JPH11286940A - Hillside erosion control net ring and construction method of hillside erosion control net using the ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an erosion control net which is entirely uniform and deformable according to the irregularities of the erosion control position of a hillside. SOLUTION: This erosion control net is formed by vertically and horizontally connecting a number of rings 4. This ring 4 is formed of a metal wire rod, and it has engagement 5, 5 for making the wire rod into a ring by mutual engagement on both ends, and two connecting rings 6, 6 at intervals in the middle of the wire rod. The connecting ring 6 mutually connects the rings 4 by passing the outer ring 4 from the engagement part 5 on end therefore.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hillside sabo net ring and a hillside sabo net construction method using the ring.

[0002]

2. Description of the Related Art There is a wire net method as an example of hillside sabo. This involves forming a net by stretching a large number of ropes (wires) vertically and horizontally on the sabo site on the hillside and connecting the intersections of the ropes with each other. It is fixed. In addition, in the rope laying method, a diamond-shaped wire mesh is put on the wire net, and an appropriate portion of the wire mesh is connected to the rope, and the rope and the wire mesh are used in combination.

[0003]

In the wire net method, small rock fall cannot be prevented unless the mesh of the net is made fine. In the above-mentioned rope laying method, small falling rocks can be prevented by a wire mesh, but it is difficult to provide a diamond-shaped wire mesh along with the sabo where there are irregularities. This is because it is easy to bend the rhombic wire net so as to make a fold extending in the column line direction, but it is difficult to bend it so as to make a fold extending in the direction crossing the column line. . In addition, since the diamond-shaped wire mesh does not bend freely in this way, when rockfall occurs, stress tends to concentrate on the place where the rockfall occurs in the diamond-shaped wire mesh, so that stones and rocks collapsed from the hillside do not stop in the wire mesh. There is a risk that the wire mesh will be broken and fall.

[0004] Further, when there is a standing tree at a sabo location, it is necessary to divide the diamond-shaped wire mesh at that portion and to connect the divided diamond-shaped wire mesh separately around the standing tree. Also, in the case of a diamond-shaped wire mesh, there is a manufacturing limit to lengthening the line, so if the area to be sabo is wide, the adjacent diamond-shaped wire meshes are partially overlapped to form a line. It is necessary to connect in the longitudinal direction. However, providing such an overlapping portion wastes material and makes it difficult to attach the wire net to the mountain surface, and furthermore, the strength of the net as a whole is not uniform. Stress tends to concentrate on the part.

Therefore, according to the present invention, it is possible to form a sabo net which is deformed in accordance with the unevenness of the sabo place on the hillside and is uniform as a whole. An object of the present invention is to provide a ring capable of easily forming a vacant portion, and a hillside sabo net construction method using such a ring.

[0006]

SUMMARY OF THE INVENTION A hillside sabo net ring according to the present invention is provided for forming a sabo net covering a hillside for sabo protection. An engagement portion for forming a ring shape is formed, and at least two connection rings for connecting the rings with each other through another ring from one end thereof in the middle of the wire rod are provided at intervals. It is characterized by being formed.

The hillside sabo net ring can be formed into a ring shape by engaging the engaging portions at both ends of the wire. When there are two rings, the two rings can be connected by passing one of the rings from the engaging portion at the end to the connecting ring of the other ring. Paying attention to one ring, this one ring is provided with two connecting rings at an interval, so that the two rings are connected by passing another ring through each connecting ring. The ring can be connected to another ring by passing the ring through a connecting ring of another ring.

[0008] The two connecting rings can be arranged around the center of the ring at a distance of, for example, about 90 degrees, about 120 degrees or about 180 degrees. Here, "about" means that there is no problem even if there is a difference of about ± 10 degrees, for example.

When the two connecting rings are separated from each other by about 90 degrees, a large number of rings are two-dimensionally arranged vertically and horizontally with the same direction of the connecting rings as viewed from the center of each ring. If the rings that are vertically and horizontally adjacent to each other are connected by a connecting ring, a sabo net can be formed. When two connecting rings are separated from each other by about 180 degrees, a number of rings are two-dimensionally arranged vertically and horizontally such that a ring in which two connecting rings are arranged vertically and a ring arranged in a horizontal direction are alternately arranged. If the rings that are vertically and horizontally adjacent to each other are connected by a connecting ring, a sabo net can be formed. About two connecting rings
When separated by 20 degrees, a set of six rings are arranged at the vertices of a regular hexagon, and this hexagon can form a tortoise-shaped sabo net in which the hexagons are arranged vertically and horizontally.

The ring may have a circular, elliptical or square shape.
For example, the ring shape may be rectangular, and the connecting ring may be provided at a corner of the rectangle. Of course, the ring shape may be a polygonal shape other than a rectangle.

In such a sabo net formed by connecting a number of rings, adjacent rings are not fixed in connection with each other, and one ring is connected to the connecting ring of the other ring. The connecting position can be changed, and both rings can be turned (rotated) in any direction with respect to the other ring to some extent, so that the net shape can be changed relatively freely.

Therefore, even if there are irregularities in the sabo place on the hillside, the irregularities can be easily formed in the sabo net by rotating the rings and the like, and the sabo net can be stretched along the irregularities in the sabo place. it can. In addition, even if the hillside partially collapses, the rings rotate and shift over a relatively wide range according to the movement of the rocks and rocks at that part, and the net does not concentrate stress on a specific ring. The shape changes and the impact of falling stones and rocks is absorbed. For this reason, stones and rocks stop in the sabo net and destruction of the net is avoided.

It is conceivable that the rings are connected to each other like a ring of an Olympic mark, for example, without providing a connecting ring in each ring. However, since the degree of freedom of each ring becomes too high, a sabo net is used. In this case, the net shape is easily changed by a relatively small force, and a sufficient restraining force for holding down the mountain surface so as not to cause falling rocks cannot be obtained. It is also conceivable to connect the connecting rings of the rings with different connecting metal fittings, but the number of parts of the sabo net increases and the connecting work becomes complicated.

The engagement portions at both ends of the hillside sabo net ring can be formed, for example, by bending the wire end into a U-shape and folding it back. In this case, the folded portions of the U-shaped engaging portions can be connected to each other by hanging the mating sides.

The connecting ring in the middle of the hillside sabo net ring is formed by bending a middle portion of the wire so as to be formed outside the ring by a part of the wire. It is preferable that the ring and the ring be substantially orthogonal to each other. With this configuration, the connecting rings protrude outside the ring, so that the rings can be easily connected to each other. Further, since the connecting rings are substantially perpendicular to the rings, each ring surface to be connected is connected. To obtain a sabo net arranged on the same plane.

The invention relating to the hillside sabo net construction method of the present application is a method using the hillside sabo net ring as described above. That is, it has an engaging portion for making the wire into a ring shape by engaging with both ends of the wire, and a connecting ring formed at least two intervals in the middle of the wire. Repeating the work of preparing a plurality of rings and connecting the rings by passing another ring from one end to the connecting ring of one ring and engaging both ends at the engaging portion Thus, a net formed by connecting a plurality of rings vertically and horizontally is formed, and the net is fixed to a sabo place on a mountainside.

If there is a standing tree, the net may be formed by partially removing the ring at the site.

When the ring shape is rectangular and the connecting ring is provided at a corner of the rectangle, the adjacent rings are connected to the connecting ring of the other ring at the corner of one ring. Are engaged and connected. Thereby, the net shape is stabilized.

In another aspect of the hillside sabo net construction method of the present invention, in the hillside sabo net construction method as described above, the step of forming the net comprises connecting a plurality of rings vertically and horizontally to form a square small net. Forming a large net covering the hillside by laying out a plurality of the small nets vertically and horizontally on a sabo place on the hillside and connecting adjacent rings of these small nets by similar rings. Forming a net, in the step of fixing the net to a sabo place, fixing one end of each of a plurality of ropes around the sabo place at a predetermined interval,
Each rope is sequentially passed through the connecting ring of each ring of the ring row extending vertically or horizontally from the fixed point at one end of the large net and stretched vertically and horizontally at the sabo place, and the other end of each rope is placed around the sabo place. The large net is fixed to the hillside by fixing the intersection of the ropes to each other and fixing the intermediate portion of each rope to the sabo location.

In the above-described hillside sabo net construction method, the small net may be manufactured near the site (a sabo site on the hillside) or may be manufactured at a factory and transported to the site. At a sabo location, multiple small nets are laid out vertically and horizontally to connect adjacent small nets with a ring, but since the ring for this connection is the same as the ring that forms the small net, the large net is the same ring. Are arranged vertically and horizontally, there is no overlap between small nets, and the strength is uniform over the entire large net. If there is a tree partially in the sabo area, a small net may be set around this tree. The free space of the net created by the tree can be made as small as possible by adding another ring to the ring of the small net around the space.

The rope for fixing the large net to the hillside is connected to the large net by passing through a connecting ring of each ring of an appropriate ring row extending in the vertical and horizontal directions. Therefore, a dedicated joint for connecting the ring and the rope is provided. There is no need to provide it separately.

Another invention of this application relates to a combination of a first ring for hillside sabo net and a second ring for hillside sabo net for forming a sabo net covering the hillside, wherein the first ring is: It has four connecting rings arranged at equal intervals around the entire circumference and protruding outward,
One connecting ring of each of the four rings forming one unit lattice is arranged at each lattice point of the plane square lattice and arranged so as to protrude toward the center of the unit lattice. , The second ring is provided with an engaging portion for making the wire into a ring shape by engaging with both ends of the wire, and is provided at the center of each unit lattice constituted by the arrangement of the first ring. It is characterized by being arranged to pass through four connecting rings facing each other of the four first rings constituting the unit cell and to connect these four first rings.

Still another invention of this application is a combination of a first ring for a hillside sabo net and a second ring for a hillside sabo net for forming a sabo net covering the hillside, wherein the first ring comprises: It is provided with three connecting rings arranged at equal intervals around the entire circumference and protruding outward,
Arranged at each lattice point of a plane triangular lattice and arranged such that one connecting ring of each of three rings constituting one triangular unit lattice projects toward the center of the triangular unit lattice. The second ring includes an engagement portion for engaging the both ends of the wire with each other to form the wire into a ring shape, and each triangular unit lattice formed by the arrangement of the first ring Located in the center of
The three first rings constituting the triangular unit cell are passed through three connecting rings facing each other to connect these three first rings.

Still another invention of this application is a combination of a first ring for a hillside sabo net and a second ring for a hillside sabo net for forming a sabo net covering the hillside, wherein the first ring comprises: It has six connecting rings arranged at equal intervals around the entire circumference and protruding outward,
Arranged at each lattice point of a plane triangular lattice and arranged such that one connecting ring of each of three rings constituting one triangular unit lattice projects toward the center of the triangular unit lattice. The second ring has an engaging portion for engaging the both ends of the wire with each other to make the wire into a ring shape, and each positive triangular formed by the arrangement of the first ring. It is arranged at the center of each triangular unit lattice opposite to the center of the unit lattice, and is passed through three connecting rings facing each other of the three first rings constituting each triangular unit lattice to connect these three first rings. It is characterized by being.

In the case of the invention relating to the combination of the hillside sabo net ring, the sabo net can be formed by the combination of the first ring and the second ring. Similar effects can be obtained. Further, the second ring is a dedicated ring for connecting the first rings to each other, and it is not necessary to provide a connecting ring in the second ring, so that the rings can be easily connected. Further, the first ring has a plurality of connecting rings arranged at equal intervals over the entire circumference and has isotropy, and the second ring is also located at the center of the unit cell and is equal to the surrounding first ring. Due to the anisotropy, the resulting net is homogeneous throughout and has high durability.

A rope for fixing the net to the hillside can be passed through the connecting ring of the first ring. As in the case of the hillside sabo net ring described first, the connection ring can be made substantially orthogonal to the ring to facilitate connection between the rings.

Further, the first ring is a polygonal ring having a corner at each portion where the connecting ring is provided, and the second ring is provided with a corner portion with which the connecting ring of the first ring is engaged. It can be a polygonal ring. With this configuration, the net shape is such that the polygonal rings are connected to each other by the connecting ring, the appearance is improved, and the connecting position between the first ring and the second ring is determined, and the sabo is highly stable in shape. You will get a net.

Of course, each of the first ring and the second ring may be a circular ring, and the first ring may be a polygonal ring and the second ring may be a circular ring, or the first ring may be a circular ring. The second ring may be a polygonal ring.

[0029]

Therefore, according to the hillside sabo net ring according to the present invention, since the wire has the engaging portions at both ends and has at least two connecting rings in the middle at intervals. By connecting a large number of rings vertically and horizontally by using, a sabo net that can be appropriately deformed can be formed without using special connecting tools, and it can be attached to the sabo place with irregularities As a result, the sabo net can be set up, and even if the hillside slightly collapses, the impact at that time can be absorbed by the deformation of the net,
The destruction of the net is avoided, which is advantageous for rock fall prevention.

[0030] In particular, according to the above-mentioned ring shape having a rectangular shape and a connecting ring provided at a corner of the rectangular shape, when the rings are connected to each other, the connecting ring of the other ring is connected to the corner of one of the rings. The rings can be engaged and connected,
The connecting operation becomes easy and the obtained net shape is stabilized.

The connecting ring in the middle of the hillside sabo net ring is formed by bending a middle portion of the wire so as to be formed outside the ring by a part of the wire. According to the structure in which the rings and the rings are substantially orthogonal to each other, the rings can be easily connected to each other, and the connecting rings are substantially orthogonal to the rings. A sabo net placed above can be obtained.

According to the invention related to the hillside sabo net construction method of this application, a plurality of rings as described above are prepared, and another ring is passed through one end of the ring for connection of one ring, and both ends of the ring are engaged at the engagement portion. By repeating the work of connecting the rings by engaging each other, a net formed by connecting a plurality of rings vertically and horizontally was formed, and this net was fixed to the sabo place on the hillside, so that the net When it is easy to form and there is a standing tree, it is possible to form a net by partially deleting the ring at the site.

Further, according to the construction method in which a small net is prepared in advance by the ring as described above, and the small net is arranged vertically and horizontally at a sabo place and connected by a ring, the number of work steps on site can be reduced, It is possible to form a large net with no overlap and a uniform, wide and uniform strength over the whole. It is also easy to stretch the net while avoiding trees. Are passed through the connecting ring of the ring, so that a special connecting tool is not required.

According to the combination of the hillside sabo net ring according to the present invention, the first ring having a plurality of connecting rings arranged at equal intervals over the entire circumference and arranged at the lattice points of a predetermined plane lattice. And a second ring that is arranged at the center of the unit lattice of the plane lattice and connects a plurality of surrounding first rings. Which is advantageous in strength and durability.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIG. 1 shows a sabo net 1 constructed at a sabo site on a hillside. This sabo net 1 includes a large net 2 composed of a large number of rings and a large net. 2 is fixed to the hillside.

<Regarding the Ring> FIG.
A first ring 4 is shown for forming. The first ring 4 is formed with engaging portions 5 and 5 for making the wire into a ring shape by engaging with both ends of the metal wire, and two connecting rings in the middle of the wire. 6 and 6 are formed at intervals, and FIG.
When both end engaging portions 5 and 5 are engaged with each other as shown in FIG.
It becomes a circular ring.

The wire of the first ring 4 is preferably a steel wire (including a plated iron wire). The engaging portions 5, 5 at both ends are
It is formed by bending a wire end portion into a U-shape and folding it, and the bending directions of the wire end portions at the time of folding are orthogonal to each other. Accordingly, the engagement between the engaging portions 5 and 5 is performed by hanging the folded portions orthogonal to each other.

The connecting ring 6 is a ring (circular ring) smaller than the ring diameter of the ring 4 for connecting the rings by passing another ring 4 from the engaging portion 5 at one end thereof. However, the inner diameter of the connecting ring 6 is the same as that of the engaging portion 5 described above.
Is larger than the lateral width of the engaging portion 5 because of the need to pass through. The rope 3 is passed through the connecting ring 6 as necessary. Therefore, the inner diameter of the connecting ring 6 is formed to be large enough to pass the rope 3 in addition to the ring 4. As shown in FIGS. 3 and 4, the two connecting rings 6, 6 are in a positional relationship separated by 90 degrees around the center of the ring. Further, the engaging portions 5, 5
Is located around one ring center from one connecting ring 6.
5 degrees away.

The connecting ring 6 is formed outside of the first ring 4 by bending a middle portion of the wire of the first ring 4 to form a part of the wire.
The direction of the ring holes of the and the ring 4, in other words, the respective ring surfaces are substantially orthogonal to each other. Further, as shown in FIG. 5, the gap at both ends of the connecting ring 6 needs to be smaller than the wire diameter of the ring 4 so that the connected ring 4 does not come off.

The dimensions of each part of the first ring 4 are as follows.
For example, the wire diameter (diameter) is about 5 mm, the inner diameter of the ring 4 is about 200 mm, and the inner diameter of the connecting ring 6 is about 30 mm. The wire diameter, the ring diameter, and the connecting ring diameter are appropriately changed. be able to.

FIG. 6 shows how the first ring 4 is used. That is, the first ring 4 shown in the center of FIG.
The upper first ring 4 and the right first ring 4 are respectively passed through the connecting rings 6 and 6 located on the upper side and the right side, and are connected to these rings 4 and 4. Also,
The central first ring 4 is passed through the connecting ring 6 on the right side of the first ring located on the left side and is connected to the left ring 4, and is connected on the upper side of the first ring 4 located therebelow. The lower ring 4 is connected to the lower ring 4 through the use ring 6. In addition, the rope 3 passes through the connecting ring 6 on the right side of the first ring 4 at the center together with the right ring 4.

FIGS. 7 and 8 show a second ring 7 for forming the large net 2. Most of the large net 2 is formed by the first ring 4. The second ring 7 is used at the end of the large net 2 as necessary. This will be described later. The second ring 7 is basically the same as the first ring 4, except that it has three connecting rings 6. That is, 3
The two connecting rings 6, 6, and 6 are sequentially 90 around the center of the ring.
It is provided apart by degrees.

<About the mountainside sabo>
An example of the hillside sabo using No. 7 will be described.

As shown in FIG. 9, the large net 2 is formed by sequentially connecting a large number of small nets 8 by the first ring 4 (using the second ring 7 as necessary). I have. In this example, the second ring 7 is used for the leftmost vertical row of rings and the lowermost horizontal row of rings forming the large net 2, and the first ring 4 is used for the other rings.

The first rings 4 are all arranged such that one of the two connecting rings 6, 6 protrudes upward and the other protrudes to the right, and the second ring 7 on the left end is all three connecting rings. One of the rings 6, 6, 6 is arranged to project upward, the other to the right, and the other one to the left, and the second ring 7 at the lower end except for the left end One of the three connecting rings 6, 6, 6
The other one is arranged so as to project to the right, and the other one so as to project downward.

At the upper end of the large net 2, the upper horizontal rope 3 is passed through each connecting ring 6 protruding upward from the ring arranged in a row, and at the lower end each coupling protruding downward from the ring arranged in a horizontal line. A lower horizontal rope 3 is passed through a ring 6, and a plurality of horizontal ropes 3 are stretched at intervals in the middle at the middle.
It is passed through a connecting ring 6 protruding upward from an appropriate ring in a line. At the left end of the large net 2, the left vertical rope 3 is passed through each connecting ring 6 protruding leftward of the ring arranged in one vertical line, and at the right end of the ring (not shown in FIG. 8) A right vertical rope is passed through each connecting ring protruding toward the center, and a plurality of vertical ropes 3 are also stretched at intervals in the middle at the middle. The ring is passed through a connecting ring 6 protruding rightward of an appropriate ring in a line.

Both ends of the rope 3 are fixed by driving an anchor 9 around the sabo place on the hillside.
The intersections 10 of the vertical and horizontal ropes 3 are connected to each other,
A plurality of intermediate portions of each rope 3 are fixed to the hillside by anchors (not shown) at appropriate intervals.

To explain the method of construction, first, the small nets 8 except for the small nets arranged at the upper end and the left end of the large net 2 have a total of 25 first rings 4 vertically and horizontally. 5
It is formed by connecting vertically and horizontally so as to line up. On the other hand, as for the small net 8 arranged at the left end of the large net 2, the second ring 7 is used for the ring of the small end of the small net 8 in one vertical line, and for the small net 8 arranged at the lower end of the large net 2. Uses the second ring 7 for the ring in the lower end of the small net 8 in one row.

One end of the upper horizontal rope 3 to be stretched along the upper edge of the sabo place on the hillside is fixed to the hillside with the anchor 9. The necessary number of small nets 8 are sequentially passed through the upper horizontal rope 3,
The other end and the intermediate portion of the upper horizontal rope 3 are fixed to the hillside with an anchor (not shown). The small nets 8, 8 adjacent to each other on the left and right are arranged with one row of five first rings 4 therebetween, and the first rings 4, 4 in the end row of the small nets 8, 8 facing each other. Connect each other.

The small nets 8 in the second row are arranged below (valley side) each of the small nets 8 in the first row, and the small nets 8 adjacent to each other above and below are arranged in a horizontal line. First rings 4
Linked by However, since the left end ring of the left end small net 8 is the second ring 7, the upper and lower second rings 7,
The second ring 7 is used for the connection of the first ring 7. The small nets 8 adjacent to each other on the left and right of the second row are also connected to each other using the first ring 4. Similarly, the first ring 4 for connection provided between the small nets 8 in the first row and the first ring 4 for connection provided between the small nets 8 in the second row are similarly provided. They are connected by a first ring 4.

In the above manner, the third and fourth columns,...
The small net 8 is connected by a ring to form the large net 2 that covers the entire sabo area. If there is a tree in the sabo area, a small net 8 is set around the tree with the part where the tree exists as an empty space. This empty space is made as narrow as possible by sequentially adding another first ring 4 to the first ring 4 of the small net 8 on the periphery of the space. Further, when the small net 8 is extended to the vicinity of the lowermost end of the sabo place and the small net 8 is further added, if there is more net, the ring may be added without adding the small net 8. However, the lowermost ring must be the second ring 7.

The upper ends of the plurality of vertical ropes 3 are fixed with anchors 9 at predetermined intervals (for example, 2 m intervals) from the left end to the right end outside the upper edge of the sabo place, and each vertical rope 3 and the upper end are fixed. The intersection 10 with the horizontal rope 3 is connected.
Then, the vertical rope 3 at the left end passes through the connecting rings 6 protruding to the left of the second rings 7 arranged in a line at the left end of the large net 2 in order from the top. Similarly, the middle and right end vertical ropes 3 are passed through the connecting ring 6 of the first ring 4 which is arranged in a vertical line.
The lower ends of these vertical ropes 3 are fixed to a hillside or a road shoulder under a sabo place by an anchor 9, and an intermediate portion thereof is also fixed to the hillside by an anchor.

The vertical rope 3 at the left or right end of the sabo place
One end of the intermediate horizontal rope 3 and one end of the lower horizontal rope 3 are fixed to the outside of the
And the intersection 10 with the vertical rope 3 at the end. These horizontal ropes 3 are successively passed through the connecting rings 6 of the middle ring and the lower end ring arranged in a row in the horizontal direction of the large net 2, and the other ends are fixed to the hillside outside the sabo place by anchors. And the intersection with the other vertical rope 3 is connected.

In the above method, the rope 3 is stretched after the large net 2 is formed. However, when the small net 8 is connected to another small net 8 by a ring, the ring of the small net 8 or the like is simultaneously formed. The connecting work of the small net 8 and the stretching work of the rope 3 may be performed in parallel by passing the rope 3 through the connecting ring 8.

In the rings 4, 7, the engaging portions 5, 5
As shown in FIG. 10, the folded portions of the wire ends are made longer and the bending directions for the folded portions are opposite to each other, as shown in FIG.
It may be 1. In such engagement portions 11, 11, both engagement portions 11, 11 can be tightly engaged by barking.

(Embodiment 2) This embodiment relates to FIGS.
5 relates to a combination of a first ring 21 for a hillside sabo net and a second ring 22 for a hillside sabo net for forming a sabo net covering the hillside.

As shown in FIG. 11, the first ring 21
The connection ring 24 protrudes outward from each of the four vertexes of the square ring body 23. This connecting ring 2
As shown in FIG. 12, reference numeral 4 is formed by bending a part of the wire rod in the same manner as in the first embodiment, and is substantially orthogonal to the ring main body 23.

As shown in FIG. 13, the second ring 22
It is provided with engaging portions 25, 25 for engaging the both ends of the wire with each other to make the wire into a ring shape, and is a square ring. The engaging portion 25 has the same configuration as the engaging portion 5 of the ring 4 of the first embodiment.

The first ring 21 and the second ring 22 can be formed of one metal wire, and the first ring 2
1 can complete a ring by welding both ends of a wire. Of course, two connecting rings 24, 24
May be formed, and the ends of the two U-shaped ring members may be welded to each other to complete one first ring 21.

In forming the hillside sabo net, FIG.
As shown in FIG. 4, the first ring 21 is
6 and arranged such that one connecting ring 24 of each of the four first rings 21 forming one unit lattice projects toward the center of the unit lattice. . Regarding the second ring 22, the first ring 2
It is arranged at the center of each unit cell constituted by one array.

The engaging portion 2 of the second ring 22
In a state in which the engagement of the first and second engagement rings 25 and 25 is released, the first and second engagement rings 25 and 25 at both ends are engaged with each other by sequentially passing through the four connecting rings 24 facing each other of the four first rings 21 constituting the unit lattice. . By repeating this operation, FIG.
Can be obtained. Also, the first
By partially omitting the ring 21 and the second ring 22, a perforated net for standing trees can be formed. The rope 3 for fixing the net 27 to the hillside can be passed through the connecting ring 24 of the first ring 21.

(Embodiment 3) This embodiment is shown in FIG. 16, in which a first ring 31 for a hillside sabo net and a second ring 32 for a hillside sabo net for forming a sabo net covering the hillside. Regarding the combination.

The first ring 31 has a connecting ring 34 protruding outward from each of the three vertices of the triangular ring main body 33. The connecting ring 34 is formed by bending a part of the wire rod as in the previous embodiment, and is substantially perpendicular to the ring main body 33.
The second ring 32 is provided with an engaging portion (not shown) for making the wire into a ring shape by engaging with both ends of the wire, and is a triangular ring. This engaging portion has the same configuration as that of the second embodiment. The first ring 31 and the second ring 32 can be formed in the same manner as in the second embodiment.

In forming the hillside sabo net, the first
The ring 31 is arranged at each lattice point of the plane triangular lattice 36, and the three first rings 31 forming one triangular unit lattice
Are arranged such that each one of the connecting rings 34 protrudes toward the center of the triangular unit cell. The second ring 32 is arranged at the center of each triangular unit lattice formed by the arrangement of the first rings 31, and sequentially connected to the three connecting rings 34 facing each other of the three first rings 31 constituting the unit lattice. And the engaging portions at both ends are engaged with each other. The sabo net 37 can be obtained by repeating this operation. In addition, by partially missing the first ring 31 and the second ring 32, it is possible to form a perforated net for standing trees. First ring 31
The rope 3 for fixing the net 37 to the hillside can be passed through the connecting ring 34.

(Embodiment 4) This embodiment is shown in FIG. 17, in which a first ring 41 for a hillside sabo net and a second ring 42 for a hillside sabo net for forming a sabo net covering the hillside. Regarding the combination.

In the first ring 41, a connecting ring 44 projects outward from each of the six vertices of a hexagonal ring main body 43. The connecting ring 44 is formed by bending a part of the wire rod as in the previous embodiment, and is substantially perpendicular to the ring main body 43.
The second ring 42 is provided with an engaging portion (not shown) for making the wire into a ring shape by engaging with both ends of the wire, and is a triangular ring. This engaging portion has the same configuration as that of the second embodiment. The first ring 41 and the second ring 42 can be formed in the same manner as in the second embodiment.

In forming the hillside sabo net, the first
The ring 41 is arranged at each lattice point of the planar triangular lattice 46, and three first rings 41 forming one triangular unit lattice
Are arranged such that each one of the connecting rings 44 projects toward the center of the triangular unit cell. The second rings 42 are arranged at the center of each of the positive triangular unit cells and the center of each of the opposite triangular unit cells formed by the arrangement of the first rings 41, and the three first rings 41 forming the unit cell are formed. Are sequentially passed through the three connecting rings 44 facing each other to engage the engaging portions at both ends. The sabo net 47 can be obtained by repeating this operation. Also, by partially missing the first ring 41 and the second ring 42, a perforated net for standing trees can be formed. Connecting ring 44 of first ring 41
Can pass through the rope 3 for fixing the net 47 on the hillside.

(Embodiment 5) This embodiment is described with reference to FIGS.
2 and a first ring 51 shown in FIG.
0 and the third ring 5 shown in FIG.
3 is used to form a sabo net 54 as shown in FIG.

That is, the first ring 51 shown in FIG.
Is formed of a single wire, and forms a rectangular ring by engaging the engaging portions 55 formed at both ends thereof. The engaging portion 55 at one end is formed in an annular shape in advance by folding back the end of the wire, and the engaging portion 55 at the other end is formed by folding the end of the wire in U-shape in advance, and from the folded end. It is inserted into the annular engagement portion 55 at the other end. This other end engaging portion 5
5 can be prevented from disengaging the engagement portions 55, 55 as an annular engagement portion by strongly bending with a tool as necessary after the insertion (this point is the same in the previous embodiment). is there.). And two adjacent to this rectangular ring
At two corners, connecting rings 56, 56 are formed to protrude outward from the ring. As shown in FIG. 19, the surface of the connecting ring 56 is twisted by 90 degrees with respect to the ring surface. Also,
The engaging portions 55 are arranged at one corner of the rectangular ring.

The second ring 52 shown in FIG.
A rectangular ring having the same shape as the ring 51,
5 and 55, but is different in that connecting rings 56 are provided at three corners. Third ring 5 shown in FIG.
Reference numeral 3 denotes a rectangular ring having the same shape as the first ring 51,
Although similar engaging portions 55 and 55 are provided,
55 is a point located in the middle of one side of the rectangle;
The difference is that a connecting ring 56 is provided at one corner.
In addition, the third ring 53 can be engaged with the engagement portions 55 at both ends thereof in advance. This is because the third ring 53 allows the other ring to pass through the connecting ring 56, and does not pass the third ring 53 itself through the connecting ring 56 of the other ring.

The manner of connection between the rings is shown in FIG. 22 as an example of the first ring 51. That is, one ring 51
With the engaging portions 55, 55 at both ends of the
The engagement portion 55 at one end is connected to two adjacent rings 51,5.
1 through the connecting rings 56, 56 in order.
5 is engaged. This adjacent ring 51,
The connecting rings 56 of the 51 are engaged with the ring corners of the one ring 51 where the connecting ring 56 does not exist. First
Connection between ring 51 and second ring 52, second ring 5
2 and 52, the second ring 52 and the third ring 53
The same applies to the connection with.

By connecting the first to third rings 51 to 53 vertically and horizontally, a sabo net 54 shown in FIG. 23 is obtained. In the same net 54, the ring arranged in the lower right corner is the third ring 53, the remaining five rings on the right side and the remaining five rings on the lower side are the second rings 52, and the remaining rings are all This is the first ring 51.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a mountainside sabo according to a first embodiment.

FIG. 2 is a perspective view of a first ring of the same embodiment.

FIG. 3 is a front view of a first ring of the same embodiment.

FIG. 4 is a side view of the first ring of the same embodiment.

FIG. 5 is a front view of a gap in a connecting ring of the first ring of the same embodiment.

FIG. 6 is a perspective view showing a use state of the first ring of the embodiment.

FIG. 7 is a front view of a second ring of the same embodiment.

FIG. 8 is a side view of a second ring having the same configuration.

FIG. 9 is an explanatory view of a hillside sand control method of the same embodiment.

FIG. 10 is a front view showing a state in which both ends of the ring are engaged with each other by means of a scissors.

FIG. 11 is a front view of a first ring according to the second embodiment.

FIG. 12 is a side view of the first ring of the same embodiment.

FIG. 13 is a front view of a second ring of the same embodiment.

FIG. 14 is an enlarged front view of a part of the sabo net of the same embodiment.

FIG. 15 is a front view showing a part of the sabo net of the same embodiment.

FIG. 16 is a front view showing a part of the sabo net of the third embodiment.

FIG. 17 is a front view showing a part of the sabo net of the fourth embodiment.

FIG. 18 is a front view of a first ring according to the fifth embodiment.

FIG. 19 is a front view of an engagement portion of the ring.

FIG. 20 is a front view of a second ring of the same embodiment.

FIG. 21 is a front view of a third ring of the same embodiment.

FIG. 22 is a front view showing a ring connection mode of the same embodiment.

FIG. 23 is a front view of the sabo net of the same embodiment.

[Explanation of symbols]

 1,27,37,47,54 Sabo net 2 Large net 3 Rope 4,21,31,41,51 First ring 5,25,55 Engagement part 6,24,34,44,56 Connection ring 7, 22, 32, 42, 52 Second ring 8 Small net 9 Anchor 10 Intersection 11 Engagement part 26 Planar square lattice 36 Planar triangular lattice 53 Third ring

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Masamichi Hasegawa 19, Nakahama-cho, Amagasaki-shi, Hyogo Nichia Steel Industry Co., Ltd. (72) Inventor Kazuhiro Arika 19, Nakahama-cho, Amagasaki-shi, Hyogo Nichia Steel Industry In-company (72) Inventor Takashi Maeda 19, Nakahama-cho, Amagasaki-shi, Hyogo Nichia Corporation

Claims (11)

[Claims] 1. A hillside sabo net ring for forming a sabo net covering a hillside, wherein an engaging portion for making the wire into a ring shape is formed by engaging both ends of the wire with each other. A ring for a hillside sabo net, wherein at least two connecting rings are formed at an interval between the wires to connect another ring from one end thereof to connect the rings. . 2. The hillside sabo net according to claim 1, wherein the ring shape is rectangular, and the connecting ring is provided at a corner of the rectangle. Ring. 3. The ring for a hillside sabo net according to claim 1, wherein the engaging portions at both ends are formed by bending an end portion of a wire into a U-shape and folding the wire end. Is formed by a part of the wire by bending the wire middle part, the connection ring is provided outside the ring, and the connection ring and the ring are mutually A hillside sabo net ring that is substantially orthogonal. 4. An engagement portion for making the wire into a ring by engaging both ends of the wire with each other, and at least two connecting rings are provided between the wires at intervals. A plurality of formed rings are prepared, and the operation of repeating the operation of passing the other ring through the connecting ring of one ring from one end thereof and engaging the both ends at the engaging portion to connect the rings is repeated. Thereby forming a net in which a plurality of rings are connected vertically and horizontally, and fixing the net to a sabo location on a hillside. 5. The hillside sabo net construction method according to claim 4, wherein the ring has a rectangular shape, and the connecting ring is provided at a corner of the rectangle. The hillside sabo net construction method, wherein the rings are connected by engaging a connection ring of the other ring with a corner of one of the rings. 6. The hillside sabo net construction method according to claim 4 or 5, wherein the step of forming the net includes connecting a plurality of rings vertically and horizontally to form a square small net. Forming a large net covering the hillside by laying a plurality of the small nets vertically and horizontally on a hillside sabo place and connecting adjacent rings of these small nets with similar rings; In the step of fixing the net to the sabo place, one end of each of a plurality of ropes is fixed at a predetermined interval around the sabo place, and each rope is fixed to the large net from a fixing point at one end thereof. While sequentially passing through the connecting rings of each ring of the ring row extending vertically or horizontally, stretching vertically and horizontally to the sabo place, fixing the other end of each rope to the opposite side around the sabo place,
A hillside sabo net construction method comprising fixing the large net to a hillside by connecting intersections of the ropes and fixing an intermediate portion of each rope to the sabo place. 7. A combination of a first ring for a hillside sabo net and a second ring for a hillside sabo net for forming a sabo net covering the hillside, wherein the first rings are arranged at equal intervals around the entire circumference. And four connecting rings protruding outwardly, one connecting ring of each of the four rings arranged at each lattice point of the planar square lattice and forming one unit lattice is connected to the unit lattice. The second ring is provided with an engagement portion for engaging the both ends of the wire with each other to make the wire into a ring shape. These four first rings are arranged at the center of each unit lattice constituted by the arrangement of the first rings, and are passed through four connecting rings facing each other of the four first rings constituting the unit lattice. What connects the rings The combination of the ring for hillside erosion control nets, characterized in that. 8. A combination of a first ring for a hillside sabo net and a second ring for a hillside sabo net for forming a sabo net covering the hillside, wherein the first rings are arranged at equal intervals around the entire circumference. And three connecting rings protruding outwardly, and one connecting ring of each of three rings arranged at each lattice point of the plane triangular lattice and forming one triangular unit lattice is provided with the triangular shape. The second ring is arranged so as to protrude toward the center of the unit lattice. The second ring engages with both ends of the wire to form an engagement portion for making the wire into a ring shape. These are arranged at the center of each triangular unit lattice constituted by the arrangement of the first rings, and are passed through the three connecting rings facing each other of the three first rings constituting the triangular unit lattice. Three first The combination of the ring for hillside erosion control nets, characterized in that the connecting ring. 9. A combination of a first ring for a hillside sabo net and a second ring for a hillside sabo net for forming a sabo net covering the hillside, wherein the first rings are arranged at equal intervals around the entire circumference. And six connecting rings protruding outward, and one connecting ring of each of three rings arranged at each lattice point of the planar triangular lattice and forming one triangular unit lattice is provided with the triangular shape. The second ring is arranged so as to protrude toward the center of the unit lattice, and the second ring forms an engagement portion for making the wire into a ring shape by engaging with both ends of the wire. The three first rings constituting each triangular unit lattice are arranged at the center of each triangular unit lattice opposite to the center of each positive triangular unit lattice constituted by the arrangement of the first rings. Three facing connections It is passed through a ring combination hillside erosion control nets for rings, characterized in that connecting these three first ring. 10. The combination of the hillside sabo net ring according to any one of claims 7 to 9, wherein a connecting ring of the first ring is substantially orthogonal to the ring. Combination of hillside sabo net ring. 11. The combination of the hillside sabo net ring according to any one of claims 7 to 9, wherein the first ring has a plurality of corners at each part where the connecting ring is provided. A combination of rings for a hillside sabo net, wherein the ring is a square ring, and the second ring is a polygonal ring having a corner portion with which the connecting ring of the first ring engages.