JP2017025610A - Water channel gate device and installation method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water channel gate device that is capable of reducing a flood from the outside of a bank at the time of freezing and is easy to install, and an installation method for the gate device.SOLUTION: A water channel gate device 100 is installed at a gate groove provided in a water channel. The water channel gate device 100 comprises gate bodies 122, 132, 142 comprising: frame bodies 125, 135, 145 on which water flow holes 112, 114, 116 are provided; and flaps 120, 130, 140 that are fitted on the frame bodies 125, 135, 145 to cover the water flow holes 112, 114, 116. The flaps 120, 130, 140 open in the direction to the outside of the bank and close in the direction to the inside of the bank. The plurality of gate bodies 122, 132, 142 are provided vertically. Locking the flaps 120, 130, 140 dams a flow in the water channel.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a waterway gate device and an installation method thereof.

  Xiamen and dredging pipes are box (including pipe dredging) structures that are installed across the embankment and play a role of ensuring water flow from the inside of the embankment to the river. In addition, doors (gates) are provided on the outside of the Xiamen and Yodo pipe embankments in order to prevent backflow of river water to the inside of the dike during an emergency flood such as a tsunami, storm surge, and guerrilla heavy rain ( FIG. 7).

  The gate administrator is required to operate the gate during an emergency increase of water, but from the perspective of aging the commissioned operator and ensuring the safety of the operator during an emergency increase of water, the water pressure will depend on the river level and flow rate. As a result, gates that open and close automatically have been required.

  In Patent Document 1, in a flap gate having a door body that swings due to a difference in internal and external water pressure at the opening end of a water channel, the balance of the moment of the entire gate can be finely adjusted, and a sufficient gap is provided between the door body and the opening end. A flap gate that is supported to have a good response to fluctuations in water level even in a low water level state is disclosed.

JP 2012-57322 A

  However, in the flap gate of Patent Document 1, ice and snow accumulate at a certain height at the bottom of the water channel during icing in the winter period, so that the gate may be lifted and remain open. In this case, at the time of emergency water increase, a large amount of river water flows into the bank from the opening (gap) on the side of the gate hole, leaving a problem in terms of water stopping effect. In addition, in order to install the flap gate of Patent Document 1, not only the gate body but also peripheral equipment such as hoisting equipment is required at the same time, and a large gate needs to be installed by crane operation. The installation cost is high and the construction period is long.

  The present invention has been made in view of the above circumstances, and can provide a waterway gate device that can reduce the inundation from the outside of the bank during freezing and can be easily installed, and a method for installing the same. Objective.

In order to achieve the above object, a waterway gate apparatus according to a first aspect of the present invention includes:
A waterway gate device installed in a doorway provided in a waterway,
A gate body comprising: a frame body provided with a water flow hole; and a flap attached to the frame body and closing the water flow hole,
The flap opens in the direction of the outer bank, closes in the direction of the inner bank,
A plurality of the gate bodies are provided in the vertical direction,
Dam the waterway by locking the flap,
It is characterized by that.

  For example, the flap is provided so as to be openable and closable outside the bank of the frame.

The installation method of the waterway gate device according to the second aspect of the present invention is as follows.
A gate body comprising: a frame body provided with a water flow hole in a door groove provided in the water channel; and a flap that opens in a direction toward the outside of the bank and closes in the direction toward the inside of the bank, and that is attached to the frame body and closes the water hole. Fitting process,
Providing a plurality of the gate bodies in the vertical direction;
including.

  For example, the flap is provided so as to be openable and closable outside the bank of the frame.

  ADVANTAGE OF THE INVENTION According to this invention, the inundation from the bank outer side at the time of icing can be reduced, and the water gate apparatus which can be installed simply, and its installation method can be provided.

It is the schematic diagram which looked at the gate apparatus for waterways which is one Embodiment of this invention from the bank outer side. (A) is a schematic diagram showing the state which the upper stage flap, the middle stage flap, and the lower stage flap closed, (b) is a schematic diagram showing the state which the upper stage flap, the middle stage flap, and the lower stage flap opened. It is typical sectional drawing of the lower stage flap vicinity of the gate apparatus for waterways which is one Embodiment of this invention. (A) is typical sectional drawing showing the state where a lower flap was closed, and (b) is a typical sectional view showing the state where a lower flap was opened. It is a typical top view of the gate device for waterways which is one embodiment of the present invention. It is a figure which represents typically the state which installed the gate apparatus for waterways which is one Embodiment of this invention in the waterway. (A) is a figure which represents typically the state at normal time, (b) is a figure which represents typically the state at the time of emergency water increase, such as a tsunami, a storm surge, and guerrilla heavy rain. It is a figure which represents typically the state at the time of freezing of the gate apparatus for waterways which is one Embodiment of this invention. It is a figure which represents typically the state at the time of icing of the conventional flap gate. It is a figure which represents typically the state which provided the conventional flap gate in the bank outer side of the main body gate.

(1. Waterway gate device)
A waterway gate apparatus 100 according to an embodiment of the present invention will be described in detail.

  As shown in FIG. 1, the waterway gate device 100 according to an embodiment of the present invention includes an upper gate body 122, an intermediate gate body 132, and a lower gate body 142, and these three gate bodies are vertical. It is connected in the direction.

  A waterway gate device 100 according to an embodiment of the present invention is installed in a waterway (a box (including a pipe)) provided in a lock gate and a lock pipe, and as shown in FIG. It is used for the water channel inside the bank rather than the main gate 60 of the gate and the culvert pipe. More specifically, as shown in FIG. 3, the waterway gate device 100 is installed in a cornering groove 10 provided on both side walls 20 of the waterway. The waterway gate device 100 normally flows water from the inside of the bank to the outside of the bank (FIG. 4 (a)). By locking the water, it plays a role of blocking river water flowing from the outside of the bank to the inside of the bank (FIG. 4B). As described above, the waterway gate device 100 has a function of a flap gate that automatically opens and closes with water pressure in accordance with the water level and flow rate of the river. Can be used as

  As shown in FIG. 1, the upper gate body 122 includes an upper frame body 125 and an upper flap 120 attached to the upper frame body 125 via four hinges 150, and the upper flap 120 is an upper frame body. It attaches so that the upper stage flowing water hole 112 provided in 125 may be plugged up (FIG.1 (b)). Similarly, the middle stage gate body 132 includes a middle stage frame body 135 and a middle stage flap 130 attached to the middle stage frame body 135 via four hinges 150, and the middle stage flap 130 is provided on the middle stage frame body 135. It is attached so as to block the middle stage flowing water hole 114 (FIG. 1B). Similarly, the lower gate body 142 includes a lower frame body 145 and a lower flap 140 attached to the lower frame body 145 via four hinges 150. The lower flap 140 is provided on the lower frame body 145. It is attached so as to close the lower flow hole 116 formed (FIG. 1B). In addition, at the edges of the upper-stage water holes 112, the middle-stage water holes 114, and the lower-stage water holes 116 (the surfaces of the upper-stage frame body 125, the middle-stage frame body 135, and the lower-stage frame body 145, respectively), 137 and 147 are attached (FIG. 1B). When the upper flap 120, the middle flap 130, and the lower flap 140 are closed, the water stop rubbers 127, 137, and 147 are formed on the edges of the upper flow hole 112, the middle flow hole 114, and the lower flow hole 116 at the upper flap 120, The middle flap 130 and the lower flap 140 are in close contact with each other and play a role of preventing water leakage.

  The upper flap 120, the middle flap 130, and the lower flap 140 play a role of blocking river water flowing from the outside of the bank into the bank. As shown in FIG. 2-4, the upper flap 120, the middle flap 130, and the lower flap 140 are attached to the outer surface of the upper frame 125, the middle frame 135, and the lower frame 145 so as to be openable and closable. .

  Details of the opening / closing operation of the upper flap 120, the middle flap 130, and the lower flap 140 will be described by taking the lower flap 140 as an example. The lower flap 140 is welded to a hinge 150 attached to the outer surface of the lower frame 145 as shown in FIG. 2 (a), and opens in the outer direction of the dam as shown in FIG. 2 (b). , It can be closed toward the inside of the bank so as to close the lower flow hole 116. In the state where the lower flap 140 is closed (FIG. 2A), the surface of the lower flap 140 inside the bank is brought into contact with and stopped by the water stop rubber 147 attached to the lower frame 145. When water flows from the inside of the bank, the lower flap 140 receives the water flow and automatically opens to the outside of the bank by water pressure (FIG. 2 (b)). At the time of emergency water increase, the lower flap 140 is automatically closed by the water pressure in response to the flow of water from the outside of the bank (FIG. 2A), and the river water flowing into the bank from the outside of the bank is blocked. The same applies to the upper flap 120 and the middle flap 130.

  In the waterway gate device 100, as described above, the upper gate body 122, the middle gate body 132, and the lower gate body 142 are connected in three stages in the vertical direction (FIG. 1). Used by fitting. More specifically, as shown in FIG. 3, both side ends of the upper gate body 122, the middle gate body 132, and the lower gate body 142 that overlap in the vertical direction are fitted into the door groove 10, and the lower gate body 142. It is installed in the door channel 10 of the water channel so that the lower end surface is in contact with the bottom surface of the water channel. In order to prevent water leakage from the outside of the bank to the inside of the bank by bringing both side ends of the upper gate body 122, the middle gate body 132, and the lower gate body 142 into close contact with the door groove 10, the upper frame body 125 and the middle stage frame body 135 are used. And the water stop rubber | gum 128 is each affixed on the surface inside the bank of the both ends of the lower frame body 145 (FIG. 3).

  On the lower end surfaces of the upper frame body 125, the middle frame body 135, and the lower frame body 145, water-stopping rubber (not shown) is attached. Accordingly, the lower end surface of the upper gate body 122 is in close contact with the upper end surface of the intermediate gate body 132, the lower end surface of the middle gate body 132 is in close contact with the upper end surface of the lower gate body 142, and the lower end surface of the lower gate body 142 is the water channel. It is possible to prevent water leakage from the outside of the bank to the inside of the bank.

  In the lower flap 140, as shown in FIG. 1, chamfered portions 140a are formed at both ends of the lower portion in accordance with the shape of the haunch portion formed on the bottom surface of the water channel. Further, each member (excluding the water stop rubber) of the waterway gate device 100 is subjected to rust prevention treatment.

  A state of the waterway gate device 100 according to an embodiment of the present invention during normal times, during emergency water increase, and during icing will be described.

  During normal times, water flows from the inside of the dike to the outside of the dike. As shown in FIG. 4A, the middle flap 130 and the lower flap 140 are automatically opened by the water pressure in the outer wall direction in response to the water flow from the inside of the bank, so that the water flows through the middle stage water hole 114 and the lower stage water hole 116. Go through and flow outside the bank. When the amount of water flowing from the inside of the bank is small, only the lower flap 140 is opened, and the water flows to the outside of the bank only through the lower water flow hole 116. If there is a lot of water flowing from the inside of the bank, all of the upper flap 120, the middle flap 130 and the lower flap 140 are opened, and the water passes through the upper stage water hole 112, the middle stage water hole 114 and the lower stage water hole 116, and It flows outward.

  At the time of emergency water increase such as tsunami, storm surge, guerrilla heavy rain, etc., as shown in FIG. 4 (b), the upper flap 120, the middle flap 130 and the lower flap 140 are subjected to water pressure toward the inside of the dam due to the flow of water from the outside of the levee. Automatically closes and blocks the water from the outside of the bank.

  At the time of icing, as shown in FIG. 5, ice and snow accumulate at the bottom of the water channel to the height of icing height H, and the lower flap 140 is lifted and remains open with the ice and snow. As shown in FIG. 6, in the conventional flap gate 50, when ice and snow accumulate at the bottom of the water channel to the height of the ice formation height H, the flap gate 50 is lifted and remains in an open state integrally with the ice and snow. Since the opening (gap) on the side of the gate hole 52 is large, a large amount of water has flowed from the outside of the bank to the inside of the bank at the time of emergency water increase. In the waterway gate device 100 according to one embodiment of the present invention, as shown in FIG. 5, when the ice is frozen, that is, when ice and snow accumulates at the bottom of the waterway to the height of the ice height H, the state is lifted and left open. It is only the lower flap 140 that becomes. In this way, when the lower flap 140 remains open, water flows into the bank from the lower flow hole 116 at the time of emergency water increase, but the side opening of the lower flow hole 116 is small and closed. Since the upper flap 120 and the middle flap 130 reliably dam the water, only a small amount of water flows into the bank through the small opening portion of the lower flow hole 116. Thus, in the waterway gate apparatus 100, since the opening part at the time of icing is small, the risk of the inundation from the bank outer side at the time of emergency water increase can be reduced.

(2. Installation of waterway gate device)
The installation method of the waterway gate device 100 according to the embodiment of the present invention is as follows.
(A) a step of fitting a gate body in a doorway provided in a waterway;
(B) providing a plurality of gate bodies in the vertical direction;
including.

  The gate body used in the step (a) is, for example, the lower gate body 142 described above, and the lower gate body 142 and the lower frame body 145 provided with the lower water flow holes 116 as described above, A lower flap 140 attached to the lower frame body 145 and closing the lower flow hole 116, which is opened and closed in the bank inner direction. The lower flap 140 is provided on the outside of the bank of the lower frame 145 so as to be openable and closable as described above.

  In the step (b), for example, the middle gate body 132 (same as described above) is placed on the lower gate body 142, and the upper gate body 122 (same as above) is further placed on the middle gate body 132. A plurality of gate bodies are provided in the vertical direction by mounting.

  An example of an installation method of the waterway gate apparatus 100 will be described.

  First, the lower gate body 142 is fitted into the door groove 10 by being dropped from the upper part of the door groove 10 with the surface on which the lower flap 140 is attached as the outside of the bank, and is placed on the bottom surface of the water channel. Next, similarly, the middle gate body 132 is fitted into the door groove 10 with the surface on which the middle flap 130 is attached positioned outside the bank, and placed on the lower gate body 142. Finally, similarly, the upper gate body 122 is fitted into the door groove 10 with the surface to which the upper flap 120 is attached positioned outside the bank, and is placed on the middle gate body 132. Thus, the waterway gate apparatus 100 can be easily installed without requiring a large-scale construction machine such as a crane truck.

  As described above, in the waterway gate device 100 according to one embodiment of the present invention, it is possible to significantly reduce the inundation from the outside of the bank during icing. That is, in the case of the conventional flap gate 50, when the flap gate 50 is lifted and left open at the time of icing, the opening (gap) on the side of the gate hole 52 is large. A large amount of water was flowing inside the bank (Fig. 6). On the other hand, in the waterway gate apparatus 100 according to the embodiment of the present invention, only the lower flap 140 is lifted and kept open when icing, and the upper flap 120 and the middle flap 130 are also in an emergency water increase. However, since the water is surely dammed up, only a small amount of water flows into the inside of the bank through the small opening portion of the lower water flow hole 116, and the inundation from the outside of the bank can be minimized (FIG. 5). As described above, in the waterway gate device 100 according to the embodiment of the present invention, since the opening at the time of icing is small, the risk of inundation from the outside of the bank at the time of emergency water increase can be reduced. The same applies to the installation method of the waterway gate device according to the present embodiment.

  Further, the waterway gate apparatus 100 according to an embodiment of the present invention dams the river water flowing from the outside of the bank into the bank by locking the upper flap 120, the middle flap 130, and the lower flap 140 at the time of emergency water increase. Since it has the function of a flap gate that automatically opens and closes with water pressure according to the water level and flow rate of the river, it can be used as an alternative to the conventional flap gate 50 (FIGS. 6 and 7). The same applies to the installation method of the waterway gate device according to the present embodiment.

  Further, in the conventional flap gate 50, it is necessary to remove the ice and snow accumulated at the bottom of the water channel and forcibly close the flap gate 50 in preparation for emergency water increase or at the time of emergency water increase at the time of icing. In the waterway gate device 100 according to the embodiment, as described above, since the inundation from the outside of the bank can be remarkably reduced at the time of icing, the maintenance work of the gate in the winter period can be reduced. The same applies to the installation method of the waterway gate device according to the present embodiment.

  Moreover, the waterway gate apparatus 100 according to one embodiment of the present invention can be installed in a doorway inside an existing bank, and can be installed in a doorway of any shape and size provided on the side wall of the waterway. Therefore, the construction period can be shortened and the installation cost can be reduced. The same applies to the installation method of the waterway gate device according to the present embodiment.

  In the waterway gate device 100 according to an embodiment of the present invention in which the upper gate body 122, the middle gate body 132, and the lower gate body 142 are connected in the vertical direction, the gate body is divided into three stages. The body can be separated and carried to the installation site. Further, in the conventional single-plate flap gate 50, it was necessary to install it using a large-scale machine such as a crane truck. However, in the gate device for waterways 100 according to one embodiment of the present invention, each gate body is provided. Can be installed by being fitted in the door groove 10 in order, so that it can be installed simply and the installation period can be shortened. Moreover, in order to install the conventional flap gate 50, not only the gate main body but also maintenance of peripheral equipment such as a hoisting device is required at the same time, but the waterway gate device 100 according to one embodiment of the present invention is required. Then, since such peripheral equipment is unnecessary, it can be installed easily and in a short time. The same applies to the installation method of the waterway gate device according to the present embodiment.

In addition, this invention is not limited to the said embodiment, A various deformation | transformation and application are possible. For example, in the present embodiment, as shown in FIG. 1, the upper gate body 122, the middle gate body 132, and the lower gate body 142 are described as being connected in three stages in the vertical direction, but the number of gate bodies is a water channel. Depending on the height, it may be 2 or 4 or more, and there is no particular limitation as long as a plurality of gate bodies are provided in the vertical direction.

  Moreover, in this embodiment, as shown in FIG. 2-4, although the upper stage flap 120, the middle stage flap 130, and the lower stage flap 140 were demonstrated so that opening and closing was provided in the outer side of the bank of the waterway gate apparatus 100, it was normal. The flaps may be provided on the inside of the bank as long as water can sometimes flow from the bank side to the bank side and river water from the bank side can be dammed up during an emergency water increase.

  Moreover, in this embodiment, as shown in FIG. 3, although the form which installed the gate apparatus 100 for waterways in the set of opposing door grooves 10 was demonstrated, the water groove is divided into two and the door groove 10 which opposes is divided. In the case where two sets are provided, the waterway gate devices 100 may be installed in two horizontal rows (side by side).

  In the present embodiment, as shown in FIGS. 1 and 2, the form in which each flap is attached to each gate body via a hinge 150 has been described. However, there is no particular limitation as long as the flap can be opened and closed by water pressure. For example, in the case of the upper gate body 122, the upper flap 120 may be provided to be openable and closable by attaching a rotating shaft to the upper portion of the upper flowing water hole 112 and welding the upper end of the upper flap 120 to the rotating shaft.

  Moreover, in this embodiment, although the form which uses the member in which the rust prevention process was given as each member (except water stop rubber) of the waterway gate apparatus 100 was demonstrated, about a flap, for example, it is wooden, It may be made of aluminum, or may be a transparent plate such as acrylic from the viewpoint of lighting.

  Moreover, in this embodiment, as shown in FIG. 1, although the form which formed the chamfer 140a in the lower both ends of the lower flap 140 was demonstrated, the shape of the lower part of the lower flap 140 is the shape of the bottom face of a water channel. It can be changed as appropriate.

  Moreover, in this embodiment, although the form of the installation method which fits each gate body in the door groove 10 and mounts in order on a gate body was demonstrated, after fitting in the door groove 10, for example, By fixing and fixing the lower part of the upper gate body 122 and the upper part of the middle gate body 132 with a connecting member, and fixing the lower part of the middle gate body 132 and the upper part of the lower gate body 142 with a connecting member, The gate bodies may be connected and fixed.

  In the present embodiment, the form using the integrally molded frame has been described. However, the frame may be composed of, for example, a horizontal member and a vertical member.

DESCRIPTION OF SYMBOLS 10 Door groove 20 Side wall 50 Flap gate 52 Gate hole 60 Main body gate 100 Waterway gate device 112 Upper stage water hole 114 Middle stage water hole 116 Lower stage water hole 120 Upper stage flap 122 Upper stage gate body 125 Upper stage frame body 127 Water stop rubber 128 Water stop rubber 130 Middle flap 132 Middle gate body 135 Middle frame 137 Water stop rubber 140 Lower flap 142 Lower gate body 145 Lower frame body 147 Water stop rubber 140a Chamfer 150 Hinge

Claims (4)

A waterway gate device installed in a doorway provided in a waterway,
A gate body comprising: a frame body provided with a water flow hole; and a flap attached to the frame body and closing the water flow hole,
The flap opens in the direction of the outer bank, closes in the direction of the inner bank,
A plurality of the gate bodies are provided in the vertical direction,
Dam the waterway by locking the flap,
A waterway gate device. The flap is provided so as to be openable and closable outside the dam of the frame body,
The waterway gate device according to claim 1. A gate body comprising: a frame body provided with a water flow hole in a door groove provided in the water channel; and a flap that opens in a direction toward the outside of the bank and closes in the direction toward the inside of the bank, and that is attached to the frame body and closes the water hole. Fitting process,
Providing a plurality of the gate bodies in the vertical direction;
Installation method for waterway gate devices including The flap is provided so as to be openable and closable outside the dam of the frame body,
The installation method of the gate apparatus for waterways of Claim 3 characterized by the above-mentioned.

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