JPH01163319A - Slope stabilization work - Google Patents

Abstract

PURPOSE:To obtain a slope stabilization work suitable for long-term vegetating work at low cost by attaching a small long vegetating aid containing a slow- acting fertilizer to a slope frame. CONSTITUTION:A vegetating aid containing slow-acting fertilizer is confined in a water-permeable beg 2 or connected in a rosary form to form a small and long vegetating aid A. The aids A are attached to the cross or oblique frame panels of a slope frame 32 constructed on slope. Uniform fertilizer application can be attained simply by attaching such a small and long slow-acting fertilizer to the slope frame.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a slope stabilization method.

[Conventional technology]

In order to stabilize slopes over the long term, a method often used is to construct a legal framework and fill the width of the legal framework with vegetation sandbags for greening. Recently, a method has been used in which large grains of slow-release fertilizer are placed in the sandbags in advance, and the fertilizer is expected to have a long-term effect for three to four years.

[Problem that the invention seeks to solve]

According to this method, the soil is contained within the width of the sandbag, so even if the slope is steep, the soil will not be washed away by rainwater, etc., and the slow-release fertilizer inside the sandbag will help the plants grow. Organisms can grow stably over a long period of time, and can eventually be used as the basis for the natural cultivation of local species.

However, although this method is very good in terms of stabilizing soil and long-term greening, it is often not possible to use sandbags for economic reasons because using sandbags leads to a significant increase in cost. The invention solves these problems,
The aim is to provide an inexpensive and suitable method for large-scale, long-term afforestation.

[Means to solve problems]

In order to solve this problem, the present invention encloses a greening aid containing at least slow-release fertilizer in a water-permeable bag, or connects granular greening aids in a string shape. Forms a long and narrow greening aid. This elongated greening auxiliary material is attached to the frame boards in the transverse or diagonal direction of the slope frame constructed on the slope.

[Effect]

With this structure, the slow-release fertilizer is leached out by rainwater and brings fertilizer to the soil inside the frame, helping to grow plants.

Recently, even on slopes where the ground has very little fertilizer content, such as whitebait and masa, there are many cases where soil generated on site is used as soil, and the plants that have taken root die back in six months to a year and are protected by the plants. As a result, the soil is washed away by rainwater, making it impossible to stabilize the slope.

According to the method of this invention, the slow-release fertilizer has a long-term stagnation effect for 3 to 4 years, so even in poor soil, there is no concern that plants will wither and grow stably. , local species can form the basis of natural vegetation.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

As shown in FIG. 1, a plurality of large slow-release fertilizers 1 formed into blocks are sealed at predetermined intervals in an elongated bag 2 made of a sheet-like material with water permeability. form. In order to keep the fertilizer at predetermined intervals, the elongated bag is divided into smaller bags by partitions 21.

Steel frame plate 3 with a large number of water holes 31 as shown in FIG.
A stacked lattice-like slope 3 as shown in Fig. 3 is constructed on the slope 4, and a pile of frame boards 32 installed transversely on the slope ( The above-mentioned long fertilizer bag is installed along the line. Next, as shown in FIG.

Slow-release fertilizers used in this invention are not particularly specified, but include large-grain molded fertilizers made by Mitsubishi Kasei Co., Ltd. whose main ingredient is isobutylidene diurea, and small-grain coated compound fertilizers made by Chisso Asahi Fertilizer Co., Ltd. Controls and the like are suitable for this purpose.

Slow-release fertilizers may be used alone, or may be mixed with immediate-release compound fertilizers, soil conditioners, etc., and sealed in water-permeable bags.

As a legal framework, it is more preferable to use cloth-stacked fertilizer bags because they can be stabilized simply by placing the fertilizer bags next to each other.

In the case of the diagonal lattice-shaped legal frame 30 for vertical stacking, as shown in FIG. It is convenient to use this method.

In the case of a concrete frame without water holes in the frame plate, as shown in Figure 6, after applying 5 mounds of soil, remove the frame plate 3.
It is convenient to lay the long fertilizer bag A under the container 2. A hook pin 33 may be used to prevent it from falling off.

〔effect〕

Since the present invention is configured as described above, it has the following features.

■ Slow-release fertilizers are formed into elongated, swollen shapes, so
Just by attaching this to the cultivation frame, you can apply fertilizer evenly.

In particular, in the case of a piled-up legal frame, construction is extremely simple because it is only necessary to install it on the mountain side of the frame board.

■ Each side of the legal frame is 1 to 1.5 m, and by attaching slow-release fertilizer to each frame board, the eluted fertilizer is evenly distributed over the soil, allowing for uniform greening.

■ Construction costs are low, so the cost is only the cost of the fertilizer added to the traditional method of construction, making it cheaper than the traditional method of using sandbags.

In particular, in the case of a frame plate with a large number of water holes, it is convenient to simply place the fertilizer on the mountain side of the frame plate, and the fertilizer will flow together with rainwater to the soil below through the water holes.

■ Fertilizer effect can be expected for 3 to 4 years without additional fertilization, so plants can be grown stably over a long period of time, which in turn helps stabilize slopes over a long period of time.

[Brief explanation of the drawing]

Figure 1 is a plan view showing an example of a long fertilizer bag, Figure 2 is a perspective view showing an example of a frame plate, Figure 3 is a front view showing an example of a legal frame, and Figure 84 is a long fertilizer bag being constructed. σjI showing an example of a situation where
FIG. FIG. 5 is a front view showing another example of a situation in which a long fertilizer bag is installed, and FIG. 6 is a side sectional view showing another example of a situation in which a long fertilizer bag is installed.

Claims (1)

[Scope of Claims] Constructed on a slope by enclosing a greening aid containing slow-release fertilizer as an essential element in a water-permeable bag or connecting it in a beaded manner, A slope stabilization method characterized by attaching to the frame boards of the slope in the transverse or diagonal direction.