Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures
Rockfill structures are one of the most applicable structures in hydraulic engineering. Rockfill dams are always used to mitigate flood in the river to prevent damage in downstream of river basin. Since this type detention dams should carry large amount of sediment particles. Therefore a considerati...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Babol Noshirvani University of Technology
2012-01-01
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| Series: | Iranica Journal of Energy and Environment |
| Subjects: | |
| Online Access: | http://www.ijee.net/Journal/ijee/vol3/no2/14.pdf |
| _version_ | 1827298597928960000 |
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| author | Jafar Chapokpour Ebrahim Amiri Tokaldany |
| author_facet | Jafar Chapokpour Ebrahim Amiri Tokaldany |
| author_sort | Jafar Chapokpour |
| collection | DOAJ |
| description | Rockfill structures are one of the most applicable structures in hydraulic engineering. Rockfill dams are always used to mitigate flood in the river to prevent damage in downstream of river basin. Since this type detention dams should carry large amount of sediment particles. Therefore a consideration should be taken to prevent from siltation of its pore system. To achieve this subject a minimum hydraulic gradient should be existed on the structure which is called critical hydraulic gradient for initiation of motion. Previously some semi theoretical researches were done on this aspect with different investigators but any general consideration wasnot accomplished to develop an equation which covers all available data series. In this research tried to collect all available data series for extraction a relationship with acceptable accuracy in the subject of sediment transport in porous media. An alteration was made on two basic existence relationships because of deflectionfrom Darcy law. Then the coefficients of developed equation related to geometrical characteristics of rockfill media. Ultimately a favorable equation obtained with acceptable accuracy. |
| first_indexed | 2024-04-24T15:17:36Z |
| format | Article |
| id | doaj.art-e0311a043cc44de8b102e61ddf98ea79 |
| institution | Directory Open Access Journal |
| issn | 2079-2115 2079-2123 |
| language | English |
| last_indexed | 2024-04-24T15:17:36Z |
| publishDate | 2012-01-01 |
| publisher | Babol Noshirvani University of Technology |
| record_format | Article |
| series | Iranica Journal of Energy and Environment |
| spelling | doaj.art-e0311a043cc44de8b102e61ddf98ea792024-04-02T09:12:33ZengBabol Noshirvani University of TechnologyIranica Journal of Energy and Environment2079-21152079-21232012-01-0132197201Critical Hydraulic Gradient for Sediment Transport Through Rockfill StructuresJafar ChapokpourEbrahim Amiri TokaldanyRockfill structures are one of the most applicable structures in hydraulic engineering. Rockfill dams are always used to mitigate flood in the river to prevent damage in downstream of river basin. Since this type detention dams should carry large amount of sediment particles. Therefore a consideration should be taken to prevent from siltation of its pore system. To achieve this subject a minimum hydraulic gradient should be existed on the structure which is called critical hydraulic gradient for initiation of motion. Previously some semi theoretical researches were done on this aspect with different investigators but any general consideration wasnot accomplished to develop an equation which covers all available data series. In this research tried to collect all available data series for extraction a relationship with acceptable accuracy in the subject of sediment transport in porous media. An alteration was made on two basic existence relationships because of deflectionfrom Darcy law. Then the coefficients of developed equation related to geometrical characteristics of rockfill media. Ultimately a favorable equation obtained with acceptable accuracy.http://www.ijee.net/Journal/ijee/vol3/no2/14.pdfRockfill structuresSediment TransportCritical hydraulic gradientNon-Darcy flow |
| spellingShingle | Jafar Chapokpour Ebrahim Amiri Tokaldany Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures Iranica Journal of Energy and Environment Rockfill structures Sediment Transport Critical hydraulic gradient Non-Darcy flow |
| title | Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures |
| title_full | Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures |
| title_fullStr | Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures |
| title_full_unstemmed | Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures |
| title_short | Critical Hydraulic Gradient for Sediment Transport Through Rockfill Structures |
| title_sort | critical hydraulic gradient for sediment transport through rockfill structures |
| topic | Rockfill structures Sediment Transport Critical hydraulic gradient Non-Darcy flow |
| url | http://www.ijee.net/Journal/ijee/vol3/no2/14.pdf |
| work_keys_str_mv | AT jafarchapokpour criticalhydraulicgradientforsedimenttransportthroughrockfillstructures AT ebrahimamiritokaldany criticalhydraulicgradientforsedimenttransportthroughrockfillstructures |