JPH0754349Y2 - Concrete block for retaining wall construction - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for retaining wall construction used for retaining soil such as slopes of slopes, slopes, embankments of roads and cut slopes.

[0002]

2. Description of the Related Art Conventionally, there are retaining wall construction blocks shown in FIGS. 11 and 12 for retaining soil such as slopes of hillsides, slopes, embankments of roads, and cut slopes. That is, the block main body B is molded from concrete into a substantially L-shaped cross section by a front wall portion 2 ′ inclined rearward at a desired angle and a bottom wall portion 5 ′ formed continuously with the front wall portion 2 ′. Is.

In order to retain the earth using the concrete block for constructing the retaining wall, the foundation K such as crushed stone, ready-mixed concrete, etc. is first sloping on a hillside, slope, road embankment, cut slope, etc. It is formed on the front surface of the soil to be retained T to be fastened, and then the block body B is continuously arranged in parallel on the upper surface of the foundation portion K. After that, the back template Q made of wood or steel
Is attached to the open portion on the back surface of the block body B to close the open portion on the back surface of the block body B. Then, the block body B is filled with the crushed stone 6 as the earth material N for inclusion,
Further, the earth and sand 6'as the backfilling earth material U is charged and packed between the rear surface of the rear template Q and the soil T to be retained (see FIG. 11). Then, after the back-filled soil material U packed in the block body B was compacted, the rear template Q was removed from the back surface of the block body B to retain the soil T (see FIG. 12).

[0004]

[Problems to be Solved by the Invention] However, FIG.
Also, the conventional concrete block for retaining wall construction shown in FIG. 12 prevents the spilling of the earth filling material N when the earth filling material N is packed in the block body B, and the crushed stone 6 of the earth filling material N is crushed. By supporting the rear part (a substantially triangular portion surrounded by the imaginary line B) of the block main body B in the rearward and downward directions to stabilize the laying position of the block main body B. The plate Q must be attached to a predetermined position behind the block body B, but the insertion work and the positioning work have not been easy. Therefore, it takes a lot of time to fill the block body B with the earth filling material N.

Moreover, the rear template Q may be pulled out from the block body B as shown in FIG. 12 after the block body B is laid on the laying site. In this case, as shown in FIG. 11, the rear portion of the block body B is supported by supporting the rear portion (the substantially triangular portion surrounded by the imaginary line a ') of the crushed stone 6 of the soil filling material N packed in the block body B. The spillage is prevented, and the rear template Q for stably laying the block body B by the rearward and downward load of the rear portion of the crushed stone 6 is removed upward, so that the supporting surface disappears. Since the factors such as the grain size, weight, quality, strength, and water retention property of the ground clay material N such as the crushed stone 6 and the back ground soil material U such as the earth and sand 6'are different from each other, the ground soil material N in the block body B is different. Collapses to the U-side soil material U side. Therefore, since there is no rear template Q that receives the load of the rear portion of the crushed stone 6 toward the back side and the lower side of the block body B, the crushed stone 6 collapses and the block body B inclines or falls and becomes unstable. , The slope of the hillside,
It was not possible to sufficiently secure soil retention of the soil to be retained T such as sloping ground or road embankment, and there was a disadvantage that the retaining wall constructed by continuously arranging the block bodies B in parallel collapsed.

In view of the above, the present invention makes it possible to easily and surely perform the filling work of the potting earth material to be packed in the block body to save the labor of laying the block body, and the block body may be inclined or fallen. The purpose of this method is to lay it stably, to finish it structurally robustly, and to securely hold the soil to be retained.

[0007]

In view of the above problems, the present invention is capable of receiving the earth pressure of the front wall portion and the soil to be retained and is inclined at least a desired angle rearward to face the front wall portion and face the front wall portion. Portion, a rear wall portion provided substantially in the same length, a side wall portion provided substantially opposite to the left and right end edges of the front wall portion and the rear wall portion at about 1/4, and a bottom plate portion covering the lower portion. The first accommodating cavity part that can be filled with the earthen material is provided at the center between the side walls between the side walls, and the second and third accommodating cavity parts that are open to the outside through the side wall parts. A first block main body is formed in the left and right insides of the accommodation cavity, and a notch opening is formed in the rear wall portion so that a partition plate can be inserted and removed in a width substantially corresponding to the side wall portions. I adopted the means.

[0008]

[Operation] The block main body is continuously laid along the landslide slope, sloped land, or soil to be filled such as road embankment. Then, the potting material is packed into the accommodating cavity of the lower block body in which the notch opening on the back surface is covered with a partition plate. The upper block body is assembled on the lower block body laid in this way. After that, the back of the built-up block main body is packed with backfill soil material to retain soil such as slopes on slopes, slopes, and road embankments.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a block main body formed of concrete with reinforcing bars, for example.
Is a front wall portion 2 and a rear wall portion 3 which are arranged substantially opposite to each other in a state of being inclined rearward at a desired angle θ on the side surface, and to the left and right between the front wall portion 2 and the rear wall portion 3. It is formed by side wall portions 4 provided substantially opposite to each other and a bottom plate portion 5 covering the lower side. In addition, the block body 1 has crushed stones 6 in the approximate center inside.
The entire shape is molded into a substantially bottomed box shape so as to have the first accommodating cavity portion 7 that can be filled with the soil material N as described above.

The inclination angles of the front wall portion 2 and the rear wall portion 3 are, for example, as shown in the figure, the heights of the front wall portion 2 and the rear wall portion 3 when the bottom plate portion 5 is installed substantially horizontally. H,
When H'is approximately 1 m, the lower edge of the rear wall 3 is approximately 0.3
Approximately m from the state of being located in the front part, an angle is made so as to incline. As will be described later, when increasing the stacking height of the block main body 1 according to the difference in the site situation, the inclination angle of each block main body 1 to be stacked is set to be a gentle inclination so that It is also possible to mount the whole on the back side with a gentler slope than the one shown in the figure to increase the stabilization.

The length L of the front wall portion 2 may be substantially the same as the length L'of the rear wall portion 3 or the length L'of the rear wall portion 3.
By forming the length L of the front wall portion 2 slightly shorter than that of the front wall portion 2, as shown in FIG. 7, a plurality of block main bodies 1 can be used in the field situation such as slopes of slopes, slopes, embankments of roads, and cut slopes. In accordance with the difference between the two, the bases are continuously laid with a desired curvature equal to or larger than the minimum curvature R at the bases thereof.

The side walls 4 and 4 arranged on the left and right of the block body 1 are installed at positions, for example, about 1/4 L from the left and right edges of the front wall 2 and the rear wall 3, or about 1.
About / 4L ', by being provided substantially opposite to the back,
In the block main body 1, the first storage cavity portion 7 is substantially centered and second and third storage cavity portions 7A and 7B are formed on the left and right sides thereof. Then, the second and third accommodation cavity portions 7A, 7
B is on the left and right of one block body 1 as shown in FIGS.
When the block main bodies 1 and 1 are butted against each other so as to lay a plurality of block main bodies 1 continuously in the lateral direction, a combined storage cavity portion including second and third storage cavity portions 7A and 7B. By forming 7'and 7 ', it is possible to pack an internal soil material N such as crushed stone 6. At this time, the installation positions of the side walls 4 and 4 from the left and right edges of the front wall portion 2 and the rear wall portion 3 to about 1 / 4L or 1 / 4L 'are examples, and the installation positions thereof are illustrated. You can freely change the distance.

Reference numeral 8 denotes a thick wall slope portion for reinforcement provided at an intersection of the side wall portions 4 and 4 with respect to the front wall portion 2 and the rear wall portion 3. By providing the thick wall slope portion 8, The side walls 4 and 4 are provided with strength such as compression and tension, particularly to the front wall 2 and the rear wall 3.

Reference numeral 9 denotes a partition plate which is removably inserted in a substantially U-shaped cutout opening 3A provided in the rear wall portion 3. The cutout opening 3A is located above and to the left and right of the partition plate 9. engaging projections 9A which is inserted detachably in the left and right locking recesses 3A ₁ provided inside, 3A in _1, 9A are formed.

Reference numeral 9B is an engaging protrusion provided on the lower edge of the partition plate 9, and the engaging protrusion 9B is also provided with several engaging recesses 5A provided on the bottom plate 5 in the cutout opening 3A. ，
It becomes detachable within 5A.

Reference numeral 9C is a drainage hole provided in the partition plate 9 in a desired number, and the drainage hole 9C is a backwater contained in the backfill material U and the soil T to be packed in the back surface of the partition plate 9. To flow into the crushed stone 6 as the embedding earth material N packed in the first accommodating cavity portion 7 in the block body 1 to reduce the water pressure on the block body 1 at the back surface. .

Reference numeral 4A denotes a substantially rhombic drainage hole provided in the side plates 4 and 4. The drainage hole 4A separates the backwater generated on the back-filling earth material U and the soil T on the back surface of the block body 1 from each other. Through the hole 9C provided in the plate 9, the first of the block body 1
This is for introducing the water into the accommodation cavity portion 7 of No. 1 and further draining the back surface water thereof in the lateral direction within the block body 1, that is, into the second and third accommodation cavity portions 7A and 7B.

Reference numeral 5B is a drain hole having a substantially circular shape provided in the bottom plate portion 5 of the block body 1, and this drain hole 5B is for draining the back surface water of the block body 1 downward.

Drainage holes 9C provided in the partition plate 9, drainage holes 4A, 4A provided in the side plates 4 and 4, and a bottom plate 5 are also provided.
All drainage from the drainage holes 5B provided in the block body 1
In particular, it reduces the water pressure due to the back surface water on the front wall portion 2, but at the same time, it helps to reduce the weight of the block body 1 made of concrete.
Convenient for transporting and loading into the laying site.

Reference numeral 2A is a drain hole provided in the front wall portion 2. The drain hole 2A is normally formed to be thin and closed, but the back surface water that has flowed into the block body 1 is saturated. Then, when the downward drainage from the drain hole 5B has reached its limit, the residual water is drained from the front of the front wall portion 2 by crushing and opening with a tool such as a hammer at the site when it is needed. It is for.

Numerals 4B and 4C are convex and concave portions provided in upper and lower edges of the side wall portions 4 and 4 of the block main body 1 at appropriate positions, for example, approximately in the center and in a substantially similar mountain shape. What is 4C? When the block main body 1 is assembled, the convex portion 4B at the upper edge of the block main body 1 located at the lower part is removably fit into the concave portion 4C provided at the lower edge of the block main body 1 located at the upper part. By doing so, when the block main bodies 1 are assembled, the vertical positioning of the block main bodies 1 with respect to each other is performed in the width direction (depth direction) to prevent the upper and lower block main bodies 1 from being displaced from each other.

Similarly, 2B are several recesses for drainage provided on the upper edge of the front wall portion 2 of the block main body 1. These recesses 2B, 2B are, when the block main bodies 1 are vertically stacked, By forming an opening between the block main body 1 located at the upper part and the lower edge of the front wall portion 2, the back water is drained to the front of the front wall portion 2.

Reference numeral 10 denotes a nut embedded in the upper and lower portions of the rear side of the rear wall portions 3 and 3 where the side walls 4 and 4 are located. The nut 10 is used when the block bodies 1 and 1 are vertically stacked. Further, the bolts 12 are screwed into the nuts 10 and 10 through the connecting plate 11 to connect the block main bodies 1 and 1 which are vertically stacked.

K is a foundation used when laying the bottommost block body 1, and the foundation K is formed by mixing gravel and ready-mixed concrete, for example.

An embodiment of the present invention has the above structure,
For example, in order to perform earth retaining such as slopes of slopes, slopes, embankments of roads, slopes of cut soil, etc., the foundation K is first formed on the slopes of slopes where the block body 1 is constructed.

Then, as shown in FIG. 2, the lowermost block main body 1 is continuously laid on the foundation K in a lateral direction (longitudinal direction).

At this time, in the case where the site condition of the foot (the lowest part) of the slope of the hillside of each block body 1 is a substantially linear state in a plane, the front wall portion 2 of the block body 1 is as shown in FIG. Lay in a substantially straight line. Further, in the case where the site situation such as the slope of the hill is a plane curved surface, the block main body 1 can be continuously laid with a desired curvature of the minimum curvature R or more as shown in FIG.

Thereafter, the rear wall portion 3 of the rear surface of the block body 1
Engaging projections 9 provided on the left and right sides of the partition plate 9 in the locking recesses 3A ₁ , 3A ₁ provided on the left and right sides of the notch opening 3A provided on the
Locking recesses 5A, 5 provided on the bottom plate 5 with engaging projections 9B, 9B provided on the lower edge of the partition plate 9 while engaging A, 9A.
By engaging the inside of A with the notch opening 3A, the partition plate 9
Can be accurately positioned and covered with a simple handling operation.

In this way, the first accommodating cavity 7 in the block body 1 in which the notch opening 3A is covered by the partition plate 9 and the adjacent block bodies 1, 1 collide with each other so that the block body 1 is accommodated. As the embeddable soil material N in the two left and right combined storage cavities 7'formed by the second and third storage cavities 7A and 7B provided on both the left and right sides of the cavity 7. For example, crushed stone 6 is packed. At this time, since the notch opening 3A provided in the rear wall portion 3 of the back surface of the block body 1 is covered with the partition plate 9, the partition plate 9 prevents the crushed stones 6 from spilling to the rear surface side of the block body 1. By supporting the rear part of the crushed stone 6 of the soil material N in the ground (substantially triangular portion surrounded by the imaginary line a), the block body 1 as a leaning retaining wall is stably laid under the load in the back direction and downward. To be done.

If the soil quality of the slope of the retained soil T such as a hillside slope, sloped land, or road embankment is poor and easily collapses, or if the masonry height of the block body 1 is high and unstable, 2. The synthetic storage cavities 7'and 7'consisting of the third storage cavities 7A and 7B are filled with concrete clay N, and then concrete is filled into the concrete clay N to solidify and block. The weight of the main body 1 can be increased. As a result,
The crushed stones packed in the left and right composite housing cavities 7 ', 7'except for the crushed stones 6 packed in the first housing cavity 7 are the block main bodies 1 that are continuously arranged in parallel. Since 6 becomes an aggregate of concrete and is integrated and the load increases, the block main body 1 to be built receives the earth pressure from the soil T to be retained and the water pressure of the back surface water, and the block main body 1 is locally It is possible to prevent the occurrence of a protrusion, a position shift phenomenon, and even a fall, and to lay it stably and with a strong structure.

After that, the block body 1 of the second stage is stacked on the front wall portion 2 of the block body 1 of the lowermost stage which is continuously laid, and as shown in FIG.

For this, the block body 1 located at the lowermost stage
Of the upper and lower block bodies 1 by fitting the convex portions 4B, 4B provided substantially at the center of the upper edges of the side walls 4, 4 into the concave portions 4C, 4C provided on the side walls 4, 4 of the block body 1 located at the upper stage. The mounting position of 1 in the width direction is determined to prevent displacement. Upper and lower block bodies 1 assembled in this way
The mutual mounting positions can be easily and accurately positioned even in the width direction, and they can be stacked in a state in which deviation is prevented. At this time, the block body 1 to be vertically stacked
As for the masonry pattern formed as a whole, the upper and lower block bodies 1 are piled up in a substantially parallel pattern by superimposing and superposing the upper and lower block bodies 1, or the upper block body and the lower block body 1 are stacked. 1 is the length L of the front wall 2
Of about 1/4 or about 1 / of the length L'of the rear wall portion 3
The front wall portion 2 and the rear wall portion 3 are stacked in a staggered pattern (see FIG. 8) in which the ends of the front wall portion 2 and the rear wall portion 3 are shifted by the length of 4.

Thereafter, the block main body 1 stacked on the second stage
The notch opening 3A on the back side of the block is covered with the partition plate 9 in the same manner as the above operation, and the first accommodating cavity portion 7 located substantially in the center of the block body 1 and the second and third accommodation cavity portions 7 located on the left and right sides thereof. A composite containing cavity 7'comprising the containing cavities 7A, 7B,
The crushed stone 6 as the soil material N is packed in 7 '(see FIG. 8).

Then, the nuts 10, 10 embedded in the rear wall portion 3 of the upper and lower block bodies 1 are overlapped with the bolt insertion holes of the plate 11 for connection, and the bolts 12 are inserted into the nut 10 to insert the upper and lower blocks. The main bodies 1 and 1 are connected via the plate 11 and the bolt 12 (see FIGS. 8 and 9).

In this way, the block bodies 1 are sequentially stacked up to the desired height on the front surface such as the slope of the hillside.

After that, the rear wall portion 3 of the rear surface of the block body 1
And the soil to be retained T such as the slope of the hillside are filled with the earth and sand 6 ′ as the backfilling soil material U to hold the soil to be retained T such as the slope of the hillside (see FIG. 8).

The overall load of the block main bodies 1 stacked vertically in a zigzag pattern or a zigzag pattern sequentially passes through the side wall portions 4 and 4 of the block main bodies 1 located in the downward stacking state to the foundation portion K. Therefore, the strain when the block bodies 1 are stacked is reduced, and the block bodies 1 can be stably and structurally assembled.

At this time, one block main body 1 to be assembled is opposed to the front wall portion 2 and the rear wall portion 3 which are substantially opposed to each other in the front and rear direction and are inclined in the rear direction in a crossing direction. Since the side wall portions 4 and 4 are arranged, and the bottom plate portion 5 is closed below to form a substantially bottomed box shape, it is possible to apply an external force or a load from any of the front, rear, left, and right directions. Also exhibits rigidity.

Therefore, the block main body 1 to be stacked is subjected to earth pressure from the soil to be retained T from the rear surface direction to the front, water pressure due to the back surface water contained in the soil to be retained T, earthquake, vibration, etc. The structure is robust in the front-back, left-right, and up-down directions against external force.

Further, since the partition plate 9 for closing the cutout opening 3A provided in the rear wall portion 3 of the block body 1 is provided with the drain hole 9A, the back surface water contained in the soil T to be retained is accommodated. The water pressure of the back surface water on the back surface of the block body 1 can be reduced by flowing into the crushed stone 6 in the cavity 7. As a result, there is no landslide or collapse of rainwater or groundwater contained in the retained soil T at the time of rainfall, and the block main body 1 can provide soil retention with a structurally strong structure.

The drain holes 4 are also formed in the side plates 4 and 4 which are substantially opposite to each other.
Since A and 4A are provided, the back surface water contained in the soil to be retained T enters the first accommodating cavity portion 7 in the block body 1 through the plurality of drain holes 9C provided in the partition plate 9. First, through the drainage holes 4A, 4A provided in the side plates 4, 4
The drainage is performed in the second and third storage cavity portions 7A and 7B located on the left and right of the storage cavity portion 7, that is, in the lateral direction of the block main body 1 that is continuously laid. Also, the bottom plate 5
Since the drain hole 5B is provided in the block main body 1
The back surface water that has flowed into the first housing cavity portion 7 therein is drained downward. In this way, the water pressure on the back surface of the block body 1 can be reduced by the gentle drainage of the back surface water.

Further, when the back surface water in the block main body 1 is saturated and the downward drainage becomes the limit, the lower edge of the upper block main body 1 is formed by the recesses 2B, 2B provided in the front wall portion 2. And the drainage hole 2 which is opened by being crushed by a tool such as a hammer as necessary.
By draining the remaining portion of the back surface water in the block body 1 from A to the outside of the block body 1, the water pressure of the back surface water to the front wall portion 2 can be reduced.

FIG. 6 shows that when the soil condition is good and the soil is hard to collapse, such as slopes of hillsides, slopes, and embankments of roads, or when the masonry height of the block main body 1 is low and stable. As a backfilling soil material U, instead of the crushed stone 6 as shown in FIG. 11, as the inside soiling material N packed in the first accommodating cavity portion 7 inside the main body 1, the same quality earth and sand 6'is packed and the partition is performed. The board 9 is pulled out from the notch opening 3A provided on the back surface of the block body 1 to eliminate the boundary between the backfilling soil material U and the backfilling soil material U, thereby eliminating the need for separation.

FIG. 10 shows a second embodiment of the present invention. In this embodiment, the partition plate 9 for covering the cutout opening 3A of the block body 1 is provided with insertion edges 9A 'and 9A' having a substantially L-shaped plane, and both sides of the cutout opening 3A are provided. Is the insertion edges 9A ', 9A'
Grooves 3A ' ₁ and 3A' ₁ for inserting and removing are provided.
Then, by increasing the number of the first accommodating cavity portion 7 for packing the crushed stones 6 as the embedding soil material N in the block body 1 as compared with the block body 1 of the embodiment, the accommodating cavity portion of the crushed stones 6 is provided. There is an advantage that the storage amount in 7 is increased, the block main body 1 is laid more stably, and even if the soil pressure of the soil T to be retained is large, the soil is retained without collapse.

In each of the above embodiments, the front wall portion 2 and the rear wall portion 3 provided at the front and rear of the block main body 1 are provided so as to be substantially opposite to each other by forming the inclination angles at substantially the same desired angle θ. However, the inclination angles of the front wall portion 2 with respect to the rear wall portion 3 do not necessarily need to be set to be the same.

Further, in the above embodiment, the side walls 4 and 4 which are substantially opposed to each other are formed so as to be installed at positions approximately 1/4 from the edges of the front wall 2 and the rear wall 3. This is an example and the present invention is not limited thereto.

[0047]

As described above, according to the present invention, it is possible to easily and surely perform the filling work of the filling soil material to be filled in the block body with respect to the soil such as the slope of the hillside, the sloping ground, and the embankment of the road. Labor saving is achieved, and the block body tilts,
It can be laid stably without tilting, and after laying it has a structurally robust finish, which makes it possible to easily and reliably hold the soil to be retained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a block body of the present invention.

FIG. 2 is a perspective view showing a state in which the block bodies located at the lowermost stage are continuously laid on the foundation portion.

FIG. 3 is a rear view showing an example of a partition plate constituting the present embodiment.

FIG. 4 is a side view of the same.

FIG. 5 is a sectional view showing an example of a usage state in the same manner.

FIG. 6 is a sectional view showing another example of the same usage state.

FIG. 7 is a plan view showing a state where the block body is laid with a desired curvature.

FIG. 8 is a perspective view showing a state in which the block main bodies are similarly built and laid at the site.

FIG. 9 is a cross-sectional view showing an example of a combined state when the block bodies are vertically stacked.

FIG. 10 is an exploded perspective view showing another embodiment of the present invention.

FIG. 11 is a cross-sectional view showing one usage state of a conventional retaining wall construction concrete block.

FIG. 12 is a sectional view showing a state where the rear template is also pulled out from the block body.

[Explanation of symbols]

1 Block Main Body 2 Front Wall 2A Drain Hole 2B Recess 3 Rear Wall 3A Notch Opening 3A ₁ Engagement Recess 3A ' ₁ Groove 4 Sidewall 4A Drain Hole 4B Convex 4C Recess 5 Bottom Plate 5B Drain Hole 6 Crushed Stone 6' Sediment 7 First storage cavity 7A Second storage cavity 7B Third storage cavity 9 Partition plate 9A 'Plug edge 10 Nut 11 Plate 12 Bolt N Infill material T Retained soil U Back Soil material

Claims (7)

[Scope of utility model registration request] 1. A front wall portion, which is capable of receiving the earth pressure of the soil to be retained, is inclined at least a desired angle rearward and faces the front wall portion.
A rear wall portion that is provided to have substantially the same length as the front wall portion, and the front wall portion
A first accommodating cavity portion capable of being filled with the earth-filling earth material is provided by side wall portions which are provided substantially opposite to each other at approximately ¼ of the left and right end edges of the rear wall portion and a bottom plate portion which covers the lower side portion. Inside the side wall
In the center, the second and third parts whose outer side is opened through the side wall part
Accommodating cavity portion to form a block body which is provided on the left and right inside of the first of said housing cavity portion, the partition plate in the rear wall wherein the valve slide of
A notch opening that can be provided substantially corresponds between the side wall portions.
A concrete block for retaining wall construction, which is characterized in that it is formed with a certain width . 2. The concrete block for retaining wall construction according to claim 1, wherein the front wall portion and the rear wall portion are provided so as to substantially face each other in a state of being inclined rearward at a desired angle. 3. The front wall portion, the partition plate, the side wall portion,
The concrete block for retaining wall construction according to claim 1, wherein a drainage hole is provided in the bottom plate portion. 4. The block main body is continuously laid with a desired curvature by forming the length of the rear wall portion to be slightly shorter than the length of the front wall portion. Concrete block for retaining wall construction described. 5. A flat L-shaped insertion edge portion is provided on both sides of the partition plate, and a groove portion that allows the insertion edge portion to be inserted and removed is provided inside the cutout opening on the left and right sides. 2. The retaining wall construction according to claim 1, wherein the partition plate is provided so as to be able to be inserted and removed in a substantially flush manner with respect to the rear wall portion, and the storage cavity portion for accommodating the embeddable earth material is increased. Concrete block. 6. A block main body which is provided so as to be vertically machinable with respect to the block main body and which is arranged vertically, and a convex portion for positioning the block main body which is arranged below the block main body and the convex portion are fitted to each other. The concrete block for retaining wall construction according to claim 1, wherein a removable recess is provided at an appropriate position. 7. the block body becomes possible masonry, before
The concrete block for constructing a retaining wall according to claim 1 or 5, wherein the concrete blocks are constructed by connecting and connecting parts including a bolt and a nut and a connecting plate on the upper and lower sides of the rear surface of the rear wall portion .