Shape parameters of the transverse cross-section of river beds
Annotatsiya
Abstract The construction of hydrotechnical structures on rivers will require the establishment of the planned dimensions of sustainable supply and discharge rivers. The main goal of this work is to determine the parameters of a stable cross-sectional shape of the river channels of Algeria. The problem was solved using hydromorphological and probabilistic-static methods for determining the parameters of stable channels. Hydromorphological dependencies were established for tens of Algerian rivers between the relative width and water discharge and mainly feedback. Using the probabilistic-static method, the static parameters of the alignment curves were calculated (Sidi Bel Atar of the Shelef River β 0 = 58.7, CV = 0.184, ξ = 5, CS = 0.92, and also for β 0 = 30.44, CV = 0.295, ξ = 4, CS = 1.18. A comparison is made of the theoretical binomial security curve with the actually measured data and which are well approximated. An example of calculation by the proposed method for a specific alignment of the Algerian Shelef river is performed.