JPH10168888A - Construction method for greening slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a complicated work and shorten the construction period by partitioning a sheet-like bag body with injection ports being provided thereon, respectively, constituting a slope form by concrete blocks thereon, and injecting seed, fertilizer and soil to bag bodies arranged therein. SOLUTION: A sheet-like bag body 1 having a wide area for several ten sections of a slope form is welded or sewed to form bag bodies 12 divided into a number of sections by linear weld parts 11. Each bag body 12 has an injection port, and the dimension of mesh of the sheet bag body 1 is set to a size such that penetration of water is allowable, but outflow of earth grains is impossible. The sheet-like bag body 1 is laid on a slope, concrete blocks 2 made into a long columnar form are set thereon to constitute a slope form over the whole surface. A greening material in which seed, fertilizer and soil are integrated is injected through the injection part of each bag body 12. Thus, the works of carrying, setting and fixing to the slope form every bag body are eliminated, and the construction period can be significantly shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope greening method.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of protection of the natural environment, it has been required and implemented to green the space between concrete concrete frames. As a construction method, a method is adopted in which a slope frame a is constructed on a slope, and a greening bag b is installed on the ground surface exposed between the slopes a. This method uses soil, fertilizer,
A method of putting a bag b filled with seeds between the legal frames a (FIG. 4), or placing an uninjected sheet-like bag b between the frames a, and then placing soil, fertilizer, seeds, etc. in the bag b. (FIG. 5). Then the germinated buds and roots are sack b
It spreads its eyes and grows to the outside, enabling stable greening.

[0003]

However, the conventional slope greening method as described above has the following problems. <B> The bag b installed between the frames a is independent of the legal frame a. For this reason, before the seeds in the bag b germinate and reach the root, rainwater may penetrate from between the legal frame a and the bag b and gradually erode the ground. In rivers, it is necessary to lay a suction mat in advance to prevent erosion of the ground. <B> Since the frame a and the bag b are separated, if the frost column of the ground pile repeatedly freezes and melts in the cold season, the frame a and the bag b repeat their own lifting and lowering, and only the bag b is An accident such as falling from the slope occurs. <C> In order to prevent the movement of the bag body b, an operation of driving a large number of pins d per bag and sewing the ground to the ground,
Alternatively, it is necessary to perform an operation of fixing to a legal frame. The operation of driving the pin d in such a large amount places a heavy burden on the operator. <D> Since it is difficult to proceed simultaneously with the construction of the legal frame a and the installation of the bag body b, the construction period is likely to be long.

[0004] The present invention has been made to solve the above-described conventional problems, and enables rapid construction.
It is another object of the present invention to provide a slope revegetation method capable of stably holding down the ground before the roots reach.

[0005]

Means for Solving the Problems In order to achieve the above object, the slope greening method according to the present invention lays a group of sheet-like bags before inflation on the slope and lays the laid sheet. The method is characterized by a method of greening a slope, in which a lawn is formed on the upper surface of the shape, and thereafter, a material for greening is injected into the bag exposed between the frames of the lawn.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the slope greening method of the present invention will be described below.

<A> A sheet-like bag. In the method of the present invention, a sheet-like bag 1 having a large area is used. In this method, a part of two sheets is welded or stitched linearly and divided into a number of sections. Each area defined by the linear connecting portion 11 is a bag 12
, And an inlet is provided for each bag 12. The sheet-like bag 1 has a large area corresponding to several tens of sections of the legal frame. The sheet-like bag 1 is made of a coarse material. The size of the mesh is such that water can enter, but soil particles cannot escape. The position of the connecting portion 11 coincides with the position of a legal frame such as the concrete block 2 described later.

<B> Laying of the sheet-like bag 1. The sheet-like bag 1 having the above-described configuration is laid on the slope. In that case, the sheet-like bag 1 is laid in a flat state before being expanded. For this purpose, for example, the sheet-shaped bag body 1 wound in a cylindrical shape is gradually scattered from the upper end of the slope to be spread on the slope. Although the sheet-like bag 1 has a large area,
Since a normal frame is arranged on the upper surface as described later, it is not particularly necessary to fix with a large number of pins as in the prior art, and the operation is extremely easy. Note that the bag 1 may be of a type in which a plurality of independent bag portions are formed by dividing the concrete block 2 of the legal frame into a plurality of sections, or a type that is not divided.

<C> Construction of the legal framework. Laying on the slope. Sheet-like bag body 12 before inflation
A legal frame is formed on the entire upper surface of. For example, a concrete block 2 is installed as a legal frame. The concrete block 2 is a long columnar member, and has a structure in which a legal frame can be formed by combining the concrete blocks. Other known methods can be adopted as a method of constructing a legal framework. For example, there is a method in which concrete or mortar is sprayed between wire mesh forms to form a legal frame. In that case, a formwork in which a wire mesh or the like is erected in parallel is arranged on the upper surface of the sheet-like bag 1, and concrete is sprayed between the formworks. Alternatively, a formwork for a legal form may be assembled on the upper surface of the sheet-like bag body 1, and concrete may be cast inside the formwork to form a legal form.

<D> Injection of greening material. The bag 12 of the sheet-like bag 1 is exposed between the frames. Since each bag has an inlet, a greening material 3 is injected from the inlet. Greening material 3
It is a material in which seeds, fertilizer, soil and the like are integrated, and can be pumped from a road below a slope by the pressure of a pump. In the case of a type in which a large number of independent bag portions are formed by dividing the concrete block 2 between the concrete blocks into a plurality of pieces, the shape shown in FIG. 2 is exhibited, and in the case of a type not divided, as shown in FIG. It has a unique shape. The greening material 3 is injected into the bags 12 exposed between all the legal frames, and the preparation for greening is completed.

[0011]

[Effects of the present invention] The following effects can be obtained from the slope greening method of the present invention as described above. <A> The entire surface of the ground is covered with the sheet-like bag 1 and is not divided as in the related art. Therefore, there is no effect that rainwater enters from the space between the lawn frame and the bag body 12 and the slope is gradually collapsed. <B> Especially when used for revetment of rivers, if the bag is divided as before, water from the river repeatedly comes in and out from the space between the sill and the bag, and as a result, the soil on the slope is It sucks out and collapses. Conventionally, therefore, it has been necessary to lay a suction mat in advance. However, in the method of the present invention, the entire slope is coated. Therefore, even when the water level of the river rises or falls, the phenomenon that water invades the inside and sucks the soil of the ground does not occur. <C> Before the roots of the vegetation firmly dig into the ground, there is a possibility that the law frame will move up and down due to frost heaving during the cold season. For this reason, in the conventional structure in which the lawn frame and the bag for greening are separated, the phenomenon that the lawn frame and the baggage move up and down separately and the edge is cut, causing the bag to fall down the slope doing. However, according to the method of the present invention, the entire surface is covered with the sheet, and the entirety moves up and down as a whole, so that there is no occurrence of an accident in which only the bag body 12 separates and falls. <D> In a structure in which the bags are independent of the legal frame, a complicated operation of fixing each bag with several anchors is required. However, in the method of the present invention, since the entire surface is covered with the integral continuous sheet-like bag body 1, it can be held down by the weight of the legal frame without requiring a large number of anchors. Therefore, it is possible to omit the work of driving a large number of anchors and the work of fixing the bag body to the legal frame as in the related art, and it is possible to greatly shorten the construction period. <E> In the conventional method, after the entire frame is completely completed, put a bag filled with soil, fertilizer, and seed into the frame and place it in the frame, or carry in the bag and install it. A process of performing an injection operation. Therefore, it was not possible to carry out a plurality of operations in duplicate. However, according to the method of the present invention, the sheet-like bag 1 that covers the entire surface is first laid, so that the loading and setting work of the bag as in the conventional case is unnecessary, and the one-section legal frame is completed. Each time, the greening material 3 can be injected. Since such overlapping work can be performed, the construction period can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of a slope greening method according to the present invention.

FIG. 2 is a sectional view thereof.

FIG. 3 is an explanatory view of another embodiment of the present invention.

FIG. 4 is an explanatory view of an example of a conventional construction method.

FIG. 5 is a sectional view of a conventional construction state.

Claims (4)

[Claims] 1. A group of sheet-like bags prior to inflation on a slope is laid, and a law frame is formed on the laid sheet-like upper surface. A greening method for slopes that involves injecting greening materials 2. A group of sheet-like bags before inflation on a slope is laid, a concrete block is arranged on the laid sheet-like upper surface to form a law frame, and thereafter, between the frames of the law frame. A greening method on the slope, in which a greening material is injected into the exposed bag. 3. A sheet-shaped bag group before being inflated on a slope is laid, concrete is sprayed on the laid sheet-like upper surface to form a law frame, and thereafter, between the frames of the law frame. A greening method on the slope, in which a greening material is injected into the exposed bag. 4. A group of sheet-like bags prior to inflation on a slope is laid, a formwork is assembled on the laid sheet-like upper surface, concrete is cast therein, and a lawn is formed. The greening method on the slope is performed by injecting a greening material into the bag exposed between the frames.