JPH022761Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial field of application) This invention is used when laying soil on steep slopes, rock slopes, etc. formed by roads, mountain conservation, and housing land development work. The present invention relates to protection equipment for the newly laid soil, and is used in the field of manufacturing technology industry for this type of facilities.

(Prior art and its problems) When laying soil on a slope, conventionally, a wire mesh was first stretched on the slope, and then soil was sprayed into the thickness (gap) of this wire mesh. Therefore, the sprayed soil is laid on the slope through a wire mesh.

However, when using the above-mentioned wire mesh with a normal thickness, there was a problem in that it was not possible to lay a layer of soil of the required thickness on the slope, and when forming the wire mesh to the required thickness, there was a problem that Although it becomes possible to lay a layer of soil, there is a serious problem in that the laid soil is easily washed away by rain or the like or may slide down.

(Purpose of the present invention) The present invention lays a layer of soil with a required thickness on a slope, reliably prevents the laid soil from sliding down, and also promotes the growth of grasses growing on the soil. The purpose of this invention is to provide protective equipment for soil that can be laid.

(Structure of the present invention) The protector for laying additional soil according to the present invention includes a net for retaining soil that is formed to be slightly thick with a gap of a required thickness, and a net that is inserted into a required position of the net through the gap. It consists of an elongated soil slipping prevention member, and the soil slipping prevention member is made of highly water-absorbent material that can swell with water content.
It is characterized in that it is made of a highly water-retentive material and that at least a portion filled with grass seeds is formed.

(Example) Hereinafter, the present invention will be explained based on examples.

Figures 1 to 3 show a soil retaining net 1 formed slightly thick with a gap 2 of a required thickness, and a long-shaped net 1 inserted into an arbitrary gap 2' that communicates with the net in the lateral direction. This figure shows a protection device 4 for the soil, which is made up of a soil slip prevention member 3. The net 1 may be a wire mesh or, for example, a synthetic resin corrugated plate with many holes (not shown); however, the net 1 may be stretched over the slope 5. When provided, it is only necessary to provide a space 2' that communicates in the lateral direction. Further, it is preferable that the soil slipping prevention member 3 is inserted into a required plurality of gaps 2' provided at positions that maintain a required vertical gap corresponding to the length of the slope 5. Further, the prevention member is made of a highly water-absorbing/high-water retaining material, for example, a material in which a highly water-absorbing polymer whose main component is a vinyl alcohol/acrylic acid copolymer is mixed into an elastic material such as a synthetic resin or rubber, or It is made of other suitable materials with high water absorption and high water retention properties, and can absorb and swell in a short period of time. It has the possibility of repeating swelling and drying, which means that it returns to its original shape and swells again due to water absorption.

Further, as shown in FIG. 4, the soil slipping prevention member 3 is provided with a filling part 7 filled with at least grass seeds 6.
It may be a number of recesses ₇₁ of a required depth arranged on the surface of the member 3 as shown in FIG. In _addition , for the purpose of facilitating the germination of seeds 6 and vegetation,
As shown in D, a structure may be employed in which a hole or groove 7 ₃ formed on the surface of the member 3 and the hollow portion 7 ₂ are formed in communication with each other.

In addition, it is preferable to mix and fill the filling part 7 with the seeds 6 and a greening base 8 such as a chemical fertilizer or bark manure to promote their growth. Also,
The above-mentioned soil slipping prevention member 3 swells as shown by the chain line in FIG. 4 due to water content, but in order to increase the water absorbing and water-retaining properties of the member 3, the above-mentioned filling part 7 is filled with the above-mentioned material. A highly water-absorbing and highly water-retaining material formed into powder may be filled together with the seeds 6, the greening base material 8, and the like.

Slope 5 using the protective equipment of the present invention having the above configuration.
When laying additional soil in the
As shown in the figure, main anchors 9 are fixed at multiple locations on the slope 5, and then the net 1 is stretched over the slope 5 via the anchors. In order to make the installation more secure, for example, a wire rope is strung lengthwise and horizontally around the anchor 9 and the net 1 is placed on the rope, and the rope and the net 1 are connected with a coil or the like. In order to prevent the net 1 from lifting up, etc., the entire net 1 may be brought into close contact with the slope 5 by pressing a plurality of required locations of the net against the slope 5 using pin anchors or the like.

Next, the slip-off prevention members 3...3 of the soil inserted into the net 1 are swollen with water, and this swelling is achieved by spraying soil mixed with at least grass seeds 6' onto the stretched net 1. If this is done beforehand, or if the swelling is caused by moisture contained in the soil, the spraying of the soil and the swelling of the member 3 with water can be carried out at the same time.

In short, when soil is sprayed onto the net 1 stretched over the slope 5, the soil 10 will fill the gaps 2, 2' and other spaces in the net, as shown in Figure 6. However, in addition to the function of preventing the net 1 itself from slipping (retaining the soil), the applied soil 10 is swollen with water in the void 2' of the net in advance or at the same time as the soil is sprayed. The soil can be laid in a stable state on the slope 5 due to the large and reliable function of preventing the soil from falling off by the soil slipping prevention member 3'.

In addition, even if a part of the surface layer of the layered soil 10 is slightly washed away by rain or other running water, the layered soil 10 can be prevented by the layered soil from falling due to the prevention function of the layered soil slipping prevention members 3'...3'. It is possible to reliably prevent a large amount of the soil 10 from sliding down, and therefore, the additional soil 10 itself can retain the moisture necessary for the growth of the seeds 6, 6', and the additional soil 10 can be naturally When it is dry, the above-mentioned soil slipping prevention member 3'...
3' can be released into the subsoil 10, and furthermore, since the naturally dried prevention members 3...3 swell due to water content again during rain, etc., it has a water retention function and the subsoil 10. The anti-slip function of 10 is not impaired.

Furthermore, since the filling portion 7 of the soil slipping prevention member 3 can be filled with seeds 6, etc., the member 3
Since it is possible to promote the vegetation of grasses from the part of the net 1 through which the net 1 is inserted, the entire surface of the slope 5 can be naturally greened.

(Operations and effects of the present invention) According to the configuration of the present invention, it is possible to stably lay the required thickness of soil on the slope, and the soil that has been laid can contain a large amount of moisture due to rainfall, etc. Even in such cases, it is possible to reliably prevent it from slipping down.

In particular, the protective equipment of the present invention has a structure in which a soil slip prevention member made of a highly water-absorbing and highly water-retaining material is inserted into the gap that communicates with the net in the horizontal direction. By laying additional soil on the slope, you can prevent rocks from falling due to weathering of the slope and promote grass vegetation to make the slope naturally green. Moreover, by stretching the net on the slope, it is possible to completely achieve the intended purpose of suppressing floating rocks on the slope and preventing rockfall.

Furthermore, in the protective equipment of the present invention, since the soil slipping prevention member is provided with a filling part for seeds, etc., the moisture swelling of the prevention member promotes the germination and vegetation of the seeds filled in the filling part. Therefore, it has excellent effects such as being able to naturally green the entire surface of the slope together with other seeds mixed in the soil.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view of the protection equipment for the soil, Fig. 2 is a partially omitted side view showing the protection equipment stretched on a slope, and Fig. 3 is an enlarged front view of the main part of the protective equipment, FIG. 4A is a longitudinal cross-sectional view of the soil slipping prevention member, and FIGS. B to D are longitudinal cross-sectional views showing other embodiments of the member. It is. FIGS. 5 and 6 are explanatory diagrams for using the protective equipment of the present invention. 1... net for retaining soil, 2, 2'... void, 3,
3'...Soil slipping prevention member, 5...Slope, 6, 6'...Seed, 7...Filling part.

Claims (1)

[Scope of utility model registration request] It consists of a net for retaining soil that is slightly thick with a gap of a required thickness, and an elongated soil slip-preventing member that is inserted through the gap into a desired position of the net to prevent the soil from sliding. A protective device for laying soil on a slope, characterized in that the member is made of a highly water-absorbing and highly water-retaining material that can swell with water, and at least has a filling portion filled with grass seeds.