Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage
Critical shear stress and erosion rate are two key factors for the prediction of the incipient motion of sediment and the transport of sediment. Seabed seepage can significantly alter the pore pressure gradient within the soil and the hydrodynamics around the surface of the seabed, further affecting...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/13/1/152 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832588177775263744 |
|---|---|
| author | Yuhuan Zhang Lin Cui Dong-Sheng Jeng Zheng Wang Hualing Zhai |
| author_facet | Yuhuan Zhang Lin Cui Dong-Sheng Jeng Zheng Wang Hualing Zhai |
| author_sort | Yuhuan Zhang |
| collection | DOAJ |
| description | Critical shear stress and erosion rate are two key factors for the prediction of the incipient motion of sediment and the transport of sediment. Seabed seepage can significantly alter the pore pressure gradient within the soil and the hydrodynamics around the surface of the seabed, further affecting erosion processes. Previous studies attempted to theoretically clarify the effect of the seepage force on sediment incipient motion. In this study, a newly designed erosion–seepage system (ESS) that considers the effect of seepage under steady or oscillatory flow is used to simulate the erosion process. Through the designed ESS, the erosion height per unit time was measured directly on the Yellow River sand, and the upward seepage force was applied at the bottom of the soil sample in the process. Then, the relationship between the erosion rate and seepage was established.The experimental results show that upward seepage reduces the critical shear stress of the sand bed and increases the erosion rate of the soils under both steady flow and oscillatory flow conditions. The erosion coefficients in the erosion models decrease with increasing seepage gradient. The effect of seepage on erosion is more obvious when the flow velocity of the steady stream is large, while the effect of seepage on erosion is relatively small under the oscillatory state with a shorter period. However, when violent erosion of soil samples occurs, seepage under both flow conditions greatly increases the erosion rate. |
| format | Article |
| id | doaj-art-0c4a7da152fe4528a9b5cb6c370db216 |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-0c4a7da152fe4528a9b5cb6c370db2162025-01-24T13:37:03ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-01-0113115210.3390/jmse13010152Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with SeepageYuhuan Zhang0Lin Cui1Dong-Sheng Jeng2Zheng Wang3Hualing Zhai4College of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, ChinaCritical shear stress and erosion rate are two key factors for the prediction of the incipient motion of sediment and the transport of sediment. Seabed seepage can significantly alter the pore pressure gradient within the soil and the hydrodynamics around the surface of the seabed, further affecting erosion processes. Previous studies attempted to theoretically clarify the effect of the seepage force on sediment incipient motion. In this study, a newly designed erosion–seepage system (ESS) that considers the effect of seepage under steady or oscillatory flow is used to simulate the erosion process. Through the designed ESS, the erosion height per unit time was measured directly on the Yellow River sand, and the upward seepage force was applied at the bottom of the soil sample in the process. Then, the relationship between the erosion rate and seepage was established.The experimental results show that upward seepage reduces the critical shear stress of the sand bed and increases the erosion rate of the soils under both steady flow and oscillatory flow conditions. The erosion coefficients in the erosion models decrease with increasing seepage gradient. The effect of seepage on erosion is more obvious when the flow velocity of the steady stream is large, while the effect of seepage on erosion is relatively small under the oscillatory state with a shorter period. However, when violent erosion of soil samples occurs, seepage under both flow conditions greatly increases the erosion rate.https://www.mdpi.com/2077-1312/13/1/152sediment incipient motioncritical shear stresserosion rateerosion–seepage systemseepage |
| spellingShingle | Yuhuan Zhang Lin Cui Dong-Sheng Jeng Zheng Wang Hualing Zhai Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage Journal of Marine Science and Engineering sediment incipient motion critical shear stress erosion rate erosion–seepage system seepage |
| title | Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage |
| title_full | Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage |
| title_fullStr | Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage |
| title_full_unstemmed | Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage |
| title_short | Erosion–Seepage System (ESS) for Flow-Induced Soil Erosion Rate with Seepage |
| title_sort | erosion seepage system ess for flow induced soil erosion rate with seepage |
| topic | sediment incipient motion critical shear stress erosion rate erosion–seepage system seepage |
| url | https://www.mdpi.com/2077-1312/13/1/152 |
| work_keys_str_mv | AT yuhuanzhang erosionseepagesystemessforflowinducedsoilerosionratewithseepage AT lincui erosionseepagesystemessforflowinducedsoilerosionratewithseepage AT dongshengjeng erosionseepagesystemessforflowinducedsoilerosionratewithseepage AT zhengwang erosionseepagesystemessforflowinducedsoilerosionratewithseepage AT hualingzhai erosionseepagesystemessforflowinducedsoilerosionratewithseepage |