The influence of the particle shape of falling rock-mass on the maximum travel distance

Tadashi Kawai, T. Yoshii, J. Kim, M. Kazama

Research output: Contribution to conferencePaperpeer-review

Abstract

In the safety evaluation of nuclear facilities surrounded by slopes, it is necessary to evaluate the behavior of the rock mass falling due to slope failures caused by earthquake. At present, much research on the behavior of single rocks is being conducted, but there are few studies on behaviors when many rocks fall at the same time under the effect of interaction with other rocks. Therefore, in this research, the experiments were conducted with the purpose of revealing factors that influence the maximum travel distance when a rock mass collapses in a group. In addition, a numerical analysis (distinct-element method) was also performed. From those results, it was revealed that the travel distance of discoid rocks becomes longer due to the presence of other rocks, when discussing the maximum travel distance of a collapsing rock mass. Observation of the behavior of the discoid particles in the numerical analysis revealed that the discoid particles traveling longer stood up like a tire due to interaction with other particles in the rock mass when falling down the slope.

Original languageEnglish
Publication statusPublished - 2020
Event16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019 - Taipei, Taiwan, Province of China
Duration: 2019 Oct 142019 Oct 18

Conference

Conference16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019
CountryTaiwan, Province of China
CityTaipei
Period19/10/1419/10/18

Keywords

  • Discoid shape
  • Interaction
  • Maximum travel distance
  • Rock mass falling
  • Slope failure

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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