MOVABLE TYPE FISH-PASS WATERWAY FACILITY

Title:

MOVABLE TYPE FISH-PASS WATERWAY FACILITY

Document Type and Number:

Japanese Patent JP3936504

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a movable type fish-pass waterway equipment, in which fluctuation width of the depth of water in a waterway is decreased under the state of a water flow, in which fishes can move upstream, and a fixed quantity of water can be discharged into a fixed type fish-pass waterway on the downstream side and the labor of which is saved and which is automated.
SOLUTION: In the fish-pass waterway facility installed to an upstream-side reservoir formed by a dam, a weir or the like mounted, crossing a river as a facility, in which fishes can be moved smoothly, the movable type waterway equipment, which is composed of an upstream-side overflow type inflow wall 11, a downstream-side overflow type discharge wall 12, a bottom plate 14 and both sidewalls 13 and in which fixed height difference is formed in upstream-side inflow height and downstream-side discharge height, is set up to the upstream-side water conveyance section of the waterway facility vertical movably, and a lifting-lowering drive device 5 adjusting the lifting and lowering of the movable type waterway facility so as to keep upstream-side inflow height constant in response to the fluctuation of the water level of the upstream- side reservoir is secured. Accordingly, a fixed quantity of water can be discharged into a downstream-side fish-pass waterway under the state in which fishes can go upstream, at all times even when the water level of the upstream-side reservoir fluctuates in the movable type fish-pass waterway facility.

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Inventors:

Michihiro Fujii

Application Number:

JP33499299A

Publication Date:

June 27, 2007

Filing Date:

November 25, 1999

Export Citation:

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Assignee:

KS Co., Ltd.

International Classes:

E02B8/08; (IPC1-7): E02B8/08

Domestic Patent References:

JP2000319860A
JP61266714A
JP6264428A
JP7003753A
JP3017505Y2
JP8170321A
JP2000045255A
JP2000144697A

Attorney, Agent or Firm:

Masu Kobori
Takato Tsutsumi

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