Determination of conditions of suspended sediment transport in river and water reservoir
2008
Michalec, B. | Tarnawski, M.,Krakow Agricultural University (Poland). Dept. of Water Engineering
The results of measurements carried out in the river and in the reservoir permitted elaboration of profiles of suspended sediment concentration Ca on the reference level a. The reference level was established according to van Rijn's methods. In the river the reference level was adopted as 0.5 of the diameter of the biggest particle, and in the water reservoir 0.01 of elevation in a given hydrometric vertical. Measurement were performed at a flow equalling 0.89 cubic m/s. Concentration Ca in the river in five hydrometric verticals, determined from the concentration profile, ranged from 11.4 to 25.3 g/cubic m. The concentration value, calculated according to van Rijn's formula was within the range 11.2-36.5 g/cubic m and the average it was over 26 percent higher than that determined from the concentration profile. In the water reservoir concentration measurements were performed in appointed verticals in eight cross-sections. At a flow 0.89 cubic m/s in the water reservoir critical bed shear velocities causing movement of bottom material will not be exceeded
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