Interaction between Adjacent Soil-Arching Effect in Homogeneous Clay and the Corresponding Stability Analysis of Underground Voids: Insights from Trapdoor Modeling.
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| Title: | Interaction between Adjacent Soil-Arching Effect in Homogeneous Clay and the Corresponding Stability Analysis of Underground Voids: Insights from Trapdoor Modeling. |
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| Authors: | Fu, Xiang-Shen1 (AUTHOR) custfxs@hnu.edu.cn, Wang, Han-Lin2 (AUTHOR) wanghanlin@hnu.edu.cn, Chen, Ren-Peng2 (AUTHOR) chenrp@hnu.edu.cn, Ma, Xiong-Ying1 (AUTHOR) maxying@hnu.edu.cn, Meng, Fan-yan3 (AUTHOR) fymeng@hnu.edu.cn, Liu, Qi-Wei4 (AUTHOR) liuqw@hnu.edu.cn |
| Source: | International Journal of Geomechanics. Aug2025, Vol. 25 Issue 8, p1-12. 12p. |
| Subjects: | Safety factor in engineering, Clay, Surcharges, Soils, Equations |
| Abstract: | Nature- and human-induced underground voids appear frequently, posing threats to the performance and stability of infrastructures. The interaction between underground voids in clay lacks attention. This study employed the finite-element limit analysis to conduct a series of two-dimensional twin-trapdoor tests in homogeneous clay. Using twin-trapdoor modeling as an alternative approach to explicit modeling, the interaction of adjacent soil arching effect in the case of dual underground voids was identified by analyzing the soil arching ratio, stress redistribution, and shear bands. Furthermore, the interaction of adjacent soil arching effect is considered to influence the stability of the twin trapdoor, which is quantified by the dimensionless stability factor of the twin trapdoor. The interaction between twin trapdoors vanished with the increase of spacing between trapdoors. A twin trapdoor with a longer normalized fill height requires larger normalized spacing between trapdoors to eliminate the interaction. A prediction expression for the stability factor of the twin trapdoor in homogeneous clays considering the interaction between the twin trapdoors is proposed to define the stability envelope. From that, simple equations for calculating the collapse surcharge, the required supporting pressure, and the factor of safety of twin-trapdoor problems are also presented. The proposed equations provide guidelines for the stability evaluation and initial design of relevant infrastructures considering the interaction of adjacent underground voids. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Geomechanics is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 185964882 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Interaction between Adjacent Soil-Arching Effect in Homogeneous Clay and the Corresponding Stability Analysis of Underground Voids: Insights from Trapdoor Modeling. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fu%2C+Xiang-Shen%22">Fu, Xiang-Shen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> custfxs@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Han-Lin%22">Wang, Han-Lin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wanghanlin@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Ren-Peng%22">Chen, Ren-Peng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> chenrp@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Xiong-Ying%22">Ma, Xiong-Ying</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> maxying@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Meng%2C+Fan-yan%22">Meng, Fan-yan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> fymeng@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Qi-Wei%22">Liu, Qi-Wei</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> liuqw@hnu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Geomechanics%22">International Journal of Geomechanics</searchLink>. Aug2025, Vol. 25 Issue 8, p1-12. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Safety+factor+in+engineering%22">Safety factor in engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Clay%22">Clay</searchLink><br /><searchLink fieldCode="DE" term="%22Surcharges%22">Surcharges</searchLink><br /><searchLink fieldCode="DE" term="%22Soils%22">Soils</searchLink><br /><searchLink fieldCode="DE" term="%22Equations%22">Equations</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Nature- and human-induced underground voids appear frequently, posing threats to the performance and stability of infrastructures. The interaction between underground voids in clay lacks attention. This study employed the finite-element limit analysis to conduct a series of two-dimensional twin-trapdoor tests in homogeneous clay. Using twin-trapdoor modeling as an alternative approach to explicit modeling, the interaction of adjacent soil arching effect in the case of dual underground voids was identified by analyzing the soil arching ratio, stress redistribution, and shear bands. Furthermore, the interaction of adjacent soil arching effect is considered to influence the stability of the twin trapdoor, which is quantified by the dimensionless stability factor of the twin trapdoor. The interaction between twin trapdoors vanished with the increase of spacing between trapdoors. A twin trapdoor with a longer normalized fill height requires larger normalized spacing between trapdoors to eliminate the interaction. A prediction expression for the stability factor of the twin trapdoor in homogeneous clays considering the interaction between the twin trapdoors is proposed to define the stability envelope. From that, simple equations for calculating the collapse surcharge, the required supporting pressure, and the factor of safety of twin-trapdoor problems are also presented. The proposed equations provide guidelines for the stability evaluation and initial design of relevant infrastructures considering the interaction of adjacent underground voids. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Geomechanics is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/IJGNAI.GMENG-9781 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Subjects: – SubjectFull: Safety factor in engineering Type: general – SubjectFull: Clay Type: general – SubjectFull: Surcharges Type: general – SubjectFull: Soils Type: general – SubjectFull: Equations Type: general Titles: – TitleFull: Interaction between Adjacent Soil-Arching Effect in Homogeneous Clay and the Corresponding Stability Analysis of Underground Voids: Insights from Trapdoor Modeling. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fu, Xiang-Shen – PersonEntity: Name: NameFull: Wang, Han-Lin – PersonEntity: Name: NameFull: Chen, Ren-Peng – PersonEntity: Name: NameFull: Ma, Xiong-Ying – PersonEntity: Name: NameFull: Meng, Fan-yan – PersonEntity: Name: NameFull: Liu, Qi-Wei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 15323641 Numbering: – Type: volume Value: 25 – Type: issue Value: 8 Titles: – TitleFull: International Journal of Geomechanics Type: main |
| ResultId | 1 |
