JP2008308948A - Vertical retaining wall, and construction method of vertical retaining wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical retaining wall having excellent draining property and sufficient strength and constructible at low cost. <P>SOLUTION: The vertical retaining wall 1 is formed by stacking units having front faces formed of concrete plates 10 of porous concrete and bottom faces 22 and back faces 21 formed of wire mesh panels 20a, 20b, 20c. Water permeable sheets 25 are laid inside the bottom faces 22 and back faces 21 of the units, and crushed concrete 30 is filled. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vertical retaining wall and a method for constructing the vertical retaining wall, and more particularly to a vertical retaining wall using a unit unit in which a front surface is configured by a concrete plate and a bottom surface and a rear surface are configured by a wire mesh panel, and a method for the same.

  Retaining wall is a wall-like structure provided at the boundary to maintain the level difference of the ground surface due to cut or embankment, and vertical retaining wall is a vertical standing wall standing up front Retaining wall. For the conventional concrete vertical retaining wall, the L-shaped retaining wall 100 shown in FIG. 8 and the reinforced soil retaining wall 200 shown in FIG. 9 have been mainly employed.

  The L-type retaining wall 100 is obtained by placing or forming a concrete member 101 having a vertical cross-section on the foundation concrete 102, and performing embankment 110 on the bottom of the member 101 and behind the vertical wall. is there. Further, the reinforcing soil retaining wall 200 is formed by vertically stacking a plurality of concrete plates 201 on the ground and performing the embankment 110 behind the concrete plate 201. The embankment 110 is horizontally stripped or sheet-like. The reinforcing material 202 is embedded, and the reinforcing material 202 and each concrete plate 201 are connected by a connecting member.

Another type of retaining wall is a wire mesh retaining wall. This wire mesh wall is formed by filling and stacking chestnuts and cracked stones in a wire mesh wall.
JP 2000-73331 A JP-A-11-166219 JP 2005-98093 A

  The L-type retaining wall 100 and the reinforced soil retaining wall 200 need to drain the embankment 110, drain a hole in the front wall surface, and bury a plurality of drain pipes in the embankment 110 to drain the water. The drainage is conducted in communication with the hole. However, since the embankment 110 clogs the earth and sand, the drainage performance is poor, and the drainage pipe is clogged with the earth and sand, which increases the maintenance cost. There is also a risk of collapsing the retaining wall due to the sucking out phenomenon of the backside earth and sand. In addition, since a large-scale excavation work is required, the cost increases and the process management becomes complicated, and a large material management place is required. In particular, the reinforced soil retaining wall 200 supports the concrete plate 201 that is likely to collapse due to the earth pressure of the embankment 110 by the frictional resistance force against the earth and sand of the reinforcing material 202, so that the reinforcing material is relatively long behind the concrete plate 201. 202 needs to be spread, and the embankment 110 needs to be performed over a wide area.

  A wire mesh retaining wall is generally not applicable to a location where an automobile load directly acts on the upper surface in terms of strength. In addition, since the wire mesh on the front of the retaining wall is pushed by the stone inside and bulges outside, there is also a feeling of psychological pressure, it is very difficult to stack vertically, as a vertical retaining wall when making roads etc. on the top surface Can not be used.

  This invention is made | formed in view of this point, The place made into the objective is providing the vertical retaining wall which has sufficient drainage property and can be constructed | assembled at low cost, and has sufficient intensity | strength.

  In order to solve the above problems, the vertical retaining wall is formed by arranging unit units having a concrete plate as a front surface and a wire mesh panel as a bottom surface and a back surface.

  Specifically, the vertical retaining wall of the present invention comprises a plurality of unit units each having a front surface made of a concrete plate and a bottom surface and a back surface made of a wire mesh panel, and each of the front and rear sides forms a retaining wall. A vertical retaining wall formed by filling at least one kind of stone and concrete crushed material on the bottom surface between the front surface and the back surface of the unit unit, wherein the concrete plate is made of permeable porous concrete. A front wall portion serving as a front surface of the unit unit and a projecting portion protruding rearwardly from the front wall portion in a rib shape, and the bottom surface and the back surface of the wire mesh panel having an L-shaped vertical cross section. It is constructed by bending into a mold, a water-permeable sheet is arranged inside the back surface, and the concrete plates arranged vertically are projected from the lower concrete plate The upper end of the metal plate and the lower end of the protruding portion of the upper concrete plate are fixed by a connecting member, and the front edge of the wire mesh panel is fixed to the concrete plate by the connecting member. . In addition, that the water-permeable sheet | seat is arrange | positioned inside the back means that the whole surface of the side facing the front surface of a metal-mesh back is covered with the water-permeable sheet.

  Since the front surface is made of a concrete plate made of porous concrete and the back portion is filled with at least one of stone and crushed concrete, the drainage is good. Moreover, since the unit units are arranged side by side and filled with stones or concrete crushed material and further unit units are stacked thereon, a retaining wall having sufficient strength can be constructed at low cost.

  In the two unit units that are vertically adjacent to each other, the distance between the front surface and the back surface may be larger on the upper side than on the lower side.

  The concrete plate and the bottom surface may be further connected by a reinforcing stay.

  The vertical retaining wall construction method of the present invention is a vertical retaining wall construction method in which a plurality of concrete plates are stacked to form a vertical retaining wall, comprising a step A for installing a foundation block on the ground, and a top of the foundation block. Is made of water-permeable porous concrete, and a concrete plate constituting the retaining wall is placed on the rear side of the concrete plate, and one end of a wire mesh panel having an L-shaped vertical section is connected to the rear side of the concrete plate. A step B of providing a bottom surface and a back surface made of the wire mesh panel, a step C of covering the inside of the back surface with a water permeable sheet, and a stone and a concrete crushed material between a rear side of the concrete plate and the water permeable sheet. And a step D of filling at least one kind.

  After the step D, another concrete plate made of porous concrete is placed on the concrete plate, and one end of another wire mesh panel having an L-shaped vertical cross section is connected to the lower rear side of the other concrete plate. Then, a step B ′ for providing a bottom surface and a back surface made of another wire mesh panel behind the another concrete plate, a step C ′ for covering the inner side of the back surface with a water permeable sheet, A step D ′ of filling at least one kind of stone and concrete crushed material between a rear side and the water-permeable sheet; and after the step D ′, steps B ′, C ′, and D ′ are again performed in this order. The distance between the other concrete plate and the back surface of the other wire mesh panel in the step B ′ that is performed a plurality of times and is performed again may be greater than or equal to the distance in the previous step B ′.

  Unit units, which are concrete plates made of porous concrete on the front, are stacked, and stones and crushed concrete are put into them to make vertical retaining walls. Therefore, construction is easy, low cost, and high drainage can be secured.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following drawings, components having substantially the same function are denoted by the same reference numerals for the sake of brevity.

(Embodiment 1)
A schematic cross section of a vertical retaining wall according to Embodiment 1 is shown in FIG. The vertical retaining wall 1 is provided by excavating a part of the slope, and a road is formed at the top. The front part of the vertical retaining wall 1 is formed by arranging a plurality of concrete plates 10, 10,... Made of porous concrete. Moreover, the thing which bent the planar metal-mesh panel 20a, 20b, 20c and made the vertical cross section into the L-shape is put on the back part of the concrete board 10,10, ....

  The wire mesh panels 20a, 20b, and 20c are made of a galvanized welded wire mesh, and include a bottom surface 22 that extends horizontally and a back surface 21 that extends vertically upward from an end of the bottom surface 22. The front edges of the wire mesh panels 20a, 20b, and 20c are connected and fixed to the lower end of the concrete plate 10, and the bottom surface 22 extends rearward therefrom, and the rear surface 21 extends upward from the rear end of the bottom surface 22. The height of the back surface 21 is substantially the same as the height of the concrete plate 10. One wire mesh panel 20a (or 20b, 20c) is connected to one concrete plate 10 to form a unit unit. A plurality of unit units are connected vertically and horizontally to form the vertical retaining wall 1. Note that even if the unit units are stacked on the roadside slope (right side of the figure), a leaning retaining wall is formed.

  A water permeable sheet 25 made of a polyester-based nonwoven fabric or the like is disposed inside the back surface 21 of the unit unit (the side facing the concrete plate 10 of the back surface 21). Further, the bottom surface 22 and the concrete plate 10, and the bottom surface 22 and the back surface 21 are connected by reinforcing stays 27 and 27 so that the concrete plate 10 and the back surface 21 do not fall down. The reinforcing stay 27 is formed by hooking both ends of a steel wire. One hook is hung on the top of the concrete plate 10 and the back surface 21, and the other hook is hung on the bottom surface 22. As can be seen from the figure, the reinforcing stays 27 and 27 connect the concrete plate 10 and the back surface 21 standing vertically and the horizontal bottom surface 22 obliquely like a hypotenuse of a right triangle.

  Further, a crushed concrete (crusher run) 80 is filled between the front surface (concrete plate 10) and the back surface 21 of the unit unit and on the bottom surface 22. The concrete crushed material 80 is generated when a structure made of concrete is demolished and is used for reclamation because it is inexpensive. Since the water-permeable sheet 25 is disposed inside the back surface 21, even if the concrete crushed material 80 having a diameter smaller than the mesh of the wire mesh panel 20a (or 20b, 20c) is filled, the spilling from the mesh of the back surface 21 Absent. The back of the back surface 21 is filled with earth and sand 70.

  Another unit unit is placed on the unit unit filled with the crushed concrete 80. In this way, the unit units are stacked up, and the vertical retaining wall 1 having a required height is formed. A plurality of unit units are also arranged in the horizontal direction to form the vertical retaining wall 1. Here, the filling material is the concrete crushed material 80, the water permeable sheet 25 is disposed inside the back surface 21 of the unit unit, and the concrete plate 10 on the front surface is made of porous concrete. Even so, the permeated water quickly flows between the concrete crushed material 80 and flows forward from the concrete plate 10. Moreover, since the water-permeable sheet 25 prevents the earth and sand from entering the unit unit, the concrete plate 10 can be prevented from being clogged with the earth and sand, and high drainage can be maintained for a long period of time.

  By stacking the unit units and filling the concrete crushed material 80 as described above, the concrete crushed material 80 partially protrudes downward from the mesh of the bottom surface 22. Then, the crushed concrete 80 protruding from the mesh meshes well with the crushed concrete 80 of the lower unit unit. In this way, the upper and lower unit units are integrated, and the integrity of the entire vertical retaining wall 1 is maintained.

  Further, in this embodiment, the unit units are stacked up and down 10 levels, but when these 10 levels are divided into upper, middle and lower three, the distance between the front concrete plate 10 and the rear surface 21 (the bottom surface 22 The length) is larger in the middle four stages than in the lower three stages, and more in the upper three stages than in the middle four stages. Note that the lengths of the bottom surfaces 22 of the three unit units arranged above and below in the upper stage are the same, and the same applies to the four unit units in the middle stage and the three unit units in the lower stage. With such a configuration, the vertical retaining wall 1 can be formed even if the excavation amount of the slope is small. This structure is supported by the integration of the above-described upper and lower unit units between the concrete crushed objects 80, and there is no possibility that the vertical retaining wall 1 will collapse due to earth pressure from the slope side.

  Here, when comparing the vertical retaining wall 1 of the present embodiment with the ecological conservation block of Patent Document 1, the ecological conservation block of Patent Document 1 has a U-shaped planar shape on the back surface of the concrete block that becomes the retaining wall surface. Since it consists of a mesh frame that opens up and down, the only thing that supports the earth pressure on the retaining wall is the side part of the mesh frame, which is weak against tensile forces, so the retaining wall needs to be leaning. On the other hand, in the vertical retaining wall 1 of the present embodiment, the weight of the concrete crushed material 80 that is the filler is applied to the bottom surface 22 of the unit unit, and the forward pressure applied to the retaining wall is reduced. Since it can be supported more than enough, the retaining wall can be made vertical, and even if a road is formed at the top, there is no risk of collapse.

  Moreover, when the vertical retaining wall 1 of this embodiment is compared with the civil engineering structure of patent document 2, since the civil engineering structure of patent document 2 presupposes a revetment structure, it is not drained from a front wall, a road etc. in the uppermost part. The pressure applied to the retaining wall cannot be supported to the extent that it can be formed, and since it is leaning, it cannot be a vertical retaining wall.

  Furthermore, when the vertical retaining wall 1 of this embodiment is compared with the block retaining wall of Patent Document 3, the block retaining wall of Patent Document 3 cannot support the pressure applied to the retaining wall to such an extent that the vertical retaining wall can be formed. Since it relies on pipes for drainage, there are drainage problems such as clogging of pipes.

  As described above, the vertical retaining wall 1 of the present embodiment has a high drainage property and a strength capable of forming a road in the upper portion, and can reduce the amount of excavation of the slope and use the concrete crushed material 80 for the filling. Therefore, it can be constructed at low cost. Furthermore, since the concrete board 10 is formed using porous concrete which is lighter than normal concrete, and this concrete board 10 is the heaviest item in the unit unit, the unit unit itself is lightweight. Large cranes are no longer necessary, and in this respect construction costs can be reduced and construction periods can be shortened.

(Embodiment 2)
The vertical retaining wall of the second embodiment has three unit units stacked in the vertical direction, and FIG. 2 shows a perspective view seen from the front upper side, and FIG. 3 shows a perspective view seen from the rear upper side.

  The vertical retaining wall 2 of the present embodiment shown in FIGS. 2 and 3 is obtained by extracting four unit units 5 arranged in the horizontal direction (left-right direction). The water-permeable sheet is omitted.

  The upper and lower three-stage unit units 5, 5, and 5 are provided with concrete plates 10, 10, and 10 and wire mesh panels 20a, 20b, and 20c. When each stage is compared, it is a part of the wire mesh panels 20a, 20b, and 20c. The lengths of certain bottom surfaces 22 are different. That is, the lower stage is the shortest, the upper stage is the longest, and the middle stage is the intermediate length. Except for the length of the bottom surface 22, the upper, middle, and lower portions have the same configuration.

  The concrete plates 10, 10, 10 are made of porous concrete having water permeability, and a front wall portion 15 that is a front surface of the unit unit 5, and a protruding portion that protrudes on a rib on the rear side of the front wall portion 15. 11 and 11. One concrete board 10 includes two protrusions 11 and 11. The vertical length (height) of the projecting portion 11 is the same as the vertical length (height) of the front wall portion 15. When another concrete plate 10 is stacked on one concrete plate 10, While the upper end of one front wall part 15 and the lower end of another front wall part 15 contact | abut entirely, upper and lower protrusion parts 11 and 11 also contact | abut the upper end and lower end, and two concrete boards 10, 10 can be stacked stably. Here, at the lower end and the upper end of the front wall portion 15, there are steps 12, 12, respectively, and the steps 12, 12 are fitted to each other to position the upper and lower concrete plates 10, 10 at the time of stacking. The plates 10 and 10 are prevented from shifting from each other.

  The upper and lower concrete plates 10 and 10 are fixed to each other by connecting the lower end of the upper protruding portion 11 and the upper end of the lower protruding portion 11 by a connecting member 30 having a bolt hole formed in a metal plate. Yes. Here, as shown in FIG. 4, a recess 13 is provided at the upper end of the protrusion 11, and the steel wire at the front edge of the wire mesh panel 20 a (or 20 b, 20 c) is fitted into the recess 13. ing. Therefore, after fitting the steel wire at the front edge of the wire mesh panel 20a (or 20b, 20c) into the recess 13, the connecting member 30 is applied so as to cover the recess 13, and the bolt is inserted into the bolt hole. The bolts are screwed into the provided bolt holes, and the upper and lower concrete plates 10 and 10 and the wire mesh panel 20a (or 20b and 20c) are connected and fixed to each other.

  A concave portion 14 is provided on the upper portion of the side surface of the front wall portion 15. The recess 14 is a place where a hook of the reinforcing stay 27 is inserted. That is, the concrete plates 10 and 10 adjacent to the left and right are arranged with the concave portions 14 and 14 in contact with each other, the connecting member 30 is attached so as to cover the concave portions 14 and 14, and the hook of the reinforcing stay 27 is It is inserted into the recesses 14 and 14 and hooked on the connecting member 30. The hook on the opposite side of the reinforcing stay 27 is hooked on the steel wire on the bottom surface 22. In this way, the concrete plates 10 and 10 adjacent to each other on the left and right are connected and fixed by the connecting member 30.

  Further, the metal mesh panels 20a, 20b (or 20b, 20c) arranged in the vertical direction are connected and fixed by U bolts.

  Next, the construction method of the vertical retaining wall 2 of this embodiment is demonstrated with reference to FIG.

  First, the foundation ground 50 which excavates the slope of a construction place and forms the vertical retaining wall 2 is provided (FIG. 5 (a)).

  Then, the foundation block 9 is placed on the foundation ground 50, and crushed stone is laid on the back of the foundation block 9 so as to be almost the same height as the foundation block 9 (FIG. 5B). A plurality of base blocks 9 are arranged adjacent to each other in the horizontal direction.

  Next, the concrete board 10 is placed on the foundation block 9. At this time, since the foundation block 9 is provided with a step 12 ′ having the same shape as the step 12 of the concrete plate 10, the foundation block 9 and the concrete plate 10 are positioned by fitting the step 12 ′ and the step 12 together. The Further, a wire mesh panel 20 a having a bottom surface 22 and a back surface 21 is placed on the back of the concrete plate 10, and a steel wire at the front edge is connected and fixed to the concrete plate 10 and the foundation block 9 by a connecting member 30. Thus, the unit unit 5 is formed. In addition, after putting the metal-mesh panel 20a first, the concrete board 10 may be put, and then both may be connected and fixed by the connecting member 30. Then, the water-permeable sheet 25 is arranged inside the back surface 21 and the concrete plate 10 and the bottom surface 22 and the back surface 21 and the bottom surface 22 are connected by the reinforcing stays 27 and 27 (FIG. 5C).

  The unit unit 5 is filled with the crushed concrete 80, and the back portion of the back surface 21 is backfilled with earth and sand 70 (FIG. 5D).

  Then, another concrete board 10 is installed on the concrete board 10 on the foundation block 9. A wire mesh panel 20b having a bottom surface 22 and a back surface 21 is placed on the back of the other concrete plate 10, and a steel wire at the front edge is connected and fixed to the upper and lower concrete plates 10 and 10 by a connecting member 30. In this way, another unit unit 5 is formed. Note that the wire mesh panel 20b may be placed first, then another concrete plate 10 may be placed next, and then both may be connected and fixed by the connecting member 30. Here, the wire mesh panel 20b placed on the upper side has a longer bottom surface 22 than the lower wire mesh panel 20a. Then, a water-permeable sheet 25 is laid inside the back surface 21 and the bottom surface 22, and the concrete plate 10 and the bottom surface 22 and the back surface 21 and the bottom surface 22 are connected by the reinforcing stays 27 and 27 (FIG. 5 (e)).

  Thereafter, the step of FIG. 5 (d) is performed, and the concrete plate 10 and the wire mesh panel 20c are further installed in the same manner as in FIG. 5 (e), and the step of FIG. A vertical retaining wall 2 of step height is completed.

  As described above, in the present embodiment, if five types of members including the concrete plate 10, the wire mesh panels 20 a, 20 b, 20 c, the reinforcing stay 27, the connecting member 30, and the water permeable sheet 25 are prepared, it is perpendicular to the foundation block 9. Since the retaining wall 2 can be built and the number of types of members is small, the construction can be easily performed and the cost can be kept low. Moreover, since it is not necessary to use cast-in-place concrete, the curing period is unnecessary and the construction period can be shortened. Further, in the present embodiment, the effect of the first embodiment is also achieved, and the effect of the present embodiment is also exhibited in the first embodiment.

(Embodiment 3)
As shown in FIG. 6, the vertical retaining wall of the third embodiment is different from the first embodiment in the length of the bottom surface 22 of the stacked unit units. That is, the length of the bottom surface 22 is long in the lower three steps, the middle four steps are shorter than the lower portion, and the upper three steps are shorter than the middle portion. Except for the length of the bottom surface 22, the vertical retaining wall 3 of the present embodiment has the same structure and material as the vertical retaining wall 1 of the first embodiment. The vertical retaining wall 3 of the present embodiment has a greater amount of excavation during construction than the vertical retaining wall 1 of the first embodiment, but otherwise has the same effects as the first embodiment.

(Embodiment 4)
As shown in FIG. 7, the vertical retaining wall of the fourth embodiment is different from the first embodiment in the length of the bottom surface 22 of the stacked unit units. That is, the length of the bottom surface 22 is the same in all steps. Except for the length of the bottom surface 22, the vertical retaining wall 4 of the present embodiment is the same in structure and constituent material as the vertical retaining wall 1 of the first embodiment. The vertical retaining wall 4 of the present embodiment has a slightly larger amount of excavation during construction than the vertical retaining wall 1 of the first embodiment, but otherwise has the same effects as the first embodiment.

(Other embodiments)
The above embodiments are examples of the present invention, and the present invention is not limited to these examples. For example, crushers mixed with pebbles, crushed stones, and sand may be filled instead of crushed concrete, or earth and sand may be mixed, or a mixture thereof may be filled. The shape of the concrete board 10 is not limited to the above, and for example, only one protrusion 11 may be provided, and an arbitrary pattern may be used as the pattern on the front side.

  As described above, since the vertical retaining wall according to the present invention has good drainage and can be easily constructed, it is useful as a vertical retaining wall provided with a road on the upper side.

3 is a cross-sectional view schematically showing a vertical retaining wall of Embodiment 1. FIG. It is the perspective view which looked at the vertical retaining wall of Embodiment 2 from the front. It is the perspective view which looked at the vertical retaining wall of Embodiment 2 from back. It is an enlarged view of the connection part of two concrete boards. It is a schematic sectional drawing explaining the construction method of the vertical retaining wall of Embodiment 2. It is sectional drawing which showed the vertical retaining wall of Embodiment 3 typically. It is sectional drawing which showed the vertical retaining wall of Embodiment 4 typically. It is sectional drawing which showed the L-type retaining wall typically. It is sectional drawing which showed the reinforced earth retaining wall typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Vertical retaining wall 3, 4 Vertical retaining wall 5 Unit unit 9 Foundation block 10 Concrete board 11 Protrusion part 15 Front wall part 20a-c Wire mesh panel 21 Back surface 22 Bottom face 25 Permeable sheet 27 Reinforcement stay 30 Connecting member 50 Foundation ground 80 Crushed concrete

Claims (5)

A plurality of unit units, each of which has a concrete plate on the front and a metal mesh panel on the bottom and back, are arranged vertically and horizontally so that each front forms a retaining wall, and between the front and back of the unit unit. A vertical retaining wall formed by filling at least one of stone and concrete crushed material on the bottom surface,
The concrete plate is made of water-permeable porous concrete, and includes a front wall portion that is a front surface of the unit unit and a protruding portion that protrudes rearward from the front wall portion in a rib shape,
The bottom surface and the back surface are configured by bending the wire mesh panel into a vertical cross-section L-shape,
A water-permeable sheet is arranged inside the back surface,
The concrete plates arranged one above the other are fixed by connecting the upper end of the protruding portion of the lower concrete plate and the lower end of the protruding portion of the upper concrete plate by a connecting member,
A vertical retaining wall, wherein a front edge of the wire mesh panel is fixed to the concrete plate by the connecting member.   2. The vertical retaining wall according to claim 1, wherein, in two unit units vertically adjacent to each other, a distance between the front surface and the back surface is larger on the upper side than on the lower side.   The vertical retaining wall according to claim 1, wherein the concrete plate and the bottom surface are further connected by a reinforcing stay. A vertical retaining wall construction method in which a plurality of concrete plates are stacked to form a vertical retaining wall,
Process A to install the foundation block on the ground,
It is made of water-permeable porous concrete on the foundation block, and a concrete plate constituting a retaining wall is placed thereon, and one end of a wire mesh panel having a L-shaped vertical section is connected to the lower rear side of the concrete plate, Step B for providing a bottom face and a rear face made of the wire mesh panel behind the concrete board,
Covering the inner side of the back with a water-permeable sheet; and
A method for constructing a vertical retaining wall, comprising: a step D in which at least one kind of stone and concrete crushed material is filled between a rear side of the concrete plate and the water-permeable sheet. After the step D, another concrete plate made of porous concrete is placed on the concrete plate, and one end of another wire mesh panel having an L-shaped vertical cross section is connected to the lower rear side of the other concrete plate. Then, a step B ′ for providing a bottom surface and a back surface made of the other wire mesh panel behind the another concrete plate,
Step C ′ for covering the inner side of the back surface with a water-permeable sheet;
A step D ′ of filling at least one kind of stone and concrete crushed material between the rear side of the another concrete plate and the water permeable sheet; and
After Step D ′, Steps B ′, C ′, and D ′ are performed a plurality of times in this order,
The method for constructing a vertical retaining wall according to claim 4, wherein a distance between the another concrete plate and the back of the other wire mesh panel in the step B 'to be performed is equal to or greater than the distance in the previous step B'. .

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