JP2004263469A - Simple sluice gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple sluice gate which can be installed with ease inexpensively. <P>SOLUTION: The simple sluice gate is formed of a fixed foundation 4 having two receiving parts 4a erected at both sides of a channel 20 and a floating water gate 5 rotating around a rotary support point using one of the receiving parts. The receiving parts 4a have a support face facing the high water level side. The floating water gate 5 has a length supported by two receiving faces support face, the inside is formed with a hollow floating body, the floating water gate 5 is set afloat on the channel in the opened condition of the channel 20, when closing the channel, the floating water gate 5 is turned around the rotary support point, ballast water is filled in the state that the two gates are set close to each other or abutted on to settle down. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a floodgate that can be installed in rivers, ports and the like with simple construction and at low cost.
[0002]
[Prior art]
Waves rise in rivers and harbors like typhoons and windy days, but on such days, the water surface rises near the mouth of the river and in the harbor due to storm surges, and nearby buildings and moorings rise. Often affects equipment. In order to prevent such effects during storm surges, tide gates are provided at the mouths of rivers and at the entrances and exits of ships at ports and harbors. The tide gates form a fixed foundation made of concrete with a U-shaped cross section on both sides of the waterway at the entrance and exit of the port and the bottom of the water, and this opening is closed or opened. A floodgate is provided.
[0003]
However, this sluice uses large-scale mechanical equipment, and a door that sinks by its own weight is placed over the entire length of the opening, and this is lifted up by a large hoisting device or settled by its own weight. is there. Therefore, the construction of this method requires the maintenance of the ground, the production of a fixed sluice gate and the lifting and lowering device for the door body, and the installation work for this, which has the disadvantage of requiring long-term construction and high construction costs. Was.
[0004]
Further, a gravity-bottomed structure using a concrete floating body that also serves as a storage such as an oil storage platform has been proposed (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-59-44473
[Problems to be solved by the invention]
In the case of a general sluice using large-scale mechanical equipment, construction of the sluice requires the maintenance of the estuary and harbor grounds, the manufacture of fixed foundations and the lifting and lowering of doors, and the installation work. And the disadvantage of requiring high construction costs.
[0007]
In addition, the invention described in Patent Document 1 merely proposes a gravity-bottomed concrete structure or a large bottom-bottomed tank. It does not propose a structure that can be applied to a tide gate, etc., which avoids the effects of flooding, or which is greatly open to facilitate entry and exit and discharge of water.
[0008]
SUMMARY OF THE INVENTION The present invention provides a simplified floodgate which can eliminate all the disadvantages of the prior art, such as a long construction period of the floodgate and a high construction cost.
[0009]
[Means for Solving the Problems]
The simple sluice gate according to the present invention for achieving the above object is configured as follows.
[0010]
1) A fixed foundation having two receiving portions erected on both sides of a water channel, and a floating gate that rotates with one of the receiving portions as a fulcrum, and the receiving portion is a support surface facing the high water level side. The floating gate has a length supported under the two receivers, and the inside is formed of a hollow floating body.The floating gate is floating on the water channel when the water channel is open, and closes the water channel. In this case, the floating sluice gate is pivoted with the pivot point as a fulcrum, and is settled while approaching or in contact with the vicinity of the two receiving portions.
[0011]
2) The floating gate is a hollow floating body made of a steel plate, which is configured to be filled with water and settle.
[0012]
3) The floating gate is moored along one of the channel walls when the gate is open, and is configured to be turned to a fixed wall by a towed boat or a rope when the gate is closed.
[0013]
4) The two receiving portions planted on both sides of the water channel are characterized in that they are formed to have an L-shaped cross section and receive both ends of a floating gate that receives water pressure when the gate is closed.
[0014]
In the present invention, the floating gate is constituted by a hollow floating body made of a steel plate, and the floating gate is normally floated at a position where it does not obstruct the flowing water of the river or the entry / exit of the ship at the port, and before the high tide. The floating body is rotated to be supported by the receiving portions on both sides of the fixed foundation, and is configured to receive the water pressure on the high water level side.
[0015]
Since the floating gate is a floating body made of a steel plate, it can be cut and welded at a factory, and a prefabricated method of assembling locally can be easily implemented. Further, since this is a large-sized structure, it can be used as a storage room for necessary equipment and a rest room for workers and the like.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a plan view of a simple floodgate according to the present invention, and FIG. 2 is a front sectional view of the same.
[0017]
The simple sluice gate 1 according to the present invention includes a bank 2, 3 on both sides of a water channel 20, a concrete fixed foundation 4 formed on a part of the bank 2, 3, and a turn with respect to the fixed foundation 4. It consists of a floating gate 5 that moves and opens and closes.
[0018]
The fixed base 4 is formed in an L-shape in plan view, and includes a receiving portion 4a having a receiving surface facing the high water level side of the water channel 20, and a connecting portion 4b connecting between the receiving portions 4a as shown in FIG. It is formed in a U-shape. In addition, the embankments 2 and 3 on both sides of the waterway 20 are a bank of a river, a bank of a harbor, and the like, and may be an existing structure or newly provided one. The water channel 20 between the embankments 2 and 3 has a high water level on the water surface HWL side.
[0019]
The floating gate 5 is a box-shaped floating body made of a steel plate. For example, assuming that the width L (width of the water channel) of the opening of the fixed foundation 4 is 39 m, for example, the length of the floating gate 5 used for this M is a hollow body having a length of 1 m and a length of 40 m, a width B of 4.5 m and a height H of 8.5 m. Since the floating gate 5 is settled by filling the ballast water at the closed position of the gate, a pouring / draining pump is disposed near the pivot point, or a pouring / draining pump is installed in the machine room inside the floating gate 5. This pump may be installed on the fishing boat side where the boat is towed.
[0020]
Piles 7a and 7b are provided in the vicinity of the fixed foundation 4 so as to regulate the position of the floating gate 5 in a closed state. The pile 7a is also used for mooring the floating gate 5. As shown in FIG. 4, the pile 7a is moored by the mooring line 8 between the floating gate 5 and the pile 7a so as not to flow out.
[0021]
The pile 7c provided in the vicinity of the embankment body 2 has a low water level LWL and is used when the floating gate 5 is moored, and a fixing metal 9a is provided between the floating gate 5 and the pile 7c. , 9b (or may be a chain). In addition, since the upper fixing metal 9a is always located on the water surface, it can be easily operated and unlocked from above the embankment. However, the connecting metal 9b below the water is connected to an appropriate lever or string. Make it possible to operate the opening from the water surface.
[0022]
FIG. 3 shows a state where the water surface is moored along the embankment body 2 in a state of the low water level LWL. The pile 7c is located at the moving end of the floating gate 5, and the floating gate 5 is positioned. I have.
[0023]
FIG. 4 shows a state in which the floating gate 5 is moved to the position of the fixed foundation 4 and settles to close the water gate in the case of the high water level HWL at the time of high tide as shown in FIGS. 1 and 2. Reference numeral 11 denotes a fender arranged between the floating gate 5 and the receiving portion 4a, and a fender 12 having a round cross section is also provided between the lower surface of the floating gate 5 and the upper surface of the receiving portion 4a. When the simple floodgate 1 is closed, the water pressure is received between the receiving portion 4a and the floating floodgate 5 via the fenders 11 and 12.
[0024]
In the case of a normal low water level LWL, a floating gate 5 is moored at the position shown by the dotted line in FIG. 1 as shown in FIG. 3, and in the case of a river, flowing water (water flows on the opposite side of the arrow in FIG. 1). ), And in the case of a harbor, it is in a position where it does not interfere with entry and exit of ships.
[0025]
When it is necessary to close the gate before the occurrence of the storm surge, the fixing brackets 9a, 9b or the chain hanging on the stake 7c are removed. Then, the floating gate 5 is turned by a fishing boat or boat as shown by the arrow F, and when the door reaches the closed position shown by the solid line in FIG. 1, the valve provided below the drafting surface (not shown) is opened or the pump is operated. Ballast water is injected into the lever 5 and is sunk as shown in FIGS. 1 and 2 to close the simple sluice 1. In such a state that the floating gate 5 is settled and settled down at the predetermined position of the fixed foundation 4 and the floodgate 1 is closed, the floating gate 5 is fixed via the two fenders 11 and 12. The high water level HWL generated on the high tide side due to the weight being received by the receiving part 4a and the connecting part 4b of the foundation 4 is cut off from the low water level LWL side in the opposite direction.
[0026]
In this manner, the simple floodgate 1 is closed by immersing the floating floodgate 5 to prevent damage at the time of the high water level HWL. Further, when the high water level HWL is lowered and becomes a safe state, the ballast water filled in the floating gate 5 is drained by a pump and floated, towed by a fishing boat or a boat, To move from the solid line state to the dotted line state in FIG. Then, it is moored at a predetermined mooring position with the fixing hardware 9a, 9b or a chain.
[0027]
The pump for draining the ballast water injected into the floating gate 5 is preferably provided in an operation room provided in the cavity of the floating gate 5, but a pump chamber provided near the pivot of the floating gate 5 is preferable. It is also possible to use a pump mounted on a fishing boat or boat in some cases. It should be noted that the drainage of the ballast water requires a considerable amount of time, so it is necessary to operate the drainage pump in consideration of the timing of opening the gate.
[0028]
【The invention's effect】
The simple floodgate 1 according to the present invention includes a fixed foundation 4 having two receiving portions 4a planted on both sides of a water channel 20, and a floating floodgate 5 that rotates about one of the receiving portions 4a as a pivot. The receiving part 4a has a supporting surface on the high water level side HWL, and the floating gate 5 has a length that can be supported by the two receiving parts 4a, and is formed of a hollow floating body.
[0029]
When the waterway 20 is open, the floating gate 5 is floated on the waterway 20 (storage area beside the closed area). When the water channel 20 needs to be closed, the floating gate 5 is pivoted about the pivot point, and ballast water is injected while approaching or in contact with a closed area near the two receiving portions 4a. Let it settle. At the time of opening the gate, the ballast water inside the floating gate 5 is drained by a pump and re-emerged, and then rotated again by towing by a ship, returned to the storage area, and stored.
[0030]
According to the present invention, since the simple floodgate 1 is composed of the fixed foundation 4 and the floating floodgate 5, there is no need for large-scale mechanical equipment unlike the conventional apparatus.
[0031]
Civil works and installation of floodgates can be performed extremely easily, so that installation costs are significantly lower than conventional floodgates.
[0032]
Since it does not significantly deform natural terrain, it can be easily installed on any terrain.
[Brief description of the drawings]
FIG. 1 is a plan view of a simple floodgate according to the present invention.
FIG. 2 is a front view of FIG.
FIG. 3 is a diagram illustrating a floating state of a floating gate;
FIG. 4 is a sectional view taken along line XX in FIG. 1, showing a closed state of the floating gate;
[Brief description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Simple floodgate 2, 3 Embankment body 4 Fixed foundation 4a Receiving part 4b Connection part 5 Floating floodgate 7a, 7b, 7c Pile 9 Connection metal fittings 11, 12 Fender

Claims (4)

It consists of a fixed foundation having two receiving parts planted on both sides of the water channel, and a floating gate that rotates with one of the receiving parts as a fulcrum, and the receiving part has a support surface facing the high water level side. , The floating gate has a length supported by the two receiving surfaces, the interior is formed of a hollow floating body,
The floating gate is floating on the waterway when the waterway is open, and when closing the waterway, the floating watergate is rotated with the rotation fulcrum as a fulcrum to approach or contact the vicinity of the two receiving portions. A simple sluice gate configured to sink in a state. The simple sluice gate according to claim 1, wherein the sluice gate is a hollow floating body made of a steel plate, and is configured to be filled with water and settle therein. The floating gate is a floating mooring line along one of the waterway walls when the gate is open, and is configured to be turned to a fixed wall by towing or a rope by a boat when the gate is closed. The simple sluice according to 1. 2. The simple floodgate according to claim 1, wherein the two receiving portions planted on both sides of the waterway are formed to have an L-shaped cross section and receive both ends of the floating gate in a closed status of the floodgate. 3.

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