Modeling effect of rock shape characteristics on run-out distribution of rockfalls

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2024-11-08 DOI:10.1016/j.sandf.2024.101531

T. Yoshida , R. Nomura , Y. Tuda , I. Yoshida , K. Terada , S. Moriguchi

引用次数: 0

Abstract

The aim of this study was to analyze and model the effect of rock shapes on the run-out distribution characteristics of rockfalls. To this end, we conducted a parametric study of rockfall simulations using the discrete element method, which is a numerical simulation method capable of directly representing rock shapes. The results indicated a strong correlation between the sphericity of rocks and the run-out distribution characteristics, expressed by two types of sphericity. Furthermore, we developed a regression model that can predict the run-out distribution using these two sphericities and the parameters of the calculation conditions as the explanatory variables. Although there is some room for improvement in terms of the developed regression model, it was confirmed that the relationship between the sphericity of rocks and the run-out distribution characteristics suggests the potential to enhance efficient rockfall risk assessments through numerical analysis.

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模拟岩石形状特征对落石冲出分布的影响

本研究的目的是分析和模拟岩石形状对落石冲出分布特征的影响。为此，我们使用离散元法进行了落石模拟参数研究，离散元法是一种能够直接表示岩石形状的数值模拟方法。研究结果表明，岩石的球度与落石分布特征之间存在很强的相关性，具体表现为两种球度。此外，我们还建立了一个回归模型，利用这两种球度和计算条件参数作为解释变量，可以预测跑偏分布。虽然所建立的回归模型仍有改进的余地，但已证实岩石的球度与崩落分布特征之间的关系表明，通过数值分析，有可能提高有效的落石风险评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.