JP3139983B2 - How to plant rock slopes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for planting on a rock slope, and more particularly, to an effective planting method for a steep slope having a limited area where planting is possible or a hard rock. In addition, a method of combining seeding and planting is provided.

[0002]

2. Description of the Related Art In order to stabilize a slope and to create a natural landscape, a slope planting method of planting on a slope has been carried out. As a method of planting on such a slope, a method such as providing vegetation shelves or fences on the slope and cultivating the soil and planting the soil, or directly excavating the slope and providing a planting hole, Method of planting with soil in the soil, mature trees, container seedlings (pot seedlings)
Such a method has been put to practical use in which the root pot is directly installed with the root pot attached and the growth base is fixed by spraying the growth base so that the root pot is completely covered.

On the other hand, in addition to the above slope planting works,
As disclosed in Japanese Patent No. 02897, planting is performed by spraying a spray material so that the seedlings are completely covered, while holding the seedlings in a space in the mesh of the wire mesh fixed to the slope. There are also things.

[0004]

However, when the above-described slope planting method is applied to a slope having a limited number of places where planting is possible due to poor construction conditions such as a rock slope and a steep slope, there are various cases. Problems occur. First, in the method of planting on a rock slope with fences or other structures on the rock slopes and planting it on the soil, the stability of the structures is lost due to weathering of the rocks over time, and the fence itself is lost. There is a danger that the fence will no longer function due to deterioration of the building or corrosion due to rainfall, and that the soil will flow down. Furthermore, if the slope is steep, it will be difficult to install structures,
There is a possibility that various problems may occur from the viewpoint of construction and safety.

[0005] In the method of digging a pit directly into the bedrock, it is difficult to dig a pit, and in the case of a slope with poor water permeability such as a bedrock slope, the water in the pit is filled with the surrounding bedrock. Because it does not penetrate into the hole, the planting hole is likely to be partially over-humidified,
There are problems such as poor growth of planted trees due to poor drainage. In addition, the pits formed by excavation of the bedrock often become looser than the soil on the general slope, so scouring, inflow of runoff water, and seepage of the runoff water into the slope cause internal stress. For example, slope collapse is likely to occur due to factors such as lowering of the slope.

On the other hand, as in the method described in Japanese Patent Publication No. 6-102897, a root of a seedling is set in a vacant space of a wire mesh fixed to a slope, a planting shelf or a planting hole in the slope, and the root pot is completely completed. In the conventional method of spraying a spraying material so as to be covered with a sap, it is difficult to install a root pot such as a container seedling or the like at a predetermined position without breaking it in actual construction. Especially on slopes with many steep slopes, planting saplings with root pots is heavy,
Care must be taken to protect the root mortar (to prevent the root mortar from collapsing, for example), and there is a drawback that the workability is extremely poor.

[0007] In the method of planting a seedling with a root pot attached to the artificially excavated planting hole, the root cannot be extended sufficiently from the planting hole during the growing process of the seedling. However, there are problems such as planted trees falling down after construction. In addition, seedlings that have undergone looping (excessive root winding phenomenon) that frequently occur in the root system of container seedlings and the like are likely to be corroded in vegetation holes and the like, where they tend to be over-humidified, and planted as they are due to root system development disorders. Then, growth is often hindered.

[0008]

Therefore, in order to solve these problems, the present invention is different from the conventional method of creating a plant that can be artificially planted, and is actively applied to joints or the like where plants can grow originally. Focusing on introducing plants into the area, a method of reliably planting where there is room for the root system of the plant to be planted, and an effective method for steep and hard rock slopes where planting areas are limited To present the planting method, the following planting method is presented.

[0009] (1) sandwiched root system of the following seedling tree height 50cm dropped the Hachido in joints of the rock, by spraying the growth base in said joints using a wet sprayer thereon, fixing the seedlings I do.

(2) A seedling having a height of 50 cm or less is placed on a joint of a bedrock with a height of 50 cm or less, and a growth base is sprayed on the joint using a wet spraying machine from above, thereby allowing the seedling to stand on its own. Fix it.

(3) In the entire greening by the thick layer base material spraying method, the above-described planting method is used in combination only at a place where there is room for tree root system entry such as joints.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a method for securely planting in a place where there is room for entry of a plant root system such as a joint existing on a rock slope. Here, joint refers to a crack (crack) that has occurred on the bedrock, but unlike an artificially created pit, etc., a place where joints naturally occur on the bedrock has an environment where plants can grow. .

Therefore, the present invention focuses on performing effective planting work on such a portion, and provides a rock slope planting work using joints. An embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a schematic view showing the construction of planting work in a rock joint according to the present invention. The root system of the container seedling 104 is sandwiched between joints 102 in the bedrock 100 as planted trees, and the growth base material 106 is sprayed using a wet spraying machine to fix the container seedling 104.

(Embodiment 2) FIG. 2 is a schematic diagram showing another embodiment of planting work in a rock joint according to the present invention. In particular, FIG. 2A shows a method of planting a seedling on a joint, and FIG. 2B shows an entire landscape of the seedling planted according to FIG. 2A on a bedrock. In joint 202 in bedrock 200,
The root system of the container seedling 204 is placed as a planting tree, and the growth base material 206 is sprayed to the vicinity of the seedling by a wet spraying machine so as to be self-supporting.

The second embodiment differs from the first embodiment in that the growth base material is sprayed to the extent that the seedlings are self-supporting in order to stabilize the seedlings, so that a narrow joint that makes it difficult to interpose (artificially) the root system of the seedlings. Can also respond.

(Embodiment 3) FIG. 3 is a schematic view showing that the planting work according to the present invention is used in combination with a thick base material spraying work to green the entire rock slope. A container seedling 304 is sandwiched or placed as a planting tree at the joint 302 of the bedrock 300 and fixed with a growth base material 306, and a thick spraying material 308 containing seeds and the like is applied to a bedside slope free of joints. Planting work is performed on the entire slope by spraying with a wood sprayer.

In the third embodiment in which a growth base is formed on the entire surface of the rock slope, the water retention of the base is improved, and the survival rate can be further increased. In the third embodiment, a thick spraying method is used. In particular, this method can be used in combination with a sowing method using woody plants other than herbs and planted trees. For example, a herbaceous vegetation can be created in a rock part without joints by a sowing method, and a woody plant can be established by using the present method only in a joint with a joint.

According to the planting method of the present invention in which a seedling is sandwiched in the joint, the stability of the seedling and the adhesion of the growth base are increased.
It is possible to apply a wire netting on a slope in advance, and then cut a wire net at a planting location and plant the tree. Planting using a wire mesh can cope with cases where the joints are narrow and the root system of the seedlings cannot be inserted.In this case, immediately after the sapling operator sets the seedlings so that the seedlings do not fall down after placing the seedlings It is important to spray the growth base material on the lands.

In this method, the root system of the seedling is directly sandwiched between the joints or the like, or the growth base material is sprayed immediately after the seedling is placed to the extent that the seedling is self-supporting. The feature is that it is not necessary to plant and can be planted with the root system exposed. Since the root system can be exposed and planted, it is possible to sandwich the root system even in a relatively narrow joint, and planting on a bedrock becomes easy. According to this method, since a bare seedling without a root mortar can be applied, the root mortar does not collapse even when the worker is stuffed in a waist bag or the like without care and the root mortar is unnecessary. The weight and volume per minute are greatly reduced, and the burden on workers is also reduced.

Further, even if a container seedling or the like causes root looping (excessive root winding phenomenon) in the root pot, the root pot is removed.
By dropping the pot soil, looping is eliminated, so that even a looping seedling can be used without any problem.

However, in the method of dropping the potting soil of the seedlings and exposing the root system for planting, the growth of the seedlings and the burden on the workers are improved as described above, but the root system is exposed. This may cause problems such as drying of the root system of the seedlings and loss of the growth function. However, as a method of preventing drying between the time when the root system is sandwiched in the joint and the time when the growth base material is sprayed, it can be dealt with by soaking the root system in water and then sandwiching it in the joint, or by using a water retention agent together. There is also a method of injecting a muddy base material after sandwiching a seedling in a joint to prevent drying.

In general, in order to save such labor as much as possible, the spraying worker himself carries the seedlings in his waist bag, or another worker carries the seedlings aside, and immediately before the spraying, the joints and the like are taken. It is desirable to set the root system in the cracks and spray the growth base material sequentially.

For the construction of the growth base in the present invention, a usual thick layer base material spraying work can be applied. In other words, it is suitable for the case where the seedling planting is used together as an auxiliary method of the thick layer base material spraying.
Preferably, it is desired to use a highly water-retentive organic material as a main material and use a cement as a bonding material to create a base having strong erosion resistance. By using cement as a joining material, it becomes possible to create a strong growth base suitable for fixing and holding planted trees as compared with a polymer resin or the like.

Although this method cannot be applied to a monolith without joints, it is also possible to artificially create a crack in a bedrock by dynamite and plant it.

It is generally known that a planted tree grown by a planting plant and a planted tree grown by a seeding plant are more desirable by the seeding plant in order to stabilize the growth of the plant and the slope. However, in the present invention, the same result as that obtained by sowing can be obtained while being a planter. Here, the case of sowing and the case of planting will be briefly compared. First, those that have germinated and grown by sowing are given priority to those that are compatible with the degree of soil hardness, rock cracks, moisture, and the amount of fertilizer, etc. Because the roots are lowered along the joints of the rocks and the rooting is complicated, the effect of binding the soil well is generated, and the underground part develops more than the above ground part, so there are less fallen trees and withering and less maintenance and management. And the effect of stabilizing the slope increases. On the other hand, when planting large-sized seedlings that have grown to some extent, there is little rooting, such as lack of water to supply or dry and die, the growth slows down and the survival rate decreases, and on steep slopes etc. It is conceivable that the seedlings may fall if they receive strong winds immediately after construction (before the root system elongates along the joints). However, the seedlings planted in the present invention are:
Since the seedlings are as young as possible and still in the growth stage of rooting, the same effects as those obtained by the seeding work can be obtained. Specifically, it is preferable to use small container seedlings (pot seedlings) and the like, and it is preferable to plant young seedlings with a low tree height as much as possible. Preferably, the seedlings are less than 30 cm, and the upper limit is about 50 cm. Become.

[0027]

Since the present invention is configured as described above, the following effects can be obtained.

The rock slope planting method according to the present invention, in which the plant is effectively planted in cracks such as joints where the plant can originally grow on the rock slope, excavates a planting hole in the rock slope, or provides a structure such as a fence. Unlike the conventional method of planting by planting, since construction for planting is not artificially performed, there is no danger of occurrence of secondary problems such as slope collapse and structural corrosion. Also, within the joints where plants can grow, the mortality of the seedlings is greatly reduced, the root system of the seedlings can grow naturally, the reinforcing effect of the bedrock itself is strengthened and the slope is stabilized, etc. Planting can be carried out more efficiently in terms of workability and safety. Furthermore, it has become possible to plant seedlings even on steep hard rock slopes where it was originally difficult to excavate planting holes and the like. For this reason, planting can be realized even in a bedrock where the planting conditions have been limited so far, and the construction range is further expanded.

Furthermore, since the planting is performed only in places where plants can grow, there is no danger of creating an unnatural landscape, and the formation of greening close to nature that matches the location conditions (slope conditions). Becomes possible.

Further, in the planting work according to the present method, the root system of the seedlings is dropped and planted in joints or the like in a state where the root system is exposed, so that the root system can be sandwiched in fine joints or the like. In the conventional method of planting with a root pot of the planted tree seedling, if the seedling with root system looping was planted as it was, the growth would be impaired, causing problems such as withering or lodging of the seedling. However, by dropping pot soil, looping is eliminated, so that looping seedlings can be used without any problem, and waste of seedlings can be reduced.

By dropping the potted soil of the planted seedlings, even in a steep place such as a slope, a bare seedling without root pots can be applied. In addition to reducing the need for protection of root mortars, the burden on workers is reduced, and planting on rock is more efficient in terms of workability and safety. , Easily realized.

When planting young, small container seedlings (potted seedlings) as in the present invention, since the seedlings are still in the growth stage of rooting, the rooting of the seedlings after planting is not sufficient. We can expect enough. For this reason, it is possible to expect almost the same effect as the growth state by the seeding work, and to further strengthen the stability of the bedrock slope, and to greatly reduce seedlings that cause poor germination.

In the method of planting in a rock joint according to the present invention, a herbaceous vegetation is formed on a rock surface having no joint by a sowing method, and a woody plant is established by using the present method only in a joint having a joint. It is possible to form greenery by combining various construction variations.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a configuration of a planting work in a rock slope according to the present invention.

FIG. 2 is a schematic view showing the configuration of another embodiment of the planting work on the rock slope according to the present invention.

FIG. 3 is a schematic diagram when the planting method according to the present invention is used together with a thick base material spraying method to green the entire rock slope.

[Description of sign]

 REFERENCE SIGNS LIST 100 bedrock 102 joint 104 container seedling 106 growth base material 200 bedrock 202 joint 204 container seedling 206 growth base material 300 bedrock 302 joint 304 container seedling 306 growth base material 308 thick spray base material

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 17/20

Claims (3)

(57) [Claims] 1. A tree height of 50 with potted soil dropped in a joint of rock mass
cm. A method for planting a rocky slope, wherein the seedling is fixed by spraying a growth base into the joint using a wet spraying machine from above a root system of a seedling of not more than 1 cm. 2. A tree height of 50 with potted soil dropped on a joint of a bedrock.
cm. A method of planting rock slopes, comprising placing a seedling having a diameter of not more than 1 cm and spraying a growth base on the joint using a wet spraying machine from above, thereby allowing the seedling to stand and fix itself. 3. The method according to claim 1, wherein a greening method by spraying a thick base material is applied to the entire surface of the rock.
Or the method for planting a rock slope described in 2.