An effective method for real-time estimation of slope stability with numerical back analysis based on particle swarm optimization

IF 5.8 4区工程技术 Q1 MECHANICS

Applied Rheology Pub Date : 2023-01-01 DOI:10.1515/arh-2022-0143

Jiaqiang Zou, Hao Chen, Yu-hong Jiang, W. Zhang, Aihua Liu

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Abstract

Abstract The purpose of this article is to provide an effective approach to evaluate slope stability in real-time in a reservoir area, which is significant for carrying out risk management for landslide disaster prevention in various engineering practices. A comprehensive idea for stability estimation of bank slope under the influence of rainfall or the reservoir water level is presented in this work. Slope stability analysis and back analysis of soil parameters are both included based on numerical simulation. The mechanical parameters of the bank slope were first back-analyzed using particle swarm optimization (PSO), and real-time stability analysis with high accuracy and efficiency was then established based on multiple continuously monitored displacements. Two case studies were carried out in this study. The results show that (1) based on the real-time monitored displacement and numerical simulation, the mechanical parameters of the slope can be reasonably retrieved through PSO; and (2) based on the inverse mechanical parameters, the safety factors of the slope can be numerically obtained, so that the real-time estimation of slope stability can be realized.

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基于粒子群优化的数值反分析实时估计边坡稳定性的有效方法

摘要本文旨在为库区边坡稳定性的实时评价提供一种有效的方法，对各种工程实践中开展滑坡灾害防治风险管理具有重要意义。本文提出了降雨或水库水位影响下岸坡稳定性评价的综合思路。在数值模拟的基础上，进行了边坡稳定性分析和土体参数反分析。首先利用粒子群算法(PSO)对岸坡力学参数进行反分析，建立基于多次连续监测位移的高精度、高效的岸坡实时稳定性分析。本研究进行了两个案例研究。结果表明:(1)基于位移实时监测和数值模拟，通过粒子群算法可以合理地反演边坡的力学参数;(2)基于反力学参数，可以数值计算边坡的安全系数，从而实现边坡稳定性的实时估计。

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

Applied Rheology 物理-力学

CiteScore

3.00

自引率

5.60%

发文量

审稿时长

>12 weeks

期刊介绍： Applied Rheology is a peer-reviewed, open access, electronic journal devoted to the publication in the field of applied rheology. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication.