JP2003064685A - Countermeasure against steep slope in slope planting method using spraying of plant seedling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a countermeasure against a steep slope in a slope planting method using the spraying of plant seedlings, which enables the extremely proper execution of slope planting using the spraying of the plant seedlings on a steep cut slope or a steep slope of embankment. SOLUTION: A lath gauze 2, which serves as a reinforcing net for the slope, is mounted on the steep cut slope 1. A plurality of vegetative shelves 3, which continue in the lateral direction of the cut slope 1, are installed on the cut slope 1 at prescribed intervals in the direction of inclination of the cut slope 1. The plant seedlings 4 are sprayed with vegetation base soil 5 onto the cut slope 1 from above the lath gauze 2. The plant seedlings 4 are premixed with the soil 5 in a tank by using compressed air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steep slope countermeasure method in a slope revegetation method by spraying plant seedlings, which is particularly suitable for greening on a steep cut slope or an embankment slope. .

[0002]

2. Description of the Related Art As a method for greening a cut slope or an embankment slope formed facing a road, for example, a wire mesh has been installed on the slope, and vegetation containing fertilizer and adhesive is placed on it. A method of spraying plant seeds with the base soil is known.

Further, the present applicant has previously developed a slope greening method by spraying plant seedlings, which sprays plant seedlings mixed with fertilizer or the like in a tank with compressed air on the slopes (see Japanese Patent No. 30889884). ).

[0004]

However, in the conventional slope revegetation method by spraying plant seedlings, if the slope of the slope is too steep, the plant seedlings tend to slide down along with the vegetation base soil, which is empirical. On a steep slope with a gradient of more than 50 °, it was almost impossible to green the plants by spraying them.

[0005] Further, even if it is possible to green, the base soil deposited by spraying is as thin as a few cm due to the steep slope,
Therefore, the seedlings are likely to die in a dry season when there is little rain, and particularly in a place where the slope is very hard such as rock, there is a problem that the plant seedlings die and die due to the significant drying.

The present invention has been made to solve the above problems, and improves and develops the greening method by spraying plant seedlings, which was previously developed by the applicant of the present invention, and especially the greening of a steep slope. It is an object of the present invention to provide a steep slope countermeasure work in a slope revegetation method by spraying plant seedlings that can surely perform the above.

[0007]

[Means for Solving the Problems] A steep slope countermeasure work in a slope greening method by spraying plant seedlings according to claim 1, wherein a plurality of vegetation shelves are provided on the slope at predetermined intervals in the slope direction of the slope. It is characterized in that it is installed, and then the plant seedling mixed with the vegetation base soil in advance in the tank is sprayed on the slope with compressed air.

[0008] Plant seedlings are planted by spraying on the slope as a mixture with vegetation base soil, but the soil on the slope is moderately soft (soil hardness less than 23 mm), and the roots of the plant can be elongated and still well. If it is possible to fertilize and grow plant seedlings, the amount of vegetation base soil may be reduced. Conversely, if the soil on the slope is hard and the fertilizer content is very low, the amount of vegetation base soil should be increased. It is desirable to spray it.

[0009] In addition, after planting, as a general rule, sprinkling and curing are required until the plant seedlings take root, but after that, since water retention agents can be used, basically sprinkling can be omitted unless exposed to abnormal weather. Good.

The vegetation base soil used here is not particularly limited as long as it has high fertility and can grow plant seedlings. Further, as the plant seedling, it is assumed that a plant plant seedling that can be adopted in relatively any region is used, and as its basic seedling, for example, sardine, C. mansii,
Seedlings such as honeysuckle can be used.

As the plant seedling, a cell-molded seedling is used in which a growing tray divided into cells is filled with culture soil, and then a seedling of a vegetatively propagating plant is directly placed and rooted. Cell-molded seedlings are used after being taken out from the growing tray, and because they retain soil in the roots, they can be stored for a long period of time, have good growth after spraying, and have the advantage that they can be mass-produced in a short period of time. There is. It should be noted that it is advisable to mix several types of plant seedlings for planting in case of withering and the like due to bad environment.

Further, several kinds of plant seedlings are mixed with the vegetation base soil at a predetermined mixing ratio in advance, and are mixed with the vegetation base soil by compressed air in the tank. Differently, the plant seedlings can be mixed without being damaged, and then the mixture is sprayed onto the slope, so that the plant seedlings can be easily constructed and the plant seedlings grow well.

When the plant seedlings and the vegetation base soil are mixed with compressed air in the tank, water can be added to prevent the plant seedlings from being further damaged.

The vegetation shelf is a shelf for preventing the vegetation base soil sprayed on the slope and the plant seedlings from slipping down. Therefore, the structure is not particularly limited as long as it can fulfill its purpose, but the installation interval and The depth of each shelf may be determined according to the slope of the slope.

If necessary, welding wire mesh, lath wire mesh, or geotextile may be attached to the slope as a reinforcing net to more reliably prevent the vegetation base soil and plant seedlings from sliding off.

The steep slope countermeasure work in the slope greening method by spraying plant seedlings according to claim 2 is the steep slope countermeasure work in the slope greening method according to claim 1, wherein only the vegetation base soil is on the slope. Is sprayed, and the plant seedling mixed with the vegetation base soil is sprayed on it.

When the slope is rocky and there is almost no fertilizer, or when it is very hard, only the vegetation base soil is first sprayed to a predetermined thickness, and then the plant seedlings and vegetation base soil are mixed on it. By spraying, it is possible to prevent the plant seedlings from dying and to significantly increase the survival rate of the plant seedlings.

[0018] In addition, if seeds of the plant are additionally mixed in the vegetation base soil, if necessary, the sprayed plant seedlings are rooted, and the bare land (the plant seedlings are covered until the slope is covered with the plant seedlings). Weeds can be suppressed by minimizing the amount of unplanted parts). In this case, the seed of the plant may be one kind.

[0019] The steep slope countermeasure work in the slope greening method by spraying plant seedlings according to claim 3 is the slope greening method according to claim 1 or 2, in which the vegetation shelf is a plate-shaped member and this plate-shaped member. It is characterized by being formed from a plurality of support members for supporting the. In this case, for example, a welded wire mesh or lath wire mesh formed in a strip shape can be used as the plate member, and a steel rod or the like can be used as the support member.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION FIGS. 1 to 3 show an example of a slope surface greened by a greening method according to the present invention. In the figures, a steep cut slope 1 is used as a reinforcement net for the slope. A wire mesh 2 is attached to the entire cut slope 1.

Further, a plurality of vegetation shelves 3 continuous in the lateral direction of the cut slope 1 are installed at predetermined intervals in the gradient direction of the cut slope 1 from above the lath wire net 2. Furthermore, lath wire mesh 2
A plant seedling 4 is planted by spraying as a mixture with the vegetation base soil 5 on the cut slope 1 from above. Then, with the passage of time, the plant seedling 4 is rooted on the vegetation base soil 5 and grows, whereby the cut slope 1 is greened over the entire cut slope 1.

Each of the vegetation shelves 3 has a plurality of steel rods 6 and 6 projecting from the cut slope 1 as supporting members in the lateral direction of the cut slope 1 at predetermined intervals, and the steel rods 6 and 6. As a plate-shaped member, a mesh plate 7 continuously spanned in the lateral direction of the cut slope 1 is provided therebetween.

At the upper end of each steel rod 6, a hook 6a which stands up on the mountain side of the cut slope 1 for holding the edge of the mesh plate 7 is held.
Are formed. Further, each steel rod 6 is driven to a predetermined depth almost perpendicularly to the cut slope 1, and a portion 6b protruding from the cut slope 1 is placed on the net plate 7 (hereinafter referred to as "placement part 6b"). )It has become.

The mesh plate 7 is formed of a welded wire mesh, lath wire mesh or the like in the form of a strip plate, and a plurality of steel rods 6 and 6 adjacent in the lateral direction.
Although not particularly shown, a water-permeable mat is placed on the upper side or the lower side of the mesh plate 7 so as to be stacked continuously on each of the mounting portions 6b.

In this case, since the hooks 6a are formed at the upper ends of the steel rods 6, the net plate 7 is securely fixed on the mounting portions 6b of the steel rods 6.

As the plant seedlings 4, seedlings such as Pleurotus cornucopia L., C. vulgaris, and Pleurotus cornucopiae are mixed with the vegetation base soil 5 at a suitable mixing ratio.

Then, the plant seedlings 4 are well mixed with the vegetation base soil 5 in the tank by compressed air, and then the vegetation base soil 5 is mixed.
It is sprayed on the cut slope 1 by compressed air as a mixture with.

Next, an example of a steep slope countermeasure work in the slope greening method by spraying plant seedlings according to the present invention will be described step by step.

First, when weeds are growing on the slope to be revegetated, the herbicide is sprayed, and the slope is pretreated by cutting it off, or the topsoil is stripped off.

Next, a lath wire net 2 is attached as a reinforcing net for the slope on the slope where the topsoil has been stripped off (hereinafter referred to as “cut slope 1”). The lath wire net 2 is not always necessary.

Next, the vegetation shelf 3 is installed on the cut slope 1 from above the lath wire net 2. To install the vegetation shelves 3, first, steel rods 6 are driven into the slope 1 as support members in the lateral direction of the slope 1 at predetermined intervals. In this case, each steel rod 6 is driven to a predetermined depth, and the portion protruding from the slope 1 is used as the mounting portion 6b of the mesh plate 7.

Next, the mesh plate 7 is bridged between the mounting portions 6b, 6b of the steel rods 6, 6 that are laterally adjacent to each other.

Next, the plant seedlings 4 and the vegetation base soil 5 are mixed in advance at a predetermined mixing ratio, and well mixed by compressed air in the tank. Using a machine, blow to the desired thickness with compressed air.

In this case, if the soil on the cut slope 1 is relatively soft and well fertilized so that the rooting and growth of the plant can be easily performed, the vegetation base soil 5 may be mixed in a small amount. When the cut slope 1 is rocky and there is almost no fertilizer, or when it is very hard, only the vegetation base soil 5 is first sprayed to a predetermined thickness, and then the plant seedling 4 and the vegetation base soil 5 are sprayed on it. The mixture shall be sprayed.

[0035]

The present invention is as described above,
In particular, multiple vegetation shelves are installed on the slope at predetermined intervals in the slope direction of the slope, and plant seedlings are sprayed onto the slope as a mixture with the vegetation base soil to plant, so the slope is steep. However, since the planted plant seedlings can be prevented from sliding down, planting and growing of plant seedlings can be carried out very suitably even on a steep slope, and reliable greening is possible.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an example of a slope greened by a greening method of the present invention.

FIG. 2 is a partial cross-sectional view showing an example of a slope surface greened by the greening method of the present invention.

3A is a perspective view of a steel rod, and FIG. 3B is a partial perspective view of a mesh plate.

[Explanation of symbols]

1 cut slope 2 Lath wire mesh (reinforced net) 3 vegetation shelves 4 plant seedlings 5 vegetation base soil 6 Steel rod (support member) 6a hook 6b Placement part 7 Mesh plate (plate-shaped member)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Fukushima             67 Ishii, Hidaka Town, Kinosaki District, Hyogo Prefecture (72) Inventor Motoji Moriyama             1-13-1 Yamashita, Okayama City, Okayama Stock             Company Omotogumi (72) Inventor Enmichi Takenori             1-13-1 Yamashita, Okayama City, Okayama Stock             Company Omotogumi (72) Inventor Noriaki Miyoshi             1-13-1 Yamashita, Okayama City, Okayama Stock             Company Omotogumi (72) Inventor Yujiro Izumo             1-13-1 Yamashita, Okayama City, Okayama Stock             Company Omotogumi (72) Inventor Osamu Yoshida             84 Hokuharazuka, Hagiwara, Ichinomiya, Aichi F-term (reference) 2D044 DA25 DA36 DB41

Claims (3)

[Claims] 1. A plurality of vegetation shelves are installed on a slope at predetermined intervals in a gradient direction of the slope, and then plant seedlings mixed with vegetation base soil in the tank are sprayed onto the slope by compressed air. A steep slope countermeasure work in the slope greening method by spraying plant seedlings. 2. The steep slope countermeasure work in the slope greening method by spraying plant seedlings according to claim 1, wherein the plant seedlings mixed with the vegetation base soil are sprayed on the vegetation base soil. 3. The slope greening by spraying a plant seedling according to claim 1 or 2, wherein the vegetation shelf is formed of a plate-shaped member and a plurality of support members supporting the plate-shaped member. Construction work for steep slopes.