JPH10110436A - Method and device for greening cut slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain greening of high quality by filling an outer covering net part with thick layer base concrete, and tightly laying and fixing a greening device planted with grass and tree on a cut slope. SOLUTION: An outer covering net part 11 formed in the form of a flat bag with steel wire and the like coated with vinyl chloride, polyethylene or the like and having an excellent flexibility is provided. The outer covering net part 11 is filled with thick layer base concrete 12 using proper material of site-produced soil such as black soil and compost. Next, grass 13 and tree 14 are planted on the thick layer base 12 concrete to form a greening device 1. The ground 21 is excavated to form a cut slope 22, wire net-contained mortar 23 is sprayed on the cut slope, and the prescribed number of greening devices 1 are tightly laid and fixed thereon. Roots of grass 13 and tree 14 are surely fixed and high quality greening can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revegetation method and a revegetation method for a cut slope, and more particularly, to a slope for civil engineering work such as open tunnels, tunnel entrances, and underpeening, and a slope for construction work such as root cutting. The present invention relates to a greening device and a greening method for the like.

[0002]

2. Description of the Related Art Construction methods for cut slopes are based on geology, weathering degree,
Although it depends on conditions such as the construction period, in general, the ground is first excavated to a predetermined height to form a slope, then a wire mesh is attached to this slope, and mortar is sprayed to form a lining. I do. Next, a plurality of holes are made in the ground from above the lining, and a reinforcing bar-shaped member is inserted, and the periphery of the bar-shaped member is reinforced with grout or the like. By repeating such a process, the cutting work was advanced from above the ground to below.

[0003] After the cut slope is formed, plants or trees are planted by a greening method. Conventionally, when planting herbs, relatively thin layers such as a seed spraying method in which seeds are mixed with fertilizer and water and sprayed on the lining, or a customer soil spraying method in which soil is added and sprayed. Was the mainstream. Also, soil, seeds, fertilizer,
A method of spraying a thick layer base material in which a material in which water, additives, and the like are mixed is sprayed on the lining with air has also been performed.

[0004] On the other hand, when planting a woody plant, the above-mentioned thick layer base material spraying method is used or a fiber-mixed earth and sand is sprayed as a base to increase the thickness of the layer necessary for root survival. On top of that, the seed spraying method and the soil spraying method were performed.

[0005]

However, in the conventional cutting slope revegetation method, after the cut slope is stabilized with reinforcing materials such as wire mesh, mortar spraying and rock bolts, the planting of a herbaceous or woody plant is performed. Since the planting is performed, there is a problem that the number of steps increases and the construction period becomes longer. Also, since it takes a considerably long time for the plants and trees to grow, the planting base material has collapsed due to wind and rain during that time, and the greening was sometimes incomplete.

[0006] An object of the present invention is to solve such problems, and it is possible to shorten the construction period and reduce the number of man-hours, and to secure the greening quality by reliably greening the cut slope. It is an object of the present invention to provide a revegetation device and a revegetation method for a cut slope that is possible.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a revegetation method and a revegetation method for a cut slope, and is constituted as follows in order to solve the above-mentioned technical problem. That is, the present invention is a greening device for greening the slope by excavating the ground to form a cut slope and planting a herb or a tree on the cut slope. Comprising a sheath net portion formed in a bag shape with a simple net-like member, and a thick base material filled in the sheath net portion, and planting the herb or wood on the thick base material. Features.

The present invention also relates to a greening method for greening the slope by excavating the ground to form a cut slope, and planting a herb or a tree on the cut slope. The above-described cut slope revegetation device is laid in close contact with the cut slope by deforming according to the unevenness of the cut slope.

In the apparatus for greening a cut slope according to the present invention, grass and wood are planted in advance on the thick base material in the jacket net portion. In addition, since it is possible to prevent the wood from being blown off, high-quality greening is possible.

[0010] In the method for greening a cut slope according to the present invention, greening can be performed only by laying and fixing the above-described greening device on the cut slope, so that it is possible to reduce the number of steps and the construction period. Furthermore, since the greening device is deformed according to the unevenness of the cut slope, the greening device is laid and fixed in close contact with the cut slope, so that the roots of the herbaceous or woody plants will surely take root. This enables high quality greening of the cut slope.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a revegetation method and a revegetation method for a cut slope according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a cutting slope revegetation apparatus 1 according to the present invention. The greening apparatus 1 includes a jacket net portion 11 and a thick base material 12 filled in the jacket net portion 11. Herbs 13 and wood 14 are planted on the thick base material 12.

The sheath net portion 11 has high tensile strength and excellent flexibility such as a steel wire covered with, for example, vinyl chloride or polyethylene, or a polymer material called geogrid such as polypropylene or polyethylene. It is formed in a flat rectangular bag shape by a wire having corrosion resistance or the like.

The size of the mesh of the jacket net portion 11 is
For example, a lock bolt 25 is used to fix the internal thick base material 12 to the cut slope without deviating, as described later.
(FIG. 3) and a size that can pass through the hole-in anchor 26 and the like. Then, as shown in FIG. 2, appropriate positions of the jacket net portion 11 are partially sewn up and down by a plurality of welding portions 16 in order to prevent the thick layer base material 12 from being biased. The thick base material 12
Appropriate materials, such as locally generated soil such as kuroboku and compost, can be used. The entire greening device 1 can be deformed into a wavy shape because the jacket net portion 11 has flexibility.

Next, a method of greening a cut slope using the above-described greening apparatus 1 will be described. In this greening method, first, a ground 21 is excavated to form a cut slope 22 as shown in FIG.
Spray 3 The cut slope 22 is formed by the mortar 23.
Are filled, and relatively large wavy irregularities are left on the surface of the mortar 23. The lock bolt 25 is inserted into a predetermined position of the mortar 23.

Next, the above-mentioned greening apparatus 1 is laid on a mortar 23. At this time, the greening device 1 is
The greening device 1 is laid in close contact with the mortar 23 by being deformed in accordance with the irregularities of. Next, the peripheral end of the greening device 1 is fixed with a lock bolt 25, and if necessary, a hole-in anchor 26 is cast and fixed. Similarly, the greening process is completed by laying and fixing a predetermined number of greening devices 1 on the mortar 23.

In the above embodiment, the cut slope 22 is used.
The mortar 23 was sprayed thereon, and the greening device 1 was laid and fixed thereon. However, when the cut slope 22 is stable, the greening device 1 is directly sprayed on the cut slope 22 without spraying the mortar 23. Can be laid and fixed.

The distance between the lock bolts 25 or the hole-in anchors 26 (only the lock bolts 25 are inserted) inserted on the cut slope 22 or the mortar 23 is changed to the greening device 1.
In this case, the ends of adjacent greening devices 1 and 1 can be overlapped and fixed with one lock bolt 25 as shown in FIG. In the case where a gap is formed between the adjacent greening devices 1 and 1 as shown in FIG. 5, the overhang members 27 are attached to the outer net portions 11 and 11 of both the greening devices 1 and 1. 27, and these projecting members 27, 27 can be fixed with one lock bolt 25. The gap between the greening devices 1 and 1 is completely filled by the growth of the herbs 13 and the trees 14 of the greening devices 1 and is completely greened.

As described above, the cut slope revegetation apparatus 1 according to the present invention fills the deformable jacket net portion 11 with the thick base material 12, and places the herbaceous material 13 on the thick base material 12. And Kimoto 1
Since the plant 4 is planted, even if the mortar 23 is sprayed on the cut slope 22, the plant can be easily planted simply by laying the planting device 1 on the mortar 23. Furthermore, since the thick base material 12 is filled in the bag-shaped outer net portion 11, even when the strong wind and rain is blown, the thick base material 12, the herbaceous plant 13 and the woody plant 14 are prevented from being blown off. As a result, the herbs 13 and the trees 14 can be grown normally and high-quality greening can be performed.

The revegetation method for the cut slope according to the present invention is a revegetation apparatus 1 in which a herb 13 and a tree 14 are planted.
Is simply laid and fixed on the cut slope 22 or the mortar 23, so that the number of steps and the period of work can be reduced. Furthermore, for example, when the cut slope 22 is unstable, mortar 23 is sprayed on the cut slope 22 to stabilize the cut slope 22 before the greening can be achieved. Even if concrete has already been constructed on the cut slope 22, the greening can be easily achieved by laying and fixing the greening device 1 on this concrete.

In the greening method of the cut slope, the cut slope 2
2 or greening device 1 according to the unevenness of the surface of mortar 23
, The planting apparatus 1 is laid and fixed in close contact with the cut slope 22 or the mortar 23.
3 and the roots of the tree 14 can be alive to achieve high quality greening.

In the above-described embodiment, the mesh of the jacket net portion 11 is made large enough that the thick base material 12 does not deviate and that the lock bolt 25 and the hole-in anchor 26 can pass therethrough. The size of the mesh can be made relatively large, and a nonwoven fabric (geotextile) such as polyethylene or polypropylene, or a net having a fine mesh can be used by overlapping it with the jacket net portion 11.

[0023]

As described above, according to the cut slope revegetation apparatus of the present invention, grass and trees are planted in advance on the thick base material in the jacket net portion. Can prevent the thick base material, the herbaceous plants and the woody plants from being blown off, thereby enabling high-quality greening.

Further, according to the method for greening a cut slope according to the present invention, greening can be performed only by laying and fixing the above-mentioned greening device on the cut slope, so that the number of man-hours and the construction period can be reduced. . Furthermore, since the greening device is deformed according to the unevenness of the cut slope, the greening device is laid and fixed in close contact with the cut slope, so that the roots of the herbaceous or woody plants will surely take root. This enables high quality greening of the cut slope.

[Brief description of the drawings]

FIG. 1 is a sectional view of a greening device for a cut slope according to the present invention.

FIG. 2 is a plan view showing an attachment part of the greening device for a cut slope according to the present invention.

FIG. 3 is a cross-sectional view illustrating a greening method for a cut slope according to the present invention.

FIG. 4 is a cross-sectional view showing a state in which the ends of the greening apparatus are overlapped in the greening method for the cut slope according to the present invention.

FIG. 5 is a cross-sectional view showing a state in which a gap is generated between the greening devices in the greening method of the cut slope according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Greening device of cut slope 11 Net net part 12 Thick base material 13 Herb 14 Kimoto 21 Ground mountain 22 Cut slope 25 Rock bolt 26 Hole-in anchor

Claims (2)

[Claims] 1. A greening apparatus for greening a slope by excavating a ground to form a cut slope, and planting a herb or a tree on the cut slope. It is characterized by comprising a jacket net portion formed in a bag shape with a net-like member, and a thick base material filled in the jacket net portion, wherein the herb or wood is planted on the thick base material. Greening equipment for cut slopes. 2. A greening method for greening a slope by excavating a ground to form a cut slope and planting a herb or a tree on the cut slope. A greening method for a cut slope, characterized in that the cut slope greening apparatus according to (1) is deformed in accordance with the unevenness of the cut slope to be laid in close contact with the cut slope.