JPH0315630Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (a) Industrial application field This invention is intended to provide a protective frame for sloped soil with a new configuration.

B. Conventional technology and its problems Conventionally, this type of technology has been as follows.

Conventionally, various methods have been used to preserve soil for slope greening, but the natural conditions at the construction site always change significantly, and what may be appropriate in one location may be inappropriate in another. It is often appropriate.

However, it can be said that the fundamental problem lies in how the soil on the slope, which is the basis of vegetation, can be preserved in a stable state on the slope.

However, in many places where greening is being attempted, the growing environment is poor, and the growing conditions for plants have been destroyed by rock, gravel layers, collapse due to disasters, or artificial excavation, resulting in no fertilizer or water.

Therefore, it is necessary to artificially create a vegetation base at these construction sites by adding fertile soil or by mixing various fertilizers and other necessary substances into the soil and spraying them. However, the success or failure of greening is determined by how these base soils are placed on slopes and maintained.

B. Structure of the invention A. Problem to be solved In order to achieve the above purpose, the invention is as follows.

In other words, the present invention is a slope surface in which three bone wires are arranged in parallel in the longitudinal direction at equal intervals inside a spirally wound corrosion-resistant steel wire, and a belt-shaped corrosion-resistant filter is inserted. It is a protective frame for the land.

In this case, three bone wires can be arranged in parallel in the longitudinal direction at equal intervals, leaving both ends of the corrosion-resistant steel wire.

(b) Examples of implementation of the idea Examples will be described with reference to the drawings.

1 is the protection framework for the slope land in the main case.

2 is a corrosion-resistant steel wire that has been subjected to corrosion-resistant treatment such as aluminum coating and is spirally wound; 3 is a spirally wound corrosion-resistant steel wire that is wound in an equilateral triangular shape with both ends 2A of the steel wire 2 left in the steel wire; The bone lines are placed and fixed by welding at each intersection.

Reference numeral 9 denotes a corrosion-resistant filter having a width approximately matching the inner diameter of the steel wire 2, and is inserted into the steel wire 2.

The filter 9 may be rotatably inserted into the steel wire, or may be tied to the steel wire or bone wire at a predetermined angle with a string or wire.

4 is an anchor pin that fixes the protection frame to the slope, 5
8 indicates the soil filled in the protective frame, and 8 indicates the leveled slope.

C Effect Explain along with the effects.

C. Effects of the invention Since the present invention is configured as described above, it produces the following effects.

b) The shape of the protective frame is mechanically rational and highly stable against external forces.

The total area to be greened on the slope should be divided at appropriate intervals (1
The entire frame is divided into rectangular sections with 1.5 m to 1.5 m on each side, as shown in Figure 3, and the entire frame is made up of solidly continuous and integrated parts. It is mixed with different seeds and added to the soil.

In the case where the above-mentioned both end portions 2A are formed, as shown in Fig. 9, it can be twisted and connected to the side body portion or end portion of another member while being twisted, and deployed on a slope as a designed rectangular protection frame. become.

In addition, the intersections of these protective frames are typically fixed firmly to the leveled slope base using anchor pins with a diameter of 16 mm.

This protective frame is extended in contact with the slope foundation and buried in the soil.

In addition, the inside of this spiral protective frame has a thickness of 10 mm ~
A filter of approximately 20 mm is attached to the bone line to prevent soil on the slope from flowing downward, allowing only seepage water to flow to the lower part of the slope.

The overall picture of this protective frame is as above, but the difference from other frame materials is that it is three-dimensional compared to other frame materials that are generally flat (steel materials, steel plates, plate materials, expanded metal, etc.). At the same time, it is open, and the vegetation and soil surrounded by a protective frame are not separated or independent, but are formed as an integral part of the ground.

In addition, although it has a three-dimensional structure, its shape is formed by spirals and straight lines, and the external force applied to the frame (the force of earth and sand sliding down the slope) is dispersed rationally rather than concentrated, and it is spread out on the slope. The integrated frame as a whole resists external forces and is not only able to protect the soil layer in an extremely stable manner, but also prevents soil particles from penetrating water during rainfall through filters set inside the member. Only water can be washed away without water being washed away.

(b) It is easy to assemble the protective frame on a slope.

By rotating the helical end of the member and inserting it into another side body or end, it is possible to join other members into a T-shape or straight shape, if necessary, to form a diagonal line, and it is lightweight. It is very easy to transport and handle on slopes, saving overhead and labor.
In addition, the construction period is shortened, making it highly economical.

C. It is easy to collect soil and adjust the layer thickness.

Due to the characteristics of the protective frame member of the present invention, the joints between the members are extremely strong, and the intersection points are fixed to the slope with anchor pins, so the soil to be poured in is poured from above. This allows for easy access by customers, minimal deformation of the protective frame at that time, easy adjustment of the amount of soil and layer thickness, and tamping. Since each block is an independent space, the compaction weight loss over time is significant and often requires correction or modification at a later date, but this is less the case with the device of the present invention.

D. Continuous vegetation on the slope is possible due to the integrity of the slope soil.

Due to the characteristics of the material, when soil is introduced into the slope using the device of the present invention, it is sufficiently filled to the inside of the frame, so as the greening plants grow, their root hairs enter into the adjacent frame and coexist. Since it is not partitioned like other things, the entire slope is covered with a network of plant root hairs, and the soil particles are tightly gripped by these root hairs, and the branches and leaves cover the surface without any breaks.
Together with the stability of the soil provided by the protective frame, it is possible to prevent the impact of raindrops and prevent infiltrated rainwater from flowing downward due to softening of the soil.In addition, the continuous vegetation creates a large landscape. .

E. The material of the parts has excellent corrosion resistance, so it has long durability.

The steel wire, which is the material that makes up this protective frame, is coated with aluminum, so its corrosion resistance in the soil has been recognized through many years of testing and numerous achievements. The filter to prevent water from being washed away is also made of synthetic chemical fiber, so it will not rot permanently. The durability of factory-produced protective frames made of these materials is also permanent.

The slope soil protection frame of the present invention having the above-mentioned features is different from conventional ones and is extremely excellent as a protection material for slope soil as a vegetation base.

According to the experiment, the slope angle is 40°, the slope length is 10 m, the soil type is volcanic ash (clay ratio 2.12), and the rainfall is 108 mm/day.
mm/hour, surface runoff approximately 8 at earth pressure 10 cm
mm, the erosion rate was 8%, and there was almost no effect below that, and no distortion or displacement of the frame was observed.Erosion was limited to the 2cm surface layer of soil that covered the frame, and subsequent observations showed that It was found that the soil was washed away only on the surface layer and did not extend to the bottom of the frame, so we believe that the soil on the slope was sufficiently protected and had a great effect.

[Brief explanation of the drawing]

Fig. 1 is a front view with one part omitted, Fig. 2 is a vertical sectional view of the same as above, Fig. 3 is a schematic front view of the installed state,
Figure 4 is an enlarged view of the main parts of the same as above, Figure 5 is a front view showing another embodiment in the installed state, Figure 6 is a longitudinal sectional view of the installed state, and Figures 7 and 8 are the main parts of the same as above. The enlarged view and FIG. 9 are plan views illustrating the connected state. 1... Protective frame for slope soil, 2... Steel wire, 3...
Bone line, 9...filter.

Claims (1)

[Claims for Utility Model Registration] 1. Three bone wires are arranged in parallel in the longitudinal direction at equal intervals inside a spirally wound corrosion-resistant steel wire, and a belt-shaped corrosion-resistant filter is inserted. A protective frame for sloped soil that is characterized by: 2. The slope soil protection frame according to claim 1, wherein the ribs are arranged parallel to the longitudinal direction at equal intervals, leaving both ends of the corrosion-resistant steel wire.