JP2001098532A - Flood gate skeleton, towing method therefor and instalation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mean for preventing reduction of buoyancy caused by a pile foundation insert pipe and a method of sinking a gate skeleton and adjusting the level thereof, and provide a method of connecting the gate skeleton to a water shielding sheet pile. SOLUTION: In this water gate skeleton 10 including a bottom plate part 1 and dam post parts 2 erected on both sides of the part 1, holes 7a, 7b in which the head 91 of a pile 9 previously driven in a water gate installation position is inserted are provided in the bottom plate part 1 and the dam post parts 2, and the hole 7b in the dam post part 2 is provided to be extended to the position higher than the water level at the time of sinking. A temporary receiving pile is provided with receiving beams 93, 94, and the level adjustment is made by an elevating means 92 such as a jack or the like. A water shielding sheet pile 110 is disposed in the periphery of the water gate skeleton, concrete is placed on the head of the water shielding sheet pile to integrate the water shielding sheet pile and the water gate skeleton with each other and secure cut-off performance, and a cut-off plate 16 is provided between the concrete and the water gate skeleton concrete.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sluice gate installed at a harbor, estuary, etc., and a method of towing and installing the sluice gate.

[0002]

2. Description of the Related Art FIG. 16 shows a structure of a conventional general floodgate. In the figure, 101 is a bottom plate portion, 102 is a weir column standing on both sides of the bottom plate unit 101, and 103 is a weir column 102
There is a gate post standing above it, and on top of that, an operation room 1
04 is provided. The door body 105 is connected to the weir column 102 and the gate column 10 by a winch or a cylinder mechanism (not shown).
3, which is lifted up by the upper gate post 103 in normal times, and descends to the weir post 102 in the event of an emergency such as a typhoon to stop the flow of water. Etc. from entering the bay. In the figure, 100 is a mound where the sluice is installed, 106 is a connecting bridge, 107
Is a filling soil and 108 is a dam.

[0003] It is often inconvenient to construct such a sluice gate from the main body at the installation site, since the construction period is long and it is often inconvenient that fishing boats cannot enter or leave. As shown in the drawings, there is known a method of shortening a construction period by unitizing a main body portion and manufacturing it at a factory, constructing a floating body structure, and towing it to be installed on site.

[0004] Also, Publication 1 (Magazine: Basic Engineering, Vol. 21, No. 1, “Design and Construction of Steel Shell Caisson” by Kato et al., P. 67
-72, January 15, 1993, General Civil Engineering Research Institute Co., Ltd.) built a steel shell caisson in the dock of a shipyard, and at the same time, reinforced the reinforcing steel, and then laid it on the foundation pile that had been pre-cast. A construction method is described in which a concrete body is placed in a double wall of a steel shell, and concrete is poured into the double wall. For this reason, the bottom plate portion of the steel shell caisson is provided with a hole into which the pile head is inserted, and after inserting the pile head into this hole, concrete is poured into the hole to be connected to the pile head.

[0005]

However, in the construction method disclosed in Japanese Patent Application Laid-Open No. H10-110421, since the main body portion, that is, the water gate body is merely mounted on the mound, the installation of the water gate body with mound leveling accuracy is required. The accuracy, that is, the inclination, is determined, and the accuracy required for the sluice gate facility cannot be obtained. Further, there is a problem that it is difficult to reduce a hydraulic gradient of infiltration water caused by a difference in water level between the upstream and downstream (inside and outside) of the sluice body, and to connect with a seepage control sheet pile provided to prevent the flow and suction of sediment. Was.

[0006] In the construction method described in the publication 1,
Since a template having a plane accuracy of ± 50 mm after the subsidence is set in advance and a steel shell caisson is set and deposited thereon, the accuracy cannot be expected to be higher than the plane accuracy of the template. Since stricter precision control is required for sluice facilities, level control must be performed at support points. At that time, since the level management is performed on the plane, there is a problem that the number of support points is multiplied and the level adjustment at each support point is required.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a means for facilitating accuracy control during sunking and fixing of a water gate body under rational control of sinking water weight. Also,
It is another object of the present invention to provide a connecting method that can be easily connected to the impermeable sheet pile after the water gate body is fixed.

[0008]

In order to solve the above-mentioned problems, a water gate structure according to the present invention includes a bottom plate portion and a weir column erected on both sides thereof. A hole for inserting a head of a pile driven into the installation position is provided in the bottom slab and the weir column, and the hole in the weir column extends to a position higher than the water surface when the sluice body is sunk. It is characterized by the following.

In the present invention, when referring to the sluice body,
In a narrow sense, it refers to a concave lower unit composed of a bottom slab and dams standing on both sides of the bottom slab. In a broad sense, a gate post standing (connected) on the dams and an operation room thereabove Or a part including all or a part of a sluice device such as a door body and a lifting mechanism thereof. And the sluice skeleton of the present invention,
Since the holes for inserting the heads of the piles previously set in the water gate installation position are provided in the bottom slab and the weir column, the sinking gate body can be temporarily received using these holes and the pile heads. Therefore, it is possible to form a gap between the sluice body and the mound, and it is possible to secure the installation accuracy of the sluice body regardless of the leveling accuracy of the mound. Note that a filler is injected into the gaps later. further,
Since the hole of the weir column for inserting the pile head of the sluice skeleton extends to a position higher than the water surface, external water does not flow freely from this hole into the hollow inside the sluice column. The amount of water injected into the sky can be adjusted, and the load acting on the temporary receiving piles, which depends on the amount of water injected at the time of subsidence, should be the minimum value that does not allow the submerged floodgate to move even if the external water level fluctuates. And the structural members of the temporary support portion can be minimized.

Further, in the water gate body of the present invention, a water stop plate is provided on an outer periphery of the water gate body.

[0011] Since the water stop plate is integrally joined with the impermeable sheet pile that is placed around the periphery of the gate body by casting concrete, it prevents water from entering below the bottom plate portion after the water gate body is fixed. be able to.

[0012] The first means of the method of towing a water gate body according to the present invention includes a bottom slab and a weir column erected on both sides of the bottom slab, and inserts a head of a pile previously set in a water gate installation position. A method of towing a floodgate body having a hole, wherein a step of installing a floating body in the hole, a step of floating the floodgate body and towing to a floodgate installation position, and a step of removing the floating body at the floodgate installation position, It is characterized by having.

By using the hole for inserting the pile head and installing the floating body in the hole as described above, the buoyancy of the sluice gate body is increased, and the sluice can be towed to the sluice gate installation position. In addition, since the draft becomes small, it is possible to smoothly pass through shallow waters. The pile head is inserted into the hole provided in the sluice body by removing the floating body at the sluice gate installation position. At this time, the floodgate body is laid down while adjusting the amount of water injected into the hollow portion inside the floodgate body.

The second means of the method of towing a sluice body according to the present invention includes a bottom slab and a weir column erected on both sides thereof. A method of towing a sluice body having, wherein a step of installing a floating body filled with gas in the hole, a step of floating the sluice body and towing to a sluice installation position, and removing the gas in the floating body at the sluice installation position. And a step of dissipating.

In the second means, the floating body is not a solid like the first means, but a floating body filled with a gas (for example, air). According to this second means, there is an advantage that the draft of the sluice gate body can be adjusted freely in an auxiliary manner.

The third means of the method of towing a sluice body according to the present invention includes a bottom slab and a weir column erected on both sides of the bottom slab, and a hole for inserting a head of a pile previously set in a sluice installation position. A method of towing a sluice skeleton having, wherein a step of filling the inside of the hole with a gas, a step of floating the sluice skeleton and towing to a sluice installation position, and a step of dissipating gas in the sluice at the sluice installation position And the following.

This third means can stably secure buoyancy by filling the inside of the hole for inserting a pile head with a facility capable of replenishing the gas, and As with the second means, the means has the advantage that the draft of the sluice body can be adjusted freely and freely.

Further, the method of installing a water gate frame according to the present invention includes a bottom plate portion and a weir column standing upright on both sides thereof, and has a hole for inserting a head of a pile previously set in a water gate installation position. A method of installing a sluice skeleton for connecting the hole and the pile head, wherein a step of installing jack elevating means on the pile head or the sluice body, squatting the sluice body, and the jack elevating means A step of supporting the sluice skeleton, a step of raising the level of the sluice skeleton by the jack elevating means, a step of removing a jack by interposing a spacer member between the sluice skeleton and the pile head, and A step of providing a stopper at a lower portion of the hole so as to close a gap formed between the hole, the lower mound, and the bottom of the floodgate body; Step of joining parts Characterized by having a step of surrounding the periphery of the sluice skeleton in the water-impervious sheet piles, implanting base plate lower surface filler in the gap below the bottom plate portion.

With this configuration, the sluice gate of the present invention can be towed from the factory to the sluice gate installation position, and can be installed firmly in a short period of time. The spacer member interposed between the receiving members of the jack elevating means includes a liner plate for level adjustment in addition to a normal spacer.

In the method of installing a water gate body according to the present invention, the jack elevating means has upper and lower beam members and a jack interposed between both beam members, and is installed inside the hole. It is characterized by the following.

The jack elevating means is used to raise the level of the sluice skeleton because the height of the pile head is not constant. By installing the jack elevating means inside the hole for inserting the pile head, the jack elevating means is used. The gap with the lower mound can be reduced, and the cost of the bottom plate lower surface filler can be reduced. Also, the work is easy and safe.

Further, in the method for installing a water gate body of the present invention, a step of surrounding the periphery of the water gate body with a water impervious sheet pile, a step of attaching a water stoppage plate to an outer periphery of the water gate body, Integrating the water plate with the concrete around the bottom slab.

[0023] The water impervious sheet can block water entering through the lower surface of the sluice body, and the water blocking plate can block water entering through the outer peripheral surface of the sluice body.

Further, in the method of installing a water gate frame according to the present invention, the impermeable sheet pile is used as a filling mold on the lower surface of the bottom plate.

By using the impermeable sheet pile itself as a formwork, there is no need to provide a separate formwork, and the work of injecting the bottom plate lower surface filling material is simplified.

In the method of installing a sluice body according to the present invention, when it is necessary to increase the self-weight of the sluice body, the self-weight is increased by injecting water into the hollow portion of the sluice body or by adding earth and sand. be able to.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic front view of a water gate device showing an embodiment of the present invention, which is partially shown in section. FIG.
FIG. 3 is a cross-sectional perspective view showing one embodiment of the sluice body. In each of the drawings, 1 is a bottom plate portion, 2 is a weir column standing on both sides of the bottom plate unit 1, 3 is a gate column standing on the weir column 2, 4 is an operation room provided on the gate column 3, 5 is a door, and 6 is a connecting bridge.

The sluice gate body 10 includes at least a bottom slab 1 and a weir column 2 erected on both sides thereof, and constitutes a lower unit formed in a concave shape. The sluice gate body 10 may be configured to include a gate post 3 erected on the weir post 2 as shown by a broken line in FIG.
Alternatively, a configuration including a part or all of the water gate device such as the door body 5 and a lifting mechanism (not shown) of the door body 5 may be adopted. Further, the present invention can be applied to a so-called double-concave type water gate structure in which a weir column is also provided at the center, or a water gate structure of a water gate device having a horizontally openable door body and no gate column. How far the sluice body 10 should be
It is determined in consideration of the scale of the sluice device, problems in manufacturing and towing. The sluice body 10 is made in a factory.

The bottom slab 1 is provided with a hole 7a for inserting the head 91 of the pile 9 previously set at the position where the water gate is installed. Also, a similar hole 7b is provided in the weir column 2,
In this case, the hole 7b is provided so as to extend upward from the bottom surface of the bottom plate portion 2 and to have a height higher than the water surface when the water gate body 10 is laid down.

As shown in FIG. 3, the outer peripheral wall of the weir column 2 is a composite plate in which a reinforcing steel 21 disposed on the outside and a steel plate 23 with a dowel 22 disposed on the inner side are integrated with concrete 24. . The upper surface portion of the bottom plate portion 1 has the same composite plate structure 11,
It is 12. The holes 7a and 7b are constituted by sleeve tubes 13 and 25, respectively. In the figure, 1
Reference numeral 4 denotes a hollow portion in the bottom plate portion 1, and reference numeral 26 denotes a hollow portion in the dam column portion 2.

With such a composite plate structure mainly composed of the steel plates of the bottom plate portion 1 and the weir column portion 2, the water gate body 10 can be reduced in weight and strength. Although illustration is omitted,
The gate column 3 can also be a composite plate structure of steel plate and concrete. In addition, it is needless to say that the bottom slab portion 1, the weir column portion 2 and the gate column portion 3 are not limited to the above-mentioned structure, and may be made of reinforced concrete.

The pile 9 is mounted on a mound 10 at a position where the gate is installed.
The pile head 91 is previously driven so as to protrude from the mound 100 above the mound 100. The leveling of the mound 100 does not need to be strictly leveled as in the prior art, but may be performed to such an extent that it is almost horizontal.

After manufacturing the sluice gate body 10 at the factory,
The process from floating to the surface of the water to tow until installation as shown in FIG. 1 will be described.

(1) Method of Towing the Gate Structure First, the method of towing the gate structure 10 will be described with reference to FIGS.

A floating body 8 is installed on one or both of the holes 7 a and 7 b provided in the sluice body 10, on the ground or on the water surface, and the sluice body 10 is floated.
00, etc., tow to the water gate installation position (see FIG. 4). If the floating body 8 is not installed, the hole 7
This is to prevent seawater from entering a and 7b, thereby reducing buoyancy and preventing passage through a shallow water near the gate installation location. The draft position of the water gate body 10 can be adjusted auxiliary by adjusting the buoyancy of the floating body 8.

As a method of increasing the buoyancy of the water gate body 10, there is a method as shown in FIG.

In the method shown in FIG. 7A, for example, a cylindrical body such as styrene foam is used as a floating body 8, which is attached to the lid 81, inserted into the holes 7a and 7b, and is
1 is a method of attaching.

The method shown in FIG. 7B is a method in which, for example, an air bag is used for the floating body 8, and air is sent from the compressor 84 to the air bag through the valve 83. There is an advantage that the draft position of the sluice body 10 can be freely and freely adjusted in an auxiliary manner.

The method shown in FIG. 7 (c) is a method in which the upper portions of the holes 7a and 7b are closed with a sealing lid 85 having a valve 83, and the air is confined inside the holes to increase the buoyancy. By adjusting the amount of air from the compressor 84, the draft position can be freely and freely adjusted as in the method of FIG. 7B.

At the water gate installation position, the floating body 8 is removed, or when the floating body 8 is filled with gas, the gas in the floating body 8 is diffused, and the hollow portion in the water gate body 10 (for example, in the bottom plate portion 1). Hollow part 14 and hollow part 2 in the weir column 2
6), the body 10 is sunk to a predetermined depth,
The pile head 91 is inserted into a and 7b (see FIGS. 5 and 6). Also, at this time, since the hole 7b is provided so as to be higher than the water surface 300, the seawater does not flow into the hollow portion 26 in the weir post 2 from the open end 7c at the upper end, so that the seawater is injected into the sluice body 10. By adjusting the amount of water, the sinking position can be adjusted according to the draft position.

(2) Installation Method of the Gate Structure Next, a method of installing the gate structure 10 will be described with reference to FIGS.

When the sluice body 10 is laid down, the pedestal 93 of the jack elevating means 92 is mounted on the pile head 91 (see FIGS. 8 and 15).

As shown in FIG. 15, the jack elevating means 92 is installed in the holes 7a and 7b, and here, a pedestal 93 and an upper receiving beam 9 shown by a cross-shaped beam member.
4, a hydraulic jack 95 is interposed, for example. Further, a projection 96 with which the upper receiving beam 94 abuts is provided in advance in the sleeve tube constituting the holes 7a and 7b. The jack elevating means 92 may be installed on the sluice body 10 side, or may be installed on several pile heads 91. Further, the pedestal 93 and the upper receiving beam 94 may be bar-shaped beam members. The pedestal 93 is provided with means for fixing to the pile head 91. The hydraulic jack 95 is attached to the lower surface of the upper receiving beam 94 and is set on the receiving table 93. When the sluice body 10 is sunk as described above, the hydraulic jack 95 comes into contact with the pedestal 93, and the sluice body 10 is temporarily supported.

The level of the sluice body 10 is set by the jack elevating means 92 (see FIG. 9). Hydraulic jack 95
To raise the upper receiving beam 94 so that the end of the upper receiving beam 94 is brought into contact with the projection 96 projecting into the holes 7a and 7b.
Raise the sluice body 10 and raise its level.

After setting the level, the level is adjusted by the spacer member 97, and only the hydraulic jack 95 is removed (see FIG. 10). Since the height of the pile head is not constant, after setting the level, as shown in FIG.
The sluice body 10 is supported between the third and upper receiving beams 94, and the level of the sluice body 10 is adjusted by the liner plate 98. After that, only the hydraulic jack 95 is removed.

A stopper 99 is provided below the holes 7a and 7b.
And filling with a filler for connecting the pile head (see FIG. 11).

The stopper 99 is, as shown in FIG.
It is a wire mesh type, which is previously wound around the outer periphery of the pile head, or is thinly wound into a cylindrical shape.
4 is inserted through the gap between the holes 7a and 7b, or is expanded downward to close the gap between the mound 100 below the bottom slab 1 (or the leveling concrete cast thereon). In addition, the stopper 99 may be any one as long as it closes a gap formed between the holes 7a, 7b, the lower mound 100, and the bottom of the water gate body under the holes 7a, 7b. For example, an elastic member such as rubber is used. Is also good.

After installing the stopper 99 below the holes 7a and 7b, the pile head connecting material 15 such as concrete or mortar is cast into the holes 7a and 7b.

A water stop plate 16 is attached to the outer periphery of the water gate frame 10, and a water-impermeable sheet pile 110 is cast around the mound 100 around the frame 10 (see FIG. 12). 8 to 11, the water stop plate 16 and the impermeable sheet pile 110 are not provided, but the water stop plate 16 may be attached to the outer periphery of the gate body 10 in advance. Also, the impermeable sheet pile 110 may be cast on the mound 100 in advance.

An injection pipe 17 is installed (or previously installed) in the bottom slab 1, and mortar or the like is injected from above, and a bottom slab lower surface filling material 1 such as mortar is inserted into a bottom gap below the bottom slab 1.
8 (see FIG. 13). At this time, the impermeable sheet pile 110 serves as a formwork. In addition, bottom plate lower surface filler 1
8 can be confirmed.

A concrete formwork 120 is provided around the impermeable sheet pile 110, and concrete 130 is poured into the concrete formwork 120 (see FIG. 14). The waterproof plate 16 and the impermeable sheet pile 110 are integrally connected by concrete 130. Water entering along the outer peripheral surface of the water gate body 10 can be blocked by the water blocking plate 16, and water entering along the surface of the mound 110 can be blocked by the impermeable sheet pile 110.

In order to inject the bottom plate lower surface filling material 18, as described above, first, mortar is filled in the gaps on the lower surface of the bottom plate portion, and then concrete 130 is poured around the impermeable sheet pile 110. Is preferable since no void is formed on the bottom surface of the bottom plate. However, the order is not necessarily limited. It is also possible to inject mortar or the like at the same time from inside and outside. In addition, concrete 1
30 may be cast.

In the above, the pile head binding material, the bottom slab bottom filling material, and the concrete surrounding the bottom slab are cast in separate processes. However, the present invention is not limited to this. May be simultaneously cast from the injection pipe 17. At this time, the stopper 99 is naturally unnecessary. As described above, the water gate body 10 can be installed. However, when the weight of the body 10 is insufficient, water may be injected into a hollow portion inside the body, or earth and sand, mortar, or the like may be charged.

[0054]

As described above, the sluice gate body of the present invention can be used regardless of the leveling accuracy of the mound and the accuracy of the pile head level.
It is possible to ensure a predetermined installation accuracy.

Further, by providing a water stop plate on the outer periphery of the water gate body and disposing the water impervious sheet pile around the water gate body, the shape of the water gate body can be simplified and the connection between the water impervious sheet pile and the water gate body can be facilitated. Can be.

Further, since the hole of the weir column for inserting the pile head of the sluice body of the present invention extends to a position higher than the water surface,
External water does not flow freely from this hole into the hollow inside the weir column, and the amount of water injected into the sluice body can be adjusted. The acting load can be set to the minimum value at which the submerged sluice gate body does not move even if the external water level fluctuates, and the structural members of the temporary receiving support can be minimized.

In addition, according to the method of towing a floodgate body of the present invention, buoyancy can be increased by installing a floating body in a hole into which a pile head is inserted, thereby facilitating towing of the floodgate body.

In addition, according to the method of installing the sluice body of the present invention, the level of the sluice body can be individually adjusted at multiple points by the jack elevating means installed at the pile head, and the strict installation required for the sluice body is achieved. Accuracy can be ensured.

[Brief description of the drawings]

FIG. 1 is a schematic sectional front view of a sluice gate body showing an embodiment of the present invention.

FIG. 2 is a cross-sectional perspective view showing an example of a water gate body.

FIG. 3 is a sectional view showing a composite plate structure of a bottom plate portion and a weir column portion.

FIG. 4 is a process chart showing a method of towing a gate structure.

FIG. 5 is a process chart showing a towing method of the sluice gate body.

FIG. 6 is a process chart showing a towing method of the sluice gate body.

FIG. 7 is a view showing a method of mounting a floating body and increasing buoyancy.

FIG. 8 is a process chart showing a method of installing a water gate body.

FIG. 9 is a process chart showing a method of installing a water gate body.

FIG. 10 is a process chart showing a method of installing a water gate body.

FIG. 11 is a process chart showing a method of installing a sluice gate body.

FIG. 12 is a process chart showing a method of installing a water gate body.

FIG. 13 is a process chart showing a method of installing a water gate body.

FIG. 14 is a process chart showing a method of installing a water gate body.

FIG. 15 is a perspective view showing a configuration of a jack elevating means and a stopper.

FIG. 16 is a front view of a conventional floodgate device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom plate part 2 Weir pillar part 3 Gate pillar part 4 Operation room 5 Door body 7a, 7b hole 8 Floating body 9 Pile 10 Water gate body 15 Pile head binding material 16 Water stop plate 18 Bottom plate bottom filling material 91 Pile head 92 Jack lifting means 97 Spacer 100 Mound 110 Impermeable sheet pile

Claims (10)

[Claims] 1. A water gate structure including a bottom plate portion and a weir column standing upright on both sides thereof, wherein a hole for inserting a head portion of a pile previously set in a water gate installation position is provided in the bottom plate portion and the bottom plate portion. A water gate structure provided in the bank portion, wherein the hole in the water column portion extends to a position higher than the water surface when the water gate structure is laid down. 2. The water gate structure according to claim 1, wherein a water stop plate is provided on an outer periphery of the water gate structure. 3. A method for towing a floodgate body including a bottom plate portion and a weir column standing upright on both sides thereof and having a hole for inserting a head portion of a pile previously cast at a floodgate installation position, wherein A method for towing a floodgate body, comprising: a step of installing a floating body; a step of floating the floodgate body and towing it to a floodgate installation position; and a step of removing the floating body at a floodgate installation position. 4. A method for towing a floodgate body including a bottom plate portion and a weir column standing upright on both sides thereof and having a hole for inserting a head of a pile previously placed at a floodgate installation position, wherein A step of installing a floating body filled with gas, a step of floating the sluice body and towing it to a sluice installation position, and a step of dispersing gas in the floating body at the sluice installation position. How to tow the frame. 5. A method for towing a sluice body including a bottom slab portion and a weir column portion erected on both sides thereof and having a hole for inserting a head of a pile previously set in a sluice installation position, wherein A step of filling the inside with gas, a step of floating the sluice body and towing it to a sluice installation position, and a step of dissipating gas in the hole at the sluice installation position. Method. 6. A bottom plate and a weir column provided on both sides of the bottom plate, and a hole for inserting a head of a pile previously set in a water gate installation position, and connecting the hole to the pile head. A method for installing a sluice skeleton, comprising: a step of installing a jack elevating means on the pile head or the sluice skeleton; a step of sinking the sluice body and supporting the sluice skeleton by the jack elevating means; Estimating the level of the sluice skeleton by means; removing the jack by interposing a spacer member between the sluice skeleton and the pile head; and lowering the mound and the sluice at the bottom of the hole. A step of providing a stopper so as to close a gap formed between the sluice body and the pile head; and a step of filling the hole with a pile head binder to join the sluice body and the pile head. Surround with impermeable sheet pile Extent and installation method of floodgates precursor characterized by having a implanting bottom plate lower surface filler in the gap below the bottom plate portion. 7. The jack lifting and lowering means has upper and lower beam members and a jack interposed between the two beam members, and is installed inside the hole.
How to install the sluice skeleton as described. 8. The method according to claim 6, further comprising: attaching a water stop plate to an outer periphery of the water gate body; and integrating the water impervious sheet pile and the water stop plate with concrete around the bottom slab. How to install a water gate body. 9. The method according to claim 8, wherein the impermeable sheet pile is used as a filler formwork. 10. The method according to claim 6, further comprising a step of putting water or earth and sand into a hollow portion in the sluice body.