頭首工土砂吐の水理 (I)
書誌事項
- タイトル別名
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- Hydraulics of the Sluiceway of a Diversion Dam (I)
- On the Design Velocity
- 設計流速について
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説明
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.<BR>We made a study of the scale effect for the model test.<BR>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.<BR>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.<BR>We propose, a design velocity formula and its the simplified form, as follows<BR>_??_<BR>ums=5.2k√d
収録刊行物
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- 農業土木学会論文集
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農業土木学会論文集 1965 (12), 7-13, 1965
社団法人 農業農村工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679518097664
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- NII論文ID
- 130004118261
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- ISSN
- 18847234
- 03872335
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
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