JP2007224507A - Slope greening method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a slope greening method which prevents a vegetation base material formed on a slope from being eroded and scattered by a rainfall, a wind, etc., properly propagates plants, and makes construction cost lower. <P>SOLUTION: Soil slurry 1 which contains soil, a soil solidifying agent, a natural adhesive, wood chips and seeds, is placed on the slope 2, and solidified so as to be turned into the vegetation base material 3, and the plants are propagated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a slope greening method for greening slopes such as road slopes and slopes.

Plants such as turf and flowers are vegetated and planted on the slopes formed by road construction and land development for the purpose of protection and landscape maintenance.
One such greening method is a spraying method in which a vegetation base mixed with plant seeds, soil conditioner, fertilizer, etc. is sprayed onto the slope with a spraying machine. In the conventional spraying method, a vegetation base is used. In addition, since the function as a stabilizer for the slope base was lacking, the sprayed vegetation base material was sometimes eroded or scattered by rain or wind.

For this reason, wire nets or synthetic resin nets are laid on the vegetation base material to prevent erosion and scattering, but problems such as high costs and insufficient protective effects are required. Was left.
JP 2000-87357 A JP-A-8-41886

  Therefore, the problem in the present invention is that the vegetation base material formed on the slope is not eroded or scattered by rain or wind, the plant breeding is good, and the slope planting method is low in construction cost. There is to get.

To solve this problem,
The invention according to claim 1 is a slope greening method in which a soil slurry containing soil, a soil solidifying agent, a natural adhesive, a wood chip, and seeds is placed on a slope.
The invention according to claim 2 is a slope planting method in which a soil slurry containing soil, a soil solidifying agent, a natural adhesive, wood chips, and seeds is filled in a cloth formwork, and the filling is laid on a slope. .

  According to a third aspect of the present invention, a fabric formwork is fixed to a slope, and the slope is filled with a soil slurry containing soil, a soil solidifying agent, a natural adhesive, wood chips, and seeds in the cloth formwork. It is a construction method.

According to a fourth aspect of the present invention, a reinforcing frame is installed on the slope, and a cloth mold is filled with soil slurry containing soil, a soil solidifying agent, a natural adhesive, wood chips, and seeds inside the reinforcing frame. It is a slope planting method to lay the filled material.
In the invention according to claim 5, a reinforcing frame is installed on the slope, a cloth mold is fixed to the reinforcing frame, and soil, a soil solidifying agent, a natural adhesive, and a wood chip are placed in the cloth mold. This is a slope planting method in which soil slurry containing seeds is poured.

  According to the present invention, since the soil solidifying agent, natural adhesive, and wood chips are contained in the soil slurry that becomes the vegetation base material, the vegetation base material formed by solidifying the soil slurry is strong, It does not collapse due to heavy rain, strong winds, etc., and there is no need to lay a reinforcing net as in the past.

  Further, the natural adhesive dissolves to form voids, and plant roots grow in the voids. Therefore, the growth of the plant is good, and the decayed natural adhesive also becomes a plant fertilizer. In addition, the presence of wood chips increases the strength of the vegetation base material, and the moisture contained in the wood chips can be used for plant growth, which also improves plant propagation.

Moreover, if the reinforcing frame is used, the strength of the entire vegetation base material is increased, and greening is possible even on steep slopes or large-scale slopes.
Furthermore, since various construction methods can be employed in the present invention, an appropriate construction method can be taken corresponding to the shape of the slope, the slope, etc., and the degree of freedom in construction is high.

First, the soil slurry used in the present invention will be described.
This soil slurry contains soil, a soil solidifying agent, a natural adhesive, wood chips, seeds, and water, and is laid and cast on a slope to become a vegetation base material.
The soil is not particularly limited, and soil collected from the construction site and its vicinity, particularly residual soil generated when the slope is leveled, is suitable without requiring any work to be carried in, but is carried from outside the construction site. Soil may be used.
Moreover, it is desirable that the moisture content of the soil is 30 to 100% and the particle size is 5 mm or less, preferably 2 mm or less.

  As the soil solidifying agent, an aqueous liquid having a resin content of 4 to 10 wt% obtained by diluting an aqueous composition having a resin content of 20 to 60 wt% containing a polymer emulsion as a main component with water is used. Various emulsions such as acrylic, vinyl acetate, ethylene-vinyl acetate, and styrene-butadiene are used for the polymer emulsion.

As this soil solidifying agent, among others, a solidifying agent obtained by diluting an aqueous composition containing an acrylic copolymer, an enzyme, and cement disclosed in US Pat. No. 6,695,545 with water has a high vegetation base strength after solidification. In particular, the solidification property is also preferable. The acrylic copolymer constituting this aqueous composition is a copolymer emulsion composed of butyl acrylate, vinyl acetate, and 2-pyropenic acid.
This aqueous composition can be obtained from G.C., for example, Newport Beach, California, USA. M.M. It is sold under the trade name “PX-300” by Boston.

  As the natural adhesive, starch glue, glue and the like are used, and water-soluble starch glue is suitable. It dissolves in rain and becomes a void in the melted portion, so that the roots of the plant can easily enter. Moreover, when it rots, it becomes a nutrient of a plant.

As the wood chip, a wood chip having a length of 5 mm to 50 mm, a width of 1 to 20 mm, and a thickness of 1 to 5 mm obtained by crushing thinned wood, driftwood, building waste wood and waste plywood is used. This wood chip may be dry or wet, and does not require a drying process.
The wood chip functions as a reinforcing material for the vegetation base material after solidification, and can also serve as a water supply source to the plant after solidification by containing water in the slurry.

  As seeds, plants such as turf and vegetation seeds around the site are used as appropriate, but grass with good rooting and good growth potential is preferred.

The mixing ratio of these materials constituting the soil slurry is as follows: 1-20 kg of soil solidifying agent as solid content, 0.1-20 kg of natural adhesive as solid content, and wood chip is absolutely dry with respect to 1 m ³ of soil. 10 to 250 kg, 10 to 1000 g of seeds, and water is determined to have a water content ratio of 60 to 500% as a slurry.

  The production of the soil slurry can be performed at a construction site using a normal drum mixer or the like. Of course, it may be manufactured at a place other than the construction site and carried into the construction site using a mixer truck or the like.

Next, the cloth formwork used in the present invention will be described.
The cloth formwork is a bag formed by stacking two or three or more water-permeable fabrics and stitching the periphery thereof, and soil slurry is poured into the internal space thereof.

  Further, as the water permeable fabric, woven fabric, knitted fabric, nonwoven fabric made of polyester fiber, polyamide fiber, polypropylene fiber or the like, or woven fabric, knitted fabric, nonwoven fabric made of natural fiber such as cotton, hemp or the like is used. If what consists of natural fiber is used as a water-permeable cloth, since this will corrode gradually and will disappear eventually, vegetation and greening will be attained with respect to an internal vegetation base material.

  The water permeability here refers to the property of passing only the water of the soil slurry injected into the cloth formwork, and almost no solid content such as soil particles flows out, and the fabric with an opening of 0.1 mm or less satisfies this. To do. The most preferable material for such a water-permeable fabric is a cotton nonwoven fabric.

  The shape of the cloth mold is the same as that of a cloth mold formed by stitching a synthetic resin cloth conventionally used for this type of application. For example, two permeable cloths are stacked. In addition, a structure in which the periphery is sewn and an upper layer fabric and a lower layer fabric are connected with a thread or string at an appropriate interval is used. One or more openable and closable openings for injecting the soil slurry are formed at the periphery of the cloth formwork.

Next, the reinforcing frame used in the present invention will be described.
This reinforcement frame is to prevent the vegetation base material laid or placed on the slope from moving or collapsing, and it is arranged by assembling prismatic or round pillar-shaped members in a grid on the slope. It is what is done.
Wood, steel, concrete blocks, and the like are used as the material constituting the frame. Among them, high-strength compressed wood (engineered wood) corrodes and disappears after many years, and is suitable for ecology.

Next, construction methods using these materials will be described.
As shown in FIG. 1, the first example of the tree planting method is a method in which the soil slurry 1 is directly placed on the slope 2 and hardened to form a vegetation base 3. For example, a method of flowing the soil slurry as it is from the top end of the slope with a mixer truck 4 or a truck, a method of flowing using a concrete pump truck, or when the slope is steep, the soil slurry is rolled into a dumpling and this dumpling is used as a slope. There are methods such as arranging, rolling and leveling. In this method, the soil slurry 1 is solidified to become the vegetation base material 3, and the plant is eventually vegetated.

  In the second example, as shown in FIG. 2, the soil slurry 11 is once filled in a cloth formwork 12, and the filling 13 is laid as it is on the slope 2 using a crane or the like. Greening method. In this case, the soil slurry is solidified in the cloth form 12 to become a vegetation base, and the plant is vegetated and grows from a slight opening of the cloth form.

  In the third example, the end of the cloth mold is fixed to the slope with an anchor bolt or the like, and the soil slurry is filled into the cloth mold using a pump or the like.

  In the fourth example, as shown in FIG. 3, a reinforcing frame 31 is installed on the slope 2, and a filling 34 obtained by filling a cloth mold frame 33 with a soil slurry 32 in a space inside the reinforcing frame 31. This is a construction method.

  In the fifth example, a reinforcing frame is installed on the slope in the same manner as the previous example, and a plurality of cloth molds are fixed to the reinforcing frame with fasteners, and the like in the fixed cloth molds. This is a method of pouring the soil slurry.

  In these methods, the soil slurry is solidified within a few days after being cast or laid on the slope, and becomes a vegetation base material. Done. Moreover, the vegetation base material formed by solidifying the soil slurry becomes strong by the soil solidifying agent, and does not collapse due to rain, strong wind, or the like.

  Further, the natural adhesive dissolves to form voids, and plant roots grow in the voids. Therefore, the growth of the plant is good, and the decayed natural adhesive also becomes a plant fertilizer. In addition, the presence of wood chips increases the strength of the vegetation base material, and the moisture contained in the wood chips can be used for plant growth, which also improves plant propagation.

Moreover, if the reinforcing frame is used, the strength of the entire vegetation base material is increased, and greening is possible even on steep slopes or large-scale slopes.
Furthermore, since various construction methods can be adopted in the present invention, an appropriate construction method can be taken in accordance with the shape of the slope, the inclination, etc., and the degree of freedom in construction is high.

It is a schematic block diagram which shows the example of the slope greening method of this invention. It is a schematic block diagram which shows the example of the slope greening method of this invention. It is a schematic block diagram which shows the example of the slope greening method of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 11, 23, 32 ... Soil slurry, 2 ... Slope, 12, 33 ... Fabric formwork, 13 ... Filler, 21, 31 ... Reinforcement frame

Claims (5)

  Slope replanting method in which soil slurry containing soil, soil solidifying agent, natural adhesive, wood chip and seeds is cast on the slope.   A slope planting method in which soil slurry containing soil, soil-solidifying agent, natural adhesive, wood chips and seeds is filled into a cloth formwork and this filling is laid on the slope.   A slope revegetation method in which a cloth formwork is fixed to a slope, and a soil slurry containing soil, a soil solidifying agent, a natural adhesive, wood chips and seeds is filled in the cloth formwork.   A slope in which a reinforcing frame is installed on the slope, and a filling in which a soil mold containing soil, a soil solidifying agent, a natural adhesive, wood chips, and seeds is filled in a cloth formwork is laid inside the reinforcement frame. Tree planting method. A method in which a reinforcing frame is installed on the slope, a cloth formwork is fixed to the reinforcing frame, and a soil slurry containing soil, a soil solidifying agent, a natural adhesive, wood chips and seeds is poured into the cloth formwork. Greening method.

Images