JPH02252809A - Steel-made temporary flood gate - Google Patents

Abstract

PURPOSE:To enable tide stopping safely, surely, and in a short time by blocking a space between plural strut members, erected on a horizontal part structure body in which plural vertical communication holes are longitudinally and laterally arranged, by means of partition plates, and blocking upper end openings of the vertical communication holes with cover bodies. CONSTITUTION:Plural strut members 8 and 8 having a left and right pair of vertical grooves are standingly provided on a longitudinal center axis of a horizontal bottom part structure body in which plural vertical communication holes are longitudinally and latitudinally arranged. And a partition plate 4 is inserted from the upper part between vertical groove materials to block between them, and also upper end opening of the vertical communication hole is airtightly blocked with a cover plate 21. And a steel-made temporary flood gate 2 is towed with the upper end opening of the vertical communication hole airtightly blocked with the plate 21 and installed in a mount 1, and then filling stones 12 are charged in vertical communication holes and on openings of them. Moreover the partition plate 4 is lowered in a vertical groove between the strut members 8 and 8 at the time of the last tide stopping, and blocking is made in a short time.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a steel temporary sluice gate.

[Conventional technology]

In the reclamation project, a tidal embankment several kilometers long is constructed as shown in the perspective view of Figure 7 in order to close off the bay mouth and create reclaimed land within the bay, as shown in the factor 6 map.

By the way, during the construction of the tidal embankment, as the tidal embankment is completed by masonry, a difference in water level occurs between the inside and outside of the tidal embankment, and in the lower part of the embankment, tidal currents occur over several looms from the higher water level to the lower water level. However, the stones that had been piled up on the rough breakwater were washed away.

Therefore, in order to carry out the tide-blocking work using stone masonry on the rough breakwater in a short period of time, a steel formwork 15 is installed in advance using a large marine crane, etc. Large-scale construction work is being carried out, including laying rails 16 for general use trolleys 18 and creating a transshipment base 20 from trucks to trolleys 18 on the land side.

[Problem to be solved by the invention]

However, such measures increase construction costs and lengthen the construction period.

The present invention was proposed in view of these circumstances.
The purpose of the present invention is to provide an economical steel temporary sluice gate that can safely and reliably stop the tide in a short time without constructing large-scale transshipment bases, trolleys, rails, etc., or using marine cranes.

[Means to solve the problem]

To this end, the present invention has been developed to provide a temporary sluice gate that is installed at the tidal stop of a tidal embankment during reclamation and is buried in the tidal embankment upon completion of the tidal embankment, and is constructed of a box body in the form of a flat horizontal rectangular frame that can be used for pouring and draining water. A horizontal bottom structure in which a plurality of vertical holes are arranged vertically and horizontally, and a plurality of vertical holes are erected at equal intervals on the vertical center line of the horizontal bottom structure, and each of the holes is recessed and opens facing each other on the opposite surface. A plurality of support members, a cover plate disposed on the upper surface of the horizontal bottom structure and removably and airtightly closing the upper end openings of the plurality of vertical holes, both ends of which are firmly inserted into opposing ends of the support support members; The present invention is characterized in that it includes a plurality of rectangular partition plates inserted from above between the two adjacent pillar members to close off the portion between the two pillar members.

[Effect]

According to such a configuration, the following effects are performed.

After each vertical hole in the horizontal bottom structure of a steel temporary water gate with an inverted T-shaped cross section, which was prefabricated at a shipbuilding factory, was closed with a cover plate, ballast water was poured into the holes and floated above the interface. and tow it to the site.

At the site, a marine crane or the like was used to remove the cover plate, fill it with ballast, and sink these horizontal bottom structures in a single line onto a mound on the seabed, and then fill the vertical holes with stones. and secure it on the mound.

Once the construction work of the horizontal bottom structure at the tide stop is completed, the part between the two adjacent support columns is closed off by inserting a partition plate, and the tide is stopped, and then the temporary water gate is closed. Complete the tidal embankment by filling in all parts.

Here, the lid plate can also be used as a partition plate.

〔Example〕

An embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is an overall perspective view, Fig. 2 is an overall plan view of the temporary sluice gate shown in Fig. III-III in FIG. 2, respectively.

FIG. 5 is a cross-sectional view taken along IV-IV, and a perspective view showing the procedure for constructing the temporary sluice gate in FIG. 1.

In the above figure, l is a mound constructed on the seabed ground 10 at the mouth of the bay, and 2 is a steel temporary water gate according to the present invention, which is made up of a plurality of unit water gates each having an inverted T-shaped cross section connected in tandem. Each unit water gate consists of vertical plates, horizontal plates, reinforcing materials, etc.
A horizontal rectangular flat frame body with a diagonal planar shape and an appropriate height;
It consists of a pair of right and left rigid support members 8.8 that are erected at equal intervals in the center of both long sides of this frame, and whose openings face each other, and the upper ends of the front and rear rectangular openings of the rectangular frame. Each of the openings can be hermetically closed with a cover plate 21 via bolts 22, and a partition plate 4 can be dropped into the portion between the pair of left and right stiffeners.

5.5 is the tide on both banks of the bay mouth, 6 is the tidal levee built on the rough breakwater 9 on the mound 1, and 7 is the tidal levee formed by the opposite ends of the tidal levees 6.6 extending from both banks 5°5. At the stop, a 1llil false sluice according to the invention is used to construct this section.

12 is a medium stone packed into the rectangular frame of the unit sluice; 1
3.14 is the sea level at high tide outside the bay and inside the bay, 1! i It is the water surface of the pond.

In order to reclaim the inside of the bay using the present invention, first, the portion E touching both banks 5.5 shown in FIG.

As shown in FIG. 4, a rough breakwater 9 is constructed on the mound l on the seabed 511O, and a tidal breakwater 6 is further constructed on top of the rough breakwater 9, as shown in FIG. .

In this way, E, after the completion of the second part of the embankment construction, F.

In each section G, a mound 1 is built on the seabed ground 10, and a steel temporary water gate 2 is installed on top of this as shown in Fig. 3.

At that time, the steel temporary sluice gate can be airtightly closed off at the upper end opening of the vertical hole with the cover plate 21, and can be towed on the sea surface with appropriate ballast and transported to the site.

At the site, as shown in Fig. 5, a marine crane was used to install it on the mound l as shown in Fig. 3, and a dump boat was used to dump the medium stone 12 onto the vertical hole and its opening. It will be solidified and solidified.

For the final tide stop, the space between the support members 8.8 is closed in a short time by firmly dropping the partition plate 4 into the space.

〔Effect of the invention〕

According to such a steel temporary water gate, the following effects can be achieved.

(1) Since it is made of steel, a long, buoyant structure can be manufactured as a complete product at a shipyard, then towed to the site and installed as is, which can help reduce costs by minimizing inefficient on-site construction work. .

(2) Since the temporary sluice gate partition plates are made of steel, the opening area of the sluice gates is reduced by closing them one after another, and even if the tidal current speed increases, there is no outflow of stones unlike with conventional construction methods, so it can be closed for a short period of time. This eliminates the need for large-scale trolleys, rails, and transshipment bases from trunks to trolleys to stop the tide all at once.

Note that a lid plate can also be used as the partition plate.

(3) Since the steel temporary water gate is a finished product, the on-site construction period is short, and large-scale equipment and bases are not required, resulting in significant cost reductions.

In short, according to the present invention, in a temporary sluice gate that is installed at the tide stop of a tidal embankment during reclamation and is buried in the tidal embankment when the tidal embankment is completed, a box body in the form of a flat horizontal rectangular frame that can be used for pouring and draining water is used. A horizontal bottom structure in which a plurality of vertical holes are arranged vertically and horizontally, and a plurality of vertical holes arranged at equal intervals on the vertical center line of the horizontal bottom structure, each of which is recessed and opened facing each other on the opposite surface. a plurality of pillar members, a cover plate disposed on the upper surface of the horizontal bottom structure and airtightly closing the upper end openings of the plurality of vertical holes in a film-formable manner; A large-scale transshipment base, trolley, rail, etc. can be constructed by including a plurality of rectangular partition plates that are inserted between the two adjacent support members from above to close the area between the two support support members. The present invention is industrially extremely useful because it provides an economical steel temporary sluice gate that can safely and reliably stop the tide in a short time without using a marine crane or the like.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
The overall plan view of the temporary sluice gate shown in Figure 3 and Figure 4 are shown as III-III and IV-[V in Figure 2, respectively.
FIG. 5 is a perspective view showing the procedure for constructing the temporary water gate shown in FIG. 1. Figure 6 is a plan view showing the reclaimed land in the bay, Figure 7 is a perspective view showing the tidal embankment and drainage outlet in Figure 6, and Figure 8 is a sectional view showing how to partition the tidal embankment in Figure 7. be. l...Mound, 2...Steel temporary sluice gate, 3...Distance between supports, 4...Partition plate, 5...Both banks, 6...Tide embankment, 7...Drainage port , 8... Support member, 9... Rough breakwater, lO... Seabed ground, 12... Medium stone, 13...
・Sea level at high tide, 14... Reservoir water level, 21... Cover plate, 22... Bolt. Agent Patent Attorney Masa Tsukamoto Figure Figure 3 Figure 4/j

Claims (1)

[Scope of Claims] A temporary sluice gate installed at the tide stop of a tidal embankment in reclamation and buried in the tidal embankment upon completion of the tidal embankment, consisting of a box body in the shape of a flat horizontal rectangular frame capable of pouring and draining water. A horizontal bottom structure in which a plurality of vertical holes are arranged vertically and horizontally, and a plurality of vertical grooves that are erected at equal intervals on the vertical center line of the horizontal bottom structure and open facing each other on opposing surfaces are recessed. a plurality of support members, a cover plate disposed on the upper surface of the horizontal bottom structure and removably closing the upper end openings of the plurality of vertical holes in an airtight manner; A steel temporary sluice gate comprising a plurality of rectangular partition plates inserted from above between the two adjacent support members to close off the portion between the two support support members.