Run-out simulation of rock avalanches using a depth-averaged model considering the distance and velocity related frictional weakening effect: Run-out simulation of rock avalanches using a depth-averaged model: Li et al.
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| Title: | Run-out simulation of rock avalanches using a depth-averaged model considering the distance and velocity related frictional weakening effect: Run-out simulation of rock avalanches using a depth-averaged model: Li et al. |
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| Authors: | Li, Jiheng1,2 (AUTHOR), Shen, Wei1,2,3 (AUTHOR) wei.shen@chd.edu.cn, Li, Tonglu1,2 (AUTHOR), Li, Ping1,2 (AUTHOR), Yuan, Sifan1,2 (AUTHOR), Sun, Xinglai1,2 (AUTHOR), Chen, Yuqi1,2 (AUTHOR), Peng, Jianbing1,3 (AUTHOR) |
| Source: | Landslides. May2025, Vol. 22 Issue 5, p1647-1663. 17p. |
| Subjects: | Rockslides, Critical velocity, Acceleration (Mechanics), Range of motion of joints, Field research, Landslides |
| Abstract: | The depth-averaged models (DAM) are widely used numerical models for the run-out simulation of flow-like mass movements such as rock avalanches. A constant friction coefficient is usually adopted in the current DAM to consider the friction dissipation of rock avalanches. However, these models cannot reflect the frictional weakening phenomenon of rock avalanches due to factors such as the fragmentation of the rock mass and the thermal effect at the sliding bed. To overcome the limitations of traditional depth-averaged landslide models (DAM), a DAM considering both the velocity-dependent and distance-dependent frictional weakening was developed in this study. The model was validated by two benchmark cases, before being utilized to analyze a real catastrophic rock avalanche that occurred in the Yanjiagou gully, Shanyang County, Shaanxi Province of China. The simulation results of the two benchmark cases, the ideal flume test and a flume experiment of sand flow, agree well with the analytical solutions and the experimental results, respectively. In the simulation of the Yanjiagou rock avalanche, we discussed the impact of the slip-weakening distance (Dc) and the critical sliding velocity (Vc) on the run-out process of the rock avalanche. The results indicate that the parameter Dc mainly affects the acceleration process at landslide initiation, while the parameter Vc primarily influences the average velocity of the landslide motion. In the condition of a larger Dc and a smaller Vc, the distribution of the landslide deposit thickness becomes more uniform. Furthermore, by comparing the simulation results of the friction-weakening model with those of the constant friction coefficient model and the friction-strengthening model (µ(I) rheology), it is shown that, without considering frictional weakening, the initiation of the landslide is overly diffuse, severely overestimating the range of landslide motion. After adopting the friction-weakening model, the range of landslide motion and the thickness of the landslide deposit are more consistent with the results of field investigations. The frictional weakening DAM improves the simulation accuracy of rock avalanches. [ABSTRACT FROM AUTHOR] |
| Copyright of Landslides 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.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 184450928 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Run-out simulation of rock avalanches using a depth-averaged model considering the distance and velocity related frictional weakening effect: Run-out simulation of rock avalanches using a depth-averaged model: Li et al. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Jiheng%22">Li, Jiheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shen%2C+Wei%22">Shen, Wei</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> wei.shen@chd.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Tonglu%22">Li, Tonglu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Ping%22">Li, Ping</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yuan%2C+Sifan%22">Yuan, Sifan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Xinglai%22">Sun, Xinglai</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Yuqi%22">Chen, Yuqi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Peng%2C+Jianbing%22">Peng, Jianbing</searchLink><relatesTo>1,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Landslides%22">Landslides</searchLink>. May2025, Vol. 22 Issue 5, p1647-1663. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Rockslides%22">Rockslides</searchLink><br /><searchLink fieldCode="DE" term="%22Critical+velocity%22">Critical velocity</searchLink><br /><searchLink fieldCode="DE" term="%22Acceleration+%28Mechanics%29%22">Acceleration (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Range+of+motion+of+joints%22">Range of motion of joints</searchLink><br /><searchLink fieldCode="DE" term="%22Field+research%22">Field research</searchLink><br /><searchLink fieldCode="DE" term="%22Landslides%22">Landslides</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The depth-averaged models (DAM) are widely used numerical models for the run-out simulation of flow-like mass movements such as rock avalanches. A constant friction coefficient is usually adopted in the current DAM to consider the friction dissipation of rock avalanches. However, these models cannot reflect the frictional weakening phenomenon of rock avalanches due to factors such as the fragmentation of the rock mass and the thermal effect at the sliding bed. To overcome the limitations of traditional depth-averaged landslide models (DAM), a DAM considering both the velocity-dependent and distance-dependent frictional weakening was developed in this study. The model was validated by two benchmark cases, before being utilized to analyze a real catastrophic rock avalanche that occurred in the Yanjiagou gully, Shanyang County, Shaanxi Province of China. The simulation results of the two benchmark cases, the ideal flume test and a flume experiment of sand flow, agree well with the analytical solutions and the experimental results, respectively. In the simulation of the Yanjiagou rock avalanche, we discussed the impact of the slip-weakening distance (Dc) and the critical sliding velocity (Vc) on the run-out process of the rock avalanche. The results indicate that the parameter Dc mainly affects the acceleration process at landslide initiation, while the parameter Vc primarily influences the average velocity of the landslide motion. In the condition of a larger Dc and a smaller Vc, the distribution of the landslide deposit thickness becomes more uniform. Furthermore, by comparing the simulation results of the friction-weakening model with those of the constant friction coefficient model and the friction-strengthening model (µ(I) rheology), it is shown that, without considering frictional weakening, the initiation of the landslide is overly diffuse, severely overestimating the range of landslide motion. After adopting the friction-weakening model, the range of landslide motion and the thickness of the landslide deposit are more consistent with the results of field investigations. The frictional weakening DAM improves the simulation accuracy of rock avalanches. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Landslides 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/s10346-024-02440-4 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 1647 Subjects: – SubjectFull: Rockslides Type: general – SubjectFull: Critical velocity Type: general – SubjectFull: Acceleration (Mechanics) Type: general – SubjectFull: Range of motion of joints Type: general – SubjectFull: Field research Type: general – SubjectFull: Landslides Type: general Titles: – TitleFull: Run-out simulation of rock avalanches using a depth-averaged model considering the distance and velocity related frictional weakening effect: Run-out simulation of rock avalanches using a depth-averaged model: Li et al. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Jiheng – PersonEntity: Name: NameFull: Shen, Wei – PersonEntity: Name: NameFull: Li, Tonglu – PersonEntity: Name: NameFull: Li, Ping – PersonEntity: Name: NameFull: Yuan, Sifan – PersonEntity: Name: NameFull: Sun, Xinglai – PersonEntity: Name: NameFull: Chen, Yuqi – PersonEntity: Name: NameFull: Peng, Jianbing IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 1612510X Numbering: – Type: volume Value: 22 – Type: issue Value: 5 Titles: – TitleFull: Landslides Type: main |
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