JP2000110183A - Plantation net utilized in hollow block and installation method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the outflow of sediment by charging a predetermined shape plantation net into an opening-provided hollow block utilized in retaining walls. SOLUTION: Lower two-tier hollow blocks 1, 1 lie under water 90, the lateral surfaces 20 of which are filled with coarse rocks 85 so as to make a fish-living zone by the use of stone interstices. Used to a hollow block 2 above the water level is a bottomed block, and the lateral surface 20 is continued to the uppermost tier hollow block 1. Each opening 14 of these hollow blocks 1, 2 is covered with a plantation net 5 extending to the bottom of the block in order to prevent outflow of culture soil 81 charged therein as sediment. Since the plantation net 5 is composed of material having water retentivity, water absorptiveness and so on suitable for plantation, moisture required for growing russery stocks can be supplied to the culture soil 81. Accordingly, even a sediment of small- sized particles in the follow block never flows out, so that trees can be cultivated; thus pushing on with a tree-planting of the retaining walls.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting net and a planting net for preventing the outflow of planting or purification earth and sand filled in a hollow block having an opening used for a retaining wall. It is related to the method of installation.

[0002]

2. Description of the Related Art In order to withstand earth pressure, large retaining stones or concretes are filled in a hollow block to increase the self-weight of the retaining wall. With water-retentive and non-water-absorbing materials, trees cannot be vegetated in the hollow block and the retaining wall cannot be greened.

For this reason, there is an attempt to form a retaining wall by stacking hollow blocks having openings, and to fill the hollow block with earth and sand for planting. However, heavy rain caused fine earth and sand to flow out. I do. In some cases, the hollow block is filled with earth and sand for planting and purification as a retaining wall for revetment of a waterway or the like, but the earth and sand is washed away by water currents and waves.

[0004]

SUMMARY OF THE INVENTION The present invention prevents the earth and sand filled in the hollow block from flowing out due to heavy rain, water flow, waves, etc., on the retaining wall assembled with such hollow blocks. To provide a planting net and a method for setting the planting net.

[0005]

To achieve the above object, a planting net according to the present invention is used for planting or purifying a hollow block having an opening used for a retaining wall. It shall be formed in the predetermined shape which prevents outflow of earth and sand.

[0006] The above-mentioned planting net has a branch yarn composed of fibers suitable for planting or fibers suitable for planting partially or wholly made of fibers suitable for planting, or weaving a branch yarn between trunk yarns. thing,
Alternatively, the nonwoven fabric is formed of fibers suitable for planting or yarns suitable for planting. Further, each of the above-described planting nets is buried in earth and sand.

The method of installing a planting net according to the present invention is formed in a predetermined shape in order to prevent the outflow of planting or purification earth and sand filled in a hollow block used for a retaining wall. A planting net is installed in the hollow block, and the inside is filled with earth and sand.

[0008] In the above-described method of installing a planting net, the planting net is installed over an adjacent hollow block, or in the above-described method of installing each planting net, a plurality of sets of planting nets are placed in the hollow block. Install at a predetermined distance.

[0009] In the above-mentioned method of setting each planting net,
A part or all of the planting net is made to fix the branch yarn consisting of the fiber suitable for planting or the fiber suitable for planting to the fiber or the stem yarn, or weave the branch yarn to the stem yarn or weave it. It shall be a non-woven fabric formed of suitable fibers or yarns suitable for planting, or a planting net shall be buried in earth and sand.

[0010] Further, in the method of setting a planting net,
The planting net is formed into a predetermined shape to prevent the outflow of earth and sand for planting or purification, and the planting net is partially or entirely suitable for planting on fibers or trunk yarns suitable for planting It is a nonwoven fabric formed by fixing branch yarns made of fibers, or weaving branch yarns to trunk yarns, or a nonwoven fabric formed of fibers suitable for planting or yarns suitable for planting. In the hollow block provided with, a long planting net is installed downward from the upper end of the retaining wall, and then the earth and sand are injected from the upper end of the hollow block, and the planting net is buried with the earth and sand. .

[0011]

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

FIG. 1 is a perspective view showing an example of a hollow block having an opening and a planting net for preventing outflow of earth and sand filled in the hollow. The hollow block 1 is the front wall 1
1, a rear wall 12 and two side walls 13 connecting the walls 11 and 12 are integrally formed of precast concrete so that a hollow portion 10 and side spaces 20 are formed on both sides. . The front wall 11 has an opening 14 and a side wall 13.
Has an opening 15 and the rear wall 12 has a through hole or opening 16. The hollow blocks 1 are aligned vertically by tenons 17 and tenon holes 18 provided above and below the side wall 13 and are stacked one on top of the other. Is formed.

The planting net 5 is a long polypropylene net formed in a U-shape, and has an opening 1 of a continuous hollow portion 10 extending from the top end of the piled retaining wall to the bottom.
After being hung down and installed so as to cover 4 and 15, the inside of the hollow block is filled with earth and sand from the upper end. Another planting net 6 is made of a punched metal having a height equivalent to the height of one hollow block combined in a box shape. , 1 are inserted into their side spaces 20.

The planting net is a net, a woven fabric, a nonwoven fabric, a perforated metal, or the like, and is made of iron, non-ferrous metal, porous concrete, resin, cotton, wool, hemp, rubber, or an organic or inorganic material. However, fibers suitable for planting, that is, materials excellent in water absorption, water retention and the like are preferable. The shape of the planting net includes various shapes such as a U-shape and a box as well as a one-sided shape, a two-sided shape, a cylindrical shape, a bag-like shape, an irregular shape, and the like, There are ones integrally combined, molded ones and the like. Also, the size is appropriately selected depending on the place of use, such as a long one to a short one, and a wide one to a long one. The mesh and rigidity of the planting net are appropriately selected and used depending on the position where the planting net is used, the usage method such as a long or box shape, and the size of the earth and sand to be filled.

The earth and sand 8 includes river gravel, sand, loam, humus,
Including culture soil, crushed stone, resin, ceramics, etc.
Also included are cellular concrete, permeable concrete, permeable ceramics, permeable resin molded products, permeable iron and non-ferrous metal molded products, and permeable rubber molded products.

The openings 14 provided in the hollow block 1
The position, shape, number, and the like of the fifteen are appropriately selected depending on the conditions of use of the retaining wall. The size and number of the through holes 16 provided in the rear wall 12 are appropriately determined depending on the type of backfill material, the amount of permeated water, and the like.

FIG. 2 is a cross-sectional view of the retaining wall on which the hollow blocks are stacked, which is cut in the horizontal direction. The hollow blocks 1 are arranged side by side so as to be in contact with each other, and the space formed by the hollow portion 10 of the hollow block 1 and the side space 20 of the two hollow blocks 1 adjacent to each other is filled with vegetation net 6 as earth and sand 8. , Soil 83, concrete 83 reinforced with a reinforcing bar 84, rough rock 85, concrete 83, slightly rough rock 86, and the like. A backfill stone 87 is packed in a gap between the hollow block 1 and the ground 88 on the back side of the rear wall 12.

FIG. 3 is a sectional view taken along line AA of FIG. In this example, the retaining wall is formed by being assembled with four blocks. The lower two hollow blocks 1, 1 are below the water surface 90,
The side space 20 is filled with rough rocks 85, and the gaps between the stones serve as fish nests. As the hollow block 2 on the water surface, a block with a bottom is used, and a side space portion 20 is continuous with the uppermost hollow block 1, and the openings 14 of the hollow blocks 1 and 2 are inside the block. The bottom is covered with a vegetation net 5 extending to the bottom to prevent outflow of the culture soil 81 filled therein as earth and sand. Since the planting net 5 is made of a material having water retention and water absorption suitable for planting, it is possible to supply the culture soil 81 with water necessary for growing the seedlings. After cutting a part of the planting net 5, the seedlings are planted in the culture soil 81 through a gap such as a net or the like, and the trunk is covered again with the planting net 5 to prevent the culture soil 81 from flowing out. .

FIG. 4 is a sectional view taken along line BB of FIG. Each hollow portion 10 vertically connecting the four hollow blocks 1 is filled with concrete 83, and the concrete 8 is filled with concrete 83.
3 is reinforced with reinforcing steel 84 fixed to the base concrete 89a, leveling concrete, and crushed stone 89b.
The retaining wall is strong and stable. The lower two hollow blocks have no openings 14 and 15, and the upper two hollow blocks have openings 14 and 15, so that the planting net 5 is used to prevent the concrete 83 from flowing out. You are using

FIG. 5 is a perspective view of another planting net 6, and FIG.
Is a plan view after the planting net 6 is filled with earth and sand. This planting net 6 is composed of multiple box-shaped planting nets 61 and 6.
2 and 63, and are integrated by a bottom plate 64. The soil 8 is planted in the planting net 6 by the bucket 65.
Is filled from the top. Each planting net 61, 62, 63
The material and size of the mesh are determined by the diameter of the earth and sand 8 to be filled therein. Generally outside planting net 6
Since a large-diameter earth and sand 91 is filled between 1 and 62, a large mesh with high rigidity and a large mesh is used, and inside the planting net 63 is filled with earth and sand 93 suitable for planting. As the planting net 63, a nonwoven fabric made of a thread having low rigidity, a fine mesh, and excellent in water absorption and water retention and suitable for planting is used. Between the intermediate planting nets 62 and 63, the type of the soil 92 is selected according to the type of the seedlings to be planted in the planting net 63. In the case of the seedlings whose roots greatly extend, the planting soil is also applied to this portion. Fill to increase the volume of planting soil.

As described above, the material of the planting net 6, the size and rigidity of the mesh, the kind and the diameter of the earth and sand 8 to be filled, and the like are determined by the weather conditions, the height of the retaining wall, the gradient of the retaining wall, It can be freely selected in consideration of the usage of the retaining wall, the location of the retaining wall, the water level, the back soil of the retaining wall, the size of the opening of the hollow block, the type of tree to be planted, and the like. In each of the planting nets 61, 62, and 63, it is not necessary to make the size of the mesh of the four surfaces the same, and a part of the mesh may be a plate having no air permeability, and a portion of the four surfaces is missing. It may be U-shaped or L-shaped. Also, gravel may be put into the inside planting net 63 so as to form a rainwater passage that penetrates the upper and lower sides of the retaining wall to supply water to the cultivated soil between the planting nets 62 and 63. Similarly, in the earth and sand in the hollow block, a long water-absorbing, water-retaining planting net is buried across one hollow block or a plurality of hollow blocks downward from the top end of the retaining wall, The moisture of the cultivation soil may be maintained at a constant level.

FIG. 7 is a perspective view showing another planting net 7, and FIG. 8 is a sectional view taken along line CC of FIG. The permeable layer 94 as the outer layer of earth and sand is made of porous concrete, ceramics, resin, iron, non-ferrous metal, woven fabric, non-woven fabric, or the like. This is to prevent the outflow of the earth and sand 95 inside, to prevent the roots of the tree from growing, or to allow water to permeate and air to enter. If necessary, in addition to the permeable layer 94, the same or different porous material can be doubled or tripled on the inside thereof with or without a planting net. In this manner, the outermost planting net 71, the intermediate planting net 72, or the partition planting net and the reinforcing plate 73 can be omitted.

The infiltration layer 94 may be only the outer side X of the retaining wall, or may be a combination of the outer side X and the back side Y, or a combination of the left and right sides. Is determined by

FIG. 9 is a perspective view of another planting net 51, and FIG. 10 is a plan view showing a state where the planting net 51 is filled with earth and sand 8. This is a planting net in which a number of vertical rails 53 are attached in a cage shape between a horizontal frame 52 and a bottom plate 57 combined in a square shape. The interval between the vertical bars 53 is a gap where the earth and sand filling the inside does not flow away. In the internal partition net 54, the vertical rail 56 is fixed to one or both of the upper and lower horizontal frames 55. Similarly, the vertical beam 53 is also
Alternatively, it is fixed to one or both of the bottom plates 57. Such a planting net 51 is appropriately selected from the planting nets 6 and 7 shown in FIGS. 5 and 7 and installed in the hollow block. Alternatively, the planting net 51 may be reversed. That is, a plurality of horizontal frames 52 may be arranged in a horizontal row with the four corners as vertical bars 53.

The vertical rails 53 constituting the planting net 51,
56 and the horizontal frames 52 and 55 are plate-like, cloth-like, and rod-like having an appropriate cross-sectional shape such as square or circular, and are woven fabrics of concrete, woven fabric, non-woven fabric, resin, ceramics, iron, non-ferrous metal, carbon fiber, or aramid. Made of building materials such as wood, cotton, etc.

As described above, the purpose of the planting net of the present invention used in the hollow block is to prevent the hollow block from flowing out of the earth and sand filled in the planting net due to flooding caused by precipitation or the like. The second requirement is to make soil and soil have appropriate moisture so that the planted trees do not die. However, if the particles of earth and sand are made small to retain water, they will be washed away by flooding. Conversely, if the size of the soil particles is increased, water retention cannot be obtained. For this reason, it is necessary to increase the water retention of the planting net. As described above, the planting net of the present invention is preferably water-retaining and water-absorbing.Water-retaining and non-water-absorbing soil or fine soil and fibers for adhering humus and the like are also used for planting nets and the like. It is included in fibers suitable for planting. For example, even if the revetment is flooded and the above-mentioned fine soil or the like attached to the fibers flows out, the new soil will adhere to the fine soil and the like to maintain the water retention, thereby helping the growth of trees. For this purpose, the purpose can be achieved by weaving many hairy fibers, water-retaining fibers, or fibers to which fine earth and the like tend to adhere to the fibers. For this reason, if the fertilizer and humus, which are effective for a long period of time, are initially installed or mixed in the top of the retaining wall or in the soil filled in the planting net, the planting effect is improved.

FIG. 11 is a sectional view of a yarn 31 used for a warp or a weft constituting the net of the net-like planting net of the present invention. This thread 31 is formed on a trunk 32 with a pleat 3 of an appropriate diameter, length and number.
3, when the pleats 33 enter the earth and sand, the purpose of increasing the water retention of the earth and sand can be achieved. The material is selected from the building materials described above.

This thread 31 is connected to the planting net 51 shown in FIG.
Not only can be used for each of the vertical bars 53, 56 and the horizontal frames 52, 55, but also when the vertical bars 53, 56 and the horizontal frames 52, 55 have no water retention such as iron, ceramics, etc. It is preferable to use only the yarn 31 or the trunk 32 or the trunk 32 and the pleats 33 wound around or surrounded by the vertical bars 53, 56 and the horizontal frames 52, 55. Needless to say, this thread 31 can be used for the planting net shown in FIGS.

FIG. 12 is a sectional view showing a state in which the yarn 31 has been mixed into the earth and sand 8. The thread 31 or the trunk 32 or the pleat 33 is used alone by cutting it into the earth and sand 8 to an appropriate length. Further, instead of the yarn 31 shown in FIG. 11, a part or all of a fiber suitable for planting or a branch yarn made of a fiber suitable for planting is fixed to the trunk yarn, or a branch yarn is sandwiched between the trunk yarns. Woven fabrics can be used as well. As described above, the planting net of the present invention includes the soil 8 in which the planting net is mixed.

FIG. 13 is a perspective view (a) and a plan view (b) of another hollow block 21 used in the present invention. Since it is basically the same as the hollow block 1 shown in FIG. 1, only the differences are shown. The opening at the center of the front wall 11 and the rear wall 12 have been removed, and the opening 14 at the front is formed at the junction with the adjacent hollow block. Then, earth and sand from the ground behind the retaining wall is introduced between the side walls 13. Also, in order to increase the stability of the retaining wall, the projections 23 of the side wall 13 are used to make the side walls 13, 1.
A plate is inserted between the three, and concrete reinforced with reinforcing steel is poured into the enclosed space. When concrete is not cast, the plate can be omitted.

FIG. 14 is a perspective view of another hollow block 24 used in the present invention. In this example, the opening 14 of the front wall 11 is two places, the rear wall 12 is narrowed only between the side walls 13, 13, and the opening of the side wall 13 is removed.

FIG. 15 is a perspective view (a) and a plan view (b) of another hollow block 25 used in the present invention. In this example, the outer shape is a box shape.

FIG. 16 is a plan view (a), a front view (b) and a side view (c) of another hollow block 26 used in the present invention. The hollow block 1 shown in FIG. 1 is divided into two parts. It has a shape. 17 is a plan view (a) and a front view (b) of another hollow block 27 used in the present invention.
And the side view (c), and the hollow block 1 shown in FIG.
The rear wall is removed from and the shape is divided into two.

Although the embodiment of the planting net used for the hollow block of the present invention and the method of installing the same have been described in detail as described above, the present invention is not limited to only these embodiments. Various design changes are possible within the scope of the technical idea of the present invention. It goes without saying that the planting net of the present invention and the method for installing the same can be combined by combining the basic components of the above embodiments. The following can be considered as examples of some of the specific ones. 1. The positions, shapes and numbers of the openings 14, 16, 15 provided in the front wall 11, the rear wall 12, and the side wall 13, and the presence or absence of the openings are not limited to the diagrams shown in FIGS. It is appropriately determined according to the situation at the site. 2. The applicable range of the planting net and the installation method of the present invention is not limited to the diagrams shown in FIGS. 1, 13 to 17, and is also applicable to known hollow blocks and planting hollow blocks. For example, JP-A-7-29 provided by the present applicant
No. 2,692, and a patent application filed on Sep. 24, 1998, in which the bottom plate of the hollow block is partially or wholly absent, such as the one described in the invention of “Hollow block body for concealing openings and method of masonrying the block body”. 3. The shape of the front front wall of the hollow block is a cross shape, the top and bottom are curved, the left and right are curved,
Examples include a spherical shape, an L-shape for an outgoing corner and an ingoing corner, and the like. 4. 13 to 17 of the present invention and 2.3. Also, as described with reference to FIGS. 1 to 4, the planting net has a plate-like shape, a U-shape, and a mouth-like shape which are vertically connected to one or more hollow blocks, and are filled. Concrete 83
Any of the hollow portions, 10 and 20, or both may be filled as appropriate, and may be omitted if it does not hinder the stability of the retaining wall. 5. The earth and sand 8 (81, 82, 85, 86), 91 to 95 are also horizontal or vertical only soil or concrete 83
And are installed in combination as appropriate.

[0035]

Since the present invention is configured as described above, the following effects are exhibited. By planting net
Since even small-sized earth and sand in the hollow block does not flow out, trees can be grown and greening of the retaining wall can be promoted.

In order to stabilize the retaining wall, even when the hollow block is filled with earth and sand having a large particle diameter, the planting net retains water retention and water absorption suitable for planting, so that the tree can be maintained. Can grow.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a hollow block and a planting net of the present invention.

FIG. 2 is a horizontal sectional view of a retaining wall on which the hollow blocks of FIG. 1 are stacked.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a perspective view showing an example of a planting net of the present invention.

6 is a plan view after filling the planting net of FIG. 5 with earth and sand.

FIG. 7 is a perspective view showing a state where another planting net of the present invention is filled with earth and sand.

FIG. 8 is a sectional view taken along the line CC of FIG. 7;

FIG. 9 is a perspective view of another planting net of the present invention.

FIG. 10 is a plan view showing a state where earth and sand are filled in the planting net of FIG. 9;

FIG. 11 is a cross-sectional view of a thread used for the net-like planting net of the present invention.

FIG. 12 is a cross-sectional view showing a state in which the yarn of FIG. 11 is mixed in earth and sand.

FIG. 13 is a perspective view and a plan view of another hollow block used in the present invention.

FIG. 14 is a perspective view of another hollow block used in the present invention.

FIG. 15 is a perspective view and a plan view of another hollow block used in the present invention.

FIG. 16 is a plan view, a front view, and a side view of another hollow block used in the present invention.

FIG. 17 is a plan view, a front view, and a side view of another hollow block used in the present invention.

[Description of Signs] 1,2,21,24,25,26,27 Hollow Blocks 5,6,7,31,51,53,54,56,61,6
2,63,71,72,73 Planting net 8,91,92,93,94,95 Sediment 14,15,16 Opening

Claims (11)

[Claims] 1. A planting net formed in a predetermined shape to prevent the outflow of planting or purification earth and sand filled in a hollow block having an opening used for a retaining wall. 2. A planting net, in which a part or all of a fiber suitable for planting or a branch yarn made of a fiber suitable for planting is fixed to a trunk yarn, or the branch yarn is sandwiched between trunk yarns and woven. The planting net according to claim 1, wherein the planting net is formed. 3. The planting net according to claim 1, wherein the planting net is a nonwoven fabric formed of fibers suitable for planting or yarns suitable for planting. 4. The planting net according to claim 2, wherein the planting net is buried in earth and sand. 5. A planting net formed in a predetermined shape in the hollow block for preventing the outflow of planting or purification earth and sand filled in the hollow block used for the retaining wall. A method for installing a planting net, wherein the planting net is installed and filled with earth and sand. 6. The method for installing a planting net according to claim 5, wherein the planting net is installed over an adjacent hollow block. 7. The method according to claim 5, wherein a plurality of sets of planting nets are placed at a predetermined distance in the hollow block. 8. The planting net according to claim 2, wherein the planting net is the planting net according to claim 2.
How to install the planting net described in the section. 9. The planting net according to claim 3, wherein the planting net is the planting net according to claim 3.
How to install the planting net described in the section. 10. The planting net according to claim 5, wherein the planting net is the planting net according to claim 3, which is buried in earth and sand. Method. 11. The planting net according to claim 1, wherein the planting net is a planting net with a long planting net from an upper end of a retaining wall in a hollow block having a stacked opening. A method for installing a planting net, wherein the planting net is installed downward, and thereafter, earth and sand is charged from the upper end of the hollow block, and the planting net is buried with earth and sand.