JPH0757945B2 - Method of manufacturing weight device for underwater installation - Google Patents

Description

The present invention relates to a weight device for underwater installations and a method for manufacturing the same, and is used to prevent the diffusion of pollutants in the sea, lakes, rivers, sedimentation ponds of pollution control devices, and the like. The present invention relates to a weight device used for an underwater fence such as a float fence or a submarine fence, an installation for displaying a compartment such as a farm, a route, etc., and a manufacturing method thereof.

In the sea, lakes, rivers, etc., dredging work may be carried out, and in such a case, the water will be polluted by the excavated mud. In addition, when repairing rivers or making trenches (culture ditches) that are fish reefs for planting juveniles and kelp seeds in shallow water fishing grounds, for example, excavate them with an amphibious bluetooth and carry out the excavated soil. Is being done.
Even when performing such work, there arises a problem of polluting the surrounding water area. When such polluted water diffuses into the surroundings, it is not preferable for the biological ecosystem, so that these polluted waters are often enclosed and enclosed as shown in FIG. The one shown in FIG. 6 shows an example of the float fence 1 used for preventing the dirt from the dredging work, and the float fence is connected with a large number of fence materials 2 as shown in FIG. It is used in the state of being suspended in water. A submarine fence is used for soiling due to river repairs, etc. The submarine fence is constructed by connecting a large number of fence materials 2'shown in Fig. 8 and moored at the bottom of water.

By the way, the fence material 2 which constitutes the above-mentioned float fence 1 has an elongated cylindrical floating body 3, and has connecting tools 3a and 3b connected to each other on both sides of the floating body 3,
A vertically long net 4 is vertically provided over the entire length of the floating body 3, and an iron chain 5 is attached to the lower end of the net as a weight so that the net can be properly stretched vertically and horizontally. As shown in FIG. 6, auxiliary floating bodies 6a and 6b are provided on both sides of the float fence 1, and these auxiliary floating bodies are connected to the floating body 3 and weights 6c and 6d placed on the seabed through wires or the like, respectively. As a result, the float fence is held in a substantially fixed position while having a cushioning function so that the influence of the waves does not directly affect the floating body 3. Further, the fence material 2'shown in FIG. 8 is connected to the cylindrical floating body 3'as well as the connecting tool 3 ', like the float fence 1 described above.
a, 3'b, a net 4'is hung vertically, an iron rod or an iron pipe 5'is attached to the lower end of this net as a weight, and the fence is moored by its gravity.

However, in the above-mentioned float fence, the chain of weights attached to the lower end of the net moves horizontally and vertically due to waves and is deformed into a curved shape.
As a result, the net will also deform and become unable to be properly stretched. When this happens, fence material 2
There is a gap between the two, and sewage can invade from here to diminish the function of the fence. Further, in the above submersible fence as well, if the bottom of the water has irregularities as shown in FIG. 8, since the iron bar of the weight or the pipe 5'is rigid, there is a gap below when placed on the bottom of the water. And sewage may enter from here. Also, when such a submersible fence is used in water with a sloping bottom, the iron bar or pipe of the weight may slide due to its gravity, or the installation position may change due to movement of water such as waves. However, this is inconvenient when it is desired to reliably separate the non-polluted water area and the polluted water area.

In addition, the weight as described above is heavy because it is made of iron material, and not only is it difficult to install it, but it also causes rust due to long-term use, bringing foreign matter into the water and deteriorating the water quality. There is also a problem that the weight becomes lighter and the weight does not function as a weight.

Although the above describes a fence that prevents the spread of pollution, although not shown in the figure, it is also used as a navigation route display to divide the water area or indicate a restricted area for boats when fish and shellfish are cultured. Also, an underwater installation is used in which a rope, a belt, or a sheet is hung on a float, and these are connected to a mooring weight installed in water so that they can be held at a fixed position. However, even in these cases, when concrete blocks are used for the weight, not only when the installation location is on a sloping ground but also on flat ground, the concrete blocks themselves are installed independently of each other. Therefore, it may move due to the force of water due to waves, etc., the position of each float may change accordingly, and it may not be possible to display it as a line, even if you try to connect the floats to each other and display the line You may not be able to hold it in place.

Problems to be Solved by the Invention As described above, in all conventional weight devices for underwater installations, the nets that prevent the flow of pollutant particles cannot be stretched in a tight state without loosening, or the fence is held in a fixed position. There was a problem that it could not be done, and furthermore, the division of the water area could not be displayed linearly at a fixed position, and its improvement was desired.

Means for Solving the Problems In order to solve the above problems, the present invention provides the above-mentioned underwater installation object that is moored at the bottom of a water body and is erected by a float and extended laterally of the water area. A weight device for mooring, wherein the weight device is a long linear sandbag in which a long slender bag is filled with sand. Is.

A method for manufacturing a weight device for mooring a submerged installation that is moored to the bottom of a water body and is erected by a float and extending laterally of the water body, wherein Sand and water and air are blown together or separately into a water-permeable long slender bag, air and water are discharged from the water-permeable part, and sand is sequentially filled into the slender bag to form a long-line sand. A method of manufacturing a weight device for an underwater installation, which is characterized by forming a bag.

Action Since a linear sandbag is used for the weight of an underwater fence, it has both rigidity and flexibility to some extent,
Furthermore, a floating display on the water can be displayed linearly.

Further, when sand, water and air are blown into the elongated bag, the elongated bag is inflated by the air, the sand and water are pressurized, and the sand and water are agitated by the air and mixed well.

Embodiment Next, the first embodiment of the present invention will be described with reference to FIGS.
A detailed description will be given with reference to FIGS.

In the figure, the same reference numerals as those in the other figures show the same components, and FIG. 1 shows a fence material 12 used for a float fence as an underwater fence, and the weight of the fence material 2 shown in FIG. The sandbag 15 is used instead of the chain. This sandbag is an elongated bag 15a of sand 1
It is a linear bag filled with 5b, but it is an elongated bag
As shown in FIG. 2, reference numeral 15a includes an outer bag 15a-1 made of a durable rubber or textile and an inner bag 15a-2 made of rubber or plastic having good sliding property, and the inner bag is filled with sand and water. Sometimes this is done smoothly. It should be noted that one end of these bags forms a water-permeable portion that does not allow sand to pass through.

To concretely form this sandbag, prepare the above-mentioned elongated bag 15a having a length sufficient to partition a predetermined water area in advance, and add the main body of the fence material 12 (excluding the sandbag 15) to this. Attach it and set it in the prescribed water, and then blow sand and water from the opening of this elongated bag 15a at the same time with a pump to discharge the water from the tip, leaving only the sand in the bag and the bag filled with sand becomes a stick shape To do so. By doing so, as shown in FIG. 1, the sandbag 15 has a certain degree of rigidity, and the net 4 can be tensioned without slack, as if paper of a hanging shaft is stretched.

In the above, the sand and water are blown out by the pump, but the sand, water and air may be blown out, and in this case, these may be blown together, or the air may be blown separately. By doing so, the elongated bag 15a expands, facilitates the injection of sand and water, can send out the sand accumulated on the pump side to the tip side, and also has the function of mixing the sand and water well.

FIG. 3 shows a material 12 'for a submarine fence. In the material 2'for a submarine fence, a net sheet 14' is used instead of the net 4 ', and instead of an iron bar or a pipe 5'as a weight. The same sandbag 15 'as the sandbag 15 is used. The net sheet 14 'has a net 14'a at the top and a sheet 14'b at the bottom. This submarine fence material 12 'is also used by being connected to each other like the above-mentioned float fence material 12,
When installing it, attach the material for the submarine fence to the elongated bag 15'a of a length that surrounds the partitioned water area, as with the float fence.
It is also possible to attach the respective bodies 12 'and install them in a predetermined water area, and then blow sand and water or sand, water and air in the same manner as above to fill the elongated bag 15'a with sand. In this way, the sandbag 15 'has a certain degree of rigidity and flexibility and is well adapted to the uneven shape of the water bottom so that no gap is created between the sandbag 15' and the water bottom. In addition, even if the bottom of the water is inclined, it fits well into the sandy bottom and does not slip off. Also,
Since the lower end of the submarine fence made of the submarine fence material 12 'is made of a sheet, mud on the water bottom is prevented from moving into the submarine fence. At this time, the flow of mud is smaller than the flow of water, so the flow resistance is small and the force to move the submarine fence can be reduced. on the other hand,
In the upper net 14'a, the flow is large but it is a mesh, so the flow resistance can be reduced. In this way, even when excavating with a bulltozer, for example, the influence of mud flow on the submarine fence can be reduced and the weight of the sandbag can hold the submarine fence in place.
Although not shown in the drawing, a sheet is formed only on a part of the width of the upper end of the net 14'a, which is attached to the float 3,
It may be possible to prevent the contaminants floating on the water surface from entering the fence. Further, as the float 3, an auxiliary float may be used as shown in FIG.

Although the submarine fence is used as a single layer in the above, the submarine fence material 22 shown in FIG. 4 may be installed in an inverted V shape as shown in FIG. That is, material for submarine fences
22 is a net sheet 24 similar to the above net sheet 14 ′,
The upper end of 24 is connected to the floats 3, 3, ... With a string, and the sandbags 25, 25 similar to the above sandbag 15 'are attached to the lower ends of the respective net sheets. The installation method of this submarine fence is the same as the case of the submarine fence composed of the above submarine fence material 12 '. By doing so, as shown in FIG. 5, contaminants are first removed by the first net sheet and flowed into the inverted V-shaped portion,
Here, the water that has passed or passed through the net sheet stagnates because it is weakened, and the contaminants that have not been removed by the net sheet settle here, and the water becomes even cleaner. And when it flows further, the net sheet on the other side thoroughly removes the contaminants. Even when installing in an inverted V-shape like this, if the weight of the sandbag is used, the space between these sandbags can be arbitrarily determined, so that the space is not required for the installation and the risk of navigation of the ship is reduced. To do.

The above has described an underwater fence that prevents the diffusion of pollutants.However, even when the floats are lined up for enclosure of a farm, display of shipping routes, etc., the above sandbags are used to moor these floats, and each float is mutually connected. When they are connected to each other, these enclosures and route indications are indicated by lines, and since the sandbag is formed in a line shape, the movement thereof is restricted and these indications can be performed at fixed positions.

EFFECTS OF THE INVENTION As described above, according to the present invention, a long weight device for mooring an underwater installation that is moored at the bottom of the water, is erected by a float, and extends laterally of the water area. Since a sand bag formed by filling sand into a long and narrow bag was used in a linear shape, for example, not only can the turbid substance remover such as a net or sheet of an underwater fence be tensioned without looseness, but In the case of a bottom fence, even if there is unevenness on the water bottom, it fits well and is easy to fit, so there is no gap or deviation. In addition, unlike the conventional weight of iron material, it does not rust and leave foreign matter in the water to pollute the environment. Since the bag can be simply filled with sand, its construction is easy and cost can be reduced. Further, when displaying the water area on the water, this can be displayed by a line and the position can be prevented from being displaced, so that the utility value thereof can be further increased.

Also, when sand, water and air are blown into the slender bag, the air expands the slender bag, pressurizes the sand and water and pushes it toward the water permeable part, and because the sand and water can be mixed well, sand bag manufacturing work Can be carried out smoothly.

[Brief description of drawings]

FIG. 1 is a front view of a material for an underwater fence using an apparatus according to an embodiment of the present invention, FIG. 2 is a partial perspective view in which a part of this apparatus is cut away, and FIG. 3 is a submarine fence using this apparatus. FIG. 4 is a perspective view of another fence material using this device, FIG. 5 is a cross-sectional view of the fence material in use, FIG. 6 is a diagram showing an installation example of a float fence, FIG. FIG. 7 is a front view showing the conventional material for a floating fence, and FIG. 8 is an explanatory view of a state of use of the conventional material for a submerged fence. In the figure, 1 is a float fence, 2, 2 ', 12, 12', 22
Is a fence material, 3 is a float, 15, 15 'and 25 are sandbags.

Claims (1)

[Claims] 1. A method for manufacturing a weight device for mooring a bottom of a water body, erected by a float, and mooring an underwater installation extending in a lateral direction of the water body, wherein a water permeable portion is provided at a tip of the weight device. Blow sand and water and air together or separately into a non-water-permeable long slender bag having, and discharge air and water from the water-permeable part and fill sand into the slender bag sequentially A method for manufacturing a weight device for an underwater installation, comprising forming a linear sandbag.