JP3935690B2 - Slope greening method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slope greening method for greening sloped ground such as embankments for the purpose of slope protection.
[0002]
[Prior art]
On slopes found in embankments and cuts, road embankments, river embankments, etc., it is necessary to prevent slope erosion, delamination, and falling rocks by protecting them with appropriate means. .
[0003]
As a method of slope protection, spraying concrete or mortar is known as a typical method, but recently, in order to consider the environment, slope protection by greening has been increasingly adopted. It was.
[0004]
As a method of protecting the slope by greening, it is common to spray a vegetation base made of an aqueous slurry obtained by stirring and mixing plant seeds, fertilizer, water, chip material, adhesive, etc. on the slope. According to this, after spraying on the slope, the root of the plant that germinates after a certain period of time spreads in the inclined ground, and the inclined ground can be stabilized.
[0005]
[Problems to be solved by the invention]
Here, in order for a plant to grow, a pH environment suitable for its growth is necessary. If the pH of the surface layer of the inclined ground is too small or too large, it becomes difficult to green the inclined ground.
[0006]
However, recently, the soil has been acidified, so that even if the slope is greened, the planted tree does not grow and sometimes dies.
[0007]
In other words, when a sedimentary layer that used to be the seabed is raised above the ground, the sedimentary layer will be exposed to the ground by cutting work during ground preparation, but such a sedimentary layer contains sulfide. In many cases, the sulfide is oxidized by exposure to the surface of the earth, and sulfuric acid is generated to acidify the surface layer of the slope.
[0008]
Such problems include spraying cement material on the slope and then spraying the vegetation base, laying a drainage sheet on the slope and then spraying the vegetation base, or pre-containing the vegetation base itself with an alkaline component. Attempts have been made to avoid this, but cement-based materials and drainage sheets can block the effects of acidic soil, but prevent the growth of plant roots that grow on the vegetation base. The problem of hindering the growth and the method of adding an alkaline component to the vegetation base itself cause a problem that the pH of the vegetation base becomes too high and hinders the growth of the plant from the beginning.
[0009]
The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide a slope revegetation method that can reliably perform revegetation even when the sloped soil is acidified.
[0010]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the slope revegetation method according to the present invention includes a predetermined drainage neutralization plate placed on a slope of acidic soil as described in claim 1 and then the drainage neutralization. A slope planting method in which a vegetation base is sprayed on a board, and a drainage means is installed outside the area where the drainage neutralization board is disposed, and the drainage neutralization board is provided with a number of chips. By constructing by cementing together with cement-containing materials so that a gap is formed between them, the acid water that has entered from the surface of the acid soil side is neutralized, and the acid water is drained in the in-plane direction within the cross section. And the drainage neutralization plate is configured such that the cement-containing substance is decomposed, and the arrangement region is a rectangular region, and the longitudinal direction of the drainage neutralization plate is on the slope with respect to the slope direction of the slope. A region that forms a predetermined angle, diagonally above the arrangement region in the longitudinal direction And it is intended to install the current draining means to each outer side of the longitudinal oblique lower edge.
[0014]
In the slope greening method according to the present invention, the chip is made of a piece of wood.
[0015]
When performing slope planting according to the slope planting method according to the reference invention, first, the predetermined drainage neutralization plate is fixed to the slope of acidic soil using a fixing means such as a nail and the drainage is fixed. A mesh body such as a metal lath or a plastic net is stacked on the neutral neutralizing plate, and the mesh body is fixed to the slope.
[0016]
Next, the vegetation base is sprayed on the drainage neutralizing plate.
[0017]
In this way, the drainage neutralization plate used in the reference invention can be placed on the slope in a stable state, and the drainage neutralization plate can remove the acidic water that has infiltrated from the slope of the acidic soil. Since it is configured to neutralize and drain the acidic water in the in-plane direction within the cross section, even if acidic water is leached from acidic soil due to rainfall or the like, the acidic water is First of all, do not enter directly into the drainage neutralization plate.
[0018]
The acidic water that has entered the drainage neutralization plate is neutralized by the neutralization action of the drainage neutralization plate, so even if it subsequently enters the vegetation platform, there is no effect on the pH environment in the vegetation platform. There is no adverse effect. Rather, acid water that has entered the drainage neutralization plate is neutralized and part of it remains in the drainage neutralization plate due to surface tension, etc., and then enters the vegetation base by vaporization and capillary action. Thus, it plays a role of supplying appropriate moisture, and it becomes possible to suppress drying of the vegetation base.
[0019]
Moreover, even if the acidic water that has entered the drainable neutralizing plate from the acidic soil cannot be completely neutralized, for example, it remains weakly acidic, the acidic water is in-plane within the cross section due to the draining action of the drainable neutralizing plate. It drains in the direction, and eventually reaches the Houshiri side without entering the vegetation base. Therefore, it does not have any adverse effect on the growth of trees on the vegetation base.
[0020]
On the other hand, since the drainage neutralization plate is configured to be decomposed by the acidic water, the drainage neutralization plate gradually shifts to weak alkali and neutral while neutralizing the acidic water, Decomposes over time.
[0021]
Therefore, trees that grow on the vegetation base penetrate the decomposed drainage neutralization plate, extend the roots to the underlying soil, and continue to grow smoothly. In addition, the soil that was acidic when the vegetation base was sprayed has shifted to a non-acidic environment due to the neutralization action described above, and in this respect as well, the trees on the vegetation base are grown in an appropriate pH environment. Can be made.
[0022]
In performing the revegetation according to the revegetation method according to claim 1, first, a predetermined drainage neutralization board is arranged on the slope of the acidic soil, and a vegetation base is placed on the drainage neutralization board. In addition to spraying, a drainage means is installed outside the area where the drainable neutralizing plate is disposed.
[0023]
As described above, when the drainage neutralization plate is arranged on the slope of the acidic soil, and the vegetation base is sprayed on the drainage neutralization plate, the drainage neutralization plate used in the present invention becomes the slope of the acid soil. Since it is configured to neutralize the acid water that has infiltrated from and drain the acid water in the in-plane direction within the cross section, even if acid water has leached from the acid soil due to rainfall, The acidic water does not directly enter the vegetation base, but first enters the drainage neutralization plate.
[0024]
The acidic water that has entered the drainage neutralization plate is neutralized by the neutralization action of the drainage neutralization plate, so even if it subsequently enters the vegetation platform, there is no effect on the pH environment in the vegetation platform. There is no adverse effect. Rather, acid water that has entered the drainage neutralization plate is neutralized and part of it remains in the drainage neutralization plate due to surface tension, etc., and then enters the vegetation base by vaporization and capillary action. Thus, it plays a role of supplying appropriate moisture, and it becomes possible to suppress drying of the vegetation base.
[0025]
Moreover, even if the acidic water that has entered the drainable neutralizing plate from the acidic soil cannot be completely neutralized, for example, it remains weakly acidic, the acidic water is in-plane within the cross section due to the draining action of the drainable neutralizing plate. It drains in the direction, and eventually reaches the Houshiri side without entering the vegetation base. Therefore, it does not have any adverse effect on the growth of trees on the vegetation base.
[0026]
On the other hand, since the drainage neutralization plate is configured to be decomposed by the acidic water, the drainage neutralization plate gradually shifts to weak alkali and neutral while neutralizing the acidic water, Decomposes over time.
[0027]
Therefore, trees that grow on the vegetation base penetrate the decomposed drainage neutralization plate, extend the roots to the underlying soil, and continue to grow smoothly. In addition, the soil that was acidic when the vegetation base was sprayed has shifted to a non-acidic environment due to the neutralization action described above, and in this respect as well, the trees on the vegetation base are grown in an appropriate pH environment. Can be made.
[0028]
Any of the above-described spraying of the vegetation base and the arrangement of the drainage and drainage means may be performed in advance.
[0029]
Furthermore, in the slope revegetation method according to claim 1, as described above, since the drainage means is installed outside the area where the drainage neutralizing plate is disposed, the water is collected and drained by rain or the like. It is possible to prevent the inflow of the neutralizing plate into the arrangement area, to suppress the elution of acidic substances in the arrangement area, and to collect and drain the acidic water that has leached from the slope of the arrangement area. It becomes possible to prevent the outflow from the arrangement area, and there is no concern of acidifying the surrounding soil.
[0031]
How the drainage means is configured is arbitrary, and may be appropriately configured by a known means such as a U-shaped groove and a drainage pipe, and the groove is excavated along the edge of the arrangement region and the groove. It may be configured to be filled with a drain body such as gravel.
[0032]
Here, the arrangement area is a rectangular area, and the longitudinal direction thereof is an area that forms a predetermined angle on the slope with respect to the slope direction of the slope, and the oblique upper edge and the longitudinal direction of the arrangement area In the case where the drainage means is installed on each outer side of the oblique lower edge, it is possible to prevent the inflow of water from above the arrangement area and the outflow of acidic water to the bottom. Such an invention is a particularly effective means in the case where the direction of the formation exposed on the slope is not vertical but is inclined by a predetermined angle or is horizontal and the formation is acidic soil. .
[0033]
The drainage neutralization plate used in each of the inventions described above is configured by solidifying a large number of chips with a cement-containing substance so that gaps are generated between the chips.
[0034]
In such a configuration, the drainage function is ensured by the gap between the chips, and the neutralization function is secured by the alkalinity of the cement-containing substance, and the strength as a plate is secured by the caking action of the chips by the cement-containing substance.
[0035]
Further, since the cement contained in the cement-containing material is mainly composed of a lime salt of silicic acid, alumina, iron oxide and a small amount of an alkali compound, it becomes a soluble lime salt by an acid and thus has a predetermined decomposition function. In particular, strong inorganic acids such as sulfuric acid, hydrochloric acid, and nitric acid neutralize calcium hydroxide in cement, and decompose to lime silicates and alumina salts, which are relatively stable cured products. In addition, salts such as sodium, magnesium and calcium sulfates react with calcium hydroxide in the cement to form a soluble substance, or swell by taking a large amount of crystal water to decompose the cement.
[0036]
Specifically, the cement-containing substance may have any form as long as calcium hydroxide is generated by a hydration reaction between cement and water, and cement milk (cement paste) composed of cement and water. Any of fresh mortar made of cement, water and fine aggregate or fresh concrete made of cement, water, fine aggregate and coarse aggregate may be cured by a hydration reaction.
[0037]
It is arbitrary what kind of material the chip is made of, but when the chip is made of wood chips, the chip is also subjected to the action of decomposition by microorganisms. Combined with the action, the drainage neutralization plate will surely decompose over time, and the vegetation-based trees sprayed on it will be cracked in the decomposed drainage neutralization plate and hollow spaces generated by microbial decomposition Elongate roots and grow like normal soil.
[0038]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a slope greening method according to the present invention will be described with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.
[0039]
FIG. 1 is a flowchart showing a procedure for carrying out the slope greening method according to the present embodiment, and FIG. 2 is a view showing a drainage neutralization plate used in the slope greening method. As can be seen from these figures, in the slope revegetation method according to the present embodiment, first, as shown in FIG. It fixes to the surface 12 (step 101).
[0040]
As shown in FIG. 2 (b), the drainage neutralizing plate 1 is made by solidifying wood chips 2 which are a large number of chips with cement paste 4 which is a cement-containing material so that gaps 3 are formed between the wood pieces. The acidic water that has entered from one side is neutralized with calcium hydroxide contained in the cement paste 4, and the acidic water is passed through the gap 3 in the in-plane direction (arrow (a) in the figure). Direction) can be drained.
[0041]
In other words, the drainable neutralizing plate 1 has wooden pieces 2 solidified together with cement paste 4 which is a cement-containing substance, and therefore has a predetermined strength as a plate in transportation, arrangement, etc. No trouble is caused, and since the gap 3 is formed between the pieces of wood 2, there is no fear of cracking due to the driving of the nail 41.
[0042]
Further, the drainable neutralizing plate 1 is configured such that the cement paste 4 is neutralized with acidic water and is transferred from a strong alkali to a weak alkali or neutral, and is decomposed accordingly.
[0043]
In order to manufacture the drainable neutralizing plate 1 used in the present embodiment, for example, a piece of wood 2 having a size of several centimeters, cement, and a small amount of water are mixed in a mixer and the cement paste is entangled on the surface of the piece of wood 2. In such a state, it is put into a plate-like product working form, cured in a required pressure state and formed into a plate shape, and then dried appropriately.
[0044]
Here, if there is too much cement paste, the gap 3 in the produced drainable neutralizing plate 1 will be reduced, and if there is too little cement paste, the strength for consolidating the pieces of wood 2 will be insufficient and the plate-like body will be formed. In view of this viewpoint, the amount of cement and water is appropriately determined.
[0045]
When fixing the drainage neutralization board 1 to the slope 12 of the acidic soil 11, the placement area 42 necessary and sufficient to plan greening of the slope 12 by placing the drainage neutralization board is shown in FIG. As shown in a), a plurality of drainage neutralizing plates 1 may be arranged in advance according to the arrangement area.
[0046]
Here, according to the figure, the arrangement | positioning area | region 42 where the drainage neutralization board 1 is arrange | positioned becomes an area | region inclined with respect to the slope of the slope 12, but this is acidic soil, ie, acidic This is because it is assumed that the strata from which the material is eluted are exposed to the ground in an inclined state.
[0047]
In addition, about the method of arrangement | positioning to the arrangement | positioning area | region 42, as shown in FIG.4 (b), you may make it arrange | position the some drainage neutralization board 1 without a gap, but it depends on the shape and width of the arrangement | positioning area | region 42. In some cases, it may be necessary to cut the drainable neutralizing plate 1 on site in accordance with the arrangement region 42.
[0048]
In such a case, the drainage neutralizing plates 1 may be arranged so that a predetermined distance d is formed between them as shown in FIG. According to such a configuration, by appropriately adjusting the gap d between the drainage neutralization plates 1 according to the shape and width of the arrangement region 42, it is not necessary to cut the drainage neutralization plate 1 on site, In addition to being able to save labor, it is possible to prevent the end material of the drainage neutralizing plate 1 that is not used from being generated, and to eliminate waste of materials.
[0049]
In any case, in predetermining the arrangement region 42 where the drainage neutralization plate 1 is arranged, the distribution range of the acidic soil to be greened is grasped, and the entire distribution range of the acidic soil can be covered. It is desirable to set.
[0050]
Next, as shown in FIG. 5, drainage bodies 44 and 44 as drainage and drainage means are installed on the outer sides of the diagonally upper edge and the diagonally lower edge in the longitudinal direction of the arrangement region 42 where the drainage neutralizing plate 1 is arranged. (Step 102).
[0051]
The drainage body 44 can be appropriately selected from commercially available drainage materials and drain materials. For example, several drainage pipes are arranged in parallel, and the drainage pipes are laid with a water permeable sheet such as a nonwoven fabric and a predetermined one. What was comprised between the water impervious sheets can be used. In the case of such a drainage body, the water-impervious sheet may be placed on the top and the water-permeable sheet in contact with the slope 12.
[0052]
Further, as shown in the figure, the drainage bodies 44 and 44 may be installed adjacent to both edges of the arrangement region 42.
[0053]
Next, as shown in the figure, a lath 43 as a mesh body is overlaid on the drainable neutralizing plate 1 and the lath is fixed to the slope 12 (step 103).
[0054]
When the lath 43 is overlaid on the drainage neutralization plate 1 in this way, it becomes possible to arrange the drainage neutralization plate 1 on the slope 12 in a stable state in combination with the fixing action of the nail 41.
[0055]
For example, the lath 43 may be fixed by driving an anchor pin into the slope 12 so as to penetrate between the drainage neutralization plates 1 or through the drainage neutralization plate 1. The lath 43 not only enhances the placement stability of the drainage neutralization plate 1 but also holds the vegetation base 13 so that it does not flow down when the vegetation base 13 is sprayed as will be described later. At the same time, it also serves to reinforce this in the cured state.
[0056]
Next, as shown in FIG. 6, the vegetation base 13 is sprayed on the drainable neutralizing plate 1 with a thickness of, for example, several centimeters (step 104).
[0057]
The vegetation base 13 may be composed of an aqueous slurry obtained by stirring and mixing plant seeds, fertilizer, water, a chip material, an adhesive, and the like.
[0058]
Thus, when the drainage neutralization board 1 is arranged on the slope 12 of the acidic soil 11 and then the vegetation base 13 is sprayed on the drainage neutralization board, due to rainfall or the like as shown in FIG. Even if acidic water has leached from the acidic soil 11, the acidic water does not directly enter the vegetation base 13, but first enters the drainage neutralization plate 1.
[0059]
And since the acidic water which permeated the drainage neutralization board 1 is neutralized by the neutralization effect | action of this drainage neutralization board, even if it penetrate | invades into a vegetation base after that (FIG. 7 broken line direction), a vegetation base The pH environment at 13 has no adverse effect.
[0060]
Rather, the acid water that has entered the drainage neutralization plate 1 is neutralized, and a part of the acid water remains in the drainage neutralization plate due to surface tension or the like. Intrusion into the vegetation base and the role of supplying appropriate moisture to the vegetation base, it is possible to suppress the drying of the vegetation base 13.
[0061]
Further, even if the acidic water that has entered the drainable neutralizing plate 1 from the acidic soil 11 cannot be completely neutralized and remains weakly acidic, the acidic water is discharged from the drainable neutralizing plate 1 through the gap 3. The action drains in the in-plane direction within the cross section (see the solid line direction in FIG. 7, see FIG. 2 (a)), and eventually reaches the buttock side without entering the vegetation base 13. Therefore, there is no adverse effect on the growth of trees on the vegetation base 13.
[0062]
Furthermore, since the drainage bodies 44 and 44 are installed outside the arrangement area 42 of the drainage neutralizing plate 1, water due to rain or the like is collected by the drainage body 44 on the upper edge side as shown in FIG. It is drained and does not flow into the arrangement area 42. Even if some of the acidic water leached from the slope 12 of the arrangement region 42 is not drained in the in-plane direction of the drainage neutralization plate 1 due to the slope of the slope, the acidic water is The water is collected and drained by the edge side drainage body 44 and does not flow out of the arrangement area 42.
[0063]
On the other hand, while the neutral environment plate 1 neutralizes the acidic water from the acidic soil 11, the pH environment gradually shifts to weak alkali and neutral, and the cement paste 4 decomposes accordingly. And since the piece 2 of wood solidified with this cement paste 4 falls apart, the drainage neutralization board 1 whole decomposes | disassembles eventually.
[0064]
In addition, the piece of wood 2 that has been disassembled due to the decomposition of the cement paste 4 is also subjected to a decomposition action by microorganisms in the soil, so that the drainable neutralizing plate 1 is reliable over time in combination with the decomposition action of the cement paste 4 described above. Disassembled into
[0065]
Therefore, as shown in FIG. 9, the tree 31 that grows on the vegetation base 13 penetrates the decomposed drainable neutralizing plate 1 and extends the root to the underlying soil 11a, and continues to grow smoothly. In addition, the soil 11 which was acidic at the time of the vegetation base 13 being sprayed has moved to the non-acidic environment soil 11a by the neutralization action described above. It can be grown in a suitable pH environment.
[0066]
In addition, since the drainage neutralization board 1 is mostly the piece of wood 2, after receiving the decomposition | disassembly effect | action of microorganisms, it integrates with the soil 11a.
[0067]
As described above, according to the slope revegetation method according to the present embodiment, the acid water that has entered from the surface on the acidic soil 11 side is neutralized by the drainage neutralization plate 1 and the acid water is drained. Within the cross section of the neutralizing plate 1, it can be drained in the in-plane direction.
[0068]
Therefore, even if acidic water has leached from the acidic soil 11 due to rainfall or the like, the acidic water is neutralized by the neutralizing action of the drainable neutralizing plate 1 and the acidic water is not neutralized but is weakly acidic. However, the acidic water can be drained in the in-plane direction within the cross section by the drainage action of the drainable neutralizing plate 1, and the vegetation base 13 is blocked from the acidic soil 11, in other words, the acidic water Can be prevented from entering the vegetation base 13 beforehand.
[0069]
On the other hand, since the drainable neutralizing plate 1 is configured to be decomposed by acidic water, the drainable neutralizing plate gradually shifts to a neutral environment while neutralizing the acidic water. Thus, the tree 31 that is decomposed and grows on the vegetation base 13 enters the soil 11a that has become a neutral environment while utilizing the cracks of the decomposed drainable neutralizing plate 1 and the voids generated by the decomposition. Elongate its roots.
[0070]
Therefore, it becomes possible to grow the tree 31 growing on the vegetation base 13 smoothly while maintaining the appropriate pH environment and extending the root of the tree 11 to the soil 11a. Can be done.
[0071]
Further, according to the slope greening method according to the present embodiment, the drainage neutralization plate 1 is fixed to the slope 12 of the acidic soil 11 using the nail 41, and the fixed drainage neutralization plate 1 is lathed. 43, and the lath is fixed to the slope 12, so that the drainage neutralizing plate 1 is double-fixed by both the nail 41 and the lath 43, and thus the drainage neutralization is performed. It is possible to arrange the plate on the slope 12 in a stable state.
[0072]
Therefore, especially in Japan, steep slopes often appear in cut work from the viewpoint of effective use of land, but according to the slope revegetation method according to this embodiment, slopes 12 of acidic soil 11 are obtained. Even if the slope is steep, the drainage neutralization plate 1 is not likely to slide down. Therefore, even if the drainage neutralization plate 1 is not stacked in order from the bottom of the method, the drainage neutralization plate 1 should be placed only in the placement area 42 where greening is desired. Therefore, not only can the green soil be surely green even if the acidic soil 11 has a steep slope, but the number of drainage neutralization plates 1 required at that time can be minimized. It becomes possible and it becomes a greening method with excellent economic efficiency.
[0073]
Moreover, according to the slope greening method which concerns on this embodiment, since the drainage body 44,44 was installed in the upper edge and the lower edge side among the arrangement | positioning area | regions 42 of the drainage neutralization board 1, it is due to rain etc. It is possible to prevent water from flowing into the arrangement area 42, to suppress the elution of acidic substances in the arrangement area, and to collect and drain acidic water that has leached from the slope 12 of the arrangement area 42. It becomes possible to prevent the outflow from the arrangement area, and there is no concern of acidifying the surrounding soil.
[0074]
Moreover, according to the slope greening method which concerns on this embodiment, since the chip | tip was comprised with the wood piece 2, this wood piece will be decomposed | disassembled by microorganisms and combined with the decomposition | disassembly effect | action of the cement mentioned above, the drainage neutralization board 1 Can be reliably decomposed over time. In addition, there exists an effect that the drainage neutralization board 1 can be reduced in weight by making the chip | tip into the piece of wood 2. FIG.
[0075]
In this embodiment, the wood piece 2 is used as a chip. However, if the decomposition action of the cement by acid is sufficient to extend the root of the tree, it is not necessary to use the wood piece 2 and gaps can be formed. Any material can be used as long as it is a chip. For example, it is also possible to use concrete glass whose particle size is adjusted with a crusher to an appropriate particle size.
[0076]
Although not particularly mentioned in the present embodiment, when the drainage neutralization plate 1 is arranged as shown in FIG. 4C, the sprayed vegetation base 13 is discharged from the mesh of the lath 43 to the drainage neutralization plate 1. Since it penetrates into the gap d between each other and hardens in such a state, the drainage neutralizing plate 1, the slope 12 and the vegetation base 13 are integrated together with the fixing action of the nails 41 and laths 43 described above. Even if the surface is steep, the placement stability of the drainable neutralizing plate 1 can be further improved.
[0077]
However, in the case of adopting such an arrangement method, the drainage neutralization plate 1 is prevented so that the vegetation base 13 does not pass through the mesh of the lath 43 and fill the gap d of the drainage neutralization plate 1. , 1 and the mesh size of the lath 43 are appropriately set. In this way, the situation is such that the acidic water from the slope 12 directly enters the vegetation base 13 filled in the gap d of the drainage neutralization plate 1 and the growth of trees on the vegetation base is inhibited. In addition to being able to avoid it, the gap d remains as a gap, so that the drainage of acidic water can be promoted.
[0078]
Although not particularly mentioned in the present embodiment, because the slope of the slope of the acid soil to be greened is a gentle slope, the drainage neutralization plate is fixed to the slope using a fixing means, Furthermore, when it is not necessary to overlap the mesh body from above and fix the mesh body to the slope, these steps may be omitted.
[0079]
In addition, since the stratum that is acidic soil is almost vertical, if there is no concern about the inflow of rainwater to the arrangement area or the outflow of acidic water from the arrangement area, the drainage bodies 44, 44 are installed. The process may be omitted.
[0080]
Further, although not particularly mentioned in the present embodiment, if the cement pieces alone are insufficient in strength, and the pieces of wood 4 cannot be consolidated together, a solidifying agent may be appropriately added. If it is necessary to improve in terms of fluidity, an admixture may be used as appropriate.
[0081]
In addition, the cement-containing substance of the present invention is not limited to cement paste, and a mortar containing fine aggregate may be used.
[0082]
【The invention's effect】
As described above, according to the slope revegetation method according to the present invention, it is possible to grow a tree growing on a vegetation base smoothly while maintaining an appropriate pH environment and extending its roots in soil. Thus, greening can be performed even in acidic soil.
[0083]
[Brief description of the drawings]
FIG. 1 is a flowchart showing an implementation procedure of a slope greening method according to the present embodiment.
FIGS. 2A and 2B are views of a drainage neutralization plate used in the slope greening method according to the present embodiment, in which FIG. 2A is a perspective view, and FIG.
FIG. 3 is a diagram showing a procedure for performing a slope greening method according to the present embodiment.
FIG. 4 is a diagram showing a procedure for continuously implementing the slope greening method according to the present embodiment.
FIG. 5 is a view showing a procedure for continuously implementing the slope greening method according to the present embodiment.
FIG. 6 is a diagram showing a procedure for continuously implementing the slope greening method according to the present embodiment.
FIG. 7 is a view showing the operation of the slope greening method according to the present embodiment.
FIG. 8 is a view showing the operation of the slope greening method according to the present embodiment.
FIG. 9 is a view showing the operation of the slope greening method according to the present embodiment.
[Explanation of symbols]
1 Drainage neutralization plate
2 Wood chips (chips)
3 gap
4 Cement paste (cement-containing material)
11 Acid soil
12 Slope
13 Vegetation base
41 Nails (fixing means)
42 Placement area
43 Lath (mesh)
44 Drainage body (collection and drainage means)

Claims (2)

A predetermined drainage neutralization plate is placed on a slope of acidic soil, and then a vegetation base is sprayed on the drainage neutralization plate, where the drainage neutralization plate is disposed. The drainage neutralization plate is configured by consolidating a large number of chips with a cement-containing substance so that gaps are generated between the chips. The acidic water that has entered from the side surface is neutralized, the acidic water is drained in the in-plane direction within the cross-section, and the cement-containing substance of the drainable neutralizing plate is decomposed,
The arrangement area is a rectangular area, and the longitudinal direction of the arrangement area is an area that forms a predetermined angle on the slope with respect to the slope direction of the slope. A slope revegetation method, wherein the drainage means is installed on each outer side of the edge.   The slope greening method according to claim 1, wherein the chip is made of wood.

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