Minimum falling 2sill depth of the falling 2sill bottom2flow dissipation

The hydraulic characteristics of the falling2sill bottom2flow energy dissipation pool are affected by the falling 2sill depth. In order to control the allowable maximum time 2averaged dynamic water pressure in the dissipation pool, a method and its theoretic formula for determining the minimum falling2sill depth are preliminarily analyzed and derived using the plane turbulent jet theory. Based on the hydraulic model experiments, the relationship between the time 2averaged dynamic water pressure on the bottom plate and the minimum falling 2sill depth is obtained. T he calculated falling2sill depth is compared with the measured val2 ue to verify the applicability of theoretic formula.

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