JPH06220862A - Method of constructing steep banking - Google Patents

Abstract

PURPOSE:To feed fertilizer to vegetation for a long time by laying a sheet-like material formed therein with slots through which the vegetation can pass, over vegetation soil, and by spreading a moderately effective fertilizer thereover. CONSTITUTION:Geogrid members 4 are spread over a banking base 30, inward from a slope toe line 31. Then, vegetation soil 5 is built up to a predetermined height along the slope toe line 31. Further, banking 3 is built up and strengthened. Thereafter, vegetation soil 5 is built up thereon. The above- mentioned steps are successively repeated while the exposed surface of the vegetation soil 5 is covered with a base net 1 having its thick rope 11 extending crosswise, and is secured by hook pins 13. A rope-like moderately effective fertilizer 2 is attached to the net 1 at its top and middle position. Thus, a steep banking composed of bankings 3 stacked one upon another is formed. Accordingly, it is possible to feed a fertilizer to vegetation without hindrance of the growth of germinated vegetation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a steep slope embankment in which a geogrid material is laid horizontally, a vegetation sandbag is piled up at the bottom of the slope, and an embankment is placed behind the vegetation sandbag.

[0002]

[Prior Art and Problems] Conventionally, vegetation sandbags have been piled up on the surface of the embankment to green this steep slope. The sandbag is generally used as a container by roughly weaving a resinous flat yarn. Vegetative seeds and fertilizers are also added to the sandbags and they germinate. The coarsely woven flat yarn has water permeability, but the yarn itself has water repellency, so even if the surface of sandbags piled up steeply up and down gets a little rain, it flows along the surface and finishes, Rainwater rarely penetrates into the sandbags. For this reason, the soil in the sandbag becomes insufficient in moisture.

The fertilizer in the sandbag does not dissolve because it does not have water and cannot exert its effect. Even if the fertilizer can exert its effect, general fertilizer can only be expected to have a fertilizing effect for a few months. Due to the lack of water, the vegetation sandbags on the surface of the steep embankment often failed to achieve sufficient greening. The present invention aims to overcome these drawbacks.

[0004]

According to the present invention, a sheet-like material, which is made of a material having a water-retaining property and has a gap through which vegetation sufficiently passes, is laid on a vegetation sandbag.
Further, a slow-acting or slow-acting fertilizer is placed on the water-retaining sheet-like material at a predetermined interval.

[0005]

With this construction, the sheet-shaped material laid on the vegetation sandbags can absorb and retain rainwater. In addition, because it is in contact with the vegetation sandbags, it can be kept for a long time to compensate for the lack of water in the vegetation, and the sheet-like material keeps the slow-acting or slow-acting fertilizer component laid on top with rainwater,
The fertilizer shortage can be compensated for a long period of time, which can help the growth of vegetation. Since the sheet-like material has a gap through which plant organisms pass, it does not hinder the growth of the sheet-like material.

[0006]

Embodiment 1 An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 2 shows a thick linear 1 cm thick 1 made of a felt-like fiber assembly having good water absorption.
1 is a warp yarn, and a synthetic yarn 12 having a high tensile strength is a weft yarn, and is a base net 1 knitted at intervals of 5 cm in each length and width. The base net 1 has a width of 1 meter and a length of 5 meters.

FIG. 3 shows a large-grain slow-release fertilizer Wood Ace (registered trademark) 20 to be sold by Ryoka Agricultural Co., Ltd.
Is a rope-like slow-release fertilizer 2 in which each of the rope-like slow-release fertilizers 2 is wrapped around a net-like material 21 having water permeability at intervals of about 5 cm. The rope-like slow-release fertilizer 2 is provided with a hook 22 at the end and 25 cm along the way.

In the case of construction, as shown in FIG. 1, a geogrid material 4 having a very high tensile strength is spread from the slope line 31 on the embankment base 30 toward the back.
The geogrid material 4 is extended by an extra length of about 2 meters from the slope line. The vegetation sandbags 5 are piled up at a height of 30 centimeters along the slope line 31. The surface of the vegetation sandbag is 5
It is piled up at a steep gradient of about 60 degrees so as to form a minute gradient. After stacking, the embankment 3 is applied to the rear surface of the vegetation sandbag 5 up to its upper end. After the embankment 3 is sufficiently compacted, the vegetation sandbags 5 are stacked on the embankment 3 in the same manner as before, and the embankment 3 is applied to the back surface thereof.
By repeating such work, the embankment 3 of about 1 m is completed.

The surface of the vegetation sandbag 5 forming the surface of the embankment 3 is covered with a base net 1 so that a thick line 11 having water absorbability is laid in the transverse direction. The base net 1 is fixed on the vegetation sandbag 5 using hook pins 13 or the like. On this base net 1, rope-like slow-release fertilizers 2 are attached at the top and the middle in the transverse direction. For attachment, the hook 22 may be hooked on the base net 1. After installing the base net 1 in this way, an extra geogrid material 4 is wound up from the skirt line on the base net 1 with the vegetation sandbag 5 and the rope-like slow-release fertilizer. The hook is fixed to the vegetation sandbag at the upper end of the geogrid material 4 and at an appropriate place midway. When the embankment of the first layer is completed in this way, the steep slope embankment is completed by stacking the embankments with the second and third layers as in the case of the first layer. A base net is laid on the entire surface of the embankment, and rope-like slow-release fertilizer is installed at intervals.

The base net of the present invention is defined in the embodiment as long as it is made of a water-absorbing material with sufficient gaps for vegetation organisms sprouted from vegetative sandbags to grow through them. There is no such thing. From the viewpoint of improving the water absorption, it is desirable that the base net is made of a super absorbent resin or super absorbent fiber. The rope-like slow-release fertilizer may be attached to the base net in advance, or may be attached to the geogrid material that is rolled up on the vegetation sandbags.

Further, even if it is not a woven net, as shown in FIG. 4, a thick sheet 1 made of a fibrous material having water absorption property.
It is like a slit-like gap 16 like expanded metal that is formed by intermittently inserting cuts 15 of about 10 cm in length at intervals of several centimeters in 4 and extending in the direction perpendicular to the cuts. And so on. Furthermore,
The rope-shaped slow-release fertilizer is not limited to the examples, and for example, as shown in FIG. It is also possible to use something like that enclosed in a thin bag 24.

Further, it is possible to form the base net 1 using a palm string or a straw rope as a thick line having water absorbency. As shown in FIG. 6, the straw ropes 17 are arranged in parallel, and the first and second ropes are tied together with an aluminum ring 18 at intervals of 20 cm. At the midpoint of the knot, tie the second and third wires in the same way. In this way, by connecting all the straw ropes and pulling them in the direction perpendicular to the straw ropes, a net-like object having a rhombic mesh is formed.

[0013]

Since the present invention is constructed as described above, it has the following features. (1) Since the sheet material with good water absorption covers the vegetation sandbags, rainwater and the like are absorbed by the sheet material. Since the vegetation sandbag is in contact with this sheet-like material, it can slowly absorb water. (2) Since the sheet-like material is provided with a sufficient space for the vegetation to pass through, the vegetation organisms once germinated from the vegetation sandbags are not obstructed by the sheet-like material and hindered from growing. By installing fertilizer with a long-term fertilizing effect on 3 sheets, rainwater will dissolve the fertilizer, and the sheet will absorb it together with water and slowly supply it to the plant life. Fertilizer can be supplied to plant life for a long time.

[Brief description of drawings]

FIG. 1 is a side view showing a construction state of a base net and a slow-release fertilizer.

FIG. 2 is a perspective view showing an example of a base net.

FIG. 3 is a perspective view showing an example of a rope-like slow-release fertilizer.

FIG. 4 is a perspective view showing another example of the base net.

FIG. 5 is a perspective view showing another example of rope-like slow-release fertilizer.

FIG. 6 is a perspective view showing another example of the base net.

[Explanation of symbols]

 1 Base Net 11 Thick Wire 12 Synthetic Thread 13 Hook Pin 14 Thick Sheet 15 Cut 16 Gap 17 Straw Rope 18 Aluminum Ring 2 Rope-like Slow-release Fertilizer 20 Wood Ace 21 Net-like Material 22 Hook 23 Slow-release Fertilizer 24 Thin Bag 3 Fill 30 Embankment foundation 31 Hojiri line 4 Geogrid material 5 Vegetation sandbags

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[Procedure amendment]

[Submission date] June 18, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of Invention] Construction method for steep slope embankment

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a steep slope embankment in which a geogrid material is laid horizontally, a vegetation sandbag is piled up at the bottom of the slope, and an embankment is placed behind the vegetation sandbag.

[0002]

[Prior Art and Problems] Conventionally, vegetation sandbags have been piled up on the surface of the embankment to green this steep slope. The sandbag is generally used as a container by roughly weaving a resinous flat yarn. Vegetative seeds and fertilizers are also added to the sandbags and they germinate. The coarsely woven flat yarn has water permeability, but the yarn itself has water repellency, so even if the surface of sandbags piled up steeply up and down is slightly rained, it flows along the surface and finishes, Rainwater rarely penetrates into the sandbags. For this reason, the soil in the sandbag becomes insufficient in moisture.

The fertilizer in the sandbag does not dissolve because it does not have water and cannot exert its effect. Even if the fertilizer can exert its effect, general fertilizer can only be expected to have a fertilizing effect for a few months. Due to the lack of water, the vegetation sandbags on the surface of the steep embankment often failed to achieve sufficient greening. The present invention aims to overcome these drawbacks.

[0004]

According to the present invention, a sheet-like material, which is made of a material having a water-retaining property and has a gap through which vegetation sufficiently passes, is laid on a vegetation sandbag.
Further, a slow-acting or slow-acting fertilizer is placed on the water-retaining sheet-like material at a predetermined interval.

[0005]

With this construction, the sheet-shaped material laid on the vegetation sandbags can absorb and retain rainwater. In addition, because it is in contact with the vegetation sandbags, it can be kept for a long time to compensate for the lack of water in the vegetation, and the sheet-like material keeps the slow-acting or slow-acting fertilizer component laid on top with rainwater,
The fertilizer shortage can be compensated for a long period of time, which can help the growth of vegetation. Since the sheet-like material has a gap through which plant organisms pass, it does not hinder the growth of the sheet-like material.

[0006]

Embodiment 1 An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 2 shows a thick linear 1 cm thick 1 made of a felt-like fiber assembly having good water absorption.
1 is a warp yarn, and a synthetic yarn 12 having a high tensile strength is a weft yarn, and is a base net 1 knitted at intervals of 5 cm in each length and width. The base net 1 has a width of 1 meter and a length of 5 meters.

FIG. 3 shows a large-grain slow-release fertilizer Wood Ace (registered trademark) 20 to be sold by Ryoka Agricultural Co., Ltd.
Is a rope-like slow-release fertilizer 2 in which each of the rope-like slow-release fertilizers 2 is wrapped around a net-like material 21 having water permeability at intervals of about 5 cm. The rope-like slow-release fertilizer 2 is provided with a hook 22 at the end and 25 cm along the way.

In the case of construction, as shown in FIG. 1, a geogrid material 4 having a very high tensile strength is spread from the slope line 31 on the embankment base 30 toward the back.
The geogrid material 4 is extended by an extra length of about 2 meters from the slope line. The vegetation sandbags 5 are piled up at a height of 30 centimeters along the slope line 31. The surface of the vegetation sandbag is 5
It is piled up at a steep gradient of about 60 degrees so as to form a minute gradient. After stacking, the embankment 3 is applied to the rear surface of the vegetation sandbag 5 up to its upper end. After the embankment 3 is sufficiently compacted, the vegetation sandbags 5 are stacked on the embankment 3 in the same manner as before, and the embankment 3 is applied to the back surface thereof.
By repeating such work, the embankment 3 of about 1 m is completed.

The surface of the vegetation sandbag 5 forming the surface of the embankment 3 is covered with a base net 1 so that a thick line 11 having water absorbability is laid in the transverse direction. The base net 1 is fixed on the vegetation sandbag 5 using hook pins 13 or the like. On this base net 1, rope-like slow-release fertilizers 2 are attached at the top and the middle in the transverse direction. For attachment, the hook 22 may be hooked on the base net 1. After installing the base net 1 in this way, an extra geogrid material 4 is wound up from the skirt line on the base net 1 with the vegetation sandbag 5 and the rope-like slow-release fertilizer. The hook is fixed to the vegetation sandbag at the upper end of the geogrid material 4 and at an appropriate place midway. When the embankment of the first layer is completed in this way, the steep slope embankment is completed by stacking the embankments with the second and third layers as in the case of the first layer. A base net is laid on the entire surface of the embankment, and rope-like slow-release fertilizer is installed at intervals.

The base net of the present invention is defined in the embodiment as long as it is made of a water-absorbing material with sufficient gaps for vegetation organisms sprouted from vegetative sandbags to grow through them. There is no such thing. From the viewpoint of improving the water absorption, it is desirable that the base net is made of a super absorbent resin or super absorbent fiber. The rope-like slow-release fertilizer may be attached to the base net in advance, or may be attached to the geogrid material that is rolled up on the vegetation sandbags.

Further, even if it is not a woven net, as shown in FIG. 4, a thick sheet 1 made of a fibrous material having water absorption property.
It is like a slit-like gap 16 like expanded metal that is formed by intermittently inserting cuts 15 of about 10 cm in length at intervals of several centimeters in 4 and extending in the direction perpendicular to the cuts. And so on.

Furthermore, as the rope-like slow-release fertilizer is not limited to the embodiments, for example, as shown in FIG. 5, there is a slow-acting fertilizer 23 having small sizes, such as high control (R) of water permeable material It is also possible to use such a thing as enclosed in a long thin bag 24 made of.

Furthermore, it is also possible to form the foundation net 1 with palm strap straw rope as thick line-shaped, absorbent. As shown in FIG. 6, the straw ropes 17 are arranged in parallel, and the first and second ropes are tied together with an aluminum ring 18 at intervals of 20 cm. At the midpoint of the knot, tie the second and third wires in the same way. In this way, by connecting all the straw ropes and pulling them in the direction perpendicular to the straw ropes, a net-like object having a rhombic mesh is formed.

Further, as shown in FIG.
Absorbs water on a fine thread net 10 with a mesh of 5 cm square
Netted with a cotton-like material 19 with good properties
It may be used as 1. A similar striped net with horizontal stripes
The rope may be attached to form the base net.

As a sheet material laid on the vegetation sandbags
As shown in Fig. 8, attach the upper end to a water-retaining nonwoven fabric.
Except for the hot-sink material 6 with vertical cuts 15
It may be. Attached rope-like slow-release fertilizer 2 at the top
You may keep it.

[0016]

Since the present invention is constructed as described above, it has the following features. (1) Since the sheet material with good water absorption covers the vegetation sandbags, rainwater and the like are absorbed by the sheet material. Since the vegetation sandbag is in contact with this sheet-like material, it can slowly absorb water. (2) Since the sheet-like material is provided with a sufficient space for the vegetation to pass through, the vegetation organisms once germinated from the vegetation sandbags are not obstructed by the sheet-like material and hindered from growing. By installing fertilizer with a long-term fertilizing effect on 3 sheets, rainwater will dissolve the fertilizer, and the sheet will absorb it together with water and slowly supply it to the plant life. Fertilizer can be supplied to plant life for a long time.

[Brief description of drawings]

FIG. 1 is a side view showing a construction state of a base net and a slow-release fertilizer.

FIG. 2 is a perspective view showing an example of a base net.

FIG. 3 is a perspective view showing an example of a rope-like slow-release fertilizer.

FIG. 4 is a perspective view showing another example of the base net.

FIG. 5 is a perspective view showing another example of rope-like slow-release fertilizer.

FIG. 6 is a perspective view showing another example of the base net.

FIG. 7 is a plan view showing another example of the base net.

FIG. 8 is a plan view showing an example of a sheet-shaped material.

[Explanation of Codes] 10 Fine Thread Net 1 Base Net 11 Thick Wire 12 Synthetic Fiber 13 Hook Pin 14 Thick Sheet 15 Cuts 16 Gap 17 Straw Rope 18 Aluminum Ring 19 Cotton-like Material 2 Rope-like Slow-release Fertilizer 20 Woodace 21 Net Material 22 Hook 23 Slow-acting fertilizer 24 Thin bag 3 Embankment 30 Embankment foundation 31 Hosojiri line 4 Geogrid material 5 Vegetative sandbag 6 Ward curtain

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Added

[Correction content]

[Figure 7]

[Procedure 3]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Added

[Correction content]

[Figure 8]

Claims (4)

[Claims] 1. A geogrid material is laid on the embankment base in a state of being left over from the slope line, a vegetation sandbag is piled up on the zitogrid material along the slope line, and the soil is placed behind the vegetation sandbag, In the construction of a steep slope embankment that winds up the surplus geogrid material on the vegetation sandbag, a sheet-like object made of a water-retaining material and provided with a gap on the entire surface through which vegetation sufficiently passes, A method for constructing a steep slope embankment, characterized by being laid on the vegetation sandbag. 2. A method for constructing a steep embankment, characterized in that slow-acting or slow-acting fertilizers kept at predetermined intervals are placed on the sheet-like material according to claim 1. 3. The method for constructing a steep slope embankment according to claim 2, wherein the slow-acting or slow-acting fertilizer formed in a rope shape is attached to a sheet-like material at predetermined intervals. 4. The slow-acting or slow-acting fertilizer formed in a rope shape is attached to a geogrid material in a portion to be wound on a vegetation sandbag at predetermined intervals. Construction method of steep slope embankment.