Particle-density segregation of rock–ice avalanche
Rock-ice avalanches occurring in cold high-mountains have super mobility and enormous destructive potential. They consist mainly of ice and gravel with different physical properties, particularly density, leading to segregation and impacting the flow characteristics. However, how key factors affect...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0249871 |
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| author | Zhiping Sun Shentian Li Jinkun Dong Zhibo Dong Siyou Xiao |
| author_facet | Zhiping Sun Shentian Li Jinkun Dong Zhibo Dong Siyou Xiao |
| author_sort | Zhiping Sun |
| collection | DOAJ |
| description | Rock-ice avalanches occurring in cold high-mountains have super mobility and enormous destructive potential. They consist mainly of ice and gravel with different physical properties, particularly density, leading to segregation and impacting the flow characteristics. However, how key factors affect segregation is still poorly understood. A series of simulations based on the discrete element method were conducted to quantify the effect of channel slope, ice content, and initial arrangement of ice-gravel on the segregation of rock-ice granular flow. Results show that a smaller slope and lower ice content promote density segregation of the rock-ice granular flow, allowing segregation to proceed more thoroughly, but interestingly, the initial arrangement of ice-gravel does not affect its final segregation state. This work provides insights into the effect of internal and external factors on the density difference-driven segregation for multi-component mixtures typified by rock-ice granular flow. |
| format | Article |
| id | doaj-art-55600536296e4a7b87c74be97d9e7acf |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-55600536296e4a7b87c74be97d9e7acf2025-02-03T16:40:42ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015217015217-1210.1063/5.0249871Particle-density segregation of rock–ice avalancheZhiping Sun0Shentian Li1Jinkun Dong2Zhibo Dong3Siyou Xiao4College of Civil and Architectural Engineering, Liaoning University of Technology, Jinzhou City, Liaoning Province, ChinaCollege of Civil and Architectural Engineering, Liaoning University of Technology, Jinzhou City, Liaoning Province, ChinaCollege of Civil and Architectural Engineering, Liaoning University of Technology, Jinzhou City, Liaoning Province, ChinaCollege of Civil and Architectural Engineering, Liaoning University of Technology, Jinzhou City, Liaoning Province, ChinaSchool of Civil Engineering and Urban Planning, Liupanshui Normal University, Liupanshui City, Guizhou Province, ChinaRock-ice avalanches occurring in cold high-mountains have super mobility and enormous destructive potential. They consist mainly of ice and gravel with different physical properties, particularly density, leading to segregation and impacting the flow characteristics. However, how key factors affect segregation is still poorly understood. A series of simulations based on the discrete element method were conducted to quantify the effect of channel slope, ice content, and initial arrangement of ice-gravel on the segregation of rock-ice granular flow. Results show that a smaller slope and lower ice content promote density segregation of the rock-ice granular flow, allowing segregation to proceed more thoroughly, but interestingly, the initial arrangement of ice-gravel does not affect its final segregation state. This work provides insights into the effect of internal and external factors on the density difference-driven segregation for multi-component mixtures typified by rock-ice granular flow.http://dx.doi.org/10.1063/5.0249871 |
| spellingShingle | Zhiping Sun Shentian Li Jinkun Dong Zhibo Dong Siyou Xiao Particle-density segregation of rock–ice avalanche AIP Advances |
| title | Particle-density segregation of rock–ice avalanche |
| title_full | Particle-density segregation of rock–ice avalanche |
| title_fullStr | Particle-density segregation of rock–ice avalanche |
| title_full_unstemmed | Particle-density segregation of rock–ice avalanche |
| title_short | Particle-density segregation of rock–ice avalanche |
| title_sort | particle density segregation of rock ice avalanche |
| url | http://dx.doi.org/10.1063/5.0249871 |
| work_keys_str_mv | AT zhipingsun particledensitysegregationofrockiceavalanche AT shentianli particledensitysegregationofrockiceavalanche AT jinkundong particledensitysegregationofrockiceavalanche AT zhibodong particledensitysegregationofrockiceavalanche AT siyouxiao particledensitysegregationofrockiceavalanche |