Two-point MPM study of fluidized grains in internal erosion around metro tunnel characterized by an erosion law

IF 5.3 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2025-03-29 DOI:10.1016/j.compgeo.2025.107227

Tianxin Qin , Zhu Song , Chen Wang , Fayun Liang

{"title":"Two-point MPM study of fluidized grains in internal erosion around metro tunnel characterized by an erosion law","authors":"Tianxin Qin , Zhu Song , Chen Wang , Fayun Liang","doi":"10.1016/j.compgeo.2025.107227","DOIUrl":null,"url":null,"abstract":"<div><div>Groundwater infiltration through openings in tunnel linings can lead to the migration of fine soil particles from the coarse particle framework due to seepage forces known as internal erosion. However, current numerical methods face limitations in capturing the key process of the fluidization of fine particles surrounding tunnel linings within acceptable computational costs. To address these challenges, we introduce an erosion law into the two-point material point method where (i) the initiation of the fluidization of fine particles is based on the relative velocity between the solid and fluid phases and (ii) the fluidized soil mass is transferred to the fluid phase and migrated by the seepage force. After the verification of the present method, the internal erosion due to tunnel leakage is analyzed, with parametric analyses of the initial fine particle content, groundwater level, internal friction angle, and opening location. The results indicate that internal erosion accelerates the soil loss during tunnel seepage, highlighting the need for significant attention regarding this issue.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"183 ","pages":"Article 107227"},"PeriodicalIF":5.3000,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computers and Geotechnics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0266352X25001764","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}

引用次数: 0

Abstract

Groundwater infiltration through openings in tunnel linings can lead to the migration of fine soil particles from the coarse particle framework due to seepage forces known as internal erosion. However, current numerical methods face limitations in capturing the key process of the fluidization of fine particles surrounding tunnel linings within acceptable computational costs. To address these challenges, we introduce an erosion law into the two-point material point method where (i) the initiation of the fluidization of fine particles is based on the relative velocity between the solid and fluid phases and (ii) the fluidized soil mass is transferred to the fluid phase and migrated by the seepage force. After the verification of the present method, the internal erosion due to tunnel leakage is analyzed, with parametric analyses of the initial fine particle content, groundwater level, internal friction angle, and opening location. The results indicate that internal erosion accelerates the soil loss during tunnel seepage, highlighting the need for significant attention regarding this issue.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.