JPS6145727B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is aimed at preserving the landscape and environment of rocky slopes with a low degree of weathering and few cracks, or to avoid unnecessary reflected sunlight. There are times when it is necessary to protect the slope by using a method of greening by spraying soil instead of spraying mortar. This invention relates to a construction method that allows a layer of soil for greening to be easily obtained on the slope.

Even if you try to green the slope by attaching a layer of soil on top of the rocky slope, there are few cracks or soft soil layer where the roots of the vegetation can easily penetrate, so the roots of the vegetation are Just like the roots of plants in flower pots, they simply overlap and intertwine on the slope, but do not penetrate into the ground and become established in the ground. No matter how thick the layer is, and no matter how much vegetation grows in that layer, the soil layer as a whole tends to peel off from the slope, making it difficult to create a stable soil layer for greening. There were many times when I couldn't say it. The present invention performs greening work on slopes that tend to peel off easily, and creates a net in which the roots of vegetation are naturally entwined and fixed prior to spraying soil on the slope. The present invention relates to a construction method that reliably obtains stable greening that is difficult to peel off on the slope by adding a simple work such as fixing it in a laid manner on the slope.

The present invention will be described below based on drawings showing embodiments thereof.

As shown in Fig. 1, a corrosion-resistant vegetation root fixing net 3 is placed on the entire surface of a slope 1, and a net holding device 6 placed on top of the net is pressed against the slope 1 with an anchor bolt 7. After fixing it to the surface 1 in a laid manner, the flanged anchor bolt 8 with a flanged part provided at the middle part of the shaft is driven into the slope surface 1 until the flanges come into close contact with the slope surface 1. When a layer of soil is formed on the slope 1 between the heads, a corrosion-resistant reinforcing material 5 for reinforcing the layered structure should work to strengthen the layer's resistance to bending stress, etc. While stretching the net, add greening soil mixed with an appropriate adhesive such as cement or synthetic resin as necessary onto the slope 1, and add the soil to the extent that vegetation will grow vigorously. The layer is thick enough to cover the reinforcement 5 for reinforcing the layer structure (for example, 5 to 20
cm thick) to form a greening soil layer 4 on the slope 1.

In the greening soil layer 4 formed in this way, the roots 10 of the vegetation 9 that germinate and grow are in the third layer.
As shown in the figure, the vegetation roots naturally cling to the network of the fixing net 3 and grow along the slope 1 or into the ground of the slope 1 and take root, so that the soil layer 4 Even if some force acts to separate the vegetation 9 from the slope 1, the roots 1 of the vegetation 9
0 to the vegetation root fixing net 3 resists it, and as long as the net 3 does not become corroded or otherwise abnormally fixed to the slope 1, the soil layer 4
will not peel off or fall off from the slope 1.

In this way, the roots 10 of the vegetation 9 are prevented from peeling off or falling off from the slope 1 and the adhesion of the soil layer 4 to the slope 1 is maintained. There will be more opportunities for the vegetation to take root deeper into the ground on the slope 1, and the ability of the vegetation 9 to settle on the slope 1 will naturally become more reliable.

In addition, as shown in FIG. 2, when fixing the vegetation root fixing net 3 to the slope surface 1 in a laid manner, the vegetation growth aid 2 such as slow-release fertilizer or soil conditioner is pressed down with the net 3. If it is attached to the surface 1, the growth of the vegetation 9 growing in the soil layer 4 will be further conveniently encouraged.

In addition, in the above-mentioned embodiment, the presence of the net as reinforcement material 5 for reinforcing the layered structure, which will be arranged near the surface of the soil layer 4, is due to the presence of the net body as the reinforcing material 5, which is placed near the surface of the soil layer 4.
In addition to being effective in increasing resistance such as anti-bending stress of Since the net is stretched between the heads of each bolt 8, the distance between the net and the slope 1 can be adjusted to the same length as the slope by simply aligning the distance between the collar and the head of each bolt 8 to the same length in advance. This makes it possible to maintain the same consistency over the entire surface regardless of the undulations of the slope, and this in turn makes the mesh a good target when spraying soil, making it possible to maintain uniformity over the entire surface of the slope. While it is easy to form the layer 4 with a constant thickness on the surface and homogenize the layer structure, the mesh can also be used as a suitable indicator to measure the thickness of the layer 4 after construction. This will also have the effect of making it easier. Also, as shown in Fig. 2, the reinforcing bars 5 for reinforcing the layered structure are made of double nets with appropriate wire diameters and meshes so that a person can stand on them and spray soil on them. Measures such as stretching the wall may also be taken as appropriate.

Since the vegetation root fixing net 3 according to the present invention plays an important role in fixing the thick soil layer 4 to the slope surface 1 for a long period of time, it is essential that it is corrosion resistant as mentioned above. Synthetic fiber nets, wire meshes, laths, etc. coated with corrosion-resistant substances are used, and the mesh size of these nets 3 is usually about 20 to 50 mm.

As described above, the construction method of the present invention allows stable afforestation to be carried out very easily on slopes such as bedrock where it is difficult for vegetation to take root and it is generally difficult to carry out afforestation work. Its effect on technological progress is remarkable.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a slope constructed using one embodiment of the construction method of the present invention, Fig. 2 is a longitudinal cross-sectional view of a slope constructed using another embodiment of the construction method of the present invention, and Fig. 3 is a vertical cross-sectional view of a slope constructed using the construction method of the present invention. FIG. 1 is a cross-sectional perspective view of the main part of the slope in FIG. 1...Slope, 2...Vegetation growth aid, 3...Root fixing net, 4...Additional soil layer for greening, 5...Reinforcing material for layered structure reinforcement, 6...Net holding tool, 7...Anchor bolt, 8
...anchor bolt with flange, 9...vegetation, 10...root.

Claims (1)

[Claims] 1 After fixing the corrosion-resistant vegetation root fixing net 3 to the slope 1 in a laid-down manner, the flanged anchor bolt 8 with a flange provided at the middle part of the shaft is attached to the slope 1 until the flange comes into close contact with the slope 1. At the same time, a corrosion-resistant net is stretched between the heads of the flanged anchor bolts 8 as reinforcement material 5 for reinforcing the layered structure. This slope greening construction method is characterized in that a greening soil layer 4 is formed by spraying thick enough to cover layered structure reinforcing bars 5.