Hydraulics of the Sluiceway of a Diversion Dam (I)

SAWADA Tosio, CHIKAMORI Kunihide

doi:10.11408/jsidre1965.1965.7

Bibliographic Information

Other Title

頭首工土砂吐の水理 (I)
On the Design Velocity
設計流速について

Description

The designed current velocity for a sluiceway of a diversion dam should be that is sufficient to flush away the largest gravel in the deposit on the sluiceway. We studied, first in this paper, the forces acting on the single spherical granul pebble on a riverbed, and secondly by excluding the negligible factors in consideration of the flow characteristics on a sluiceway, we obtained a formula of the curreut velocity for a sphere in a state of equilibrium on a riverbed. We made a study of the scale effect for the model test. And we made a study of the effect of the gravel shape of pebble on the critical velocity, and found that d= (b+c)/ 2 and √bc are suitable as the diameter for design. Nextexamining the experimental data, we showed the propriety of the equations. Using the logalithmic velocity distribution formula, we obtained the coefficient k (kf and kr), by which we should multiply the equation when it is used as a formula for the design velocity. We propose, a design velocity formula and its the simplified form, as follows _??_ ums=5.2k√d

Journal

Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering

Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering 1965 (12), 7-13, 1965

The Japanese Society of Irrigation, Drainage and Rural Engineering

Details 詳細情報について

CRID: 1390282679518097664

NII Article ID: 130004118261

DOI: 10.11408/jsidre1965.1965.7

ISSN: 18847234; 03872335

Data Source

JaLC
CiNii Articles

Abstract License Flag: Disallowed

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