TW201615932A - Retaining wall structure - Google Patents

Abstract

To provide a retaining wall structure that significantly reduces costs, allowing a retaining wall having a three-dimensionally curved slope surface to be constructed freely without being bulky, using relatively light-weight retaining wall blocks instead of large volumes of crushed stones and gravels, and utilizing effectively wasted civil engineering materials and industrial wastes. A retaining wall structure is constructed by piling retaining wall blocks in tiers on a foundation ground, the retaining wall structure comprising a retaining wall block of a hollow cylindrical form, a sandbag block disposed between a rear surface side of the retaining wall block and a slope surface, or inside the retaining wall block, and a filler filled in a space formed by an inner space of the retaining wall block and a space surrounding the sandbag block and defined by the sandbag block, the retaining wall block and the slope surface.

Description

Retaining wall construction

The present invention relates to a retaining wall structure for constructing a retaining wall for retaining a road, a river project, a residential development project, or a revetment.

As an example of the above-described retaining wall structure, there is disclosed a prior art in which a block 32 is laminated on a base portion disposed on a base floor. (Refer to Patent Document 1)

The prior art laminated block 32 includes a front wall 33 and a rear wall 34, and a connecting body (left and right side walls 35, 36) for connecting the front and rear walls 33, 34, and is formed to face up and down The direction is an open quadrangular cylindrical shape, and the rear wall 34 sets the height to be less than half of the front wall 33. Further, the sliding resistor 40 is laterally placed between the upper portions of the left and right side walls 35, 36.

Further, the sliding resistor 40 is disposed so as to straddle the lower block side and the upper block side at the interface position above and below the respective stages formed by laminating the blocks, and the restraining layer forming material (filling material 31: Gravel, pebbles, etc.) fill the space between the front wall 33 formed on the lower block and the portion of the sliding resistor 40 on the same lower block side to form the lower side The front restraint layer, and the portion in which the restraining layer forming material (backfill material 17) is filled in the sliding resistor 40 formed on the same lower block side and the back wall or structure formed in the same lower block The space between the faces forms the rear restraint layer on the lower side.

Further, the retaining wall structure has the lower boundary portion structure of the above-described retaining wall block: the restraining layer forming material (filling material 31: gravel, pebbles, etc.) is filled in the front wall 33 formed on the upper block and the same The space between the portions of the sliding resistor 40 on the upper block side forms the front restraint layer on the upper layer side, and the restraining layer forming material (filling material 31: gravel, pebbles, etc.) is filled in the same upper layer block. a space between the portion of the body side sliding resistor 40 and the rear wall 34 of the same upper block body forms a rear restraint layer on the upper layer side, so that the front restraint layer of the upper and lower layers is at the upper and lower interface positions of the aforementioned layers. The rearward direction is continuous, and the rear restraint layers of the upper and lower layers are continuous in the vertical direction, and the front restraint layer continuous in the vertical direction and the rear restraint layer continuous in the vertical direction exert a reaction force (passive force) via the slide resistor 40. Thereby, the upper and lower boundary portion structures of the retaining wall block formed by the sliding resistance of the block at the upper and lower interfaces are strengthened.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] JP-A-2011-202499

In the retaining wall structure of the invention disclosed in the above Patent Document 1, the front wall 33, the rear wall 34, and the connecting bodies (left and right side walls 35, 36) connecting the front and rear walls 33, 34 are disposed in The retaining wall block system composed of the sliding resistors 40 between the upper portions of the left and right side walls 35, 36 is formed into a horizontally long quadrangular frame shape, so that even if it is suitable for constructing a retaining wall forming a flat surface, Not suitable for building retaining walls with a solid surface.

Further, since the retaining wall block system disclosed in the aforementioned Patent Document 1 is bulky and heavy, there is a problem that the unit price of the retaining wall block becomes expensive and the construction site of the retaining wall is constructed. Poor sex.

Further, in the retaining wall structure of the invention disclosed in the above Patent Document 1, it is necessary to fill the space formed in the inside of the retaining wall block with the filling material 31 or the backfilling material 17, and the retaining wall block and the method. The space between the faces, so a large amount of gravel or pebbles are required, and a large amount of gravel or pebbles need to be filled at the construction site of the retaining wall, which may cause poor construction.

The present invention has been developed in view of the problems of the prior art, and the object of the present invention is to provide a retaining wall structure capable of freely constructing a retaining wall having a solid surface having a three-dimensional curved surface, and is not formed as The large volume is not only the use of a lighter retaining wall block, but also does not require the use of a large amount of gravel or pebbles, etc., and can effectively be used for retaining soils with high cost reduction effects such as civil waste materials or industrial waste. Wall construction.

In order to solve the above problems, the invention disclosed in the first aspect is a retaining wall structure in which a retaining wall block is laminated on a foundation ground or a retaining wall structure in which only one layer is constructed. It consists of a structure consisting of a retaining wall block having a hollow cylindrical shape, a sand pocket disposed between the back side of the retaining wall block and the normal surface, or a block in the retaining wall block. The body, and the filling of the space formed by the inner space of the retaining wall block and the outer peripheral space of the sandbag block and partitioned by the sandbag block and the retaining wall block and the normal surface.

The invention disclosed in the second aspect is the retaining wall structure of the invention disclosed in the first aspect, wherein the front side of the retaining wall block and/or the back side of the retaining wall block The lower portion is provided with a protruding portion, and when the retaining wall block is laminated, the retaining wall structure is formed as follows: the front side lower side of the upper retaining wall block and the protruding portion of the lower retaining wall block The upper side of the back side of the bite and/or the lower retaining wall block engages with the protrusion of the upper retaining wall block.

The invention disclosed in the third aspect is the retaining wall structure of the invention disclosed in the first or second aspect, wherein the laminated wall block of each layer of the laminated retaining wall block or The retaining wall block system in which only one layer is disposed is formed into a retaining wall structure having the following structure: a plurality of columns are arranged in the thickness direction of the retaining wall.

In the invention disclosed in the fourth aspect, it is the retaining wall structure of the invention disclosed in the third aspect, wherein the retaining wall block of each layer The system is formed into a retaining wall structure of the following configuration: arranged in a staggered shape.

In the invention disclosed in the fifth aspect, the invention is the retaining wall structure of the invention disclosed in any one of the first to fourth aspects, wherein the retaining wall block of each layer of the laminated retaining wall block The body or the one-layer retaining wall block system is formed into a retaining wall structure of a configuration in which the mutually adjacent retaining wall blocks are in contact with each other.

The invention disclosed in the sixth aspect is the retaining wall structure of the invention disclosed in any one of the first to fourth aspects, wherein the retaining wall block of each layer of the laminated retaining wall block The body or the one-layer retaining wall block system is formed into a retaining wall structure of the following configuration: configured to isolate mutually adjacent retaining wall blocks from each other.

The invention disclosed in the seventh aspect is the retaining wall structure of the invention disclosed in any one of the first to sixth aspects, wherein the sandbag block system is formed into a retaining wall structure having the following structure: One or a plurality of angular sandbag blocks.

The invention disclosed in the eighth aspect, which is the retaining wall structure of the invention disclosed in any one of the first to seventh aspects, wherein the foundation ground system is formed into a retaining wall structure having the following structure: It is composed of a reinforced ground plate in which a plurality of gyro-type blocks are embedded.

The invention disclosed in the ninth aspect is a retaining wall structure which is a structure in which a retaining wall block is laminated on a foundation ground or a retaining wall structure in which only one layer is constructed, which is composed of the following members. The composition comprises: a retaining wall block having a solid cylindrical shape, a sandbag block disposed between the back side of the retaining wall block and the normal surface, and a periphery filled with the sandbag block Space and the filling of the space formed by the sandbag block and the retaining wall block and the normal surface.

The invention disclosed in the tenth aspect is the retaining wall structure of the invention disclosed in the ninth aspect, wherein the front side of the retaining wall block and/or the back of the retaining wall block The side lower portion is provided with a protrusion portion, and when the retaining wall block is laminated, the retaining wall structure is formed as follows: the front side lower side and the lower side retaining wall block protrusion of the upper side retaining wall block The upper part of the back side of the partial bite and/or the lower retaining wall block engages with the protrusion of the upper retaining wall block.

According to the present invention, a retaining wall structure is a structure consisting of a retaining wall block having a hollow cylindrical shape disposed between a back side of a retaining wall block and a normal surface or It is a sandbag block in the block of the retaining wall, and a space filled in the inner space of the retaining wall block and the outer space of the sandbag block and formed by the sandbag block and the retaining wall block and the normal surface. The filling material, whereby the retaining wall forming the normal surface having the three-dimensional curved surface can be freely constructed and the shape of the retaining wall block or the retaining wall surface structure can be made simple, and the volume can be made. Smaller and lighter, the cost of the retaining wall block or the retaining wall structure can be reduced, and the construction of the retaining wall construction site can be improved.

Further, according to the present invention, a retaining wall structure is constructed as follows: a sandbag block is disposed on the back of a retaining wall block Between the side and the normal surface or in the retaining wall block, and filling the filling material in the inner space of the retaining wall block and the outer peripheral space of the sandbag block and by the sandbag block and the retaining wall block and the method Because the space formed by the surface is divided, it is possible to reduce the filling material composed of gravel or pebbles, and it is possible to fill the sandbag block with civil waste materials or industrial waste, etc., so that the civil waste materials or industrial wastes, etc. It can be effectively utilized, and can reduce the cost of filling and improve the construction of the retaining wall construction site.

Further, since the filler composed of crushed stone, pebbles, or the like is placed on the outer periphery of the sandbag block, it is easy to drain, and as a result, the strength of the retaining wall structure can be improved.

10‧‧‧Retaining wall block

11‧‧‧Protruding

20‧‧‧ sandbag block

21‧‧‧ sandbag body

22‧‧‧ Fixed Department

23‧‧‧ sandbag filling

30‧‧‧ Fillings

40‧‧‧法

50‧‧‧Basic Site

51‧‧‧Gyro block

Fig. 1 is a view showing an embodiment of a retaining wall block disclosed in the present invention.

Fig. 2 is a view showing an embodiment in which a sandbag block is disposed in the retaining wall block disclosed in the present invention.

Fig. 3 is a view showing an embodiment in which a sandbag block is disposed on the back side of the retaining wall block disclosed in the present invention.

4(a) to 4(f) are diagrams showing an arrangement of the arrangement of the retaining wall block and the sandbag block constituting the retaining wall in the plane.

Fig. 5(a) to Fig. 5(e) show an embodiment of the arrangement of the retaining wall block and the sandbag block of the retaining wall section.

Figure 6 shows an implementation of the retaining wall structure disclosed in the present invention. A bird's eye view of the example.

Hereinafter, embodiments of the present invention will be described using the drawings. 1 is a view showing an embodiment of a retaining wall block 10 disclosed in the present invention, and FIG. 2 is a view showing an embodiment in which a sand bag block 20 is disposed in a retaining wall block 10 disclosed in the present invention. .

In addition, Fig. 3 shows an embodiment in which the sandbag block 20 is disposed on the back side of the retaining wall block 10 disclosed in the present invention.

The retaining wall block 10 has a hollow cylindrical shape and is not particularly limited in size (D), height (L), wall thickness (T), and the like.

In the present specification, the shape of the hollow column is not limited to the outer circumference of the section and the circumference of the section is circular, but the concept of a polygon including an ellipse or a pentagon or more, and a truncated cone or a truncated cone. concept.

The retaining wall block 10 can be formed using concrete. As the concrete to be used, it is either a permeable concrete or a non-permeable concrete.

Further, the retaining wall block 10 is not limited to a concrete, and may be made of metal such as iron which is formed by applying a rustproof treatment, or a resin material having corrosion resistance, or a resin composite material. . Further, the structure of the retaining wall block 10 can be a lattice (grid) structure, a skeleton (frame, truss) structure, or a skeleton structure. By making With the above configuration, not only the function of holding and draining the following filler 30 but also the inside of the retaining wall block 10 can be performed.

A protrusion 11 as shown in Fig. 1 may be provided on the upper portion of the front side of the retaining wall block 10. When the protruding portion 11 is laminated on the retaining wall block 10, the upper side lower portion of the upper retaining wall block 10 is engaged with the protruding portion 11, so that the upper retaining wall block can be prevented. The body 10 is pushed forward due to the earth pressure.

Further, although not shown, the protruding portion 11 may be provided on the lower portion of the back side of the retaining wall block 10. By providing the projections 11, the projections 11 provided on the lower rear side of the upper retaining wall block 10 and the upper rear side of the lower retaining wall block 10 are engaged with each other, thereby preventing the upper retaining wall block. The body 10 is pushed forward due to the earth pressure.

Further, instead of the above-mentioned protrusions 11, a protrusion (not shown) may be provided on the lower surface of the retaining wall block 10, and when the retaining wall block 10 is laminated, by blocking The earth wall block 10 is engaged with the lower side filler 30 to prevent the upper side retaining wall block 10 from being pushed forward due to the earth pressure.

Here, the front side refers to the surface side of the retaining wall after the final completion, and the back side refers to the surface of the front side of the retaining wall block.

Further, when the retaining wall block 10 is made of concrete, it is also possible to reduce the weight or increase the water permeability by providing one or a plurality of through holes in the main body portion of the retaining wall block 10. Sex.

The sandbag block 20 is formed by filling the sandbag body 21 with the sandbag filling body 21. As the sandbag body 21 of the present invention, it is used: A bag made of a synthetic resin fiber woven fabric sheet, a metal mesh structure having a degree of being able to accommodate and retain the sandbag filler 23, or a bag body made of a synthetic resin fiber mesh structure, and can be used in an angular shape, a spherical shape, or a round shape. The shape of a cylinder or the like, particularly a large-angle shape is preferred.

The sandbag body 21 is provided with a fixing portion 22 at one or a plurality of points that are connected to other structures. As a sandbag filling system, it is possible to directly fill in civil waste materials, industrial waste, and the like, and it is also possible to pulverize the civil waste materials or industrial wastes and then fill them. Of course, it is also possible to fill in aggregates such as earth sand or gravel other than civil waste materials or industrial waste, or soil. By filling the sandbag filler 23 with civil waste materials or industrial waste, it is possible to promote the effective use of civil waste materials, industrial waste, and the like. Further, by filling the soil into the sandbag filler 23, it can be used as a cultivation soil for planting as described below.

In addition, in the embodiment shown in FIG. 2 and FIG. 3, the structure in which one sandbag block 20 is used in one retaining wall block 10 is not limited to the above structure, and may be Two retaining wall blocks 10 use two or more sandbag blocks 20. Further, a structure in which one sandbag block 20 is used in a plurality of retaining wall blocks 10 may be employed.

In the above description, the retaining wall block 10 has a hollow cylindrical shape, but the present invention is not limited thereto. The retaining wall block 10 can also be formed into a solid cylindrical shape.

4(a) to 4(f) illustrate the implementation of the arrangement of the retaining wall block 10 and the sandbag block 20 constituting the retaining wall in the plane. example.

Fig. 4(a) shows a retaining wall structure in which the retaining wall blocks 10 of the same size are arranged in a row along the normal surface 40 in a horizontal plane, and the sandbag block 20 is disposed in the retaining wall block. The back side of 10. Adjacent retaining wall blocks 10 are configured to abut each other. In this case, the filler 30 is filled in the interior of the retaining wall block 10 and the space formed by the retaining wall block 10, the sandbag block 20, and the normal surface 40. As the filler 30, crushed stone, pebbles, or the like is used.

Fig. 4(b) shows a retaining wall structure in which the retaining wall blocks 10 of the same size are arranged in a row along the normal surface 40 in a horizontal plane, and the sandbag block 20 is disposed in the retaining wall block. The back side of 10. Adjacent retaining wall blocks 10 are configured to be isolated from one another. This case is the same as that of Fig. 4(a), in which the filling material 30 is filled in the interior of the retaining wall block 10, and is formed by the retaining wall block 10, the sandbag block 20, and the normal surface 40. space.

Fig. 4(c) shows a retaining wall structure in which the retaining wall blocks 10 of the same size are arranged in a row along the normal surface 40 in a horizontal plane, and the sandbag block 20 is disposed in the retaining wall block. The back side of the middle and retaining wall block 10. Adjacent retaining wall blocks 10 are configured to contact each other. In this case, the filler 30 is filled in a space formed by the retaining wall block 10, the sandbag block 20, and the normal surface 40.

Fig. 4(d) shows a retaining wall structure in which the retaining wall blocks 10 of the same size are arranged in two rows along the normal surface 40 on the horizontal surface, and the sandbag block 20 is disposed in the retaining wall block. The back side of the body 10 and Between the French and the 40th. Adjacent retaining wall blocks 10 are configured to contact each other. This case is the same as that of Fig. 4(a), in which the filling material 30 is filled in the interior of the retaining wall block 10, and is formed by the retaining wall block 10, the sandbag block 20, and the normal surface 40. space.

Fig. 4(e) shows a retaining wall structure in which the retaining wall blocks 10 of the same size are arranged in a staggered manner along the normal surface 40 in a horizontal plane, and the sandbag block 20 is arranged in the block. The back side of the earth wall block 10 is between the surface 40 and the normal surface 40. Moreover, adjacent retaining wall blocks 10 are configured to be isolated from one another. This case is the same as that of Fig. 4(a), in which the filling material 30 is filled in the interior of the retaining wall block 10, and is formed by the retaining wall block 10, the sandbag block 20, and the normal surface 40. space. After the sandbag block 20 and the retaining wall block 10 are mechanically fixed, the filler 30 is laid on the inner surface of the retaining wall block 10, the outer peripheral surface of the sandbag block 20, and the normal surface 40. Space. At this time, the upper surface of the filling material 30 is formed to be flush with the upper surface of the retaining wall block 10, or the upper surface of the filling material 30 is formed to be slightly lower than the upper surface of the retaining wall block 10. And formed to be flat.

Fig. 4(f) shows a retaining wall structure in which the retaining wall blocks 10 having different sizes are arranged in two rows along the normal surface 40 on the horizontal surface, and the sandbag block 20 is disposed in the retaining wall. The back side of the block 10 is between the surface 40 and the normal surface 40. Adjacent retaining wall blocks 10 are configured to contact each other. This case is the same as that of Fig. 4(a), in which the filling material 30 is filled in the interior of the retaining wall block 10, and is formed by the retaining wall block 10, the sandbag block 20, and the normal surface 40. space.

The arrangement method of the retaining wall block 10, the sandbag block 20, and the filler 30 in the horizontal plane of the retaining wall is not limited to the above arrangement, and various arrangement methods other than the above-described arrangement may be employed.

Figs. 5(a) to 5(e) are diagrams showing an arrangement of the arrangement of the retaining wall block 10 and the sandbag block 20 of the retaining wall section. Fig. 5(a) is a longitudinal sectional view showing a structure of a retaining wall corresponding to the in-plane arrangement of the retaining wall block 10, the sandbag block 20, and the filler 30 shown in Fig. 4(a), and The retaining wall structure in the case where the projection 11 shown in Fig. 1 is provided on the upper portion of the back side of the retaining wall block 10 is provided.

Taking the retaining wall structure shown in Fig. 5(a) as an example, the construction method will be described below.

First, the foundation floor 50 is placed below the normal surface 40 provided by cutting soil or soil.

The foundation floor 50 is laid and fixed by gravel or the like to make it horizontal, and the thickness thereof is appropriately adjusted according to the height or inclination angle of the retaining wall structure. The retaining wall block 10 of the first layer is placed on the base floor 50 formed horizontal as described above using a crane or the like. Next, the sandbag block 20 is placed between the back side of the retaining wall block 10 and the normal surface 40 using a crane or the like. The sandbag block 20 is filled with a sandbag filler 23 by using a crane or the like.

After the retaining wall block 10 and the sandbag block 20 are disposed, the adjacent retaining wall blocks 10, adjacent sandbag blocks 20, and adjacent blocks can be mechanically coupled and fixed as needed. The earth wall block 10 and the sand bag body 20.

After mechanically joining and fixing the sandbag block 20 and the retaining wall block 10, the filler 30 is laid and fixed inside the retaining wall block 10, and the retaining wall block 10 and the sandbag block 20 are And the space formed by the division of the 40th.

Thereby, the lamination of the retaining wall block 10 of the first layer is completed, and then the stack of the retaining wall blocks 10 after the second layer is sequentially repeated over the top of the filling 30 of the first layer. Layer to complete the retaining wall construction. Further, in the case where the retaining wall block 10 after the second layer is laminated, the front side lower portion of the upper retaining wall block 10 and the protruding portion of the lower retaining wall block 10 are provided. 11 bite. As described above, by engaging the front lower portion of the upper retaining wall block 10 with the protruding portion 11 of the lower retaining wall block 10, it is possible to prevent the upper retaining wall block 10 from being pressed by the earth pressure. Launched towards the front.

Fig. 5(b) is a cross-sectional view showing the structure of the retaining wall corresponding to the in-plane arrangement of the retaining wall block 10, the sandbag block 20, and the filler 30 shown in Fig. 4(a). The retaining wall structure for reinforcing the foundation floor 50 is achieved by embedding a plurality of gyro-type blocks 51 on the base site 50. As described above, by applying the gyro type block 51 to the base site 50, a strong retaining wall structure can be constructed even in a weak ground.

Fig. 5(c), Fig. 5(d), and Fig. 5(e) show the retaining walls shown in Fig. 4(c), Fig. 4(d), and Fig. 4(f), respectively. A cross-sectional view of the corresponding retaining wall structure is disposed in the plane of the block 10, the sandbag block 20, and the filler 30, and the retaining wall structure is The construction method is carried out in accordance with the construction method of the retaining wall structure of Fig. 5(a).

In addition, in the cross-sectional view of the retaining wall structure shown in FIG. 5, the laminated retaining wall block 10 is shown, but the present invention is not limited thereto. For example, it is also possible to use a retaining wall structure in which only one layer of the retaining wall block 10 is disposed in a plane.

Fig. 6 is a bird's eye view showing one embodiment of the retaining wall structure disclosed in the present invention, and is a bird's eye view showing the structure of the retaining wall shown in Figs. 4(a) and 5(a).

Further, in the above-described retaining wall structure, the adjacent retaining wall blocks 10 disposed in a plurality of retaining wall blocks disposed in a plane may be connected to each other or laminated The retaining wall block 10 adjacent to the upper and lower directions. The method of connecting the adjacent retaining wall blocks can be connected by bolts, wires, or the like, or by other connecting structures (for example, connecting portions formed by concrete blocks). Alternatively, the adjacent retaining wall blocks 10 may be formed into a plurality of pieces to integrate them.

10‧‧‧Retaining wall block

11‧‧‧Protruding

20‧‧‧ sandbag block

30‧‧‧ Fillings

Claims (10)

A retaining wall structure is a structure of a retaining wall which is laminated on a foundation ground plate or a layer of only one layer for construction. It is characterized by: consisting of the following components: having a hollow cylindrical shape The retaining wall block of the shape, the sandbag block disposed between the back side and the normal surface of the retaining wall block or the retaining wall block, and the inner space and sandbag filled in the retaining wall block The outer space of the block and the filling of the space formed by the sandbag block and the retaining wall block and the normal surface. The retaining wall structure according to the first aspect of the invention, wherein a protrusion is provided on an upper portion of the front side of the retaining wall block and/or a lower portion of the back side of the retaining wall block, and the retaining wall is When the block is laminated, the upper side of the upper side of the retaining wall block and the protrusion of the lower retaining wall block are engaged and/or the upper side and the upper side of the lower side of the retaining wall block are formed. The protrusion of the retaining wall block engages. For example, the retaining wall structure described in claim 1 or 2, wherein the retaining wall block of each layer of the laminated retaining wall block or the retaining wall block system with only one layer is provided. The plurality of columns are arranged in the thickness direction of the retaining wall. The retaining wall structure as described in claim 3, wherein the retaining wall block system of each layer is arranged in a staggered shape. Such as the retaining wall structure described in item 1 or 2 of the patent application scope The retaining wall block of each layer of the laminated retaining wall block or the retaining wall block system of only one layer is arranged such that the adjacent retaining wall blocks are in contact with each other. For example, the retaining wall structure described in claim 1 or 2, wherein the retaining wall block of each layer of the laminated retaining wall block or the retaining wall block system with only one layer is provided. It is configured to isolate mutually adjacent retaining wall blocks from each other. The retaining wall structure as described in claim 1 or 2, wherein the sandbag block system is composed of one or a plurality of angular sandbag blocks. The retaining wall structure according to the first or second aspect of the invention, wherein the base ground is composed of a reinforcing ground in which a plurality of gyro blocks are embedded. A retaining wall structure is a structure of a retaining wall which is laminated on a foundation ground plate or a layer of only one layer for construction. It is characterized by: consisting of the following components: having a solid cylindrical shape a shape retaining wall block, a sandbag block disposed between the back side of the retaining wall block and the normal surface, and a peripheral space filled in the sandbag block by the sandbag block and the retaining wall block Filling of space formed by division with the French. The retaining wall structure as recited in claim 9, wherein the front side of the retaining wall block and/or the retaining wall block a protrusion is provided on a lower portion of the back side of the body, and when the retaining wall block is laminated, the lower side of the upper side of the retaining wall block engages with the protrusion of the lower retaining wall block and/or The upper side of the back side of the lower retaining wall block engages with the protrusion of the upper retaining wall block.