JPH11117313A - Protection block for surface of slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the function of protection blocks for the surface of a slope by providing a passage communicating with the ground in a space filled with soil, of block bodies and right and left partition walls crossing the extending direction of the slope surface of the ground at right angles. SOLUTION: A space filled with soil and a space temporarily retaining drain are formed at the front and rear sides of a partition wall 2 of the front and rear direction, removably fitted from the upper face opening of the block bodies 1. A connection passage 5 is formed between the space filled with soil and the ground in the lower part of the rear wall 1a and a drain inflow hole 6 conducting the underground water to the space temporarily retaining drain is formed at the upper part of the wall 1a. The underground water is drained to the outside of the body 1 through a drain outflow hole 7 formed in the wall 2. Soil G is charged in the space to be filled with soil and lumps H are charged in the space temporarily retaining drain and the connection passage 5. The right and left partition walls 10 are removably fitted from the upper opening, between the front wall and the partition wall 2 to prevent scouring of the soil G caused by river streams at a flood. In this way, water and nourishment can be replenished from the ground to vegetation planted in the filled soil and the soil pressure acting on the protection blocks for the slope can be reduced.

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.

Further, when a revetment wall or the like of a river 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 acts on the retaining wall or the like. As the earth pressure (water pressure) increases, it causes landslides.

[0005] When the water level of a river rises during a flood or the like, the soil filled in the block body is scoured by the running water of the river, a large amount of the filled soil is lost, and the block body has a vegetation function. There is also a problem that it does not work.

[0006]

Therefore, according to the present invention, a box-shaped block body having at least a partially open upper surface is provided.
Forming a soil filling space, forming a communication passage communicating the soil filling space and the ground in the block main body, providing a left-right partition in the soil filling space, and the left-right partition, It is an object of the present invention to provide a block for protecting a slope, wherein the block is arranged in a direction substantially perpendicular to the direction of extension of the slope of the ground.

The present invention also has the following configuration.

(1) The left and right partition walls can be inserted into and detachably attached to the block main body from the upper opening side.

(2) A drainage 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 outside the block main body. That the drainage outlet for drainage is formed.

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

(4) 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.

(5) The drainage outflow hole is formed at the upper end of the side wall that forms the side of the temporary drainage space.

(6) The drainage outflow hole is arranged at a position lower than the upper surface of the soil filled in the soil filling space.

(7) A soil filling space and a temporary drainage holding space are formed in the block main body through a longitudinal partition wall.

(8) The partition wall in the front-rear direction can be detachably inserted into and attached to the block main body from the opening on the upper surface.

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

(10) The front and rear direction partition wall is formed by connecting a plurality of partition wall forming bodies in a vertical direction.

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

[0019]

Embodiments of the present invention will be described below.

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

[0021] 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.

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 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.

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

In this way, for example, when a river revetment retaining 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.

Further, the left-right partition wall can be detachably inserted into and attached to the block main body from the upper opening side.

In this manner, the left and right partition walls can be attached and detached as necessary, and the attachment and detachment work can be easily performed by inserting and removing the attachment walls in the vertical direction.

In this case, a plurality of left-right partition walls can be arranged at intervals in the left-right direction in the soil filling space as required, and the effect of suppressing the scouring amount by the left-right partition walls can be provided. Can be appropriately increased.

Further, a drainage inflow hole communicating with the ground is formed in the block 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 body. That is, a drain outlet communicating with the atmosphere can be formed.

In this way, groundwater in 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 is obtained. And the occurrence of problems such as landslides can be prevented.

An earth filling space and a drainage channel may be formed in the block body.

In this case, the drainage from the ground is drained from a drain channel having good water permeability, and the water pressure action on the soil filled in the soil filling space can be reduced. The blowing of soil 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 can be formed in the pipe by arranging a pipe in 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, or 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.

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

In this manner, the groundwater flowing from the drainage inflow hole is retained in the temporary drainage space to reduce the inflow speed of the groundwater, and 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 located above the drain inlet connected to one end of the drain passage.

By discharging the flowing water in the direction opposite to the direction of gravitational action in this manner, the above-mentioned deceleration effect of the flowing water and the effect of preventing the suction of soil can be further enhanced.

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

In this way, the drainage can be discharged to the outside of the block body through the drainage outlet.

Further, the drainage outlet can be arranged at a position lower than the upper surface of the soil filled in the soil filling space.

In this way, it is possible to prevent the wastewater discharged from the drainage outflow hole from directly flowing into the soil filling space in the soil filling space, and to prevent rainwater that has fallen into the soil filling space. Then, it can be made to flow into the drainage temporary storage space side, and can flow from the drainage temporary storage space to the ground side through the drainage inflow hole.

Further, the earth filling space and the temporary drainage space can be formed in the block main body via the front and rear partition walls.

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

Further, the front-rear partitioning wall can be detachably inserted into the block main body from the opening on the upper surface and can be attached.

In this manner, the block main body can be easily formed.

By forming a gap between the lower end face of the front-rear partition wall and the upper face of the bottom of the block body, air is supplied to the soil filled in the soil filling space from the temporary drainage space through the gap. It is possible to supply and prevent the filled soil from flowing out from the soil filling space into the temporary storage space for drainage, and efficiently discharge excess water in the soil to the temporary storage space for drainage. Kind of traffic.

Further, a space communication passage for communicating the earth 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 soil filling space and the temporary drainage 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 to provide nutrients to the soil filled in the soil filling space.

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

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

Further, the rainwater that has poured into the soil filled in the soil filling space can flow into the drainage temporary holding space side, and can flow from the drainage temporary holding space to the soil filling space side through the space communication passage. .

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 to each other. By connecting them directly, the above-mentioned effects can be secured.

Further, the front-back direction partition wall can be formed by connecting a plurality of partition wall forming bodies in a vertical direction.

In this manner, the weight of the partition wall forming body as a single unit is reduced, and the operation of forming the front and rear partition walls formed by inserting the partition wall into the block body can be easily performed manually. A gap may be formed between the contact surfaces of the partition wall forming bodies located above and below, and the gap may be used as a spatial communication path.

In addition, the temporary storage space for drainage can be filled with lump such as chestnut stone or gravel.

In this way, 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 surely reduced. And the wastewater can be retained.

The space formed between the clumps and communicating with the atmosphere is used as a living space 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.

Moreover, 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 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.

By filling the lumps, the effect of delaying the drainage from the temporary drainage holding space to the soil filling space can be provided, and the drainage is continued little by little through the space communication passage. It can be supplied to the filling soil inside, and the growth environment of the vegetated plants can be secured well.

[0065]

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

FIG. 1 shows a seawall retaining wall Y constructed by stacking slope protection blocks A according to a first embodiment of the present invention.
2 is a sectional side view of the seawall retaining wall Y. FIG.
B is the foundation concrete, C is the foundation block, D is the ground,
E is a backfill material such as a crusher orchid, F is a plant, G is a filled soil, H is a lump such as chestnut or crushed stone, J is a crown concrete, and K is a river.

Slope protection block A as first embodiment
Is formed of concrete, and as shown in FIGS. 2 to 10, a front-rear partition wall 2 is formed in a box-shaped block main body 1 having an open upper surface from a top opening side of the block main body 1 in a substantially vertical direction. A soil filling space 3 and a temporary drainage space 4 are formed at the front and rear of the front-rear direction partition wall 2 respectively, and the soil filling space 3 and the ground are formed below the rear wall 1a. A communication passage 5 communicating with the mountain D is formed, and a drainage inflow hole 6 for allowing the groundwater of the ground D to flow into the temporary drainage space 4 as drainage is formed above the rear wall 1a.

Here, the front-rear partition wall 2 can be disposed 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 so as to be in a forwardly inclined posture, so that the upper end opening surface of the soil filling space 3 is formed large. 1c is a guide groove for inserting a partition wall, 1d is a vertical groove for filling concrete, 13 is concrete, 14 is a reinforcing bar, and 15 is a river communication hole.

A drain outflow hole 7 is formed in each of the right and left sides of the upper end of the partition wall 2 in a concave shape, and the drainage outflow hole 6, the temporary drainage space 4, and the drainage outflow hole 7 form the drainage outflow hole 7. A passage 8 is formed, and the drainage outflow hole 7 is located above the drainage inflow hole 6 and is located below the top surface of the soil filling space 3. 1e is a vertical groove for drainage flow guide.

Further, the front-rear partition wall 2 is formed by connecting the upper and lower partition wall forming members 2a and 2b in the vertical direction, and a gap is formed between the contact surfaces of the two partition wall forming members 2a and 2b. At the same time, a gap is also formed between the contact surfaces between the lower partition wall forming body 2b and the bottom 1f of the block main body 1, and both gaps are connected to the space communication passage 9,
9, the temporary drainage space 4 and the soil filling space 3 communicate with each other through the two space communication passages 9, 9.

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, so that the soil filling space 3 and the ground D are communicated through the communication passage 5. The communication between the ground D and the ground D in the filling space 3 allows air to flow freely and water supply to each other freely. A natural air-conditioning effect due to the inflow of air into the soil filling space 3 and a drainage (draining) effect from the filling soil G in the filling space 3 to the ground D can be generated.

Then, the filling space 3 and the drainage temporary holding space 4
Can also be communicated through the space communication passage 9,
The natural air-conditioning effect due to the inflow of air between the two spaces 3 and 4 and the drainage or hydration effect due to the inflow of drainage or rainwater 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 the drainage from flowing into the 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 drainage flow path 8, and the drainage in the temporary drainage retention space enters the soil filling space 3 through the space communication passages 9, 9. Since the soil G filled in the soil filling space 3 is discharged, 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 drainage 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 drainage.

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

In addition, lower rainwater inflow holes 32 and 33 are respectively formed in the lower left and right side portions of the front and rear direction partition wall 2 so as to be concavely cut downward, and the front end left and right side portions of the lower surface of the bottom 1f are respectively formed. The upper rainwater inlet holes 34, 35 are formed by notching upwards in a concave shape. The upper rainwater inlet holes 32, 33 of the upper block body 1 are located directly above the lower rainwater inlet holes 32, 33 of the lower block body 1. 34, 35 are located in opposition to form inflow paths 36, 37 for rainwater on the left and right sides, respectively.

In this manner, rainwater, sprinkling water, etc. are allowed to flow into the temporary drainage space 4 through the left and right side rainwater inflow passages 36, 37 and discharged from the ground D into the temporary drainage space 4. They are stored together with drainage.

In particular, in hot seasons 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 and flows to the surroundings. Rainwater, sprinkled water, etc., which have flowed into the temporary drainage retention space 4 through the inflow passages 36 and 37, can be stored in the temporary drainage retention space 4.

The rainwater, sprinkled water, etc., which have flowed into the temporary drainage retaining space 4 are caused to flow toward the ground D through the drainage inlet 6 so that the surface of the ground D can be wiped.

The small animals can easily enter and leave the drainage temporary holding space 4 through the rainwater inflow paths 36 and 37.

Here, the left and right rainwater inflow passages 36 and 37 are disposed above the left and right drainage outflow holes 7 and 7 so that the drainage in the temporary drainage space 4 is changed to the left and right rainwater inflow passages 36 and 37. , 37, or by overflowing the upper end line of the longitudinal 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 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-like left-right partition wall 10 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.

In this way, by dividing the upper side of the soil filling space 3 into right and left by the left and right partitioning walls 10, as shown in FIG. The amount by which the soil G filled in the inside is scoured is suppressed by the left and right partition walls 10, so that the amount of the outflow of the filled soil G can be reduced as much as possible. 11
Is an upper surface imaginary line of the filled soil G formed by scouring when the left-right partition wall 10 is provided, and 12 is a right-left partition wall 10
Is not provided, an imaginary upper surface line P of the filling soil G formed by scouring is the flow direction of the river K.

Here, the left-right partition wall 10 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 at the lower part of the soil filling space 3, The tensioning is done without any problems.

A plurality of left-right partition walls 10 can be provided as necessary. By arranging them at appropriate intervals in the left-right direction in the block main body 1, the effect of suppressing the amount of scouring can be increased. be able to.

The horizontal partition wall 10 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.

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

As shown in FIGS. 1 to 3, 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 main body 1 as shown in FIGS. The upper surface of the first half can be made externally invisible.

At this time, as shown in FIGS. 1 and 11, since the upper surface of the front half of the block body 1 can be entirely covered by the surface layer G1, the roughness of the river K flowing on the surface layer G1 can be improved. The soil G filled in the soil filling space 3 with the degree reduced
So that the amount of scour can be reduced.

Then, by propagating 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.

The inner surface of the bottom 1f of the block body 1
It may be formed in a gutter shape extending in the front-rear direction, so that surplus water in the soil filling space 3 can be smoothly discharged to the ground D through the communication passage 5.

FIG. 12 shows a slope protection block A according to a second embodiment. The basic structure is the same as that of the slope protection block A according to the first embodiment. The ceiling surface and the bottom surface are formed in a substantially horizontal plane, and the bottom 1f
Are different in that drain holes 20, 21 for draining water to the drainage temporary storage space 4 side of the lower slope protection block A are formed. 1p is a fitting projection, and 1q is a fitting recess.

The slope protection block A can be stacked substantially horizontally and stepwise to form a retaining wall. The drainage in the soil filling space 3 and the drainage in the communication passage 5 are Lower slope protection block A through drain holes 20 and 21, respectively
Can be discharged into the temporary drainage storage space 4.

Further, the inner surface of the bottom 1f is formed as an inclined surface having a downward slope toward the ground D, and drains the soil filling space 3 to the drain holes 20 and 21 and further to the ground D. So that it can flow down smoothly.

FIGS. 13 to 15 show modifications of the front-rear partition wall 2, which will be described below in order.

In the front-rear partition wall 2 shown in FIG. 13, a concave portion 2d extending in the left-right direction is formed at the upper edge of the lower partition wall forming body 2b.
To form a space communication passage 9 between the recess 2d and the lower end surface of the upper partition wall forming body 2a.

In the front-rear partition wall 2 shown in FIG. 14, three semicircular concave portions 2 are formed at the upper edge of the lower partition wall forming body 2b.
e, 2e, 2e are formed at regular intervals in the left-right direction, and three spatial communication passages 9, 9, 9, between each recess 2e, 2e, 2e and the lower end surface of the upper partition wall forming body 2a. 9 are formed.

The front-rear partition wall 2 shown in FIG. 15 is formed of a single plate, and has three space communication paths 9, 9, 9 formed at the center thereof with a space therebetween in the left-right direction.

Here, the front-rear partition wall 2 can be formed as a single plate or can be formed by dividing it into two or more pieces in the vertical direction. The shape and number of the space communication passages 9 can be appropriately set as needed.

[0104]

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

(1) According to the first aspect of 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 on the rear wall of the block main body. Due to the formation of a communication passage communicating with the mountain, the soil and the ground filled in the soil filling space are in a continuous state through the communication passage, and the plants vegetated on the filling soil in the soil filling space are: Also, water and nutrients can be supplied from the ground.

Therefore, the vegetated plant can be grown in a natural state, and labor and cost for protection and management of the plant can be eliminated.

In the soil filling space, a left-right partition wall is provided, and the left-right partition wall is disposed in a direction substantially perpendicular to the extension direction of the slope of the ground. When a river protection wall is constructed with a slope protection block, the soil filling space is separated and arranged in a direction substantially perpendicular to the flow direction of the river by a left-right partition wall in the event of a flood, etc. When the river rises,
The amount of soil that has been filled into the soil filling space is scoured by the running water of the river, which can be suppressed by the left and right partition walls. In addition, the function of protecting and managing living things can be satisfactorily secured.

(2) According to the second aspect of the present invention, since the left and right partition walls can be inserted into and removed from the block main body from the upper opening side, the left and right partition walls can be provided as required. It can be easily attached and detached, and the attachment / detachment work can be easily performed by inserting and removing in the vertical direction.

(3) According to the third 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. At the other end, a drainage outlet that opens to the outside of the block body is formed, so that groundwater from the ground can be drained from the drainage inflow hole → drainage channel → drainage outflow hole → outside the block body.
In addition to reducing the earth pressure (water pressure) acting on the slope protection block, it is possible to prevent problems such as landslides from occurring.

(4) According to the fourth aspect of the present invention, the drain passage is formed in the block main body, and the temporary drain space is formed in the middle of the drain passage. The groundwater that has flowed in is temporarily retained in the temporary drainage retention space, and the inflow velocity of the groundwater can be reduced. Can be prevented from being sucked out.

(5) According to the fifth aspect of the present invention, the drain outlet formed at the other end of the drain passage is positioned above the drain inlet connected to one end of the drain passage. Therefore, it is possible to further enhance the effect of (3) deceleration of flowing water and the effect of preventing soil from being sucked out.

(6) According to the sixth aspect of the present invention, since the drainage outlet is formed at the upper end portion of the side wall forming the side of the temporary drainage retention space, the drainage drainage outlet is provided. And can be discharged to the outside of the block body.

(7) According to the seventh aspect of the present invention, since the drain outlet is disposed at a position lower than the upper surface of the soil filled in the soil filling space, the drain discharged from the drain outlet is provided. Can be prevented from flowing directly to the filling soil side in the soil filling space, and the rainwater poured down to the filling soil flows into the drainage temporary holding space side, and from the drainage temporary holding space It can be drained to the ground through the drainage outlet.

(8) According to the eighth aspect of the present invention, since the soil filling space and the drainage temporary 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.

(9) According to the ninth aspect of the present invention, since the front and rear partition walls can be inserted into and removable from the upper opening side of the block main body, the block main body can be easily formed. be able to.

By forming a gap between the lower end face of the longitudinal partition wall and the upper end face of the bottom of the block body, the air filled into the soil filling space from the temporary drainage space through the gap is filled with air. And to prevent the filling soil from flowing into the temporary drainage retention space from the soil filling space, and to ensure that drainage is carried out efficiently and to allow insects to move in and out. it can.

(10) According to the tenth aspect of the present invention, since the partition wall has a spatial communication path communicating the soil filling space and the temporary drainage space, organisms pass through the spatial communication path. Therefore, it is possible to freely move between the soil filling space and the temporary drainage space, and provide a comfortable living space for living things.

Accordingly, 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 to provide nutrients to the soil filled in the soil filling space.

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 filled soil and the ground fill. Can be activated.

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

(11) According to the eleventh aspect of the present invention, since the front-rear partition wall is formed by connecting a plurality of partition wall forming members in the vertical direction, the weight of the partition wall forming member as a single unit is formed. The work of forming the front and rear partition walls formed by inserting into the block main body can be easily performed by hand, and a gap is formed between the contact surfaces of the partition wall forming bodies located above and below. Thus, the gap can be used as a space communication passage.

(12) According to the twelfth aspect of the present invention, since the wastewater temporary holding space is filled with a lump such as chestnut stone or gravel, the effects of the above (4) and (5) can be further improved. As well as being able to be raised further, it is formed between lumps, and
The void communicating with the atmosphere is used as a habitat for living things.

[0124] 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 filled with the lumps and communicates with the atmosphere, is continuous with the ground through the drainage inflow hole, functions as a flow path for water and nutrients, and the microorganisms such as bacteria are removed. 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.

[Brief description of the drawings]

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

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

FIG. 3 is an explanatory side sectional view of a part of the revetment retaining wall.

FIG. 4 is a plan view of a part of the revetment retaining wall.

FIG. 5 is a side view of a slope protection block.

FIG. 6 is a sectional side view of the slope protection block.

FIG. 7 is a plan view of the slope protection block.

FIG. 8 is a front view of the slope protection block.

FIG. 9 is a rear view of the slope protection block.

FIG. 10 is a plan view of the slope protection block in a state where a front-rear partition wall and a left-right partition wall are removed.

FIG. 11 is an explanatory diagram of suppressing the amount of scouring of a revetment retaining wall.

FIG. 12 is a cross-sectional side view of a part of a seawall retaining wall constructed using a slope protection block as a second embodiment.

FIG. 13 is a front view as a first modification of the front-rear partitioning wall.

FIG. 14 is a front view as a second modification of the front-rear direction partition wall.

FIG. 15 is a front view as a third modification of the front-rear direction partition wall.

[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 (12)

[Claims] An earth filling space is formed in a box-shaped block main body having at least a partially open upper surface, and a communication passage connecting the soil filling space and the ground is formed in the block main body. While providing a left-right partition in the filling space,
The left-right direction partition wall is a block for slope protection characterized in that it is arranged in a direction substantially perpendicular to the direction of extension of the slope of the ground. 2. The slope protection block according to claim 1, wherein the left and right partition walls are detachably inserted into and attachable to the block main body from an upper opening side. 3. 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. 3. A drainage discharge hole is formed.
The described slope protection block. 4. The slope protection according to claim 1, wherein the drainage channel is formed in the block body, and a temporary drainage space is formed in the middle of the drainage channel. Block. 5. The drainage outlet formed at the other end of the drainage channel is located above the drainage inlet connected to one end of the drainage channel.
The described slope protection block. 6. 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. 7. The slope protection block according to claim 6, wherein the drainage outlet is disposed at a position lower than the upper surface of the soil filled in the soil filling space. 8. The slope protection block according to claim 4, wherein a soil filling space and a drainage temporary holding space are formed in the block main body via a longitudinal partition wall. . 9. The slope protection block according to claim 8, wherein the front-rear partitioning wall is detachably inserted into and attachable to the block main body from the upper opening side. 10. The slope protection block according to claim 8, wherein a space communication passage communicating the soil filling space and the temporary drainage space is formed in the front-rear direction partition wall. 11. The slope protection block according to claim 9, wherein the front-rear partition wall is formed by connecting a plurality of partition wall forming bodies in a vertical direction. 12. The slope protection block according to any one of claims 4 to 11, wherein the temporary wastewater retention space is filled with a lump such as rubble stone or gravel.