Title:
河川構造
Document Type and Number:
Japanese Patent JP6503412
Kind Code:
B2
Abstract:
To provide a river structure which does not need to provide a fish pass on a lateral side of a dam and in which an apron is hard to be destroyed.SOLUTION: In a river structure, an inclined part is provided on the downstream side of a dam, an apron is provided on the downstream side of the inclined part, and a top surface of the inclined part is formed as a down slope in which a dam side becomes higher and an apron side becomes lower. The inclined part may be constructed by stacking many stones in a stepwise by providing a step so as to be upwardly tilted from the downstream side to the upstream side. A fish pass is positioned on a top part of the inclined part in which stones are stacked. The fish pass has an inclination such that fish can go against stream. The apron may be formed by arranging a parallel-cross assembly on cobble stones installed on a river bed, and by stacking large stones or fixing lower parts of two or more large stones using concrete on the parallel-cross assembly.SELECTED DRAWING: Figure 1
Inventors:
Tsukamoto Tsuyoshi
Tsutomu Shibasaki
Sawamoto Masaru
Tsutomu Shibasaki
Sawamoto Masaru
Application Number:
JP2017103657A
Publication Date:
April 17, 2019
Filing Date:
May 25, 2017
Export Citation:
Assignee:
Tsukamoto Construction Co., Ltd.
Sawamoto Co., Ltd.
Sawamoto Co., Ltd.
International Classes:
E02B8/08
Domestic Patent References:
| JP3144408U | ||||
| JP3025831U | ||||
| JP2951330B1 | ||||
| JP3611540B2 | ||||
| JP5837342B2 |
Attorney, Agent or Firm:
Masaharu Kobayashi
Masahide Kobayashi
Masahide Kobayashi