JP2001032283A - Greening construction method for slope face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a process by inserting comb type net bodies each having an earth retaining part constructed of a rectangular net body part and a comb type inserting part extending from the lower end of the earth retaining part at proper intervals after spraying a vegetation bed onto a slope face covered by a net body and maintaining the vegetation bed by means of the earth retaining part in the comb type net body. SOLUTION: A plane type net body 2 constructed of a metallic net and the like is spread from a slope top 11 to a slope toe 12 of a slope face 1 and fixed in proper positions by means of anchors 9. A vegetation bed material 3 is sprayed onto the slope face 1 so as to cover the net body 2, and from the upper side of the vegetation bed material 3, comb type net bodies 4 are inserted vertically at proper intervals. After installing the comb type net bodies 4, when the vegetation bed material 3 is evened along an earth retaining part 41, the vegetation bed material 3 is formed in a step shape. As a foothold is formed, planting work can be facilitated, and moreover, vegetation is promoted because fallen leaves and seeds are accumulated. In this way, a vegetation bed material can be fixed to a slope face by means of a very simple construction method such as insertion of the comb net body alone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for greening a slope, in which a vegetation base is fixed on the slope and vegetation is established.

[0002]

2. Description of the Related Art Conventionally, as a method of greening a slope, for example, as disclosed in Japanese Patent Application No. 3-360941, a front face is fine and an upper face is narrowed on a slope where a net is stretched. A method has been proposed in which an L-shaped wire mesh formed by a coarse wire mesh is arranged in a step-like manner, and the L-shaped wire mesh is attached to a net body and fixed to form a vegetation base in a step-like manner.

In Japanese Patent Laid-Open Publication No. Hei 5-163731, a reinforcing bar is disposed laterally on a slope and fixed with a plurality of anchors, and an L-shaped pocket formed of a plurality of vertical members and a horizontal member is provided therein. There has been proposed a method of attaching a body to form a pocket for holding a vegetation base material.

[0004]

However, in the case of the former method, since it is necessary to form hooks for fixing to the net laid on the slope in the L-shaped wire net, it is extremely time-consuming to manufacture. Costly and expensive. In addition, the work of attaching the L-shaped wire netting to the net was also troublesome.

[0005] In addition, depending on the type of wood, the mesh on the upper surface of the L-shaped wire mesh may hinder the growth of the trunk.

[0006] Further, in the case of the latter construction method, in particular, the construction method is often carried out on a slope having irregular and severe irregularities, so that an extremely large number of anchors for fixing the reinforcing steel are required, which is not economical. , Installation of rebar was troublesome.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a soil retaining portion formed of a rectangular net and a comb-like tooth extending to the lower end thereof after spraying a vegetation base on a slope having a net stretched. The comb-shaped net having the insertion portions of the above-mentioned is inserted at appropriate intervals, and the vegetation base material is held by the retaining portions of the comb-shaped net.

According to the present invention, the vegetation base material can be held by a simple process of merely inserting a comb-shaped net, and the vegetation base is formed in a step shape, so that the vegetation is stabilized and the fallen leaves And the like can be deposited, and a circulation close to a natural state can be realized.

If the insertion portion of the comb net is formed by extending the vertical member of the rectangular net forming the earth retaining portion, the structure of the comb net is extremely simple. It becomes something.

Further, if a retaining sheet is attached to the back of the retaining portion of the comb net, the vegetation base material can be prevented from running off and held even during rainfall.

Further, if a heat insulating sheet is attached to the back surface of the retaining portion of the comb net, the vegetation base material can be protected from drying, freezing and the like.

If the resin coating layer is formed on the surface of the insertion portion of the comb net, the insertion portion is prevented from being worn out due to friction with the net stretched on the slope, and the like. The durability of the comb net can be improved.

[0013] Further, the comb-shaped mesh body is formed with a lateral soil retaining portion formed of a plurality of cross members extending from the left and right ends of the retaining portion to the rear surface, and a net body is formed at an upper end of the lateral retaining portion. If the locking portion for locking the vegetation base material is provided, the vegetation base material is prevented from flowing off in the lateral direction, and the holding ability is further increased.

[0014] Furthermore, a horizontal frame having a plurality of vertical members extending in the direction of the back and extending the vertical member of the rectangular net forming the earth retaining portion at the upper end of the earth retaining portion of the comb-shaped net is provided. If provided, it can withstand a load from the side of a person or a base material.

[0015]

Embodiments of the present invention will be described with reference to the drawings.

First, as shown in FIG. 1 (A), a flat net 2 made of a wire mesh or the like is stretched from the shoulder 11 of the slope 1 to the bottom 12 of the slope 1, and the position is appropriately fixed with the anchor 9. . As the anchor 9, an L-shaped pin made of a metal such as round steel or stainless steel is usually used, but a glass fiber may be used in consideration of corrosion resistance.

Next, as shown in FIG. 1B, a vegetation base material 3 is sprayed on the slope 1 so as to cover the net 2. As the vegetation base material 3, park compost is mainly used. However, it is preferable to use soil generated at the construction site of the slope 1, such as mountain sand, in order to regenerate a natural state close to the original state.

Then, as shown in FIG. 1C, the comb nets 4 are inserted vertically from the vegetation base material 3 at appropriate intervals. As shown in FIG. 2, the comb net 4 includes a plurality of vertical members 4.
a and a cross member 4b formed of a plurality of vertical members 4a extending from the lower end thereof, and a comb-shaped insertion portion 42 formed of a plurality of vertical members 4a. The insertion portion 42 is pushed in until it is bent along the slope 1 by an appropriate length, and is attached. At this time, when the comb-shaped net 4 is difficult to be fixed and is unstable, the fixing may be performed using the stopper member 7 that connects the net 2 and the comb-shaped net 4.

As shown in FIG. 3, a heat insulating sheet 5 and a retaining sheet 6 are attached to the back surface of the retaining section 41 of the comb-shaped net 4, and a vertical member forming the insertion section 42. A resin coating layer 40 is formed at the tip of 4 a to prevent abrasion due to contact with the net 2.

The material of the comb net 4 is not only metal such as round steel or stainless steel, but also hard synthetic resin having high corrosion resistance.

After the comb net 4 is attached, the vegetation base material 3
Is spread along the earth retaining portion 41, and as shown in FIG. 1D, the vegetation base material 3 is formed in a step shape. Therefore, planting work is facilitated due to the formation of a scaffold, and fallen leaves, seeds, and the like are retained, and vegetation is facilitated.

After the comb net 4 is attached, the vegetation base material 3 in which fibrous material such as park compost is mixed into the sludge-like soil may be poured from the shoulder 11 to the bottom 12. May be constructed with

FIG. 4 shows a different form of the comb net used in the present invention. A plurality of cross members 8b extending from the left and right ends of a rectangular earth retaining portion 81 are formed on the back surface of the earth retaining portion 81. The side earth retaining portion 83 is formed by being bent substantially vertically in the direction, and the upper end of the side earth retaining portion 83 has a locking portion 8.
4 are provided. The comb net 8 is also attached by being vertically inserted into the slope 1 on which the vegetation base 3 has been sprayed, similarly to the comb net 4 shown in FIG. Further, by locking the locking portions 84 at both ends to the net 2, the comb net 8 can be firmly fixed without being shaken, and the lateral soil retaining portion 83 allows the lateral vegetation base material to be fixed. 3 can be prevented.

FIG. 5 shows a further different form of the comb net used in the present invention. The soil net 41 or 8 is attached to the upper end of the earth net 41 or 81 of the comb net 4 or 8.
1 is provided with a horizontal frame 45 or 85 having a plurality of vertical members extending from the vertical members 4a or 8a of the rectangular mesh body forming the first member and extending in the direction of the back surface,
In the embodiment of the present invention, it can withstand a load from the side of a person or a base material.

[0025]

According to the present invention, a vegetation base material can be fixed on a slope by an extremely simple construction method of simply inserting a comb net. Further, since the insertion portion is bent along the slope, it can be adapted to the shape of the slope having arbitrary irregularities.

Moreover, since the vegetation base material is formed in steps, a scaffold for planting and the like can be secured, construction can be performed safely and easily, and fallen leaves and seeds are easily deposited.
Since nutrients can be naturally supplied, vegetation can be easily achieved. Moreover, since the upper part of the vegetation base material formed in a step shape is open, even if the trunk of a woody tree becomes thick, growth is not hindered.

In particular, the comb net used in the present invention has a simple structure and is easy and economical to manufacture.

Further, by attaching a retaining sheet to the back surface of the comb-shaped mesh body, it is possible to prevent the vegetation base material from flowing out even during rainfall and the like, and a stronger retaining effect can be expected. As the earth retaining sheet, a Russell net made of resin fibers or a sheet made of coconut fibers may be used.

Further, by attaching a heat insulating sheet to the back surface of the comb net, it is possible to prevent and protect the vegetation base material from drying or freezing. In addition, a foamable polyethylene sheet or the like is used as the heat insulating sheet, but it is preferable to use a sheet obtained by hardening decayed fallen leaves and the like with an adhesive material.

By forming a resin coating layer on the surface of the insertion portion, it is possible to prevent abrasion when it comes into contact with a net laid on the slope, and to reduce the durability of the comb net. Can be improved.

Further, by providing the comb-shaped mesh body with the side earth retaining portion and the locking portion, the comb-shaped mesh body can be more firmly fixed, and furthermore, the vegetation base can be prevented from running off in the lateral direction, and the soil retaining function can be prevented. Will be higher.

In addition, a horizontal frame having a plurality of vertical members extending in the direction of the back surface is formed by extending the vertical members of the rectangular net forming the earth retaining portions at the upper ends of the earth retaining portions of the comb net. If provided, it can withstand a load from the side of a person or a base material.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a comb net used in the present invention.

FIG. 3 is a vertical sectional view of different comb nets used in the present invention.

FIG. 4 is a perspective view of a different comb net used in the present invention.

FIG. 5 is a perspective view of a different comb net used in the present invention.

[Explanation of symbols]

1 slope, 2 nets, 3 vegetation base materials, 4,8 comb nets, 4a, 8a vertical materials, 4b, 8b horizontal materials, 5 heat insulation sheets, 6 earth retaining sheets, 9 anchors, 40 resin coating layers, 41 , 81 earth retaining part, 42,82 insertion part, 83
Side soil retaining part, 84 locking part, 45, 85 horizontal frame

Claims (7)

[Claims] 1. A comb-shaped net having a soil retaining portion formed of a rectangular net and a comb-shaped insertion portion extending to a lower end thereof after spraying a vegetation base on a slope having a net stretched. Characterized in that the vegetation base material is held by the earth retaining portion of the comb-shaped mesh body at appropriate intervals. 2. The slope of claim 1, wherein the insertion portion of the comb net is formed by extending a vertical member of a rectangular net forming the earth retaining portion downward. Greening method. 3. The slope greening method according to claim 1, wherein an earth retaining sheet is attached to a back surface of the earth retaining portion of the comb net. 4. The method for greening a slope according to claim 1, wherein a heat insulating sheet is attached to a back surface of the earth retaining portion of the comb net. 5. The method according to claim 1, wherein a resin coating layer is formed on a surface of the insertion portion of the comb-shaped net. 6. A side earth retaining portion formed of a plurality of cross members which bends from both right and left ends of the earth retaining portion to the rear surface direction and is formed on the comb-shaped mesh body, and an upper end of the lateral earth retaining portion is provided. 6. The method for greening a slope according to claim 1, further comprising a locking portion for locking to the net. 7. A horizontal frame body is formed at the upper end of the earth retaining portion of the comb-like net by bending and extending a vertical member of a rectangular net forming the earth retaining portion toward the back surface to form a vertical frame. 7. The method for greening a slope according to claim 1, 2, 3, 4, 5, or 6.