JPH11172703A - Block for protecting slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the labor and the cost for protection and management of vegetation plants, and to ensure the stability of a block itself by forming an earth filling space and a communication passage of the earth filling space with the natural ground in a box-shaped block body whose upper surface is opened, and forming a backfill receiving body on a lower end part on the rear side in rearwardly expanded shape. SOLUTION: A block A for protecting a slope comprises a box-shaped block body 1 whose upper surface is opened, and a backfill receiving body 10 which is rearwardly expanded from a lower end part on the rear side of the block body 1 in an integrated manner with each other by concrete. A longitudinal partition 2 is fitted in the inner space of the block body 1 in a freely inserting manner approximately in the perpendicular direction from the upper surface opening side, and an earth filling space 3 and a discharged water temporary storage space 4 are formed before and behind the longitudinal partition 2. A communication passage 5 to communicate the earth filling space 3 with the natural ground D is formed in a lower part of a rear wall 1a, and a discharged water flow-in hole 6 to flow the underground water in the natural ground D in the discharged water temporary storage space 4 as the discharged water, is formed in an upper part of the rear wall 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a revetment block,
The present invention relates to a slope protection block for protecting a slope of a ground such as a retaining wall block and a retaining block.

[0002]

2. Description of the Related Art Conventionally, as one form of a slope protection block, a block main body is formed in a box shape having an upper surface opening, and a large number of blocks are stacked along a slope on the ground to form a bank protection wall or the like. In addition, there is a construction in which the block body is filled with soil so that the block body can be used as a vegetation block.

[0003]

However, in the above-described slope protection block, the soil and ground filled in the block body are cut off by the block body, and the block body is filled. Since the soil is easily affected by the outside temperature, moisture and nutrients in the filling soil are insufficient, and the growth of plants and bacteria such as plants and bacteria vegetated on the filling soil is hindered. It is troublesome and expensive.

[0004] Further, when a revetment retaining wall or the like is constructed by the above-described slope protection block, groundwater discharged from the ground stagnates on the back surface of the revetment retaining wall or the like, and earth pressure acting on the retaining wall or the like. (Water pressure) increases, causing landslides.

[0005]

Therefore, according to the present invention, a box-shaped block body having at least a partially open upper surface is provided.
A soil filling space is formed, and a communication passage connecting the soil filling space and the ground is formed in the block main body, and a backfill material receiver is formed in a rearwardly extending lower end at the rear lower end of the block main body. It is an object of the present invention to provide a slope protection block characterized by the above.

The present invention also has the following configuration.

(1) A drainage inflow hole communicating with the ground is formed in the block body, one end of a drainage channel is connected to the drainage inflow hole, and the other end of the drainage channel is opened to the outside of the block body. And a backing material receiver is formed at the rear lower end of the block main body so as to protrude rearward.

(2) The drain passage is formed in the block body, and a temporary drain space is formed in the middle of the drain passage.

(3) The drain outlet formed at the other end of the drain passage is located above the drain inlet connected to one end of the drain passage.

(4) The drain outlet is formed at the upper end of the side wall that forms the side of the temporary drain space.

(5) A soil filling space and a temporary drainage space are formed in the block main body via a partition wall.

(6) A space communication passage for communicating the soil filling space and the temporary drainage space is formed in the front-rear direction partition wall.

(7) The temporary storage space for drainage is filled with lumps such as chestnut stone and gravel.

(8) A left-right partition wall is provided in the soil filling space, and the left-right partition wall is arranged in a direction substantially perpendicular to the direction of extension of the slope of the ground.

[0015]

Embodiments of the present invention will be described below.

That is, in the slope protection block according to the present invention, a soil filling space is formed in a box-shaped block main body having at least a partially open upper surface, and the soil filling space and the ground are formed in the block main body. Is formed.

[0017] In this manner, the soil filled in the soil filling space and the ground can be connected to each other through the communication passage, and the influence of the outside temperature of the soil filled in the soil filling space can be reduced. Organisms such as plants and bacteria vegetated on the soil filling in the soil filling space can also supply moisture and nutrients from the ground.

[0018] Therefore, despite the provision of the slope protection block, without hindering the natural ecosystem,
The creature can be raised in a natural state, and the labor and cost for protection and management of the creature can be eliminated.

When the communication passage is filled with a lump such as rubble stone or gravel, the flow of air between the soil filled in the soil filling space and the ground is further enhanced, and the filling is performed. The soil and the ground can be activated, and from this point of view, it is possible to ensure a favorable environment for growing organisms.

Then, at the lower rear end of the block body,
Because the backing material receiver is formed in a protruding shape backward,
When a backfill material such as a crusher run or Kuriishi is placed on the backfill material receiver, the backfill material acts as a load on the backfill material receiver and passes through the backfill material receiver. As a result, a negative rotational moment is generated which causes the block body to fall to the rear side, and the resistance falling moment is increased by that amount, so that the falling safety factor is increased and the stability of the block itself can be secured well.

Further, since the backfill material acts as a load on the backfill material receiver, sliding occurs between the vertically stacked blocks, and the lowermost slope protection block and the foundation are not connected to each other. Sliding occurring between them can be prevented, and the stability of the seawall retaining wall itself can be improved.

A drain inflow hole communicating with the ground is formed in the block main body, one end of a drainage flow path is connected to the drainage inflow hole, and the other end of the drainage flow path is opened to the outside of the block main body. That is, a drain outlet communicating with the atmosphere can be formed.

In this way, groundwater from the ground can be discharged from the drainage inflow hole → drainage channel → drainage outflow hole → outside of the block body, and the earth pressure (water pressure) acting on the slope protection block. And the occurrence of problems such as landslides can be prevented.

Here, the drain passage may be formed in the internal space of the block main body, or may be formed so as to penetrate the bottom or the side wall of the block main body.

The drain passage may be formed in the pipe by connecting a pipe to the block body.

The groundwater can be discharged from the upper surface of the block main body, from the front wall of the block main body to outside through a pipe or the like, and can be discharged from the side wall of the block main body in communication with the drain passage. The drainage groove can be formed and formed through the drainage groove.

Further, the drain passage can be formed in the block main body, and a temporary drain retention space can be formed in the middle of the drain passage.

[0028] In this manner, the groundwater flowing from the drainage inflow hole is retained in the temporary drainage retention space, so that the inflow speed of the groundwater can be reduced. When the groundwater flows out of the drainage outflow hole, The soil in the ground can be prevented from being sucked out through the drain passage.

The drain outlet formed at the other end of the drain passage can be disposed above the drain inlet connected to one end of the drain passage.

In this way, by discharging the flowing water in the direction opposite to the direction of gravitational action, it is possible to further enhance the above-described deceleration effect of flowing water and the effect of preventing soil from being sucked out.

The drainage outlet can be formed at the upper end of the side wall that forms the side of the temporary drainage space.

In this way, the drainage can overflow from the drainage outlet along the outer surface of the block body.

Further, a soil filling space and a temporary drainage retaining space can be formed in the block main body via a longitudinal partition wall.

In this way, the earth filling space and the drainage temporary holding space can be simply formed in the block body.

Further, a space communication path for communicating the soil filling space and the temporary drainage space can be formed in the front-rear partitioning wall.

In this way, living organisms can freely move between the earth filling space and the temporary drainage retaining space through the space communication passage, and a comfortable living space can be provided for living organisms.

Therefore, the growth of living organisms can be protected, and the environment for growing vegetated plants can be improved.

In addition, the groundwater containing nutrients discharged from the ground is drained into a drainage inlet → a temporary drainage space → a spatial communication passage →
It can be guided into the soil filling space, and can provide nutrients to the soil filled in the soil filling space.

When rainwater or the like falling on the surface of the soil filled in the soil filling space flows into the temporary drainage storage space, the rainwater or the like is filled in the soil filling space through the space communication passage. The soil can be guided into the soil, and the humidity in the filled soil can be properly secured.

The air between the soil and the ground filled in the soil filling space flows actively also through the space communication passage, the temporary drainage space, and the drainage inflow hole. Can be activated.

Accordingly, also from these points, a favorable environment for growing the vegetated plants can be ensured.

When a backfill material or the like is provided on the slope of the ground, pipes are respectively inserted into the communication passage and the drainage inflow hole of the block main body, and the inside of the block main body and the ground are connected. By connecting them directly, the above-mentioned effects can be secured.

Further, a lump such as rubble stone and gravel can be filled in the temporary drainage retention space.

As described above, when the water is increased, in the temporary drainage space filled with the lump, the effect of preventing the soil from being sucked out of the ground is ensured, and the inflow speed of the wastewater flowing from the ground through the drainage inflow hole is reduced. Can be surely decelerated,
In addition, the drainage from the ground that has flowed in from the drainage inflow hole can be retained.

Also, in normal times, the voids formed between the lump-shaped objects communicate with the atmosphere, and thus the voids are used as living spaces for living things.

Therefore, organisms come and go on the soil filled in the soil-filled space, dropping feces, etc., and leaving dead bodies on the soil, so that they become nutrients of the soil and vegetated. The growth environment of the plant can be improved.

Further, the temporary drainage space, which is in communication with the atmosphere while being filled with lumps, is continuous with the ground through the drainage inlet, functions as a flow path for moisture and nutrients, and contains microorganisms such as bacteria. As a matter of course, it also functions as a passage for the creatures such as moles and snakes to the ground, so that the ecosystem can be kept in a natural state.

Further, a left-right partition wall is provided in the soil filling space, and the left-right partition wall is disposed in a direction substantially perpendicular to the extension direction of the slope of the ground.

In this way, for example, when a river protection wall is constructed by a slope protection block, the soil filling space is arranged in a direction substantially perpendicular to the flow direction of the river by a left-right partition wall. By partitioning, even when the water level of the river rises during a flood, etc., the amount of soil that is filled in the soil filling space is scoured by the flowing water of the river can be suppressed by the left and right partition walls, The sewage of the packed soil is reduced as much as possible, and the vegetation function provided in the block body, and the function of protecting and managing living things can be satisfactorily secured.

[0050]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional side view of a seawall retaining wall Y constructed by stacking slope protection blocks A according to the present invention. B is a rock stone, C is a foundation, D is a ground, F is a plant, G is a filled soil, H is a lump of rock and stone, J is a crown concrete, K is a river, U is a crusher run or a rock stone. It is a backfill material with good water permeability.

As shown in FIGS. 2 to 8, the slope protection block A includes a box-shaped block body 1 having an open upper surface.
The backing material receiver 10 formed in a protruding shape rearward from the rear lower end of the block body 1 is integrally formed of concrete.

The block body 1 has a front-rear partition wall 2 which is inserted into the internal space so as to be freely inserted and removed in a substantially vertical direction from an upper surface opening side, and is attached to the front and rear of the front-rear partition wall 2 respectively. 3 and a temporary drainage retention space 4,
A communication path 5 that connects the soil filling space 3 and the ground D is formed below the rear wall 1a, and groundwater from the ground D is drained into the temporary drain space 4 as drainage above the rear wall 1a. Drainage hole 6 is formed.

Here, the front-rear partition wall 2 may be arranged in a rearwardly inclined posture inclining toward the ground D side.

The block main body 1 is formed by raising the front wall 1b upward and forward from the front end edge of the bottom 1f disposed substantially horizontally so as to be in a forwardly inclined posture. Is formed large. 1c is the guide groove for inserting the partition wall, 1d
Is a vertical groove for filling concrete, 13 is concrete, and 14 is reinforcing steel.

Drainage outflow holes 7, 7 are formed in the upper ends of the left and right side walls 1j, 1j of the block body 1 located on the right and left sides of the upper end of the front-rear partition wall 2, respectively, so as to be recessed. A drain passage 8 is formed by the inflow hole 6, the temporary drainage space 4, and the drainage outflow holes 7, 7, and each drainage outflow hole 7 is located above the drainage inflow hole 6 and arranged. , Are disposed below the upper surface of the soil filling space 3.

Then, the left and right side walls 1j, 1j of the block body 1
On the outer surface of the upper surface, there are formed drainage flow guide vertical grooves 1e, 1e which connect the upper end to the above-mentioned drainage outflow holes 7, 7 and extend forward and downward to the lower end of the block body 1. Flute 1
The drainage overflowing from the drainage outflow holes 7, 7 through the e, 1e is caused to flow down and guide to the drainage vertical guide grooves 1e, 1e formed in the block body 1 located at the lower stage.

Further, as shown in FIG. 11, the lower halves of the left and right side walls are stepped concavely formed on the left and right side walls 1j, 1j of the block body 1 located in front of the vertical grooves 1e, 1e for drainage flow down guide. The front and lower drain guide surfaces 1p, 1p are formed to form the front and lower drain guide surfaces of the block bodies 1, 1 adjacent to each other on the left and right.
When the drainage gap t is formed by 1p, 1p, and the amount of drainage is large, a part of the drainage overflows to the drainage gap t side, and through the drainage gap t, the front side and the lower side of the block body 1 So that it can be discharged to

The front-rear partition wall 2 is formed by connecting the upper and lower partition wall forming bodies 2a, 2b in the vertical direction, and forms a gap between the contact surfaces of the two partition wall forming bodies 2a, 2b. At the same time, a gap is also formed between the contact surface between the lower partition wall forming body 2b and the bottom 1f of the block body 1, and the gaps are used as the space communication paths 9, 9 to form the space communication paths 9, 9. 9 makes the drainage temporary stay space 4 and the soil filling space 3 communicate with each other.

Further, the backfill material receiver 10 is
The bottom 1f is formed in a rectangular plate shape having substantially the same lateral width and front-rear width as the left-right width and the front-rear width, and haunch portions 11, 11 are formed on the upper surface of the base end.

In this manner, above the backfill material receiver 10,
Further, a backfill space S is formed behind the rear wall 1a of the block body 1, and the backfill space U is filled with the backfill material U.

In this case, the back-filled material U acts on the back-filled material receiver 10 as a load, so that the block main body 1 tries to fall down to the rear side through the back-filled material receiver 10. The rotation moment is generated, and the resistance overturning moment is increased by that amount, so that the overturning safety factor is increased, and the stability of the block itself can be secured well.

Here, the block main body 1 corresponds to FIGS.
As shown in (1), when the seawall retaining wall Y is constructed by stacking, the bottom part 1f of the upper block main body 1 closes the upper surface of the temporary drainage space 4 of the lower block main body 1. .

In this manner, the soil G is filled in the soil filling space 3 and the lump H is filled in the communication passage 5, and the soil filling space 3 and the ground D are communicated through the communication passage 5. In this way, air can be freely circulated and water can be freely exchanged between the filled soil G and the ground D in the soil filling space 3. Thus, a natural air-conditioning effect due to the inflow of air from the soil into the soil filling space 3 and a drainage (drainage) effect from the soil G in the soil filling space 3 to the ground D can be generated.

The soil filling space 3 and the temporary drainage space 4 are also communicated with each other through the space communication passage 9 so that the natural air-conditioning effect due to the inflow of air between the two spaces 3 and 4 and the drainage and drainage Drainage or hydration effect due to inflow of rainwater or the like can be generated.

Further, the groundwater of the ground D is drained, and the drainage inflow hole 6 → the temporary drainage space 4 → the drainage outflow hole 7 → overflows to the outside of the block body 1 so that the drainage can be discharged smoothly. This suppresses drainage from flowing into the soil filling space 3 through the communication passage 5.

At this time, the drainage flowing from the drainage inlet 6 is decelerated when it flows into the temporary drainage space 4 having a larger flow path cross-sectional area than the drainage inlet 6 from the direction opposite to the direction of gravity. Therefore, it is possible to prevent the soil of the ground D from being sucked out through the drain passage 8, and to discharge the wastewater (the groundwater from the ground D and the surface of the filled soil G from the ground D). The rainwater or the like that has flowed down into the temporary drainage space 4 is discharged into the soil filling space 3 through the space communication passages 9, 9. Wastewater containing a large amount of nutrients is supplied, and the growth effect of the vegetated plant F can be enhanced.

Further, in the drainage temporary holding space 4, FIG.
As shown in (1), since the lump H is filled, the effect of preventing the soil from being sucked out can be further enhanced.

Since the upper surface of the temporary drain space 4 is closed by the bottom 1f of the block bodies 1 stacked one above the other, the lump H is not pushed out by the drain water.

As shown in FIG. 1, the slope protection block A disposed in the river K is provided with a lump H in the communication space 5 and the bottom in the soil filling space 3. The upper part in the soil filling space 3 can be used as a fish nest space.

Upper and lower inflow holes 34, 34 are formed in the front left and right sides of the lower surface of the bottom portion 1f, respectively, by recessing the upper portions into upper and lower portions. Immediately above the portion, the upper rainwater inflow holes 34, 34 of the upper block main body 1 are located in opposition to form left and right rainwater inflow passages 36, 36, respectively.

In this way, rainwater, sprinkled water, etc., flow into the temporary drainage space 4 through the left and right side rainwater inflow passages 36, 36 and are discharged from the ground D into the temporary drainage space 4. They are stored together with drainage.

Particularly, in a hot season such as summer, the surface portion of the filled soil is dried and solidified, so that rainwater or sprinkling water does not seep into the filled soil but flows to the surroundings. Rainwater, sprinkled water, and the like that have flowed into the temporary drainage retention space 4 through the inflow passages 36, 36 can be stored in the temporary drainage retention space 4.

As described above, the rainwater, sprinkled water, and the like that have flowed into the temporary drainage holding space 4 can flow to the packed soil G through the space communication passage 9 to wet the packed soil G. The fluid is caused to flow toward the ground D through the drainage inflow hole 6 so that the surface of the ground D can be moistened.

Further, small animals can easily enter and leave the drainage temporary holding space 4 through the respective inflow passages 36 and 36 for rainwater and the like.

Here, the left and right rainwater inflow passages 36, 36 are disposed above the left and right drainage outflow holes 7, 7 so that the drainage in the temporary drainage space 4 is replaced by the left and right rainwater inflow passages 36, 36. , 36 or overflow at the upper edge of the front-rear partition wall 2 so as not to flow into the earth filling space 3 in large quantities.

A stepped concave partition wall insertion guide groove is formed at the center of the rear surface of the front wall 1b of the block main body 1 and at the center of the front surface of the upper partition wall forming body 2a of the front-rear partition wall 2, respectively.
1g, 2c are formed, and a rectangular plate-shaped left-right partition wall 12 extending in the front-rear direction is inserted between the guide grooves 1g, 2c so as to be freely inserted into and removed from the upper opening side of the block body 1.

As described above, by dividing the upper side of the soil filling space 3 into right and left by the left and right partitioning walls 12, the flooding of the river K causes the soil filling space 3 to be flooded during flooding.
The amount of the soil G filled in the inside is scoured by the left and right partitioning walls 12 so that the amount of the soil G that flows out can be reduced as much as possible.

Here, the left and right partitioning wall 12 is disposed only in the upper part of the soil filling space 3 so as to have a function of suppressing the amount of scouring and to form a semicircular concave part 12a in the lower part of the soil filling space 3. Then, the rooting of the vegetated plant F is performed without any trouble.

It is to be noted that a plurality of left-right partition walls 12 can be provided as necessary, and by appropriately arranging them in the block main body 1 in the left-right direction, the effect of suppressing the amount of scouring can be increased. be able to.

The left-right partition wall 12 is arranged so as to intersect with the flow direction of the river K, and has an inclined posture in which the upper edge is arranged on the upstream side and the lower edge is arranged on the downstream side. In this case, the effect of suppressing the scouring amount can be further increased.

The upper end surface 1h of the front wall 1b forming the soil filling space 3 is formed as an inclined surface which is inclined forward and upward from the upper end surfaces 1k, 1k of the left and right side walls 1j, 1j. 1m is the fitting ridge,
1n is a fitting concave strip.

The surface G1 of the soil G filled in the soil filling space 3 covers the upper surface of the front half of the block body 1 as shown in FIGS. The upper surface of the first half can be made externally invisible.

At this time, since the upper surface of the soil filling space 3 can be entirely covered by the surface layer G1, the surface layer G1
The roughness of the river K flowing upward is reduced so that the amount of soil G filled in the soil filling space 3 can be suppressed.

Then, by breeding the plant F on the filling soil G, the front surface of the block body 1 is also covered with the plant F so that the concrete surface of the front wall 1b of the block body 1 is not visible from the outside. it can.

Further, the inner surface of the bottom 1f is formed as an inclined surface having a downward slope toward the ground D, so that the drainage of the soil filling space 3 can smoothly flow down to the ground D. ing.

Further, a drain hole (not shown) is formed in the bottom 1f of the block body 1 for draining to the temporary drain storage space 4 of the lower slope protection block A.
The drainage in the soil filling space 3 and the drainage in the communication passage 5 can also be discharged into the drainage temporary storage space 4 of the lower slope protection block A through drainage holes.

FIG. 12 shows a slope protection block A as another embodiment. In the block A, a pair of left and right communication passages 5 and 5 are formed at lower left and right sides of a rear wall 1a. Thus, a haunch portion 11 is formed between the communication passages 5 and 5.

FIG. 13 and FIG. 14 show a modification of the drainage gap t.

That is, in FIG. 13, the front / lower drain guide surfaces 1p, 1p are formed as inclined surfaces which gradually narrow the left and right widths of the block main body 1 from the upper end side to the lower end side. t is formed in an isosceles triangular shape when viewed from the front, so that the drainage can gradually flow downward and forward from the upper end portions of the vertical grooves for drainage flow-down guidance 1e, 1e.

In FIG. 14, a gate-shaped drainage gap t is formed at the lower end of the block bodies 1, 1 adjacent to each other on the left and right, so that the lower end of the vertical groove 1e, 1e for drainage flow guide is formed. The drainage can be drained downward.

[0092]

According to the present invention, the following effects can be obtained.

(1) According to the present invention, an earth filling space is formed in a box-shaped block main body having at least a partially open upper surface, and the soil filling space and the ground are formed in the block main body. Due to the formation of the communicating passage, the soil filled in the soil filling space and the ground can be connected to each other through the communicating passage, and the outside of the soil filled in the soil filling space can be formed. The influence of the temperature can be reduced, and organisms such as plants and bacteria vegetated on the filling soil in the soil filling space can also supply moisture and nutrients from the ground.

Therefore, despite the arrangement of the slope protection block, the natural ecosystem is not hindered.
The creature can be raised in a natural state, and the labor and cost for protection and management of the creature can be eliminated.

When the communicating passage is filled with a lump such as rubble stone or gravel, the flow of air between the soil filled in the soil filling space and the ground is further increased, and the filling is performed. The soil and the ground can be activated, and from this point of view, it is possible to ensure a favorable environment for growing organisms.

Then, at the rear lower end of the block body,
Because the backing material receiver is formed in a protruding shape backward,
When a backfill material such as a crusher run or Kuriishi is placed on the backfill material receiver, the backfill material acts as a load on the backfill material receiver and passes through the backfill material receiver. As a result, a negative rotational moment is generated which causes the block body to fall to the rear side, and the resistance falling moment is increased by that amount, so that the falling safety factor is increased and the stability of the block itself can be secured well.

Further, since the backfill material acts on the backfill material receiver as a load, sliding occurs between the vertically stacked blocks, and the lowermost slope protection block and the foundation do not move. Sliding occurring between them can be prevented, and the stability of the seawall retaining wall itself can be improved.

(2) According to the second aspect of the present invention, a drainage inflow hole communicating with the ground is formed in the block body, and one end of a drainage channel is connected to the drainage inflow hole. The other end is open to the outside of the block body, that is, the drainage outflow hole communicating with the atmosphere can be formed. And the earth pressure (water pressure) acting on the slope protection block can be reduced, and the occurrence of problems such as landslide can be prevented.

(3) According to the third aspect of the present invention, since the drain passage is formed in the block body and a temporary drain space is formed in the middle of the drain passage, the drain passage is formed from the drain inflow hole. The inflowing groundwater is retained in the temporary drainage retention space, and the inflow speed of the groundwater can be reduced, and when groundwater flows out of the drainage outlet, ground soil is sucked out through the drainage channel. Can be prevented.

(4) According to the fourth aspect of the present invention, the drain outlet formed at the other end of the drain passage is located above the drain inlet connected to one end of the drain passage. Therefore, by discharging the flowing water in a direction opposite to the direction of gravitational force, it is possible to further enhance the above-described flow-water deceleration effect and the soil suction prevention effect.

(5) According to the fifth aspect of the present invention, since the drainage outlet is formed at the upper end of the side wall forming the side of the temporary drainage retention space, the drainage is formed by the drainage outlet. The overflow can be performed more along the outer surface of the block body.

(6) According to the sixth aspect of the present invention, since the soil filling space and the temporary drainage holding space are formed in the block main body via the front and rear partition walls, the soil filling space is formed in the block main body. And a temporary drainage space can be formed with a simple structure.

(7) According to the seventh aspect of the present invention, since the front and rear partition walls have a space communication path communicating the soil filling space and the temporary drainage space, organisms can communicate with the space communication path. Can freely move between the soil filling space and the temporary drainage holding space through the space, and can provide a comfortable living space for living things.

Therefore, the growth of living organisms can be protected, and the environment for growing vegetated plants can be improved.

In addition, the groundwater containing nutrients discharged from the ground is drained into a drainage inlet → a temporary drainage space → a spatial communication passage →
It can be guided into the soil filling space, and can provide nutrients to the soil filled in the soil filling space.

When rainwater or the like flowing down to the surface of the filled soil filled in the soil filling space flows into the temporary drainage storage space, the rainwater or the like is filled in the soil filling space through the space communication passage. The soil can be guided into the soil, and the humidity in the filled soil can be properly secured.

The air between the soil and the ground filled in the soil filling space flows actively also through the space communication passage, the temporary drainage holding space and the drainage inflow hole, and the soil and the ground are filled. Can be activated.

Therefore, also from these points, it is possible to favorably secure the growth environment of the vegetated plants.

(8) In the present invention according to the eighth aspect, since the lump of drainage is filled with lump such as rubble stone and gravel, the lump of temporary lump is filled with the lump of the lump at the time of rising water. , While ensuring the effect of preventing soil from being sucked out,
The inflow speed of the wastewater flowing from the ground through the drainage inflow hole can be reliably reduced, and the wastewater from the ground flowing from the drainage inflow hole can be retained.

[0110] In normal times, the voids formed between the aggregates communicate with the atmosphere, so that the voids are used as living spaces for living things.

Therefore, organisms come and go on the soil filled in the soil-filled space, dropping feces and the like on the filled soil and leaving dead bodies, which become nutrients of the filled soil and vegetated. The growth environment of the plant can be improved.

Further, the temporary drainage space which is in communication with the atmosphere while being filled with the lumps is continuous with the ground through the drainage inlet, functions as a flow path for water and nutrients, and has microorganisms such as bacteria. As a matter of course, it also functions as a passage for the creatures such as moles and snakes to the ground, so that the ecosystem can be kept in a natural state.

(9) According to the ninth aspect of the present invention, the left-right partition wall is provided in the soil filling space, and the left-right partition wall extends in a direction substantially perpendicular to the extension direction of the slope of the ground. Due to the arrangement, for example, when a river protection wall is constructed by a slope protection block, the soil filling space is arranged in a direction substantially perpendicular to the river flow direction by a left-right partition wall. By partitioning, even when the water level of the river rises during floods, etc., the amount of soil that has been filled into the soil filling space is scoured by the flowing water of the river can be suppressed by the horizontal partition wall, Minimize soil loss,
The vegetation function provided in the block body, and the function of protecting and managing living things can be well secured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional side view of a seawall retaining wall constructed using a slope protection block according to the present invention.

FIG. 2 is an explanatory sectional side view of a part of the revetment retaining wall.

FIG. 3 is a front view of a slope protection block.

FIG. 4 is a rear view of the slope protection block.

FIG. 5 is a plan view of the slope protection block.

FIG. 6 is a bottom view of the slope protection block.

FIG. 7 is a side view of the block for protecting the slope.

FIG. 8 is a cross-sectional side view of the slope protection block.

FIG. 9 is a plan view of the slope protection block in a state where the front and rear partition walls and the left and right partition walls are attached.

FIG. 10 is a cross-sectional side view of the slope protection block.

FIG. 11 is a front view of a drainage gap.

FIG. 12 is a rear view of a slope protection block according to another embodiment.

FIG. 13 is a front view as a first modification of the drainage gap.

FIG. 14 is a front view as a second modification of the drainage gap.

[Explanation of symbols]

 A Block for slope protection 1 Block body 2 Front-rear partition wall 3 Soil filling space 4 Temporary drainage space 5 Communication passage 6 Drainage inflow hole 7 Drainage outflow hole 8 Drainage channel

Claims (9)

[Claims] 1. A soil filling space is formed in a box-shaped block main body having at least a partially open upper surface, and a communication passage for communicating the soil filling space with the ground is formed in the block main body. A slope protection block characterized in that a backfill material receiver is formed in the rear lower end of the block body so as to protrude rearward. 2. A drain inflow hole communicating with the ground is formed in the block main body, one end of a drainage flow path is connected to the drainage inflow hole, and the other end of the drainage flow path is opened to the outside of the block main body. 2. The slope protection block according to claim 1, wherein a drainage outflow hole is formed, and a backfill material receiver is formed in a rearward lower end portion of the block body so as to protrude rearward. 3. The slope protection block according to claim 1, wherein the drain passage is formed in the block main body, and a temporary drain space is formed in a middle portion of the drain passage. 4. The drainage outflow hole formed at the other end of the drainage flow passage is located above the drainage inflow hole connected to one end of the drainage flow passage. A slope protection block according to any one of the above. 5. The slope protection block according to claim 4, wherein the drainage outflow hole is formed at an upper end portion of a side wall forming a side of the temporary drainage retention space. 6. The slope protection block according to claim 3, wherein an earth filling space and a temporary drainage holding space are formed in the block main body via a longitudinal partition wall. . 7. The slope protection block according to claim 6, wherein a space communication passage communicating between the soil filling space and the temporary drainage space is formed in the front-rear partition wall. 8. The slope protection block according to any one of claims 3 to 7, wherein the temporary drainage space is filled with a lump such as rubble stone or gravel. 9. A horizontal partition wall is provided in the soil filling space, and the horizontal partition wall is disposed in a direction substantially perpendicular to a direction of extension of a slope of the ground.
6. The slope protection block according to any one of 6.