Experiments and analytical method for landslide scarp caused by water-induced weakening of basal sliding zone.
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| Title: | Experiments and analytical method for landslide scarp caused by water-induced weakening of basal sliding zone. |
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| Authors: | Rao, Yunkang1 (AUTHOR), Chen, Huailin1 (AUTHOR), Yang, Tao1 (AUTHOR) yangtao@swjtu.cn, Zhang, Zhe1 (AUTHOR) |
| Source: | Acta Geotechnica. Sep2024, Vol. 19 Issue 9, p5873-5890. 18p. |
| Subjects: | Safety factor in engineering, Water slides, Soil moisture, Landslides, Angles, Soils |
| Abstract: | The aim of this study was to investigate the location of the landslide scarp surface induced by water weakening of sliding zone soil and to propose an analytical method to calculate the location. Eight laboratory model tests were performed to reproduce such landslide scarp surfaces and to demonstrate a relationship between the location of scarp surface and the weakened sliding zone. Based on this relationship and the Bishop interslice force assumption, an analytical method was proposed to calculate the locations of laboratory-reproduced scarp surfaces. Finally, the analytical method was applied to real landslide scarp surfaces to assess its practical effectiveness. The inclined angles of scarp surfaces observed in the eight tests exhibit a wide range, varying from 63.9° to 80.9°, due to differences in the properties of the weakened sliding zone and the sliding mass. The calculated results for all the laboratory and real scarp surfaces reveal only one valley point at which the local lowest safety factor (SF) reaches its lowest value. This lowest value indicates the critical scarp surface, thus demonstrating that the critical scarp surface is readily found by using the analytical method. The locations of the calculated critical scarp surfaces are broadly consistent with the measured or published locations of laboratory and real scarp surfaces. When applied to real landslide scarp surfaces, the analytical method locates the critical scarp surface by using available scarp outcrop data. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 179635765 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experiments and analytical method for landslide scarp caused by water-induced weakening of basal sliding zone. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Rao%2C+Yunkang%22">Rao, Yunkang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Huailin%22">Chen, Huailin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Tao%22">Yang, Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yangtao@swjtu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhe%22">Zhang, Zhe</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Sep2024, Vol. 19 Issue 9, p5873-5890. 18p. – 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="%22Water+slides%22">Water slides</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+moisture%22">Soil moisture</searchLink><br /><searchLink fieldCode="DE" term="%22Landslides%22">Landslides</searchLink><br /><searchLink fieldCode="DE" term="%22Angles%22">Angles</searchLink><br /><searchLink fieldCode="DE" term="%22Soils%22">Soils</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The aim of this study was to investigate the location of the landslide scarp surface induced by water weakening of sliding zone soil and to propose an analytical method to calculate the location. Eight laboratory model tests were performed to reproduce such landslide scarp surfaces and to demonstrate a relationship between the location of scarp surface and the weakened sliding zone. Based on this relationship and the Bishop interslice force assumption, an analytical method was proposed to calculate the locations of laboratory-reproduced scarp surfaces. Finally, the analytical method was applied to real landslide scarp surfaces to assess its practical effectiveness. The inclined angles of scarp surfaces observed in the eight tests exhibit a wide range, varying from 63.9° to 80.9°, due to differences in the properties of the weakened sliding zone and the sliding mass. The calculated results for all the laboratory and real scarp surfaces reveal only one valley point at which the local lowest safety factor (SF) reaches its lowest value. This lowest value indicates the critical scarp surface, thus demonstrating that the critical scarp surface is readily found by using the analytical method. The locations of the calculated critical scarp surfaces are broadly consistent with the measured or published locations of laboratory and real scarp surfaces. When applied to real landslide scarp surfaces, the analytical method locates the critical scarp surface by using available scarp outcrop data. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Geotechnica is the property of Springer Nature 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: 10.1007/s11440-024-02277-0 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 5873 Subjects: – SubjectFull: Safety factor in engineering Type: general – SubjectFull: Water slides Type: general – SubjectFull: Soil moisture Type: general – SubjectFull: Landslides Type: general – SubjectFull: Angles Type: general – SubjectFull: Soils Type: general Titles: – TitleFull: Experiments and analytical method for landslide scarp caused by water-induced weakening of basal sliding zone. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Rao, Yunkang – PersonEntity: Name: NameFull: Chen, Huailin – PersonEntity: Name: NameFull: Yang, Tao – PersonEntity: Name: NameFull: Zhang, Zhe IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 19 – Type: issue Value: 9 Titles: – TitleFull: Acta Geotechnica Type: main |
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