JP2005200953A - Slope face seeding and planting retaining wall structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slope face seeding and planting retaining wall structure, capable of stably maintaining vegetation, by easily applying the vegetation to a rising wall board, by maximally effectively using upper land continuing with a top end part of a retaining wall. <P>SOLUTION: An integral structure is composed of a bottom surface wall board arranged in the bottom part ground of a slope face and entering up to the specific depth from a front part of the slope face, and the rising wall board joined over the whole width to a front edge part of the bottom surface wall board and having the height corresponding to the substantially whole height of the slope face; and has the rising wall board continuing up to reaching the top end part from a bottom end part. The rising wall board and the bottom surface wall board are integrally molded as a rigid body by precast molding in a factory or the placing formation at a job site. A vegetation soil storage part communicating with the front part or the bottom part ground of the slope face, is formed by longitudinally penetrating through the rising wall board. The vegetation fixed to the vegetation soil storage part, is exposed to the front side of the rising wall board. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a retaining wall structure for slope planting that can be constructed and maintained on a slope front surface, which is constructed on residential land, roads, and other slopes and adapted to natural scenery.

  In the conventional retaining wall structure for slope planting, small concrete retaining wall blocks, which are much lower than the total height of the slope, are stacked side by side in multiple stages, and the front wall of the retaining wall block The vegetation soil container is filled with soil and fertilizer, and in some cases vegetation seeds are mixed to fill the vegetation soil, and the vegetation such as turf and grass is exposed from the opening on the front side of the vegetation soil container. The retaining wall is greened (for example, Patent Document 1).

However, in this stacked retaining wall, the retaining wall blocks adjacent to the top, bottom, left, and right are not joined so that they can be structurally evaluated as one body, and resist the lateral earth pressure on the slope due to the weight of the retaining wall block. Therefore, there are certain restrictions on the number of steps to be stacked and the inclination angle of the retaining wall, making it unsuitable for steep and high slopes. In addition, the effective use area in the upper land that continues to the top end of the retaining wall is reduced by the amount of inclination of the retaining wall to be constructed.

On the other hand, using a large retaining wall block in which the bottom wall slab and the standing wall slab are integrally molded into an L shape with reinforced concrete, excavating part of the slope and installing the bottom wall slab within the slope, the bottom wall slab An L-type retaining wall structure has been proposed in which earth and sand are backfilled in the space between the upright wall plates (see Patent Document 2).

In this L-type retaining wall structure, the standing wall plate of the retaining wall block has a height corresponding to the total height of the slope, and the retaining wall surface is formed as a single unit. The resistance to pressure increases, making it suitable for slopes with high steep angles, and the effective use area of the land above the slope is wide.

However, since the concrete molding surface is exposed on the front surface of the retaining wall, the appearance is very monotonous and inorganic, and the standing wall plate of the retaining wall block is a flat plate with no irregularities over its entire width and height. Since there are no vegetation parts on the standing wall plate, only intimidating concrete wall surfaces were formed.

Japanese Patent No. 2963093 JP 9-256450 A

The problem of the present invention is that the upper land continuous to the top end portion of the retaining wall can be effectively used to the maximum, and vegetation can be easily applied to the standing wall plate, and the vegetation can be stably provided. It is to provide a retaining wall structure for slope planting that can be maintained.

The main feature of the invention of claim 1 is that it is installed on the bottom ground of the slope, and is connected to the bottom wall slab that penetrates from the front part of the slope to a certain depth and to the front edge of the bottom wall slab over the entire width, It consists of an upright wall plate having a height corresponding to almost the entire height, and the upright wall plate is a continuous structure from the bottom end to the top end, and the upright wall plate and the bottom wall plate are in the factory. It is integrally molded as a rigid body by precast molding or on-site casting formation, and a vegetation soil containing portion communicating with the front or bottom ground of the slope is formed through the standing wall plate in the front-rear direction. The vegetation fixed in the soil container is exposed on the front side of the standing wall plate.

According to a second aspect of the present invention, in the retaining wall structure for slope planting according to the first aspect of the present invention, the vegetation soil containing portion includes one or a plurality of holes penetrating the standing wall plate in the front-rear direction and a standing wall. It is composed of a pocket part formed in communication with the hole on the rear side of the wall slab, the pocket part is surrounded by a surrounding wall, and a downward opening is formed on the lower surface. It is.

According to a third aspect of the present invention, in the retaining wall structure for slope planting according to the first aspect of the present invention, the vegetation soil container includes one or a plurality of holes penetrating the standing wall plate in the front-rear direction, and a standing wall. It is composed of a pocket portion formed in communication with the hole portion on the front side of the wall plate, the pocket portion is surrounded by a surrounding wall, and an upward opening is formed on the upper surface. It is.

According to a fourth aspect of the present invention, in the retaining wall structure for slope planting according to the first aspect of the invention, the vegetation soil container includes one or a plurality of holes penetrating the standing wall plate back and forth, and a standing wall. It is composed of a pocket portion formed on the front side of the wall plate so as to communicate with the hole portion, and the pocket portion is surrounded by a surrounding wall, forming an upward opening on the upper surface, and on the lower surface. A downward opening facing the bottom ground is formed.

According to a fifth aspect of the present invention, in the retaining wall structure for greening of the slope of the invention of the second aspect, a material for preventing suction of sloped soil on the rear side of the standing wall plate so as to cover the lower surface opening of the pocket portion. Is arranged.

A feature of the invention of claim 6 is that, in the retaining wall structure for greening of the invention of claim 2, a vegetation sandbag is filled in the lower surface opening of the pocket portion.

According to a seventh aspect of the present invention, in the retaining wall structure for greening of the slope of the invention of the third aspect, a material for preventing suction of the sloped soil is arranged on the rear side of the standing wall slab so as to cover the hole. That is.

A feature of the invention of claim 8 is that, in the retaining wall structure for slope planting of the invention of claim 3, one or both of the bottom part of the pocket part and the hole part are filled with a vegetation sandbag.

According to a ninth aspect of the present invention, in the retaining wall structure for greening of the slope of the invention of the fourth aspect, a material for preventing the suction of sloped soil is arranged on the rear side of the standing wall plate so as to cover the hole. That is.

A feature of the invention of claim 10 is that, in the retaining wall structure for slope greening of the invention of claim 4, one or both of the bottom part of the pocket part and the hole part are filled with a vegetation sandbag.

  The feature of the invention of claim 11 is that in the sloped green retaining wall structure of the invention of claim 2, claim 5 or claim 6, the position of the lower end surface of the surrounding wall of the pocket portion is set to the position of the hole. That is, it is arranged below the position of the lower side surface.

In the retaining wall structure for slope planting of the invention of claim 1, the standing wall plate and the bottom wall plate are integrally formed as a rigid body by precast molding at the factory or cast formation at the site, and the leading edge of the bottom wall plate The standing wall slab connected to the entire width of the wall is a continuous structure that extends from the bottom edge to the top edge, and has a height corresponding to almost the entire height of the slope. The retaining wall can be constructed firmly, and the effective use area of the upper land continuing to the top end can be secured to the maximum.
In addition, the standing wall slab is formed by penetrating the vegetation soil receiving part communicating with the front or bottom ground of the slope in the front and back, so it is necessary or necessary by selecting vegetation suitable for the soil quality of the slope By applying appropriate soil improvement treatment, the optimal vegetation can be easily grown on the front side of the standing wall slab, and the monotonous and tasteless dry concrete wall landscape can be improved.

In the retaining wall structure for slope planting of the invention of claim 2, in addition to the effect of the invention of claim 1, the pocket part constituting the vegetation soil accommodating part is one or a plurality of penetrating through the standing wall plate Since the peripheral side surface of the pocket portion is surrounded by the surrounding wall, most of the lateral soil pressure on the slope is supported by the surrounding wall, and the vegetation in the pocket portion is Soil is not pushed out from the hole, and vegetation can be maintained with good stability. Moreover, since the downward opening part is formed in the lower surface of the said pocket part, when the root of the vegetation given to the said hole part and a pocket part expand | extends in a slope soil, a vegetation is firmly made to a slope. It will be fixed. Furthermore, since the excess portion of rainwater that has penetrated into the pocket portion is absorbed into the slope soil from the lower surface opening portion, root rot will not occur in the vegetation in the hole portion and pocket portion.

In the retaining wall structure for slope planting of the invention of claim 3, in addition to the effect of the invention of claim 1, the pocket part constituting the vegetation soil accommodating part is one or a plurality of penetrating through the standing wall plate Since it is arranged on the front side of the individual hole part, and the hole part faces the bottom part of the pocket part, a considerable part of the side earth pressure on the slope is supported by the standing wall plate, The vegetation soil in the pocket portion is not pushed out from the upper surface opening, and the vegetation can be maintained with good stability. In addition, the roots of the vegetation extend into the slope soil from the hole portion communicating with the bottom of the pocket portion, so that the vegetation is firmly fixed on the slope. Furthermore, since the excess portion of rainwater that has penetrated into the pocket portion is absorbed into the slope soil from the hole portion, root rot of the vegetation in the pocket portion does not occur.

In the retaining wall structure for slope planting of the invention of claim 4, in addition to the effect of the invention of claim 1, the pocket part constituting the vegetation soil accommodating part is one or a plurality of penetrating through the standing wall plate Since the hole is located on the front side of each hole, and the hole faces the middle part of the pocket part, a small part of the side earth pressure on the slope is supported by the standing wall plate. The vegetation soil in the pocket portion is not pushed out from the upper surface opening, and the vegetation can be maintained with good stability. In addition, the roots of the vegetation extend into the slope soil or the bottom ground from the lower surface openings of the hole and pocket portions, so that the vegetation is firmly fixed on the slope or the bottom ground. Furthermore, since the excess portion of rainwater that has penetrated into the pocket portion is absorbed into the bottom ground or slope soil from the lower surface opening portion or the hole portion, root rot will not occur in the vegetation in the pocket portion.

In the retaining wall structure for slope planting of the invention of claim 5, in addition to the effects of the inventions of claims 1 and 2, the lower surface opening of the pocket part is covered with a sucking prevention material, It is possible to prevent the slope soil from flowing out with the slope drainage flowing from the inside of the slope to the pocket and the hole.

In the retaining wall structure for slope planting of the invention of claim 6, in addition to the effects of the inventions of claims 1 and 2, the bottom opening of the pocket is filled with a vegetation sandbag, The optimal soil environment corresponding to the vegetation of the vegetation can be prepared and the vegetation generation and establishment can be promoted. In addition, the vegetation sandbag functions in the same manner as the suction prevention material, and can accurately prevent the slope soil from flowing out along with the drainage flowing from the inside of the slope to the pocket portion and the hole portion. .

In the slope wall retaining wall structure of the invention of claim 7, in addition to the effects of the inventions of claims 1 and 3, the rear side opening of the hole is covered with a sucking prevention material. The slope soil can be prevented from flowing out with the slope drainage flowing from the inside of the slope to the hole and the pocket.

In the slope wall retaining wall structure of the invention of claim 8, in addition to the effects of the inventions of claim 1 and claim 3, a vegetation sandbag is filled in one or both of the bottom part of the pocket part and the hole part. Therefore, it is possible to prepare an optimum soil environment corresponding to the target vegetation and promote the generation and establishment of vegetation. In addition, this vegetation sandbag functions in the same manner as the above-described sucking prevention material, and accurately prevents the slope soil from flowing out along with the slope drainage flowing from the inside of the slope to the hole and pocket. Can do.

In the slope wall retaining wall structure according to the ninth aspect of the invention, in addition to the effects of the first and fourth aspects of the invention, the opening on the rear surface side of the hole is covered with the suction preventing material. The slope soil can be prevented from flowing out with the slope drainage flowing from the inside of the slope to the hole and the pocket.

In the retaining wall structure for slope planting according to the invention of claim 10, in addition to the effects of the inventions of claims 1 and 4, a vegetation sandbag is filled in one or both of the bottom part of the pocket part and the hole part. Therefore, it is possible to prepare an optimum soil environment corresponding to the target vegetation and promote the generation and establishment of vegetation. In addition, this vegetation sandbag functions in the same manner as the above-described sucking prevention material, and accurately prevents the slope soil from flowing out along with the slope drainage flowing from the inside of the slope to the hole and pocket. Can do.

The feature of the invention of claim 11 is that, in addition to the effect of each invention of claim 2, claim 5 or claim 6, the position of the lower end surface of the surrounding wall of the pocket portion is determined from the position of the lower side surface of the hole portion. Since it is arranged on the lower side, the level difference between the two positions can suppress the outflow of the saturated soil in the slope soil as much as possible, as well as the extrusion of the slope soil by the back pressure.

The anti-sucking material is a sheet-like anti-felt felt product formed by high-quality synthetic fiber as a main raw material by the needle punch manufacturing method and has a high tensile strength (preferably 10 kN / m or more) and elongation. Excellent in sheet strength (desirably 50% or more), a sheet-like non-woven product manufactured by a spunbond manufacturing method using polyester long fibers as a raw material, having a large elongation (desirably 65% or more) and excellent flexibility, It is a sheet-like short fiber nonwoven fabric product that is formed by processing with an adhesive and a needle punch process using natural palm fiber as a raw material, and has excellent water permeability (preferably a water permeability of 5 × 10 ⁻¹ ), which is not easily clogged, or Sheet-like short-fiber non-woven fabric products that are formed and processed using an adhesive and a needle punch manufacturing method using synthetic fibers as raw materials, which are also suitable for soils with small particles, etc. is there.

  In addition, the vegetation sandbag is equipped with a fertilizer bag (super slow-acting control fertilizer, water retention material, soil improvement material). Yes, with a light-shielding net bag body that prevents the base material from flowing out and drying due to rainfall and frost heaving, and a greening material in which seeds, fertilizers, water retention agents, etc. are attached to a polyethylene sandbag, with water-soluble foam The seeds germinate by mounting and the initial growth is vigorous, and the shade net bag body prevents the base material from flowing out and drying due to rain and frost heaving, or plant fiber (degradable material) And a combination of chemical fibers (corrosion-resistant material), and part of the material decomposes and disappears after construction, so the roots of the plant attached to the sandbag can enter the slope and the surrounding vegetation Also easily invaded Can, vegetation that integrates the slope can be formed at an early stage, since the soil dressing the bag material to ensure protection, heat insulation effect is better able to prevent frost heave, and the like ones can be winter construction. It is desirable to use normal soil and remove stones, wood chips, etc. as the customer soil to be packed in the sandbag.

  FIGS. 1 to 7 relate to an embodiment of the invention of claim 1 and claim 2 of the invention, and the retaining wall block 1 which is constructed side by side to construct the retaining wall structure is composed of a bottom wall plate 2 and a standing wall plate. 3 is arranged at a right angle, and a reinforcing rib 4 is formed at the center in the width direction between them. Four holes 5 are formed vertically and horizontally in the shape of rectangular windows. The pocket portion 6 communicating with the entire opening area of the hole portion 5 is formed so as to have a trapezoid shape that becomes narrower as the horizontal cross section of the surrounding wall 7 moves toward the rear surface side. The lower surface opening 8 of the pocket 6 opens straight toward the bottom wall slab 2. Downwardly inclined slopes 5 a and 5 b are formed on the upper side and the lower side of the hole 5, so that the vegetation 9 extends and protrudes from the pocket 6.

  Although the vegetation soil accommodating part which consists of the hole part 5 and the pocket part 6 is formed in two steps up and down, the soil of the lower end surface 7a of the said surrounding wall 7 set for the outflow suppression of the saturated water in a slope The level difference D between the position and the position of the lower side surface 5b of the hole 5 is set only for the upper vegetation soil accommodating part.

Retaining wall block 1 is precast molded with reinforced concrete at the factory. The front surface of the slope 10 is excavated to a depth corresponding to the depth dimension of the bottom wall slab 2, and a crushed stone foundation 11 is formed on the bottom of the excavation by rolling and compacting crushed stone and gravel. The concrete foundation 12 is horizontally formed by placing fresh concrete. In the retaining wall block 1 carried into the site from the factory, the bottom wall slab 2 is placed on the concrete foundation 12, and the standing wall slab 3 is arranged vertically.

A plurality of retaining wall blocks 1, 1 installed side by side in accordance with the width of the slope 10 are joined together by using an appropriate connecting member, and the bottom wall slab 2, the standing wall slab 3, and the slope 10 are excavated. The earth and sand are backfilled up to the top edge of the standing wall plate 3 in the space surrounded by the surface.
After the retaining wall is constructed in this manner, the soil 5 in the hole 5 and the pocket 6 serving as the vegetation soil accommodating portion is replaced with soil suitable for the target vegetation, but the original slope soil 13 is the target. When it is suitable for vegetation, it is used as vegetation soil as it is. In the vegetation soil, seeds of the desired vegetation can be mixed with nutrients and placed.

Vegetation planted in the vegetation soil as seeds or seedlings grows by absorbing nutrients and moisture in the vegetation soil, and the roots extend into the slope soil, thereby absorbing nutrients and moisture from the slope soil. Roots in the sloped soil. The stem extends from the pocket part 6 and the hole part 5 to the front side of the upright wall plate 3 and improves the concrete wall surface which has been tasteless and dry by greening.

When the height dimension of the standing wall slab 3 is increased corresponding to the height of the slope 10, the depth dimension of the bottom wall slab 2 is also increased. Therefore, the overall size of the L-type retaining wall block 1 is normal. It grows so large that it can't fit in the cargo truck bed. In such a case, formwork is performed to cast ready concrete, and the retaining wall block 1 is formed on site.

In both the precast molding at the factory and the on-site casting molding, the standing wall slab 3 is generally formed vertically, but depending on conditions such as the slope of the slope, it may be formed at a slightly obtuse angle. it can.

FIGS. 8 to 10 show an embodiment of the invention of claim 5 in which a netting sheet-like metal, plastic or cloth sucking prevention material 14 is arranged so as to cover the entire back surface of the upright wall plate 3. ing. The suction preventing material 14 is fixed to the standing wall plate 3 with an adhesive or the like over the entire surface or an appropriate place and length. The suction preventing material 14 attached along the outer shape of the surrounding wall 7 of the pocket portion 6 closes the lower surface opening 8 of the pocket portion 6 to the extent that moisture can pass through, and thereby the slope associated with drainage. Prevents soil runoff.

The roots of the plant extend from the mesh slits of the sucking-inhibiting material 14 into the sloped soil 13, and the roots of the vegetation are entangled with the sucking-inhibiting material 14, so that the vegetation is erected through the sucking-inhibiting material 14. Therefore, scouring and dropping off of vegetation by rain water flowing down the outer surface side of the upright wall plate 3 is prevented. Since other configurations and operations are substantially the same as those of the above-described embodiment, description thereof is omitted.

FIG. 11 and FIG. 12 show an embodiment of the invention of claim 6. The vegetation sandbag 15 encloses vegetation seeds, soil components and nutrients. The sandbag itself is made of a mesh sheet material made of cloth or plastic, and the vegetation sandbag 15 closes the lower surface opening 8 of the pocket portion 6 to the extent that moisture can pass, and accompanies drainage of the slope soil. Is preventing the outflow.

The vegetation germinated in the vegetation sandbag 15 extends through the mesh slits of the vegetation sandbag 15 into the slope soil, and the stalk extends through the mesh slits of the vegetation sandbag to the outside. Green the front side. Instead of mixing plant seeds in the vegetation sandbag 15, plant seeds can be sown on the vegetation sandbag 15, or an appropriate portion of the surface portion of the sandbag 15 can be cut to plant a seedling. Since other configurations and operations are substantially the same as those of the above-described embodiment, description thereof is omitted.

FIGS. 13 to 19 show an embodiment of the invention of claim 3 and an invention of claims 7 to 8, wherein the bottom wall plate 2 and the upright wall plate 3 of the retaining wall block 1 are arranged at right angles. In addition, a reinforcing rib 4 is formed between the two at the center in the width direction. Six holes 5 are formed in the shape of a rectangular window hole vertically and horizontally. The pocket portion 6 communicating with the entire opening area of the hole portion 5 is formed so as to have a trapezoid shape that becomes narrower as the horizontal cross section of the surrounding wall 7 moves toward the rear surface side. The upper surface opening 16 of the pocket 6 opens straight upward. In the vegetation soil accommodating portions formed in the upper, middle, and lower three steps, the front wall portion of the surrounding wall 7 is aligned and continuous in the same step.

Retaining wall block 1 is precast molded with reinforced concrete at the factory. A crushed stone foundation 11 is formed on the excavation bottom of the front surface portion of the slope 10, and a concrete foundation 12 is horizontally formed on the upper surface of the crushed stone foundation 11. In the retaining wall block 1 carried into the site, the bottom wall slab 2 is placed on the concrete foundation 12, and the standing wall slab 3 is arranged vertically.

A plurality of left and right retaining wall blocks 1, 1 are joined to each other by using an appropriate connecting member, and in a space surrounded by the bottom wall slab 2, the standing wall slab 3, and the excavation surface of the slope 10. The earth and sand are backfilled up to the top of the standing wall plate 3.
After the construction of the retaining wall, the soil 5 in the hole 5 and the pocket 6 serving as the vegetation soil accommodating portion is replaced with soil suitable for the target vegetation. When the initial slope soil 13 is suitable for the target vegetation, it is used as it is as vegetation soil. In the vegetation soil, seeds of the desired vegetation can be mixed with nutrients and placed.

Vegetation planted in the vegetation soil as seeds or seedlings grows by absorbing nutrients and moisture in the vegetation soil, and the roots extend into the slope soil, thereby absorbing nutrients and moisture from the slope soil. Roots in the sloped soil. The stem extends from the pocket portion 6 and the hole portion 5 to the front side of the upright wall plate 3 and improves the concrete wall surface by greening.

If the overall size of the designed L-type retaining wall block 1 is so large that it will not fit in the loading platform of a normal cargo truck, the concrete will be constructed and ready-mixed concrete will be placed on-site to hold the retaining wall block. 1 is molded. In either the precast molding or the on-site casting molding, the standing wall plate 3 is generally formed vertically, but may be formed at a slightly obtuse angle depending on conditions such as the soil texture of the slope.

FIG. 17 relates to the invention of claim 7, and a sucking prevention material 14 in the form of a mesh sheet made of metal, plastic or cloth is disposed so as to cover the entire back surface of the upright wall plate 3. The suction preventing material 14 is fixed to the standing wall plate 3 with an adhesive or the like over the entire surface or an appropriate place and length. The sucking prevention material 14 closes the upper surface opening 16 of the pocket portion 6 to the extent that moisture can pass through, thereby preventing the outflow of the sloped soil accompanying drainage.

The roots of the plant extend from the mesh slits of the sucking-inhibiting material 14 into the sloped soil 13, and the roots of the vegetation are entangled with the sucking-inhibiting material 14, so that the vegetation is erected through the sucking-inhibiting material 14. Therefore, scouring and dropping off of vegetation by rain water flowing down the outer surface side of the upright wall plate 3 is prevented. Since other configurations and operations are substantially the same as those of the above-described embodiment, description thereof is omitted.

FIG. 19 relates to the invention of claim 7, and the vegetation sandbag 15 encloses vegetation seeds, soil components and nutrients. The sandbag itself is made of a mesh sheet material made of cloth or plastic, and the vegetation sandbag 15 closes the lower surface opening 8 of the pocket portion 6 to the extent that moisture can pass, and accompanies drainage of the slope soil. Is preventing the outflow.

The vegetation germinated in the vegetation sandbag 15 extends through the mesh slits of the vegetation sandbag 15 into the slope soil, and the stalk extends through the mesh slits of the vegetation sandbag to the outside. Green the front side. Instead of mixing plant seeds in the vegetation sandbag 15, plant seeds can be sown on the vegetation sandbag 15, or an appropriate portion of the surface portion of the sandbag 15 can be cut to plant a seedling. Since other configurations and operations are substantially the same as those of the above-described embodiment, description thereof is omitted.

20 to 26 show one embodiment of the invention of claim 4 and inventions of claims 9 to 10, wherein the bottom wall plate 2 and the standing wall plate 3 of the retaining wall block 1 are arranged at right angles. In addition, a reinforcing rib 4 is formed between the two at the center in the width direction.
The vegetation soil accommodating part is formed in two upper and lower stages, and the upper vegetation soil part is formed in the same manner as that according to the invention of claim 2. The lower vegetation soil container is according to the invention of claim 4. Two holes 5 of the lower vegetation soil accommodating portion are formed in a rectangular window hole shape on the left and right. The pocket portion 6 communicating with the entire opening area of the hole portion 5 is formed to have a half trapezoidal shape in which the horizontal cross section of the surrounding wall 7 becomes narrower toward the front side. The two left and right surrounding walls 7 form a single trapezoidal horizontal section adjacent to each other. The upper surface opening 16 of the pocket 6 opens straight upward. The lower surface opening 17 of the pocket 6 opens straight to the bottom ground 18.

Retaining wall block 1 is precast molded at the factory. A crushed stone foundation 11 is formed on the bottom ground 18 of the slope 10, and a concrete foundation 12 is horizontally formed on the upper surface of the crushed stone foundation 11. In the retaining wall block 1 carried into the site, the bottom wall slab 2 is placed on the concrete foundation 12, and the standing wall slab 3 is arranged vertically.

A plurality of left and right retaining wall blocks 1, 1 are joined to each other, and earth and sand are placed in the space surrounded by the bottom wall slab 2, the standing wall slab 3 and the excavation surface of the slope 10. It is backfilled to the end. After the construction of the retaining wall, the soil 5 in the hole 5 and the pocket 6 serving as the vegetation soil accommodating portion is replaced with soil suitable for the target vegetation. When the initial slope soil 13 is suitable for the target vegetation, it is used as it is as vegetation soil. In the vegetation soil, seeds of the desired vegetation can be mixed with nutrients and placed.

Vegetation planted in the vegetation soil as seeds or seedlings grows by absorbing nutrients and moisture in the vegetation soil, and the roots extend into the slope soil through the hole part 5, so that It absorbs nutrients and moisture, and also roots in sloped soil. Alternatively, part of the root also extends from the lower surface opening 17 of the pocket portion 6 to the bottom ground 18. The stem extends from the upper surface opening 16 of the pocket portion 6 to the front side of the upright wall plate 3 and improves the concrete wall surface by greening.

When the design dimension of the L-type retaining wall block 1 is so large that it does not fit on the loading platform of a normal cargo truck, the formwork is performed and ready-mixed concrete is cast on site to form the retaining wall block 1. In either the precast molding or the on-site casting molding, the standing wall plate 3 is generally formed vertically, but may be formed at a slightly obtuse angle depending on conditions such as the soil texture of the slope.

FIG. 24 relates to the invention of claim 9, and a suction prevention material 14 in the form of a mesh sheet made of metal, plastic or cloth is disposed so as to cover the entire back surface of the upright wall plate 3. The suction preventing material 14 is fixed to the standing wall plate 3 with an adhesive or the like over the entire surface or an appropriate place and length. The sucking prevention material 14 closes the lower surface opening 8 and the hole 5 of the pocket 6 to such an extent that moisture can pass through and prevents the outflow of the sloped soil accompanying drainage.

The roots of the plant extend from the mesh slits of the sucking-inhibiting material 14 into the sloped soil 13, and the roots of the vegetation are entangled with the sucking-inhibiting material 14, so that the vegetation is erected through the sucking-inhibiting material 14. Therefore, scouring and dropping off of vegetation by rain water flowing down the outer surface side of the upright wall plate 3 is prevented. Since other configurations and operations are substantially the same as those of the above-described embodiment, description thereof is omitted.

FIG. 26 relates to the invention of claim 10, wherein the vegetation sandbag 15 encloses vegetation seeds, soil components and nutrients. The sandbag itself is made of a mesh sheet material made of cloth or plastic, and the vegetation sandbag 15 closes the lower surface opening 8 of the pocket portion 6 to the extent that moisture can pass, and accompanies drainage of the slope soil. Is preventing the outflow.

The vegetation germinated in the vegetation sandbag 15 extends through the mesh slits of the vegetation sandbag 15 into the slope soil, and the stalk extends through the mesh slits of the vegetation sandbag to the outside. Green the front side. Instead of mixing plant seeds in the vegetation sandbag 15, plant seeds can be sown on the vegetation sandbag 15, or an appropriate portion of the surface portion of the sandbag 15 can be cut to plant a seedling. Since other configurations and operations are substantially the same as those of the above-described embodiment, description thereof is omitted.

It is a front view of the retaining wall block used in one embodiment of the invention of claim 1 and invention of claim 2. It is a rear view of the retaining wall block of FIG. It is a right view of the retaining wall block of FIG. It is a top view of the retaining wall block of FIG. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a longitudinal cross-sectional view of the installation state of the retaining wall block of FIG. It is a right view of the retaining wall block used for one Example of invention of Claim 5. It is a bottom view of the retaining wall block of FIG. It is a longitudinal cross-sectional view of the installation state of the retaining wall block of FIG. It is a longitudinal cross-sectional view of the installation state of the retaining wall block used for one Example of invention of Claim 6. FIG. 12 is a horizontal sectional view of the retaining wall block of FIG. 11. It is a front view of the retaining wall block used for one Example of invention of Claim 2. It is a right view of the retaining wall block of FIG. It is a rear view of the retaining wall block of FIG. It is a top view of the retaining wall block of FIG. It is CC sectional view taken on the line when the invention of Claim 7 is applied to the retaining wall block of FIG. It is the DD sectional view taken on the line of FIG. It is a longitudinal cross-sectional view of the installation state when the invention of Claim 8 is applied to the retaining wall block of FIG. It is a front view of the retaining wall block used for one Example of invention of Claim 4. It is a right view of the retaining wall block of FIG. It is a rear view of the retaining wall block of FIG. It is a top view of the retaining wall block of FIG. It is the EE sectional view taken on the line when the invention of Claim 9 is applied to the retaining wall block of FIG. It is the FF sectional view taken on the line of FIG. It is a longitudinal cross-sectional view of the installation state when the invention of Claim 10 is applied to the retaining wall block of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Retaining wall block 2 Bottom wall slab 3 Standing wall slab 4 Reinforcement rib 5 Hole 6 Pocket part 7 Enclosure 8 Bottom opening 9 Vegetation 10 Slope 11 Crushed stone foundation 12 Concrete foundation 13 Soil 14 Soil prevention material 15 Vegetation sandbag 16 Upper surface opening 17 Lower surface opening 18 Bottom ground

Claims (11)

  It is installed on the bottom ground of the slope, and is connected to the bottom wall slab that penetrates from the front part of the slope to a certain depth and the front edge of the bottom wall slab over the entire width, and has a height corresponding to almost the entire height of the slope The standing wall slab consists of a standing wall slab that is continuous from the bottom end to the top edge. The standing wall slab and the bottom wall slab are rigid by precast molding at the factory or on-site casting. The vegetation soil storage part that is integrally formed as an object and communicates with the front or bottom ground of the slope is formed to penetrate the standing wall plate back and forth, and the vegetation fixed to the vegetation soil storage part is raised. Retaining wall structure for slope planting that is exposed on the front side of the wall plate. The vegetation soil container is composed of one or a plurality of holes penetrating the standing wall plate back and forth, and a pocket portion formed on the rear surface side of the standing wall plate so as to communicate with the hole portion. 2. The retaining wall structure for slope planting according to claim 1, wherein a peripheral side surface of the pocket portion is surrounded by a surrounding wall, and a downward opening is formed on the lower surface. The vegetation soil container is composed of one or a plurality of holes penetrating the standing wall plate in the front-rear direction, and a pocket portion formed in communication with the hole on the front side of the standing wall plate. 2. The retaining wall structure for slope planting according to claim 1, wherein the pocket portion is surrounded by a surrounding wall and an upward opening is formed on the upper surface. The vegetation soil container is composed of one or a plurality of holes penetrating the standing wall plate in the front-rear direction, and a pocket portion formed in communication with the hole on the front side of the standing wall plate. 2. The pocket portion according to claim 1, wherein a peripheral side surface of the pocket portion is surrounded by a surrounding wall, an upward opening is formed on the upper surface, and a downward opening facing the bottom ground is formed on the lower surface. Retaining wall structure for slope planting.   The slope wall retaining wall structure according to claim 2, wherein a material for preventing slope soil suction is disposed on the rear side of the standing wall plate so as to cover the lower surface opening of the pocket portion.   The retaining wall structure for slope planting according to claim 2, wherein a vegetation sandbag is filled in a lower surface opening of the pocket portion.   The retaining wall structure for slope revegetation according to claim 3, wherein a material for preventing suction of sloped soil is disposed on the rear side of the standing wall slab so as to cover the hole.   The retaining wall structure for slope planting according to claim 3, wherein one or both of the bottom portion of the pocket portion and the hole portion is filled with a vegetation sandbag.   5. The retaining wall structure for slope planting according to claim 4, wherein a material for preventing suction of sloped soil is disposed on the rear side of the standing wall plate so as to cover the hole.   The sloped wall retaining wall structure according to claim 4, wherein one or both of the bottom of the pocket and the hole is filled with a vegetation sandbag.   The support for slope planting according to claim 2, 5 or 6, wherein the position of the lower end surface of the surrounding wall of the pocket portion is arranged below the position of the lower side surface of the hole portion. Wall structure.

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