The Method of Calculating the Stable Bed in a Double Section River as the Foundation for Examining the Stability of Water Intake From the River (II)

Application and Discussion

Abstract

The theories of the paper (I) are applied to the downstream part of Watarase river, which is a typical double section river, and the problems of application and the results of calculations for the stable beds are discussed in detail.
Fig. 1 and Fig. 2 give the topographical outlines of the downstream of Watarase river. The part near Fujioka is an artifical river for making water from the Watarase river flow into Akama swamp, and in view of this the width of this part is very narrow. This explains how this part influences the stable beds.
Fig. 3 shows stable beds for various discharges from 500 t/s to 4, 500 t/s. This shows how the profile of flow on the stable beds and the features of the stable beds vary with discharges, and the discharge which influenced the present bed is analyzed.
Lastly, the stable beds at the planned point of intake are shown in Table 6, and a forecast is made on how the bed levels will change by floods in the future.