JP3160122B2 - Elevating fishway gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up-and-down fishway gate provided in a dam, a river, a waterway or the like so that fish can go upstream between water surfaces.

[0002]

2. Description of the Related Art Generally, when a sluice gate is provided in a river or a waterway to block upstream water, a low partition wall is provided at a predetermined interval at a bottom of the waterway in order to help fish to go upstream. A fishway provided with an undulating gate is constructed near the upstream side of the partition wall. 2. Description of the Related Art Conventionally, a fishway having a large fluctuation in water level is generally provided with a large-scale gate facility and a driving device for interlocking and raising and lowering each of the up-and-down gates (for example, see Japanese Utility Model Publication No. 60-32196).

[0003]

However, in the above-mentioned prior art, there is a problem that a driving device such as a hydraulic cylinder for raising and lowering each of the up and down gates in conjunction with the water level and a means for detecting and controlling the water level are indispensable. Further, the present invention has been made in view of the above situation, and an object of the present invention is to provide a fishway which does not require a driving device such as a hydraulic cylinder and a water level detecting / controlling means and which is easy to maintain. There is a gate to offer.

[0004]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, the present invention relates to an up-and-down fishway gate in which an overflow gate body suitable for fish run-up is provided on the upstream side of a plurality of partition walls provided at an arbitrary interval in a water flow direction at the bottom of a waterway or the like so as to be able to move up and down. And
The gate body can be moved up and down by using a guide provided on a side wall of a water channel or the like as a guide, and a float protruding upstream is connected to the gate body to be integrated, and the upstream end of the float is connected to the bottom of the water channel or the like. It is supported and guided by a non-overflow pier that stands upright, and the gate body and the float rise and fall integrally following the water level.

Further, the present invention is characterized in that the float is connected to the center of the gate main body, and the pier is also erected at the center on the bottom of a water channel or the like corresponding to the float. Further, the present invention is characterized in that the float is connected to both ends in the channel width direction of the gate body, and the pier is provided on the side wall of the channel corresponding to the float.

[0006]

According to the present invention, the gate body is driven up and down by the buoyancy of the float which rises and falls following the water level fluctuation, and the upstream water appropriately overflows following the water level, so that the predetermined overflow water depth is increased. It is secured and the fish run up easily.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the drawing, (1) is a fishway waterway, the bottom of which is substantially flat, a plurality of bulkheads (3) are provided at predetermined intervals in the water flow direction, and the downstream side of the bulkhead (3) at the downstream end. Are provided with fixed weirs (4) at arbitrary intervals. Each partition (3) is made of steel or concrete and has the same height, a non-overflow portion (3A) is provided at the center, and the fixed weir (4) is considerably higher than the partition (3). At the same time, a non-overflow pier (4A) is formed in the center.

[0008] Further, at the lower part of each partition (3) and fixed weir (4), submerged holes (5) and (6) are provided, respectively, so that fishes going up along the channel bottom (2) can be easily. It is possible to go up. Furthermore, in each partition wall (3), the central portion (3A) in the channel width direction is higher than the overflow portions (3B) and (3C) on both the left and right sides, and the overflow portions (3B) and (3C) on both the left and right sides. 1
The height is higher and the other is lower, so that the overflow water depth differs between the left and right. The overflow portions (4B) and (4C) on both left and right sides of the fixed weir (4) are also changed in height so that the overflow water depth is different.

[0009] Door grooves (7) and (8) are respectively provided on the both channel side walls (1A) in the vicinity of the upstream side of the partition wall (3), and a guide (9) serving also as a door stop is provided on the upstream side. , (10)
However, guides (11), (1
2), (13) and (14) are provided. In addition, a non-overflow pier (15) is erected at a predetermined interval in the center of the waterway bottom (2) on the upstream side of the partition wall (3), and a guide rail (16) is provided on a downstream side surface thereof. .

(17) is a float, (18), (19)
Is an overflow type gate body, and the float (17) is a rectangular parallelepiped and is disposed between the non-overflow portion (3A) of the partition (3) and the pier (15), and is provided on both left and right sides of the float (17). The main body of the gate (1
8) and (19) project downward from the lower end of the float (17) and are rigidly integrated so as to be flush with the downstream side surface of the float (17), and the upstream side of the float (17). A guide roller (20) is mounted on the end face corresponding to the guide rail (16).

The ends of the gate bodies (18) and (19) on the side wall of the water channel (1A) face the door grooves (7) and (8) and guide roller mounting members (21) and (2).
Guide rollers (23), (24), (2)
5), (26), (27), and (28) are attached, and these rollers (23) to (28) are respectively provided with door grooves (7),
The guide (9) to (14) of (8) guides and supports the float (17), the gate (18),
(19) moves up and down integrally following the water level fluctuation.

The overflow end of the gate body (18) is made higher than the overflow end of the gate body (19) so that the overflow depth is different.
A rectifying plate (29) is provided above the door groove (7), (8) side end of 9).
(30) is protruded, and water blocking plates (31) and (32) are protruded downstream of both ends of the gate bodies (18) and (19), respectively, and the side portions fixed to both side walls (1A) of the water channel. Watertight rubber (3
3) and (34) are in contact.

The partition wall (3) has a central watertight rubber (35), (3
6) is mounted so as to contact the downstream end surface of the float (17), and the watertight rubbers (37) and (38) below the gate are located upstream of the upper ends of the overflow sections (3B) and (3C). The main body (18), (19) is attached so as to contact the downstream side surface. A manhole cover (39) is attached to the top end of the float (17). A stopper (40) is provided on the water channel bottom (2) immediately below the float (17) so that the float (17) comes into contact with the water at the lowest water level on the upstream side.

The float (17) and both gate bodies (1)
8) The weight of (19) is balanced by the buoyancy of the submerged part of the float (17), and the part above the water surface of the float (17) is opposed to the guide roller resistance and the watertight rubber resistance when the gate is raised. It is designed to be a driving float that exerts a driving force, and fine adjustment of the overflow water depth is performed by ballast.

According to the above embodiment, the gate body (1)
8) and (19) are based on the buoyancy of the float (17).
Following the water level on the upstream side, it rises and falls without power, the overflow water depth is automatically kept constant, and the float (17) and the gate bodies (18), (19) are guided by the guide rollers (20), (2).
3) to (28) are supported and guided to prevent run-out and perform a smooth ascending and descending operation.

According to the present invention, in addition to the above-described embodiment, the gate body is disposed at the center in the width direction of the water channel, and floats are integrally connected to both ends thereof. A guide roller is provided on the outside surface of the float on both sides or on the upstream and downstream sides of the outer end, and guides the piers standing upright on the waterway side wall or the bulkhead non-overflow part and the waterway side wall side. Can be provided to support and guide.
In this case, the gate body may be plate-shaped. The present invention is not limited to the above embodiment,
The design can be changed as appropriate, for example, the door ditch can be omitted, and the present invention can be applied to an inclined or stairway type waterway.

[0017]

As described above, according to the present invention, an overflow gate body suitable for fish run-up is provided upstream of a plurality of partition walls provided at arbitrary intervals in the water flow direction at the bottom of a water channel or the like. An ascending / descending fishway gate provided so as to be able to ascend and descend, wherein the gate body can be moved up and down by using a guide provided on a side wall such as a waterway as a guide, and a float protruding upstream is connected to the gate body to be integrated. , The upstream end of the float is supported and guided by a non-overflow pier erected on the bottom of a water channel or the like, so that the gate body and the float are integrally moved up and down following the water level. Therefore, power for driving hydraulic cylinders and the like, and means for detecting and controlling water level are not required, and there are no restrictions on the installation location, and it is ideal for places where the side wall of the waterway cannot be largely cut off. And easy maintenance It is possible to reduce the construction costs decrease.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is an enlarged plan view of a main part of the embodiment.

FIG. 7 is a sectional view taken along line EE of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fishway waterway 1A Side wall 2 Bottom part 3 Partition wall 9-14 Guide 15 Non-overlapping part 17 Float 18, 19 Gate body

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshiyuki Imanishi 677-2 Shimobuchi, Oyodo-cho, Yoshino-gun, Nara (56) References JP-A-2-279815 (JP, A) JP-A-6-264428 (JP, A ) Actually open sho 61-112040 (JP, U) Actually open sho 58-160930 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02B 8/08 E02B 7/26

Claims (3)

(57) [Claims] 1. An up-and-down fishway gate in which an overflow-type gate body suitable for fish run-up is provided at the upstream side of a plurality of partition walls provided at arbitrary intervals in a water flow direction at the bottom of a waterway or the like so as to be able to move up and down. The gate body can be moved up and down by using a guide provided on a side wall of a water passage or the like as a guide, and a float protruding upstream is connected to and integrated with the gate body, and the upstream end of the float is connected to the water passage. An ascending and descending fishway gate characterized in that it is supported and guided by a non-overflow pier erected on the bottom of the gate, etc., so that the gate body and the float rise and descend integrally following the water level. 2. The up-and-down fishway gate according to claim 1, wherein the float is connected to the center of the gate body, and the pier is also erected at the center on the bottom of a waterway or the like corresponding to the float. 3. The up-and-down fishway gate according to claim 1, wherein the float is connected to both ends of the gate body in the width direction of the waterway, and the piers are provided on the side wall of the waterway in correspondence with the float.