using 3-D DDA

L. Zheng, G. Q. Chen, Y. B. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Rockfall is one of the most frequent, major hazards in mountainous areas and along engineered slopes worldwide. Accurate estimation of rockfall dynamics is essential for rockfall risk assessment, design and performance evaluation of preventive structures. Although many rockfall simulation codes have been developed, a major variable involved in rockfalls, the rock-shape, which strongly affects the rockfall events, is still poorly considered. Three dimensional discontinuous deformation analysis (3-D DDA) is an effective and helpful tool on rockfall analysis which can explicitly account for rock-shape. In this paper, a practical 3-D DDA code is demonstrated to be capable of simulating free falling, rolling, sliding, and bouncing with high accuracy, which indicates the implemented code is capable of providing reliable rockfall analysis. Rockfall simulations are performed on both idealized incline planes as well as bin-planar slopes. Particle shape index has been induced to investigate the influence of rock-shape after impacts occurred. The rockfall movement behaviors: lateral dispersion and jump height are used to obtain the influence of rock-shape. The analysis provides a more detail description of rock masses and useful information on consideration of rock-shape in rockfall simulation.

Original languageEnglish
Title of host publicationISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014
Editors Kaneko, Kodama, Shimizu
PublisherInternational Society for Rock Mechanics
Pages2858-2867
Number of pages10
ISBN (Electronic)9784907430030
Publication statusPublished - Jan 1 2014
Event8th Asian Rock Mechanics Symposium, ARMS 2014 - Sapporo, Japan
Duration: Oct 14 2014Oct 16 2014

Publication series

NameISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014

Other

Other8th Asian Rock Mechanics Symposium, ARMS 2014
CountryJapan
CitySapporo
Period10/14/1410/16/14

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All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Zheng, L., Chen, G. Q., & Zhang, Y. B. (2014). Investigating the influence of rock-shape on rockfall dynamics using 3-D DDA. In Kaneko, Kodama, & Shimizu (Eds.), ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014 (pp. 2858-2867). (ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014). International Society for Rock Mechanics.