Effect of flood plain embankments on channel scour / Elias Mohd Den
A study has been conducted to investigate the effect of embankment constriction of a flood plain on localized scour in the main channel using a physical hydraulic model large enough to avoid scale effects of surface tension, gravitational affects and viscous forces. The physical river model consider...
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| Format: | Conference or Workshop Item |
| Language: | en |
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2002
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| Online Access: | https://ir.uitm.edu.my/id/eprint/74055/1/74055.pdf https://ir.uitm.edu.my/id/eprint/74055/ |
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| _version_ | 1833075608610930688 |
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| author | Mohd Den, Elias |
| author_facet | Mohd Den, Elias |
| author_sort | Mohd Den, Elias |
| building | Tun Abdul Razak Library |
| collection | Institutional Repository |
| content_provider | Universiti Teknologi Mara |
| content_source | UiTM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | A study has been conducted to investigate the effect of embankment constriction of a flood plain on localized scour in the main channel using a physical hydraulic model large enough to avoid scale effects of surface tension, gravitational affects and viscous forces. The physical river model considered is composed of mobile bed-channel filled with fine gravel (d5o = 2.5mm), flood plains with rigid bed and 70° skewed embankments. The study revealed that no scour occurred if the constriction on the flood plains or of embankments was less than 65% and in all cases the scouring started to occur when the velocity in the main channel reached a value of 0.62m/s which can be considered the threshold velocity of the fine gravel for the flow depth of 210mm. The results have also shown that the scour attained a maximum depth at a point where the velocity is maximum and there seems to be a definite relationship between maximum scoured depth, (D+ds)/D and the amount of constriction (m), provided m ≥ 70%. |
| format | Conference or Workshop Item |
| id | my.uitm.ir-74055 |
| institution | Universiti Teknologi Mara |
| language | en |
| publishDate | 2002 |
| record_format | eprints |
| spelling | my.uitm.ir-740552023-07-27T16:55:57Z https://ir.uitm.edu.my/id/eprint/74055/ Effect of flood plain embankments on channel scour / Elias Mohd Den Mohd Den, Elias Environmental conditions. Environmental quality. Environmental indicators. Environmental degradation Environmental disasters A study has been conducted to investigate the effect of embankment constriction of a flood plain on localized scour in the main channel using a physical hydraulic model large enough to avoid scale effects of surface tension, gravitational affects and viscous forces. The physical river model considered is composed of mobile bed-channel filled with fine gravel (d5o = 2.5mm), flood plains with rigid bed and 70° skewed embankments. The study revealed that no scour occurred if the constriction on the flood plains or of embankments was less than 65% and in all cases the scouring started to occur when the velocity in the main channel reached a value of 0.62m/s which can be considered the threshold velocity of the fine gravel for the flow depth of 210mm. The results have also shown that the scour attained a maximum depth at a point where the velocity is maximum and there seems to be a definite relationship between maximum scoured depth, (D+ds)/D and the amount of constriction (m), provided m ≥ 70%. 2002 Conference or Workshop Item PeerReviewed text en https://ir.uitm.edu.my/id/eprint/74055/1/74055.pdf Effect of flood plain embankments on channel scour / Elias Mohd Den. (2002) In: Prosiding Seminar Kebangsaan Sains,Teknologi dan Sains Sosial “Ke Arah Pembangunan Negara”, 27 dan 28 Mei 2002, Hotel Vistana, Kuantan, Pahang. |
| spellingShingle | Environmental conditions. Environmental quality. Environmental indicators. Environmental degradation Environmental disasters Mohd Den, Elias Effect of flood plain embankments on channel scour / Elias Mohd Den |
| title | Effect of flood plain embankments on channel scour / Elias Mohd Den |
| title_full | Effect of flood plain embankments on channel scour / Elias Mohd Den |
| title_fullStr | Effect of flood plain embankments on channel scour / Elias Mohd Den |
| title_full_unstemmed | Effect of flood plain embankments on channel scour / Elias Mohd Den |
| title_short | Effect of flood plain embankments on channel scour / Elias Mohd Den |
| title_sort | effect of flood plain embankments on channel scour / elias mohd den |
| topic | Environmental conditions. Environmental quality. Environmental indicators. Environmental degradation Environmental disasters |
| url | https://ir.uitm.edu.my/id/eprint/74055/1/74055.pdf https://ir.uitm.edu.my/id/eprint/74055/ |
| url_provider | http://ir.uitm.edu.my/ |