JPH022308A - Artificial rocky beach and construction thereof - Google Patents

Abstract

PURPOSE:To construct an artificial rocky beach stable to surges of great energy by loading sunken plural blocks with sacks filled with a curable heavyweight material. CONSTITUTION:Blocks 1 such as cubic concrete blocks or tetrapods with holes penetrated so as to freely pass water are put at the sea bottom. Thence, sacks 2 made of, e.g., synthetic resin sheet are filled with a heavyweight material 3 such as concrete, spontaneously curable after injection followed by putting the resultant sacks on said blocks 1 to effect curing of said material, thus obtaining the objective artificial rocky beach.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an artificial rocky shore constructed on a sandy coast or the like.

[Conventional technology]

Traditionally, artificial rocks have been constructed to create an environment conducive for living things on sandy beaches. These artificial rocks are usually constructed by stacking concrete blocks and rocks such as tetrapods on the seabed for breaking waves, or by randomly sinking them, and over time, shellfish and algae gradually attach to them.
It acts as a fish reef, for example, attracting fish and reproducing.

[Problem to be solved by the invention]

However, such conventional artificial rocks are subject to severe sea conditions, and are directly affected by waves, especially in shallow waters.
It may collapse or move offshore.

There was a problem in that the artificial rocky shores could be pushed back towards the land and scattered, and in particular if affected by a typhoon, the artificial rocky shores would disappear completely.

This invention was made in view of these conventional problems, and an object of the present invention is to provide an artificial rock that can be stably maintained at a set position even when subjected to waves of relatively large energy, and a method for constructing the same. shall be.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a plurality of block bodies installed on the seabed, and on top of these block bodies, a plurality of flexible bags containing heavy materials that harden after injection are placed in a mesh-like structure. It was placed so as to create a Another invention of the present invention is to deposit a plurality of block bodies on the seabed, juxtapose a plurality of flexible bags containing heavy materials that harden after injection on top of these block bodies, Furthermore, a plurality of other bags similar to the above-mentioned bags are placed on top of these bags so as to intersect with them in a mesh pattern.

[Effect]

The flexible bag according to the present invention is placed in the form of a mesh on a previously installed block body after a heavy object is injected into the bag. For this reason, each of the heavy, elongated bags covers the entire block body from above, and holds the large number of block bodies so that they do not separate from each other, fall, or topple over. In addition, when the bag body arranged in a mesh pattern is hit by waves, it does not significantly impede the progress of the waves, so it does not receive much energy from the waves and remains in its installed position as a block. It acts to keep the body stable.

In addition, in another aspect of the present invention, the injection of the heavy object is performed before the single weight object hardens, which facilitates the work of installing the bag on the seabed and improves its conformity to the outer surface of the block body. Ensure its integration with the block body.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a large number of blocks installed on a part of the seabed, and these blocks are randomly placed on a sandy coast. These block bodies 1 are made of, for example, cubic concrete blocks having large water holes penetrated on each side, concrete structures such as tetrapods, rocks, and the like. In addition, in the case of a concrete structure, water holes are provided. Reference numeral 2 denotes a plurality of elongated bags filled with heavy objects, and these bags 2 themselves are made of synthetic resin sheets with high flexibility and strength. In addition, the above-mentioned heavy materials are materials that harden naturally after being poured into the bag body 2 as shown in FIG. 2, such as concrete, concrete mixed with other materials, or mixed with coal ash. used. In this way, heavy objects 3
The plurality of bags 2 injected with the above-mentioned bag bodies 2 are placed on the plurality of block bodies 1 so as to intersect with each other in a mesh pattern, and the weight of the heavy object 3 covers each block body 1 from above.

An artificial rock with such a configuration is a block body such as a rock or a concrete block on a sandy coast in the target sea area.
After installing the long bag body 2, the long bag body 2 is laid on the base.
The bag bodies 2 are installed at intervals of 1 to 5 m in the direction of 0.degree., and the heavy object 3 is poured into the bag body 2 at each installation time. Therefore, the bag body 2 sinks due to the injection of the heavy object 3, deforms according to the shape of the block body 1, and comes into close contact with them.
Finally, it settles stably on the seabed above the block body 1 and around the block body 1.

Further, following the above operations, other similar bags 2 are laid on top of each of the bags 2 in a direction orthogonal thereto. This laying is also carried out at intervals of 1 to 5 m, and the heavy objects 3 are poured in parallel to this r;s. For this reason, the bag 2 into which the heavy object 3 was injected is replaced by the bag 2 laid down earlier. It deforms according to the shape of the block body 1 and the seabed, comes into close contact with it, and stably settles thereon. In this case, it is preferable that the upper and lower bags 2 be fixed with stakes or anchors penetrating into the seabed at the portions where they intersect and at the portions that directly contact the seabed.

Each bag body 2 into which the heavy object 3 is injected in this way presses down the block body 1 from above, and as the heavy object 3 gradually hardens, the suppressed state is maintained constant. For this reason, the bags 2 that intersect with each other in a mesh pattern as described above not only increase stability against waves and tides, but also create a large number of voids, unlike those simply made of concrete blocks, etc. Enough space can be secured for living things.

The bag 2 may be made of vinyl resin having small holes that prevent the heavy material 2 from leaking out during injection, or a nonwoven fabric that does not deteriorate in water.

In addition, the bag 2 may be one in which the heavy object 3 is injected after it is placed in the water on the block body 1, or it may be injected with the heavy object 3 on the sea surface immediately before being placed in the water. You can also do it.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of block bodies are installed on the seabed, and on top of these block bodies, a plurality of flexible bags containing heavy objects that harden during injection are placed through a mesh. Since the bag was placed in such a manner that it would cover the block body tightly with a net from above, even if it were to be exposed to relatively large waves, the block body would not fall over or fall over. It can reliably prevent the reefs from moving, and therefore function as stable breeding reefs and fish reefs.

In addition, since the artificial rock arranged in a mesh pattern has good water permeability, it is possible to suppress the wave resistance itself as much as possible, and to ensure a sufficient holding force for the block body.

According to another invention of the present invention, a plurality of block bodies are deposited on the seabed, and on top of these block bodies, a plurality of flexible bags containing heavy objects that harden after injection are juxtaposed. Furthermore, a plurality of other bags similar to the above-mentioned bags were placed on top of these bags so as to intersect with these bags in a mesh pattern, so that the The heavy material can be injected at sea or on the ground near the construction area before it hardens, which simplifies the work up to the construction of the artificial rock. Following the shape of your body.

Since each bag body can be brought into close contact with these bodies, effects such as being able to sufficiently increase the holding strength for the block body after curing can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the artificial rock according to the present invention, and FIG. 2 is a sectional view of the bag shown in FIG. 1. 1. Block body, 2. Bag body, 3. Heavy object. Figure 1 2-m-Front body

Claims (1)

[Claims] 1) A plurality of block bodies are installed on the seabed, and on top of these block bodies, a plurality of flexible bags containing heavy materials that harden after injection are placed to form a mesh. An artificial rock placed on. 2) Multiple blocks are sunk on the seabed, multiple flexible bags are installed on the water surface near these blocks, such as on a work boat, and the weight that hardens after being injected into these bags. A method for constructing an artificial rock, in which bags containing heavy objects are placed on top of the block bodies in a mesh-like manner, 3) sinking a plurality of block bodies on the seabed, A plurality of flexible bags are installed on top of these block bodies, heavy objects that harden after injection are stored in these bags, and each bag containing these heavy objects is placed on top of the block body. A method of constructing an artificial rock by placing it in a mesh pattern on top of the sea.