Modeling scale effects on consequent slope deformation model tests and the discrete element method

Meng-Chia Weng, T. C. Chen, S. J. Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A consequent slope comprises weak planes in the same dip direction along a slope face. This study investigated scale effects on the gravitational deformation of consequent slopes. A series of centrifuge model tests under simplified environmental conditions were performed. Particle image velocimetry was then adopted to evaluate the displacement distribution from the centrifuge model test results. Subsequently, the discrete element method (DEM) was used to execute simulations to provide detailed descriptions of the crack development and failure mechanisms associated with consequent slopes at different scales. The results of this study are summarized as follows. (1) The slopes exhibited similar deformation patterns in the centrifuge model tests. As the gravitational force increased, the magnitude of slope deformation increased significantly. (2) A modified dimensional relationship of material parameters was proposed for DEM simulation. According to this relationship, the simulated deformation patterns were in strong agreement with the actual deformations at various slope scales. (3) According to the DEM simulations, for the slopes with the same slope and weak plane angles, more cracks and displacements were generated in the higher slopes, leading to a greater sliding volume.

Original languageEnglish
Title of host publication51st US Rock Mechanics / Geomechanics Symposium 2017
PublisherAmerican Rock Mechanics Association (ARMA)
Pages647-658
Number of pages12
ISBN (Electronic)9781510857582
StatePublished - 1 Jan 2017
Event51st US Rock Mechanics / Geomechanics Symposium 2017 - San Francisco, United States
Duration: 25 Jun 201728 Jun 2017

Publication series

Name51st US Rock Mechanics / Geomechanics Symposium 2017
Volume1

Conference

Conference51st US Rock Mechanics / Geomechanics Symposium 2017
CountryUnited States
CitySan Francisco
Period25/06/1728/06/17

Keywords

  • Centrifuge
  • Consequent slope
  • Dip slope
  • Discrete element method
  • Physical model

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