Article(id=1228279672568480595, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1228279664221815452, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2408611, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1731859200000, receivedDateStr=2024-11-18, revisedDate=1747238400000, revisedDateStr=2025-05-15, acceptedDate=null, acceptedDateStr=null, onlineDate=1770774294272, onlineDateStr=2026-02-11, pubDate=1754582400000, pubDateStr=2025-08-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770774294272, onlineIssueDateStr=2026-02-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770774294272, creator=13701087609, updateTime=1770774294272, updator=13701087609, issue=Issue{id=1228279664221815452, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='22', pageStart='9211', pageEnd='9648', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1770774292283, creator=13701087609, updateTime=1770777611996, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228293588207992892, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1228279664221815452, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228293588207992893, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1228279664221815452, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=9495, endPage=9504, ext={EN=ArticleExt(id=1228279675550630844, articleId=1228279672568480595, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Mechanism of Urban Road Collapse Caused by Pipeline Leakage Based on DEM-CFD Method, columnId=1228279670542627833, journalTitle=Science Technology and Engineering, columnName=Papers·Architectural Science, runingTitle=null, highlight=null, articleAbstract=
Pipeline leakage is a major cause of urban road collapse accidents. Understanding the evolution process and catastrophic mechanisms of road subsidence is crucial for preventing such safety incidents. Focusing on sewage pipelines in Beijing municipal roads, this study employs DEM-CFD(discrete element method-computational fluid dynamics) coupled flow-solid approach. Microscopic model parameters were calibrated based on laboratory experiments to simulate deformation and cavity evolution in sandy soil layers under various pipeline leakage locations and burial depths. Key parameters, including particle displacement, soil compactness, and medium flow, were analyzed during cavity formation. The results indicate that leakage at the top and middle of the pipeline leads to the formation of a funnel-shaped cavity as water and soil are lost. Without traffic load, the road surface exhibits negligible settlement. By analyzing particle displacement and compactness variations, the soil deformation was divided into stable, loose, and cavity zones, and an elliptical partition model was established for the loose zone. Based on the particle loss rate, the progressive failure process of the soil was classified into three stages: particle migration, rapid loss, and gradual convergence. In terms of cavity formation time, subsidence extent, particle loss rate, and total particle loss, leakage at the pipeline’s middle section yielded the highest values, followed by the top section, with the lowest at the bottom section. However, bottom leakage resulted in the largest loose zone. These findings provide theoretical support for detecting and identifying underground risks associated with urban road collapse disasters.
, correspAuthors=Shu-ya LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Lian-jin TAO, Qi WU, Shu-ya LI, Bo-han SONG, Jing PAN, Wei SUN), CN=ArticleExt(id=1228279687273710231, articleId=1228279672568480595, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于DEM-CFD方法的管线渗漏引发城市道路塌陷的致灾机理, columnId=1228279671742197785, journalTitle=科学技术与工程, columnName=论文·建筑科学, runingTitle=null, highlight=null, articleAbstract=
管线渗漏是城市道路塌陷事故的重要诱因,明确道路塌陷的演化规律与灾变机理是安全事故防控的关键。针对北京市政道路污水管线,采用离散元-流体力学(DEM-CFD)流固耦合方法,在室内试验基础上标定模型细观参数,模拟管线不同破损位置和埋深条件下,砂土地层变形损失规律和空洞演化规律,重点分析颗粒位移、密实度和介质流量等参数在空洞形成过程中的变化特征。研究结果表明:管线顶部和腰部渗漏时,砂土层随着水和土体的流失会形成漏斗状的空洞。在无交通荷载作用下,路面基本不发生沉降。结合颗粒位移及密实度变化规律,可将地层变形破坏分为稳定区、疏松区和空洞区,并建立了疏松区的椭圆分区模型。根据颗粒损失率将地层渐进破坏过程分为颗粒运移阶段、快速损失阶段和缓慢收敛阶段。在空洞形成时间、沉槽范围、颗粒流失速度和总量等指标方面,腰部渗漏工况为最大值,顶部渗漏次之,底部渗漏为最小值,但底部渗漏引发的疏松区的范围最大。研究结果可对城市道路致塌地下灾害风险检测与识别提供理论支持。
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, authorsList=陶连金, 吴琦, 栗书亚, 宋博涵, 潘菁, 孙伟)}, authors=[Author(id=1228369854827262511, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ljtao@bjut.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1228369854911148601, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, authorId=1228369854827262511, language=EN, stringName=Lian-jin TAO, firstName=Lian-jin, middleName=null, lastName=TAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228369854990840383, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, authorId=1228369854827262511, language=CN, stringName=陶连金, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=北京工业大学城市与工程安全减灾教育部重点实验室, 北京 100124, bio={"content":"
陶连金(1964—),男,汉族,黑龙江鸡西人,博士,教授。研究方向:地下结构抗震分析与设计方法。E-mail:ljtao@bjut.edu.cn。
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陶连金(1964—),男,汉族,黑龙江鸡西人,博士,教授。研究方向:地下结构抗震分析与设计方法。E-mail:ljtao@bjut.edu.cn。
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3(2): 129-132., articleTitle=Sublevel caving, refAbstract=null)], funds=[Fund(id=1228369865816338441, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, awardId=42072308, language=CN, fundingSource=国家自然科学基金(42072308), fundOrder=null, country=null), Fund(id=1228369865896030220, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, awardId=42472340, language=CN, fundingSource=国家自然科学基金(42472340), fundOrder=null, country=null), Fund(id=1228369866042830866, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, awardId=8242005, language=CN, fundingSource=北京市自然科学基金(8242005), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1228369854709821991, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, xref=null, ext=[AuthorCompanyExt(id=1228369854718210601, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, companyId=1228369854709821991, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China), AuthorCompanyExt(id=1228369854726599209, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, companyId=1228369854709821991, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=北京工业大学城市与工程安全减灾教育部重点实验室, 北京 100124)])], figs=[ArticleFig(id=1228369859294196491, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.1, caption=
Road collapse near Hujialou neighborhood, Beijing, China, figureFileSmall=xfGw8YXwMPmMHPPhMKqLQQ==, figureFileBig=Ud4KcSneMXO7r4pp5SODhA==, tableContent=null), ArticleFig(id=1228369859424219923, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图1, caption=
北京市呼家楼小区附近道路塌陷事故, figureFileSmall=xfGw8YXwMPmMHPPhMKqLQQ==, figureFileBig=Ud4KcSneMXO7r4pp5SODhA==, tableContent=null), ArticleFig(id=1228369859529077532, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.2, caption=
Proportion distribution of factors inducing ground collapse on urban roads, figureFileSmall=htlTLWX/0SARQFo7Up4RqA==, figureFileBig=+tKku6qeOl1tqq0I2LztxA==, tableContent=null), ArticleFig(id=1228369859629740831, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图2, caption=
城市道路地面塌陷诱发因素比例分布, figureFileSmall=htlTLWX/0SARQFo7Up4RqA==, figureFileBig=+tKku6qeOl1tqq0I2LztxA==, tableContent=null), ArticleFig(id=1228369859747181351, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.3, caption=
Computational model of the coupled DEM-CFD method, figureFileSmall=SvKS9slz9+WX0IE7vNtDBA==, figureFileBig=2Rb64P6JOFzrYxlfRP7SCQ==, tableContent=null), ArticleFig(id=1228369859856233262, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图3, caption=
DEM-CFD耦合方法计算模型, figureFileSmall=SvKS9slz9+WX0IE7vNtDBA==, figureFileBig=2Rb64P6JOFzrYxlfRP7SCQ==, tableContent=null), ArticleFig(id=1228369859973673780, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.4, caption=
Pipe and wall model, figureFileSmall=BxAb7swLJ27C3eQLwjqCww==, figureFileBig=sDIEftyjCXcHl79UQY0XYw==, tableContent=null), ArticleFig(id=1228369860061754174, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图4, caption=
管线及墙体模型, figureFileSmall=BxAb7swLJ27C3eQLwjqCww==, figureFileBig=sDIEftyjCXcHl79UQY0XYw==, tableContent=null), ArticleFig(id=1228369860145640260, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.5, caption=
Variation of pore water pressure gradient in the seepage field, figureFileSmall=pn7FPMgigwbYM02EOE8dgQ==, figureFileBig=rc1S/GnqqUYPgULJcw1nTw==, tableContent=null), ArticleFig(id=1228369860346966860, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图5, caption=
渗流场孔压梯度, figureFileSmall=pn7FPMgigwbYM02EOE8dgQ==, figureFileBig=rc1S/GnqqUYPgULJcw1nTw==, tableContent=null), ArticleFig(id=1228369860418270033, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.6, caption=
Particle gradation curve, figureFileSmall=9PrXiA0x4bI/gqEi/sH/2Q==, figureFileBig=pB4o6/JaRG8+3PAFpxssPg==, tableContent=null), ArticleFig(id=1228369860502156120, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图6, caption=
颗粒级配曲线, figureFileSmall=9PrXiA0x4bI/gqEi/sH/2Q==, figureFileBig=pB4o6/JaRG8+3PAFpxssPg==, tableContent=null), ArticleFig(id=1228369860632179549, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.7, caption=
Calibration results of fine view parameters, figureFileSmall=OOQrTleNilbqXGTd+k5cIw==, figureFileBig=OJIjIqetqAactvKiwOQOqg==, tableContent=null), ArticleFig(id=1228369860732842851, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图7, caption=
细观参数标定结果, figureFileSmall=OOQrTleNilbqXGTd+k5cIw==, figureFileBig=OJIjIqetqAactvKiwOQOqg==, tableContent=null), ArticleFig(id=1228369860816728940, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.8, caption=
Verification of the seepage model, figureFileSmall=Nc+djgTZJdM48aphIQEc5w==, figureFileBig=b0/owUxXDkKqd0kbBmpMAQ==, tableContent=null), ArticleFig(id=1228369860921586544, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图8, caption=
渗流模型验证, figureFileSmall=Nc+djgTZJdM48aphIQEc5w==, figureFileBig=b0/owUxXDkKqd0kbBmpMAQ==, tableContent=null), ArticleFig(id=1228369861051609977, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.9, caption=
Soil deformation pattern during top leakage, figureFileSmall=mSkfJ/r9HCBo/FfGGJ486g==, figureFileBig=+shJoSfY4Wg3bd18uROsXA==, tableContent=null), ArticleFig(id=1228369861139690364, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图9, caption=
顶部渗漏时土体变形模式, figureFileSmall=mSkfJ/r9HCBo/FfGGJ486g==, figureFileBig=+shJoSfY4Wg3bd18uROsXA==, tableContent=null), ArticleFig(id=1228369861206799234, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.10, caption=
Soil deformation pattern during waist leakage, figureFileSmall=QgFazuk//Oi4xn9X9enlCQ==, figureFileBig=OqnNW7bJmhxhelRxG3ar6w==, tableContent=null), ArticleFig(id=1228369861307462536, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图10, caption=
腰部渗漏时土体变形模式, figureFileSmall=QgFazuk//Oi4xn9X9enlCQ==, figureFileBig=OqnNW7bJmhxhelRxG3ar6w==, tableContent=null), ArticleFig(id=1228369861399737226, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.11, caption=
Soil deformation pattern during bottom leakage, figureFileSmall=hK8I3+Vcf8iqIJijLusjww==, figureFileBig=XweGllKFcK4Br6KoWxSzwg==, tableContent=null), ArticleFig(id=1228369861483623309, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图11, caption=
底部渗漏时土体变形模式, figureFileSmall=hK8I3+Vcf8iqIJijLusjww==, figureFileBig=XweGllKFcK4Br6KoWxSzwg==, tableContent=null), ArticleFig(id=1228369861575898002, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.12, caption=
Soil erosion evolution process[20], figureFileSmall=tKVJl8mC/zxx7WZ8SJAX5w==, figureFileBig=OyiEtTUHEvCL4FsYlmn5lQ==, tableContent=null), ArticleFig(id=1228369861655589784, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图12, caption=
土体侵蚀演化过程[20], figureFileSmall=tKVJl8mC/zxx7WZ8SJAX5w==, figureFileBig=OyiEtTUHEvCL4FsYlmn5lQ==, tableContent=null), ArticleFig(id=1228369863069070239, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.13, caption=
Measured circular cloth distribution, figureFileSmall=zbeeVIQjf/R2B/PNp7VOFg==, figureFileBig=GlWKU2oD9kf3Lb6TqDIh/w==, tableContent=null), ArticleFig(id=1228369863178122144, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图13, caption=
测量圆布置图, figureFileSmall=zbeeVIQjf/R2B/PNp7VOFg==, figureFileBig=GlWKU2oD9kf3Lb6TqDIh/w==, tableContent=null), ArticleFig(id=1228369863287174054, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.14, caption=
Pattern of change in soil compactness during top leakage, figureFileSmall=d3Gs6ADbne3sL1sTmW88gw==, figureFileBig=4/E3WtZyfkNnK9uVJgtXUA==, tableContent=null), ArticleFig(id=1228369863417197482, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图14, caption=
顶部渗漏时土体密实度变化模式, figureFileSmall=d3Gs6ADbne3sL1sTmW88gw==, figureFileBig=4/E3WtZyfkNnK9uVJgtXUA==, tableContent=null), ArticleFig(id=1228369863534637996, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.15, caption=
Pattern of change in soil compactness during lumbar leakage, figureFileSmall=E53KOq0AbJB1g2/si3WYlQ==, figureFileBig=hK8yAjfRA7vzs+TAqnw91w==, tableContent=null), ArticleFig(id=1228369863643689904, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图15, caption=
腰部渗漏时土体密实度变化模式, figureFileSmall=E53KOq0AbJB1g2/si3WYlQ==, figureFileBig=hK8yAjfRA7vzs+TAqnw91w==, tableContent=null), ArticleFig(id=1228369863811462073, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.16, caption=
Pattern of change in soil compactness during bottom leakage, figureFileSmall=sZ2Q3HQjD0aB9xG1x2QcgA==, figureFileBig=7nNDiZHVHnONTxluYYCaFw==, tableContent=null), ArticleFig(id=1228369863979234236, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图16, caption=
底部渗漏时土体密实度变化模式, figureFileSmall=sZ2Q3HQjD0aB9xG1x2QcgA==, figureFileBig=7nNDiZHVHnONTxluYYCaFw==, tableContent=null), ArticleFig(id=1228369864088286146, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.17, caption=
Density cloud at different burial depths and seepage locations, figureFileSmall=MsP7GWaHuRk/cGJSJ8WFYw==, figureFileBig=Lz2VCCBZED2YZqU4bkr+og==, tableContent=null), ArticleFig(id=1228369864197338053, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图17, caption=
不同埋深和渗漏位置时密实度云图, figureFileSmall=MsP7GWaHuRk/cGJSJ8WFYw==, figureFileBig=Lz2VCCBZED2YZqU4bkr+og==, tableContent=null), ArticleFig(id=1228369864302195659, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.18, caption=
Subsidence trough profile curve of the cavity, figureFileSmall=RhN8j45cuuDNP+pZtKCMqA==, figureFileBig=gMJcYXI46hF/AKo/0D+9Xg==, tableContent=null), ArticleFig(id=1228369864394470351, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图18, caption=
空洞沉槽轮廓曲线, figureFileSmall=RhN8j45cuuDNP+pZtKCMqA==, figureFileBig=gMJcYXI46hF/AKo/0D+9Xg==, tableContent=null), ArticleFig(id=1228369864482550740, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.19, caption=
Schematic diagram of the elliptical zoning method, figureFileSmall=E5uSLanhLbrx9dZsaZzr9g==, figureFileBig=Xil7bxE04uv/3uL+nhuS9g==, tableContent=null), ArticleFig(id=1228369864549659608, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图19, caption=
椭圆分区示意图, figureFileSmall=E5uSLanhLbrx9dZsaZzr9g==, figureFileBig=Xil7bxE04uv/3uL+nhuS9g==, tableContent=null), ArticleFig(id=1228369864629351390, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Fig.20, caption=
Change curve of particle loss rate, figureFileSmall=CE4Ws33CYhjtlvCrko4fDQ==, figureFileBig=D3psloyUYNHu/1bDyjeD5Q==, tableContent=null), ArticleFig(id=1228369864709043169, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=图20, caption=
颗粒流失率变化曲线, figureFileSmall=CE4Ws33CYhjtlvCrko4fDQ==, figureFileBig=D3psloyUYNHu/1bDyjeD5Q==, tableContent=null), ArticleFig(id=1228369864792929251, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Table 1, caption=
Numerical model condition setting
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 埋深 | 漏点位置 |
| 1 | 1D/2D | 顶部 |
| 2 | 1D/2D | 腰部 |
| 3 | 1D/2D | 底部 |
), ArticleFig(id=1228369864897786854, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=表1, caption=
数值模型工况设置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 埋深 | 漏点位置 |
| 1 | 1D/2D | 顶部 |
| 2 | 1D/2D | 腰部 |
| 3 | 1D/2D | 底部 |
), ArticleFig(id=1228369864990061548, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Table 2, caption=
Summary of calibrated values of fine parameters for sandy soil layers
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| 细观参数 | 参数取值 |
| 颗粒密度/(kg·m-3) | 2 725 |
| 颗粒摩擦系数 | 0.3 |
| 黏聚力/kPa | 2.38 |
| 颗粒法向接触刚度/(N·m-1) | 1.00×108 |
| 颗粒切向接触刚度/(N·m-1) | 1.00×108 |
| 阻尼系数 | 0.70 |
| 孔隙率 | 0.18 |
| 墙体法向接触刚度/(N·m-1) | 1.00×108 |
| 墙体切向接触刚度/(N·m-1) | 1.00×108 |
| 墙体摩擦系数 | 0.5 |
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砂土层细观参数标定值汇总
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| 细观参数 | 参数取值 |
| 颗粒密度/(kg·m-3) | 2 725 |
| 颗粒摩擦系数 | 0.3 |
| 黏聚力/kPa | 2.38 |
| 颗粒法向接触刚度/(N·m-1) | 1.00×108 |
| 颗粒切向接触刚度/(N·m-1) | 1.00×108 |
| 阻尼系数 | 0.70 |
| 孔隙率 | 0.18 |
| 墙体法向接触刚度/(N·m-1) | 1.00×108 |
| 墙体切向接触刚度/(N·m-1) | 1.00×108 |
| 墙体摩擦系数 | 0.5 |
), ArticleFig(id=1228369865212359666, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Table 3, caption=
Summary of fine parameters of road surface layer, road base and soil base layer
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| 参数名称 | 路面层 | 路基层 | 土基层 |
| 颗粒半径/m | 0.035 | 0.04 | 0.03~0.05 |
| 颗粒密度/(kg·m-3) | 2 400 | 2 135 | 2 000 |
| 颗粒摩擦系数 | 0.7 | 0.54 | 0.3 |
颗粒法向/切向接触刚度/ (N·m-1) | 5×109 | 4.5×108 | 8.1×107 |
| 接触连接法向/切向强度/N | 1.7×109 | 6.5×109 | 8.4×107 |
), ArticleFig(id=1228369865342383097, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=表3, caption=
路面层、路基层和土基层细观参数汇总表
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| 参数名称 | 路面层 | 路基层 | 土基层 |
| 颗粒半径/m | 0.035 | 0.04 | 0.03~0.05 |
| 颗粒密度/(kg·m-3) | 2 400 | 2 135 | 2 000 |
| 颗粒摩擦系数 | 0.7 | 0.54 | 0.3 |
颗粒法向/切向接触刚度/ (N·m-1) | 5×109 | 4.5×108 | 8.1×107 |
| 接触连接法向/切向强度/N | 1.7×109 | 6.5×109 | 8.4×107 |
), ArticleFig(id=1228369865455629307, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=EN, label=Table 4, caption=
Summary of ellipse parameters for different burial depth conditions
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| 参数名称 | 埋深1D | 埋深2D |
| as | bs | as | bs |
| 顶部渗漏 | 1.75D | 1.38D | 2.88D | 1.88D |
| 腰部渗漏 | 1.88D | 1.63D | 3.00D | 2.13D |
| 底部渗漏 | 3.50D | 2.50D | 2.13D | 2.63D |
), ArticleFig(id=1228369865589846018, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279672568480595, language=CN, label=表4, caption=
不同埋深工况下椭圆参数汇总表
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| 参数名称 | 埋深1D | 埋深2D |
| as | bs | as | bs |
| 顶部渗漏 | 1.75D | 1.38D | 2.88D | 1.88D |
| 腰部渗漏 | 1.88D | 1.63D | 3.00D | 2.13D |
| 底部渗漏 | 3.50D | 2.50D | 2.13D | 2.63D |
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