Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring
There are momentum and mass exchanges between rivers and its adjacent harbors, damfields and river channels. This paper analyzes the influence of different spur dike spacing onriver bed scouring by two-dimensional water-sediment model and theoretical model. The results showthat with the gradual incr...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.01.011 |
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| author | WANG Renchao ZHANG Gongjin HU Caixia LIU Rui WU Dongdong |
| author_facet | WANG Renchao ZHANG Gongjin HU Caixia LIU Rui WU Dongdong |
| author_sort | WANG Renchao |
| collection | DOAJ |
| description | There are momentum and mass exchanges between rivers and its adjacent harbors, damfields and river channels. This paper analyzes the influence of different spur dike spacing onriver bed scouring by two-dimensional water-sediment model and theoretical model. The results showthat with the gradual increase of the spur dike spacing, the scouring depth of the dam headincreases slowly, and the scouring distribution in the main channel becomes uneven. Under themaximum flood and ebb velocity, the exchange coefficient of water and sediment between the damfield and the main channel is from 0.01 to 0.04. Under the maximum flood velocity, the exchangecoefficient decreases gradually with the increase of spur dike spacing in linear relationship. Butunder the maximum ebb velocity, the exchange coefficient is the largest when spur dike spacing is4 times longer than dike; and with the increase of spur dike spacing, the average flow velocity inthe main channel decreases gradually. As a whole, the average scouring depth of the main channeldecreases with the increase of spur dike spacing. |
| format | Article |
| id | doaj-art-9ae118c17ee34662abd260ea333e9f01 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-9ae118c17ee34662abd260ea333e9f012025-01-15T02:32:16ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352020-01-014147653074Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed ScouringWANG RenchaoZHANG GongjinHU CaixiaLIU RuiWU DongdongThere are momentum and mass exchanges between rivers and its adjacent harbors, damfields and river channels. This paper analyzes the influence of different spur dike spacing onriver bed scouring by two-dimensional water-sediment model and theoretical model. The results showthat with the gradual increase of the spur dike spacing, the scouring depth of the dam headincreases slowly, and the scouring distribution in the main channel becomes uneven. Under themaximum flood and ebb velocity, the exchange coefficient of water and sediment between the damfield and the main channel is from 0.01 to 0.04. Under the maximum flood velocity, the exchangecoefficient decreases gradually with the increase of spur dike spacing in linear relationship. Butunder the maximum ebb velocity, the exchange coefficient is the largest when spur dike spacing is4 times longer than dike; and with the increase of spur dike spacing, the average flow velocity inthe main channel decreases gradually. As a whole, the average scouring depth of the main channeldecreases with the increase of spur dike spacing.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.01.011tidal estuaryspur dikesriverbed volumewaters regulationsediment deposition |
| spellingShingle | WANG Renchao ZHANG Gongjin HU Caixia LIU Rui WU Dongdong Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring Renmin Zhujiang tidal estuary spur dikes riverbed volume waters regulation sediment deposition |
| title | Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring |
| title_full | Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring |
| title_fullStr | Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring |
| title_full_unstemmed | Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring |
| title_short | Study on the Effect of Spur Dike Arrangement in Tidal Estuary on River Bed Scouring |
| title_sort | study on the effect of spur dike arrangement in tidal estuary on river bed scouring |
| topic | tidal estuary spur dikes riverbed volume waters regulation sediment deposition |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.01.011 |
| work_keys_str_mv | AT wangrenchao studyontheeffectofspurdikearrangementintidalestuaryonriverbedscouring AT zhanggongjin studyontheeffectofspurdikearrangementintidalestuaryonriverbedscouring AT hucaixia studyontheeffectofspurdikearrangementintidalestuaryonriverbedscouring AT liurui studyontheeffectofspurdikearrangementintidalestuaryonriverbedscouring AT wudongdong studyontheeffectofspurdikearrangementintidalestuaryonriverbedscouring |