Article(id=1149670640585719950, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1149670639897854094, articleNumber=1671-1807(2025)10-0001-08, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734969600000, receivedDateStr=2024-12-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1752032440562, onlineDateStr=2025-07-09, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752032440562, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752032440562, creator=13701087609, updateTime=1752032440562, updator=13701087609, issue=Issue{id=1149670639897854094, tenantId=1146029695717560320, journalId=1146123222451335185, year='2025', volume='25', issue='10', pageStart='1', pageEnd='377', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752032440399, creator=13701087609, updateTime=1756780756355, updator=15831073675, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1169586520596947842, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1149670639897854094, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1169586520596947843, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1149670639897854094, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1, endPage=8, ext={EN=ArticleExt(id=1151876674712335264, articleId=1149670640585719950, tenantId=1146029695717560320, journalId=1146123222451335185, language=EN, title=The Development Mechanism of Vertical Joints in Loess and Its Appropriate Calculating Method, columnId=1151876674645226399, journalTitle=Science Technology and Industry, columnName=Technology Innovation, runingTitle=null, highlight=null, articleAbstract=
Vertical joints are a key characteristic of loess, contributing to its strong anisotropies. This factor must be taken into consideration in engineering activities. The development mechanism of vertical joints in loess at great depths under the influence of dry-wet cycles was investigated, focusing on a highway tunnel passing through a loess irrigation area. The appropriate method was also explored for calculating this phenomenon. Through a comprehensive analysis of diffraction patterns and scanning electron microscopy, it was proposed that soluble salts in the loess play a key role in cementation. A significant amount of soluble salts dissolved in water and migrated downward during dry-wet cycles, disrupting the cementation of the loess. This results in a shift from point-to-point contact between soil particles to point-to-surface or surface-to-surface contact. Additionally, the recrystallization after migration leads to the development and expansion of fine pores in the loess. The continued expansion of the joint fracture volume also creates a pathway for further downward penetration of the water flow. This cyclical interaction between loess and water will facilitate the development of joint fractures at greater depths. The surface cracks and sinkholes in underground engineering activities carried out in similar strata are the visible signs of the progressive development of internal cracks in loess from the subsurface to the surface. The utilization of random joint mesh DNF in finite element software to convert joints into discrete, planar, and finite-size elements is a viable approach for representing the anisotropy of loess in calculations. It also introduces a new concept for the equivalent treatment of discontinuous problems using the continuous mechanics method.
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垂直节理是构成黄土的主要特征之一,其赋予黄土强烈的各向异性,是工程活动中不得不考虑的影响因素。以穿越黄土灌溉区的某公路隧道为依托,研究干湿循环作用下黄土垂直节理向深部发展的机理及其在计算中的合理表述。通过衍射分析法及扫面电镜法的综合分析,提出黄土中的可溶盐是构成胶结体的关键部分,干湿循环过程中大量的易溶盐溶于水并向下迁移,破坏了黄土的胶结作用,使得土颗粒间的点-点接触变为点-面接触或面-面接触,同时迁移后的重结晶作用导致黄土内部细小的孔隙拉伸、发育、扩大、串联。循环往复的黄土-水相互作用会促使节理裂隙向深部发育,发育深度甚至可达十数米至隧道埋深,传统的有限元模拟手段无法表现这一破坏过程对隧道产生的影响,在有限元软件中采用随机节理网格(DNF)将节理等效为离散的、平面的和有限尺寸的单元,是在计算中表述黄土各向异性的更为可行方案。
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李涛(1991—),男,甘肃兰州人,硕士,工程师,研究方向为地下工程、岩土工程;
张建(1987—),男,山东汶上人,博士,高级工程师,研究方向为隧道工程;
王永刚(1979—),男,山东诸城人,博士,正高级工程师,研究方向为隧道工程、岩土工程;
孙纬宇(1991—),男,甘肃天水人,博士,副教授,研究方向为地下工程、岩土工程;
吕硕(1990—),男,甘肃白银人,硕士,高级工程师,研究方向为隧道工程;
许政东(1996—),男,甘肃天水人,工程师,研究方向为地下工程、岩土工程。
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王永刚(1979—),男,山东诸城人,博士,正高级工程师,研究方向为隧道工程、岩土工程;
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王永刚(1979—),男,山东诸城人,博士,正高级工程师,研究方向为隧道工程、岩土工程;
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孙纬宇(1991—),男,甘肃天水人,博士,副教授,研究方向为地下工程、岩土工程;
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许政东(1996—),男,甘肃天水人,工程师,研究方向为地下工程、岩土工程。
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原状黄土实验后微观结构特性, figureFileSmall=ycerHcB+SYHvZSBaW8pJ2Q==, figureFileBig=xGoQmCVaaibn6oznbda94g==, tableContent=null), ArticleFig(id=1173173865376268327, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=gMjyHblJCe4K1XCqCncg6Q==, figureFileBig=SNaVoEOzJBjrkZDPfygQfw==, tableContent=null), ArticleFig(id=1173173865430794280, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图7, caption=
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随机节理网格计算模型, figureFileSmall=01Frs1T8Q0UCNOA+DPPSLA==, figureFileBig=mM+p83XpmeZVLT3W4XaM1Q==, tableContent=null), ArticleFig(id=1173173867511169067, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=jIKk6X/chM0ei5yNZThKcw==, figureFileBig=vIF5F+kOVSyVKItoG5BNeg==, tableContent=null), ArticleFig(id=1173173867578277932, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图9, caption=
三轴压缩试验结果, figureFileSmall=jIKk6X/chM0ei5yNZThKcw==, figureFileBig=vIF5F+kOVSyVKItoG5BNeg==, tableContent=null), ArticleFig(id=1173173867653775405, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=GkRBZj8gQuFdY1HTQqwSJg==, figureFileBig=+hFDsbWb2dlT7DpT18jvqQ==, tableContent=null), ArticleFig(id=1173173867725078574, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图10, caption=
数值试验设计, figureFileSmall=GkRBZj8gQuFdY1HTQqwSJg==, figureFileBig=+hFDsbWb2dlT7DpT18jvqQ==, tableContent=null), ArticleFig(id=1173173867804770351, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=ggVwKJBcSt0pcrd1PABPLw==, figureFileBig=WfAfKETZNdO9OvvtfWWChA==, tableContent=null), ArticleFig(id=1173173867859296304, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图11, caption=
垂直节理发育20 m时最大剪应变增量, figureFileSmall=ggVwKJBcSt0pcrd1PABPLw==, figureFileBig=WfAfKETZNdO9OvvtfWWChA==, tableContent=null), ArticleFig(id=1173173867918016561, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=vHa8/AX9p4XsFF6kPmGZRw==, figureFileBig=2VcVYe9sGF4573XRl2vE2g==, tableContent=null), ArticleFig(id=1173173867980931122, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图12, caption=
垂直节理发育25 m时最大剪应变增量, figureFileSmall=vHa8/AX9p4XsFF6kPmGZRw==, figureFileBig=2VcVYe9sGF4573XRl2vE2g==, tableContent=null), ArticleFig(id=1173173868056428595, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=/PRssVwsmLuYeO+s3zyjSQ==, figureFileBig=xG9hvPEMMINKs/E3m3gyMg==, tableContent=null), ArticleFig(id=1173173868127731764, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图13, caption=
垂直节理发育30 m时最大剪应变增量, figureFileSmall=/PRssVwsmLuYeO+s3zyjSQ==, figureFileBig=xG9hvPEMMINKs/E3m3gyMg==, tableContent=null), ArticleFig(id=1173173868199034933, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=AMV0T7qcrFWRwzSyVkyypA==, figureFileBig=4Xbj29Plakx/cmGVgDsIpA==, tableContent=null), ArticleFig(id=1173173868257755190, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=图14, caption=
不同垂直节理发育深度下裂缝发展示意图, figureFileSmall=AMV0T7qcrFWRwzSyVkyypA==, figureFileBig=4Xbj29Plakx/cmGVgDsIpA==, tableContent=null), ArticleFig(id=1173173868320669751, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 成分 | 占比/% | 成分 | 占比/% |
| SiO2 | 58.82 | ZrO2 | 0.039 8 |
| Al2O3 | 15.55 | SrO | 0.037 6 |
| CaO | 11.43 | ZnO | 0.017 8 |
| Fe2O3 | 4.76 | V2O5 | 0.016 1 |
| MgO | 3.38 | Rb2O | 0.012 2 |
| K2O | 2.58 | Ag2O | 0.010 4 |
| Na2O | 1.76 | Cr2O3 | 0.010 2 |
| TiO2 | 0.67 | NiO | 0.006 8 |
| SO3 | 0.39 | Y2O3 | 0.004 1 |
| P2O5 | 0.25 | CO3O4 | 0.003 4 |
| Cl | 0.11 | CuO | 0.003 3 |
| MnO | 0.09 | PbO | 0.002 1 |
| BaO | 0.04 | Ga2O3 | 0.001 9 |
), ArticleFig(id=1173173868387778616, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=CN, label=表1, caption=
研究区黄土X射线衍射分析成果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 成分 | 占比/% | 成分 | 占比/% |
| SiO2 | 58.82 | ZrO2 | 0.039 8 |
| Al2O3 | 15.55 | SrO | 0.037 6 |
| CaO | 11.43 | ZnO | 0.017 8 |
| Fe2O3 | 4.76 | V2O5 | 0.016 1 |
| MgO | 3.38 | Rb2O | 0.012 2 |
| K2O | 2.58 | Ag2O | 0.010 4 |
| Na2O | 1.76 | Cr2O3 | 0.010 2 |
| TiO2 | 0.67 | NiO | 0.006 8 |
| SO3 | 0.39 | Y2O3 | 0.004 1 |
| P2O5 | 0.25 | CO3O4 | 0.003 4 |
| Cl | 0.11 | CuO | 0.003 3 |
| MnO | 0.09 | PbO | 0.002 1 |
| BaO | 0.04 | Ga2O3 | 0.001 9 |
), ArticleFig(id=1173173868450693177, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1149670640585719950, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 黄土围岩 | 黏聚力/kPa | 內摩擦角/(°) | 泊松比 | 密度/(g·cm-3) |
| 62.23 | 30.06 | — | 1.77 |
| 黄土节理 | 法向刚度 Ka/MPa | 切向刚度 Ks/MPa | 黏聚力/ kPa | 内摩擦角/ (°) |
| 14 | 0.94 | 16.7 | 21 |
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物理力学参数表
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| 黄土围岩 | 黏聚力/kPa | 內摩擦角/(°) | 泊松比 | 密度/(g·cm-3) |
| 62.23 | 30.06 | — | 1.77 |
| 黄土节理 | 法向刚度 Ka/MPa | 切向刚度 Ks/MPa | 黏聚力/ kPa | 内摩擦角/ (°) |
| 14 | 0.94 | 16.7 | 21 |
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