JPH0978588A - Greening method for slope face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely green the whole slope face by simply and surely holding a vegetation base material on the steep irregular slope. SOLUTION: Multiple anchors 2 are driven on a slope face 1 at proper intervals in the horizontal and vertical directions while head sections are protruded from the slope face 1, and cords 3 are hooked on the head sections of the anchors 2 aligned in the horizontal direction in sequence and extended in the horizontal direction in the floated state from the slope face 1. A net body 4 having proper flexibility is loosely hooked and stretched to form bag-like pocket sections 41 between the upper cord 3 and the lower cord 3, then a vegetation base material 5 is stored in the pocket sections 41, and plants 6 are grown on the vegetation base material 5 in the pocket sections 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a greening method for a slope, particularly a slope having a relatively steep and uneven surface.

[0002]

2. Description of the Related Art Conventionally, as a greening method for a steep slope, a stair-like net or a thick net is installed on the slope, and a vegetation base material is sprayed to green, and rocks on the slope are prevented from falling. It is known that a protective net is stretched, and a fixing agent such as cement mortar mixed with a synthetic resin is sprayed, and further a vegetation base material is sprayed for greening.

[0003]

However, in the method of installing the staircase-like net on the slope, the staircase-like net is generally formed to be hard, so that the slope is relatively smooth. It is convenient for, but if the slope has unevenness, it is difficult to install it following the unevenness as it is, for example, it is necessary to cut the stair-like net finely and install it, There is a problem that the work is complicated and time-consuming, and the financial burden increases.

In addition, in the case of attaching a thick net on the slope and spraying the vegetation base material for greening, the thick net is generally formed by a spring-like net reinforced by ropes. Although it is possible to spray vegetation base material thickly, vegetation base material etc. flows out from the gaps that the net has, especially when the slope is steep, nutrients etc. are washed away and the vegetation plants decline. There is a problem.

[0005] Further, in the case where a protective net for preventing rockfall and collapse is stretched on the slope and a fixing material such as cement mortar mixed with a synthetic resin, and further a vegetation base material is sprayed to be greened, When the slope is steep, it is difficult to attach a sufficient amount of nutrients, and it is particularly difficult to achieve quick and sufficient vegetation, and vegetation base materials and nutrients may be washed away.

[0006]

The present invention has been made in order to solve the above-mentioned problems, and a plurality of anchors are projected laterally and longitudinally of the slope at appropriate intervals and the head is projected from the slope. In addition to being driven in the state of being stretched, the ropes are sequentially attached to the heads of the anchors arranged in the lateral direction so as to be extended from the slope, and then the net body having appropriate flexibility. After being stretched by locking with a slack so as to form a bag-shaped pocket between the upper cord and the lower cord, the vegetation base material is accommodated in the pocket,
A plant is grown on the vegetation base material in each of the pockets.

Further, in the above-mentioned means, the ropes adjacent to each other in the longitudinal direction are connected to each other by using the ropes extending in the longitudinal direction of the slope, and the ropes are extended to the slope. A protective net may be stretched over the rope, and the pocket part formed by the net may be reinforced with a hardening material containing a fibrous material before the vegetation base material is accommodated. preferable.

The net body is stretched laterally in a state of being floated from the slope, and is stretched by slackening so that the net rope is sequentially locked from the upper rope to the lower rope. Thus, the bag-shaped pocket portions are formed, and the vegetation base material can be easily and surely held on the steep and uneven slope by accommodating the vegetation base material in these pocket portions.

[0009] Further, the ropes adjacent to each other in the longitudinal direction are connected to each other by using the ropes extending in the longitudinal direction of the slope to cope with the load of the vegetation base material and snow.

Further, a protective net is stretched over the rope extending on the slope to prevent falling of the slope surface such as rock fall.

Further, before the vegetation base material is accommodated in the pocket portion formed by the net, the pocket portion is reinforced with a hardening material containing a fibrous material to further improve durability and load resistance. Plan.

[0012]

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

FIGS. 1 to 7 show one of the embodiments of the present invention. First, as shown in FIGS. 1 and 2, for example, a plurality of anchors 2 having a diameter of 16 mm and a length of about 50 cm are installed. 150 cm in the horizontal and vertical directions of the slope 1
Place at regular intervals.

At this time, each of the anchors 2 used is preferably one having a locking portion 21 for locking a rope such as a rope on the head portion 21, and the head portion 21 having the locking portion.
Is placed in a state of being protruded from the slope 1 by about 10 cm.

Then, as shown in FIGS. 3 and 4, for example, a rope 3 made of a wire rope having a diameter of about 8 mm which is plated to improve corrosion resistance is laid on the slope 1 in parallel in the lateral direction. A plurality of heads 21 having engaging portions of the anchors 2 that are sequentially engaged with each other and extended in the horizontal direction in a state of being floated from the slope 1 are formed in the vertical direction.

Then, as shown in FIG. 5, a net body 4 having an appropriate resistance, for example, a wire of synthetic resin having a flexibility of about 10 mm and having resistance to corrosion and strength is formed from the shoulder of the shoulder. The slack is formed so as to form a bag-shaped pocket portion 41 having a depth of, for example, about 50 cm in the buttock direction, and the upper ridge 3 and the lower ridge 3 are sequentially locked and stretched.

At this time, it is preferable to preliminarily mount the anchor 2 at a position where the pocket portion 41 is easily formed by utilizing the unevenness of the slope 1. Further, the net body 4 and the cord 3 are fixed to each other by using, for example, a C-shaped rope clip (not shown) so that the pocket portion 41 can be reliably formed.

Then, as shown in FIG. 6, for example, a vegetation base material 5 mainly composed of park compost and soil generated on site is attached to the shoulder 1
From one side, using a hydraulic excavator or the like, put into each pocket portion 41, and sow mixed seeds of, for example, yamahagi, weasel hagashi, Yashabushi, Japanese pampas grass, etc. on the horizontal portion of the vegetation base material 5 put in each pocket portion 41. As a result, plants 6 can be grown as shown in FIG. 7, and the entire slope 1 can be greened.

Further, in this embodiment, the anchor 2 is previously driven at a position where the pocket portion 41 accommodating the vegetation base material 5 is formed in the concave portion formed on the slope 1, so that the vegetation base material 5 is formed. The pocket portion 41 accommodating the vegetation base material 5 is placed on the slope 1 in a stable state. In order to stabilize and to cope with the load due to snow, etc., the ropes 3 extending vertically adjacent to each other as shown in FIG.
It is advisable to connect them to each other using the ropes 7 extending in the longitudinal direction.

More specifically, for example, a plurality of anchors 71 are laid in the shoulder 11 laterally at appropriate intervals, and the ropes 7 made of wire rope are hung on the anchors 71 to form a net body. 4 are sequentially connected to the laterally extending cords 3 that hold 4 by fastening or using metal fittings.

When part or all of the slope 1 is formed of weathered soft rock, the ropes 3 and 7 extending on the slope are plated, for example, as shown in FIG. Diameter 2
It is possible to prevent rockfall and collapse by tensioning the protective net 8 made of a diamond-shaped wire net having a mesh of about 50 mm formed of a wire rod of about 3 mm using, for example, a coupling coil fitting.

Further, if necessary, as shown in FIG.
Before adding the vegetation base material, for example, 50c with a thickness of 5 mm
Sheets of soft synthetic resin such as polyethylene of about m square 9
By housing the inside of the pocket portion 41, it is possible to prevent outflow of the vegetation base material 5 due to running water such as rainwater, prevention of dryness in summer, and prevention of freezing in winter.

The soft synthetic resin sheet 9 is the net 4
By fixing them together with the rope 3 by means of a C-shaped rope clip used for fixing them to each other, they can be surely arranged at a predetermined position, and in particular, they can be prevented from scattering in strong winds. There is no need to worry about misalignment or dislodgement due to the vegetation base material input.

Before the vegetation base material 5 is accommodated in the pocket portion 41 formed by the net 4, a hardener such as concrete mixed with fibrin is applied to the outer peripheral surface of the pocket portion 41 along, for example, the longitudinal flow path. By spraying and reinforcing the pocket portion 41, it is possible to reinforce the pocket portion 41 itself and further prevent the vegetation base material and the slope from flowing out due to the vertical running water.

Further, in the above embodiment, the wire ropes are used as the cords 3 and 7, the one formed by the wire made of the synthetic resin is used as the net body 4, and the wire net is used as the protective net 8. However, these are examples. It goes without saying that other materials such as polyamide resin having excellent corrosion resistance and tensile strength may be used for the cords 3 and 7, for example.

Further, in the above-mentioned embodiment, the net body 4 is
The case where the cords are loosened so as to form the bag-shaped pocket portion 41 and the cords are stretched from the upper cord 3 to the lower cord 3 in order is shown. May be tensioned to the cords 3 in sequence and stretched, or a plurality of mesh bodies 4 may be used without stretching from the shoulder to the hip by one mesh body 4. It is not necessary to stretch the net body 4 over the entire slope.

[0027]

According to the method of planting the slope of the present invention, the anchor is set on the slope, and the ropes are sequentially attached to the heads of the anchors which are arranged in the lateral direction to lift the anchor from the slope. In a state of being extended, and then a net with appropriate flexibility,
It is a simple work of giving a slack so as to form a bag-shaped pocket portion and sequentially tensioning it from the upper rope to the lower rope in order and stretching it, to a steep and uneven slope. The vegetation base material can be easily and surely held and the entire slope can be surely greened, and it can be implemented at low material cost and labor cost in a short construction period, which is economically excellent.

In particular, since the pocket portion formed by the net body is locked by the laterally extending line formed in the slope, the vegetation base material can be secured on any steep slope. In addition to being able to hold the rope, the rope that locks the net is extended from the slope,
A pocket part that can accommodate a sufficient amount of vegetation base material can be formed on the slope surface, and more vegetation base material can be stored when the pocket part that is anchored to the anchor is formed in the concave part of the slope surface Not only that, the vegetation base material can be held in a more stable state.

An anchor placed on the slope and
The ropes that are sequentially attached to the anchors that are arranged side by side serve as scaffolds, and the subsequent operations such as netting, feeding vegetation base material, and sowing can be performed safely.

Further, the ropes which are adjacent to each other in the longitudinal direction are connected to each other by using the ropes extending in the longitudinal direction of the slope so as to cope with the load of the vegetation base material and snow. You can

Furthermore, by laying a protective net on the rope extending on the slope, it is possible to prevent falling of the slope surface such as rock fall, and the vegetation base is formed in the pocket formed by the net. It is possible to further improve durability, load resistance, etc. by reinforcing the pocket portion with a hardening material mixed with a fibrous material before accommodating the material.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a step in one of the embodiments of the present invention.

FIG. 2 is an enlarged sectional view of FIG.

FIG. 3 is an explanatory diagram showing a step that follows FIG.

FIG. 4 is an enlarged cross-sectional view of FIG.

5 is an enlarged cross-sectional view showing a step that follows FIG.

FIG. 6 is a sectional view showing a step following FIG. 5;

FIG. 7 is an enlarged cross-sectional view showing a step that follows FIG.

FIG. 8 is an enlarged cross-sectional view showing a step in a different embodiment of the present invention.

FIG. 9 is an enlarged cross-sectional view showing a step in a different embodiment of the present invention.

FIG. 10 is an enlarged cross-sectional view showing a step in another embodiment of the present invention.

[Explanation of symbols]

 1 Slope 2 Anchor 3 Rope 4 Net body 5 Vegetation base material 7 Rope 8 Protective net 21 Head 41 Pocket

Claims (4)

[Claims] 1. An anchor head having a plurality of anchors mounted at appropriate intervals in the lateral and longitudinal directions of the slope and with the head projecting from the slope, and the heads of the anchors arranged side by side in the lateral direction. The ropes are sequentially attached to each other and extended laterally in a state of being floated from the slope, and then a net having appropriate flexibility is formed between the upper and lower ropes in a bag shape. The present invention is characterized in that the vegetation base material is accommodated in the pocket portion after the slack is locked and stretched so as to form the pocket portion, and the plant is grown on the vegetation base material in each of the pocket portions. Slope greening method. 2. The method for planting slopes according to claim 1, wherein the ropes that are vertically adjacent to each other are connected to each other by using the ropes that are extended in the longitudinal direction of the slope. . 3. The greening method for slopes according to claim 1 or 2, wherein a protective net is stretched over a rope extending on the slopes. 4. The greening of the sloped surface according to claim 1, 2 or 3, wherein before the vegetation base material is accommodated in the pocket formed by the net, the pocket is reinforced with a hardening material containing a fibrin. Construction method.