Experimental works on the hyporheic zone influence on river dynamics. I. Bed deformation

• Autorzy: Herrera Granados O.
• Języki publikacji: EN

Abstrakty

EN

Some experimental works are presented in order to analyze the effect of upward seepage on sediment transport mechanisms at the laboratory scale. Groundwater flow was induced by provoking hydraulic pressures in the lowest part of the bed being constituted by a fine sandy soil. The bed evolution is compared for three different flow rates (with and without seepage). Additionally, another series of experiments was carried out at a constant flow rate but at different hydraulic pressures. The results of the experiments demonstrate that the bed deformation with seepage is smoother than without seepage, especially in the zones where secondary flows arise due to scouring at the entrance to the experimental flume.

Słowa kluczowe

PL

rzeki; dynamika rzeki; transport osadów; przesączanie; deformacja złoża

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2010
• Tom: Vol. 32, nr 3
• Strony: 17--26
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Herrera Granados O.

• Institute of Geotechnics and Hydrotechnics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław.

Bibliografia

• [1]HERRERA GRANADOS O., Effect of seepage flow on channel bed evolution at the laboratory scale, River Flow 2008, Izmir, IAHR Congress, 2008, 1117–1126.
• [2]HERRERA GRANADOS O., Seepage flow through channel beds and its role in sediment transport processes, InterTech, 2008, Poznań, 93–97.
• [3]HERRERA GRANADOS O., The role of a movable sandy-bed in modelling open-channel flow, Studia Geotechnica et Mechanica, Vol. XXX, No. 1–2, 93–97.
• [4]FERREIRA R.M.L., FRANCA M.J., LEAL J.G.A.B., Laboratorial and theoretical study of the mobility of gravel and sand mixtures, Fifth IAHR Symposium on River, Coastal and Estuarine Morphodynamics: RCEM 2007, Taylor & Francis Group, London, 2008, 531–539.
• [5]JUAREZ BADILLO E., RICO RODRIGUEZ A., Soils Mechanics III: Water Flow Through Soils (in Spanish), Mexico City, Noriega Ed., 2004.
• [6]LIU Z., Sediment Transport, Oslo, Instituttet for Vand, Jorg og Miljøteknik Aalborg Universitet, 2001.
• [7]OLSEN N.R.B., Numerical Modelling and Hydraulics, The Norwegian University of Science and Technology, 2007.
• [8]STRZELECKI T., KOSTECKI S., ŻAK S., Modelling of flows through porous media, (in Polish), DWN, Wrocław, 2008.