Experiments on sediment transport in shallow flows in high gradient channels
نویسندگان
چکیده
The main objective of this paper is to present the results of an experimental study relating to the transport of sediment under certain conditions not typical of river sedimentation studies. The area of sediment transport lacks information on the transport down high gradient channels that are typical of streets, construction sites and agricultural land, in addition to mountain torrrents. The study of transport of non-cohesive sediment in high gradient channels includes determination of the transport capacity of shallow flows in high gradient channels with simulated bed roughness and various grain sizes. Regression analysis was performed to relate the dependent and independent variables in functional relationships and revealed good correlation. Expériences sur le transport sédimentaire dans des canaux à faible débit et a dénivellation importante Résumé L'objectif principal de cette étude est de présenter les résultats d'une recherche expérimentale sur le transport des sédiments sous certaines conditions non-caractéristiques d'études précédentes sur la sédimentation fluviale. L'étude sur le transport des sédiments manque d'information sur le transport le long des canaux à forte dénivellation tels que rues, sites de construction, terrains agricoles et torrents alpins. L'étude du transport des sédiments non-cohésifs dans les canaux à forte dénivellation comprend la mesure de la capacité de transport dans les canaux à faible débit avec des lits à rugosité simulée et à grosseur de grain variable. L'analyse inverse a été réalisée afin d'intégrer les variables déterminées et indéterminées dans un rapport fonctionnel, tout en révélant une parfaite corrélation. NOTATION a,b constants D grain diameter g gravitational constant h flow depth Q water flow rate Open for discussion until 1 February 1990 465 Nadim M. Aziz & David E. Scott 466 Qb sediment flow rate r correlation coefficient 5 channel slope 7 water density 7 sediment density
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