Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method
To clearly realize the dynamic process as well as the dynamic fragmentation behavior of a long run-out rockslide, a novel numerical method for landslide simulation of the coupled finite-discrete element method (FDEM) was applied and the Jichang rockslide was used as a case. The calibrated simulation...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-12-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/15/24/5708 |
| _version_ | 1797379499962138624 |
|---|---|
| author | Chun Zhu Zhipeng Li Yiding Bao Po Ning Xin Zhou Meng Wang Hong Wang Wenbing Shi Bingbing Chen |
| author_facet | Chun Zhu Zhipeng Li Yiding Bao Po Ning Xin Zhou Meng Wang Hong Wang Wenbing Shi Bingbing Chen |
| author_sort | Chun Zhu |
| collection | DOAJ |
| description | To clearly realize the dynamic process as well as the dynamic fragmentation behavior of a long run-out rockslide, a novel numerical method for landslide simulation of the coupled finite-discrete element method (FDEM) was applied and the Jichang rockslide was used as a case. The calibrated simulation result of the FDEM in a rockslide deposit corresponds well with the real rockslide deposit. The main run-out process of the rockslide lasts for 75 s and can be divided into acceleration and deceleration stages, which last for 33 s and 42 s, respectively. The maximum overall rockslide movement speed is 35 m/s while the partial sliding mass reaches 45 m/s. The fracturing, fragmentation, and disintegration processes of the sliding mass can be clearly observed from the dynamic scenarios. Fracture energy generated by rock fracturing constantly increases with time in a non-linear form. Of the total fracture energy, 54% is released in the initial 5 s because of fracturing, and 39% of the total fracture energy is released because of fragmentation and disintegration in the last 35 s. The accumulated friction energy increases in the whole run-out process, and its magnitude is much greater than the kinetic energy and fracture energy of the sliding mass. |
| first_indexed | 2024-03-08T20:24:10Z |
| format | Article |
| id | doaj.art-754f233f516e49049bbb87183f05195c |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-08T20:24:10Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-754f233f516e49049bbb87183f05195c2023-12-22T14:39:06ZengMDPI AGRemote Sensing2072-42922023-12-011524570810.3390/rs15245708Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element MethodChun Zhu0Zhipeng Li1Yiding Bao2Po Ning3Xin Zhou4Meng Wang5Hong Wang6Wenbing Shi7Bingbing Chen8School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaKey Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, ChinaKey Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, ChinaFailure Mechanics and Engineering Disaster Prevention, Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, ChinaCollege of Civil Engineering, Guizhou University, Guiyang 550025, ChinaCollege of Civil Engineering, Guizhou University, Guiyang 550025, ChinaZienkiewicz Institute for Modelling, Data and AI, Faculty of Science and Engineering, Swansea University, Swansea SA1 8EN, UKTo clearly realize the dynamic process as well as the dynamic fragmentation behavior of a long run-out rockslide, a novel numerical method for landslide simulation of the coupled finite-discrete element method (FDEM) was applied and the Jichang rockslide was used as a case. The calibrated simulation result of the FDEM in a rockslide deposit corresponds well with the real rockslide deposit. The main run-out process of the rockslide lasts for 75 s and can be divided into acceleration and deceleration stages, which last for 33 s and 42 s, respectively. The maximum overall rockslide movement speed is 35 m/s while the partial sliding mass reaches 45 m/s. The fracturing, fragmentation, and disintegration processes of the sliding mass can be clearly observed from the dynamic scenarios. Fracture energy generated by rock fracturing constantly increases with time in a non-linear form. Of the total fracture energy, 54% is released in the initial 5 s because of fracturing, and 39% of the total fracture energy is released because of fragmentation and disintegration in the last 35 s. The accumulated friction energy increases in the whole run-out process, and its magnitude is much greater than the kinetic energy and fracture energy of the sliding mass.https://www.mdpi.com/2072-4292/15/24/5708long run-out rockslidefinite-discrete element methoddynamic processnumerical simulation |
| spellingShingle | Chun Zhu Zhipeng Li Yiding Bao Po Ning Xin Zhou Meng Wang Hong Wang Wenbing Shi Bingbing Chen Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method Remote Sensing long run-out rockslide finite-discrete element method dynamic process numerical simulation |
| title | Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method |
| title_full | Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method |
| title_fullStr | Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method |
| title_full_unstemmed | Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method |
| title_short | Dynamic Analysis of a Long Run-Out Rockslide Considering Dynamic Fragmentation Behavior in Jichang Town: Insights from the Three-Dimensional Coupled Finite-Discrete Element Method |
| title_sort | dynamic analysis of a long run out rockslide considering dynamic fragmentation behavior in jichang town insights from the three dimensional coupled finite discrete element method |
| topic | long run-out rockslide finite-discrete element method dynamic process numerical simulation |
| url | https://www.mdpi.com/2072-4292/15/24/5708 |
| work_keys_str_mv | AT chunzhu dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT zhipengli dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT yidingbao dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT poning dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT xinzhou dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT mengwang dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT hongwang dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT wenbingshi dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod AT bingbingchen dynamicanalysisofalongrunoutrockslideconsideringdynamicfragmentationbehaviorinjichangtowninsightsfromthethreedimensionalcoupledfinitediscreteelementmethod |