JP2001140238A - Slope structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slope structure capable of largely forming an inside space to increase a quantity of infilled filler, keeping good permeability thereby to maintain a natural environment, at the same time, having high work efficiency in the case of construction, having no restriction on size or the like of the filler, using surplus soil generated when work is carried out in a construction site as it is and reducing a construction cost of a slope including a transportation cost of materials. SOLUTION: Cylindrical bodies E formed by a metal material having a large number of open-holes such as expanded metal, wire netting or the like are constructed on a slope, and for such a slope structure as the insides of the cylindrical bodies E are filled with filler F such as crushed stone or the like, non-woven fabric layers I and J laminating coarse non-woven fabrics I1 and J1 of coconut fabric or the like and fine non-woven fabrics I2 and J2 of polypropylene or polyester long fabric or the like so as to prevent the filler F infilled to the insides of the cylindrical bodies E from flowing out are so arranged that the fine non-woven fabrics I2 and J2 are parallel with a downward net body D and the cylindrical bodies E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to rivers, lakes, coasts,
Regarding the slopes of hillsides, valleys, etc. (herein, simply referred to as “rivers, etc.”) and structures such as seawalls (herein, simply referred to as “slope structures”).
In particular, it relates to a slope structure for the purpose of preserving the natural environment.

[0002]

2. Description of the Related Art Conventionally, when a slope such as a river is formed, concrete is poured or a concrete block is placed along the slope to protect the slope. However, with the recent trend of preserving the natural environment, the method of using the above-mentioned conventional concrete is being reviewed, and the development of a method suitable for the natural environment has been demanded.

[0003]

In response to the demand for preserving the natural environment, a hollow concrete block in which a filler such as crushed stone can be filled has been proposed and put into practical use. I have.

However, since this block is made of concrete and is heavy and difficult to handle, not only is the workability at the time of construction inferior, but also the interior space is formed too large due to the strength required for the block. Therefore, the amount of filler that can be filled into the block is limited, and the purpose of preserving the natural environment by maintaining water permeability has not been completely achieved.

[0005] By the way, the inventor of the present invention has previously proposed a conventional method of placing the above concrete or installing a concrete block, or a hollow concrete material which can be filled with a filler such as crushed stone. In consideration of the problems of the block, the amount of filler to be filled by forming a large internal space is increased, thereby maintaining good water permeability and preserving the natural environment, and improving workability during construction. A steel tubular body with a large number of through-holes formed in the peripheral wall, which is high in cost and has no restrictions on the size of the filler, etc., and can reduce the construction cost of the slope including the material transportation cost. And connecting the adjacent tubular bodies to each other, and filling the inside of the tubular body with a filler such as crushed stones (1997 Patent Application No. 99746).

In this slope structure, the required strength can be easily obtained only by laying a steel tubular body having a large number of through holes in the peripheral wall on the slope and adjusting the thickness of the steel material used. It is possible to form a large internal space and increase the amount of filler to be filled, thereby maintaining good water permeability and preserving the natural environment. Compared with concrete blocks, it is lighter in weight, easier to handle, and easier to connect adjacent tubular bodies, making it easier to build and forming on the peripheral wall. By merely adjusting the size of the through hole, it is possible to cope with various types of fillers, and to achieve a remarkable effect that the construction cost of the slope including the transportation cost of the material can be reduced.

[0007] By the way, as described above, since the cylindrical structure made of expanded metal made of steel, for example, stainless steel, having a large number of through holes in the peripheral wall is used in this slope structure, as described above, In view of the strength, water permeability, etc., it is difficult to set the size of the through-hole formed in the peripheral wall to be extremely small.Therefore, there are some restrictions on the size of the filler to be filled therein, There is no problem when using crushed stone with good quality particle size as the filler, but for example, if the remaining soil generated during construction on site is used as it is, with the passage of time, rainwater or running water, etc. There is a problem that the filler filled inside flows out.

In order to cope with this, it is conceivable to dispose a fine non-woven fabric made of long fibers of polypropylene or polyester along the peripheral wall of the cylindrical body, but it is not sufficiently supported by the peripheral wall. When pressure due to the filler is partially applied to the nonwoven fabric, the risk that the nonwoven fabric in the portion where the pressure is applied is torn and the filler filled inside flows out of the portion cannot be completely eliminated.

The present invention has been made in view of the above-mentioned problems of the slope structure in which a steel tubular body is used, and increases the amount of filler to be filled by forming a large internal space. While maintaining good water permeability and preserving the natural environment, the workability during construction is high, and there is no restriction on the size of the filler, etc., and the remaining soil generated during construction on site is used as it is It is an object of the present invention to provide a slope structure capable of reducing the construction cost of the slope including the transportation cost of the material.

[0010]

In order to achieve the above object, a slope structure according to the present invention comprises a metal member formed of a metal material having a large number of through-holes, such as an expanded metal or a wire mesh. In a slope structure in which a filler such as crushed stone is filled inside the metal member, a rough surface made of coconut fiber or the like is used so that the filler filled inside the metal member does not flow out. A nonwoven fabric layer obtained by laminating a nonwoven fabric of the eye and a fine nonwoven fabric made of polypropylene, polyester long fiber, or the like is disposed so that the fine nonwoven fabric is arranged along the metal member.

In this slope structure, a metal member formed of a metal material having a large number of through holes, such as expanded metal or wire mesh, is laid on the slope and the inside of the metal member is filled with crushed stone or the like. In a slope structure that is filled with a material, a nonwoven fabric layer obtained by laminating a coarse nonwoven fabric made of coconut fibers and the like and a fine nonwoven fabric made of long fibers of polypropylene or polyester is used. Since it is arranged along the metal member, the internal space of the metal member is formed to be large to increase the amount of the filler to be filled,
As a result, natural environment can be preserved while maintaining good water permeability. In addition, the metal member formed of the metal material has a smaller weight and is easier to handle than the concrete block, and the connection operation between adjacent metal members can be easily performed. Therefore, even if the workability at the time of construction is high and the non-woven fabric layer disposed along the metal member is used as it is, the non-woven fabric layer is broken even if the remaining soil generated during construction on site is used as it is. It is possible to prevent the loss of filler due to
The construction cost of the slope including the transportation cost of the material can be reduced.
Further, since the nonwoven fabric layer is formed by laminating a coarse-grained nonwoven fabric made of coconut fibers and the like and a fine-grained nonwoven fabric made of long fibers of polypropylene or polyester, the coarse-grained nonwoven fabric made of coconut fibers or the like is formed. By the buffering action, it is possible to prevent breakage of the fine non-woven fabric made of long fibers of polypropylene or polyester, whereby the required strength can be easily obtained, and it is made of long fibers of polypropylene or polyester. The fine-grained non-woven fabric can reliably prevent the filler from spilling out even if the filler, such as small-sized pebbles such as residual soil generated at the time of construction and sand, is used as it is. it can. Furthermore, by using the remaining soil generated during construction on site as it is, the growth conditions of the plants are better than crushed stones, and vegetation can be easily applied, and the filler by rainwater or running water etc. In addition to the fact that the outflow of water can be reliably prevented, greening can be easily achieved even on an inclined surface or the like.

[0012] In this case, the thickness of the nonwoven fabric layer provided on the peripheral surface of the metal member can be reduced to approximately の of the thickness of the nonwoven fabric layer provided on the bottom surface.

Accordingly, the nonwoven fabric layer disposed on the peripheral surface of the metal member where the nonwoven fabric layer becomes substantially double due to the adjacent metal member, and the bottom surface of the metal member to which the load of the filler is applied The non-woven fabric layer provided in the metal member can be kept in a balanced state, and it is possible to surely prevent the filler filled in the metal member from flowing out while ensuring the water permeability.

A nonwoven fabric layer made of a coarse nonwoven fabric made of coconut fiber or the like or another nonwoven fabric common to an adjacent metal member is disposed on the metal member. A lid made of a metal material having a large number of through holes such as a metal and a wire net can be provided, and the lid can be fixed by an anchor that is cast at appropriate intervals.

[0015] Thus, the work of laying the nonwoven fabric layer disposed on the metal member and the lid made of the metal material can be performed efficiently, and the lid and the nonwoven fabric layer are securely fixed. be able to.

Further, the metal member is constituted by a cylindrical body having a regular hexagonal planar shape, and the cylindrical members are combined to form a unit structure having a substantially rectangular planar shape. Filling with filler such as pebbles with small particle size such as residual soil, sand, etc., and crushed stone can be filled inside irregular shaped parts whose planar shape formed on the periphery of the unit structure is not a regular hexagon .

This improves the rigidity of the unit structure and stabilizes the laying state. In particular, crushed stones are filled in the inside of the irregular portion having a planar shape other than a regular hexagon formed on the periphery of the unit structure. By doing so, the pressure of the filler applied to the peripheral portion of the unit structure can be made uniform, and the unit structure can be prevented from collapsing.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a slope structure according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show an embodiment in which the seawall structure of the present invention is applied to seawall protection of a river.

As shown in FIGS. 1 and 2, the revetment structure is a net D made of expanded metal such as stainless steel or aluminum, which is laid on a revetment including a slope A and a top end B and a basin C. A cylindrical body E made of an expanded metal such as stainless steel or aluminum is connected and laid, and a filler F such as crushed stone is filled inside the cylindrical body E. A net G formed by knitting a metal wire made of stainless steel, aluminum, or the like is laid, and a lower net D and a cylindrical body E are spirally formed with a metal, such as stainless steel or aluminum. It is designed to be integrated using an arbitrary connecting member made of a wire or the like. The expanded metal is not particularly limited, but has a thickness of several mm to 10 mm depending on the use environment, required strength, and the like.
A large number of cuts are made in a metal plate material such as stainless steel, aluminum, or the like, and this is stretched to form a large number of through holes.

In this case, the lower and upper nets D and G, the cylindrical body E, and the connecting member are made of stainless steel, so that a rust-resistant and durable seawall structure can be obtained. Becomes

Further, as shown in Table 1, by using a metal wire 18 formed in a spiral shape as a connecting tool, the lower and upper nets D and G and the cylindrical body E can be easily connected on site. It can be connected and integrated. In addition, as the connecting tool, in addition to the metal wire 18 formed in a spiral shape, any connecting tool such as a wire formed in a ring shape, a bolt and a nut can be used.

[0023]

[Table 1]

By the way, in the present embodiment, the lower net D is formed as shown in FIGS.
And the bottom nets 4, 5, and 6 laid on the top end portion B and the bottom portion C, respectively.
The bottom nets 5, 6 laid on the top end B and the bottom C, respectively, are bent at their ends to form upright edges 5a, 6a. And the bottom net 4, which constitutes the lower net D,
5, 6 are laid on the sloped surface A, the top end B, and the sagging portion C, respectively, and then fixed with an anchor or the like, and a metal wire or the like in which the bottom nets 4, 5, 6 are spirally formed. Integrate using an arbitrary connecting tool.

As shown in FIGS. 2 and 4 and Table 1, the cylindrical body E has a frame network 1 formed by dividing a regular hexagon into two equal parts at opposing vertices, A frame network 2 formed into a shape obtained by bisecting a pentagon, and a capturing frame network 3
And the wall nets 7, 8, 9 having a planar shape in a straight line. And these nets 1, 2, 3, 7,
8 and 9 are appropriately combined, for example, as shown in FIG.
As a whole, the cylindrical body E was formed into a part having a regular hexagonal shape and a pentagonal shape by integrating by using the connecting tool 18 made of a spirally formed metal wire. And the boundary between the slope portion A, which is an inclined portion, and the top end portion B, which is a horizontal portion, and the sag portion C, are straight lines as viewed in plan by the frame nets 1, 2 of the cylindrical body E. The unit structure X is combined with the cylindrical body E to form the unit structure X having a substantially rectangular planar shape.

As shown in FIG. 7, the cylindrical body E is formed by combining, for example, a shape obtained by dividing a regular hexagon into two equal vertexes at opposing vertices. In addition to being self-sufficient, it can be superimposed during transportation, making it easy to handle, and coupled with easy connection,
The workability at the time of construction is high, and the construction cost of the revetment including the transportation cost of materials can be reduced.

As shown in FIGS. 2 and 5 and Table 1, the upper net body G is connected to the slope portion A, the top end portion B, and the sag portion C so as to be common to the adjacent cylindrical bodies E. It is constituted by a net body 10 laid across. In this case, bone lines 11, 12, 13, 14, 15 made of a metal wire are inserted into the upper net body G along the upper end edge of the cylindrical body E,
By connecting the bone lines 11, 12, 13, 14, 15 and the tubular body E using a connecting tool made of a spirally formed metal wire, the upper net body G and the tubular body E are connected. Although it may be integrated, for example, as in a modified example shown in FIG. 8, it is laid over the slope portion A, the top end portion B, and the sag portion C so as to be common to the adjacent cylindrical bodies E. A nonwoven fabric layer H made of a coarse-grained nonwoven fabric or other nonwoven fabric made of coconut fiber or the like, and an upper net G serving as a lid is placed on the nonwoven fabric H, and the net G is directly or It can be fixed by an anchor L which is laid at appropriate intervals through a bone line made of a metal wire inserted through the net body G. In this embodiment, although not particularly limited, the nonwoven fabric layer H
Is made of a coarse nonwoven fabric made of palm fiber having a thickness of about 5 to 20 mm. In this manner, the work of laying the nonwoven fabric layer H disposed on the cylindrical body E and the upper net body G further disposed thereon can be efficiently performed, and the upper net body G can be efficiently laid. In addition, the nonwoven fabric layer H can be securely fixed.

Further, in order to maintain the shape of the cylindrical body E, reinforcing wires 16 and 17 made of a metal wire are stretched between the upper end edges of the cylindrical body E as necessary.

The filler F to be filled into the cylindrical body E includes:
Although it is desirable to use crushed stone, the filler F to be filled is
It can be arbitrarily selected according to the condition of the slope, riverbed, etc., and other incidental requirements. A through hole (mesh) formed in the mesh of the lower net D or the peripheral wall of the cylindrical body E, for example, by directly using the remaining soil generated during construction on site for the filler F.
When a filler such as pebbles or sand having a smaller particle size is used, as shown in FIG. 9, the nonwoven fabric layers I and J are moved downward so that the filled filler F does not flow out or move. Are arranged along the net D and the cylindrical body E.

The nonwoven fabric layers I and J are composed of coarse nonwoven fabrics I1 and J1 made of natural fibers such as coconut fibers, and a few to 30 denier, preferably 3 to 15 denier polypropylene or polyester long fiber. Using a laminate of fine-grain nonwoven fabrics I2 and J2 made of synthetic fibers, the fine-grained nonwoven fabrics I2 and J2 are the lower net D and cylindrical body E
So that it is arranged along the line. Thereby, by the buffering action of the coarse-grained nonwoven fabrics I1 and J1 made of palm fibers and the like, the fine-grained nonwoven fabrics I2 and J2 made of long fibers of polypropylene and polyester are prevented from being broken,
In this way, the required strength can be easily obtained, and the fine-grain nonwoven fabrics I2 and J2 made of polypropylene, polyester long fiber, etc., cause the fine-grained small-sized pebbles generated during construction on site. Even if the material containing filler such as sand is used as it is,
The flowing out of the filler F can be reliably prevented. Furthermore, by using the remaining soil generated during construction on site as it is as the filler F, plant growth conditions are better than crushed stone, and vegetation can be easily applied.
In addition to being able to reliably prevent the outflow and movement of the filler F due to rainwater, running water, or the like, greening can be easily achieved even on an inclined surface or the like.

In this case, the thickness of the nonwoven fabric layer J disposed along the cylindrical body E is set to be approximately １ ／ of the thickness of the nonwoven fabric layer I disposed along the lower net D. Preferably, the non-woven fabric layer J disposed on the peripheral surface of the cylindrical body E in which the non-woven fabric layer J becomes substantially double due to the adjacent cylindrical body E, and the lower portion where the load of the filler F is applied Net D
The nonwoven fabric layer I disposed along the line can be in a well-balanced state, and while the water permeability is ensured, the flow of the filler F filled inside the tubular body E is reliably prevented from flowing out. can do. In the present embodiment, although not particularly limited, the nonwoven fabric layer I provided along the lower net D is made of a coarse nonwoven fabric I1 made of coconut fiber having a thickness of about 10 to 30 mm. And thickness 5-10mm
A nonwoven fabric layer J2 composed of fine-grained nonwoven fabric I2 made of synthetic fibers such as long fibers of polypropylene or polyester, and a nonwoven fabric layer J arranged along the cylindrical body E.
Is composed of a coarse non-woven fabric J1 composed of palm fibers having a thickness of about 5 to 10 mm and a fine non-woven fabric J2 composed of synthetic fibers such as polypropylene and polyester long fibers having a thickness of about 3 to 5 mm. I have to.

It should be noted that a lower net D is provided on the bottom of the cylindrical body E.
Nonwoven Fabric I Constituting Nonwoven Fabric Layer I Arranged Along
As shown in FIG. 10, 1 and I2 are used by cutting one strip-shaped nonwoven fabric alternately into trapezoids having different directions, so that no material is lost.

By the way, through holes (mesh) formed in the mesh of the lower net D or the peripheral wall of the tubular body E, such as using the remaining soil generated during construction on site as the filler F as described above, In the case of using a filler such as pebbles or sand having a smaller particle size than that of (1), as shown in FIG. 1, a cylindrical structure E is combined to form a unit structure X having a substantially rectangular planar shape. A cylindrical body E having a regular hexagonal shape is filled with a filler such as pebbles and sand having a small particle diameter such as residual soil inside a cylindrical body E having a regular hexagonal shape. It is desirable to fill crushed stone having a large particle diameter into the fixed portion, specifically, the inside of the triangular portion E1 having a planar shape. As a result, the rigidity of the unit structure X is improved, and the laying state is stable. In particular, the planar shape formed on the peripheral edge of the unit structure X has a large particle size inside the irregular portion E1 other than a regular hexagon. By filling the crushed stone, the pressure of the filler F applied to the peripheral portion of the unit structure X can be made uniform, and the unit structure X can be prevented from collapsing.

In addition, as the filler F, in addition to the above, for example, when purifying river water, the purification material such as crushed stone and charcoal is filled into the cylindrical body E in a layered or mixed state. You can make it. When using charcoal as a purifying material, for example, the cost can be reduced by using thinning material or waste material as a raw material.

Further, a vegetation mat layer made of natural fibers or synthetic resin fibers can be formed on the upper surface of the filler F filled in the cylindrical body E. The vegetation mat layer is used to maintain a suitable amount of water for the plants vegetating in the cylindrical body E and to prevent the outflow or movement of the filler F due to rainwater or the like. The vegetation mat layer is provided with an upper net G as a cover. In this case, before disposing the vegetation mat layer, it is possible to sow plant seeds or to dispose a vegetation mat layer containing plant seeds. In particular,
By using a vegetation mat layer containing plant seeds, greening can be easily achieved.

In the above embodiment, the lower net D is laid directly on the revetment including the slope portion A and the top end portion B and the sag portion C.
On the top end portion B and the sagging portion C, a coarse-grained nonwoven fabric made of a natural fiber such as coconut fiber and a fine-grained nonwoven fabric made of a synthetic fiber such as a long fiber of polypropylene or polyester on the nonwoven fabric layer I described above. Can be laid so that the fine-grained nonwoven fabric is positioned above, then fixed with an anchor or the like, and the net body D can be laid thereon. By doing so, the function of preventing the movement of the filler F is slightly reduced, but the work of laying the nonwoven fabric layer can be performed efficiently.

Although the example in which the revetment structure of the present invention is applied to the revetment of a river has been described above, the target of the revetment structure of the present invention is not limited to the revetment of a river, but may be a lake, a shore, a mountain face, a valley, or the like. Revetment, slopes (including shallow riverbeds, lakebeds, and seafloor structures; in this case, water purification structures).
More specifically, the present invention can be widely applied to this type of civil engineering structure, such as a dam shown in FIG. 11, a valley shown in FIG. 12, a retaining wall, a retaining wall shown in FIGS. 13 and 14, and even in these cases. Vegetation can be applied if necessary.

The planar shape of the cylindrical body E is not limited to a regular hexagon, but may be any shape such as a rectangle (for example, see Japanese Patent Application No. 11-308076) as proposed by the present applicant. In the concrete structure, the structure of the above embodiment, for example, as the filler F, the remaining soil generated at the time of construction on site is used as it is, When a filler such as pebbles or sand having a smaller particle size than the through-holes (mesh) formed in the peripheral wall of the cylindrical body E is used, the filled filler F may flow out as shown in FIG. The nonwoven fabric layers I and J may be appropriately arranged along the lower net D and the cylindrical body E so as not to move.

[0039]

According to the slope structure of the present invention, a metal member formed of a metal material having a large number of through holes, such as expanded metal or wire mesh, is laid on the slope, and the metal member In a slope structure in which a filler such as crushed stone is filled inside, a nonwoven fabric layer obtained by laminating a coarse nonwoven fabric made of palm fiber or the like and a fine nonwoven fabric made of polypropylene or polyester long fiber, Because the fine-grained nonwoven fabric is disposed along the metal member, the internal space of the metal member is formed to be large, and the amount of filler to be filled is increased, thereby improving good water permeability. It is possible to preserve a rich natural environment where underwater creatures such as fish and insects can easily live. In addition, the metal member formed of the metal material has a smaller weight and is easier to handle than the concrete block, and the connection operation between adjacent metal members can be easily performed. The workability at the time of construction is high, and the non-woven fabric layer arranged along with the metal member allows the filler to be filled with small-size particles such as residual stones generated during construction on site, such as pebbles and sand. Even if it is used as it is, the flowing out of the filler can be reliably prevented, and the construction cost of the slope including the transportation cost of the material can be reduced. Further, since the nonwoven fabric layer is formed by laminating a coarse-grained nonwoven fabric made of coconut fibers and the like and a fine-grained nonwoven fabric made of long fibers of polypropylene or polyester, the coarse-grained nonwoven fabric made of coconut fibers or the like is formed. By the buffering action, it is possible to prevent breakage of the fine non-woven fabric made of long fibers of polypropylene or polyester, whereby the required strength can be easily obtained, and it is made of long fibers of polypropylene or polyester. The fine-grained non-woven fabric ensures that the filler does not run off even when the material containing the fine-grained pebbles, sand, etc., which is generated during construction on site, is used as it is. can do. Furthermore, by using the remaining soil generated during construction on site as it is, the growth conditions of the plants are better than crushed stones, and vegetation can be easily applied, and the filler by rainwater or running water etc. In addition to the fact that the outflow of water can be reliably prevented, greening can be easily achieved even on an inclined surface or the like.

Further, the thickness of the nonwoven fabric layer provided on the peripheral surface of the metal member is set to approximately １ ／ of the thickness of the nonwoven fabric layer provided on the bottom surface.
By the metal member being adjacent, the nonwoven fabric layer disposed on the peripheral surface of the metal member where the nonwoven fabric layer is substantially doubled, and the bottom surface of the metal member to which the load of the filler is applied The non-woven fabric layer to be disposed can be in a balanced state, and it is possible to reliably prevent the filler filled in the metal member from flowing out while ensuring the water permeability.

Further, a nonwoven fabric layer made of a coarse-grained nonwoven fabric made of palm fiber or the like or another nonwoven fabric common to an adjacent metal member is disposed on the metal member, and the expanded layer is placed on the nonwoven fabric layer. By disposing a cover made of a metal material having a large number of through holes such as metal and wire mesh, and fixing the cover with an anchor that is cast at appropriate intervals, the cover is disposed on the metal member. The work of laying the nonwoven fabric layer and the lid formed of the metal material can be efficiently performed, and the lid and the nonwoven fabric layer can be securely fixed.

Further, the metal member is constituted by a cylindrical body having a regular hexagonal planar shape, and the tubular members are combined to form a unit structure having a substantially rectangular planar shape. By filling the inside with a filler such as pebbles of small particle size such as residual soil, sand, etc., and filling the inside of the irregular shape part other than a regular hexagon with a planar shape formed on the periphery of the unit structure, The rigidity of the unit structure is improved, and the laying state is stable.In particular, the crushed stone is filled inside the irregular portion other than the regular hexagon in the planar shape formed on the peripheral portion of the unit structure, so that the unit structure is improved. The pressure of the filler applied to the peripheral portion of the body can be made uniform to prevent the unit structure from collapsing.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing one embodiment in which a seawall structure of the present invention is applied to seawall protection of a river.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a plan view showing a state where a lower net is laid.

FIG. 4 is a plan view showing a laid state of a tubular body.

FIG. 5 is a plan view showing a state in which an upper net is laid.

FIG. 6 is an explanatory diagram showing an example of a combination of frame networks.

7A and 7B show an example of a frame net, wherein FIG. 7A is a plan view, FIG. 7B is a front view, and FIG.

FIG. 8 is an exploded perspective view showing a modification in which the seawall structure of the present invention is applied to seawall of a river.

FIG. 9 is an explanatory view showing the internal structure of a tubular body.

10A and 10B show a cutting method of a nonwoven fabric layer provided on the bottom of a tubular body, FIG. 10A is an explanatory diagram of the cutting method, and FIG. 10B shows a state where the nonwoven fabric layer is provided on the bottom of the tubular body. It is a top view.

11A and 11B show an embodiment in which the slope structure of the present invention is applied to a bank, wherein FIG. 11A is a front view and FIG. 11B is a side view.

FIGS. 12A and 12B show an embodiment in which the slope structure of the present invention is applied to a valley, where FIG. 12A is a front view and FIG. 12B is a side view.

FIG. 13 shows an embodiment in which the slope structure of the present invention is applied to a retaining wall and a retaining wall, (a) is a plan view, and (b) is a side view.

14A and 14B show an embodiment in which the slope structure of the present invention is applied to a retaining wall and a retaining wall, wherein FIG. 14A is a plan view and FIG. 14B is a side view.

[Explanation of symbols]

 A slope part B top end part C sagging part D lower net E cylindrical body F filler G upper net H nonwoven fabric layer I, J nonwoven fabric layer I1, J1 coarse nonwoven fabric I2, J2 fine nonwoven fabric K1 , K2 boundary L anchor X unit structure 1-3 frame net 4-6 bottom net 7-9 wall net 10 lid 11-15 bone line 16,17 reinforcement line 18 connecting tool

Claims (4)

[Claims] 1. A metal member formed of a metal material having a large number of through holes, such as an expanded metal or a wire mesh, is laid on a slope, and a filler such as crushed stone is filled inside the metal member. In such a slope structure, a coarse-grained nonwoven fabric made of palm fibers and the like, and a fine-grained nonwoven fabric made of long fibers of polypropylene and polyester so that the filler filled into the metal member does not flow out. A non-woven fabric layer comprising a nonwoven fabric layer and a nonwoven fabric layer arranged on a metal member. 2. The method according to claim 1, wherein the thickness of the nonwoven fabric layer provided on the peripheral surface of the metal member is set to approximately half the thickness of the nonwoven fabric layer provided on the bottom surface. Surface structure. 3. A nonwoven fabric layer made of a coarse-grained nonwoven fabric made of palm fiber or the like or another nonwoven fabric common to an adjacent metal member is provided on the metal member, and on the nonwoven fabric layer,
A cover body formed of a metal material having a large number of through-holes, such as expanded metal and a wire net, is provided, and the cover body is fixed by anchors that are cast at appropriate intervals. 4. The slope structure according to 2 or 3. 4. A metal member comprising a cylindrical body having a regular hexagonal planar shape, and combining the cylindrical bodies to form a unit structure having a substantially rectangular planar shape. Filling material such as pebbles with small particle size such as residual soil, sand, etc., and crushed stone inside the irregular shaped part other than a regular hexagon formed on the periphery of the unit structure The slope structure according to claim 1, 2 or 3, wherein