JPWO2006021987A1 - Vegetation retaining wall - Google Patents

Abstract

It is an object of the present invention to provide a vegetation retaining wall capable of obtaining the volume of soil, water supply, and oxygen required for the growth of trees to be vegetated without causing difficulty in carrying work and construction work. Therefore, in the present invention, the customer soil G is put into the predetermined first retaining wall block 1 up to the height position of the lower step portion 12b, and the first retaining wall block 1 and the ground up to the same height position. The backing material R is introduced between the mountain J and the water supply block 3 is placed between the lower steps 12b (12b) of the first retaining wall block 1. And while filling the above-mentioned filling material F in the block 3 for water supply to the height position of the front wall 30 of the block 3 for water supply, between the block 1 for water supply and the natural ground J to this same height position The backing material R is put into the wall, and the soil G is further put between the front wall 10 and the water supply block 3 up to the height of the front wall 10.

Description

  The present invention relates to a retaining wall for vegetation that protects a slope and allows a plant to grow by introducing soil into the interior.

  Following the slope of the construction object, a vegetation retaining wall was created by stacking multiple rectangular cylindrical retaining wall blocks in a staircase shape while filling each retaining wall block Yes. In such retaining walls, plants can be grown on the soil filling part of each retaining wall block by using the soil for a part of the insert, but these plants grow smoothly. In order to achieve this, it is important to stably supply water to plants. Therefore, this inventor has disclosed the following retaining wall for vegetation in Japanese Unexamined Patent Publication No. 2000-104268.

  FIG. 18 is a side sectional view showing a conventional vegetation retaining wall disclosed by the present inventor, in which 50 is a retaining wall block and 60 is water supply installed inside the retaining wall block 50. Block. The rear wall 52 of the rectangular cylindrical retaining wall block 50 is made lower than the front wall 51, and both side walls 53 (53) of the retaining wall block 50 extend from the front wall 51 to the rear wall 52. After extending for a predetermined distance with the same height as the height, it is connected to the rear wall 52 via a stepped portion having the same height as the height of the rear wall 52. A vertical groove (not shown) is provided from the ceiling surface of the side wall 53 (53) to a position on the bottom side of a predetermined dimension at a position slightly behind the step portion of the side wall 53 (53). Inside, both side edges of a strip-like partition block 57 that partitions the interior of the retaining wall block 50 back and forth are fitted. A short bottom wall 54 is connected to the bottom of the front wall 51 described above.

  On the other hand, the water supply block 60 has a shape substantially similar to the retaining wall block 50 except that it has a bottom, and the height dimension of the front wall 61 of the water supply block 60 is the same as that of the retaining wall block 50. The dimension from the step portion of the side wall 53 to the upper end of the front wall 51 of the retaining wall block 50 is substantially the same.

  At a position slightly higher than the bottom wall 64 of the front wall 61 of the water supply block 60, a through hole 61 a penetrating the front wall 61 is opened in parallel with the bottom wall 64. A string-like pumping member 67 that pumps up the water in the water supply block 60 by capillary rise is inserted into the through-hole 61a. The other end side of the pumping member 67 is extended to the outside of the water supply block 60 by an appropriate distance.

  And while installing the partition block 57 in the retaining wall block 50 arranged according to the slope, the front wall 51 side of the retaining wall block 50 is provided with an intermediary material F such as crushed stone and crushed stone of an appropriate size. After thinly laying the back wall 52 side thickly, the water supply block 60 is disposed so as to be placed on the intermediate material F on the rear wall 52 side of the retaining wall block 50, and the water supply in the retaining wall block 50 is arranged. The intermediate material F is thrown into the rear wall 52 side of the block 60 to the height position of the front wall 51 of the retaining wall block 50 and is inserted into the retaining wall block 50 into the water supply block 60. An intermediate material F having a size larger than F is introduced to the height position of the front wall 51 of the retaining wall block 50. As a result, the porosity is increased to increase the capacity of the water stored in the water supply block 60, and the one end side of the water pumping member 67 is fixed to the bottom wall 64 of the water supply block 60 with the insert material F.

  The upper retaining wall block 50 is placed on the lower retaining wall block 50 thus constructed, and the bottom wall 54 of the upper retaining wall block 50 is formed by the front wall 61 and the partition block 57 of the lower water supply block 60. After being placed so as to be supported, the same operation as before is performed to construct the upper retaining wall block 50 and the upper water supply block 60. And after repeating such an operation | work, the customer soil G, G, ... is each on the front wall 51,51, ... side from the water supply blocks 60,60, ... in each retaining wall block 50,50, .... , A vegetation retaining wall in which water supply blocks 60, 60,... Are embedded in a plurality of stages of retaining wall blocks 50, 50,.

  In such a vegetation retaining wall, plants P, P,... Can be transplanted to the customer soils G, G,. On the other hand, the rain on the upper soil walls G, G,... In the upper retaining wall blocks 50, 50,... Penetrates into the lower soil walls G, G,. ,... Are stored in the water supply blocks 60, 60,. Then, the rainwater stored in the water supply blocks 60, 60,... Is pumped up by the capillary rise of the pumping member 67 and penetrates into the soils G, G,. It is supplied to the plants P, P,... Via the soils G, G,.

  However, in such a vegetation retaining wall, the volume of the guest soils G, G,... In the retaining wall blocks 50, 50,. It was relatively difficult. On the other hand, when the retaining wall block having a larger size than the retaining wall blocks 50, 50,... Is used, there is a possibility that the transportation work and the construction work may be difficult.

  By the way, Japanese Patent Application Laid-Open No. 8-134940 proposes the following vegetation retaining wall.

  FIG. 19 is a side sectional view showing a retaining wall for vegetation disclosed in Japanese Patent Application Laid-Open No. 8-134940, in which 70, 70,... Are retaining wall blocks. FIG. 20 is a perspective view of the retaining wall block 70 shown in FIG. As shown in FIG. 20, the retaining wall block 70 includes two large frame portions 71 and 71 having a rectangular shape with a large size in the depth direction and two small frame portions having a bottomed rectangular tube shape with a small size in the depth direction. 72, 72 are arranged alternately with the rear side aligned. Accordingly, the front walls 71a, 71a of the large frame portions 71, 71 protrude forward from the front walls 72a, 72a of the small frame portions 72, 72.

  The rear wall 75 of the retaining wall block 70 is inclined at an angle corresponding to the slope with respect to the bottom surface, and is substantially the center of the portion corresponding to the large frame portions 71 and 71 and the small frame portions 72 and 72 of the rear wall 75. Are provided with vent holes 76, 76, 76, 76 penetrating the rear wall 75, respectively. On the other hand, a drain hole 77 (77) (see FIG. 19) penetrating through the bottom walls 74, 74 is formed at the approximate center of the bottom walls 74, 74 of both small frame portions 72, 72.

  In order to construct a retaining wall using such a retaining wall block 70, as shown in FIG. 19, a plurality of retaining wall blocks 70 (70, 70,. The upper retaining wall block 70 has upper and lower rear walls 75, 75, and so on, and the large frame portion 71 (71) of the upper retaining wall block 70 is connected to the lower retaining wall block 70 (70. ) Is repeated so as to be positioned on the small frame portion 72 (72). As a result, a plurality of soil basins 80, 80,... Are formed in which the large frame portion 71 (71) of the upper retaining wall block 70 and the small frame portion 72 (72) of the lower retaining wall block 70 communicate with each other. The Then, after putting the soils G, G,... Into each of the soil basins 80, 80,..., Plants P, P,.

  As a result, a relatively deep soil basin 80 is formed, and therefore, as the plant P, a tree having a relatively deep root can be vegetated in the soil basin 80. Moreover, the rain to the customer soil tanks 80, 80,... Of the upper retaining wall blocks 70, 70,... Passes through the drain holes 77, 77,. Supplied to the customer soil tanks 80, 80,.

  However, in the latter vegetation retaining wall, the retaining wall blocks 70, 70,... Are formed by the two upper and lower retaining wall blocks 70, 70. Although the carrying work and the construction work are relatively easy, the soil basin 80 has the entire upper opening except for the upper opening by the large frame portion 71 of the upper retaining wall block 70 and the small frame portion 72 of the lower retaining wall block 70. Since the surroundings are surrounded, it is difficult to obtain a sufficient amount of oxygen necessary for the growth of a high tree, and it is difficult to expect good growth. Further, even if the tree is rooted, there is a problem that the extension of the root is restricted by the peripheral wall of the large frame portion 71 and the peripheral wall and the bottom wall 74 of the small frame portion 72 that surround the customer soil tank 80. Furthermore, since the latter retaining wall for vegetation does not include the water supply block 60 as shown in FIG. 18, in the season when there is little rainfall such as summer, vegetation will be vegetated in the guest soils G, G,. There was also a problem that the plants P, P,.

  The present invention has been made in view of such circumstances, and it is possible to obtain a soil volume, a water supply amount, and an oxygen amount required for growing a tree to be vegetated without causing difficulty in transportation work and construction work. Provide vegetation retaining walls that can be used.

  In the first aspect of the present invention, a plurality of cylindrical retaining wall blocks, in which both side walls are installed between the front wall and the rear wall, are provided side by side along the slope of the construction target, and in the vertical direction. In the vegetation retaining wall, which is stacked in a staircase shape, and in which the soil is introduced, the plant wall can be grown. There is a water supply block for supplying water to the soil between both sides of the retaining wall block into which the customer soil has been thrown in, and the customer is installed in almost the entire area surrounded by the retaining wall block and the water supply block. It is filled with soil, and a stone material is filled in substantially the entire area in the retaining wall block stacked immediately above the retaining wall block filled with the guest soil.

  The present invention according to claim 2 is provided with a plurality of cylindrical first retaining wall blocks in which both side walls are installed between the front wall and the rear wall, along with the lateral surface of the construction object, and in the lateral direction. A vegetation retaining wall that is stacked in a staircase pattern in the direction and is capable of growing plants by introducing soil into the interior, and has both side walls that are longer than the length of both side walls of the first retaining wall block. A cylindrical second retaining wall block constructed between the front wall and the rear wall is on an appropriate first retaining wall block, and the front wall of the second retaining wall block is the first retaining wall block. It is piled up so that it may be the position of the rear wall side of the first retaining wall block or the position of the front wall of the first retaining wall, and between the both side walls of the second retaining wall block, water is supplied to the soil. A water supply block is installed, and the soil is filled in almost the entire area surrounded by the second retaining wall block and the water supply block, The second retaining first retaining wall block with a wall block is Juseki of, characterized in that the stone is are filled.

  According to the third aspect of the present invention, a part of or all of the first retaining wall block in which the second retaining wall blocks are stacked is replaced with the stone, and the soil is replaced by the second retaining wall block. The first retaining wall block is filled with the second retaining wall block, and the second retaining wall block is stacked on both side walls of the first retaining wall block.

  According to a fourth aspect of the present invention, the height of the rear wall of the first retaining wall block in which the second retaining wall blocks are stacked is lower than the height of the front wall, and the first retaining wall A partition block that partitions the inside and the outside in a region higher than the rear wall of the block for use is supported by the first retaining wall block, and part or all of the region surrounded by the first retaining wall block and the partition block, The customer land is filled.

  The present invention according to claim 5 is characterized in that a gap is formed between the rear wall of the first retaining wall block and the partition block.

  According to a sixth aspect of the present invention, an anti-sliding piece is provided on the upper surface of at least one side wall of the first retaining wall block to prevent the stacked second retaining wall block from sliding. The slip prevention piece is fitted in a recess provided on the bottom surface of the corresponding side wall of the second retaining wall block.

  The present invention according to claim 7 is characterized in that a stone material is filled in a substantially entire region in the first retaining wall block stacked immediately above the second retaining wall block.

It is a top view showing an example of the block for the 1st retaining wall used for the retaining wall for vegetation concerning the present invention. It is a rear view which shows an example of the block for 1st retaining walls used for the retaining wall for vegetation concerning this invention. It is sectional drawing by the III-III line of the block for 1st retaining walls shown in FIG. It is a top view which shows an example of the 2nd block for retaining walls used for the retaining wall for vegetation concerning this invention. It is a rear view which shows an example of the 2nd block for retaining walls used for the retaining wall for vegetation concerning this invention. It is sectional drawing by the VI-VI line of the 2nd retaining wall block shown in FIG. It is a top view which shows an example of the block for water supply used for the retaining wall for vegetation concerning this invention. It is a rear view which shows an example of the block for water supply used for the vegetation retaining wall which concerns on this invention. It is sectional drawing by the IX-IX line of the block for water supply shown in FIG. It is a top view of the partition block used for the retaining wall for vegetation concerning the present invention. It is a rear view of the partition block used for the retaining wall for vegetation concerning the present invention. It is sectional drawing by the XII-XII line | wire of the partition block shown in FIG. It is a sectional side view showing the structure of the upper part of the retaining wall for vegetation concerning the present invention. It is a sectional side view which shows the structure of the upper part part of the other retaining wall for vegetation concerning this invention. It is side sectional drawing which shows the structure of the upper part part of the other retaining wall for vegetation concerning this invention. It is side sectional drawing which shows the structure of the upper part part of the other retaining wall for vegetation concerning this invention. It is side sectional drawing which shows the structure of the upper part part of the other retaining wall for vegetation concerning this invention. It is a sectional side view which shows the conventional retaining wall for vegetation which this inventor disclosed. It is a sectional side view which shows the retaining wall for vegetation disclosed by patent document 2. FIG. FIG. 20 is a perspective view of the retaining wall block shown in FIG. 19.

  The vegetation retaining wall according to the present invention is provided with a plurality of cylindrical retaining wall blocks in which both side walls are laid between the front wall and the rear wall in the lateral direction along the slope of the construction target, and in the vertical direction. The retaining wall blocks are stacked in a staircase shape, and the soil is put in one or more appropriate positions. And the water supply block for supplying water to a customer's soil is constructed between the both side walls of the block for retaining walls into which the customer's soil was thrown. While the entire area surrounded by the retaining wall block and the water supply block is filled with the guest soil, substantially the entire area in the retaining wall block stacked immediately above the retaining wall block filled with the guest soil. Is filled with stone. It should be noted that the fact that almost all the area surrounded by the retaining wall block and the water supply block is filled with the soil is that the area facing the bottom of the water supply block in the retaining wall block is also filled with the soil. What is necessary is just to include the case where the stone material is thrown into the bottom part etc. of the said retaining wall block, for example, or it is spread.

  Further, the other vegetation retaining wall according to the present invention has a plurality of cylindrical first retaining wall blocks in which both side walls are laid between the front wall and the rear wall in the lateral direction following the slope of the construction target. In addition to the side walls of the first retaining wall block, both side walls having dimensions longer than the length of the both side walls are installed between the front wall and the rear wall. Two retaining wall blocks are on the appropriate first retaining wall block, and the front wall of the second retaining wall block is at the position of the front wall of the first retaining wall block or slightly less for the first retaining wall. It is piled up so that it becomes the position of the back wall side of the block.

  Between both side walls of the second retaining wall block, a water supply block for supplying water to the soil is erected. And, the main soil is filled in almost the entire area surrounded by the second retaining wall block and the water supply block, and the stone material is filled in the first retaining wall block in which the second retaining wall blocks are stacked. Filled. It should be noted that when the soil is filled in almost the entire area surrounded by the second retaining wall block and the water supply block, the soil is also present in the region facing the bottom of the water supply block in the second retaining wall block. What is necessary is just to be filled, for example, the case where the stone material is thrown into the bottom part etc. of the block for 2nd retaining wall, or it is spread is included.

  Further, in part or all of the first retaining wall block in which the second retaining wall blocks are stacked, the customer soil communicates with the customer soil in the second retaining wall block instead of the stone. The second retaining wall block stacked thereon is carried on both side walls of the first retaining wall block.

  By the way, the height of the rear wall of the first retaining wall block in which the second retaining wall blocks are stacked is lower than the height of the front wall, and is higher than the rear wall of the first retaining wall block. The partition block for partitioning the inside and the outside is supported by the first retaining wall block, and a part or the whole of the region surrounded by the first retaining wall block and the partition block is filled with customer soil. .

  Further, for example, by lowering the rear wall of the first retaining wall block in which the second retaining wall blocks are stacked, the gap is formed between the rear wall and the partition block. is there.

  On the other hand, on the upper surface of at least one side wall of the first retaining wall block, a sliding prevention piece is provided to prevent the second retaining wall block that has been stacked from sliding. 2 It is made to fit in the recessed part provided in the bottom face of the corresponding side wall of the block for retaining walls.

  Furthermore, a stone material is filled in almost the entire region in the first retaining wall block stacked immediately above the second retaining wall block.

  Hereinafter, the present invention will be specifically described with reference to the drawings.

  1 and 2 are a plan view and a rear view showing an example of a first retaining wall block used in the vegetation retaining wall according to the present invention, and FIG. 3 is a diagram for the first retaining wall shown in FIG. It is sectional drawing by the III-III line of a block. Moreover, FIG.4 and FIG.5 is the top view and rear view which show an example of the block for 2nd retaining walls used for the retaining wall for vegetation concerning this invention, FIG. 6 is the 2nd retaining structure shown in FIG. It is sectional drawing by the VI-VI line of the block for walls. As will be described later, the depth dimensions of the second retaining wall block and the first retaining wall block are the same in width, but the depth dimension of the former is larger than that of the latter. Furthermore, FIG.7 and FIG.8 is the top view and rear view which show an example of the block for water supply used for the retaining wall for vegetation which concerns on this invention, FIG. 9 is IX- of the block for water supply shown in FIG. It is sectional drawing by an IX line. 10 and 11 are a plan view and a rear view of the partition block used for the vegetation retaining wall according to the present invention, and FIG. 12 is a cross-sectional view taken along line XII-XII of the partition block shown in FIG. It is. Hereinafter, each of these blocks will be described in order.

  First, the first retaining wall block will be described.

  As shown in FIGS. 1 to 3, the first retaining wall block 1 has a rectangular front wall 10, a length shorter than the length of the front wall 10, and a height lower than the height of the front wall 10. A rectangular rear wall 11 having a vertical dimension is connected by side walls 12 and 12 having a thick part and a thin part. The both side walls 12 and 12 have a thick wall portion connected to the front wall 10 and a thin wall portion connected to the rear wall 11, and the inner surfaces of the both side walls 12 and 12 are flush with each other. Accordingly, the outer surfaces of the side walls 12, 12 are relatively convex on the front wall 10 side and relatively concave on the rear wall 11 side.

  The height dimension of the thick wall portions of the side walls 12 and 12 is substantially the same as the height dimension of the front wall 10. A semi-cylindrical joining convex portion 13a is fitted on the side surface of one joining portion 13 which is both thick portions, and a joining convex portion 13a is fitted on the side surface of the other joining portion 13 in a semi-cylindrical shape. Are respectively provided with a bonding recess 13b.

  On the other hand, the thin wall portion extending from the joint portions 13 and 13 which are the thick portions of the side walls 12 and 12 toward the rear wall 11 has the same height as the joint portions 13 and 13 from the joint portions 13 and 13 as appropriate. The upper dimensions 12a and 12a of the side walls 12 and 12 are comprised by the height dimension. In addition, the rear wall 11 side of the thin-walled upper steps 12a and 12a is lower than the height of the joints 13 and 13 and lower than the height of the rear wall 11. 12b.

  Further, fixing holes 16 and 16 are provided at appropriate positions on the upper surfaces of the joint portions 13 and 13 of the both side walls 12 and 12 described above. The fixing holes 16 and 16 have anti-skid pieces 18 (for example, described later) FIG. 13) is fitted and fixed at one end.

  Next, the second retaining wall block will be described.

  As shown in FIGS. 4 to 6, the second retaining wall block 2 has a rectangular cylindrical shape that is substantially the same shape as the first retaining wall block 1 described above (see FIGS. 1 to 3). The width dimension and height of the second retaining wall block 2 are substantially the same as the width dimension and height of the first retaining wall block 1, but the depth dimension of the second retaining wall block 2 is the same as that of the first retaining wall block 1. It is larger than the depth dimension of the block 1 for walls. 4 to 6, portions corresponding to the portions illustrated in FIGS. 1 to 3 are denoted by corresponding reference numerals.

  That is, the dimensions of the lower step portions 22b, 22b of the side walls 22, 22 of the second retaining wall block 2 are substantially the same as the dimensions of the lower step portions 12b, 12b of the side walls 12, 12 of the first retaining wall block 1 described above. Although the same, the length dimension of the upper step portions 22a, 22a of the side walls 22, 22 of the second retaining wall block 2 is the same as that of the upper step portions 12a, 12a, 12 of the side walls 12, 12 of the first retaining wall block 1 described above. It is longer than the length of 12a. Further, the joint portions 23 and 23 which are the thick portions of the both side walls 22 and 22 of the second retaining wall block 2 are positioned at substantially the center portion in the longitudinal direction of the upper step portions 22a and 22a of the both side walls 22 and 22. Thus, a thin portion is formed between the joint portions 23 and 23 of the side walls 22 and 22 and the front wall 20.

  Further, on the bottom surfaces of the side walls 22 and 22 and in the vicinity of the front wall 20, fitting holes 27 and 27 for fitting the other ends of the anti-skid pieces described later are provided.

  Next, the water supply block will be described.

  As shown in FIGS. 7 to 9, the water supply block 3 has a front wall 30, a rear wall 31, and both side walls 32, 32 erected on the peripheral edge of a rectangular bottom wall 34. The height dimension is lower than the height dimension of the front wall 30. In addition, an intermediate wall 35 is installed between a substantially central portion of the front wall 30 and a substantially central portion of the rear wall 31.

  Further, both side walls 32, 32 whose inner surfaces are flush with each other have a relatively thin thickness dimension from the front wall 30 toward the rear wall 31 and have a predetermined height dimension equal to the height dimension of the front wall 30. After extending by a distance, the upper wall portion 32a is formed by extending a little with a relatively thick thickness and the same height as the front wall 30, and the rear wall 31 with the same thickness. A lower step portion 32b is formed by extending to the outer surface position of the rear wall 31 with the same height dimension as the stepped portion through a stepped portion having the same height as the height. Therefore, projecting portions 33, 33 projecting outward from the thin portion on the front wall 30 side are formed in the thick portion where the thicknesses of both side walls 32, 32 are relatively thick.

  The outer dimension between the thin portions of the side walls 32, 32 is slightly smaller than the inner dimension between the side walls 12, 12, 22, 22 of the first retaining wall block 1 and the second retaining wall block 2 described above. . On the other hand, the outer dimension between the protrusions 33, 33 of the side walls 32, 32 is between the side walls 12, 12, 22, 22 of the first retaining wall block 1 and the second retaining wall block 2 described above. As will be described later, the protrusions 33 and 33 of the both side walls 32 and 32 are formed at lower stages of the side walls 12, 12, 22 and 22 of the first retaining wall block 1 or the second retaining wall block 2. 12b, 12b, 22b, and 22b are mounted. At this time, the protrusions 33 and 33 are brought into contact with the upper step portions 12a, 12a, 22a and 22a of the side walls 12, 12, 22, and 22 of the first retaining wall block 1 or the second retaining wall block 2. .

On the other hand, the front wall 30 described above has a plurality of (for example, four) water supply holes 37, 37,... For penetrating the inner and outer surfaces of the front wall 30 and supplying the water stored therein. The front wall 30 is opened at an appropriate distance in the width direction. The water outlet that opens to the outer surface of the front wall 30 of the water supply hole 37 is located in the vicinity of the upper end of the front wall 30, and the water intake that opens to the inner surface of the front wall 30 of the water supply hole 37 corresponds to the bottom wall 34. It is located at almost the same height as the inner surface (bottom surface). That is, the height position of the water discharge port of the water supply hole 37 is higher than the height position of the water intake port of the water supply hole 37. The water supply hole 37 has a substantially megaphone shape whose inner diameter gradually decreases from the upper part on the outer surface side to the lower part on the inner surface side of the front wall 30, and a medium that causes capillary rise such as earth and sand during construction work as described later. The water filled in the water supply hole 37 by natural fall and stored in the water is pumped up from the water intake port of the water supply hole 37 to the water discharge port by the capillary rise by the medium, and discharged from the water discharge port. On the upper surface of the wall 30, a plurality of (three in FIG. 7 and FIG. 8) recesses 30 a, 30 a, 30 a over the entire region in the thickness direction of the front wall 30 are arranged at appropriate intervals in the longitudinal direction of the front wall 30. It is provided and functions as a water passage and an air passage.

  By the way, the height of the rear wall 31 described above is substantially the same as the height of the bottom of the water outlet of the water supply hole 37 provided in the front wall 30. If the height of the rear wall 31 is made higher than the height of the bottom of the water outlet, the water temporarily accumulated in a portion higher than the bottom of the water outlet in the water supply block 3 is short due to the water pressure of this portion. In time, the water is discharged from the water supply hole 37 until it reaches the height of the bottom of the water outlet. Therefore, even if the height of the rear wall 31 is made higher than the height of the bottom of the water outlet, the substantial water storage amount of the water supply block 3 does not increase. On the other hand, when the height of the rear wall 31 is substantially the same as the height of the bottom of the water discharge port as in this embodiment, it is necessary to manufacture the water supply block 3 without reducing the substantial water storage amount. Raw materials can be reduced, and manufacturing costs are low. Further, since the height of the rear wall 31 is made lower than the height of the front wall 30 in this way, the rainwater excessively supplied to the water supply block 3 can overflow from the rear wall 31 to the outside. Accordingly, the water supply block 3 can supply water to the outside from the rear wall 31 by the overflow and to the outside from the front wall 30 through the water supply hole 37 described above.

  Next, the partition block described above will be described.

  As shown in FIGS. 10 to 12, the partition block 4 has trapezoidal columnar side walls 42, 42 connected to both edge portions of the lateral wall plate-like rear wall 41 to form a substantially U shape in plan view. The height of the rear wall 41 is smaller than the height of the side walls 42, 42. As a result, the rolling operation described later can be performed easily and reliably. In addition, a plurality of (two in FIG. 8) concave portions 41 a and 41 a are provided on the bottom surface of the rear wall 41 at appropriate intervals in the longitudinal direction of the rear wall 41 over the entire region in the thickness direction of the rear wall 41. A belt for lifting the partition block 4 can be inserted into the recesses 41a and 41a.

  Using the blocks described above, the retaining wall for vegetation according to the present invention is constructed as follows.

  FIG. 13 is a side sectional view showing the structure of the upper part of the retaining wall for vegetation according to the present invention. In the figure, J is a natural ground where the retaining wall for vegetation is constructed. The first retaining wall blocks 1, 1,... Of n stages are stacked in a staircase shape following the slope of the natural mountain J, and one or a plurality of predetermined stages ((n-1) in FIG. 13). The plant P, which is a relatively short tree, can be grown on an appropriate number (one in FIG. 13) of first retaining wall blocks 1 in the stage).

  That is, following the slope of the natural ground J, the plurality of first retaining wall blocks 1 (1, 1,...) In the (n−2) stage are juxtaposed in the lateral direction. Next, in the fixing holes 16 (16, 16,...) Of the side walls 12 (12, 12,...) Of the first retaining wall blocks 1 (1, 1,. 18 (18, 18,...) Is inserted and fixed in such a manner that the other end protrudes from the fixing hole 16 (16, 16,...). And, in each first retaining wall block 1 (1, 1,...), An intermediate material F such as crushed stone having an appropriate size (for example, a diameter of about 20 mm to 40 mm) is used. 1 (1, 1,...), A position slightly higher than the height position of the rear wall 11, that is, the height position of the lower step portion 12 b of the side wall 12 (12, 12,...), And the same height position. Until the first back wall material R such as crushed stone is introduced between each first retaining wall block 1 (1, 1,...) And the natural ground J, the intermediate material F and the back material R Roll the surface.

  After constructing the (n-2) th stage in this way, the plurality of first retaining wall blocks 1 (1, 1,...) Of the (n-1) th stage are connected to the front walls 10 (10, 10). ,...) Are juxtaposed in the lateral direction along the slope of the natural ground J so that the portions near both ends of the anti-skid pieces 18 (18, 18,. In the fixing hole 16 (16, 16,...) Of each side wall 12 (12, 12,...) Of the first retaining wall block 1 (1, 1,. Insert and fix as before.

  Of these first retaining wall blocks 1 (1, 1,...), The home soil G is placed in a predetermined first retaining wall block 1 and the other first retaining wall blocks (1, 1,...). To the lower portion 12b (12b, 12b,...) Of the side wall 12 (12, 12,...) Of each first retaining wall block 1 (1, 1,...). After putting the backing material R between the first retaining wall blocks 1 (1, 1,...) And the natural ground J up to the same height position, Compress the surface.

  In addition, in the first retaining wall block 1 into which the (n-1) -th stage soil G is introduced, the (n-2) -th intermediate insertion material F and the back are inserted before the soil G is introduced. A crushing material (not shown) that closes gaps (eyes) existing on the surface of the insert R is spread in advance. However, when the intermediate material F having a diameter of approximately 12 mm to 20 mm is used, a crushing material is not necessary.

  Next, the water supply block 3 is placed between the lower steps 12b (12b) of the side walls 12 (12) forming the pair of the first retaining wall blocks 1 into which the customer soil G has been introduced. And in this block 1 for 1st retaining walls, while filling water supply block 3 to the height position of the front wall 30 of the block 3 for water supply, it is the same height position as this. Up to this point, the backing material R is introduced between the water supply block 3 and the natural ground J, while the other first retaining wall blocks (1, 1,...) Are for each first retaining wall. After inserting the insert material F and the backing material R to the height position of the front wall (10, 10,...) Of the block (1, 1,...), The respective surfaces are rolled.

  At this time, as shown in FIG. 13, since the rear wall 11 of the first retaining wall block 1 is lower than the lower step portion 12b (12b) of the side wall 12 (12), the side wall 12 (12 of the first retaining wall block 1). ) A gap is formed between the water supply block 3 placed above and the rear wall 11 of the first retaining wall block 1.

  After the construction of the (n-1) th stage in this way, the plurality of first retaining wall blocks 1 (1, 1,...) Of the nth stage are respectively connected to the front walls 10 (10, 10,. ..)) Are juxtaposed in the lateral direction along the slope of the natural ground J so that the portions in the vicinity of both ends abut against the anti-sliding pieces 18 (18, 18,...). And in the same way as the above-mentioned (n-2) step, the intermediate insert F and the back insert R are constructed.

  After the construction of the n-th first retaining wall block 1 (1, 1,...) Is completed in this manner, the (n-1) -th water supply block 3 is disposed. The construction of the retaining wall for vegetation is carried out by introducing the soil G to the height position of the front wall 10 of the first retaining wall block 1 between the front wall 10 of the block 1 and the water supply block 3. To complete. And plant P is planted in this land G.

  At this time, the customer soil G introduced into the first retaining wall block 1 enters the water supply hole 37 of the water supply block 3 by natural fall and is filled there. An appropriate gap is formed in the customer soil G filled in the water supply hole 37, and a capillary rise is caused by this gap. Therefore, the water stored in the water supply block 3 is supplied from the water supply hole 37 to the outside soil G by the capillary rise without inserting another member that causes the capillary rise into the water supply hole 37. Can do. Further, since the soil G introduced into the first retaining wall block 1 is filled into the water supply hole 37 by natural fall, the construction work of the water supply block is easy.

  In such a vegetation retaining wall, since the soil G is filled in almost the entire region in the first retaining wall block 1, the volume of the soil G required for the growth of trees having a relatively low height. Is secured. Moreover, since the customer soil G is loaded on the inner filling material F and the backing material R inside and outside the first retaining wall block 1 at the (n-2) th stage, the inside of the filling material F and the backing material R Passing through the surplus water in the land G is well eliminated. As a result, aeration to the soil G is promoted, a sufficient amount of oxygen required for the growth of the plant P can be obtained, and root rot is prevented.

  Further, the rain water that has fallen on the n-th first retaining wall block 1 passes through the interstitial material F in the first retaining wall block 1, and the (n-1) -th first retaining wall. It flows into the backing material R of the water block 1 and the water supply block 3. As described above, since the rear wall 31 of the water supply block 3 is lower than the front wall 30, rainwater exceeding the capacity of the water supply block 3 exceeds the rear wall 31 of the water supply block 3 and the backing material R To overflow. At this time, since a gap is formed between the water supply block 3 and the rear wall 11 of the first retaining wall block 1 that supports the water supply block 3, the (n-1) -th first retaining wall block 1 The rainwater flowing into the backing material R and the rainwater overflowing from the water supply block 3 are supplied to the customer soil G of the first retaining wall block 1 through the gap.

  On the other hand, the rainwater stored in the water supply block 3 is gradually supplied from the water supply hole 37 into the outer land G by capillary rise. Further, moisture from the slope of the natural ground J is also supplied into the customer soil G through the (n-1) -th stage backing material R. Therefore, since the rainwater stored in the water supply block 3 is gradually supplied to the land G, the rainwater is sufficiently supplied without waste, even when there is no rainfall over a long period of time, The death of the plant P is prevented without watering.

  In addition, in the vegetation retaining wall shown in FIG. 13, the first retaining wall block 1 in which only one soil soil G is introduced in the (n−1) stage is constructed. Not limited to this, the soils G, G,... May be introduced into any number of first retaining wall blocks 1, 1,. In this way, it is possible to grow the plants P, P,... By introducing the soils G, G,... Into the first retaining wall blocks 1, 1,. Since weeds and the like are difficult to grow on the first retaining wall blocks 1, 1,... That are not charged, the landscape can be maintained well and the labor and cost required for processing the weeds can be reduced.

  Moreover, in the vegetation retaining wall according to the present embodiment, the side wall 12 of the first retaining wall block 1 is formed into a stepped shape by forming an upper step portion 12a and a lower step portion 12b. Although the water supply block 3 is lying on the lower step portions 12b and 12b, the present invention is not limited to this, for example, both side walls are flush with the upper ends without providing the lower step portions 12b and 12b. Support protrusions or support grooves that support the water supply block 3 may be formed on the inner surfaces of both side walls, and an engagement portion that engages with the support protrusions or support grooves may be provided in the water supply block 3. Furthermore, the height dimension of the rear wall 11 of the first retaining wall block 1 may be the same as the height dimension of the front wall 10.

  FIG. 14 is a side sectional view showing the structure of the upper portion of another vegetation retaining wall according to the present invention. By using the second retaining wall block 2 described above, a medium-length tree is grown. To get. In the figure, parts corresponding to those shown in FIG. 13 are denoted by the same reference numerals and description thereof is omitted.

  (N-2) Slip prevention in the fixing holes 16 (16, 16,...) Of the side walls 12 (12, 12,...) Of the first retaining wall blocks 1 (1, 1,. After the pieces 18 (18, 18,...) Are inserted and fixed in the same manner as before and the first retaining wall block 1 (1, 1,. The (n-1) -th second retaining wall block 2 is stacked on the first retaining wall block 1 such that both front walls 10 and 20 overlap. At this time, the other end of the anti-sliding piece 18 (18) fixed to the first retaining wall block 1 directly below is fitted into the fitting hole 27 (27) of the second retaining wall block 2, and the second The sliding of the retaining wall block 2 is prevented. The plurality of second retaining wall blocks 2, 2,... May be juxtaposed in the lateral direction or at an appropriate distance.

  Note that the front wall 20 of the (n-1) -th second retaining wall block 2 stacked on the (n-2) -th first retaining wall block 1 is the first retaining wall block. The second retaining wall block 2 may be constructed or the second retaining wall block 2 may be designed so as to be located slightly on the rear wall 11 side from the one front wall 10. The amount of deviation between the front walls 10 and 20 is such that there is no hindrance to the construction of the retaining wall for vegetation.

  Further, at the (n-1) stage, the first retaining wall block (not shown) is juxtaposed in a stepped manner as described above in the portion other than the second retaining wall block 2 disposed, and the same as before. Fill with a filling material.

  On the other hand, in the same manner as the vegetation retaining wall described above, the anti-slip piece is placed in the fixing holes 26 (16, 16,...) Of the second retaining wall block 2 and the first retaining wall block (1, 1,...). 18 (18, 18,...) Is inserted and fixed in the same manner as before, the second retaining wall block 2 is filled with the soil G, and both side walls 22 (22) of the second retaining wall block 2 are filled. On the lower step portion 22b (22b), the water supply block 3 is placed, and the water supply block 3 is filled with the filling material F, so that the rear wall 21 of the second retaining wall block 2 and the ground mountain J The backing material R is filled in between. Thereafter, the first retaining wall blocks 1 (1, 1,...) In the n-th stage are, as before, the portions in the vicinity of both ends of each front wall 10 (10, 10,. , 18,..., And is juxtaposed in the lateral direction following the slope of natural ground J. And in the same way as the above-mentioned (n-2) step, the intermediate insert F and the back insert R are constructed.

  Then, the plant P, which is a medium-length tree, is vegetated on the soil G of the second retaining wall block 2. Since the second retaining wall block 2 has a larger volume than the first retaining wall block 1, it is possible to sufficiently grow plants P that require a larger soil volume for growth. Moreover, sufficient oxygen and water required for the growth of the plant P can be supplied as before.

  On the other hand, as shown in FIG. 14, since the depth dimension of the second retaining wall block 2 is larger than the depth dimension of the first retaining wall block 1, the rear wall 21 of the second retaining wall block 2 It is located on the natural ground J side from the rear wall 11 of the 1 retaining wall block 1, and a part of the customer soil G in the second retaining wall block 2 is also the rear wall of the first retaining wall block 1 immediately below. 11 extends to the natural mountain J side. The roots of the plant P can be extended into the backing material R of the first retaining wall block 1 directly below through the customer soil G in the second retaining wall block 2, and sufficient root elongation is ensured. The

  In the vegetation retaining wall according to the present embodiment, the side wall 22 of the second retaining wall block 2 has an upper step portion 22a and a lower step portion 22b to form a stepped shape. Although the water supply block 3 is lying on the lower step portions 22b and 22b of the present invention, the present invention is not limited to this, for example, both side walls are flush with the upper ends without providing the lower step portions 22b and 22b described above, Support protrusions or support grooves that support the water supply block 3 may be formed on the inner surfaces of the both side walls, respectively, and an engagement portion that engages with the support protrusions or the support grooves may be provided on the water supply block 3. Further, the height dimension of the rear wall 21 of the second retaining wall block 2 may be the same as the height dimension of the front wall 20.

  FIG.15 and FIG.16 is a sectional side view which shows the structure of the upper part part of the other retaining wall for vegetation which concerns on this invention, and has made the soil volume of the soil further larger. In both figures, parts corresponding to those in FIG. 15 are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 15 and 16, the partition block 4 described above is formed on the lower step portion 12 b (12 b) of the both side walls 12 (12) of the first retaining wall block 1 immediately below the second retaining wall block 2. The rear wall 11 of the first retaining wall block 1 and the rear wall 41 of the partition block 4 are substantially at the same position.

  In the case shown in FIG. 15, the first retaining wall block 1 immediately below is inserted to the height of the lower step portion 12 b (12 b) of the side wall 12 (12) of the first retaining wall block 1. F and the backing material R were introduced and placed so that both side walls 42 (42) of the partition block 4 were positioned on the lower step portion 12b (12b) of the side wall 12 (12) of the first retaining wall block 1. After that, in the first retaining wall block 1, the guest soil G is put in, and the backing material R is put in between the partition block 4 and the ground mountain J, respectively, and the construction is performed by rolling the surfaces thereof. .

  Further, in the case shown in FIG. 16, the first retaining wall block 1 immediately below is located up to the height of the lower step portion 12b (12b) of the side wall 12 (12) of the first retaining wall block 1. G and backing material R were introduced and placed so that both side walls 42 (42) of the partition block 4 were positioned on the lower step portion 12b (12b) of the side wall 12 (12) of the first retaining wall block 1. After that, in the first retaining wall block 1, the guest soil G is put in, and the backing material R is put in between the partition block 4 and the ground mountain J, respectively, and the construction is performed by rolling the surfaces thereof. .

  As a result, the water and oxygen required for the growth of the plant P can be sufficiently supplied as before, while the volume of the guest soil G is further increased, so that the plant P can be grown.

  Further, as described above, since the height of the rear wall 41 of the partition block 4 is smaller than the height of the side walls 42 (42), the rear wall 41 is moved by the movement of the compactor (plate). Without causing any trouble, the surface of the backing material R can be sufficiently compacted by the compactor.

  In the vegetation retaining wall according to the present embodiment, the side wall 12 of the first retaining wall block 1 has an upper step portion 12a and a lower step portion 12b, and has a stepped shape. Although the partition block 4 is lying on the lower step portions 12b and 12b of the twelve, the present invention is not limited to this. For example, the partition block 4 may be placed on the rear wall 11. Further, the both side walls of the first retaining wall block 1 are not provided with the lower step portions 12b and 12b described above, and the upper ends thereof are flush with each other, and support convex portions or support grooves for supporting the partition block 4 are formed on the inner surfaces of the both side walls. On the other hand, the partition block 4 may be provided with an engagement portion that engages with the support convex portion or the support groove. Further, the height dimension of the rear wall 21 of the second retaining wall block 2 may be the same as the height dimension of the front wall 20.

  In the present embodiment, the case where the box-shaped water supply block 3 is used has been described. However, the present invention is not limited to this, and as shown in FIG. 3a may be used. In such a water supply block 3a, a front wall 30a is erected on the front edge of the bottom wall 34a, and a plurality of water supply holes 37a (37a) penetrating the front wall 30a in the vicinity of the lower end of the front wall 30a. , 37a,... Such a water supply block a receives rainwater that has passed through the filling material F filled in the n-th first retaining wall block 1, and receives water from the water supply holes 37 a (37 a, 37 a,...). While being supplied to G, it can be supplied to the main soil G through the backing material R of the second retaining wall block 2 and the gap between the water supply block 3 a and the rear wall 21 of the second retaining wall block 2.

  In the present invention described in claim 1, a plurality of cylindrical retaining wall blocks each having both side walls provided between the front wall and the rear wall are provided side by side along the slope of the construction target, and in the vertical direction. In the retaining wall for vegetation constructed by stacking in a staircase shape, the retaining wall blocks are placed adjacent to each other in the vertical direction because the retaining wall blocks are placed at appropriate positions in one or more steps. Air is sufficiently supplied to the customer soil filled in the retaining wall block from between the retaining wall block and the retaining wall block.

  Between the both side walls of the retaining wall block into which the soil is introduced, a water supply block for supplying water to the soil is constructed. The water supply block receives rainwater and supplies it to the soil. And the customer's soil is filled in the substantially whole area | region enclosed with the block for retaining walls, and the block for water supply. Therefore, a sufficient volume of soil required for growing a tree having a relatively low height can be obtained.

  Further, a stone material is filled in substantially the entire area of the retaining wall block stacked immediately above the retaining wall block filled with the soil. Since the stone material has almost no water retaining ability, the rainwater is supplied to the land directly or through the water supply block with almost no trapping by the stone material filled in the retaining wall block directly above. As a result, even when a sufficient amount of soil for the growth of trees is filled, a sufficient amount of rainwater can be supplied to the entire soil and retained there, and it has been raining for a relatively long time. Even if it is not present, it is possible to prevent the plants planted in the soil from dying without watering.

  On the other hand, when a water supply block that can store rainwater is used, rainwater can be sufficiently retained throughout the soil, and the stored rainwater is gradually supplied from the water supply block to the soil. Even in the absence of water, it is possible to prevent the plants planted on the soil from dying without watering.

  By the way, since it is difficult for weeds to grow in the retaining wall block filled with stone, it is possible to maintain the landscape of the retaining wall for vegetation without performing laborious work such as weeding. .

  In the second aspect of the present invention, a plurality of cylindrical first retaining wall blocks each having both side walls provided between the front wall and the rear wall are provided side by side along the slope of the construction object, and In the vegetation retaining wall stacked stepwise in the direction, a cylindrical second retaining wall in which both side walls with dimensions longer than the length of both side walls of the first retaining wall block are laid between the front wall and the rear wall The front wall of the second retaining wall block is positioned on the front wall of the first retaining wall block or slightly less than the first retaining wall block on the appropriate first retaining wall block. The first retaining wall block and the second retaining wall that are adjacent to each other in the vertical direction are stacked so as to be positioned on the rear wall side, and the customer soil is put into the second retaining wall block. Air is sufficiently supplied from the space between the building blocks to the customer soil introduced into the second retaining wall block.

  A water supply block for supplying water to the soil is constructed between both side walls of the second retaining wall block. The water supply block receives rainwater and supplies it to the soil. And since the soil is filled in almost the entire area surrounded by the second retaining wall block and the water supply block, which has a larger volume and a larger planting area than the first retaining wall block, the medium-length tree Sufficient soil volume required for growth is obtained. Even when the second retaining wall block is filled with a sufficient amount of soil for growing trees, a sufficient amount of rainwater is supplied to the entire soil by the water supply block and held there. Even if there is no rainfall for a relatively long time, it is possible to prevent the plants planted in the soil from dying without watering.

  On the other hand, when a water supply block capable of storing rainwater is used, rainwater can be sufficiently retained in the entire soil, and the stored rainwater is gradually supplied from the water supply block to the soil in the second retaining wall block. Therefore, even if there is no rainfall for a long period of time, it is possible to prevent the plants planted on the soil from dying without watering.

  When the second retaining wall block is stacked on the first retaining wall block as described above, the rear wall of the upper second retaining wall block is more than the rear wall of the lower first retaining wall block. Therefore, the root of the plant that is in the back position and extends to the rear wall side of the second retaining wall block can further extend to the back side of the lower first retaining wall block.

  In this invention of Claim 3, it replaces with the said stone material in a part or all in the 1st retaining wall block which accumulated the 2nd retaining wall block, and a customer soil is in the 2nd retaining wall block. Therefore, the volume of the soil can be further increased, and the soil capacity required for growing a relatively tall tree can be ensured.

  On the other hand, since the second retaining wall block stacked thereon is carried on both side walls of the first retaining wall block, the soil is filled in the lower first retaining wall block. Even if it exists, the sinking of the block for the upper second retaining wall is prevented.

  In the present invention according to claim 4, the height of the rear wall of the first retaining wall block in which the second retaining wall blocks are stacked is lower than the height of the front wall. The weight of the block can be reduced, and the charging / rolling operation of the input material into the first retaining wall block and the charging / rolling operation of the backing material are facilitated. In addition, the region above the rear wall of the first retaining wall block is partitioned inside and outside by a partition block, and part or all of the region surrounded by the first retaining wall block and the partition block is filled with customer soil. Therefore, it is possible to prevent the outflow of the customer soil from outside and the inflow of the backing material into the customer soil, and secure a sufficient volume of customer soil. On the other hand, since the partition block is supported by the first retaining wall block, the partition block is prevented from sinking.

  In the present invention described in claim 5, since a gap is formed between the rear wall of the first retaining wall block and the partition block, rainwater that has permeated from above flows into the customer soil through this gap. . Thereby, a sufficient amount of water can be supplied to the land.

  In the present invention according to claim 6, on the upper surface of at least one side wall of the first retaining wall block, an anti-sliding piece for preventing sliding of the stacked second retaining wall block protrudes. Since this slip prevention piece is fitted in a recess provided on the bottom surface of the corresponding side wall of the second retaining wall block, the sliding of the second retaining wall block is prevented, while The construction for preventing the sliding is completed simply by stacking the second retaining wall block on the first retaining wall block so that the sliding prevention piece protruding from the block fits in the recess. Such construction work can be easily carried out.

  According to the seventh aspect of the present invention, since the stone material is filled in almost the entire area of the first retaining wall block stacked immediately above the second retaining wall block, 1 It is supplied to the customer's land directly or via a water supply block, with little being captured by the stone filled in the retaining wall block. Thus, even if the second retaining wall block or the second retaining wall block and the first retaining wall block immediately below are filled with a sufficient amount of land for growing trees, A sufficient amount of rainwater can be supplied to the entire land and kept there, and even if there is no rainfall for a relatively long time, the plants planted on the land will die without watering. It is prevented.

  By the way, in the first retaining wall block filled with stone, it is difficult for weeds to enter, so the landscape of the retaining wall for vegetation should be maintained without performing time-consuming work such as weeding. Can do.

Claims (7)

A plurality of cylindrical retaining wall blocks with both side walls installed between the front wall and the rear wall are arranged side by side along the slope of the construction target, and stacked vertically in a staircase shape. In the retaining wall for vegetation where you can put the soil inside to grow plants,
Retaining wall blocks filled with guest soil are placed at appropriate positions in one or more stages,
Between both side walls of the retaining wall block into which the soil is introduced, a water supply block is installed to supply water to the soil.
Guest soil is filled in almost the entire area surrounded by the retaining wall block and the water supply block,
A vegetation retaining wall characterized in that a stone is filled in substantially the entire area of the retaining wall block stacked immediately above the retaining wall block filled with the guest soil. A plurality of cylindrical first retaining wall blocks with both side walls erected between the front wall and the rear wall are provided side by side along the slope of the object to be constructed, and stacked vertically in a staircase pattern. In the retaining wall for vegetation where the soil can be grown by putting the soil into the interior,
A cylindrical second retaining wall block in which both side walls having dimensions longer than the length of both side walls of the first retaining wall block are laid between the front wall and the rear wall is provided on an appropriate first retaining wall block. The front wall of the second retaining wall block is stacked so that it is at the position of the front wall of the first retaining wall block or slightly behind it at the rear wall side of the first retaining wall block. ,
Between both side walls of this second retaining wall block, there is a water supply block for supplying water to the soil.
Nearly the entire area surrounded by the second retaining wall block and the water supply block is filled with soil,
A retaining wall for vegetation characterized in that a stone is filled in the first retaining wall block in which the second retaining wall blocks are stacked. A part of the first retaining wall block in which the second retaining wall blocks are stacked or a part of the first retaining wall block communicates with the customer soil in the second retaining wall block instead of the stone. Filled,
The vegetation retaining wall according to claim 2, wherein a second retaining wall block stacked thereon is carried on both side walls of the first retaining wall block. The height of the rear wall of the first retaining wall block in which the second retaining wall blocks are stacked is lower than the height of the front wall;
A partition block that divides the inside and outside in a region higher than the rear wall of the first retaining wall block is supported by the first retaining wall block;
The vegetation retaining wall according to claim 3, wherein a part or all of an area surrounded by the first retaining wall block and the partition block is filled with the guest soil.   The vegetation retaining wall according to claim 4, wherein a gap is formed between the rear wall of the first retaining wall block and the partition block.   On the upper surface of at least one side wall of the first retaining wall block, an anti-sliding piece for preventing sliding of the stacked second retaining wall block protrudes. The vegetation retaining wall according to any one of claims 2 to 5, wherein the vegetation retaining wall is fitted in a recess provided in a bottom surface of a corresponding side wall of the retaining wall block. The vegetation retaining wall according to any one of claims 2 to 6, wherein substantially the entire region in the first retaining wall block stacked immediately above the second retaining wall block is filled with stone.

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