JPH0753997B2 - Planting difficulty slope greening method - Google Patents

Description

Detailed Description of the Invention

[0001] The present invention relates to a greening method for spraying slopes sprayed with mortar, concrete, etc., and slopes such as bedrock where plant growth is difficult.

[0002]

2. Description of the Related Art Generally, sandy soil, soil conditioner, cement,
There is known a so-called thick layer soil revegetation method in which fertilizer, plant seeds, and the like are mixed by stirring and the mixture is sprayed onto the slope with a shotgun or the like.

By the way, there is a problem in growing a plant on a plant growth difficult aspect such as a mortar spraying surface.
(1) Effect of vegetation base drying, (2) Sliding of vegetation base due to rainwater flowing over the slopes of difficult plant growth,
(3) There is a lack of nutrients and water due to the inability of roots to enter the natural ground.

From the above viewpoint, when the thick soil soil greening method is viewed, the adhesiveness (adhesiveness) to the slope and the shear strength are weak in this method, so that the gap such as rainfall may be lost with the passage of time. Sliding of the vegetation base due to water pressure, sliding of the roots of grown plants due to inability to expand at the joint surface with the slope and the roots becoming mat-shaped, or water from the ground itself which is said to be the slope where plant growth is difficult. However, there is a problem of stability of the vegetation base such as cracking of the soil itself caused by rapid drying in a place where the supply of the above can not be expected at all, and the above problems (1) to (3) cannot be sufficiently addressed.

Therefore, as a greening method for solving the problems (1) to (3), for example, Japanese Patent Publication No. 62-11127 has been proposed. In the device disclosed in this publication, as shown in FIG. 4, a belt-shaped fiber synthetic mat 42 is fixed to a slope 41 in a contour line with concrete nails 43 at appropriate intervals.
After this, anchor bolts 44 are driven along the lower edge of the fiber synthetic mat 42 at appropriate intervals, and the heads of the anchor bolts 44 are connected by a reinforcing bar 45. Further, the drain pipes 46 are inserted into the fiber synthetic mat 42 at an angle such that the back surface water of the slope 41 is guided to the outside with an appropriate interval. Then, the tip of the drainage pipe 46 is exposed to the outside, and the mortar 47 is placed downward from the center of the fiber synthetic mat 42 so as to cover the drainage pipe 46, the reinforcing bar 45 and the anchor bolt 44.
To form a horizontal beam 48 in a contour line. After this,
The vegetation material 49 is sprayed on the slope 41 divided by the horizontal beam 48 to form a vegetation base, and the slope 41 is formed by this vegetation base.
Is designed to be green.

[0006]

However, even by the above greening method, the above-mentioned various problems cannot be completely solved. That is, since the vegetation material 49 sprayed on the slope 41 is located on the upper surface of the fiber synthetic mat 42 stretched so as to be in close contact with the slope 41, runoff after spraying is prevented. Considering that, the vegetation material 49 cannot be sprayed so thickly, therefore the vegetation base formed by the vegetation material 49 sprayed on the slope 41 has
There is no large water retention capacity, and the above-mentioned problem (1) has not been completely solved.

Further, the vegetation base is not connected to the ground located below the slope 41 such as the mortar spraying surface, and therefore the roots of the plants grown on the vegetation base are in the ground. It cannot take root, and the problem of (3) above is still unsolved.

Further, in the conventional greening method described above, after the mortar 47 is sprayed to form the horizontal beam 48 so as to cover the drainage pipe 46, the reinforcing bar 45 and the anchor bolt 44,
The vegetation material 49 needs to be sprayed, that is, different kinds of spraying work need to be performed twice, and the drainage pipe 46 needs to be attached. Therefore, the construction content is very complicated. In addition, the vegetation material 49 is sloped 41
There was also a problem that the horizontal beam 48 made of mortar was exposed to the outside and the landscape was spoiled after the spraying.

The present invention has been made in view of the above problems, and an object of the present invention is to firmly attach vegetation material sprayed on a slope to the slope and to integrate the ground with the ground. Another object of the present invention is to provide a planting method for difficult-to-grow plant slopes, which can reliably and satisfactorily grow plants and which is relatively easy to construct and can form slopes with a good appearance.

[0010]

In order to achieve the above object, a method for planting a plant growth difficult slope according to the first invention is
A plurality of holes are formed on the slope at appropriate depths to reach the natural ground, a water absorbing body is loaded in the holes, and then a mesh is stretched on the slope to form the mesh. The vegetation material is sprayed over the slope from above.

According to the second aspect of the present invention, there is provided a planting-difficulty slope greening method, in which a plurality of holes are formed in the slope at appropriate intervals to reach the ground, and the holes are filled with a water absorber. ,
A plurality of partition members having a plurality of holes on the slope are erected in contour lines at appropriate intervals and substantially vertically to the slope, and then a mesh is stretched on the slope. The vegetation material is sprayed on the entire slope from above the mesh.

According to a third aspect of the present invention, there is provided a method of planting a slope for difficult plant growth, in which a plurality of holes are formed in the slope at appropriate intervals to reach the ground, and the holes are filled with a water absorber. ,
A plurality of strip-shaped fiber synthetic mats are fixed at appropriate intervals on the slope, and then a plurality of partition members having a plurality of holes are spaced at appropriate intervals to be substantially perpendicular to the slope. Standing on the slope, and then stretch the net on the slope,
The vegetation material is sprayed onto the entire slope from above the mesh.

[0013]

In the first aspect of the invention, a net-like body is stretched on the slope,
Since the vegetation material composed of plant seeds and fertilizers or plant growth base materials is sprayed from the top of this mesh, the vegetation material is held by the mesh and does not cause slipping, and the slope It can be firmly attached on top to form a strong vegetation base. Further, since the spraying work on the slope is only required to spray the vegetation material once, the construction can be easily performed, and only the vegetation material is exposed on the slope. Therefore, the appearance after construction is also good.

Further, a plurality of holes having a depth reaching the natural ground are formed on the slope, and in the holes, a water absorbing body made of super absorbent polymer resin, vermiculite, bark, peat moss or the like is formed. Since it is loaded, the water absorber absorbs and retains the water content of the ground and vegetation material or the water content during rainfall, and this water absorption body supplies water to the plants grown on the vegetation base in the dry season such as summer. The plant can be cultivated well without being replenished and causing the plant to die. Moreover, each hole provided on the slope is filled with a water absorber, and the water is retained in the water absorber, so that the vegetation base is prevented from slipping due to lack of water, that is, drying, and Is to help the roots of the plant cultivated on the vegetation base to the ground side, and the plant becomes easy to take root in the ground, that is, the plant is on the slope with the vegetation base and the ground integrated. Since the plant is cultivated satisfactorily, slipping of the vegetation base by plants can be prevented more reliably, and the slope can be greened more reliably.

In the second aspect of the invention, as in the case of the first aspect of the invention described above, the construction can be carried out easily, the appearance after construction can be made good, and the holes provided on the slopes can be loaded. In addition to being able to favorably grow plants with the water absorber, the following action and effects can be obtained. That is, in the second aspect of the invention, a plurality of partition members having a plurality of holes in the slope are erected in a contour line shape at appropriate intervals and substantially vertically to the slope surface. Since the mesh body is stretched on the partition member in a state of being floated upward from the slope, it is possible to spray the vegetation material thickly on the slope by the amount that the mesh body is floated from the slope, For this reason, the water retention capacity of the vegetation base formed of the vegetation material is enhanced, and the thicker vegetation base enables better plant growth.

In the third invention, as in the case of the above-mentioned first and second inventions, the construction can be easily carried out, the appearance after construction can be improved, and each of the surfaces provided on the slopes. The water absorbing body loaded in the hole can improve the growth of the plant, and the partition member can spray the vegetation material thickly on the slope to increase the water retention capacity of the vegetation base, thereby improving the growth of the plant. In addition, the following effects can be obtained. That is, in the third invention, since a plurality of strip-shaped fiber synthetic mats are fixed at appropriate intervals on the slope, the water contained in the vegetation base and the water flowing on the slopes are fixed by the fiber synthetic mat. The water can be collected and drained smoothly, slipping of the vegetation base is prevented, and more favorable plant growth is performed.

[0017]

EXAMPLES Hereinafter, a method for planting a plant growth difficulty slope according to the present invention will be described with reference to FIGS. In addition, in each drawing, the whole 1st-3rd invention is shown by the same drawing.

In FIG. 1, 1 is a rock mass, 2 is a spray slope in which mortar, concrete, etc. are sprayed on the rock mass 1, or a slope on which plant growth is difficult, such as bedrock. In the examples, the mortar sprayed surface is shown. And the first
In the invention, first, the mortar spraying surface 2 has
As also shown in FIG. 3, a plurality of holes 3 each having a diameter of about 10 to 40 mm are appropriately spaced, for example, 30 cm at a depth reaching the natural ground 1, for example, about 20 to 40 mm by using a drill or the like. Form.

Next, after forming a plurality of holes 3 in the mortar spraying surface 2 as described above, the water absorbers 4 are loaded into the holes 3, respectively. Examples of the water absorbent body 4 include peat moss, vermiculite, bark and super absorbent polymer resin (for example, Igetagel, trade name manufactured by Sumitomo Chemical Co., Ltd .; this product swells about 300 to 500 times due to absorption of water). ) Etc. or a mixture of one or more thereof is used. Further, the water absorbent body 4 may be directly embedded in each of the holes 3, but in a normal case, the water absorbent body 4 is housed in a bag such as a non-woven fabric that dissolves in water and the whole bag is loaded in the hole 3. It is desirable to make it possible to mass-produce the water absorbing body 4 in a factory, and to manage the water absorbing body 4 at the work site and to make the holes 3 of the water absorbing body 4 moreover. It is also convenient for loading work into. Furthermore, it is preferable that the water absorber 4 has a diameter of about 2/3 of the diameter of each hole 3, and by doing so, the loading operation of the water absorber 4 into each hole 3 can be performed reliably and easily. You can do it. Further, the water absorbent body 4 may be mixed with fast-acting, slow-acting and slow-acting fertilizers together with the highly water-absorbing polymer resin, and in this case, it is formed on the surface of the mortar spraying surface 2. The plant can be surely and satisfactorily grown on the vegetation base thus formed, and thus the mortar spraying surface 2 can be satisfactorily greened.

Then, a mesh body 5 is stretched on the mortar spraying surface 2, and the mesh body 5 is fixed on the mortar spraying surface 2 via a plurality of anchor bolts 6 having a length reaching the natural ground 1. To do. As the mesh body 5, for example, a rhombic wire mesh or a molding net is used, and the mesh size is preferably about 50 mm × 50 mm.

After the reticulate body 5 is stretched on the mortar spraying surface 2 as described above, the vegetation material 7 is sprayed on the entire mortar spraying surface 2 by either a wet spraying method or a dry spraying method. The vegetation material 7 is mainly composed of a plant seed and a vegetation base material such as a fertilizer, a growth base material, a water retention material and a sizing agent, and it is preferable to use a kind resistant to drying as the plant seed. For example, Kentucky
31 fescue, bermudagrass, red top, Medohagi, Yamahagi are formulated by appropriately selecting the seed, such as Dianthus chinensis. In addition, as the fertilizer, a mixture of fast-acting, slow-acting and slow-acting substances in an appropriate ratio is used. Further, as the growth base material, the water retaining material, the sizing agent, etc., appropriate materials can be used.

When the vegetation material 7 is sprayed by the wet spraying method, the plant seeds, the vegetation base material and water are kneaded in the mixer to form the vegetation material 7,
This vegetation material 7 is sprayed onto the mortar spraying surface 2 from a spraying nozzle by the air pressure of a compressor using a mortar spraying machine.

When the vegetation material 7 is sprayed by a dry spraying method, the applicant of the present application, for example, June 1991.
The “spraying method of the spraying base material in the greening method” (Japanese Patent Application No. 3-157568) filed on May 1, can be adopted. That is, in the spraying device disclosed in this prior application, a plant seed and a vegetation base material are mixed to form a spray base material, and the spray base material is fed to a spray nozzle by a blower, and water is supplied to the spray nozzle. Introduce this water and the spray base material from the spray nozzle to the mortar spray surface 2
To spray on.

According to the first aspect of the invention as described above, the reticulate body 5 is stretched on the surface of the mortar spraying surface 2, and the vegetation material 7 is sprayed from above the reticulate body 5, so that the vegetation is carried out. The material 7 can be held by the reticulate body 5 and reliably adhered to the mortar spraying surface 2 to form a strong vegetation base without causing slippage. Further, since the spraying work on the mortar spraying surface 2 is only required to spray the vegetation material 7 once, the construction can be easily performed, and the vegetation on the mortar spraying surface 2 is easy. Since only the material 7 is exposed, the appearance after construction is also good.

Further, a plurality of holes 3 having a depth reaching the natural ground 1 are formed on the mortar spraying surface 2, and each of the holes 3 is filled with a water absorbing body 4, so that each water absorbing body is formed. 4 absorbs and retains the water of the natural ground 1 and the vegetation material 7 or the water at the time of rainfall, and each of the water absorbers 4 replenishes water to the plants grown on the vegetation base in the dry season such as summer, Good growth of plants can be performed without causing death of the plants. Moreover, the holes 3 formed in the mortar spraying surface 2 are loaded with the water absorbing bodies 4, and the water absorbing bodies 4 retain water, so that the vegetation base is prevented from slipping due to lack of water. Together with the water absorber 4
Helps the roots of the plants cultivated on the vegetation base toward the ground side, so that the plant can easily take root in the ground, that is, the plant is integrated with the vegetation base and the mortar spraying surface 2 Therefore, the mortar spraying surface 2 can be more surely greened because the vegetation base is prevented from sliding down by the plant more reliably.

Also, in the second invention, unlike the first invention, a plurality of holes 3 are formed in the mortar spraying surface 2 and the water absorbing body 4 is loaded into each of these holes 3, and then the mesh-like structure is formed. Before the body 5 is stretched, a plurality of holes are formed on the flat surface.
A plurality of partition members 8 having 81 are appropriately spaced (for example, 1 to
2 m) is placed to stand up in a contour line and almost vertically to the mortar spraying surface 2, and the anchor bolt 9
Fixed by. At this time, as the partition member 8, for example, an expanded metal may be cut and used, or a plate material having a hole or a plain weave wire mesh may be used. The size is 40 cm
Those of × 20 cm are preferable.

Then, as described above, after the partition member 8 is fixed on the mortar spraying surface 2, the mesh body 5 is formed.
Is stretched from above the partition member 8 so as to cover the entire mortar spraying surface 2, that is, the mesh body 5 is stretched in a state of being floated by the height of the partition member 8. The vegetation material 7 is sprayed over the mortar spraying surface 2 from above the net-like body 5 after fixing with the anchor bolts 6. In the embodiment shown in FIGS. 1 and 2, a cylindrical spacer 61 is interposed around the anchor bolt 6, and the spacer 61 can keep the distance between the mortar spraying surface 2 and the mesh 5 constant. I am trying.

According to the results of experiments conducted by the present inventors, the reticulate body 5 is stretched at a height of about 6 cm with respect to the mortar spraying surface 2 so that the vegetation base has a thickness of about 12 cm. It has been found preferable to spray the vegetation material 7.

According to the second invention described above, in addition to the operational effects obtained in the first invention described above, the following operational effects are obtained. That is, in the second invention, the mortar spraying surface 2
A plurality of partition members 8 having a plurality of holes 81 are erected at appropriate intervals in a contour line and substantially vertically to the mortar spraying surface 2, and on the erected partition member 8. Since the mesh 5 is stretched in a state of being floated upward from the mortar spraying surface 2, the vegetation material 7 can be sprayed thickly on the mortar spraying surface 2 by the amount of the floating of the mesh 5. For this reason, the water retention capacity of the vegetation base formed of the vegetation material 7 is enhanced, and the thicker vegetation base allows better plant growth.

Further, in the third invention, unlike the cases of the first and second inventions, a plurality of holes 3 are formed in the mortar spraying surface 2, and after the water absorbers 4 are loaded into the respective holes 3. Before the tensioning of the reticulated body 5, a fiber synthetic mat 10 having a width of about 10 to 20 cm and a thickness of about 1 to 2 cm on the mortar spraying surface 2 (for example, Stella sheet, trade name)
A plurality of the sheets are fixed and fixed with appropriate intervals with concrete nails 11 or the like having a length reaching the natural ground 1. At this time, when the fiber synthetic mat 10 is attached to the mortar spraying surface 2, for example, 2 to 3 in the longitudinal direction (the arrow X direction in FIG. 3) which is the direction in which the mortar spraying surface 2 is inclined.
It is preferable to provide diagonally at m intervals and in the horizontal direction (direction of arrow Y in FIG. 3) so as to form a mountain shape at approximately the middle between the fiber synthetic mats 10 stretched in the vertical direction.

Then, as described above, a plurality of the fiber synthetic mats 10 are adhered to the mortar spraying surface 2, and the partition member 8 is fixed on the mortar spraying surface 2,
The reticulated body 5 is stretched over the partition member 8 so as to cover the entire mortar spraying surface 2, and then the vegetation material 7 is spread over the reticulated body 5 over the entire mortar spraying surface 2. Spray it.

According to the third invention described above, in addition to the operational effects obtained by the first and third inventions described above, the following operational effects can be obtained. That is, in the third invention, since a plurality of belt-shaped fiber synthetic mats 10 are fixed to the mortar spraying surface 2 at appropriate intervals, the water and the mortar contained in the vegetation base are each of the fiber synthetic mats 10. The water flowing on the spraying surface 2 can be smoothly collected and drained, the vegetation base is prevented from slipping off, and more favorable plant growth is performed.

Of course, the greening direction according to the present invention can be widely applied to slopes on which it is difficult to grow plants such as concrete spraying surface other than the mortar spraying surface 2 and bedrock.

[0034]

As described above, according to the greening method of the first invention, the vegetation material sprayed on the slope is held by the net-like member stretched on the slope, which causes slipping. Without doing so, the vegetation material can be surely adhered to the slope and a strong vegetation base can be formed, and the spraying operation on the slope can be performed only once by spraying the vegetation material. Since only the work is required, the construction can be performed easily, and since only the vegetation material is exposed on the slope, the appearance after the construction can be improved. In addition, a plurality of holes having a depth reaching the natural ground are formed on the slope, and a water absorber is loaded into the holes, so that the water absorbed and retained in the water absorber is stored in a dry period or the like. It is possible to replenish a plant grown on a vegetation base and cultivate the plant well without causing plant death. Moreover, since water is retained in the water absorber loaded in each hole, slippage due to lack of water content of the vegetation base, that is, drying, is prevented, and the water absorber is a plant grown on the vegetation base. A plant can be easily rooted in the ground by helping the extension of the root to the ground side, that is, the plant can be satisfactorily grown on the slope together with the vegetation base and the ground, therefore, Sliding of the vegetation base by plants can be prevented more reliably, and the slope can be greened more reliably.

Further, in the second invention, as in the case of the above-mentioned first invention, the work can be carried out easily, the appearance after the work can be made good, and the holes formed on the slope are provided. The plant can be cultivated well with the water absorber loaded in the. Further, in the second invention, a plurality of partition members having a plurality of holes in the slope are erected in contour lines at appropriate intervals and substantially vertically to the slope. Since the mesh body is stretched on the partition member in a state of being floated upward from the slope, it is possible to spray the vegetation material thickly on the slope by the amount that the mesh body is floated from the slope, For this reason, the water retention capacity of the vegetation base formed of the vegetation material can be enhanced, and moreover, the thicker vegetation base allows better plant growth.

Further, in the third invention, as in the case of the above-mentioned first and second inventions, the construction can be easily carried out, the appearance after construction can be made good, and the slope is provided on the slope. It is possible to improve the growth of plants by the water absorbing body loaded in each hole, and to increase the water retention capacity of the vegetation base by thickly spraying the vegetation material on the slope with the partition member to improve the growth of plants. It can be carried out. Moreover, in the third invention, since a plurality of strip-shaped fiber synthetic mats are fixed at appropriate intervals on the slope, water contained in the vegetation base and the slopes flow on the fiber synthetic mat. The water can be collected and drained smoothly, and the vegetation base can be surely prevented from sliding down.
It is possible to cultivate even better plants.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a construction state of a slope by a greening method of the present invention.

FIG. 2 is an oblique cross-sectional view showing a state in which a fiber synthetic mat, a partition member, and a net-like member are provided on the slope.

FIG. 3 is a plan view showing a state in which a fiber synthetic mat, a partition member, and a mesh body are provided on the slope.

FIG. 4 is a cross-sectional view showing a sloped construction state according to a conventional technique.

[Explanation of symbols]

1 ... Ground, 2 ... Slope, 3 ... Hole, 4 ... Water absorber, 5 ... Net, 7 ... Vegetation material, 8 ... Partition member, 81 ... Hole, 10 ... Fiber synthetic mat.

Claims (3)

[Claims] 1. A plurality of holes are formed on a slope surface at appropriate intervals to reach a natural depth, and a water absorbing body is loaded in the holes, and then a mesh body is stretched on the slope surface. And a vegetation material is sprayed onto the entire slope from above the reticulate body, which is a method for planting a slope on a difficult plant growth. 2. A partition member having a plurality of holes formed on a slope surface at appropriate intervals so as to reach a natural ground, a water absorber being loaded in the holes, and a plurality of holes formed on the slope surface. A plurality of the above are erected in contour lines at appropriate intervals and substantially vertically to the slope, and then a mesh is stretched on the slope, and vegetation is applied from above the mesh. A method for planting a difficult slope for plant growth, which comprises spraying the material on the entire slope. 3. A plurality of holes are formed on a slope surface at appropriate intervals to a depth reaching a natural ground, a water absorbing body is loaded in the holes, and strip-shaped fibers are formed at appropriate intervals on the slope surface. A plurality of synthetic mats are fixed, and then a plurality of partition members having a plurality of holes are erected at an appropriate interval so as to stand substantially perpendicular to the slope, and thereafter, on the slope. A method of greening a slope for difficult plant growth, which comprises stretching a net and spraying a vegetation material on the entire slope from above the net.