Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment
“Sediment and Flood Disaster (SFD)” has recently been newly defined as a river disaster type. To mitigate SFD while considering river environment, sand retarding basins (SRB) are constructed upstream of the river for protection. In this study, we conducted laboratory experiments on the SRB to mitiga...
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| Language: | English |
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EDP Sciences
2025-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/03/e3sconf_isgst2024_01027.pdf |
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| author | Ishikura Mikako Kimura Ichiro Harada Norio |
| author_facet | Ishikura Mikako Kimura Ichiro Harada Norio |
| author_sort | Ishikura Mikako |
| collection | DOAJ |
| description | “Sediment and Flood Disaster (SFD)” has recently been newly defined as a river disaster type. To mitigate SFD while considering river environment, sand retarding basins (SRB) are constructed upstream of the river for protection. In this study, we conducted laboratory experiments on the SRB to mitigate SFD and examine its fundamental aspects. Three types of SRB with different aspect ratios (B/b, where B is the width of the SRB and b is the width of the channel) were considered. Two experiments were conducted. In Case A, the water discharge was fixed at three different values, and the capture ratio of sand was measured 10 min after the start of discharge (quasi-equilibrium state). In Case B, the amount of sand in the SRB was measured every two minutes, thereby examining the temporal changes in the amount of sand deposited in the SRB. For B/b > 2, sand outflow was observed to slow down. For B/b > 3, a prolonged sand retention effect was observed. |
| format | Article |
| id | doaj-art-ee6ba3771b7c4fe2962243e23a8f24ab |
| institution | Kabale University |
| issn | 2267-1242 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj-art-ee6ba3771b7c4fe2962243e23a8f24ab2025-02-05T10:47:33ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016030102710.1051/e3sconf/202560301027e3sconf_isgst2024_01027Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environmentIshikura Mikako0Kimura Ichiro1Harada Norio2Graduate School of Science and Engineering, University of Toyama (3190 Gofuku, Toyama 930-8555, Japan)Faculty of Sustainable Design, University of Toyama (3190 Gofuku, Toyama 930-8555, Japan)Mitsui Kyodo Construction Consultants, Inc. (9F Osaka Bay Tower Office, 1-2-1-900 Benten, Minato-ku, Osaka, 552-0007, Japan)“Sediment and Flood Disaster (SFD)” has recently been newly defined as a river disaster type. To mitigate SFD while considering river environment, sand retarding basins (SRB) are constructed upstream of the river for protection. In this study, we conducted laboratory experiments on the SRB to mitigate SFD and examine its fundamental aspects. Three types of SRB with different aspect ratios (B/b, where B is the width of the SRB and b is the width of the channel) were considered. Two experiments were conducted. In Case A, the water discharge was fixed at three different values, and the capture ratio of sand was measured 10 min after the start of discharge (quasi-equilibrium state). In Case B, the amount of sand in the SRB was measured every two minutes, thereby examining the temporal changes in the amount of sand deposited in the SRB. For B/b > 2, sand outflow was observed to slow down. For B/b > 3, a prolonged sand retention effect was observed.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/03/e3sconf_isgst2024_01027.pdf |
| spellingShingle | Ishikura Mikako Kimura Ichiro Harada Norio Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment E3S Web of Conferences |
| title | Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment |
| title_full | Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment |
| title_fullStr | Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment |
| title_full_unstemmed | Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment |
| title_short | Study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment |
| title_sort | study on mitigating sediment and flood disasters with sand retarding basins in consideration of natural river environment |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/03/e3sconf_isgst2024_01027.pdf |
| work_keys_str_mv | AT ishikuramikako studyonmitigatingsedimentandflooddisasterswithsandretardingbasinsinconsiderationofnaturalriverenvironment AT kimuraichiro studyonmitigatingsedimentandflooddisasterswithsandretardingbasinsinconsiderationofnaturalriverenvironment AT haradanorio studyonmitigatingsedimentandflooddisasterswithsandretardingbasinsinconsiderationofnaturalriverenvironment |