JP2002309582A - Protective structure for face of slope, wall face, waterside face or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent distortion of a slope by preventing an entire grid fence from being moved to the front side by earth pressure or only a frontal wall part from falling to the front side and being deformed, and by stabilizing a filler so that it will not move. SOLUTION: This protective structure is constructed of a plurality of steps piled up from bottom to top, with each step consisting of a grid fence 5 installed in front of a face of slope 1 of bedrock and banking 9 packed between the fence 5 and the face of slope 1, with the fence comprising an, inclined frontal wall part 6 formed of steel grills and a horizontal bottom wall part 7. A reinforcing sheet 3 extending toward the face of slope 1 of the bedrock is connected to the mid-height portion of the frontal wall part 6 except its upper and lower ends.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection structure for slopes, walls, shores, and the like.

[0002]

2. Description of the Related Art Rock slopes, concrete / mortar spray slopes, walls of concrete structures such as retaining walls and dams, etc.
Because there are many problems on landscape conservation, introduction of protection and greening by vegetation is considered. Japanese Patent Application Laid-Open No. Hei 4-213625 discloses that a grid frame fence composed of an inclined front wall and a horizontal bottom wall made of a reinforced grid is installed in front of a slope, and a grid frame fence is provided below the bottom wall of the grid frame fence. Laying the reinforcement sheet almost flat from to the slope, and laying a greening sheet on the back surface of the front wall of the lattice frame fence and the top surface of the bottom wall, and filling material between the lattice frame fence and the slope. A protective structure for a slope, which is constructed in a plurality of steps by filling an embankment material as above and repeating these steps from bottom to top, is disclosed. This protective structure can be constructed even on steep slopes, and has excellent points such as good construction efficiency. Especially the reinforced sheet
It spreads in the embankment material beyond the bottom wall, mooring the lattice frame fence to the embankment material, and has the effect of stabilizing the embankment material. For this reason, the bottom wall can be shortened, and the transportation of the lattice frame fence becomes easy.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to prevent the entire grid frame fence from moving forward due to earth pressure, or to prevent the front wall only from falling forward and deforming. It is an object of the present invention to provide a protection structure for a slope, a wall surface, a shore surface, and the like, which can stabilize the road so as not to move and prevent distortion of a slope.

[0004]

In order to achieve the above-mentioned object, a protection structure for a slope, a wall surface, a quay surface, etc. of the present invention comprises a front wall made of a reinforcing steel grid and a horizontal bottom wall. The slope
A lattice fence installed in front of the surface to be protected, such as a wall or shore, and an embankment material filled between the lattice fence and the surface to be protected;
One step is composed of fillers such as rocks, and the slope is constructed in multiple steps by stacking the steps from bottom to top,
In a protection structure such as a wall surface or a shore surface, a reinforcing sheet extending toward a protection target surface is connected to an intermediate height portion (excluding upper and lower ends) of the front wall portion.

[0005] Here, the surface to be protected is not particularly limited.
The following can be exemplified. (A1) Slope: Rock slope, concrete / mortar spray slope, cut slope, embankment slope, etc. can be exemplified. (A2) Wall surface: A wall surface of a concrete structure such as a retaining wall or a dam can be exemplified. (A3) Shore surface: A shore surface such as a river or an artificial canal, a waterway, a pond, a lake, etc. can be exemplified, and the condition of the shore surface may be a local ground or an already built concrete revetment. The angle of inclination of the surface to be protected with respect to the horizontal is not particularly limited.

The filler is not particularly limited, but the following can be exemplified. (B1) Kuriishi: The size of kuriishi is not particularly limited, and includes large crushed rocks to gravel of about 2 to 75 mm. (B2) Embankment material: The embankment material may be only soil, but may be soil mixed with rock, or further mixed with clinker ash, fly ash, asphalt waste, and the like. The embankment material is preferably soil at the construction site, but may be soil carried from another place. (B3) Filling material consisting of rubble stone filled near the lattice frame fence and embankment filled near the surface to be protected.

[0007] It is preferable that vegetation soil is mixed with the chestnut stone of (B1) or (B3). This is to make the mixed layer of Kuriishi and vegetation soil work as a vegetation base. Examples of a method of forming the mixed layer of the rubble stone and the vegetation soil include a method of pouring the vegetation soil in a slurry state into the rubble stone, a method of watering, and the like. The soil of the vegetation soil is not particularly limited.

The reinforcing sheet has a function of stabilizing the filler and the lattice frame fence, and is not particularly limited, and examples thereof include the following. (C1) Geotextiles made of fiber material; Geotextiles such as knitted fabrics, woven fabrics, and nonwoven fabrics; reinforced geotextiles obtained by arranging and entangled strands in parallel on a nonwoven fabric; combinations thereof; Strong nonwoven fabric or the reinforced geotextile. (C2) Geotextile-related products made of non-fiber materials;
A geonet formed by fusing the extruded resin strands in a mesh form, a geogrid formed by stretching a perforated resin sheet, a geomembrane, etc. can be exemplified, preferably,
This is a geogrid whose strength is increased by stretch molding. Geogrids include uniaxial stretching and biaxial stretching.

[0009] The reinforcing sheet is connected to the intermediate height portion (excluding the upper and lower ends) of the front wall portion when the front wall portion receives the earth pressure from behind, and the center of the earth pressure (force of the force). This is because the part near the center of gravity is a part near the center of gravity, although the direction is different, so pulling the front wall at that part suppresses the generation of rotational force on the grid frame fence, and the front wall part This is to prevent only the front side from falling and deforming.

[0010] The intermediate height of the front wall is not particularly limited, but is, as shown in FIG. 6A, 1/5 to 4/5 of the total height of the front wall (6). Preferably, FIG.
As shown in (b), 1/3 to 3 / of the total height of the front wall (6).
More preferably at a height of 4. When the height is lower than １ ／ of the total height of the front wall, the rotational force (upward direction) and the effect of suppressing the falling deformation are reduced, and the total height of the front wall is reduced to 4%.
If the height is higher than / 5, the effect of suppressing the rotational force (downward direction) is reduced.

The mode or member for connecting the reinforcing sheet to the intermediate height portion of the front wall is not particularly limited, but the following can be exemplified. (D1) A mode in which a ring, a clip, a carabiner or the like hung on a reinforcing bar constituting an intermediate height portion of the front wall portion is stopped by passing through a reinforcing sheet. (D2) Various types of locks, holdings, large staples, and reinforcing bars that form the intermediate height of the front wall
A mode of hooking with an S-shaped hook, a C-shaped hook, or the like. (D3) A mode in which a reinforcing bar and a reinforcing sheet constituting an intermediate height portion of the front wall are joined with a wire, a strap, a band, a wire (wire), a hard steel wire, a piano wire, or the like. (D4) A mode in which the front end portion of the reinforcing sheet is directly wound around the reinforcing bar constituting the intermediate height portion of the front wall portion and folded, and the folded portion is stitched or stopped by the above-described connecting members D1 to D3. The suturing can be performed on site using, for example, a portable suturing machine (handy sewing machine).

It is preferable to attach a rigid body extending in the width direction to the front end of the reinforcing sheet. Examples of the rigid body include, but are not particularly limited to, solid rods and hollow pipes, whose cross-sectional shapes are circular, polygons such as triangles and rectangles, stars,
H-shape, T-shape, U-shape and the like can be exemplified. The material of the rigid body is not particularly limited, and examples thereof include wood, resin, concrete, and metal. When using wood as the material, it is preferable to use thinned wood or the like cut near the construction site from the viewpoint of effective use of resources, but thinned wood or the like brought from another place may be used.

The mode of attaching the rigid body to the reinforcing sheet is not particularly limited, but the following can be exemplified. (E1) A mode in which the front end of the reinforcing sheet is folded and covered with a rigid body. Alternatively, a rigid body is passed through a space formed by folding and sewing the front end of the reinforcing sheet. Suturing can be performed in advance at a factory or the like, or can be performed at a site using a portable suturing machine, for example. (E2) A mode in which the reinforced sheet of (E1) is further folded back together with the rigid body. (E3) An aspect in which in (E1) or (E2), another rigid body is provided near the folded and multiplexed portion of the reinforced sheet in the direction of the rigid body. (E4) An embodiment in which a reinforced sheet is wound around the rigid body. (E5) An embodiment in which a plurality of notches with closed ends are formed in parallel in the reinforcing sheet, and a rigid body is inserted through the plurality of notches. When the strength of the reinforced sheet is insufficient, the reinforced sheet may be folded to form a double portion, and a cut may be formed in the double portion. (E6) A mode in which the reinforced sheet of (E5) is folded back together with the rigid body. (E7) A mode in which the members are engaged by a locking member such as a pile or a nail.

When the rigid body extending in the width direction is attached to the front end portion of the reinforcing sheet as described above, the reinforcing bar constituting the intermediate height portion of the front wall portion and the reinforcing sheet extending beyond the rigid body to the rear are provided. Are preferably connected by a connecting member. The mode and member of this connection are not particularly limited.
D1 to D4 can be exemplified.

The reinforcing sheet is preferably locked to the filler by a locking member such as a pile. In addition, the rear end of the reinforcing sheet can be fixed to the surface to be protected. In this case, the reinforcing sheet has an effect of strongly connecting the lattice fence to the surface to be protected. Although the fixing means is not particularly limited, a mode in which the fixing means is fixed to an anchor or the like attached to the surface to be protected can be exemplified. The shape and length of the anchor can be appropriately determined according to the surface to be protected.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS << First Embodiment >> FIGS. 1 to 3 show a protective greening structure for a rock slope according to a first embodiment of the present invention. The protective greening structure is constructed by the following steps. I have. The rock slope 1 is, for example, a steep slope of about 60 degrees.

[Installation Step of Grid Frame Fence] A required number of grid frame fences 5 are installed side by side on a site 2 in front of the lower end of the rock slope 1. Note that the reinforcing sheet 3 'may or may not be laid under the lattice frame fence 5. 10 'is a rigid body similar to the rigid body 10 described later, but may be omitted. As shown in FIGS. 1 and 2, the grid frame fence 5 includes an inclined front wall portion 6 and a horizontal bottom wall portion 7. As an example of a manufacturing method, a reinforcing bar is welded in a vertical and horizontal grid shape (specifically, as shown in FIG. Is formed by bending a reinforcing bar lattice formed by arc welding at its center. The upper end of the front wall 6 and the rear end of the bottom wall 7 may be connected by a connecting rod with a hook or the like. The distance between the front wall portion 6 of the lattice frame fence 5 and the rock slope 1 is not particularly limited, and is, for example, about 1 m to 10 m in the present embodiment.

The dimensions and the like of the lattice frame fence 5 used in the present embodiment are as follows, but are merely examples, and these dimensions and the like are appropriately changed depending on the construction site. Angle of inclination of front wall 6 with bottom wall 7: about 60 degrees Length of inclination of front wall 6: about 600 mm Depth of bottom wall 7: about 600 mm Left and right length of front wall 6 and bottom wall 7: about 2600mm Diameter of reinforcing bar: about 10mm Grid pitch of reinforcing bar grid: 100 to 300mm

[Greening sheet laying process] FIGS. 1 and 2
As shown in the figure, the rear surface of the front wall 6 of the grid frame fence 5 and the bottom wall 7
A slightly rougher greening sheet 8 is laid on the upper surface of the sheet. It is preferable that the upper end of the greening sheet 8 be slightly left behind and temporarily suspended on the front surface of the front wall portion 6 (not shown). Greening sheet 8
Is not limited to a specific material, and examples thereof include a woven fabric and a nonwoven fabric.

[First half process of filling the embankment material] Between the rear surface of the front wall portion 6 of the grid frame fence 5 and the rock slope 1, the embankment material 9 made of the soil at the construction site as the filling material is inserted into the front wall portion 6. 1 / of the total height of
Fill to an intermediate height position at a height of 2/3. This embankment material 9 is used as an impact roller, a vibrating roller, a tamper,
It is compacted by rolling with a tire roller, vibration compactor, construction machine, etc.

[Reinforcement Sheet Connecting Step] The reinforcement sheet 3 is laid from immediately before the rock slope 1 to immediately behind the front wall 6. For the reinforcing sheet 3 (and the reinforcing sheet 3 ′), for example, the following geotextiles and the following geotextile-related products can be used. As shown in FIGS. 1 to 3, a reinforced nonwoven fabric obtained by arranging and tangling a thick, high-strength nonwoven fabric or strand in parallel on the nonwoven fabric, as shown in FIG. Mesh woven or knitted fabric in which yarn is coated with resin As shown in FIG. 5 (b), a geogrid composed of vertical strands reinforced with aramid fibers and stretched horizontal strands As shown in FIG. 5 (c) , A polymer grid formed by uniaxially stretching a perforated resin net, a polymer grid formed by biaxially stretching a perforated resin net, and a geomembrane

At the time of this laying, the front end (the front wall 6 side) and the rear end (the rock slope 1 side) of the reinforcing sheet 3 are slightly left. Next, the rigid body 10 extending in the width direction is placed on the vicinity of the front end and the vicinity of the rear end of the reinforcing sheet 3. Rigid body 10
For example, a hollow pipe, a drainage pipe provided with a large number of through holes, a shape member, an iron round bar, and the like can be used in addition to the illustrated thinned wood. Next, as shown in FIG. 3A, the rigid body 10 is engaged with the reinforced sheet 3 by folding back the front end and the rear end of the reinforced sheet 3 and covering the rigid body 10. As the length of the folded portion of the reinforcing sheet 3 increases, the resistance to pulling out of the reinforcing sheet 3 can be increased. As shown in FIG. 3B, the second rigid body 10b is placed near the rigid body 10,
It is even better to sandwich the reinforcing sheet 3 between the rigid bodies.

The rear end of the reinforcing sheet 3 is as follows.
The rigid body 10 does not necessarily have to be engaged. in this case,
As shown in the middle part of FIG. 2, the reinforcing sheet 3 may be extended rearward, but the pile 15 or the like is driven into the reinforcing sheet 3 and the embankment material 9, and as shown in the upper part of FIG. It is preferable to couple to the rock slope 1 with the anchor 4 or the like.

Further, a pile 15 as a locking member extending in the height direction of the rock slope 1 is provided at a portion of the reinforcing sheet 3 which is doubled by being folded back at one or both of the front end side and the rear end side.
To prevent the rigid body 10 from coming off the reinforcing sheet 3 and to insert the reinforcing sheet 3 into the embankment material 9.
To lock. As shown in FIG. 3, instead of or in addition to driving of the pile, a double-folded portion may be sutured 14. In this case, the rigid body 10 may be passed through the space formed by the stitches 14. For example, when the stitching is performed on site using a portable suturing machine, the rigid body 10 is placed on the reinforcing sheet 3. Alternatively, a procedure may be adopted in which the reinforcing sheet 3 is folded and then sewn.

Further, the reinforcing bar at the intermediate height of the front wall 6
In the illustrated example, the front end of the reinforcing sheet 3 extending toward the rock slope 1 as viewed from the front wall 6 is connected to the horizontal reinforcing bar 6a but may be a vertical reinforcing bar. This connection can be performed, for example, in the following manner. As shown in FIG. 1 to FIG. 3, a reinforcing sheet 3 is provided in which a plurality of rings 11, clips, S-cans, carabiners, construction wires / number wires, and the like are hanged on important points of a horizontal reinforcing bar 6a and pass over a rigid body 10.
Stop through. In the case where the rigid body 10 is engaged, it is preferable that the reinforcing bar 6a and the reinforcing sheet 3 beyond the rigid body 10 be connected by a connecting member such as a ring 11. A hole 12 may be formed in the reinforcing sheet 3 as shown in FIG.

As shown in FIG. 3 (c), the reinforced sheet 3 is folded back to form a double stitch, and the front end of the reinforced sheet 3 is attached to the reinforced sheet 3 on site using, for example, a cutter knife or scissors. The longitudinal reinforcing bar 6b of the front wall 6 is inserted through the cut 13 and the rigid body 10 is passed through the space formed by the suture 14 in front of the front wall 6 so that the front wall 6 The reinforcement sheet 3 can also be connected to the vehicle. Also in this case, any of the same procedures as in the paragraph 0024 can be adopted.

As shown in FIG. 4A, the horizontal reinforcing bar 6 a
The reinforcing sheet 3 is connected to the connecting band 20 with a connecting band 20, a connecting clip, a connecting clamp, a wire, a construction wire / number wire, and the like. As shown in FIG. 4B, the horizontal reinforcing bar 6a and the reinforcing sheet 3 are hooked by a large staple 21 or the like. As shown in FIG. 4C, the horizontal reinforcing bar 6a and the reinforcing sheet 3 are hooked by the S-shaped hooks 22. As shown in FIG. 4D, the horizontal reinforcing bar 6a and the reinforcing sheet 3 are hooked by the pipe crank 23. As shown in FIG. 4E, the horizontal reinforcing bar 6a and the reinforcing sheet 3 are hooked by the carabiner 24.

In the illustrated example, 1/2 to 2 of the total height of the front wall 6 is shown.
The reinforcing sheet 3 is connected to the horizontal reinforcing bar 6a at an intermediate height portion at a height of / 3, but as described above, the preferable range shown in FIG. 6A and the more preferable range shown in FIG. It may be changed within the range.

[Second half process of filling with embankment material] Reinforced sheet 3
Between the front wall part 6 and the rock slope 1 on the ground, fill the embankment material 9 made of the soil at the construction site as a filler material to approximately the upper end of the front wall part 6, and fill this embankment material 9 with an impact roller or the like. Compress and compact. The remaining upper end of the greening sheet 8 is placed on the upper surface of the embankment material 9. The end of the uppermost reinforcing bar may be bent backward, and the upper end of the greening sheet 8 may be pressed. This forms the first stage.

[Plural-Step Repetition Step] The above-described steps of installing the lattice frame fence or the latter half of the step of filling the filling material are performed on the upper surface of the filling material 9 to form a second step. By repeating this operation from the bottom to the top as many as necessary, a desired plurality of stages can be constructed. Grid frame fence 5 at the top
Then, the upper end of the vertical reinforcing bar of the front wall portion 6 is bent rearward and downward (not shown).

[Spraying Layer Forming Step, etc.] A spraying layer 16 containing artificial soil and seeds is sprayed and formed on the front wall 6 and the front surface of the greening sheet 8 that appears through the front wall 6. In the present embodiment, the spray layer 16 having a thickness of about 60 mm was formed. Also,
Instead of or in addition to the spray layer 16, artificial grass or the like may be attached.

[Vegetation Member Attaching Step] A number of vegetation members (not shown) are attached to the spraying layer 16 and the embankment material 9 by driving or inserting them at a required angle. As the vegetation member, for example, a cylinder, a half cylinder, a channel, or the like having a large number of through holes can be used. Various greening plants are planted or planted in the form of seeds, seedlings or cuttings on the soil inside the vegetation member.

According to the protection greening structure of the rock slope 1 constructed by the above construction method, the use of the grid frame fence 5
Can be installed even on steep slopes.No heavy equipment is required for construction.
It is capable of human work, easy to construct, does not require much manpower, has good workability, can shorten the construction period, can easily cope with a curved rock slope 1, and uses the soil at the site as an embankment material 9 Many effects such as being available can be obtained.

Also, since the front end of the reinforcing sheet 3 is connected to the intermediate height portion of the front wall 6, when the front wall 6 receives earth pressure from behind after construction, the center of the earth pressure becomes The reinforcement sheet 3 pulls the front wall portion 6 at a location close to the grid frame fence 5.
Of the lattice frame fence 5 can be prevented from being shifted to the front side without causing rotational force on the front wall 6 and the front wall 6 alone falling down to the front side. Therefore, the embankment material 9 can be stabilized so as not to move, and the distortion of the slope can be prevented.

Further, since the rigid body 10 extending in the width direction is engaged with the front end of the reinforcing sheet 3, the front end of the reinforcing sheet 3 is less likely to be painful. That is, if the rigid body 10 is not provided, the tensile force concentrates on a portion of the front end of the reinforcing sheet 3 that has passed through the ring, and the pain tends to be painful, but if the rigid body 10 is provided, the tensile force is reduced by the front end of the reinforcing sheet 3. Because it is dispersed throughout, it is less painful.

In this embodiment, since the rigid body 10 extending in the width direction is also attached to the rear end of the reinforcing sheet 3, the rigid body 10 comes into contact with the embankment material 9 and is hooked. For this reason, the resistance to pulling out the reinforcing sheet 3 from the embankment material 9 is increased, and the integrity of both is improved.

Note that the present invention is not limited to the configuration of the above-described embodiment, and may be embodied with appropriate modifications without departing from the spirit of the invention, for example, as described below. (1) The greening sheet 8 is omitted. (2) In each embodiment, the front wall 6 of the upper grid frame fence 5 is arranged to overlap the front wall 6 of the lower grid frame fence 5 on the rear side. ), The front wall 6 of the upper grid frame fence 5 may be arranged so as to overlap the front wall 6 of the lower grid frame fence 5 on the front side. In addition, in FIG. 7A, illustration of each part other than the lattice frame fence 5 is omitted for convenience. (3) As shown by a thick line in FIG. 7B, a reinforcing bar connecting the reinforcing sheet 3 should be thicker than other reinforcing bars. Thereby, the bending deformation of the reinforcing bar to which the reinforcing sheet 3 is connected can be prevented. (4) As shown by a two-dot chain line in FIG. 2, the fertilizer belt 17 is provided on the front side, the rear side, or both front and rear sides of the front wall portion 6. (5) Instead of the rock slope 1, the invention is applied to the walls of concrete structures such as retaining walls and dams, and to the shore of rivers and artificial canals.

[0038]

As described in detail above, according to the protection structure for slopes, walls, shores and the like according to the present invention, the entire grid frame fence moves to the front side due to earth pressure, or only the front wall portion moves. Has an excellent effect that the filler does not fall down to the front side and is deformed, thereby stabilizing the filler so as not to move, and preventing distortion of the slope.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a protective greening structure for a rock slope according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same structure.

FIGS. 3A to 3C are partial perspective views showing a connection between a front wall portion and a reinforcing sheet having the same structure.

FIGS. 4A to 4E are partial side views showing a modification of the connection.

FIGS. 5A to 5C are partial perspective views showing another example of the reinforcing sheet having the same structure.

FIGS. 6A and 6B are side views showing a connection position range of a reinforcing sheet having the same structure.

FIG. 7A is a perspective view of a modification of the arrangement of the lattice frame fence,
(B) is a perspective view of a modification example of a lattice frame fence.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rock slope 2 Site 3 Reinforcement sheet 5 Grid frame fence 6 Front wall part 6a Lateral reinforcing bar 7 Bottom wall part 8 Greening sheet 9 Embankment material 10 Rigid body 10b Second rigid body 11 Ring 12 Hole 13 Cut 13 Sewing 15 Pile 16 Spray layer 20 Connection band 21 Large staple 22 S-shaped hook 23 Pipe crank 24 Carabiner

Claims (8)

[Claims] 1. A grid frame fence comprising an inclined front wall portion made of a reinforced grid and a horizontal bottom wall portion and installed in front of a surface to be protected such as a slope, a wall surface, a shore surface, and the like. Filling material such as embankment material, rocks, etc. filled between the surface to be protected constitutes one step, and the steps, slopes, walls, and shores constructed in multiple steps by stacking the steps from bottom to top A protection structure for slopes, walls, shores, etc., wherein a reinforcing sheet extending toward a protection target surface is connected to an intermediate height portion of the front wall portion. 2. The intermediate height portion is one of the total height of the front wall portion.
The slope, wall surface, according to claim 1, which is at a height of / 5 to 4/5.
Protection structure such as shore. 3. The protection structure according to claim 1, wherein the reinforcing sheet is a geotextile made of a fiber material. 4. The protection structure according to claim 1, wherein the reinforcing sheet is a geotextile-related product made of a non-fiber material. 5. The protection structure for a slope, a wall surface, a shore surface or the like according to claim 1, wherein a rigid body extending in a width direction is fixed to a front end portion of the reinforcing sheet. 6. The protection of a slope, a wall surface, a shore surface, and the like according to claim 5, wherein the rigid body is attached to the reinforcing sheet by folding a front end of the reinforcing sheet and covering the rigid body. Construction. 7. The rigid body is attached to the reinforced sheet by passing a front end of the reinforced sheet through a space formed by folding and stitching the reinforced sheet.
Protective structure for the described slopes, walls, shores, etc. 8. The slope according to claim 5, 6 or 7, wherein a reinforcing bar constituting an intermediate height portion of the front wall portion and a reinforcing sheet beyond the rigid body are connected by a connecting member. ,
Protection structure for walls, shores, etc.