JPH1037160A - Revetment structure with piled-up pseudo-stone blocks of ecosystem conservation type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a revetment structure which generates a favorable environment for breeding of fishes and fixation of plants, can effectively conserve and improve the ecosystem underwater and at the shore, and creates a landscaping having good compatibility with the surrounding environment. SOLUTION: The front wall 3 of each block 1 has an uneven surface shape simulated from a natural stone, and the joint 2 of the front wall 3 is shaped as having no artificial straight patters, where relatively small through holes 7 leading to a cavities 22 are formed between blocks 1, 1 adjoining over and below and on the left and right, and openings 8 greater than the through holes 7 are provided on the bottom of the front wall 3 of the undermost block. A fish bank forming material 10 such as rubble stones is put in the cavities 22 in blocks 1 in the lower part, while a cultivating material such as earth and sand and/or seed-containing soil sacks are accommodated in cavities 22 in the blocks 1 in the over-part, and a slit groove 12 is formed leading to the back surface soil of the revetment structure depending upon the dimensional difference between the back wall 4 and front wall 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD [0001] The present invention is constructed on shores such as rivers and waterways, and provides a favorable environment for the propagation and growth of small animals such as fish and aquatic insects and plants such as aquatic plants. On revetment structures to improve and preserve the ecosystem of the sea.

[0002]

2. Description of the Related Art A conventional block embankment structure is generally constructed by stacking unit blocks having no voids and missing parts vertically, horizontally, and vertically, and blocks adjacent vertically, horizontally, and closely are mutually bonded. I have. Therefore, there were no gaps or spaces on the front wall of the revetment structure so that fry and aquatic insects could escape, and there were no recesses or grooves that could be used as a means of handling when a person who had fallen into the waterway climbed up.

Japanese Utility Model Laid-Open Publication No. Sho 54-65896 proposes a seawall structure provided with a space for fish nests in order to promote the reproduction of fish. For the construction of this revetment structure, a box-type block is used, which has openings on the front wall and left and right side walls with the upper and lower sides completely open, and this block is connected to the bottom of a waterway etc. in the left and right direction. , Stacked up and down according to the height of the shore. The hollow part of the block surrounded by the front wall and the rear wall, and the left side wall and the right side wall,
Used as a space for fish nests, fish can enter the cavity through the opening in the front wall, and can freely enter and exit the cavity of the adjacent block vertically and horizontally through the openings in the left and right side walls and the upper and lower side. Designed.

However, in this revetment structure, both the lower part of the front wall of the lowermost block and the upper surface of the foundation concrete on which it is placed are formed flat, so that fry and juvenile fish are prevented from predation by foreign enemies such as adults. There is no communication passage that can escape, and no clearance is provided in the cavity of the block so that fry can escape. Therefore, when an external enemy enters through the opening in the front wall, there is no way to escape the young fish and the young fish, the consumption rate of the young fish and the young fish by predation becomes high, and it is impossible to increase the reproduction of fish in practical use.

[0005] Although aquatic plants and algae provide a space for fry and larvae to escape, they also provide an environment suitable for the growth of small animals such as fish and aquatic insects by releasing oxygen accompanying respiratory action. At the beginning, there is no soil layer necessary for vegetation such as aquatic plants to settle and grow on the upper surface of the foundation concrete. Therefore, there is no outside where the earth and sand mixed in the water flow enter from the opening of the front wall, and it takes a long time to form the vegetation soil layer, during which the cavity of the block is good It will not be used as a fish nest.

[0006]

Accordingly, an object of the present invention is to provide an environment suitable for the propagation and growth of small animals such as fish and aquatic insects and small animals such as small animals, and for the establishment and growth of plants such as aquatic plants. The purpose of the present invention is to provide a quay-stone-block embankment structure that is effective for improving the preservation of ecosystems on coasts and shores, and that can create a landscape that is compatible with the surrounding environment.

[0007]

Means for Solving the Problems Hereinafter, with reference to the reference numerals in the attached drawings, in the block seawall structure of claim 1 of the present invention, the block 1 is composed of a front wall 3 and a front wall 3. Left and right side wall portions 5, 25 and upper and lower wall portions 6, 26 connected to the back side, and are slightly smaller than the surface area of front wall portion 3 connected to the left and right side wall portions 5, 25 and upper and lower wall portions 6, 26. The front wall 3 has an uneven shape simulating natural stone. When the blocks 1 are assembled vertically and horizontally according to the height and length of the waterway or quay, the seam 2 at the periphery of the front wall 3 is formed in a shape excluding an artificial straight line pattern, and is adjacent to the top, bottom, left and right A relatively small through-hole 7 reaching the hollow portion 22 is formed between the blocks 1 and 1, and an opening 8 larger than the through-hole 7 is formed at the lower end of the front wall portion 3, so that fry, young fish,
Aquatic insects and small animals can enter and exit the cavity 22. The cavity 22 communicates between the upper, lower, left and right blocks 1 and 1 by the communication ports 9 and 29 provided in the left and right side walls 5 and 25 and the upper and lower walls 6 and 26.
The fish nest-forming material 10 such as chestnut stone or miscellaneous stone is put into the cavity 22 of the block 1, and the cavity 22 of the block 1 in the upper area above the step where the retaining panel 21 is inserted is planted with earth and sand. Medium material 11 or a soil bag containing seeds is accommodated, and the rear wall 4
Due to the difference in area with the front wall 3
8 are formed.

In the revetment structure according to the second aspect, in addition to the above structure, a planting pocket 13 opened upward is provided on the front side of the front wall portion 3 of the block 1, and the inside of the planting pocket 13 is provided. The space and the cavity 22 of the block 1 are connected by a through hole 23, and the planting medium 1 is placed in the planting pocket 13.
1 and a clay bag containing seeds are stored.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, block 1
The front wall 3, the left side wall 5, the right side wall 25, the upper wall 6, the lower wall 26, and the rear wall 4 are integrally formed. Is done. Several blocks 1 from the base 23 are used as a fish nest block, and the hollow portion 22 is filled with a fish nest forming material 10 such as gravel or crushed stone. A large number of clearance gaps are formed between the fish nest forming materials 10 such that fry, juvenile or small adult fish can enter. A portion above the fish nest area is used as a planting block, and the hollow portion 22 is filled with a planting medium 11 such as earth and sand or a soil bag containing seeds. A retaining panel 21 is inserted at the boundary between the fish nest area and the planting area. The soil retaining panel 21 prevents the planting medium 11 and the like filled in the cavity 22 of the fish nest area from disappearing, and the planting medium 11 that has fallen into the fish nest area. The escape gap is prevented from being clogged.

A two-step ladder-like projection 3a is provided on the right upper half of the front wall 3 of the block 1, and the stepwise projection 3a is provided on the right upper half of the front wall 3 in the opposite direction. A three-level ladder-like projection 3b is provided, and a lower trapezoidal projection 3c is provided in the lower left half of the front wall 3. Further, a two-stage ladder-shaped concave portion 3d is provided in the upper left half of the front wall portion 3, and a two-stage ladder-shaped concave portion 3e is provided in the lower right half portion of the front wall portion 3. These ladder-like projections 3a, 3
As shown in FIG. 9, the through holes 7 having a horizontally-long parallelogram shape and a vertically-long parallelogram shape are formed in the blocks 1 and 2 adjacent to each other vertically and horizontally by appropriately changing the mating members where the b and 3c and the ladder-shaped concave portions 3d and 3e fit. It is formed between one. These through holes 7 have a size of about 50 mm × 25 mm. Further, between the lower end of the lowermost block 1 and the upper surface of the foundation 23, a stepped opening 8 is formed. These openings 8 are 150
The size is about mm × 50 mm.

The left side wall 5 and the right side wall 2 of the block 1
5 is provided with a bottom water outlet 24 at the lower end. The water in the cavity 22 does not stay excessively,
4 to the downstream side to prevent water decay. The block 1 is divided into a box body portion composed of left and right side wall portions 5 and 26, upper and lower surface wall portions 6 and 26, and a back wall portion 4, and a front wall member 14, and the box portion is assembled while being assembled. And front wall 3
Can be joined with bolts and nuts, anchor rivets, joining mortar, adhesives, or the like. With such a divided configuration, it is possible to reduce the labor burden of transport and installation of the block. Alternatively, only the front wall body 14 can be used alone as a lining material and can be attached to a slope such as a dike or a waterway.

A precast top end block 18,
If the left end block 19 and the right end block 20 are attached to each part after assembling the block 1, each end part is finished in a straight line, and the workability is improved.

As shown in FIG. 15, only the front wall 14 separated from the box body is used as a decorative form, and the front wall 14 is connected to the back form or the existing structure 17 by a joining material 15 such as a separator. And the revetment wall can be constructed by driving the fresh concrete 16 into the space between the back formwork or the existing structure 17 and the front wall body 14 at the site. A wall suitable for a natural scene is easily formed by the unique uneven shape of the front wall 14, and the present invention can be applied to the renovation of an existing revetment structure.

[0014]

As described above, in the revetment structure of the present invention,
The surface of the front wall 3 of the block 1 is formed in an uneven shape simulating natural stone, and the seam 2 formed on the periphery of the front wall 3 when the block 1 is assembled eliminates an artificial linear pattern. Because of this, it is possible to create an excellent landscape that can blend into the surrounding environment.

Since the relatively small through holes 7 formed between the blocks 1 and 1 are communicated with the hollow portion 22 inside the block by stacking the blocks 1 up and down and right and left, fry, juveniles, small adult fish, etc. Can enter and exit the cavity 22 through the through hole 7. Since the cavities 22 of the upper, lower, left, and right adjacent blocks communicate with each other through the communication port 9 of the left and right side wall sections 5, 25 and the communication port 29 of the upper and lower wall sections 6, 26, they can move freely. A large fish nest space is secured. Also, the cavity 22 of the block 1
The gap between the mutual phases of the fish nest-forming material 10 such as the chestnut stone provided in the opening provides an optimal place for fry and the like to escape, and the opening 8 formed between the lowermost block 1 and the foundation 23.
When the fry or the like is chased by an external enemy in the hollow portion 22, it becomes an escape exit for escaping from the hollow portion 22. Further, algae, aquatic plants, and the like are likely to settle on the accumulation of the fish nest-forming material 10, so that an environment useful for the growth and propagation of fish, aquatic insects, and small animals is provided. As a result, the revetment structure of the present invention effectively works for improving the conservation of ecosystems.

Blocks 1, 1 assembled vertically and horizontally
The through hole 7 formed therebetween functions as a means for crawling up when a person falls into a waterway or the like, and also helps in saving lives. When the cavity 22 of the block 1 is filled with a planting medium 11 such as earth and sand or a clay bag containing seeds in the upper area of the revetment structure, various plants grow and prosper and extend from the through holes. Green walls can be created, which is effective for improving the landscape.

Since the rear wall portion 4 is smaller than the front wall portion 3, when the blocks 1 are assembled, a slit groove 12 is formed around the rear wall portion 4, and the flow of the river becomes the seawall structure. Since it is possible to make contact with the back soil 28, ecosystems in the back soil and the river are not disconnected by the seawall. Further, the blocks 1 can be arranged not only in a straight line but also in a curved line due to the dimensional difference between the rear wall portion 4 and the front wall portion 3.

In the revetment structure of the present invention, the planting pocket 13 is provided on the block front wall 3, and the planting pocket 1 is provided.
3 and the hollow portion 22 of the block 1 are communicated with each other by the through-hole 23. By filling the planting pocket 13 with the planting medium 11 and the seeding bag containing seeds, various plants can deeply root. You can stretch and grow.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a block used in a seawall structure of the present invention.

FIG. 2 is a rear view of the block.

FIG. 3 is a left side view of the block.

FIG. 4 is a right side view of the block.

FIG. 5 is a plan view of the block.

FIG. 6 is a bottom view of the block.

FIG. 7 is a vertical sectional view of a revetment structure constructed with the blocks.

8 is a horizontal sectional view of the revetment structure of FIG.

FIG. 9 is a front view of a main part of the revetment structure of FIG. 7;

FIG. 10 is a rear view of the arrangement state of the blocks in FIG. 1;

FIG. 11 is a partially cutaway right side view showing another example of a block used in the seawall structure of the present invention.

FIG. 12 is a front view of a top end block of the seawall structure.

FIG. 13 is a front view of a left end block of the seawall structure.

FIG. 14 is a front view of a block for the right end of the seawall structure.

FIG. 15 is a vertical sectional view showing a case where a renovation is performed on an existing revetment structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 block 2 seam of block periphery 3 front wall of block 4 back wall of block 5 left side wall of block 6 top wall of block 7 through hole between front walls 8 opening at lower end of front wall 9 Communicating openings of left and right side walls 10 Fish nest forming material such as chestnut stone 11 Planting medium material such as gravel 12 Slit groove between back wall portions 13 Planting pocket 14 Front wall body 15 Joint material 16 Cement 17 Existing structure Object 18 Precast top end block 19 Precast left end block 20 Precast right end block 21 Soil panel 22 Cavity in block 23 Foundation 24 Bottom water outlet 25 Right side wall of block 26 Block Bottom wall 27 Planting block 28 Seawall on the backside of revetment 29 Communication port of upper and lower walls

Claims (5)

[Claims] 1. A block 1 having a cavity 22 inside a main body.
In a revetment structure constructed by stacking vertically and horizontally according to the height and length of a waterway or quay.
Are connected to the front wall 3, the left and right side walls 5, 25 and the upper and lower walls 6, 26 connected to the back side of the front wall 3, and the left and right side walls 5, 25 and the upper and lower walls 6, 26 And a rear wall portion 4 slightly smaller than the surface area of the front wall portion 3, the surface of the front wall portion 3 has an uneven shape simulating natural stone, and a peripheral seam 2 of the front wall portion 3. Is formed in a shape excluding an artificial straight line pattern, a relatively small through-hole 7 reaching the cavity 22 is formed between the blocks 1 and 1 adjacent vertically and horizontally, and the front wall 3 is At the lower end, an opening 8 larger than the through hole 7 is provided.
Fry, juveniles, aquatic insects, and small animals can enter and leave the cavity 22, and the cavity 22 is provided by communication ports 9, 29 provided in the left and right side walls 5, 25 and the upper and lower walls 6, 26. Are communicated between the upper, lower, left and right blocks 1 and 1. The fish nest-forming material 10 such as chestnut stone and miscellaneous stone is put into the cavity 22 of the block 1 in the lower area. The cavity 22 accommodates a planting medium 11 such as earth and sand or a soil bag containing seeds, and a slit groove 12 reaching the rear soil 28 of the seawall structure due to the area difference between the rear wall 4 and the front wall 3. An ecosystem-conservation type pseudo-stone block embankment formed. 2. A planting pocket 13 which is open upward is provided on the front side of the front wall portion 3 of the block 1, and the interior space of the planting pocket 13 and the cavity portion 22 of the block 1 are through-holes. The revetment structure according to claim 1, wherein the planting medium material (11) and the seed-filled soil bag are accommodated in the planting pocket (13). 3. A box body in which the block 1 includes left and right side walls 5, 26, upper and lower walls 6, 26, and a back wall 4.
3. The seawall structure according to claim 1, wherein the seawall structure is divided into a front wall body 14 and the box body part and the front wall part 3 are joined while being assembled. 4. 4. A precast top end block 1.
The revetment structure according to any one of claims 1 to 3, wherein the left end block 19 and the right end block 20 are mounted after the blocks 1 are assembled. 5. The front wall 14 separated from the box portion is used as a decorative formwork, and the front wall 14 is connected to a back formwork or an existing structure 17 by a joining material 15 such as a separator. A revetment structure that forms a revetment wall by driving ready-mixed concrete 16 into a space between a frame or existing structure 17 and front wall body 14.