Study On Scouring and Protection of USBR-III Type Downstream of Spillway
Abstract. In the downstream part of the spillway building, especially in the flood way, occurs phenomenon of changing flow conditions from super critical to sub critical which causes a hydraulic jump and used by energy absorbers to reduce flow energy. The hydraulic jump in the floodway causes scouri...
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Universitas Negeri Semarang
2022-04-01
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| Series: | Jurnal Teknik Sipil dan Perencanaan |
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| Online Access: | https://journal.unnes.ac.id/nju/jtsp/article/view/34196 |
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| author | Lutfi Hair Djunur |
| author_facet | Lutfi Hair Djunur |
| author_sort | Lutfi Hair Djunur |
| collection | DOAJ |
| description | Abstract. In the downstream part of the spillway building, especially in the flood way, occurs phenomenon of changing flow conditions from super critical to sub critical which causes a hydraulic jump and used by energy absorbers to reduce flow energy. The hydraulic jump in the floodway causes scouring of the bottom, particularly in the unprotected downstream spillway. Using 3 different dimensional baffle block models provides three different discharge variations in four flow simulations. Based on the results of the analysis and planning of the baffle block, it is found that the effectiveness in protecting the downstream scour of the spillway, namely baffle block dimensions of 1:1, 1:3 and 1:5. The three models of baffle blocks are used to determine the change in channel cross-section, scour pattern, scour volume and flow parameters that occur in downstream of spillway. The results showed that without baffle block was 32.80%, 1:1 baffle block was 43, 24%, 1:3 baffle block was 10.01% and 1:5 baffle block was 47.77%. The results of the drainage simulation showed that the higher the water level and the velocity of the flow at the bottom of the channel, the less the flow will be and will not be able to lift the bottom material of the channel |
| format | Article |
| id | doaj-art-4ab3a8a8eb314a129c7f8bfbc9bf3568 |
| institution | Kabale University |
| issn | 1411-1772 2503-1899 |
| language | English |
| publishDate | 2022-04-01 |
| publisher | Universitas Negeri Semarang |
| record_format | Article |
| series | Jurnal Teknik Sipil dan Perencanaan |
| spelling | doaj-art-4ab3a8a8eb314a129c7f8bfbc9bf35682025-08-20T03:36:35ZengUniversitas Negeri SemarangJurnal Teknik Sipil dan Perencanaan1411-17722503-18992022-04-01241627110.15294/jtsp.v24i1.3419612587Study On Scouring and Protection of USBR-III Type Downstream of SpillwayLutfi Hair Djunur0Universitas Muhammadiyah MakassarAbstract. In the downstream part of the spillway building, especially in the flood way, occurs phenomenon of changing flow conditions from super critical to sub critical which causes a hydraulic jump and used by energy absorbers to reduce flow energy. The hydraulic jump in the floodway causes scouring of the bottom, particularly in the unprotected downstream spillway. Using 3 different dimensional baffle block models provides three different discharge variations in four flow simulations. Based on the results of the analysis and planning of the baffle block, it is found that the effectiveness in protecting the downstream scour of the spillway, namely baffle block dimensions of 1:1, 1:3 and 1:5. The three models of baffle blocks are used to determine the change in channel cross-section, scour pattern, scour volume and flow parameters that occur in downstream of spillway. The results showed that without baffle block was 32.80%, 1:1 baffle block was 43, 24%, 1:3 baffle block was 10.01% and 1:5 baffle block was 47.77%. The results of the drainage simulation showed that the higher the water level and the velocity of the flow at the bottom of the channel, the less the flow will be and will not be able to lift the bottom material of the channelhttps://journal.unnes.ac.id/nju/jtsp/article/view/34196spillwaybaffle blockscouring presentation |
| spellingShingle | Lutfi Hair Djunur Study On Scouring and Protection of USBR-III Type Downstream of Spillway Jurnal Teknik Sipil dan Perencanaan spillway baffle block scouring presentation |
| title | Study On Scouring and Protection of USBR-III Type Downstream of Spillway |
| title_full | Study On Scouring and Protection of USBR-III Type Downstream of Spillway |
| title_fullStr | Study On Scouring and Protection of USBR-III Type Downstream of Spillway |
| title_full_unstemmed | Study On Scouring and Protection of USBR-III Type Downstream of Spillway |
| title_short | Study On Scouring and Protection of USBR-III Type Downstream of Spillway |
| title_sort | study on scouring and protection of usbr iii type downstream of spillway |
| topic | spillway baffle block scouring presentation |
| url | https://journal.unnes.ac.id/nju/jtsp/article/view/34196 |
| work_keys_str_mv | AT lutfihairdjunur studyonscouringandprotectionofusbriiitypedownstreamofspillway |