JPH0559710A - Mattress construction and mattress to be used for this construction - Google Patents

Abstract

PURPOSE:To protect the natural environment of rivers and so on and to construct a revetment, firmly with simple composition by containing an internal frame formed with a metallic network, in an external frame formed with log material, and by containing cobble-stones or the like in the internal frame. CONSTITUTION:With log material, an external frame 11 having a dimension according to a section to be required for the protection of a river bed, a river bank, or the like is formed, and the external frame 11 is set at the required section of the river bed or the like. After that, with a metallic network having a mesh of about 5-12cm, an internal frame 12 having an external contour almost same as the internal contour of the external frame and having an upper side to be opened is formed, and the internal frame 12 is contained in the external frame 11. Then, in the internal frame 12, cobble-stones 20 or the like are contained, and a mattress 10 is composed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for protecting river beds and river banks, and more particularly to a sedimentation construction method capable of protecting river banks and the like in a state close to nature by using natural materials, and a sedimentation used therefor. It is about.

[0002]

2. Description of the Related Art For example, as a method generally used at present for protecting river beds and river banks, that is, revetment work,
There is a method of fixing a riverbank by arranging a number of concrete blocks of a certain shape. Many concrete blocks for that purpose have been proposed in various forms.

If such a concrete block is used for revetment work, it can withstand floods and the like, and although it looks beautiful, it may impair the natural environment, and above all. It eliminates the "situations" of creatures and fish that improve water quality. Although it has been proposed to plant plants in blocks from the viewpoint of nature conservation, it is generally not sufficient for the protection of aquatic organisms.

Recently, it has become popular to improve the natural environment of rivers and the like, but attention has been paid to various organisms having the ability to improve the natural environment.
For example, plants and trees that have conventionally naturally grown on levees, etc. themselves play a role of revetment, and aquatic insects, etc. play a role in improving water quality. And fish were themselves a resource for humans.
If these rivers and shores are completely covered with concrete blocks, there will be no room for them to grow.

Therefore, as a method for protecting the natural environment sufficiently and also for protecting the river bank from floods, the woodworking method of construction as shown in FIG. 5 or FIG. -ing These conventional woodwork sunk methods are basically carried out by making a framework of wood and putting stones of about 30 cm in size into the framework.

[0006] However, the biggest drawback of this conventional woodwork sedimentation method is that many stones with a uniform grain size of about 30 cm must be obtained. It is important to use stones of such a size when there is a flood, etc.
This is to prevent the stones that were stored in the room from being washed away. However, a stone with such a uniform grain,
Not only is it difficult to find in recent years, but when a certain amount is prepared, it is almost impossible.

[0007] Therefore, the inventor of the present invention has made various studies on how to make the most of the advantages of the conventional so-called natural woodworking and sunk method while improving it so that it can be applied anywhere. As a result of the repeated accumulation, the present invention has been completed.

[0008]

SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned background, and the problem to be solved is to make full use of the advantages of the conventional woodwork sunk method to the natural environment. It is necessary to reliably protect the riverbed and riverbanks.

An object of the present invention is to provide a sedimentation method capable of surely protecting a natural environment such as a river and revetment and a sedimentation used therefor with a simple structure.

[0010]

In order to solve the above problems, first, the means adopted by the invention according to claim 1 is to refer to the reference numerals used in the embodiment and FIG. 1 and FIG. To explain, "a method for protecting river beds, river banks, etc., which is characterized by including the following steps (a) to (c). (A) Protection of river beds by logs. The step of forming an outer frame of a size corresponding to the necessary part and arranging it in an appropriate place such as a riverbed; (b) having an outer shape approximately the same as the inner shape of this outer frame, about 5 to 12 cm A step of accommodating an inner frame formed by a metal mesh having a mesh and having an upper opening in the outer frame;

Further, the means adopted by the invention according to claim 2 is likewise "a deposit used in a sedimentation method for protecting a river bed or the like, in which a log is used to protect the river bed or the like. It is composed of an outer frame formed in a corresponding size, and an inner frame formed in a box shape with an upper opening by a metal net having a mesh of about 5 to 12 cm so as to be housed in the outer frame. It is a sedimentation characterized by.

The operation of each of the inventions configured as described above will be described below. In this case, the operation of the sunk floor 10 according to claim 2 is substantially included in the operation of the sunk floor method according to claim 1. Therefore, the operation of the floor sunk method will be mainly described.

First, in the sinking method according to the first aspect, the outer frame 11 and the inner frame 12 having the lid 13 must be prepared, but the outer frame 11 is made of a log material. Therefore, it has sufficient strength and durability. That is, the outer frame 1 used in this sinking method
1 is also to be placed in water such as rivers and coasts, but when compared with the case of using iron materials, for example,
Since it does not generate rust, it has excellent durability. This is evidenced by the fact that many ancient remains are made of wood.

In particular, it is very important that the outer frame 11 is made of a log material in the sense that a natural product is used. The reason is that a specific resource as a log material is so-called thinned wood. After the war, a large amount of trees planted in various parts of Japan have come to be used as thinned wood in recent years, and it is currently difficult to process.However, it is possible to use such thinned wood. The frame 11 can effectively use natural objects. In other words, the outer frame 11 may be formed by using the thinned material that is not processed so much.

To form the outer frame 11 from a log material,
It may be done by using a bolt or a number line. As will be described in the examples described later, the settling bed 10 used in this settling method is arranged in the riverbed or the like in a state in which the boring stones 20 are placed in the inner frame 12, and therefore, a number of bolts and number lines are used. Even if the connection is released due to rust or the like, the logs forming the outer frames 11 will naturally maintain the state of being connected to each other. It is enough to use.

Further, what is important about the outer frame 11 is as in the conventional method shown in FIG. 5 or FIG.
This means that it is not necessary for the outer stone 11 to prevent the stone 20 to be stored therein from rolling out. The reason why the stone 20 is prevented from coming out is that it is the inner frame 12 to be described later. Therefore, as the outer frame 11, it is sufficient to use a log material to form the outer shape of the frame. Of. This point is very important in that the construction of the outer frame 11 itself simplifies the construction when it occupies a large part in the process of implementing the present floor slag construction method.

On the other hand, considering the inner frame 12,
When the inner frame 12 is housed in the outer frame 11, its outer side is held by the outer frame 11. Therefore, it is necessary that the inner frame 12 itself sufficiently withstands the housed stone 20. There is nothing. Therefore, this inner frame 12
May be formed and implemented only by a metal mesh having a mesh of about 5 to 12 cm.
Of course, the box-shaped inner frame 12 formed of a metal net may be constructed by using another metal wire or the like so that the shape can be maintained when a large number of these inner frames 12 are stacked. It is a thing.

In that sense, it is advantageous to prepare a plurality of rectangular metal nets with a frame as the inner frame 12 and assemble the metal nets with a frame at the construction site to form the inner frame 12. .. If such a rectangular metal net with a frame is prepared, not only the inner frame 12 having a shape corresponding to the outer frame 11 can be easily assembled, but also the metal net with a frame causes a dead space. You can stack without doing
This is because it is easy to store and transport.

The metal mesh for forming the inner frame 12 must have a mesh of about 5 to 12 cm. The reason is that if the mesh size is smaller than this range, it is difficult to form a "sumika" of fish or the like, and if the mesh size is larger than this range, most of the stored boring stones 20 are included. This is because most of them go out to the outside and cannot be an effective bed. As a material for such a metal net, various materials such as a so-called wire net, punching metal, metal lath or a material formed by weaving thick metal wires can be used.

Then, the inner frame 12 formed as described above is housed in the outer frame 11 and placed in a portion such as a river bed where protection is required. Since 20 is not yet stored, it is easy to carry out because it is lightweight. Of course, it is of course possible to assemble the outer frame 11 in a protected portion such as a riverbed and store the inner frame 12 in the completed outer frame 11.

As shown in FIG. 4, the outer frame 11 accommodating the inner frame 12 is arranged such that the size of the outer frame 11 gradually decreases from the shore to the center of the river according to the situation of the river. You may implement so that the frame 11 may be arranged. In such a case, as shown in FIG. 1, as the outer frame 11, the inner frame 12 should be housed individually rather than continuously forming a portion for housing the inner frame 12. It may be advantageous to form them individually.

The outer frame 1 containing the inner frames 12 as described above
After the arrangement of 1 is completed, the boring stone 20 is stored in each inner frame 12. As the ground stone 20, the ground stone on the riverbed at the construction site may be used as it is, and the ground stone 20 can be manufactured regardless of the size of the stone. The upper opening of each inner frame 12 has a sufficient size, and since each inner frame 12 is formed of a metal mesh having a light mesh of 5 to 12 cm, small stones, sand, etc. This is because it can be naturally discharged to the outside. Therefore, the storage of the gravel stones 20 in each inner frame 12 is most efficient when the settling bed 10 is submerged in water.

When the boring stone 20 is stored in each inner frame 12, the boring stone 20 to be stored in the lower side of the inner frame 12 may be relatively small. If so, it is advisable to store the relatively large ground stone 20. The inner frame 12 may cover the opening thereof with the lid 13 after storing the ground stone 20, but when the lid 13 comes off or disappears after a long period of time, a large stone This is because if the inside of the inner frame 12 is pressed by 20, the ground stone 20 will not be washed away due to a flood or the like. That is, it is better to store a relatively large stone on the upper side. However, if there is no such stone, the ground stones 20 in each inner frame 12 as described above.
After accommodating, the lid 13 provided integrally with the inner frame 12 covers the upper surface of the ground stone 20.
It is sufficient that the cover 13 covers the upper surface of the ground stone 20 until the ground stone 20 is stabilized and is not easily washed away, and it is not expected to cover it permanently. Stabilization of the ground stone 20 means that stones are entangled with each other like a stone wall or are held by roots of plants, and it takes a long time for such stabilization to be performed. It costs. However, until the stabilization, the upper surface of the ground stone 20 is covered by the lid body 13, so that there is no problem with the runoff of the ground stone 20.

In carrying out the above-mentioned sedimentation method, the outer frame 1
The assembly of 1 and the inner frame 12 and the like may be performed separately or simultaneously at the execution site. Further, although it is rare to do so, the ground stone 20 may be housed in the inner frame 12 after being assembled as the sunk floor 10 and the whole thereof may be arranged at the execution site. Such a thing is the construction site and ground stone 2
It may be advantageous if the 0 sampling locations are remote.

After the completion of the sedimentation method using the sedimentation bed 10 as described above, the sedimentation bed 10 containing the ground stones 20 sufficiently protects the shore of the river or the riverbed against the flow of water. Of course, the protection is maintained for a long time.

Further, in each of the floors 10, a large number of voids, which are "sumika" for fish and the like, are formed between the burial stones 20 housed in the inner frame 12, and the mesh of the inner frame 12 corresponds to the voids. Since fish and the like can sufficiently enter, compared to the case where conventional concrete blocks are stacked, much protection of nature can be achieved. Moreover, for example, a tree that has flowed can land on the ground floor 10 containing the ground stones 20 to sufficiently extend the roots, so that natural vegetation can be applied to the ground floor 10. It is possible, and even from this point,
It is very useful for nature conservation.

[0027]

EXAMPLES Examples of each invention will now be described with reference to the drawings. The following mainly describes the floor laying method according to claim 1 using the floor sunk 10 according to claim 2.

FIG. 1 and FIG. 2 show in sequence the state in which the floor laying method according to the present invention is being applied. In this floor laying method, an outer frame 11 made of logs and a metal net are used. A bed 10 with an inner frame 12 is used.

In the sinking method of the present invention, first, the outer frame 1
Although it is necessary to form 1 and arrange it in a portion such as a riverbed where protection is required, in the present embodiment, a log material is directly used in the portion where the outer frame 11 is to be arranged by using bolts, numbered wires or the like. It was assembled. Therefore, as shown in FIG. 1, in the outer frame 11 in this embodiment, a large number of spaces for accommodating the individual inner frames 12 are formed in a continuous state. In this respect, the sinker 10 shown in FIG. 3 has one outer frame 11 for accommodating one inner frame 12, but such a separate sinker 10 has a place to be constructed. This is advantageous in a place or a case where the outer frame 11 has a complicated shape or where it is difficult to form the continuous outer frame 11.

With respect to the outer frame 11 formed as described above, an inner frame 12 formed by assembling a square plate-shaped metal net with a frame is shown in the right part of FIG. 1 and the left part of FIG. Store as if you were there. That is, in the present embodiment, the box-shaped inner frame 12 is configured by assembling a plurality of framed metal nets, and one of the framed metal nets is the lid 13.

When the inner frames 12 have been stored in the storage portions of the outer frames 11 respectively, or while the inner frames 12 are sequentially stored, the hollow stones 20 having a size of about 5 to 30 cm are stored in the inner frames 12. To do. As the ground stone 20, it is sufficient to use gravel containing stones that are often found at the construction site as they are, and there is no need to use stones with uniform grain as in the conventional woodwork sunk method. In addition, as shown in FIG. 3, it is also possible to store the excavated stones 20 collected at a place apart from the construction site in an individual floor 10 and carry and arrange the whole, depending on the situation of the site. It can be adopted.

If necessary, in order to prevent the ground stones 20 housed in each inner frame 12 from being washed away by the water flow, the upper surface of the ground stones 20 may be covered with the lid 13.

[0033]

As described above in detail, in the invention according to claim 1, as exemplified in the above embodiment, "a method for protecting a riverbed, a riverbank, etc., the following (a)-
A sedimentation method including the steps of (c).
(A) A step of forming an outer frame of a size corresponding to the portion of the river bed or the like that needs to be protected by logs, and arranging this at an appropriate location such as the river bed; (b) The inner shape of this outer frame A step of accommodating an inner frame formed of a metal mesh having the same outer shape and having a mesh of about 5 to 12 cm and having an upper opening in the outer frame; The `` process '' has its structural characteristics, and as a result, it is possible to provide a sedimentation method that can reliably protect the natural environment such as rivers and revetments, and a sedimentation used for this with a simple configuration. is there. Further, in the invention according to claim 2, "an outer frame which is used in a sedimentation method for protecting a river bed or the like, and which is formed by a log into a size corresponding to a portion where the river bed or the like needs to be protected. And an inner frame formed in a box shape with an upper part opened by a metal mesh having a mesh of about 5 to 12 cm to be housed in this outer frame ". Therefore, when performing the floor laying method according to the first aspect, it is possible to provide the floor 10 that can be easily and reliably constructed with a simple configuration.

[Brief description of drawings]

FIG. 1 is a partial perspective view for explaining a floor siding method of the present invention, showing a state in which an outer frame is assembled and an inner frame is housed in the outer frame.

FIG. 2 is a partial perspective view for explaining the sinking method and showing a state in which an inner frame is housed in an outer frame and ground stone is housed in the inner frame.

FIG. 3 is a perspective view showing an example of a sediment according to the present invention, which is formed individually.

FIG. 4 is a schematic cross-sectional view of a river showing a construction example of the sedimentation method of the present invention in which sediments of different sizes are arranged.

FIG. 5 is a plan view showing a conventional woodworking floor.

FIG. 6 is a partial cross-sectional view showing another conventional woodwork floor.

[Explanation of symbols]

 10 Sinking floor 11 Outer frame 12 Inner frame 13 Lid 20 Grindstone

Claims (2)

[Claims] 1. A method for protecting a riverbed, a riverbank, etc., which comprises the following steps (a) to (c): (A) A step of forming an outer frame of a size corresponding to the portion of the river bed or the like that needs to be protected by logs, and arranging this at an appropriate location such as the river bed; (b) The inner shape of this outer frame A step of accommodating an inner frame formed of a metal mesh having the same outer shape and having a mesh of about 5 to 12 cm and having an upper opening in the outer frame; Process. 2. A sediment used in a sedimentation method for protecting a river bed, the outer frame being formed by a log material in a size corresponding to a portion requiring protection of the river bed, and the inside of the outer frame. 5 to store
A sedimentation floor, characterized by being constituted by a box-shaped inner frame having an opening at the top by a metal mesh having a mesh of about 12 cm.