JP2004211366A - Vegetation material and vegetation base formation method using the same - Google Patents

Vegetation material and vegetation base formation method using the same Download PDF

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JP2004211366A
JP2004211366A JP2002381157A JP2002381157A JP2004211366A JP 2004211366 A JP2004211366 A JP 2004211366A JP 2002381157 A JP2002381157 A JP 2002381157A JP 2002381157 A JP2002381157 A JP 2002381157A JP 2004211366 A JP2004211366 A JP 2004211366A
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Prior art keywords
vegetation
ash
wood
coal ash
neutralizing agent
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JP2002381157A
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JP4092193B2 (en
Inventor
Takeshi Sumikawa
澄川  健
Shinichiro Ando
慎一郎 安藤
Takao Yamamoto
隆雄 山本
Mitsuo Taniguchi
美津男 谷口
Takashi Fujie
孝史 藤江
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Nisshoku Corp
Chugoku Electric Power Co Inc
Takenaka Doboku Co Ltd
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Nisshoku Corp
Chugoku Electric Power Co Inc
Takenaka Doboku Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vegetation material and vegetation base formation method using the same by which coal ash such as flyash, clinker ash or a ligneous material such as cut down trees, thinnings can be effectively used and vegetation can be realized in low cost. <P>SOLUTION: The vegetation material includes a coal ash and a ligneous material or includes a coal ash and a ligneous material and an alkaline neutralizing agent, or the alkaline neutralizing agent is phosphate. The vegetation material containing the coal ash, the ligneous material, the alkaline neutralizing agent, and a solidifier is supplied to the vegetation material face to form the vegetation base. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、植生材料およびこの植生材料を用いた植生基盤造成方法に関する。
【0002】
【従来の技術】
【特許文献1】特開2000−178978号公報
道路建設や土地造成等に伴って形成される法面には、一般に、その保護と景観の保持のために植物を植生することが行われる。ところで、道路建設や土地造成等の現場においては、その造成工事の段階で大量の伐採木や抜根(以下、伐採木という)が発生する。これらの伐採木や、森林の間伐によって発生する間伐材のうち、木材としての価値があるものについては、適宜加工を施して利用し、また、木材として利用できないものは、焼却処分されることが多かったが、廃棄物処理法の改正により、焼却禁止となった。そこで、これらの木材として利用できないものを堆肥化することが現在実施されているが、堆肥化には3〜6か月の期間が必要であり、また、堆肥化施設も必要であった。つまり、その利用には、時間と経費がかかり、その処理が問題になってきている。
【0003】
上記の問題を解決する方法として、上述した木材として利用できないものを、チップ,おかぐず,木毛などの木質材料に加工し、堆肥化させていない生の状態で植生用材料として法面に敷設・散布し、法面の緑化に有効利用することが考えられる。この場合、堆肥化するための期間および施設が不要となり、経費も大幅に削減することが可能となる。
【0004】
【発明が解決しようとする課題】
そこで、本発明者らは、前記木質材料を堆肥化(腐食)させていない生の状態で法面に敷設・散布する実験を行ったところ、木質材料からフェノール性酸やタンニン酸などが溶出し、これらが植物の発芽や生育に障害を引き起こし、法面の緑化が妨げられることが判明した。
【0005】
また、主に石炭火力発電所から発生する焼却灰廃棄物であるフライアッシュやクリンカアッシュも、例えば、前記特許文献1に示すように、従来より、植生材料として利用されているが、両者ともに利用方法が限られているため、未だ余剰状態である。特に、前記フライアッシュは、そのアルカリ性と流動性のために、植生材料として大量に使用すると、植物の生育に悪影響が及ぶだけでなく、法面などで用いた場合には、植生基盤層の流亡や表層侵食を引き起こすという問題があった。
【0006】
本発明は上述の事柄に留意してなされたもので、その目的は、フライアッシュ,クリンカアッシュなどの石炭灰や伐採木,間伐材などの木質材料を有効活用できるとともに、低コストで植生を図ることができる植生材料およびこの植生材料を用いた植生基盤造成方法を提供することである。
【0007】
【課題を解決するための手段】
上記目的を達成するために、本発明の植生材料は、石炭灰と、木質材料とを含む(請求項1)。
【0008】
また、石炭灰と、木質材料には、アルカリ中和剤を添加することが好ましい(請求項2)。
【0009】
さらに、前記アルカリ中和剤はリン酸であることが好ましい(請求項3)。
【0010】
本発明の植生基盤造成方法は、石炭灰と、木質材料と、アルカリ中和剤と、固結剤とを含む植生材料を、植生対象面に供給する(請求項4)。
【0011】
上記の構成からなる本発明では、フライアッシュ,クリンカアッシュなどの石炭灰や伐採木,間伐材などの木質材料を有効活用できるとともに、低コストで植生を図ることができる植生材料およびこの植生材料を用いた植生基盤造成方法を提供することができる。
【0012】
すなわち、上記の構成からなる植生材料および植生基盤造成方法では、廃棄物であるフライアッシュ,クリンカアッシュなどの石炭灰や伐採木,間伐材などの木質材料を有効活用できるだけでなく、植生を図るに際して、比較的安価なフライアッシュ,クリンカアッシュや伐採木,間伐材などの木質材料を用いることにより、比較的高価な植生基材の使用量を減らすことができるため、ひいては低コストで植生を図ることが可能となる。
【0013】
さらに、前記フライアッシュやクリンカアッシュは、強いアルカリ性を示し、そのままでは植物の生育に悪影響を及ぼすが、前記アルカリ中和剤により中和されるため、そのようなおそれがない。そして、特に、前記アルカリ中和剤として、リン酸を用いれば、上記中和後のリン酸が植物の肥料となることから、植生を図る面でより好適なものとなる。
【0014】
また、植物の発芽,生育障害を引き起こすとされるフェノール性酸や、タンニン酸などの有害酸は、雨水により生の状態の前記木質材料から溶出し、これにより、植物の生育が阻害されるのであり、これらの有害酸は特に周囲がアルカリ性となっている場合により多く溶け出す。しかし、周囲が酸性となっている場合には、雨水に濡れても前記有害酸の溶出が極めて少なくなるのであり、酸性である前記アルカリ中和剤の存在により、木質材料からの前記有害酸の溶出が抑えられることとなる。
【0015】
【発明の実施の形態】
以下、本発明に対応する実施例を説明する。
本発明の植生材料は、石炭灰と、木質材料と、植生基材と、アルカリ中和剤と、固結材とを含んでいる。
【0016】
前記石炭灰は、例えば、主に石炭専焼火力発電所などの微粉炭ボイラにて発生するフライアッシュやクリンカアッシュ(ボトムアッシュ)である。
【0017】
前記木質材料としては、例えば、造成工事の現場などで発生した伐採木や間伐材等のうち、材木として使用することが難しいものを用いることができ、また、チップ,おかぐず,木毛などに加工された状態となっている。
【0018】
前記植生基材は、例えば、バーク堆肥,ピートモス,活性汚泥堆肥,コンポストなどのうち、いずれか一種類または複数種類を混合したものである。
【0019】
前記アルカリ中和剤としては、例えば、リン酸,塩酸,硝酸,硫酸,シュウ酸,乳酸,酢酸,クエン酸などの酸のうち、いずれか一種類または複数種類を混合したものを含有する酸性物質を用いることができる。また、前記アルカリ中和剤は、例えば、pHが1.5〜5.0,好ましくは2.0〜4.0の範囲となるように構成されている。
【0020】
前記固結材は、例えば、セメントや、流動床ボイラから発生する灰(流動床燃焼灰)である。なお、前記流動床燃焼灰は、石膏や残留石灰を含んでいるため、固化(水和)反応が強いという性質を持っており、この流動床燃焼灰としては、例えば、PFBC灰が挙げられる。
【0021】
すなわち、前記流動床ボイラとしては、例えば、燃料の石炭とともに石灰石をボイラー内に投入し、硫黄酸化物(SO)を燃料と同時に炉内で除去する調和型発電方式に用いられ、圧力容器内に収納され、加圧下で石炭の燃焼を行う加圧流動床燃焼(PFBC:Pressurized Fluidzed Bed Combustion)ボイラが挙げられ、このPFBCボイラから発生する石炭灰がPFBC灰である。このPFBC灰にも、微粉炭ボイラから発生するフライアッシュおよびクリンカアッシュに相当する2種類の灰(フライアッシュおよびBM(Bet Material)アッシュ)が存在し、PFBCフライアッシュは特に固化(水和)反応が強いという性質を持っている。
【0022】
次に、上記の構成からなる植生材料を用いた植生基盤造成方法について説明する。
前記植生基盤造成方法は、前記フライアッシュと、前記クリンカアッシュと、前記木質材料と、前記植生基材と、前記固結材としてのPFBC灰と、前記アルカリ中和剤としてのリン酸とを混合し、圧送機により緑化対象面に吹き付け、例えば約5〜10cmの厚さの層(すなわち、植生基盤)を形成(造成)することによって行われる。なお、前記混合は、例えば、前記圧送機内で行うようにしてもよい。
【0023】
そして、前記植生材料は、前記植生対象面1m当たり、フライアッシュ360L(収縮比約0.7),クリンカアッシュ250L(収縮比約1.0),木質材料としての伐採木チップ310L(収縮比約0.8),植生基材としてのバーク堆肥およびピートモスの混合物500L(収縮比約0.5),固結材としてのPFBC灰2〜10kg,アルカリ中和剤としてのリン酸10〜20L,植物種子数g,水(用水)300Lにて構成してある。
【0024】
ここで、前記フライアッシュ,クリンカアッシュ,木質材料(伐採木チップ)および植生基材の収縮比とはそれぞれ、緑化対象面に吹き付けた際の体積のおおよその減少率を示すものである。すなわち、収縮比約0.7のフライアッシュ360Lは、収縮後に約252Lとなり、収縮比約1.0のクリンカアッシュ250Lは、収縮後に約250Lとなり、収縮比約0.8の木質材料310Lは、収縮後に約248Lとなり、収縮比約0.5の植生基材500Lは、収縮後に約250Lとなる。そして、上記4つの材料は合計で約1000Lとなり、それぞれの量もほぼ同じ(約250Lずつ)となるように構成されている。なお、フライアッシュ,クリンカアッシュ,木質材料および植生基材の配合比は、約1:1:1:1に限るものではないが、前記植生基材の配合比を低くする(例えば、上記4つの材料の総量の70%以下とする)、若しくは木質材料の腐食を見越して植生基材を使用しないことが、廃棄物の有効利用の面およびコストの低減化の面で好ましい。
【0025】
上記のようにして緑化対象面に植生基盤を形成した後は、その周辺の植生からの植物種子が前記緑化対象面(植生基盤)に飛来するなどして、周辺生態系と同様の植生が緑化対象面に復元(形成)されることとなる。
【0026】
なお、前記緑化対象面において植生による急速な緑化を図る場合などには、前記植生材料の中に、植物種子を入れればよい。この植物種子としては、例えば、トールフェスク,バミューダグラス,クリーピングレッドフェスク,メドハギ,ヤマハギなどの種子を用いることができる。
【0027】
また、周辺にみられる植物(植生)と同種類の植物(植生)や、周辺土壌から採取した植物(植生)を、前記緑化対象面(植生基盤)において、例えば、種子,苗木などの形態から生育(植栽)させることにより、より早く周辺と同様の植生を前記緑化対象面に復元(形成)することもできる。
【0028】
上記の構成からなる植生材料および植生基盤造成方法では、廃棄物であるフライアッシュ,クリンカアッシュや伐採木等を有効活用できる。また、前記固結材としてPFBC灰を用いた場合には、さらなる廃棄物有効利用となる。
【0029】
また、植生を図るに際して、比較的安価なフライアッシュ,クリンカアッシュや伐採木を用いることにより、比較的高価な植生基材の使用量を減らすことができるため、ひいては低コストで植生を図ることが可能となる。
【0030】
さらに、前記フライアッシュやクリンカアッシュは、強いアルカリ性を示し、そのままでは植物の生育に悪影響を及ぼすが、前記アルカリ中和剤により中和されるため、そのようなおそれがない。そして、特に、前記アルカリ中和剤として、リン酸を用いれば、上記中和後のリン酸が植物の肥料となることから、植生を図る面でより好適なものとなる。
【0031】
また、植物の発芽,生育障害を引き起こすとされるフェノール性酸や、タンニン酸などの有害酸は、雨水により生の状態の前記木質材料から溶出し、これにより、植物の生育が阻害されるのであり、これらの有害酸は特に周囲がアルカリ性となっている場合により多く溶け出す。しかし、周囲が酸性となっている場合には雨水に濡れても前記有害酸の溶出が極めて少なくなるのであり、酸性の液体である前記アルカリ中和剤の存在により、木質材料からの前記有害酸の溶出が抑えられることとなる。
【0032】
また、前記フライアッシュと木質材料とを併せて用いることにより、フライアッシュの流動性を木質材料によって低減することができ、前記植生材料によって形成される生育基盤の耐侵食性効果が高まることとなる。
【0033】
また、上記植生材料中における前記フライアッシュ,クリンカアッシュおよび木質材料の配合比を大きくすることにより、より多くの廃棄物の有効利用を図ることが可能となる。
【0034】
また、前記クリンカアッシュは、多孔質であり、その孔中に水分や肥料、植物の生育に有益なはたらきをする微生物などが入り込んで、植物の生育が促進されることとなる。
【0035】
また、前記植生材料中に前記PFBC灰を含めるようにした場合には、このPFBC灰により、植生材料にて構成した基盤の強度が増し、基盤の流亡防止や表層侵食を防ぐことができる。
【0036】
なお、上記の構成からなる植生基盤造成方法において、植生材料の構成成分(石炭灰,木質材料,植生基材,アルカリ中和剤,固結材)を全て混合した後に、吹き付けなどにより緑化対象面に供給してもよいが、このような構成に限るものではない。例えば、前記構成成分のうち、木質材料とアルカリ中和剤とのみを混合(具体的には、木質材料を酸性の液体であるアルカリ中和剤に浸漬)して適宜の時間をおいた後、緑化対象面に供給し、続いて、残りの構成成分を混合し、同様に緑化対象面に供給するようにしてもよい。もちろん、木質材料とアルカリ中和剤とのみを混合して適宜の時間をおいた後、残りの構成成分を混合し、その後に緑化対象面に供給するようにしてもよい。いずれの場合にも、前記木質材料からの有害酸の溶出をより確実におさえることが可能となる。
【0037】
また、例えば、前記構成成分のうち、植生基材とアルカリ中和剤とのみを混合して適宜の時間をおいた後、緑化対象面に供給し、続いて、残りの構成成分を混合し、同様に緑化対象面に供給するようにしてもよい。もちろん、植生基材とアルカリ中和剤とのみを混合して適宜の時間をおいた後、残りの構成成分を混合し、その後に緑化対象面に供給するようにしてもよい。
【0038】
【発明の効果】
上記の構成からなる本発明によれば、フライアッシュ,クリンカアッシュなどの石炭灰や伐採木,間伐材などの木質材料を有効活用できるとともに、低コストで植生を図ることができる植生材料およびこの植生材料を用いた植生基盤造成方法を提供することが可能となる。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vegetation material and a vegetation base construction method using the vegetation material.
[0002]
[Prior art]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2000-178978 In general, vegetation is vegetated on a slope formed in accordance with road construction, land development, or the like in order to protect the landscape and preserve the landscape. By the way, in the field construction such as road construction and land creation, a large amount of felled trees and root removal (hereinafter referred to as felled trees) occurs at the stage of the construction work. Of these felled trees and thinned wood generated by thinning the forest, those that are valuable as timber are used after appropriate processing, and those that cannot be used as timber may be incinerated. In many cases, however, incineration was banned due to revisions to the Waste Management Law. Therefore, composting those which cannot be used as these timbers is currently being carried out, but composting required a period of 3 to 6 months, and also required a composting facility. In other words, its use takes time and money, and its processing has become a problem.
[0003]
As a method to solve the above problems, the above-mentioned materials that cannot be used as wood are processed into woody materials such as chips, rice cakes, and wood wool, and laid on the slope as a vegetation material in a raw state that is not composted.・ It is possible to spread it and use it effectively for the planting of slopes. In this case, the period and facility for composting are unnecessary, and the cost can be greatly reduced.
[0004]
[Problems to be solved by the invention]
Therefore, the present inventors conducted an experiment in which the wooden material was laid and spread on a slope in a raw state without being composted (corroded), and phenolic acid, tannic acid, and the like were eluted from the wooden material. It has been found that these cause damage to the germination and growth of plants and prevent the greening of the slope.
[0005]
In addition, fly ash and clinker ash, which are incinerated ash waste mainly generated from coal-fired power plants, have been conventionally used as vegetation materials as shown in Patent Document 1, for example. Since the method is limited, it is still a surplus state. In particular, due to its alkalinity and fluidity, the fly ash not only adversely affects the growth of the plant when used in large quantities as a vegetation material, but also the vegetation basement layer is washed away when used on a slope. There was a problem of causing surface erosion.
[0006]
The present invention has been made in consideration of the above-mentioned matters. The purpose of the present invention is to make effective use of coal ash such as fly ash and clinker ash, and woody materials such as felled trees and thinned wood, and to vegetate at low cost. It is to provide a vegetation material that can be used and a vegetation base construction method using the vegetation material.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the vegetation material of the present invention includes coal ash and woody material (Claim 1).
[0008]
Moreover, it is preferable to add an alkali neutralizing agent to coal ash and woody material (Claim 2).
[0009]
Further, the alkali neutralizer is preferably phosphoric acid (Claim 3).
[0010]
In the vegetation base construction method of the present invention, a vegetation material containing coal ash, a woody material, an alkali neutralizing agent, and a caking agent is supplied to a vegetation target surface (claim 4).
[0011]
In the present invention having the above-described configuration, a vegetation material that can effectively utilize wood ash such as fly ash and clinker ash, and wood materials such as felled trees and thinned wood, and vegetation material that can be vegetated at low cost, and The vegetation base construction method used can be provided.
[0012]
In other words, the vegetation material and the vegetation foundation construction method having the above-mentioned structure can not only effectively utilize waste wood materials such as fly ash and clinker ash, but also wood ash such as felled trees and thinned wood, as well as vegetation. By using wood materials such as relatively cheap fly ash, clinker ash, felled trees, and thinned timber, the amount of relatively expensive vegetation base can be reduced. Is possible.
[0013]
Further, the fly ash and clinker ash exhibit strong alkalinity and adversely affect the growth of plants as they are, but they are neutralized by the alkali neutralizing agent, so there is no such fear. In particular, if phosphoric acid is used as the alkali neutralizing agent, the phosphoric acid after the neutralization becomes a plant fertilizer, which is more suitable in terms of vegetation.
[0014]
Moreover, harmful acids such as phenolic acid and tannic acid, which are thought to cause plant germination and growth failure, are eluted from the wooden material in the raw state by rainwater, and this inhibits plant growth. Yes, these toxic acids dissolve more when the surroundings are alkaline. However, when the surroundings are acidic, the elution of the harmful acid is extremely reduced even when wet with rainwater, and due to the presence of the acidic neutralizing agent, the harmful acid from the woody material Elution is suppressed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, examples corresponding to the present invention will be described.
The vegetation material of the present invention includes coal ash, a woody material, a vegetation base material, an alkali neutralizer, and a caking agent.
[0016]
The coal ash is, for example, fly ash or clinker ash (bottom ash) generated mainly in a pulverized coal boiler such as a coal-fired thermal power plant.
[0017]
As the wood material, for example, among the felled trees and thinned wood generated at the site of the construction work, those that are difficult to use as timber can be used, and also for chips, side dishes, wood wool, etc. It has been processed.
[0018]
The vegetation base material is, for example, one or a mixture of bark compost, peat moss, activated sludge compost, compost, and the like.
[0019]
Examples of the alkali neutralizer include acidic substances containing any one or a mixture of acids such as phosphoric acid, hydrochloric acid, nitric acid, sulfuric acid, oxalic acid, lactic acid, acetic acid, and citric acid. Can be used. Moreover, the said alkali neutralizer is comprised, for example so that pH may become the range of 1.5-5.0, Preferably it is 2.0-4.0.
[0020]
The consolidated material is, for example, cement or ash generated from a fluidized bed boiler (fluidized bed combustion ash). Since the fluidized bed combustion ash contains gypsum and residual lime, it has a property of strong solidification (hydration) reaction. Examples of the fluidized bed combustion ash include PFBC ash.
[0021]
That is, as the fluidized bed boiler, for example, limestone is put into a boiler together with fuel coal, and used in a harmonized power generation system in which sulfur oxide (SO X ) is removed in the furnace simultaneously with the fuel. And a pressurized fluidized bed combustion (PFBC) boiler that burns coal under pressure, and the coal ash generated from the PFBC boiler is PFBC ash. This PFBC ash also has two types of ash (fly ash and BM (Bet Material) ash) corresponding to fly ash and clinker ash generated from a pulverized coal boiler, and PFBC fly ash particularly has a solidification (hydration) reaction. Has the property of being strong.
[0022]
Next, the vegetation base construction method using the vegetation material having the above-described configuration will be described.
The vegetation base construction method comprises mixing the fly ash, the clinker ash, the wood material, the vegetation base material, PFBC ash as the caking agent, and phosphoric acid as the alkali neutralizer. Then, it is performed by spraying the surface to be planted with a pressure feeder and forming (creating) a layer (ie, vegetation base) having a thickness of about 5 to 10 cm, for example. In addition, you may make it perform the said mixing in the said pressure feeder, for example.
[0023]
Then, the vegetation material, the vegetation target surface 1 m 3 per fly ash 360 L (shrinkage ratio of about 0.7), clinker ash 250L (shrinkage ratio of about 1.0), cut trees chip 310L (shrinkage ratio as a woody material About 0.8), 500 L of bark compost and peat moss mixture (shrinkage ratio of about 0.5) as vegetation base, 2-10 kg of PFBC ash as caking agent, 10-20 L of phosphoric acid as alkali neutralizer, It consists of a few grams of plant seeds and 300 L of water (water for use).
[0024]
Here, the shrinkage ratio of the fly ash, the clinker ash, the wood material (cutting tree chip) and the vegetation base material indicates an approximate reduction rate of the volume when sprayed on the greening target surface. That is, fly ash 360L with a shrinkage ratio of about 0.7 becomes about 252L after shrinkage, clinker ash 250L with a shrinkage ratio of about 1.0 becomes about 250L after shrinkage, and wood material 310L with a shrinkage ratio of about 0.8 After shrinkage, the vegetation base material 500L having a shrinkage ratio of about 0.5 becomes about 250L after shrinkage. The total of the four materials is about 1000 L, and the amount of each of the four materials is substantially the same (about 250 L each). The blending ratio of fly ash, clinker ash, woody material, and vegetation base is not limited to about 1: 1: 1: 1, but the blending ratio of the vegetation base is lowered (for example, the above four It is preferable not to use the vegetation base material in anticipation of corrosion of the wood material) in view of effective use of waste and cost reduction.
[0025]
After the vegetation base is formed on the surface to be replanted as described above, plant seeds from the surrounding vegetation fly to the surface to be replanted (vegetation base), etc. It will be restored (formed) to the target surface.
[0026]
In addition, what is necessary is just to put a plant seed in the said vegetation material, when aiming at rapid greening by vegetation in the said greening object surface. Examples of plant seeds include seeds such as tall fescue, bermudagrass, creeping red fescue, medhagi and yamahagi.
[0027]
In addition, plants of the same type (vegetation) as the plants (vegetation) seen in the surroundings, or plants (vegetation) collected from the surrounding soil, can be obtained from the form of seeds, seedlings, etc. By growing (planting), the same vegetation as the surrounding area can be restored (formed) to the greening target surface earlier.
[0028]
In the vegetation material and the vegetation base construction method configured as described above, waste fly ash, clinker ash, felled trees, and the like can be effectively used. Further, when PFBC ash is used as the consolidation material, the waste is further effectively used.
[0029]
In addition, when using vegetation, relatively inexpensive fly ash, clinker ash, and felled trees can be used to reduce the amount of relatively expensive vegetation base material used. It becomes possible.
[0030]
Further, the fly ash and clinker ash exhibit strong alkalinity and adversely affect the growth of plants as they are, but they are neutralized by the alkali neutralizing agent, so there is no such fear. In particular, if phosphoric acid is used as the alkali neutralizing agent, the phosphoric acid after the neutralization becomes a plant fertilizer, which is more suitable in terms of vegetation.
[0031]
Moreover, harmful acids such as phenolic acid and tannic acid, which are thought to cause plant germination and growth failure, are eluted from the wooden material in the raw state by rainwater, and this inhibits plant growth. Yes, these toxic acids dissolve more when the surroundings are alkaline. However, when the surroundings are acidic, the leaching of the harmful acid is extremely reduced even when wet with rainwater. Due to the presence of the alkali neutralizing agent that is an acidic liquid, the harmful acid from the woody material is removed. Elution is suppressed.
[0032]
Further, by using the fly ash and the wood material in combination, the fluidity of the fly ash can be reduced by the wood material, and the erosion resistance effect of the growth base formed by the vegetation material will be increased. .
[0033]
Further, by increasing the blending ratio of the fly ash, clinker ash and woody material in the vegetation material, more waste can be effectively used.
[0034]
The clinker ash is porous, and moisture, fertilizer, microorganisms that work beneficially for plant growth enter the pores, and plant growth is promoted.
[0035]
In addition, when the PFBC ash is included in the vegetation material, the strength of the base made of the vegetation material is increased by the PFBC ash, and the base can be prevented from being washed away or eroded.
[0036]
In addition, in the vegetation foundation construction method having the above configuration, after all the components of the vegetation material (coal ash, woody material, vegetation base material, alkali neutralizer, caking agent) have been mixed, However, the present invention is not limited to such a configuration. For example, among the above components, after mixing a wood material and an alkali neutralizer only (specifically, immersing the wood material in an alkali neutralizer that is an acidic liquid) and allowing an appropriate time, The green component may be supplied to the greening target surface, and then the remaining components may be mixed and supplied to the greening target surface in the same manner. Of course, it is also possible to mix only the wood material and the alkali neutralizing agent and allow an appropriate time, and then mix the remaining components and then supply them to the greening target surface. In any case, it is possible to more reliably suppress the leaching of harmful acids from the wood material.
[0037]
In addition, for example, among the constituent components, after mixing the vegetation base material and the alkali neutralizing agent for an appropriate time, supplying the greening target surface, and subsequently mixing the remaining constituent components, Similarly, it may be supplied to the greening target surface. Of course, after mixing only a vegetation base material and an alkali neutralizing agent and allowing an appropriate time, the remaining components may be mixed and then supplied to the greening target surface.
[0038]
【The invention's effect】
According to the present invention having the above-described configuration, a vegetation material capable of effectively utilizing wood ash such as fly ash and clinker ash, wood materials such as felled trees and thinned wood, and vegetation can be obtained at low cost, and the vegetation. It becomes possible to provide a vegetation base construction method using materials.

Claims (4)

石炭灰と、木質材料とを含むことを特徴とする植生材料。Vegetation material characterized by including coal ash and woody material. 石炭灰と、木質材料と、アルカリ中和剤とを含むことを特徴とする植生材料。A vegetation material comprising coal ash, a wood material, and an alkali neutralizer. 前記アルカリ中和剤がリン酸である請求項2に記載の植生材料。The vegetation material according to claim 2, wherein the alkali neutralizer is phosphoric acid. 石炭灰と、木質材料と、アルカリ中和剤と、固結剤とを含む植生材料を、植生対象面に供給することを特徴とする植生基盤造成方法。A vegetation base construction method, characterized in that a vegetation material containing coal ash, a woody material, an alkali neutralizer, and a caking agent is supplied to a vegetation target surface.
JP2002381157A 2002-12-27 2002-12-27 A vegetation foundation construction method that suppresses leaching of harmful acids from woody materials Expired - Fee Related JP4092193B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007028907A (en) * 2005-07-22 2007-02-08 Ohbayashi Corp Greening soil and method for producing the same
JP2012024006A (en) * 2010-07-22 2012-02-09 Iwate Prefecture Method for producing bark fiber culture soil, and bark fiber culture soil
JP2018012779A (en) * 2016-07-21 2018-01-25 中国電力株式会社 Soil conditioner and method for producing the same, and soil improving method
US10392578B2 (en) 2010-06-01 2019-08-27 Dsm Ip Assets B.V. Extraction of lipid from cells and products therefrom

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007028907A (en) * 2005-07-22 2007-02-08 Ohbayashi Corp Greening soil and method for producing the same
US10392578B2 (en) 2010-06-01 2019-08-27 Dsm Ip Assets B.V. Extraction of lipid from cells and products therefrom
JP2012024006A (en) * 2010-07-22 2012-02-09 Iwate Prefecture Method for producing bark fiber culture soil, and bark fiber culture soil
JP2018012779A (en) * 2016-07-21 2018-01-25 中国電力株式会社 Soil conditioner and method for producing the same, and soil improving method

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