JP2002161537A - Greening method for hard sloped face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a greening method through which the thickness of a rooting layer can be made in a layer as thick as 30 cm suitable for growth of abor and the vegetation base material or soil dressing forming the thick rooting layer can be securely retained on a hard slope face for a long time. SOLUTION: In this green method, vegetation are forced positively to grow on a hard slope face 20 on which rocks are exposed or having a hard layer 21 made of mortar or the like on the surface, by fixing a number of fence-like bodies 10 arranged on the hard slope face 20 by anchor pins 30 or the like, a plurality of dams 10a having a specified height and continuing zigzag are constituted. The upper part of these respective fence-like bodies 10a is covered with a net-like body 40 and then, a vegetation base material or soil dressing containing fertilizer or a soil improving material or a mixture that plant seeds are mixed with the above vegetation base material or the soil dressing are injected to form a rooting layer 50 having a specified thickness on the hard slope face 20 by using the net-like body 40 and respective fence-like bodies 10 to make the seeds in the vegetation base material or the soil dressing or make a cutting into the seeding layer 50. In this way, greening on the hard slope face 20 can be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope revegetation method, and more particularly, to a slope having a hard rock having bare rock or a hard layer made of mortar or the like on the surface. It relates to a greening method suitable for the case.

[0002]

2. Description of the Related Art For example, on the side of a newly formed road in a mountainous area or on a newly constructed ground, if the rock on the slope is considered not to collapse, the rock is considered to be exposed as it is, and the surface of the rock is likely to collapse. In some cases, a mortar or the like is sprayed on the hard layer to form a hard layer, and the hard layer protects the slope.

However, such hard layers and exposed rocks have been cracked due to long-term weathering and require new protection. Further, since the hard layer and the bedrock made of mortar or the like lack aesthetic appearance as they are, there is an increasing demand for covering these surfaces with plants to make the scenery aesthetically pleasing.

[0004] Since the new protection of the hard slope and the maintenance of the landscape as described above can be achieved at the same time by greening the hard slope, various greening methods for that purpose have already been proposed. . For example, Japanese Patent Application Laid-Open No. 7-1
No. 58072 discloses a method in which a large number of wings called wings are fixed on a hard slope and a vegetation base material is sprayed between these wings. However, since there is a distance between each wing, The vegetation substrate may flow down from between each wing.

For this reason, for example, as shown in FIG.
A large number of through holes are made in a hard layer such as mortar, and a water collecting mat and a partition net are placed on the hard slope, and a growth base material for plants (vegetation base material) is sprayed on these. In addition, a construction method using this vegetation base material has been proposed. In the construction method shown in FIG. 12, a vegetation base material rich in water retention is used, and the moisture in the ground is supplied to the water collecting mat from the through holes formed in the hard layer. It promotes invasion and enables repair and reinforcement of aging hard layers.

[0006] The revegetation method shown in Fig. 12 targets only vegetation plants and so-called "herbs".
Therefore, the thickness of the vegetation base material is only about 10 cm at most. In other words, the partition net that regulates the thickness of the vegetation base material has a height of only about 10 cm at most, and can not only be configured as a long continuous one in the lateral direction, but also on a hard slope. Can be easily fixed.

However, in order to actually protect the hard slope by vegetation, it is necessary to employ plants that are more “woody” than “herbaceous”. Because the root system of a herbaceous plant is so shallow and short, it only burrows over the surface of the hard layer or penetrates into a thin vegetation substrate of 10 cm. It is almost impossible to protect hard slopes. On the other hand, the root system of "woody species" penetrates into the hard layer and reaches the ground or rock,
It is most suitable to use "woody plants" as a vegetation plant for greening hard slopes. However, in the conventional method shown in FIG. 12, the thickness of the vegetation base material is extremely thin, so that it is almost impossible to perform vegetation and greening using "woody plants".

Therefore, the present inventors have conducted research on how to reliably protect hard slopes and revegetate, and as a result, it has become possible to adopt woody plants as vegetation plants. With the conclusion that it was good, the present invention was completed.

[0009]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above-mentioned background, and the problem to be solved is a thickness suitable for planting woody plants on a hard slope. Is to form a rooting layer.

[0010] First, the object of the invention according to claims 1 and 2 is that the thickness of the rooting layer can be about 30 cm suitable for the growth of woody plants, and It is an object of the present invention to provide a revegetation method that can surely hold the vegetation base material and the soil forming the thick rooting layer on a hard slope for many years.

An object of the invention according to claims 3 and 4 is to make the greening method according to claim 1 or 2 more effective, including the depth of the water retention bag. The thickness of the rooting layer should be 30 suitable for the growth of woody species.
cm, as well as having sufficient water retention while securely holding the vegetation base material and the soil forming this thick root layer on a hard slope for many years. An object of the present invention is to provide a greening method that can be used.

An object of the invention according to claim 5 is to implement the greening method according to claim 3 or 4 by employing a thick net instead of the net-like body and the fence-like body. Not only can the thickness of the rooting layer, including the depth of the water retention bag, be about 30 cm suitable for the growth of woody plants, but also the vegetation base forming this thick rooting layer. It is an object of the present invention to provide a greening method capable of ensuring that materials and soil are securely held on hard slopes for many years and have sufficient water retention.

[0013]

Means for Solving the Problems To solve the above problems, means according to the first aspect of the present invention will be described with reference numerals used in the following embodiments. A greening method in which a plant is actively grown on a hard slope 20 having a hard layer 21 made of mortar or the like on its surface,
By fixing a large number of fences 10 arranged on the hard slope 20 with the anchor pins 30 or the like, a plurality of zigzag continuous weirs 10a having a predetermined height are formed. After the upper part is covered with the mesh-like body 40, a vegetation base material or fertilizer soil containing fertilizer or soil improvement material, or a mixture of these with plant seeds is injected between and above each of the fence-like bodies 10, and the mesh-like shape is formed. Body 40 and each fence 1
0 to form a rooting layer 50 of a predetermined thickness on the hard slope 20 to germinate seeds in the vegetation base material or the soil,
Alternatively, by cutting the rooting layer 50, the hard slope 2
A greening method characterized by performing greening on zero ", and means taken by the invention according to claim 2 is:
“A hard slope 20 having a rock layer left uncovered or having a hard layer 21 made of mortar or the like on its surface
In addition, a greening method for actively growing plants, which has a predetermined height by fixing a number of fences 10 arranged on a hard slope 20 with anchor pins 30 or the like. To form a plurality of weirs 10a that are continuous in the horizontal direction, and connect these weirs 10a that are continuous in the horizontal direction with vertical weirs 10a.
Is covered with a net 40, and then each fence 10
Between and above, a vegetation base material or soil containing fertilizer or soil amendment, or a mixture of these and plant seeds is injected, and the net 40 and the fences 10 are used to inject the material on the hard slope 20. A rooting layer 50 having a predetermined thickness is formed to germinate seeds in the vegetation base material or the soil, or the rooting layer 50 is formed.
A greening method, characterized in that greening is performed on the hard sloped surface 20 by applying cuttings to the hard sloped surface 20.

That is, these claims 1 and 2
In the greening method according to the above, first, a large number of fences 10 are fixed in a continuous state on the hard slope 20 by the anchor pins 30 and the like. The continuous weir 10a is formed. This is because, depending on the height of each fence-shaped body 10, the thickness of the later-formed rooting layer 50 is, for example, 3
This is for the purpose of increasing the thickness to about 0 cm, and for ensuring that the retaining of the weir 10 a composed of a large number of fences 10 on the hard slope 20 can be maintained by the anchor pins 30.

When the weirs 10a are formed, for example, as shown in FIGS. 8A and 8B, if the shape of the weirs 10a is zigzag, a root layer to be supported by each weir 10a is formed. This is advantageous because the earth pressure of 50 can be dispersed not only directly below the hard slope 20 but also in the lateral direction. This is the greening method according to claim 1. Further, as shown in FIG. 8 (b), connecting between the weirs 10a located in the horizontal direction by the weirs 10a in the vertical direction makes the connection between the weirs 10a strong, which is advantageous. It becomes something. This is the greening method according to claim 2.

Further, a large number of fences 10 are connected to the anchor pins 3.
When fixing on the hard slope 20 by 0, each fence-shaped body 10 may be piled up in two steps or three steps. That is, when the height of one fence 10 is small,
Since the rooting layer 50 having a sufficient height (depth) cannot be formed by only one of the fences 10, the fence 1
Zeros are stacked in two or three levels to secure the height.

Weir 1 with each fence 10 on hard slope 20
0a is completed, the net 40a is placed on the upper surface of the weir 10a.
This is to ensure that the vegetation substrate or the soil to be sprayed later is held on the hard slope 20. In the following embodiment,
A slope-side net 41 similar to the mesh 40 stretched over the weir 10a is connected to the hard slope 20 before forming each weir 10a.
It is to be laid on the top,
The vegetation base material or the soil can be more reliably held on the hard slope 20.

The vegetation base material or fertilizer or soil containing fertilizer or soil improving material is injected between the barriers 10 of the weir 10a formed as described above by means such as spraying. The injection of the vegetation base material or the soil can be performed by various methods, but means such as spraying the pulverized vegetation base material or the soil using only air pressure are employed. The vegetation base material or the soil is injected between the fences 10 once with the vegetation base material or the soil without the seeds of the vegetation plant up to the reticulated body 40, and the vegetation plant seeds are further placed thereon. In some cases, the vegetation base material or the soil is covered with only the surface layer.

As described above, the weirs 10a composed of the plurality of fences 10 and the net 40 form the rooting layer 50 that is sufficiently held on the hard slope 20. Therefore, by germinating or cutting the seeds in the root layer 50, the greening method of the present invention is completed.

The fence 10 used for adopting such a greening method is, for example, a hard method in which a bedrock is left bare or a hard layer 21 made of mortar or the like is provided on the surface. A fence 10 for forming a plurality of continuous weirs 10a having a predetermined height on the hard slope 20 and fixed on the surface 20 by an anchor pin 30 in a continuous state, and having an anchor pin at one end. A first frame body 11 having a fixing portion 13 through which the base member 30 is inserted, and a plurality of holes at substantially the center thereof, into which plant roots can enter;
Has a fixing portion 14 that is slidably mounted in a lateral direction with respect to the other end and through which the anchor pin 30 is inserted at the other end.
A fence 10 used in a greening method characterized by comprising a second frame 12 having a large number of holes into which plant roots can enter at substantially the center thereof.

That is, the fence 10 is mainly constituted by the first frame 11 and the second frame 12 so that the fence 10 can be firmly fixed on the hard slope 20 at a certain height. In order to freely adjust the length in the lateral direction while maintaining the required rigidity, the second frame 12 is slidable with respect to the first frame 11. .

Since the fence-like body 10 is fixed on the hard slope 20 by the anchor pin 30, the insertion hole for the anchor pin 30 is provided in the first frame 1
1 and a fixing portion 14 provided at the other end of the second frame 12. Further, since these fixing portions 13 and 14 serve to connect the respective fences 10 to each other, the fixing portions 13 of one fence 10 are fixed to the other fences 10. It is integrated by inserting the step portion 13a into the portion 14.

Further, the first frame 11 and the second frame 12 of each fence 10 form the above-described weir 10a, and the weir 10a causes the flow of underflow water in the rooting layer 50 to flow. In order to prevent the vegetation base material or the soil from flowing out while allowing the roots of the vegetation plant P to be stretched to the opposite side and to be entangled with the net 11a, the first frame 11 and the second frame 11 The two frame 12 has a large number of openings substantially in the center.

Next, in order to solve the above-mentioned problem, a means adopted by the invention according to claim 3 is that "the bedrock is left bare or the surface thereof has a hard layer made of mortar or the like. A greening method in which plants are actively grown on the hard slope 20. A large number of storage holes 23 are formed on the hard slope 20 for a water retention bag 70 for storing a water retention material, fertilizer, and the like 71. In addition, by fixing a large number of the fences 10 arranged by the anchor pins 30 or the like, a plurality of weirs 10a having a predetermined height and continuing in a zigzag manner are formed, and each of the weirs 10a on the hard slope 20 is stored. While storing the water retention bag 70 in the hole 23 and covering the upper part of each weir 10a with the mesh-like body 40, between and above each fence-like body 10, a vegetation base material or fertilizer or soil containing fertilizer or soil improvement material, Or to these The roots 50 having a predetermined thickness are formed on the hard sloped surface 20 by the net-like body 40 and the fences 10 by injecting the mixture containing the seedlings, and the seeds in the vegetation base material or the soil are germinated. Or a method of greening characterized by performing greening on the hard sloped surface 20 by cutting the rooting layer 50, and means taken by the invention according to claim 4 is: A greening method in which plants are actively grown on a hard slope 20 in which the bedrock is left bare or a hard layer made of mortar or the like is provided on the hard slope 20; A plurality of storage holes 23 for a water retention bag 70 for storing a water retention material, fertilizer, etc. 71 are formed on the top, and a number of arranged fences 10 are fixed by anchor pins 30 or the like, so that a predetermined height is obtained. Having a plurality of laterally continuous 10a, and these laterally continuous weirs 10a are connected by longitudinal weirs 10a to store the water retention bags 70 in the respective storage holes 23 on the hard slope 20 and to make each weir After covering the upper part of 10a with the mesh body 40, the vegetation base material or fertilizer soil containing fertilizer and soil improvement material, or the mixture of these with the seeds of the plant is injected between and above each fence body 10. A rooting layer 50 having a predetermined thickness is formed on the hard slope 20 by the net-like body 40 and the fences 10, and the seeds in the vegetation base material or the soil are germinated, or the rooting layer 50 is cut. , The greening on the hard sloped surface 20 is performed.

That is, these claims 3 and 4
According to the greening method according to the first aspect, before forming the weir 10a formed by the large number of fences 10 on the hard slope 20 in the greening method according to Claim 1 or 2, a large number of storages are stored on the hard slope 20. A hole 23 is formed, and a water retention bag 70 containing a water retention material 71 or the like is stored and constructed in each of the storage holes 23, whereby the root layer 50 including the water retention bag 70 is formed. The depth should be 30 suitable for the woody plant P to take root.
cm.

Each of the storage holes 23 is formed in a woven or nonwoven fabric or net shape using a material such as natural fiber or degradable plastic which is decomposed by rainwater or soil microorganisms. It becomes a fertilizer of the plant P or a constituent material of the hard slope 20. Then, in the storage hole 23, as shown in FIG. 10B, a water retention material 71 is stored before the storage operation for each storage hole 23 of the hard slope 20 is performed. As shown in FIG. 9, the water retention bag 70 in which the water retention material 71 is stored forms a portion similar to the rooting layer 50 on the hard slope 20 where the root system of the vegetation plant P easily develops.

Thus, the depth of the water retention material 71 and the like in the water retention bag 70 and the depth of the rooting layer 50 formed by spraying the vegetation base material on the hard sloped surface 20 It forms a soil portion of a depth suitable for rooting of the plant P. Therefore, even if the height of the weir 10a is low, the rooting layer having a sufficient depth is formed as a whole by the tree planting method of claim 3, and the woody plant P is sufficiently rooted. The hard slope 20 is protected by the sufficiently tall roots.

In addition, by disposing the water retention bag 70 on a part of the hard layer 21 through which water easily flows in the surface layer,
The rainwater penetrates into the lower layer of the hard layer 21 through the water retention bag 70 and the moisture in the lower layer of the hard layer 21
Since the water is supplied to the zero side, each of the water retention bags 70 performs replenishment of water that may be insufficient when the vegetation plant P grows in the root layer 50. This also makes the rooting of the woody plant P sufficient.

By employing such a water retention bag 70, it is not necessary to make the height of the fence-shaped pair 10 around 30 cm. That is, if the inside of the water retention bag 70 also becomes a part of the root layer 50, the height of the fence 10 is reduced by the depth of the water retention bag 70, and the configuration of the fence 10 is further improved. It can be simple.

Therefore, in the revegetation method using the water retention bag 70, the growth of the vegetation P can always be performed stably, and the revegetation by the vegetation P on the hard slope 20 is performed sufficiently and reliably. You can do it.

[0031] In order to solve the above-mentioned problem, a means adopted by the invention according to claim 5 is a method using a hard method in which a bedrock is bare or a hard layer having a hard layer made of mortar or the like on its surface. A greening method in which plants are actively grown on the surface 20.
Storage hole 2 for water retention bag 70 for storing water retention material, fertilizer, etc.
After forming the water retaining bag 70 in each of the storage holes 23 and covering the hard slope 20 with the thick net 60, the fertilizer is placed on the thick net 60 and above. Vegetation or soil containing soil and soil conditioners,
Or by spraying those mixed with plant seeds, forming a rooting layer 50 of a predetermined thickness on the hard slope 20 by the thick net 60, and germinating seeds in the vegetation base material or the soil, Alternatively, a greening method is characterized in that greening is performed on the hard sloped surface 20 by cutting the rooting layer 50.

That is, in the greening method according to the fifth aspect, while making full use of the advantages of the greening method of the first or second aspect, the advantages of the water retaining bag 70 of the third or fourth aspect are also obtained. It is intended to be used.

In other words, in the greening method according to the fifth aspect, as shown in FIG.
Instead, a thick net 60 fixed on the hard sloped surface 20 by the anchor pin 30 is used. As the thick net 60, for example, a net formed by combining metal wires formed in a coil shape, an expanded metal, a net formed by biodegradable plastics or the like which disappears over time, or the like is used. This thick net 60 is
When developed on the hard slope 20, the “thick net thickness” shown in FIG. 11 is about 10 to 15 cm,
In addition, it forms a vegetation base material or a soil retaining layer in which metal wires or the like are intertwined in a complicated manner.

The thick net 60 has a structure in which the entire volume is reduced by stacking the metal wires and the like on each other, and the space between the metal wires is widened so that the hard slope 20
Even if it is arranged on the top, that is, it is unfolded, its original thickness is to maintain about 10 to 15 cm as described above, and this is fixed on the hard slope 20 by the anchor pin 30. Thereby, it can be easily stretched on the hard slope 20.

Therefore, according to the greening method of the fifth aspect, the ease of construction by the thick net 60 can be fully utilized, and the vegetation P can be sufficiently grown by each water retention bag 70. Thus, the greening by the vegetation plant P on the hard slope 20 can be performed more sufficiently and reliably.

What is important in any of the above-mentioned greening methods according to claims 1 to 5 is that, in particular, the hard layer 21 formed by spraying mortar is almost left as it is, Can be performed with almost no generation of so-called “remaining soil” by destroying the soil.
Of course, the storage hole 2 for the inner water retention bag 70 of the above greening method
For those requiring the formation of 3, the remaining soil for each of the storage holes 23 is generated, but the amount is small enough to be processed at the construction site. The problem of residual soil due to the construction hardly occurs.

In the revegetation method according to any one of claims 3 to 5, wherein the cutting of the woody plant P is employed, the cutting location is changed to the water retaining bag 7.
If it is just above 0, the roots of the woody plant P can extend straight into the water retention bag 70, and the growth of the woody plant P can be performed more reliably. The method of setting the cutting location directly above the water retention bag 70 is very simple. This is because the root layer 50 is formed on the upper surface of the water retention bag 70 by mixing and spraying water on the vegetation base material. This is because a visible depression is naturally formed by the draining of the water, so that the water storage bag 70 can be easily found directly above.

[0038]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fence-shaped body used in the present invention; FIG. 7, the first frame 1 having a substantially U-shaped cross section
Mainly composed of the first and second frames 12,
The second frame 12 can slide with respect to the first frame 11. In other words, when the fence 10 is to be stored or transported, the second frame 12 is completely housed in the first frame 11 to shorten the entire length thereof. When used for construction, for example, as shown in FIG. 6, the second frame 12 is pulled out to the maximum, and has a sufficient length as a part of the weir 10a. Things.

When the second frame 12 is pulled out of the first frame 11, the positional relationship between the two should preferably be kept unchanged.
This is performed by a guide portion 15 formed integrally with the end on the frame 11 side. That is, as shown in FIG. 7, a guide portion 15 having a portion protruding inward is formed on the right end side of the first frame 11 in the drawing, and this guide portion 15 is provided on the second frame 12 side. It is always locked in the formed guide groove 15a.

When the second frame 12 of the fence-shaped body 10 is pulled out from the first frame 11, it is necessary to fix the two between them. The mounting bolt 17 does this. That is, the mounting bolt 17 is used for the first frame 1
It is inserted into one hole formed in one end (the left end in FIG. 6 in FIG. 6) and fixed by a nut, and a part thereof is an upper edge and a lower edge of the second frame 12 side. Is inserted through the position adjustment elongated hole 16 formed in the above. As shown in FIG. 6, a plurality of the position adjusting slots 16 are formed on both upper and lower edges of the second frame 12, so that the rigidity of the position adjusting slots 16 is reduced. In addition to preventing the second frame 12 from being lowered due to the presence of the second frame 12, the second frame 12 that is not completely pulled out can be fixed to the first frame 11. In other words, the second frame 12 of each fence 10 is not completely drawn out of the first frame 11 for all fences 10, for example, the hard slope 20
This is because it may be better to shrink it depending on the above state, and it is necessary to shorten the entire length of the fence body 10 at both ends of the weir 10a.
In some cases, the drawer from the frame body 11 is stored in, for example, about 1/3 or about half.

Since the fence-shaped body 10 is fixed to the hard slope 20 by the anchor pin 30, the fixing portion 13 for inserting the anchor pin 30 is provided.
6, are formed at one end (the right end in the drawing) of the first frame 11 and the other end (the left end in the drawing) of the second frame 12, respectively, as shown in FIG. Further, in the present embodiment, the fixing portion 13 on the first frame 11 side of one fence 10 is attached to the fixing portion 14 on the second frame 12 side of the fence 10 adjacent thereto by an anchor pin. In order to allow easy connection by using a common insertion hole for inserting the base 30, as shown in FIG. 6, a step 13 a is provided at the lower end of the fixed part 13 on the first frame 11 side. Is formed. Of course, the step 13a of the fixing portion 13
Is a fixing portion 1 on the side of the fence 10 adjacent to the fence 10.
4 is inserted into the insertion step 14a formed in FIG.

Further, the fence 10 is constructed so that the roots of the vegetation P can be sufficiently stretched over the fence 10 when the weir 10a is constructed as shown in FIG. , A large number of holes are formed on substantially the entire surface of the central portion.
As shown in FIGS. 6 and 7, the fence-shaped body 10 of the present embodiment has openings at substantially the centers of the first frame 11 and the second frame 12, and meshes 11 a and 12 a with the openings. With this, a hole is formed. Of course, these nets 11a
And 12a do not easily pass through the vegetation base material or the soil, which will be described later, but needless to say, have a stitch that allows water or the roots of the vegetation plant P to pass through.

The nets 11a and 11a of the fence 10
Like the meshes 40 and 41 described later, 2a may be constituted by a so-called “wire mesh”, but is embedded in the rooting layer 50.
If there is a high possibility that 0 will have a lot of moisture, use a non-corrosive net made of synthetic resin or the like. it can.

Now, in order to green the hard slope 20 using the fences 10 as described above, a large number of fences 10 are required.
Each of the anchor pins 30 is inserted into the insertion hole of each of the fixing portions 13 and 14 so that the weir 10a as shown in FIG.
Are fixed as shown in FIG. 1 and FIG. In order to fix the anchor pin 30 to the hard slope 20, when the hard layer 21 on the hard slope 20 is thin, the anchor pin 30 may be directly driven into the hard layer 21. Rock slope is hard slope 20
When it is located above, the anchor fixing hole 22 for fixing the anchor pin 30 may be formed on the hard slope 20.
The distance between the anchor fixing holes 22 does not need to be so strict. This is because the second frame 1
2 is slidable with respect to the first frame 11, so that the distance between the fixing portions 13 and 14 can be freely adjusted.

In fixing each of the fences 10 on the hard slope 20, as shown in FIG. 2, a slope-side net 41 is previously stretched on the hard slope 20. You may leave. The reason is that the holding of the vegetation base material or the soil as fine particles on the hard slope 20 is performed not only by each of the fences 10 and the mesh 40 described later but also by the slope-side mesh 41. The root layer 50 on the hard slope 20
This is to ensure the retention of. In particular, the slope-side net-like body 41 is effective when the hard layer 21 on the hard slope 20 has a planar shape.

Although the nets 40 and 41 may be constituted by a so-called "wire mesh" as described above, they are to be buried in the rooting layer 50. When it is highly possible that 50 has a high moisture content, a non-corrosive net made of a synthetic resin or the like may be used to carry out the process.

Next, as shown in FIG. 4, a net-like body 40 is fixed on the upper surface of each fence-like body 10 fixed on the hard slope 20, and a vegetation base as shown in FIG. The root layer 50 is formed by spraying the material or the soil. When it is desired to include seeds of the vegetation plant P in the root layer 50,
The following is efficient. That is, for example, the net 4
The rooting layer 50 on the lower side with respect to 0 is constituted by a vegetation base material or seed soil that does not include the seeds of the vegetation plant P, and a vegetation base material that includes the seeds of the vegetation plant P on its upper surface. It sprays the soil. Then, the seeds of the vegetation plant P are sown only on the surface layer of the root layer 50, and waste is eliminated.

When vegetation of the rooting layer 50 of the vegetative plant P is not performed from its seeds but by cutting only,
When the woody seeds are not mixed into the vegetation base material or the soil for forming the surface layer of the rooting layer 50, but if it is desired to make herbs bloom around the cuttings of the woody species, In some cases, herbaceous seeds are mixed into a vegetation base material or a soil for forming the surface layer of the rooting layer 50, and cuttings of woody trees are sometimes performed.

Also, seeds of woody plants and herbaceous materials are mixed together into a vegetation base material or a soil, and sprayed on the surface of the rooting layer 50 so that the flowers of the herbaceous materials first bloom, and Sometimes this species is allowed to grow slowly. Of course, the use of cuttings, the mixing ratio of various seeds, and the like may be appropriately selected.

When tree vegetation is vegetated by cuttings, it goes without saying that cuttings grown at different locations are planted on the rooting layer 50.

As a method for cutting the surface of the rooting layer 50, the cutting is directly planted, and the root is wrapped in a net together with a little soil. And inserting the portion wrapped in the net into a cutting hole formed in the surface layer of the root layer 50.
The root portion of the cuttings and the soil are stored in a tubular shape formed of a material that collapses in the rooting layer 50, and this tubular shape is formed on the surface layer of the rooting layer 50. A method of inserting into a cutting hole that has been inserted. The tubular layer formed of a material that collapses in the rooting layer 50 is put in advance,
After that, a method of packing the roots of the cuttings and the soil in the tubular material can be considered. If a vegetation base material such as a water retention material is put in advance in these nets or bags, the water absorption of the cuttings can be maintained and the growth can be ensured.

Woody plants suitable for vegetation from seeds as described above are as exemplified in Table 1 below.

[Table 1]

Trees suitable for vegetation by cutting are shown in Table 2 below.

[Table 2]

In this embodiment, the height is about 27 cm.
And the thickness of the root layer 50 coming out from the upper end of the fence body 10 is set to 3 to 5 cm. As a result, the thickness of the root layer 50 is reduced. Is 30 to 32 cm. Thus, even if the vegetation P is a woody plant, its root system can sufficiently develop in the rooting layer 50 as shown in FIG. Further, the interval between the weirs 10a formed by connecting a large number of the fences 10 is set to 1 to 2 m as shown in FIG.

When the weirs 10a are formed, for example, as shown in FIGS. 8A and 8B, if the shape of the weirs 10a is zigzag, the root layer to be supported by each weir 10a is formed. This is advantageous because the earth pressure of 50 can be dispersed not only directly below the hard slope 20 but also in the lateral direction. Further, as shown in FIG. 8B, the weir 10 located in the lateral direction is provided.
It is advantageous that the connection between the members a is performed by the vertical weirs 10a because the connection between the weirs 10a becomes strong.

FIG. 9 shows a state after the greening method according to the third aspect is applied. In this greening method, the water retaining material 71 and the like are stored before the weir 10a according to the first aspect is formed. The water retention bag 70 is stored in the storage hole 23 formed on the hard slope 20 as shown in FIG.

The water retention bag 70 of this embodiment has a diameter of about 60 mm and a height of about 1 mm, as shown in FIG.
It is formed as a 00 mm bag, but it is needless to say that this size can be freely changed. Further, the upper end of the water retention bag 70 is so exposed that a surface thereof is largely exposed when a water retention material 71 or the like is put therein.
It is left open. The water retention bag 70 forms an exposed portion of the water retention material 71 or the like as shown in FIG. 10A at a predetermined portion of the hard slope 20. Since the holding and the formation of the portion where the roots of the vegetation plant P can be stretched on a part of the hard slope 20, they may disappear after a certain period of time. Therefore, each water retention bag 70 of this embodiment
Is woven, non-woven,
Alternatively, it is formed in a net shape. Of course, as the material of the water retention bag 70, a component-decomposable plastic that can be decomposed by microorganisms in the soil may be employed.

As shown in FIG. 10 (b), fertilizer, water retention material, etc. 71 are stored in the water retention bag 70. The water retention material, etc. 71 is shown in Table 3 below. Various things can be done as shown. That is, when the hard slope 20 is also to be modified, the material described in the “type of material” column according to the “soil improvement function” written in the rightmost column of Table 3 is used. You just have to select

[0059]

[Table 3]

Of course, the water retention bag 70 filled with the water retention material 71 as described above must be applied to the hard sloped surface 20 or the hard layer 21 on the surface thereof. As shown in (1), the storage hole 23 for storing the water retention bag 70 is formed in the hard slope 20. The storage holes 23 may be formed simultaneously with the formation of the anchor fixing holes 22 for the anchor pins 30. As shown in FIG. 10A, the storage holes 23 are formed in a grid at intervals of about 30 cm. , Height is about 100mm and about 60m
What is necessary is just to set it as the thing of a magnitude | size suitable for accommodating the water retention bag 70 which can become diameter of m.

FIG. 11 shows a state after the greening method according to claim 5 has been applied. In this greening method, the thick net 60 is formed after the water retaining bag 70 is applied to the hard slope 20. Is finally laid to form the rooting layer 50 having a fine water passage that passes through the water retention bags 70 to the lower side of the hard layer 21. Therefore, the greening method according to the fifth aspect has the advantages of using the thick net 60 and the advantages of employing the water retention bag 70, respectively.

That is, the greening method shown in FIG. 12 uses a thick net 60 instead of the fence 10 and the net 40. The thick net 60 used in this greening method is a net formed by combining metal wires formed in a coil shape, an expanded metal, or a net that is made of biodegradable plastics and the like which disappears over time, and the like. is there. The thick net 60 is stretched by expanding the thick net 60 on the hard slope 20 and fixing it with the anchor pins 30. After that, the thick net 60 is sprayed with a vegetation base material or soil, so that the root layer 5 for the vegetation plant P is formed on the hard slope 20.
Forming 0 is the same as the above-mentioned greening method of claim 1.

As described above, the thick net 60 is formed, for example, by entanglement of a plurality of metal wires, and when expanded, the plane shape literally becomes a "net" shape. . The height of the thick net 60 (the height from the hard slope 20 to the top when stretched on the hard slope 20) is about 10 to 15 cm. As also shown, at the bottom contacting the hard slope 20 the anchor pin 3
0 is fixed on the hard slope 20. In other words, when the thick net 60 is stretched on the hard slope 20, the thick net 60 holds the vegetation base material or the soil blown toward the hard slope 20, and Alternatively, in order to allow the spray of the soil to reach the hard slope 20, it is formed in a “net” shape.

[0064]

As described in detail above, according to the first aspect of the present invention, as described in the above embodiment, "the bedrock is left unexposed or the surface thereof has the hard layer 21 made of mortar or the like. This is a greening method in which plants are actively grown on the hard slope 20 that has been fixed. A large number of fences 10 arranged on the hard slope 20 are fixed by anchor pins 30 or the like, so that a predetermined After forming a plurality of weirs 10a having a height and continuing in a zigzag manner, and covering the upper part of each of these weirs 10a with a mesh body 40,
Between and above each fence 10, a vegetation substrate or fertilizer or soil containing a fertilizer or soil amendment, or a mixture of these with plant seeds is injected, and the net is hardened by the net 40 and each fence 10. By forming a root layer 50 having a predetermined thickness on the slope 20 and germinating seeds in the vegetation base material or the soil, or by cutting the root layer 50, a hard slope 20 is formed.
According to the invention of claim 2, the planting is carried out on a hard slope 20 having a hard layer 21 made of mortar or the like on the surface of which is left uncovered. Is a greening method in which a large number of fences 10 arranged on a hard slope 20 are fixed with anchor pins 30 or the like so that they have a predetermined height and have a predetermined height. Multiple weirs 10
a and these weirs 1
0a are connected by a vertical weir 10a, and the upper part of each of these weirs 10a is covered with a mesh body 40, and then, between and above each of the fences 10, a vegetation base material containing a fertilizer or a soil improving material or Injecting the soil, or those in which plant seeds are mixed, to form a rooting layer 50 of a predetermined thickness on the hard slope 20 by the net-like body 40 and the fences 10,
By germinating seeds in the vegetation base or in the soil, or by cutting the rooting layer 50, greening on the hard slope 20 is performed. " The thickness of the root layer can be about 30 cm suitable for the growth of woody species, and the vegetation base material and the soil that forms this thick root layer can be reliably secured on hard slopes for many years. It is possible to provide a greening method that can be maintained in a forest.

In the invention according to claim 3,
"The rock slope is bare or the hard slope 20 having a hard layer made of mortar or the like on its surface,
This is a greening method in which plants are actively grown, and a large number of storage holes 23 for water retention bags 70 for storing water retention materials, fertilizers, etc. 71 are formed and arranged on a hard slope 20. Is fixed by an anchor pin 30 or the like to form a plurality of zigzag continuous weirs 10a having a predetermined height, and a water retention bag is provided in each storage hole 23 on the hard slope 20. 70, and the upper part of each weir 10a is covered with a mesh body 40, and between and above each fence body 10, a vegetation base material or fertilizer containing fertilizer or soil improvement material, or seeds of these plants Is injected, and the root layer 50 having a predetermined thickness is formed on the hard slope 20 by the reticulated body 40 and the fences 10, and the seeds in the vegetation base material or the soil are germinated. Or cutting the rooting layer 50 According to the invention, the hard rock is left uncovered or the surface thereof has a hard layer made of mortar or the like. Hard slope 20
A greening method in which plants are actively grown, in which a large number of storage holes 23 for water retention bags 70 for storing water retention materials, fertilizers, etc. 71 are formed on a hard slope 20 and arranged. By fixing a large number of the fences 10 formed by the anchor pins 30 and the like, a plurality of weirs 10a having a predetermined height and being continuous in the horizontal direction are formed, and the weirs 10a which are continuous in the horizontal direction are formed. The spaces are connected by the vertical weirs 10a, the water retention bags 70 are stored in the respective storage holes 23 on the hard slope 20, and the upper part of each of the weirs 10a is covered by the net 40, and Between and above 10, a vegetation base material or soil containing fertilizer or soil amendment, or a mixture of these with plant seeds is injected, and the mesh 40 and the fences 10 are used to inject the material onto the hard slope 20. Rooting layer 5 of predetermined thickness And germinating the seeds in the vegetation base material or the soil, or by cutting the rooting layer 50 to perform greening on the hard slope 20 ". There is, by this, the greening method according to claim 1 or claim 4 can be made more effective, and the thickness of the rooting layer is about 30 cm suitable for growing trees. Not only can it be possible to maintain the vegetation base material and the soil that forms this thick rooting layer on hard slopes for many years, but also have sufficient water retention. A possible greening method can be provided.

According to the fifth aspect of the present invention, it is preferable that the plant be positively grown on a hard slope 20 where the bedrock is left bare or a hard layer made of mortar or the like is provided on the surface. A water retention bag 70 for storing water retention materials, fertilizers, and the like on the hard slope 20.
After a large number of storage holes 23 are formed and the water retention bag 70 is stored in each of the storage holes 23,
Is used to cover the hard slope 20, and then spray the vegetation base material or fertilizer soil containing fertilizer or soil improvement material, or a mixture of these with plant seeds, on the thick net 60 and above it. The hard slope 20 by the thick net 60
The rooting layer 50 having a predetermined thickness is formed thereon, and the seeds in the vegetation base material or the soil are germinated, or cuttings are applied to the rooting layer 50 so that greening on the hard slope 20 is performed. There is a feature in its configuration in that "it has been made", whereby the greening method according to claim 3 or 4 is implemented by adopting a thick net in place of the net and the fence. Not only can the thickness of the rooting layer be about 30 cm suitable for growing woody plants,
To provide a revegetation method capable of ensuring that the vegetation base material and the soil on which the thick rooting layer is formed on a hard slope for a long time and have sufficient water retention. You can do it.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where vegetation has been performed by a greening method according to the present invention.

FIG. 2 is a partial cross-sectional view of a hard slope showing a state before installing a fence-like body according to the present invention.

FIG. 3 is a cross-sectional view showing a state in which the fence-shaped body is fixed on a hard slope by an anchor pin.

FIG. 4 is a cross-sectional view showing a state in which a net-like body is stretched on each fence-like body fixed on a hard slope.

FIG. 5 is a cross-sectional view when a vegetation base material or soil is sprayed between fences to form a rooting layer.

FIG. 6 is an enlarged perspective view showing a state where a second frame of the fence-shaped body of FIG. 5 is pulled out.

FIG. 7 is a sectional view of the fence.

FIG. 8 shows a state of a weir formed on a hard slope by the fence-like body, wherein (a) shows a case where only a horizontal weir is formed, and (b) shows a state of a weir formed in the horizontal direction. It is a top view which shows the case where each is connected by the vertical weir.

FIG. 9 is a partial cross-sectional view of a hard slope in a state where vegetation has been performed by the greening method according to claim 3 or 4.

FIG. 10 shows a preparatory work required for implementing the greening method according to claim 3 or 4, wherein (a) has storage holes for water retention bags formed at predetermined intervals on a hard slope. FIG. 2B is a perspective view of a hard slope in a state, and FIG. 2B is a perspective view showing a state in which a water retention material or the like is packed in a water retention bag.

FIG. 11 is a partial sectional view of a hard slope in a state where vegetation has been performed by the greening method according to claim 5;

FIG. 12 is a partially broken perspective view showing a conventional greening method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fence-shaped body 10a Weir 11 1st frame 12 Second frame 13 Fixed part 13a Step part 14 Fixed part 14a Insertion step part 15 Guide part 16 Position adjustment long hole 17 Mounting bolt 20 Hard slope 21 Hard layer 22 Anchor fixing Hole 23 Storage hole 30 Anchor pin 40 Reticulated body 41 Slope-side reticulated body 50 Rooting layer 60 Thick net 70 Water retention bag 71 Water retention material P Vegetation plant

Claims (5)

[Claims] 1. A revegetation method in which a plant is actively grown on a hard slope having a hard layer made of mortar or the like on the surface of which the rock is left uncovered. By fixing a large number of fences arranged on the slope with anchor pins or the like, a plurality of zigzag continuous weirs having a predetermined height are formed, and the upper part of each of these weirs is covered by a net. Then, between and above each fence, a vegetation base material or fertilizer or soil containing fertilizer or soil amendment, or a mixture of these with plant seeds is injected, and the reticulated body and each fence are used. Forming a rooting layer of a predetermined thickness on the hard slope, germinating seeds in the vegetation base material or the soil, or by cutting the rooting layer, on the hard slope It is characterized by greening Greening method. 2. A greening method in which plants are actively grown on a hard slope having a hard layer made of mortar or the like on the surface of which the bedrock is left bare. By fixing a large number of fences arranged on the slope with anchor pins or the like, a plurality of weirs having a predetermined height and being continuous in the horizontal direction are formed, and these weirs which are continuous in the horizontal direction are formed. Are connected by a vertical weir, and the upper part of each of these weirs is covered with a mesh, and then between and above each of the fences, a vegetation base material or soil containing fertilizer or soil improvement material, or Injecting a mixture of plant seeds into, forming a rooting layer of a predetermined thickness on the hard slope by the net-like body and each fence-like body, seeds in the vegetation base material or soil Germinate or cut into the rooting layer By applying, greening method being characterized in that to perform the greening on the hard slopes. 3. A revegetation method in which plants are actively grown on a hard slope having a hard bed made of mortar or the like on the surface of which the bedrock is left bare. On the slope, by forming a large number of storage holes for water retention bags to store water retention materials and fertilizers, and by fixing a large number of arranged fences with anchor pins, etc.
Construct a plurality of weirs having a predetermined height and zigzag continuously, while storing a water retention bag in each storage hole on the hard slope, and covering the upper part of each weir with a mesh body, Between and above the fences, a vegetation base material or soil containing fertilizer or soil improvement material, or a mixture of these with plant seeds is injected, and the hard slope is injected by the net and each fence. A rooting layer having a predetermined thickness is formed thereon, and seeds in the vegetation base material or the soil are germinated, or cuttings are applied to the rooting layer, so that greening is performed on the hard slope. A greening method characterized by: 4. A revegetation method in which plants are actively grown on a hard slope having a hard bed which is left bare or has a hard layer made of mortar or the like on the surface thereof. On the slope, by forming a large number of storage holes for water retention bags to store water retention materials and fertilizers, and by fixing a large number of arranged fences with anchor pins, etc.
A plurality of weirs that have a predetermined height and are continuous in the horizontal direction are configured, and between these horizontally continuous weirs are connected by upright weirs. A water-retaining bag is housed in each of the weirs, and the upper portion of each of the weirs is covered with a mesh. Injecting the mixture containing, a rooting layer of a predetermined thickness is formed on the hard slope by the net-like body and each fence-like body, or the seeds in the vegetation base material or the soil are germinated, Alternatively, greening is performed on the hard slope by cutting the rooting layer. 5. A revegetation method in which a plant is actively grown on a hard slope having a rock layer left bare or having a hard layer made of mortar or the like on the surface thereof. On the slope, a large number of storage holes for water retention bags for storing water retention materials, fertilizers, etc. are formed, and after storing the water retention bags in each of the storage holes, a thick net is used to cover the rigid slope. After covering the thick net, spray a vegetation base material or soil containing fertilizer or soil improving material, or a mixture of these with plant seeds, on the thick net and above the thick slope, and apply the thick net on the hard slope. To form a rooting layer of a predetermined thickness, germinate seeds in the vegetation base material or the soil, or by cutting the rooting layer, so as to perform greening on the hard slope. Tree planting method characterized by