JP2009228330A - Sluice gate against tsunami-high tide - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sluice gate against tsunami-high tide can be more simply and inexpensively installed when compared with its installation in accordance with the conventional technology, be stored during its nonuse to prevent a view including it from being impaired, and allow a ship to pass through it without causing trouble. <P>SOLUTION: This sluice gate is composed of a screen like door part 1 made of a flexible material and a supporting part for supporting the door part 1 to shut down a water channel from the sea while it is erected. The supporting parts are poles 2 or the other columnar objects installed on both sides of the water channel, have joint parts such as hinges 3 or the like, respectively, and can be laid on their sides. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sluice for preventing tsunami and storm surge.

  The storm surge that occurred in Toyama Bay in February 2008 caused many people to escape, and more than two hundred houses were damaged by flooding on the floor and under the floor. The momentum of tsunamis and storm surges can sometimes be tremendous, flooding the land by crossing the embankment or backflowing the river, and causing great damage to ground facilities such as houses.

  Currently, sluices are installed in many rivers, spillways, canals, etc. to prevent the seawater from going up due to tsunami and storm surge. Various types of gates have been adopted depending on natural conditions, the use of rivers, the importance of protected areas, and so on. Most of them are roller gates that move up and down by attaching rollers on both sides of the plate-like gate, but some gate gates have a double-split miter gate, and a sector gate that opens and closes by rotating a bowl-shaped door. Has been.

However, the conventional roller gate requires a high gate pillar to support the gate and a large-scale device for opening and closing because of its structure, so the problem is that the entire sluice gate becomes very large. It was happening. In addition, when the gate is lifted, it is easily affected by wind and earthquakes, and the gate cannot be lifted without limit.
Even in other types of sluices, there are problems such as foreign objects being caught when closed, weak against impact, and water level differences must be taken into account when opening and closing.

Therefore, as a new sluice related technology to solve the above problems, it is not necessary to install gate pillars and management bridges, and it is possible to reduce the maintenance work and construction costs, and the gates for dredging pipes on river banks (patent document) 1), flap gate for pipes that can be easily opened and closed even with a small amount of drainage, and the amount of outflow can be calculated and foreign matter is not caught between them (see Patent Document 2). A water gate device (see Patent Document 3) for flood protection was devised.
Japanese Patent No. 3008339 Japanese Patent No. 3425695 Japanese Patent No. 3770554

  However, large-scale tsunamis and storm surges that required the sluice to be closed did not occur frequently, and the sluice was not used frequently despite the high initial construction costs, and there was a problem in terms of cost performance. In addition, although the scale of the sluice was able to be significantly reduced, some of the sluice facilities remain visible regardless of whether they are in use or not, so the waterside landscape that has been increasing in recent years There was a problem that it was not possible to respond to the considerations.

  An object of the present invention is to provide a tsunami and storm surge countermeasure sluice that can be easily installed at a lower cost than conventional technology, can be stored so as not to harm the landscape when not in use, and can also navigate a ship without hindrance. That is.

  In order to solve the above problems, the invention described in claim 1 is a curtain-shaped door portion made of a flexible material, and a support portion that supports the door portion while standing upright so as to block the water channel and the sea. It is characterized by consisting of.

  The invention described in claim 2 is the tsunami / storm surge countermeasure sluice described in claim 1, characterized in that the support part is a pole or other columnar object provided on both sides of the waterway.

  A third aspect of the present invention is the tsunami / storm surge countermeasure gate according to the first or second aspect, wherein the support portion has a joint portion such as a hinge and can be laid down.

  The invention described in claim 4 is the tsunami / storm surge sluice according to any one of claims 1 to 3, characterized in that the door is stored by being submerged in the bottom of the water.

  According to the present invention, since the gate is a curtain and does not require a large-scale device for its movement, it does not require much installation space and the construction cost can be reduced.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a configuration of an embodiment of a tsunami / storm surge countermeasure sluice to which the present invention is applied. 1 is a curtain, 2 is a pole, and 3 is a hinge structure.

  The curtain 1 serving as a door serves as a gate of a sluice gate and is made of a flexible material that can be freely deformed. Even if it is a flexible material, a material having strength sufficient not to be broken or bent when a tsunami or storm surge hits, as described later, is used.

  As shown in FIG. 1, the pole 2 as a support portion is for supporting the curtain 1 upright by supporting both left and right ends of the curtain 1. Further, the hinge structure 3 at the lower end can be laid down (left and right in FIG. 1).

  As shown in FIG. 2, poles 2 that serve as support portions for the sluice gates are erected so as to fit in vertical guide grooves 12 provided on the quay wall 11, one on each bank near the river mouth. In addition, both left and right ends of the curtain 1 which is a horizontally long rectangular door portion are attached to the pole 2, and the curtain 1 is set up at the mouth of the river so as to block the river and the sea. As for the size of the curtain 1, the width may be equal to or greater than the estuary width, and the height may be equal to the height of the gate when a conventional sluice is provided in the river. Further, when the river width is very wide and it is difficult to make the curtain 1 upright only with the poles 2 on both sides, the pole 2 may be provided at an intermediate position.

  When a tsunami or storm surge occurs, seawater rushes to the embankment and estuary, but the curtain 1 built at the estuary by the pole 2 is longer than the estuary width and is bent to the river side. It can receive and attenuate the impact of the wave that has flowed in. At this time, a part of the seawater may get over the curtain 1 or may pass through the gap below, so it will flow back slightly. However, even if it is submerged, the wave momentum is sufficiently attenuated. It can be kept to a minimum, and it is possible to secure enough time for people to blame.

  Further, the curtain 1 may be capable of transmitting water. Although not shown here, for example, a hole may be provided on the surface of the curtain 1, and the seawater colliding with the curtain 1 may be released from the hole to attenuate the wave force. The size and number of the holes are arbitrary as long as the strength of the curtain 1 is not deteriorated, and the permeability of the curtain 1 can be adjusted by changing these.

  By the way, the base of the pole 2 is a joint that can be laid down by the hinge structure 3 as described above. Therefore, when there is no fear of tsunami or storm surge, the two poles 2 are connected to the river as shown in FIG. It is possible to lay down on the riverbed and store it facing each other toward the center. At this time, since the curtain 1 attached to the pole 2 can be bent freely, when the pole 2 is collapsed, it is folded in accordance with the movement of the pole 2 and is laid down on the river bank together with the pole 2. It has become. In addition, when the pole 2 is brought down, the sluice facilities are completely hidden in the water, so the waterside landscape is very good and it is easy for the ship to go back and forth through the river mouth.

In the above embodiment, poles are set up on both banks of the estuary and the curtain is extended. When not in use, the curtain is laid sideways facing the bottom of the water like a circuit breaker. It is not limited to the above, but other pillars such as concrete pillars are used for the support instead of the pole, the curtain is supported from above and below, one pole is moved horizontally, and the curtain is moved to the shore and stored. The form of etc. may be sufficient.
Further, the direction in which the pole is tilted, the power, etc. are arbitrary, and other specific details such as the detailed structure can of course be changed as appropriate.

It is a front view which shows the structure of one Embodiment of the tsunami and storm surge countermeasure sluice to which this invention is applied. It is an image figure which shows a mode that the reverse flow to the river of a tsunami and a storm surge is prevented using this invention. It is an image figure which shows the mode of storage of the sluice at the time of non-use of this invention.

Explanation of symbols

1 Act (door)
2 pole (supporting part)
3 Hinge structure (joint)
11 Quay 12 Guide groove

Claims (4)

  A tsunami and storm surge countermeasure sluice comprising a curtain-like door portion made of a flexible material and a support portion that supports the door portion while standing upright so as to cut off the waterway and the sea.   The tsunami and storm surge countermeasure sluice according to claim 1, wherein the support portion is a pole or other columnar object provided on both sides of the water channel.   The tsunami / storm surge countermeasure sluice according to claim 1 or 2, wherein the support portion has a joint portion such as a hinge and can be laid down.   The tsunami and storm surge prevention sluice according to any one of claims 1 to 3, wherein the door portion is stored by being submerged in a water bottom.

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