Laboratory characterization of soil internal erosion
The performance of subsequent structures which are intended to limit seepage, can be impacted by internal erosion of sensitive granular materials under fluid flow. Present days, suffusion research is the main area of study. Suffusion is the process by which coarser soil particles constructions allow...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2023
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| Online Access: | https://hdl.handle.net/10356/172818 |
| _version_ | 1811677100182077440 |
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| author | Deng, Hao |
| author2 | Fei Xunchang |
| author_facet | Fei Xunchang Deng, Hao |
| author_sort | Deng, Hao |
| collection | NTU |
| description | The performance of subsequent structures which are intended to limit seepage, can be impacted by internal erosion of sensitive granular materials under fluid flow. Present days, suffusion research is the main area of study. Suffusion is the process by which coarser soil particles constructions allow finer soil particles to be designated by seepage flow, often occurring in tandem with seepage flow over time. Through the application of suitable techniques for the preparation and placing of soil specimens together with proper saturation procedures, the feature of the internal erosion test would be examined and evaluated. After conducting a series of laboratory tests, we discovered that the internal clogging would happen in dense instances, that breaking the clogging would be more difficult in cases with a smaller void ratio, and that the permeability of the pre-clogging is larger than that of post-clogging. In contrast,
suffusion will happen in loose instances, and permeability will not change in either the pre-suffusion or within suffusion stage. In conditions with higher void ratios, soil specimens have better permeability and are more internally stable. In general, the critical value of hydraulic gradient and pressure which is equivalent to 2 and 3kPa respectively that don’t change when internal clogging of suffusion occurs whether is in dense or loose cases. |
| first_indexed | 2024-10-01T02:32:00Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/172818 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:32:00Z |
| publishDate | 2023 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1728182023-12-29T15:34:25Z Laboratory characterization of soil internal erosion Deng, Hao Fei Xunchang School of Civil and Environmental Engineering xcfei@ntu.edu.sg Engineering::Civil engineering::Geotechnical The performance of subsequent structures which are intended to limit seepage, can be impacted by internal erosion of sensitive granular materials under fluid flow. Present days, suffusion research is the main area of study. Suffusion is the process by which coarser soil particles constructions allow finer soil particles to be designated by seepage flow, often occurring in tandem with seepage flow over time. Through the application of suitable techniques for the preparation and placing of soil specimens together with proper saturation procedures, the feature of the internal erosion test would be examined and evaluated. After conducting a series of laboratory tests, we discovered that the internal clogging would happen in dense instances, that breaking the clogging would be more difficult in cases with a smaller void ratio, and that the permeability of the pre-clogging is larger than that of post-clogging. In contrast, suffusion will happen in loose instances, and permeability will not change in either the pre-suffusion or within suffusion stage. In conditions with higher void ratios, soil specimens have better permeability and are more internally stable. In general, the critical value of hydraulic gradient and pressure which is equivalent to 2 and 3kPa respectively that don’t change when internal clogging of suffusion occurs whether is in dense or loose cases. Bachelor of Engineering (Civil) 2023-12-26T05:56:11Z 2023-12-26T05:56:11Z 2023 Final Year Project (FYP) Deng, H. (2023). Laboratory characterization of soil internal erosion. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/172818 https://hdl.handle.net/10356/172818 en GE-14 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Civil engineering::Geotechnical Deng, Hao Laboratory characterization of soil internal erosion |
| title | Laboratory characterization of soil internal erosion |
| title_full | Laboratory characterization of soil internal erosion |
| title_fullStr | Laboratory characterization of soil internal erosion |
| title_full_unstemmed | Laboratory characterization of soil internal erosion |
| title_short | Laboratory characterization of soil internal erosion |
| title_sort | laboratory characterization of soil internal erosion |
| topic | Engineering::Civil engineering::Geotechnical |
| url | https://hdl.handle.net/10356/172818 |
| work_keys_str_mv | AT denghao laboratorycharacterizationofsoilinternalerosion |