JPH01226933A - Formation of vegetation bed in slope-face planting construction - Google Patents

Abstract

PURPOSE:To reduce coast, by casting organic sewage sludge or the like in a fermenting machine, to apply porous water-content-regulating material and ferment bacilli on the sludge and to ferment them secondarily to produce compost, and by spraying the composed with a mortar spraying machine in a specified thickness on the slope drainage construction face. CONSTITUTION:To the waste of sewage sludge or the like, the ferment bacilli 11 of the unit of ceramics and porous water-content regulating material 12 are applied, and they are cast in a fermenting machine 13 to be agitated and are secondarily fermented to obtain vegetation block material 10. After that, the material 10 is cast in a mortar spraying machine 15, and compressed air is fed form a compressor 16, and pressure water is fed from a power sprayer 17. When the material 10 is sprayed with a spraying nozzle 18, then water is applied to and is mixed with, and at the same time, are sprayed in a specified thickness on a slope face 1 to form a vegetation bed 2. Accordingly, construction cost can be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field 3] The present invention is applicable to slope greening work that greens and protects slopes such as artificially created bare land and bedrock made of inorganic and recessive soil. This relates to a method of forming a vegetation base that is carried out in advance.

[Conventional technology]

The applicant has developed a green base material for forming a vegetation base,
In addition to fertilizer, konnyaku powder is added as an adhesive,
A construction method was provided in which a slurry mixed with water was sprayed onto the slope (Japanese Patent Publication No. 1364-1983, Japanese Patent Publication No. 1364-1988,
0-46923).

Mountain sand or black soil is used as the above-mentioned greening base material, and fertilizers, adhesives, etc. are mixed therein. Mountain sand is relatively easily procured at the construction site and contains pumice. Lime and chemical fertilizers (granular and solid advanced chemical fertilizers) are used as fertilizers. Konjac dust, which is mixed as an adhesive, is also useful as a slow-moving fertilizer.

In actual construction, in addition to the above-mentioned materials, peat moss and its analogues are also mixed as a soil conditioner.

[Problem to be solved by the invention]

However, since the above-mentioned peat moss and its analogs are imported products, the cost is high. Therefore, there was a need for an alternative material, but the current situation is that there is no suitable material.

The present invention aims to solve the above-mentioned problems related to soil improvement when forming a vegetation base in conventional slope greening work.

[Means for Solving the Problems] Therefore, in order to solve the above problems and achieve the object of the invention, the present invention provides, as a first means, a method for forming a vegetation base in slope greening work. Organic sewage sludge or living matter is used in slope drainage treatment works to prevent runoff due to water intake, etc., or in log laying works using thinned materials to improve water retention and stability of greening foundations. Waste or industrial waste is put into the fermentation 19vi, a porous moisture control material and a fermentation tank are added thereto, and then the fermentation machine performs secondary fermentation to create compost, and the compost is passed through a mortar spraying machine. The nozzle is used to mix water and spray it onto a slope drainage treatment construction slope, or a slope between adjacent logs in log laying work, to form a base material of a predetermined thickness.

Another means of the present invention is a method for forming a vegetation base in slope greening work, in which a net body provided with a seed curing material is stretched over the surface of the vegetation base in the first means and fixed with anchors. , seedlings were planted on the top of the log.

(Function) To explain the function based on the above means, first, the first aspect of the present invention
In this method, organic sewage sludge, domestic waste, or industrial waste is charged into a fermentation machine, a porous moisture control material and fermentation bacteria are added thereto, and then secondary fermentation is carried out by the fermentation machine. Using a mortar spraying machine, the compost made is sprayed onto the slope in slope drainage treatment work or the slope between adjacent logs in log laying work to form a vegetation base of a predetermined thickness. In this case, the vegetation substrate is
It has a magic viscosity in itself, so if you spray it with water and dry it, it will solidify without adding any adhesive separately. However, at the same time, it also functions as fermented compost.

Further, in another means of the present invention, a net body having seeds and seed curing material facing downward is stretched over the surface of the vegetation base formed by the first means and fixed with anchors. Furthermore, seedlings are planted directly above the logs to promote seed germination and ensure root establishment.

(Example) Next, an example of the method of the present invention will be described. Fig. 1 is a schematic diagram showing an example of slope greening work, Figs. 2 to 4 show a wastewater treatment work, and Fig. 2 Front view, Figure 3 is an enlarged sectional view taken along line 3-3 in Figure 2, Figure 4 is an enlarged sectional view taken along line 4-4 in Figure 2, and Figures 5 to 7 are log laying work. Fig. 5 is a front view, Fig. 6 is an enlarged sectional view taken along line 6-6 in Fig. 5, Fig. 7 is an enlarged sectional view of section a in Fig. 5, and Fig. 8 is an enlarged sectional view of the vegetation base. It is a perspective view of a part of greening net body stretched over the surface.

First, the vegetation base is essential for soil improvement;
The term "soil" can be considered as follows. That is,
It contains not only fine-grained rock but also organic components, and contains soil animals and bacteria, which decompose the remains of animals and plants and release inorganic fertilizers necessary for plant growth. It must have the ability to create. To this end, we have mixed organic ingredients and bacteria, which are decomposers of the ecosystem, into the existing ±11 substrate to create a vegetation substrate that is closer to natural soil 1, which is an organ of ecosystem succession. shorten the
Artificial substrates appear to be more useful because they integrate into the natural ecosystem in a shorter time.

Among the materials that serve as the vegetation base for soil improvement as mentioned above, sewage sludge is mainly made up of sludge and other raw sludge generated from public sewers, and domestic waste is made up of vegetables, fish, etc. from ordinary households. cooking scraps, etc., and other garbage,
Furthermore, industrial waste includes a large amount of fish and meat scraps, food processing residue, etc.

Then, the above-mentioned various wastes are heated by adding a considerable amount of fermenting bacteria to the ceramic carrier, and then stirred by blowing air while maintaining the temperature at a constant temperature. Thereby, the vegetation base material functions as fermented compost.

In addition, porous moisture control materials are used to lower the moisture content of sewage sludge, which has a high moisture content among organic wastes. Use fired processed products such as granulated materials, ceramics, and perlite.

Fermenting bacteria can create a situation in which microorganisms are most likely to be active when certain conditions are met, namely the three conditions of moisture, temperature, and oxygen. For example, water content is 55% to 60%
When mixed with organic waste under the above conditions, water and fats and oils are decomposed and vaporized rapidly. It has the property of multiplying and causing fermentation phenomena.

A sufficient supply of oxygen is maintained by periodic stirring.

(I) "Example of manufacturing process for vegetation base material" Approximately 1 ton of sludge with a moisture content of 80 to 85% is extracted from 2,000 ton of public sewage.

Therefore, as shown in FIG. 1, a fermentation machine 11 and a porous moisture control material 12 are added to organic waste such as organic sewage sludge, domestic waste, industrial waste, etc. using a belt conveyor 14 or a shovel. 13 and stir. After 8 to 100 hours, depending on the amount of input, the sludge undergoes secondary fermentation and its moisture content decreases to 20%, resulting in a somewhat sticky powder or granule. Transforms into compost material.

A fully automatic processing device for carrying out the above fermentation process has been developed and put into practical use, and a large amount of waste can be processed in a short period of time, reducing the volume of the waste by 20 to 10%.

(■) “Example of construction of vegetation base” Next, an example of construction of a vegetation base according to the present invention will be explained.

First, the area and thickness of spraying to form a vegetation base and the ratio of required materials are as follows.

- Spraying area: 100 points - Spraying area: 5, - Vegetation base material (compost): 9 points - Water
1,500 to 2,100 ffi For the above construction work, first remove floating stones, wood chips, etc. from the slope 1.

The above-mentioned vegetation base 2 is formed by putting the vegetation base material 10 into a mortar sprayer 15, stirring and mixing it, and then using a compressor 16.
From compressed air and power spraying! The vegetation base 2 is formed by sending pressurized water from the spray nozzle 17 and spraying it onto the slope 1 to a predetermined thickness while adding and mixing water when spraying from the spray nozzle 18.

Then, by the spray nozzle 18 at the end of the hose connected to the spray [15],
Alternatively, each slope 1 between the interval H of adjacent logs in the log laying work shown in Figs.
Spray on c11).

Furthermore, when performing greening netting, which involves spreading a net with seeds on the surface of the vegetation base 2, the procedure is as follows.

(■) "Construction example of greening net" ・Net body (with curing material) 120rrf (12w x 12m for forest protection, 20aw x 25m) (12w for general use)
謹×12 pus, 20■×25■)・seeds
1.0kg (Kenta Key 31-7
esque, crissiping reef fescue, etc.)・
Anchor (Main) 15 Wood / Auxiliary Anchor (Mekushi) 300 When constructing the tree recording net, as shown in Figure 8, a curing material 4 made of vegetable coarse fiber is laid on the net body 3. The net body is made by entangling the seeds 5 so as not to fall off, and the net body is closely stretched on the surface of the vegetation base 2 with the curing material and seeds facing downward. In the case of wastewater treatment works, the vertical interval S
Or, seedlings 9 are placed on the vegetation base 2 in the vicinity along the drainage ditch 6 with an interval S1 left and right, or in the case of log laying work, seedlings are placed on the vegetation base 2 directly above the log fence fixed with the anchor 8. Plant 9 each.

〔Effect of the invention〕

Since the present invention has the above configuration, in the method for forming a vegetation base in slope greening work according to claim (1), instead of using mountain sand and coating fertilizer as in the past to form the base material. , organic sewage sludge and other wastes are mixed with a porous moisture control material that has good air permeability and provides sufficient oxygen supply, and fermentation teeth are used for secondary fermentation to create compost. By adding and mixing water and spraying onto the slope to form a base material of a predetermined thickness, there is no need for mountain sand and coating fertilizer, which were always required in the past. Furthermore, the above-mentioned vegetation base material can be created by mixing fermented material with sewage sludge, domestic waste, or industrial waste, adding a moisture control material, and spraying the mixture with water using a nozzle. Since a moderate amount of viscosity occurs, it is recommended to use chemically-based adhesives such as polyvinyl acetate or asphpult emulsion, which are conventionally used, or pure vegetable adhesives such as konjac powder instead of the chemical adhesives mentioned above. This also eliminates the need for greening, which has the effect of reducing the cost of slope greening work.

In addition, it usually takes more than two years to naturally ferment organic household waste and industrial waste, but as in the present invention, by adding porous moisture control material and fermentation teeth to the fermentation machine, By fermentation, compost with uniform moisture content can be obtained.

Furthermore, since a large amount of the microorganisms inside the soil necessary for greening are used in the fermentation stage, the resulting compost contains many microorganisms. Therefore, it is possible to obtain almost the same quality as natural soil.

However, in forming the above-mentioned compost, public sewage is the main raw material, so for example, if 19,000 nr of mountain sand is used for one year in slope greening work, 9,000 rI from sewage sludge? compost, lrrf (700kg
) by secondary fermentation, 0.25n ((20
0kg).

The amount of raw sludge used per day is 9000 divided by
12 months ÷ 25 days = 30.

From the above calculation, to produce 30 rrr of compost per day, 1% x 30 ÷ 0.25 rrr - 12 o n? (
86.4 tons) is expected.

Furthermore, 2000 tons of public sewage produces 1 ton of raw sludge, and 2000 tons of sewage is the amount of sewage discharged by approximately 625 people (3201/day per person).

Therefore, to produce 30 tons of compost per day, 1
20 n ((86,4 tons) of raw sludge is required.

This amount requires 172,800 tons of sewage, which is equivalent to treating sewage for approximately 540,000 people.

From these results, it is clear that almost all public sewage waste can be effectively used to form a vegetation base in slope greening work, and raw sludge generated from public sewage systems can be effectively treated to reduce pollution. It is useful for removing connected waste, and the treated waste can be digested without waste, making it a novel and useful method for forming a vegetation base in this type of slope greening work.

In addition, in the case where the net body is stretched over the vegetation base according to claim (2), the roots are firmly attached to the base and covered with a protective material until they germinate to reliably prevent washing away from rainwater. However, seedlings and plants planted in the vegetation base near drainage ditches and other locations in drainage treatment works, or directly above logs in Marudaifu abutment works, or in other locations, will be affected by the fertilizer nutrients contained in the vegetation base. It has the effect of promoting growth without the need for special fertilizers.

[Brief explanation of the drawing]

The figures show an example of the method of the present invention, in which Fig. 1 is a schematic diagram showing an example of slope greening work, Figs. 2 to 4 show a drainage treatment work, and Fig. 2 is a front view; Figure 3 is 3-3 in Figure 2.
4 is an enlarged sectional view taken along line 4-4 in FIG. 2, and FIGS.
The figure is a front view, Figure 6 is an enlarged cross-sectional view taken along line 6-6 in Figure 5, Figure 7 is an enlarged cross-sectional view of part a in Figure 5, and Figure 8 is an enlarged cross-sectional view of the area covered by the plant on the surface of the vegetation base. It is a perspective view of a part of greening net body. 1... Slope 2... Vegetation base 3... Net body 4... Curing material 5... Seed 6...・Drainage ditch 7...Log 8...Anchor 9...Seedling patent applicant Jomo Midorisan Kogyo Co., Ltd.

Claims (2)

[Claims] (1) In slope drainage treatment works to prevent water loss from collapsing slopes and cut slopes due to water intake, etc., or in log laying works using thinned materials to improve water retention and stability of greening foundations, organic matter is Sewage sludge, domestic waste, or industrial waste is put into a fermentation machine, and a porous moisture control material and fermentation bacteria are added thereto, and the fermentation machine performs secondary fermentation to create compost. It is characterized by using a mortar spraying machine and spraying water to a predetermined thickness on the slope drainage treatment method surface and drainage ditch surface, or the slope surface between adjacent logs in log laying work, while mixing water when spraying the nozzle. A method for forming a vegetation base in slope greening work. (2) A net body containing seeds and seed curing material is stretched over the surface of the vegetation base formed by the method described in claim (1) and fixed with anchors, and seedlings are planted directly above the logs in log laying work. A method for forming a vegetation base in slope greening work characterized by planting.