Stability analysis of soil-rock mixture slopes using an enriched nodal-based continuous-discontinuous deformation analysis method

IF 4.1 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2025-06-19 DOI:10.1016/j.enganabound.2025.106352

Hangtian Song , Yongtao Yang , Meizhong Huang , Wenan Wu , Yang Xia , Junfeng Li , Hong Zheng

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引用次数: 0

Abstract

To analyze the stability of soil-rock mixture (SRM) slopes, the nodal-based continuous-discontinuous deformation analysis method (NCDDAM), originally proposed to simulate the movement of rock block system and rock failure processes, is further enriched in the present work. In the enriched NCDDAM, the nonlinear deformation effects of soil matrix and rock blocks are considered with the widely used Mohr-Coulomb model in geotechnical engineering. Additionally, the nonlinear contact mechanical behavior at the soil-rock interfaces is simulated with a series of non-breakable joint elements. Furthermore, to accurately obtain the factor of safety (FOS) of SRM slopes, an improved strength reduction technique, which accounts for the

φ - ν

inequality, is incorporated in NCDDAM. The accuracy of the enriched NCDDAM in evaluating FOSs of slopes is validated through the stability analysis of a homogeneous slope. Based on the enriched NCDDAM, the influences of rock block content, main axis direction of rock blocks, and strength parameters of soil-rock interface on the stability of SRM slopes are fully investigated. The enriched NCDDAM deserves further investigation.

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基于富节点连续-非连续变形分析方法的土石混合体边坡稳定性分析

为了分析土石混合体（SRM）边坡的稳定性，本工作进一步丰富了基于节点的连续-非连续变形分析方法（NCDDAM），该方法最初是为了模拟岩石块体系统的运动和岩石破坏过程而提出的。在富集NCDDAM中，采用岩土工程中广泛使用的莫尔-库仑模型考虑土基质和岩石块体的非线性变形效应。此外，采用一系列不可破节理单元模拟了土石界面处的非线性接触力学行为。此外，为了准确地获得SRM边坡的安全系数（FOS），在NCDDAM中引入了考虑φ−ν不等式的改进强度折减技术。通过对均质边坡的稳定性分析，验证了富集NCDDAM评价边坡FOSs的准确性。在富集NCDDAM的基础上，充分研究了块体含量、块体主轴方向、土-岩界面强度参数对SRM边坡稳定性的影响。浓缩的NCDDAM值得进一步调查。

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

Engineering Analysis with Boundary Elements 工程技术-工程：综合

CiteScore

5.50

自引率

18.20%

发文量

368

审稿时长

56 days

期刊介绍： This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.