JP2553448Y2 - Fish collection equipment for dam fishway - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish collecting facility for guiding upstream fish to a facility for transporting upstream fish from a river downstream of a dam to an upstream reservoir.

[0002]

[Problems to be solved by the present invention] By the way, it is necessary to continuously collect fish upstream and out of the water day and night. On the other hand, the equipment for transporting to the reservoir upstream of the dam is operated as efficiently as possible by intermittent operation. It is desirable to operate it economically and economically.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a fish collecting system for a dam fishway which can rely on fish habits without catching and collecting upstream fish without monitoring. The purpose is.

[0004]

In order to achieve the above-mentioned object, a fish collecting system of a fishway for a dam according to the present invention includes a system for transporting upstream fish from a river downstream of the dam to an upstream reservoir. A fish collecting facility for guiding fish, a circulating water tank installed continuously with an upstream end of a fishway provided on the downstream river side, and a pseudo overflow weir provided near an end of the circulating water tank. A pump device for creating a flow from the pseudo overflow weir to the fishway and creating a flow of water from the upper portion to the lower portion of the pseudo overflow weir in the water in the circulating water tank; It is provided with a fish collection tank continuously installed through a steep slope, and a delivery tank to the transportation equipment continuously arranged through the fish collection tank and a gate.

[0005]

In the fish collecting equipment of the fishway for the dam of the present invention having the above-mentioned structure, the fish that has traveled up the fishway enters the circulating water tank and ascends toward the flow flowing through the circulating water tank. Then, it reaches a pseudo overflow weir provided near the end of the circulating water tank, goes up the pseudo overflow weir, slides on a steep slope, and flows into the fish collecting tank.

[0006] When the amount of fish in the fish collecting tank becomes appropriate, the gate is opened and the water and the fish are transferred together and poured into the tank. A container for transporting fish is stored in the transfer layer, and the fish poured into this container is transported to a reservoir upstream of the dam by a transport facility and released.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the accompanying drawings. FIG. 1 is an overall schematic view (plan view) showing one embodiment of a fish collecting facility according to the present invention. FIG. 2 shows A in FIG.
FIG. 3 is a sectional view taken along the line BB of FIG. 1.

In the drawings, reference numeral 1 denotes a fishway provided in a river downstream of the dam with, for example, a required upward gradient from the downstream side of the dam to the upstream side. The fishway 1 has, for example, a discharge pipe 2a and a discharge pipe 2a. Water supplied by the river maintenance and discharge facility 2 including a flow control valve 2b, a spare valve 2c, and the like provided in the middle of the pipe 2a flows through a water storage tank 3 provided at the end of the fishway 1. The fish goes up the fishway 1 based on the flowing water.

The water flowing from the water tank 3 into the fishway 1 is formed to flow from the overflow control gate 4 in a waterfall shape. Cannot enter the circulating water tank 5 provided around the water storage tank 3. In addition, 5
a is a screen for preventing fish from entering.

In the vicinity of the end of the circulating water tank 5, a pseudo overflow weir 6 and a water stop wall 7 are erected with a required gap, and the flow between the pseudo overflow weir 6 and the water stop wall 7 is circulated. A steep slope 8 having a downward slope toward the outside of the water tank 5 is formed.

Reference numeral 9a denotes a pump which draws in water on the water stop wall 7 side in the circulation water tank 5 and discharges it to the pseudo overflow weir 6 side. The water is discharged from above the overflow weir 6 and the steep ramp 8 to below the pseudo overflow weir 6 and the steep ramp 8, respectively. 9b is a pump 9 for pumping water on the water stop wall 7 side.
suction tube leading to a, 9 d is horizontal and from above the pseudo weir 6 and Kyuhasuro 8 water like a shower state (pseudo weir 6
Side) and a branch pipe discharged in the vertical state (steep slope 8 side) ,
Reference numeral 9e denotes a branch pipe for discharging the overflow from the upper end of the pseudo overflow weir 6, imitating the overflow. These branch pipes 9d and 9e are provided with control valves 9f and 9g, respectively. These pumps 9
a, the suction tube 9b, minute branch pipes 9d, 9e, control valve 9
f and 9 g constitute the pump equipment 9.

Namely, the pump water in the circulating water 5 by equipment 9, pseudo overflow the overflow imitating weir 6 fish <br/> Road unidirectional flow Rutotomoni, further pseudo weir 6 And, on the steep slope 8, the water is showered and released in the horizontal and vertical states.
By flowing, water flows downward from above.

Therefore, as described above, the fish that has entered the circulating water tank 5 travels in the circulating water tank 5 toward the pseudo overflow weir 6, goes up the pseudo overflow weir 6, and then discharges from the steep slope 8. , And falls under the steep slope 8, and flows into the fish collecting tank 10 continuously installed below the steep slope 8. Since the water flowing on the steep slope 8 is a jet stream, fish cannot escape from the fish collecting tank 10.

Reference numeral 11 denotes a delivery tank which is continuously arranged via the fish collecting tank 10 and a gate 12.
The fish are handed over to the transport facility to the reservoir. That is, when the amount of fish in the fish collecting tank 10 becomes appropriate, the gate 12 is opened, and the water and the fish are poured together into the container previously stored in the delivery tank 11, and the fish in the container is opened. Is transported to the top of the dam by transport equipment and discharged into a reservoir.

The fish tank 10 and the transfer tank 11 are connected to a spill tank 15 via screens 13 and 14, respectively. The water level in the fish tank 10 is always kept constant, and the remaining water in the transfer tank 11 is kept constant. It is made to flow. In addition, a priming pipe 16 is connected to the spill tank 15, and the spill water is discharged near the entrance of the fishway 1 so as to prime the fish.

[0016]

As described above, according to the fish collection system of the fishway for a dam according to the present invention, fish can be continuously collected only by the pump operation for operating the circulating water tank, so that labor saving in management can be achieved. At the same time, maintenance is economical.

Also, in the present invention, since the fish collecting tank is provided, the transport equipment can be operated at an arbitrary time, so that efficient and economical operation is possible.

In this embodiment, the transport equipment is described as an elevator type or the like. However, in the case of a lock room type, the transfer tank may not be necessary and may be poured into the lock room.

[Brief description of the drawings]

FIG. 1 is an overall schematic view (plan view) showing an embodiment of a fish collecting facility according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an arrow BB diagram of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fishway 5 Running water tank 6 Simulated overflow weir 8 Steep slope 9 Pumping equipment 10 Fish collection tank 11 Delivery tank 12 Gate

Claims (1)

(57) [Scope of request for utility model registration] 1. A fish collecting facility for guiding upstream fish from a downstream river of a dam to a reservoir upstream of said dam, said fish collecting device being provided at an upstream end of a fishway provided on the downstream river side. A circulating water tank installed continuously, a pseudo overflow weir provided near the end of the circulating water tank, and water in the circulating water tank,
A pump facility that creates a flow from the simulated overflow weir to the fishway and creates a water flow from the upper part to the lower part of the simulated overflow weir, and is continuously installed from the upper part of the simulated overflow weir through a steep slope with a downward slope. A fish collection system for a fishway for a dam, comprising: a fish collection tank provided; and a delivery tank connected to the transport facility, which is continuously arranged through the fish collection tank and a gate.