JPH0646026U - Revetment slope greening block - Google Patents

Abstract

(57) [Summary] [Purpose] The conventional vegetation sheet for greening concrete revetments has a problem that it is washed away and washed away when the river rises. In addition, recently, components flowing out of concrete into river water may adversely affect the environment. The present invention is to realize the greening of the revetment slope in a state close to the natural environment without deteriorating the strength of the revetment. [Structure] A net-shaped basket is provided, and natural stones and moisturizer are placed in a bag made of water-permeable fabric in the upper basket part, while moisturizer is put in the bag made of water-permeable fabric in the lower part. , Place plant seeds in the upper part. The natural stone of the lower basket stabilizes the block and achieves the purpose of revetment, while the moisturizing material and seeds of the upper stage can green the revetment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a greening block arranged on a bank of a river bank.

[0002]

[Prior art]

 Since revetment works for rivers are performed by arranging slope blocks, which are secondary concrete products, it is extremely difficult to vegetate grass and other plants on revetment slopes.

Conventionally, as a technique for greening a concrete revetment surface, there is known a method in which a sheet on which plant seeds have been planted in advance is placed on the revetment slope (Japanese Patent Laid-Open No. 04-121113). This is because a degradable porous moisturizing layer made of natural material such as water moss is provided on the lower side of the degradable film with many holes (or slits), and a grass runner is placed under it to decompose on the lower surface. A flexible plastic sheet is provided to make a long sheet, and this long sheet is placed on a concrete revetment slope. After arranging the sheets, shoots grow from the grass runners, penetrate the moisturizing layer, and the grass grows.

[0004]

[Problems to be solved by the device]

 By the way, such a vegetation sheet is attached to the concrete slope by an appropriate means, but when the river is flooded, the vegetation sheet is swept away by the running water that enters the underside of the sheet and easily peels off, causing the sheet to be washed away. is there. Since the roots of turf do not enter the concrete surface, all turf is lost when the sheet is washed away.

Further, recently, a component for flowing out of concrete into river water may adversely affect the environment, and thus a technique for water quality conservation is being demanded.

Therefore, an object of the present invention is to realize greening of the revetment slope in a state as close to the natural environment as possible without impairing the conventional revetment strength.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object and achieve the object, the revetment slope greening block according to the present invention is provided with a net-like basket, and the natural stone and the moisturizing material are stored in a bag body made of a water-permeable fabric. On the other hand, the moisturizing material was stored in a bag using a water-permeable fabric and placed in the upper layer portion of the basket while plant seeds were placed in the upper layer portion of the basket.

[0008]

[Action]

 In the revetment slope greening block according to the present invention, the net-like basket is divided into upper and lower tiers, and natural stones are placed in the lower tier basket portion to maintain the stability of the entire block. This natural stone is placed in a water-permeable bag, and soil and other moisturizers are packed between the stones, so that water can be supplied to the plant seeds placed in the upper basket.

On the other hand, in the upper part of the basket, a water-permeable bag is filled with a water-retaining material, and plant seeds are mixed or sprayed on the moisture-retaining material. The upper bag is filled with a moisturizing material and then the opening is closed to prevent the moisturizing material from flowing out when the water level increases. Since the bag is water permeable, it can allow rain to soak in and store moisture in the lower moisturizer.

The natural stone used for this greening block does not exude the impure component that deteriorates the water quality unlike concrete. The moisturizing material used in the present invention is mainly soil, but other natural materials such as granular sand, or natural or chemical fibers may be used alone or in combination with other materials depending on the installation environment.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an example of a greening block according to the present invention. This greening block 10 defines the appearance by net-like baskets 11 and 12 that are stacked in two layers, the lower basket 12 containing natural stones 15 and filling soil 16 in a bag body 14, and the upper basket. In No. 11, the filling soil 18 and the turf seed 19 are enclosed in the bag body 17. Reference numeral 20 is an intermediate net lid for partitioning the upper and lower baskets 11, 12, 21 is a net lid for the upper basket 11, 22 is a bottom net, 23 is a grown grass leaf, and 24 is a grass root.

The baskets 11 and 12 that define the entire block are composed of metal wires or resin wires. In the case of metal wire, it is possible to use a rust-resistant metal such as stainless steel, but when using a material that easily rusts such as iron, the surface is coated with resin to prevent damage due to rusting. It is desirable to do. The resin material is lightweight and facilitates the placement work, but considering the possibility of outflow when the water level rises, it is preferable to give it some weight. However, if a means such as fixing the lower basket 12 to the gland is taken, the weight of the basket itself does not matter, and therefore lightweight resin such as acrylic or poly-based may be used. A reinforced resin such as FRP may be used to maintain rigidity. The material of these baskets is selected as appropriate depending on the flow rate of the location and the cost.

Since the lower bag body 14 for storing natural stones and the upper bag body 17 for storing padding each require water permeability, for example, hemp, cotton, other natural fibers or a fabric material woven with a mixed fiber. To use. Since it is not necessary for the fabric to decompose after plant growth, it is desirable to use as durable a fabric as possible. However, when the seeds 19 grow, there is a mesh gap that allows the shoots to penetrate the fabric fibers, or the thickness of the fabric that allows the shoots of the plants to penetrate. The natural stones 15 arranged in the lower basket 12 preferably have a warp larger than the mesh of the basket 12.

Next, a procedure for arranging the greening block 10 will be described. FIG. 2 shows an example of the work procedure. First, a basket 11 (12) that is vertically integrated is disposed on the bank slope, and as shown in (a), a bag body is placed inside the basket 11 (12). 14 is put, and the natural stone 15 and the filling soil 16 are put in the bag body 14. Next, the upper opening of the bag body 14 is closed, the intermediate net lid 20 is covered from above, and an appropriate place is fixed to the side surface P of the basket 11 as shown in (b). The number of fixed points P does not matter.

After that, as shown in (c), the bag 17 is placed in the upper basket 11 with the intermediate net lid 20 as the bottom surface, the padding soil 18 is put in the bag 17, and the grass is placed at the upper position. The seeds 19 are scattered and mixed. Then, as shown in (d), the upper opening of the bag body 17 is closed, and the net lid 21 is put on it to fix the appropriate portion Q to the upper basket 11.

This completes the arrangement of one greening block 10. However, since a plurality of blocks can be connected, the same blocks 10 are lined up as shown in FIG. 8E, and the points are appropriately set (for example, S). They may be fixedly connected to each other. The fixed connection method may be screwing, wire binding, welding, fitting fixing, or other means. Incidentally, reference numeral 26 in FIG. 6 (e) is a slope ground.

Therefore, by arranging the greening blocks 10 on the revetment slope, it is possible to improve the aesthetics of the river basin by allowing the seeds 19 contained in the bag body 17 to vegetate grass on the entire revetment.

Since most of the constituent materials of the block 10 are the natural stone 15 and the filling soils 16 and 18, the block 10 does not pollute the river. Further, since the filling soils 16 and 18 are closed by the bags 14 and 17, the sediment inside does not flow out even when the river is flooded. In addition, the natural stone 15 makes the entire block 10 stable under its own weight without any fixing means, and will not be washed away even if the water level increases. Even if the soil of the upper basket 11 is washed away, it is supported by the heavy natural stones 15 in the lower basket 12 and does not flow out, so that the purpose of revetment can be achieved. Of course, in rivers that repeat frequent flooding, appropriate anchoring means such as anchoring means may be added.

In the embodiment shown in FIG. 2, the upper and lower two-stage baskets 11 and 12 are continuously arranged vertically, and the partition lid 20 is arranged in the middle, but the upper and lower baskets 11 and 12 are independent. However, as long as the upper basket 11 has a bottom net, it is not necessary to dispose the intermediate net lid 20 as in the above embodiment. In this case, the upper and lower baskets 11 and 12 are stacked and fixed.

As shown in FIG. 3 (b), the bag for storing the natural stones and the soil (moisture retaining material) is not divided into upper and lower parts, and one bag 30 is used to put the natural stone and the soil in the lower stage B. You may put soil (or soil and seeds) in the upper part U. Further, as shown in FIG. 3A, the upper bag 31 may have an opening 32 at the bottom surface so that moisture such as raindrops can be smoothly supplied to the soil (humidifying material) arranged in the lower layer.

Further, since the filling soils 16 and 18 put in the bags 14 and 17 are moisturizing materials for growing seeds, they are not necessarily limited to natural soils, but beet moss, solidified soils, and porous materials such as coal. It may be a mixture of wood, cotton fiber and sand soil. At this time, the moisturizing material may be mixed with nutrients such as fertilizers that promote seed growth. The seeds placed in the upper bag 17 are not limited to turf. It may be a herbaceous natural plant that grows near the water or a woody plant that forms a row of rivers such as willow. The block 10 is usually configured to have a volume of about 1 × 1 × top / bottom 0.4 m, but the block volume (particularly the top surface area) is not limited.

The seeds may be mixed with the upper soil (moisturizing material), or may be sprayed on the surface (surface) of the bag after installation. It is also possible to spray the seeds on the bag in which the seeds are mixed. Not only one kind of seed but also a plurality of kinds can be mixed. A vertical partition plate may be provided in the block. By setting partition plates, the rigidity of the basket can be improved, and different kinds of plant seeds can be arranged to change the environmental aesthetics.

According to the greening block 10 of the present invention, the roots of even woody plants such as willows can be invaded into the slope ground, so that the growth of the plants can be stably maintained for a long period of time. .

[0024]

[Effect of device]

 As described above, according to the revetment greening block of the present invention, it is possible to form a revetment slope with durability and strength similar to that of a concrete block, and under artificial artificial revegetation plan, the revetment in a state close to nature. It becomes possible to plan greening.

[Brief description of drawings]

FIG. 1 is a partial sectional perspective view showing an example of a greening block according to the present invention.

FIG. 2 is a diagram illustrating an arrangement procedure of a greening block according to the present invention.

FIG. 3 is a view showing another embodiment of the bag body of the greening block according to the present invention.

[Explanation of symbols]

 10 Greening Block 11 Upper Basket 12 Lower Basket 14, 17, 30, 31 Bag 15 Natural Stone 16, 18 Filled Soil 19 Turf Seed 20 Intermediate Net Cover 21 Net Lid 22 Bottom Net 23 Turf Leaf 24 Turfroot

Claims (1)

[Scope of utility model registration request] 1. A net-shaped basket is provided, and natural stones and a moisturizing material are stored in a bag body made of a water-permeable fabric and placed in a lower layer portion of the basket, while a moisturizing material is used in a bag body made of a water-permeable fabric. A revetment slope greening block characterized in that it is stored and placed in the basket upper layer portion, and plant seeds are placed in the basket upper layer portion.