JP3300934B2 - Hard slope vegetation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates vegetation method hard slopes, in particular, concrete retaining wall formed in the roadside wall or slope like surface, <br/> hard slope rock is directly bared And a vegetation method for vegetation.

[0002]

2. Description of the Related Art If left as it is on the road side wall or slope, the bedrock will collapse or the bedrock or topsoil will be washed away by running water such as rainwater. A so-called vegetation method is employed in which seeds are actively planted and sown to reinforce the plants with roots. As such a vegetation method, a spraying method in which a base material in which plant seeds, fertilizers, and the like are mixed is sprayed on a slope or the like to represent a vegetation. Or a frame construction method in which vegetation is performed by spraying or rubbing soil with a frame formed on the slope to prevent runoff of earth and sand. When such various vegetation methods are applied to a slope such as a slope, plants can be grown on the slope early and surely, and the slope is protected by the roots of the vegetation.

[0003] Moreover, as the plants thrive,
It is possible to not only protect the natural ecology by increasing the absolute amount of “green”, but also to improve the landscape and, of course, prevent disasters such as landslides.

[0004] However, the above-mentioned vegetation methods are based on the condition that slopes such as slopes have a property that allows plants to take root, and in order to prevent bedrock and collapse thereof. It cannot be applied to hard slopes such as concrete retaining walls formed in
In particular, the concrete retaining wall is formed to prevent the collapse of steep slopes, so that the conventional vegetation method as described above cannot be applied to hard and steeply inclined concrete retaining walls as it is. It is. For this reason, in the past, this concrete retaining wall was often left as it was, and at the most, the construction was as simple as applying green paint to the surface.

Accordingly, the present inventors have conducted various studies to vegetate concrete retaining wall surfaces, on which it is difficult to apply the vegetation method, while making full use of the merits of the vegetation method. The present invention has been completed.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above situation, and an object of the present invention is to perform vegetation (greening) on a hard slope such as a hard concrete retaining wall having a steep slope. That is.

An object of the invention according to claim 1 is to propose a vegetation method in which vegetation is performed on a hard slope such as a concrete retaining wall while taking advantage of the conventional spray vegetation method.

Another object of the invention according to claim 2 is to propose a vegetation method in which the base material can be more reliably integrated with the concrete retaining wall surface in addition to the object of claim 1. .

[0009]

Means for Solving the Problems To solve the above problems, means according to the first aspect of the present invention will be described with reference numerals used in the embodiments. A vegetation method for performing vegetation using a slope anchor 30 on a hard slope such as a concrete retaining wall surface 20 formed on the surface of a slope 10 such as a slope for supporting the slope anchor 30 on the hard slope. A plurality of the insertion holes 21 are formed, and a slope anchor 30 having an anchor shaft 31 having a diameter sufficiently smaller than the diameter of the insertion holes 21 is provided.
An upper portion of the anchor shaft 31 is provided with a wing plate 32 integrated so as to extend in a direction perpendicular to the anchor shaft 31 and a wing portion 33 formed below the anchor shaft 31. And the wings 33 provided below the anchor shaft 31 to insert the slope anchor 3
While preventing rotation of the entire 0, slopes on the hard slope
After arranging the anchors 30 and spraying the vegetation base material 41 to such an extent that substantially the entirety of each slope anchor 30 is buried, a net 50 is stretched on the surface, and the plant seeds 43 are further placed on the net 50. A vegetation method on a hard slope, wherein the growth base material 42 is sprayed. ".

That is, in the vegetation method of a hard slope according to the present invention, first, a slope anchor 30 is attached to a hard slope such as a slope 10 from which a bedrock is exposed as it is or a concrete retaining wall 20 formed on the slope 10. A large number of insertion holes 21 for supporting the vegetation base material 41 are formed in advance, and the insertion holes 21 are used to prevent the vegetation base material 41 from flowing down.
And a net 50 is stretched after spraying the vegetation base material 41 thereon, and the growth base material 42 including the plant seeds 43 is further sprayed thereon. Vegetation base material 4 by
The spraying vegetation method is applied while holding 1 on a hard slope such as the concrete retaining wall surface 20.

The means adopted by the invention according to claim 2 is that the plant seed 43 and the peat moss, synthetic fiber, etc. are contained in the vegetation base material 41 or the growth base material 42 used in the vegetation method of claim 1. Is mixed in advance, and the shape is formed on the surface of the wing plate 22 on the other hand.
The long fiber 44 is inserted into the recess (not shown) of the formed long fiber 44.
The concrete retaining wall 2 of the vegetation base material 41, the growth base material 42, and the plant seed 43 is entangled by the long fibers 44 entangled.
The one that ensures integration with hard slopes such as 0 "
It is.

[0012]

The operation of the vegetation method according to the first aspect of the present invention will be described. First, the anchor shaft 31 of the slope anchor 30 is inserted into each of the insertion holes 21 formed as shown in FIG. Is inserted in the upper portion of the anchor shaft 31 as shown in FIGS.
Are integrally formed. Therefore, the blade plate 32 is positioned in contact with the surface of the hard slope such as the concrete retaining wall surface 20. In addition, the slope anchor 30
Has a wing portion 33 below the anchor shaft 31,
Moreover the ends of the wings 33 as shown in FIGS. 5 and 7,
For example, it has a curved shape. Therefore, while the slope anchor 30 is in contact with the hard inner wall surface of the insertion hole 21, it is guided by the curved shape of the end of the wing portion 33 , and is smoothly inserted so as to slide on the inner wall surface. Wing 3
3, the rotation of the entire slope anchor 30 is prevented.

Further, since the diameter of the insertion hole 21 into which the anchor shaft 31 of each of the side surface anchors 30 is inserted is made sufficiently larger than that of the anchor shaft 31, the anchor shaft 31 is inserted into the insertion hole 21. although become a gap is formed between the, as this gap is to be discussed later
In addition, it will play an important role.

That is, although the slope 10 and the concrete retaining wall 20 are hard ones on which plants cannot take root, the above-mentioned gaps are partially present in these slopes 10 and the concrete retaining wall 20. Plants can take root sufficiently in this gap. The vegetation base material 41 to be described later is sprayed onto a hard slope such as the concrete retaining wall surface 20 to enter the gap into the gap. Will be able to grow enough.

Further, as shown in FIG. 3, it is most effective that the insertion holes 21 into which the slope anchors 30 are to be inserted are arranged in a so-called staggered manner. This is because the slope anchors 30 for preventing the vegetation base material 41 and the like from flowing down are inserted into the insertion holes 21 by the blades 32, so that the slope anchors 30 are staggered. This is because the arrangement of the vegetation base material 41 ensures that the vegetation base material 41 and the like are prevented from flowing down.

As described above, the slope anchors 30 are arranged on the hard slope such as the concrete retaining wall 20 and the vegetation base material 41 is sprayed on the hard slope such as the concrete retaining wall 20 as shown in FIG. However, the vegetation base material 41 is sprayed with water. As a result, as shown in FIG. 3 , on the hard slope such as the concrete retaining wall surface 20, the slats 32 are arranged in a staggered manner, and the slope anchors 30 forming a large number of weirs are present. Therefore, the vegetation base material 41 is trying to fall in the vertical direction.
Is also reliably prevented by the weir . The result
As a result, the vegetation base material 41 is reliably prevented from flowing down , and the slope anchors 30 are integrated with the hard slope side such as the concrete retaining wall surface 20 by the anchor shaft 31. The material 41 is integrated with a hard slope such as the concrete retaining wall 20.

By mixing the plant seeds 43 and the long fibers 44 in advance in the vegetation base material 41 as in the invention according to the second aspect, each long fiber 44 becomes a blade plate of the slope anchor 30. It is securely entangled with the 32 holding recesses . Therefore, the integration of the vegetation base material 41 with the hard slope such as the concrete retaining wall surface 20 becomes more reliable.

After the vegetation base material 41 is sprayed on a hard slope such as the concrete retaining wall surface 20 as described above , FIG.
As shown in the figure, a net 50 is formed on the surface of the vegetation base material 41.
It is stretched. Finally, the vegetation plant 42
It grows and prospers in the house.

In the following embodiment, in order to secure the fixing of the stretched net 50 on the hard slope side such as the concrete retaining wall surface 20, the above-described slope anchor 30 and the above-described slope anchor 30 are used. Separately, the net anchor 51 is driven from above the net 50 or inserted into the insertion hole 21. The net 50 prevents the vegetation base material 41 from falling off on a hard slope such as the concrete retaining wall surface 20 and the like. This ensures integration with the hard slope side.

On a net 50 stretched on the vegetation base material 41, a growth base material 42 containing plant seeds 43 is placed.
Spray. Thus, since the net 50 to be a hook of the plant seed 43 and the growth base material 42 exists on the vegetation base material 41, the plant seed 43 and the growth base material 42 flow down on the vegetation base material 41. Never. In particular, if the growth base material 42 is sprayed after the vegetation base material 41 has a state of having good water absorbability, the water causing the flow is absorbed into the vegetation base material 41, so that the plant The seeds 43 and the growth base material 42 flow down the net 5
Together with the action by zero, it is completely prevented.

In particular, if the long fibers 44 described above are mixed in the growth base material 42, the plant seeds 43, the growth base material 42 and the like can be more easily entangled with the net 50. The integration of the growth base material 42 on the hard slope side such as the concrete retaining wall surface 20 is more reliably performed.

As described above, according to the inventions of the respective claims, the vegetation base material 41 is, of course, applied to hard slopes such as the concrete retaining wall surface 20 where integration of the vegetation base material 41 is difficult. The integration of the growth base material 42 including the plant seed 43 can be reliably performed. Therefore, vegetation can be reliably performed even on hard slopes such as the concrete retaining wall surface 20 which is a steep slope which was conventionally impossible to vegetate or the slope 10 where the rock is exposed as it is, and the hard slope such as the concrete retaining wall face 20 etc. Can be covered with plants.

Further, after the vegetation method according to the present invention is applied, it is attempted to cause the vegetation base material 41, the growth base material 42, the plant seeds 43, and the like to run off by rain or the like. By using, for example, the vegetation base material 41 is securely held on the hard slope side such as the concrete retaining wall surface 20 by each slope anchor 30, and the vegetation base material 41 is connected to the concrete retaining wall surface 20 by the net 50. And so forth, the runoff of the vegetation base material 41 is reliably prevented. Moreover, the growth base material 42 and the plant seeds 43 on the vegetation base material 41 are integrated with the hard slope side such as the concrete retaining wall surface 20 by the net 50. It is also one that has been prevented from running away.

More importantly, even if the slope 10 is a hard rock and there is a hard slope such as the concrete retaining wall 20 on the slope, the hard slope such as the concrete retaining wall 20 is used as a slope for the slope 10. An insertion hole 21 for supporting the anchor 30 is formed, and a gap exists between the insertion hole 21 and the anchor shaft 31 of the slope anchor 30. The roots of the plants that have germinated and started to grow can enter the slope 10 through the insertion holes 21.

Therefore, the plant seeds 43 can sufficiently root on hard slopes such as the concrete retaining wall 20 to which the vegetation method is applied, and the concrete retaining wall 2
Vegetation on hard slopes such as 0 can be reliably performed.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the invention according to each claim will be described with reference to the embodiments shown in the drawings. The invention according to claim 1 is substantially included in the invention according to claim 2. ,
The following description is made mainly on the vegetation method according to claim 2.

The slope 1 is used to prevent the slope 10 from collapsing.
For a hard slope such as the concrete retaining wall surface 20 formed on the surface of No. 0 , as shown in FIG. 1 , a large number of insertion holes 21 are drilled using a drill or the like until reaching the ground (shown). Perforate. In this case, the diameter of the insertion hole 21 is set to be sufficiently larger than the anchor shaft 31 of the slope anchor 30, and the arrangement of the insertion holes 21 is such that the blade plate 32 of the slope anchor 30 inserted therein is, for example, It is most desirable to arrange them in a staggered manner as shown in FIG.

When drilling these insertion holes 21, a net anchor 5 different from the slope anchor 30 is used.
It is preferable to form a hole for one. It is most preferable that the formation density of each insertion hole 21 be 1 piece / m ² or more.

Next, as described above, as shown in FIG.
Regarding appropriate ones of the perforated insertion holes 21, a slope anchor 30 in which a wing plate 32 is integrated with an anchor shaft 31 is provided.
It is important to insert the anchor shaft 31 in a state where the wings 33 of the anchor shaft 31 are in contact. In this case, as shown in FIG. 3 , it is desirable to insert the slats 32 of each of the slope anchors 30 in a zigzag manner so that they are all horizontal and parallel.

Each slope anchor 30 used here
As shown in FIGS. 5 and 7 , for example, the upper part of the anchor shaft 31 inserted into the insertion hole 21 of the hard slope such as the concrete retaining wall 20, that is, the concrete retaining wall 20
The upper end portion exposed on the surface of the hard slope such as the above is integrated with a blade plate 32 extending transversely to the anchor shaft 31 at right angles. Anchor shaft 31 of this blade 32
May be achieved by forming the entire slope anchor 30 by so-called integral molding. Alternatively, as shown in FIG. 5 , the bonding may be performed by bonding or welding. In the case of bonding or welding, as shown in FIG. 6 , a concave groove in which the anchor shaft 31 can be inserted is formed in the center of the blade plate 32, and the concave groove allows the blade plate 32 to be fixed to the anchor shaft 31. It is preferable to increase the contact area.

The blade plate 32 of the slope anchor 30 shown in each figure is formed as a simple plate, but this blade plate 32 is for damping the vegetation base material 41 which is going to flow down or run off. Therefore, in order to be able to make the dam better, it is configured as a curved one that is convex below the hard slope such as the concrete retaining wall surface 20 or a whole that has a large number of trapped recesses in a wavy shape. May be implemented.

When the arrangement and fixing of the slope anchors 30 are completed, the concrete retaining wall surfaces 20 located between them are arranged.
The vegetation base material 41 and the like are sprayed on the hard slope such as the above, but in the present invention, the spraying is performed twice. The first time, that is, the plant seeds 43 are not included in the vegetation base material 41 to be sprayed directly on the hard slope such as the concrete retaining wall surface 20, and the second time, that is, the hard slope surface such as the concrete retaining wall surface 20 is formed. Growth base material 42
The spraying was performed twice so as to include the plant seeds 43 therein. The reason is that the vegetation base material 41
Is thick, the plant seeds 43 for vegetation may be buried deep in the soil, and such plant seeds 43 have a low germination rate and cannot perform good vegetation. is there. Conversely, when the thickness of the vegetation base material 41 is such that the germination of the plant seeds 43 is not hindered, the vegetation base material 41 is made to include the plant seeds 43 from the beginning and spraying is performed. Can be completed only once.

The vegetation base material 41 for the first time when the spraying was divided into two was configured to include sand, soil improvement material, fertilizer, joining material and the like. As the sand in this case, soil or mountain sand at the construction site is used,
As the bonding agent, cement, lime or synthetic resin is used. Park compost or perlite is used as a soil improving material, and for example, superphosphate lime is used as a fertilizer. More specifically, fertilizer is added to a mixture of cement, water, and sand at a weight ratio of 1: 2: 26, and the upper end of the slope anchor 30 is almost hidden. Spray.

The second growth base material 42 is obtained by adding a plant seed 43 of a type suitable for vegetation on a hard slope such as the concrete retaining wall surface 20 to the above-mentioned one. As 43, Kentucky, weeping glass, or the like is selected. This second plant seed 4
The thickness of the vegetation base material 41 not including the plant seeds 43 below the vegetation base material 41 including the plant seeds 43 under the construction is approximately 12 c.
In the case of m, it was about 3 to 7 cm.

Of course, as shown in FIG. 2 , long fibers 44 are mixed in advance in the above-mentioned two base materials, and the long fibers 44 are made of vegetable cotton such as peat moss. Fibers or chemical fibers having a continuous continuous fiber shape are employed.

Although the description has been made slightly before and after the second spraying of the growth base material 42 including the plant seeds 43, as shown in FIG. A net 50 formed of a material was sprayed to such an extent that each slope anchor 30 was buried.
It is stretched on the vegetation base material 41 for the first time. This net 50
It is sufficient that the upper end is firmly fixed to the upper end side of the hard slope such as the concrete retaining wall surface 20 and the lower end is firmly fixed to the lower end side of the hard slope such as the concrete retaining wall surface 20.

On the other hand, in the above-mentioned embodiment, the required portion of the net 50 can be fixed by the net anchor 51 to be fixed to the hard slope side such as the concrete retaining wall surface 20.

By spraying the growth base material 42 including the above-described plant seeds 43 from above the stretched net 50, the vegetation method is completely completed as shown in FIG . .

[0039]

As described in detail above, in the invention according to the first aspect, as described in the above embodiment, "the concrete retaining wall surface 20 formed on the surface of the slope 10 such as the side wall surface or the slope" is used. A vegetation method for performing vegetation using the slope anchor 30 on a hard slope such as the one described above, wherein a number of insertion holes 21 for supporting the slope anchor 30 are formed on the hard slope, and these are inserted. Slope anchor 3 having anchor shaft 31 having a diameter sufficiently smaller than the diameter of hole 21
0 is provided with a wing plate 32 integrated above the anchor shaft 31 so as to extend in a direction orthogonal thereto, and a wing portion 33 formed below the anchor shaft 31;
Appropriate to that of the insertion hole 21, while preventing rotation of the entire 30 of the insert to slope anchors the Rukoto with wings 33 having a lower portion of the anchor shank 31, the hard slope on
The slope anchors 30 and array, the anchor 30 for each slope
After spraying the vegetation base material 41 to the extent that almost the entire
To, a net 50 Zhang was set on the surface, further, net 5
0, the growth base material 42 containing the plant seeds 43 is sprayed from above, and the concrete retaining wall surface 20 and the bedrock are exposed as they are while taking advantage of the conventional spraying vegetation method. And a vegetation method for vegetation on a hard slope.

Further, according to the vegetation method according to claim 2,
Since the plant seeds 43 and the long fibers 44 are previously mixed in the vegetation base material 41 or the growth base material 42 to be sprayed on the hard slope such as the concrete retaining wall surface 20, the long fibers 44 are used in each method. The surface anchor 30 is entangled with the capture recess of the slat 32 or the net 50, and the vegetation base material 41, the growth base material 42, and the plant seed 43 can be more reliably held on the hard slope such as the concrete retaining wall surface 20. In addition, it is possible to reliably prevent the flow-down and run-off during or after construction.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a state where an insertion hole for an anchor shaft is formed on a slope.

FIG. 2 is a partial cross-sectional view showing a state where the implementation of the method of the present invention has been completed on a slope.

FIG. 3 is a cross-sectional view showing a state in which the blades of the slope anchor are arranged in a staggered manner in the insertion holes.

FIG. 4 is a partial plan view showing a state where a vegetation plant is growing and growing with a net on a slope.

FIG. 5 is a front view of a slope anchor used in practicing the present invention.

FIG. 6 is a plan view of the same slope anchor.

FIG. 7 is a side view (a) and a rear view (b) of the same slope anchor.

[Explanation of symbols]

 Reference Signs List 10 slope 20 concrete retaining wall surface 21 insertion hole 30 slope anchor 31 anchor shaft 32 slat 33 wing part 41 vegetation base material 42 growth base material 43 plant seed 44 long fiber 50 net 51 net anchor

Continuation of the front page (56) References JP-A-5-51932 (JP, A) JP-A-63-78923 (JP, A) JP-A-2-74724 (JP, A) (58) Fields investigated (Int) .Cl. ⁷ , DB name) E02D 17/20 102

Claims (2)

(57) [Claims] 1. A vegetation method for performing vegetation using a slope anchor on a hard slope such as a concrete retaining wall formed on the surface of a slope such as a road side wall or a slope. In addition to forming a large number of insertion holes for supporting surface anchors, a slope anchor having an anchor shaft with a diameter sufficiently smaller than the diameter of these insertion holes is placed in the upper part of the anchor shaft in a direction orthogonal to this. By providing a blade plate that is integrated so as to extend and a wing portion formed below the anchor shaft, by inserting it into an appropriate insertion hole together with the wing portion below the anchor shaft. While blocking the rotation of the entire slope anchor , the slope anchors are arranged on the hard slope, and after spraying a vegetation base material to such an extent that substantially all of the slope anchors are buried, Net on the surface A vegetation method for hard slopes, wherein a growth base material including plant seeds is sprayed from above the net. 2. The method according to claim 1, wherein the seeds and the long fibers are mixed in advance in the vegetation base material or the growth base material, and a long fiber trapping recess is formed on the surface of the slat. The method for vegetating hard slopes according to claim 1.