JPH07127068A - Arrangement method for net material - Google Patents

Abstract

PURPOSE:To improve workability by laying down band shaped net materials on slopes with their both edges overlapped, arranging reinforcements along the overlapped part, and spraying consolidating material on it until the reinforcements disappear to form vertical frames. CONSTITUTION:A band-shaped metal net 1 is laid down on slopes in order, and both edges of the adjacent metal net 1 are overlapped with each other to form an overlapped part, 2. Next reinforcements 3 such as steel reinforcements, wire ropes, etc., are put on the overlapped part 2, and anchors 4 are driven to fix them temporarily. Also consolidating material such as mortar, etc., is sprayed on the overlapped part 2 until the reinforcements 3 disappear to penetrate the overlapped part 2, and vertical frames 5 of angle section are formed along the overlapped part 2. Then greening base material 6 is sprayed until the exposed metal net 1 disappears. Thus net material joints can be connected firmly, greening base material can be supported stably for long time, stone dropping, etc., can be suppressed for long time in case of lock net, and also work can be made easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for stabilizing slopes, and more particularly to a method for laying a net material used as a reinforcing net or a rockfall net (rock net) for spraying greening base materials.

[0002]

2. Description of the Related Art As a construction method for preventing the surface layer of a slope from collapsing, fixed pin-shaped wire nets are laid along the up and down direction of the slope while anchoring and fixing anchor pins, and then greening is performed until the wire nets are hidden. A slope protection method is known in which a base material (seed, soil containing fertilizer, etc.) is sprayed to green the entire surface.

[0003]

[Problems to be Solved by the Invention] In the above-mentioned construction method, the laid wire mesh functions to prevent the greening base material from flowing down. However, since the seam of the wire mesh is systematically divided, if the earth pressure is concentrated at the seam of the wire mesh, the wire mesh will not be able to withstand the earth pressure, and the wire mesh will peel off. It is easy to occur.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to make it possible to effectively and firmly connect the joints of net materials with a simple construction. It is to provide a method of laying wood.

[0005]

The present invention is a method for laying a net material in which both edges of a belt-like net material are laid on a slope surface in a laying method, and reinforcing bars are arranged along the overlapped portion of the net material. Then, next, a solidifying material is sprayed until the reinforcing bars are hidden in the overlapping portion of the net material to construct a continuous vertical frame, which is a method for laying the net material.

An embodiment of the present invention will be described below with reference to the drawings.

<A> Laying process of wire mesh FIG. 1 shows a plan view of the slope, the upper part of the drawing shows the upstream side of the slope, and the upper part of the drawing shows the downstream side of the slope. First, the strip-shaped wire mesh 1 is sequentially laid along the longitudinal direction of the slope. At this time, as shown in an enlarged view in FIG. 2, both edges of the adjacent wire nets 1 and 1 are overlapped with each other to form the overlapping portion 2. still,
When laying the wire net 1, using the same various spacer members as the conventional one, laying the wire net 1 at a predetermined distance from the slope or laying anchors at a predetermined interval Then, fixing the wire net 1 is the same as the conventional one.
The wire netting 1 includes a known net material such as a baking coating wire netting, a resin-coated wire netting, and a flexible netting.

<B> Arrangement of Reinforcing Bars Next, after the reinforcing bars 3 such as reinforcing bars and wire ropes are placed on the overlapping portions 2 of the wire nets 1 and 1, the anchors 4 are driven in to temporarily fix the wire nets 1 and the reinforcing bars 3. To do. The reinforcing bar 3 is a member that functions as a reinforcing member for a vertical frame, which will be described later, and is preferably arranged continuously over the entire length of the overlapping portion 2.

<C> Construction of Vertical Frame Next, as shown in FIG. 3, a solidifying material such as mortar is sprayed on the overlapping portion 2 of the wire mesh 1 formed in the vertical direction until the reinforcing bar 3 is hidden. The sprayed solidifying material permeates the overlapping portions 2 of the wire nets 1 and 1, and a vertical frame 5 having a chevron cross section is continuously formed along the overlapping portions 2 of the wire nets 1 and 1 as shown in the drawing.

<D> Spraying of greening base material Once the vertical frame 5 has been constructed, the wire mesh 1 exposed as shown in FIG.
Various publicly known greening base materials 6 are sprayed to a predetermined thickness until the surface is hidden, and the construction is completed. Incidentally, prior to the spraying of the greening base material 6, a horizontal frame (not shown) orthogonal to the vertical frame 5 by a known construction method.
May be built.

<E> Strength of the seam of the wire netting The weight of the greening base material 6 acts on the entire wire netting 1. The area excluding both edges of each wire net 1 is supported by the strength of the wire net 1 and the collapse of the surface layer is restrained. The vertical frame 5 supports the own weight of the greening base material 6 that acts on the joints of the wire nets 1, 1. Further, the vertical frame 5 not only prevents separation of the seam portions of the wire nets 1 and 1, but also disperses the self-weight of the greening base material 6 acting on the seam portions of the wire nets 1 and 1 and can effectively support the self-weight. Moreover, the collapse from the deep part of the natural ground is dealt with by reinforcing the natural ground by inserting a reinforcing bar instead of the anchor 4.

[0012]

[Embodiment 2] Although the first embodiment has been described with respect to the case where the overlapping portions of the net material for greening are connected, it can be applied to the laying of the net material for the lock net. Also in the case of this embodiment, it is the same as in the first embodiment that both edges of the net material for the lock net are polymerized and a vertical frame is constructed in the polymerized portion.

[0013]

Since the present invention is as described above, the following effects can be obtained.

<B> By superposing the joint portions of the net material and spraying the solidifying material on the superposed portion to construct the vertical frame, the joint portions of the net material can be firmly connected. Therefore,
The net material for greening can stably support the greening base material for a long period of time, and the net material for rock net can prevent rock fall and surface layer collapse for a long period of time.

<B> The vertical frame can not only simply connect the adjacent net materials, but also can effectively disperse the load acting on the net materials and avoid the concentration of the load.

<C> Since the work is simply to spray the solidifying material after arranging the reinforcing bars in the overlapping portion of the mesh material, the mesh material can be easily connected. <D> Not only a new slope can be targeted, but also an existing slope where the seam of the mesh material is peeled off can be targeted.

[Brief description of drawings]

FIG. 1 is a plan view in which a part of the slope on which the greening base material is sprayed is omitted.

FIG. 2 is a sectional view of II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

4 is a sectional view of IV-IV in FIG.

Claims (1)

[Claims] 1. A method for laying a net material in which both edges of a belt-like net material are laid on a slope, the reinforcing bar being arranged along the overlap portion of the net material, and then the overlap portion of the net material. A method of laying net material, characterized in that a continuous vertical frame is constructed by spraying a solid material until the reinforcing bars are hidden.