JP2020002216A - Liquid medicine for soil conditioning, soil conditioning method using liquid medicine for soil conditioning, and handling method of liquid medicine for soil conditioning - Google Patents

Liquid medicine for soil conditioning, soil conditioning method using liquid medicine for soil conditioning, and handling method of liquid medicine for soil conditioning Download PDF

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JP2020002216A
JP2020002216A JP2018121246A JP2018121246A JP2020002216A JP 2020002216 A JP2020002216 A JP 2020002216A JP 2018121246 A JP2018121246 A JP 2018121246A JP 2018121246 A JP2018121246 A JP 2018121246A JP 2020002216 A JP2020002216 A JP 2020002216A
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microorganisms
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JP7260968B2 (en
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惠梨 谷口
Eri Taniguchi
惠梨 谷口
孝道 中村
Takamichi Nakamura
孝道 中村
正美 遠藤
Masami Endo
正美 遠藤
龍之介 目時
Ryunosuke Meji
龍之介 目時
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Kumagai Gumi Co Ltd
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Abstract

To provide liquid medicine for soil conditioning which can reduce cost of a soil conditioning method utilizing microbial metabolism function.SOLUTION: Liquid medicine for soil conditioning 1 contains microbe, nutrients of the microbe, slug fertilizer and divalent metal ions. For example, the liquid medicine consists of a microbe liquid containing the microbe and nutrients of the microbe, and a pH conditioning liquid containing the slug fertilizer and the divalent metal ions, or the microbe liquid containing the microbe and the nutrients of the microbe and the pH conditioning liquid containing the slug fertilizer and the divalent metal ion are mixed.SELECTED DRAWING: Figure 1

Description

本発明は、微生物の代謝作用(微生物反応)を利用した土質調整用液剤等に関する。   TECHNICAL FIELD The present invention relates to a liquid preparation for soil adjustment and the like utilizing metabolic action (microbial reaction) of microorganisms.

地盤(土壌)中の微生物の代謝作用により生成される炭酸イオンと多価金属イオンとを反応させて析出される炭酸塩により地盤を固結させる地盤改良方法(土質調整方法)が知られている(例えば、特許文献1乃至3等参照)。
例えば、微生物は次式に示されるとおり、代謝活動において栄養源(グルコース)から二酸化炭素を生じる。
12+6O→6CO+6HO(好気性条件)
12→2CO+2COH(嫌気性条件)
このとき地盤中のカルシウム(多価金属イオン)と微生物の代謝作用により生成される二酸化炭素(炭酸イオン)とが反応し、次式のとおり、土粒子間に炭酸カルシウム(炭酸塩)が析出・沈澱し、地盤が硬化する。
Ca2++CO+HO→CaCO+2H
この場合、カルシウムを含む地盤中に微生物を投入した場合でも地盤が硬化するが(特許文献1参照)、地盤中のカルシウム溶解量が少ない場合や地盤を高強度に改良する場合においては、地盤にカルシウムを注入することにより、炭酸カルシウムの析出量を多くすることができる(特許文献2参照)。
また、微生物の代謝作用(微生物反応)を活性化させるためには、pHを例えば弱酸性から弱アルカリ性付近に保持することが必要であることも知られており、固化対象の地盤にpH調整剤(pH緩衝剤)を注入するようにしている(特許文献3,2参照)。
There is known a soil improvement method (soil quality adjustment method) in which carbonate ions generated by metabolic action of microorganisms in the ground (soil) react with polyvalent metal ions to solidify the ground with carbonates precipitated. (For example, refer to Patent Documents 1 to 3 and the like).
For example, microorganisms produce carbon dioxide from nutrients (glucose) in metabolic activity as shown in the following formula:
C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O ( aerobic conditions)
C 6 H 12 O 6 → 2CO 2 + 2C 2 H 5 OH (anaerobic conditions)
At this time, calcium (polyvalent metal ion) in the ground reacts with carbon dioxide (carbonate ion) generated by metabolism of microorganisms, and calcium carbonate (carbonate) precipitates between soil particles as shown in the following equation. It settles and the ground hardens.
Ca 2+ + CO 2 + H 2 O → CaCO 3 + 2H +
In this case, the ground hardens even when microorganisms are introduced into the ground containing calcium (see Patent Document 1). However, when the amount of dissolved calcium in the ground is small or when the ground is improved to a high strength, the ground is hardened. By injecting calcium, the amount of precipitated calcium carbonate can be increased (see Patent Document 2).
It is also known that in order to activate the metabolism (microbial reaction) of microorganisms, it is necessary to maintain the pH, for example, in the vicinity of weakly acidic to weakly alkaline. (PH buffer) (see Patent Documents 3 and 2).

特許第4621634号公報Japanese Patent No. 4621634 特許第4608669号公報Japanese Patent No. 4608669 特許第4599611号公報Japanese Patent No. 4599611

上述した従来の微生物の代謝作用を利用した土質調整方法において、栄養源と多価金属イオンとpH調整剤とを混合した溶液を用いている。例えば、特許文献3では、グルコースならびに硝酸カルシウムを含むトリス水溶液に酵母を懸濁させた懸濁液を用いた実験例が開示されている。即ち、pH調整剤としてトリス緩衝剤を用いている。
しかしながら、pH調整剤としてのトリス緩衝剤は高価であり、従来の微生物の代謝作用を利用した土質調整方法では、コストが高くなりすぎて、当該微生物の代謝作用を利用した土質調整方法を採用し難いという問題点があった。
本発明は、微生物の代謝作用を利用した土質調整方法の低コスト化を実現可能な土質調整用液剤等を提供することを目的とする。
In the above-mentioned conventional soil conditioning method utilizing the metabolism of microorganisms, a solution in which a nutrient source, a polyvalent metal ion, and a pH adjuster are mixed is used. For example, Patent Document 3 discloses an experimental example using a suspension in which yeast is suspended in a Tris aqueous solution containing glucose and calcium nitrate. That is, a Tris buffer is used as a pH adjuster.
However, the Tris buffer as a pH adjuster is expensive, and the conventional method of adjusting the soil using the metabolism of microorganisms is too expensive, and adopts the method of adjusting the soil using the metabolism of the microorganism. There was a problem that it was difficult.
SUMMARY OF THE INVENTION An object of the present invention is to provide a soil conditioning liquid or the like that can realize a low cost of a soil conditioning method utilizing the metabolic action of microorganisms.

本発明に係る土質調整用液剤は、微生物と微生物の栄養源とスラグ肥料と二価金属イオンとを含有したことを特徴とする。
また、微生物と微生物の栄養源とを含有した微生物液と、スラグ肥料と二価金属イオンとを含有したpH調整液とで構成されたことを特徴とする。
また、微生物と微生物の栄養源とを含有した微生物液と、スラグ肥料と二価金属イオンとを含有したpH調整液とが混合されたことを特徴とする。
また、pH調整液のpH値が8〜9であることを特徴とする。
また、スラグ肥料は、転炉石灰肥料と鉱さい珪酸質肥料とを混合した混合肥料、又は、転炉石灰肥料、又は、鉱さい珪酸質肥料であることを特徴とする。
また、pH調整液は、転炉石灰肥料の量が0.5〜10%、鉱さい珪酸質肥料の量が1〜10%、二価金属の量が1〜5%であり、微生物液は、水1リットル当り、微生物の量が3〜10g、微生物を活性化させるための栄養源の量が3〜10gであり、微生物液とpH調整液との体積比は、1:1であることを特徴とする。
本発明に係る土質調整用液剤によれば、安価なスラグ肥料を用いているため、微生物の代謝作用を利用した土質調整方法の低コスト化を実現できるようになる。
また、本発明に係る土質調整方法は、上述した土質調整用液剤を土質調整対象場所に供給して当該土質調整対象場所の土質を調整する土質調整方法であって、土質調整用液剤を土質調整対象場所の土表面に散布して供給することを特徴とするので、安価な土質調整方法を提供できる。
また、本発明に係る土質調整用液剤の取り扱い方法は、上述した土質調整用液剤の取り扱い方法であって、土質調整対象場所に供給する直前に、微生物を水中に投入して土質調整用液剤を作製することを特徴とするので、土質調整対象場所に供給される微生物の寿命が長くなり、微生物反応を促進させることができて、土質調整対象場所の土質調整効果の高い土質調整用液剤を提供できるようになる。
The liquid preparation for soil adjustment according to the present invention is characterized by containing a microorganism, a nutrient source of the microorganism, a slag fertilizer, and a divalent metal ion.
Further, it is characterized by comprising a microbial liquid containing microorganisms and nutrients of the microorganisms, and a pH adjusting liquid containing slag fertilizer and divalent metal ions.
Further, the present invention is characterized in that a microbial liquid containing a microorganism and a nutrient source of the microorganism, and a pH adjusting liquid containing a slag fertilizer and a divalent metal ion are mixed.
Further, the pH value of the pH adjusting solution is 8 to 9.
The slag fertilizer is a mixed fertilizer obtained by mixing a converter lime fertilizer and a mineral silicate fertilizer, or a converter lime fertilizer or a mineral silicate fertilizer.
In addition, the pH-adjusting liquid has a converter lime fertilizer amount of 0.5 to 10%, a mineral siliceous fertilizer amount of 1 to 10%, and a divalent metal amount of 1 to 5%. Per liter of water, the amount of microorganisms is 3 to 10 g, the amount of nutrients for activating the microorganisms is 3 to 10 g, and the volume ratio between the microorganism liquid and the pH adjustment liquid is 1: 1. Features.
ADVANTAGE OF THE INVENTION According to the liquid for soil adjustment which concerns on this invention, since the cheap slag fertilizer is used, it becomes possible to implement | achieve low cost of the soil adjustment method using the metabolic action of microorganisms.
Further, the soil adjustment method according to the present invention is a soil adjustment method for adjusting the soil at the soil adjustment target location by supplying the soil adjustment liquid described above to the soil adjustment target location, wherein the soil adjustment liquid is subjected to soil adjustment. Since it is characterized by being scattered and supplied on the soil surface at the target place, an inexpensive soil quality adjustment method can be provided.
Further, the method for handling the soil preparation liquid according to the present invention is a method for handling the soil preparation liquid described above, and immediately before supplying the soil preparation target site, the microorganism is put into water to supply the soil preparation liquid. It is characterized by the fact that the life of microorganisms supplied to the site for soil adjustment is prolonged, the microbial reaction can be promoted, and a liquid agent for soil adjustment having a high soil adjustment effect at the site for soil adjustment is provided. become able to.

土質調整用液剤の作製方法を示す図。The figure which shows the preparation method of the liquid agent for soil adjustment. 土質調整用液剤を用いた土質調整方法を示す図。The figure which shows the soil quality adjustment method using the soil material adjustment liquid agent. 土質調整対象場所の土表面の一例である、型枠の代替とする土表面に対する土質調整方法を示す図。The figure which shows an example of the soil surface of the soil-condition adjustment target place, and shows the soil-condition adjustment method with respect to the soil surface used as a substitute of a formwork.

実施形態1
図1,2に示すように、実施形態に係る土質調整用液剤1は、土質調整対象場所10に供給されて当該土質調整対象場所10の土質を調整するための液剤であって、微生物と微生物の栄養源とを含有した微生物液2と、スラグ肥料と二価金属イオンとを含有したpH調整液3とが混合された液剤である。
Embodiment 1
As shown in FIGS. 1 and 2, the soil preparation liquid 1 according to the embodiment is supplied to the soil adjustment target location 10 to adjust the soil quality of the soil adjustment target location 10, and includes microorganisms and microorganisms. And a pH adjusting solution 3 containing slag fertilizer and divalent metal ions.

微生物液2は、例えば、水1リットル当り、微生物としての例えばドライイーストを3〜10g、微生物を活性化させるための栄養源としての例えばグルコースを3〜10g含有した水溶液である。   The microbial liquid 2 is, for example, an aqueous solution containing 3 to 10 g of dry yeast as a microorganism and 3 to 10 g of glucose as a nutrient for activating the microorganism, for example, per liter of water.

pH調整液3は、pH調整液3中に含まれるスラグ肥料としての例えば転炉石灰肥料の量が0.5〜10%、pH調整液3中に含まれるスラグ肥料としての例えば鉱さい珪酸質肥料の量が1〜10%、pH調整液3中に含まれる二価金属イオンを持つ例えば硝酸カルシウム(硝酸カルシウム四水和物(一級)、和光純薬工業株式会社製(尚、同じ成分である商品名「カル・パック」等を用いても良い))の量が1〜5%であって、かつ、pH値が8〜9となるように調整された水溶液である。   The pH-adjusting liquid 3 contains, for example, 0.5 to 10% of converter lime fertilizer as a slag fertilizer contained in the pH-adjusting liquid 3, and a mineral silicate fertilizer as a slag fertilizer contained in the pH-adjusting liquid 3. For example, calcium nitrate (calcium nitrate tetrahydrate (primary), manufactured by Wako Pure Chemical Industries, Ltd. (having the same components) having a divalent metal ion contained in the pH adjusting solution 3 having an amount of 1 to 10% It is an aqueous solution which is adjusted so that the amount of the product may be 1-5% and the pH value is 8-9.

転炉石灰肥料としては、例えば商品名「くみあいミネカル(以下、ミネカルという)」、産業振興株式会社製を使用した。
当該ミネカルの成分値は、石灰(CaO)40.0、ケイ酸(SiO)14.0、苦土(MgO)1.5、酸化鉄(FeO)18.0、マンガン(MnO)0.5、リン酸(P)1.5、その他24.5(ホウ酸(HBO)等)である。
As the converter lime fertilizer, for example, a trade name "Kumiai Mineral (hereinafter, referred to as Mineral)" manufactured by Sangyo Shinko Co., Ltd. was used.
The component values of the mineral are: lime (CaO) 40.0, silicic acid (SiO 2 ) 14.0, magnesia (MgO) 1.5, iron oxide (FeO) 18.0, manganese (MnO) 0.5 , Phosphoric acid (P 2 O 5 ) 1.5, and other 24.5 (boric acid (H 3 BO 3 ), etc.).

鉱さい珪酸質肥料としては、例えば商品名「くみあいケイカル(以下、ケイカルという)」、村樫石灰工業株式会社製を使用した。
当該ケイカルの成分値は、石灰(CaO)48.0、ケイ酸(SiO)30.0、苦土(MgO)5.0、その他17.0(マンガン(MnO)等)である。
As the siliceous silicate fertilizer, for example, trade name “Kumiai Keikar (hereinafter referred to as“ Kikaru ”)” manufactured by Murakashi Lime Industry Co., Ltd. was used.
The component values of the calcical are lime (CaO) 48.0, silicic acid (SiO 2 ) 30.0, magnesia (MgO) 5.0, and others 17.0 (manganese (MnO), etc.).

実施形態1に係る土質調整用液剤1は、例えば、図1(a)に示すように、容器4内で水中に微生物と栄養源とを上述した所定量だけ投入して微生物液2を作製するとともに、容器5内で水中にスラグ肥料と二価金属イオンとを上述した所定量だけ投入してpH調整液3を作製し、その後、図1(b);(c)に示すように、作製した微生物液2とpH調整液3とを液体噴射器6の容器7内に入れて混合することによって、pH値が例えば8となる土質調整用液剤1を作製する。
その後、図2に示すように、液体噴射器6の噴射装置8の操作レバー9を操作することにより、当該土質調整用液剤1を土質調整対象場所10の土表面11に散布して供給する。
As shown in FIG. 1A, for example, the soil preparation liquid 1 according to the first embodiment is prepared by charging microorganisms and nutrients into water in the container 4 in the above-described predetermined amounts to prepare the microbial liquid 2. At the same time, the slag fertilizer and the divalent metal ion are charged into the water in the container 5 by the above-mentioned predetermined amounts to prepare the pH adjusting liquid 3, and thereafter, as shown in FIGS. 1 (b) and (c). The microbial liquid 2 and the pH adjustment liquid 3 are put into the container 7 of the liquid ejector 6 and mixed to prepare the soil adjustment liquid 1 having a pH value of, for example, 8.
Thereafter, as shown in FIG. 2, by operating the operation lever 9 of the ejection device 8 of the liquid ejector 6, the soil preparation liquid agent 1 is scattered and supplied to the soil surface 11 of the soil adjustment target place 10.

実施形態1に係る土質調整用液剤1が土質調整対象場所10の土表面11に散布されて供給された場合、所謂、バイオミネラリゼーションによって土質調整対象場所10の土表面11側の土が硬化する。
即ち、土質調整用液剤1が供給された土質調整対象場所10の土表面11側の土中において、微生物が栄養源を代謝すること(微生物反応)により発生する炭酸イオンと硝酸カルシウム中の二価金属イオンとが反応(鉱物化反応)して土粒子間に析出される炭酸塩により土質調整対象場所10の土表面11側の土が硬化する。
When the soil preparation liquid 1 according to the first embodiment is scattered and supplied to the soil surface 11 of the soil adjustment target place 10, the soil on the soil surface 11 side of the soil adjustment target place 10 is hardened by so-called biomineralization. I do.
That is, in the soil on the soil surface 11 side of the soil adjustment target place 10 to which the soil adjustment liquid 1 is supplied, the carbonate ions generated by the microorganisms metabolizing nutrients (microbial reaction) and the divalent in calcium nitrate The soil on the soil surface 11 side of the soil quality adjustment target location 10 is hardened by the carbonate that precipitates between the soil particles by reacting with the metal ions (mineralization reaction).

実施形態1に係る土質調整用液剤1によれば、安価なスラグ肥料を用いているため、微生物の代謝作用を利用した土質調整方法の低コスト化を実現できるようになる。
また、実施形態1に係る土質調整用液剤1を用いた土質調整方法によれば、土質調整用液剤1を土質調整対象場所10の土表面11に散布して供給するだけなので、簡単、かつ、安価な土質調整方法を提供できる。
According to the soil preparation liquid 1 according to the first embodiment, since the inexpensive slag fertilizer is used, the cost reduction of the soil preparation method utilizing the metabolic action of microorganisms can be realized.
In addition, according to the soil adjustment method using the soil adjustment liquid 1 according to the first embodiment, since the soil adjustment liquid 1 is only sprayed and supplied to the soil surface 11 of the soil adjustment target place 10, it is simple and An inexpensive soil adjustment method can be provided.

尚、微生物は、環境や寿命により減少する。例えば、ドライイーストの場合、乾燥させて休眠状態としてから真空パックされたものを用いるが、真空パックを開封した後はドライイーストが空気に触れるためにドライイーストの休眠状態が解けてしまい、ドライイーストの寿命が早まる。
そこで、実施形態1では、土質調整対象場所10に土質調整用液剤1を供給する直前に、ドライイーストの真空パックを開封して微生物液2を作製し、当該作製した微生物液2とpH調整液3とを混合することによって、土質調整用液剤1を作製するようにした。
即ち、土質調整対象場所10に対する土質調整作業を行う直前に、ドライイーストの真空パックを開封してドライイーストを水中に投入して土質調整用液剤1を作製し、当該土質調整用液剤1を土質調整対象場所10の土表面11に散布するようにしたので、当該土質調整対象場所10に供給されるドライイーストの寿命が長くなり、ドライイーストによる微生物反応を促進させることができて、土質調整対象場所10の土表面11側の土を硬化させることができる土質調整効果の高い土質調整用液剤1を提供できるようになる。
Microorganisms decrease with the environment and life. For example, in the case of dry yeast, it is dried and put into a dormant state, and then vacuum-packed one is used, but after opening the vacuum pack, the dry yeast comes into contact with air and the dormant state of the dry yeast is released, so the dry yeast Lifespan is shortened.
Therefore, in the first embodiment, immediately before supplying the soil preparation liquid 1 to the soil control target place 10, the vacuum pack of dry yeast is opened to prepare the microbial liquid 2, and the prepared microbial liquid 2 and the pH adjustment liquid are prepared. 3 was mixed to prepare the soil preparation liquid 1.
That is, immediately before performing the soil adjustment work on the soil adjustment target location 10, the vacuum pack of the dry yeast is opened, and the dry yeast is put into water to prepare the soil adjustment liquid 1, and the soil adjustment liquid 1 is transferred to the soil. Since it is made to spray on the soil surface 11 of the adjustment target place 10, the life of the dry yeast supplied to the soil adjustment target place 10 is extended, and the microbial reaction by the dry yeast can be promoted. It is possible to provide the soil adjustment liquid 1 having a high soil adjustment effect capable of hardening the soil on the soil surface 11 side of the place 10.

また、微生物反応により発生する炭酸イオンと二価金属イオンとが反応する鉱物化反応を促進させるためのpH環境は、pH値が8〜9程度であることが好ましく、pH値が10以上になると、微生物にとって、好ましくない環境となり、微生物反応が促進されない可能性がある。
実施形態1においては、pH値が8に調整された土質調整用液剤1を、土質調整対象場所10に散布して供給した直後に、当該土質調整対象場所10のpH値を測定した所、pH値は7程度であることを確認した。その後、一週間経過した後に、当該土質調整対象場所10のpH値を測定した所、pH調整液3の元のpH値と同程度のpH値に戻っていることを確認した。
即ち、pH値が8に調整された実施形態1の土質調整用液剤1を用いた場合、土質調整用液剤1を土質調整対象場所10に散布して供給した後、少なくとも、一週間経過するまでの間、土質調整対象場所10においてバイオミネラリゼーションが行われて、土質調整対象場所10の土表面11側の土を硬化させることができることを確認した。
このように、土質調整対象場所10に供給する前は、pH値が8程度であり、土質調整対象場所10に散布して供給した直後には、当該土質調整対象場所10のpH値が7程度になり、かつ、その後、一週間後に、当該土質調整対象場所10のpH値が8程度に戻る土質調整用液剤1を使用することにより、少なくとも、土質調整対象場所10に散布後一週間経過するまでの間に、土質調整対象場所10の土表面11側の土を硬化させることができることがわかった。
Further, the pH environment for promoting a mineralization reaction in which carbonate ions and divalent metal ions generated by a microbial reaction react with each other preferably has a pH value of about 8 to 9, and when the pH value becomes 10 or more. The environment may be unfavorable for microorganisms, and the microbial reaction may not be promoted.
In the first embodiment, the pH value of the soil adjustment target place 10 is measured immediately after the soil adjustment liquid 1 whose pH value is adjusted to 8 is sprayed and supplied to the soil adjustment target place 10. It was confirmed that the value was about 7. Then, after one week, when the pH value of the soil adjustment target place 10 was measured, it was confirmed that the pH had returned to the same level as the original pH value of the pH adjusting solution 3.
That is, when using the soil preparation liquid 1 of Embodiment 1 in which the pH value is adjusted to 8, after the soil preparation liquid 1 is scattered and supplied to the soil adjustment target place 10, at least until one week has passed. During this period, it was confirmed that biomineralization was performed in the soil adjustment target place 10 and the soil on the soil surface 11 side of the soil adjustment target place 10 could be hardened.
As described above, the pH value is about 8 before being supplied to the soil adjustment target place 10, and immediately after being scattered and supplied to the soil adjustment target place 10, the pH value of the soil adjustment target place 10 is about 7 And after that, one week later, at least one week has elapsed after spraying to the soil adjustment target place 10 by using the soil adjustment liquid 1 in which the pH value of the soil adjustment target place 10 returns to about 8. In the meantime, it was found that the soil on the soil surface 11 side of the soil adjustment target location 10 could be hardened.

土質調整対象場所10の土表面11としては、型枠の代替とする土表面、仮設の盛土や切土の土表面、畑の盛土や切土の土表面、運動競技場のグランドの土表面等が考えられる。
このような土質調整対象場所10の土表面11に土質調整用液剤1を散布して供給することにより、土質調整対象場所10の土表面11側の土がバイオミネラリゼーションによって硬化する。
As the soil surface 11 of the soil quality adjustment target place 10, a soil surface as a substitute for a formwork, a temporary embankment or a cut soil surface, a field embankment or a cut soil surface, a ground surface of an athletic stadium, etc. Can be considered.
By dispersing and supplying the soil preparation liquid 1 to the soil surface 11 of the soil adjustment target place 10 as described above, the soil on the soil surface 11 side of the soil adjustment target place 10 is hardened by biomineralization.

例えば、図3に示すように、型枠の代替とする土表面11とは、地盤を掘削した掘削地盤12の上に建物の基礎コンクリートを打設する前に所謂捨てコンクリートを打設する際において、当該掘削地盤12の周囲を囲む壁となる土質調整対象場所10としての地盤の土表面11の事である。
従来、掘削地盤12の上に捨てコンクリートを打設する際においては、当該掘削地盤12を囲む壁となる地盤の土表面が崩れないように木製の型枠(捨て型枠と呼ばれる)を設置したり、バックホー等の重機を用いて当該土表面を固めるようにしていたが、当該土表面11に実施形態1の土質調整用液剤1を散布して供給することにより、当該土表面11側の土を硬化させることができるので、当該硬化させた土表面11を型枠の代わりとできる。
即ち、掘削地盤12の上に捨てコンクリートを打設する際において当該掘削地盤12の周囲を囲む壁となる地盤の土表面が崩れないようにするためには、従来は、木製の型枠やバックホー等の重機が必要となり、施工コストが嵩むという課題があったが、実施形態1によれば、図3に示すように、当該型枠の代替とする土表面11に土質調整用液剤1を散布するだけなので、木製の型枠やバックホー等の重機を不要とでき、捨てコンクリートを打設する際に型枠構築作業を簡単に行えるともに、施工コストを抑えることができるようになる。
For example, as shown in FIG. 3, the soil surface 11 which is a substitute for a formwork is used when placing so-called discarded concrete before placing the foundation concrete of the building on the excavated ground 12 from which the ground has been excavated. And a soil surface 11 of the ground as a soil adjustment target location 10 which becomes a wall surrounding the periphery of the excavated ground 12.
Conventionally, when casting discarded concrete on the excavated ground 12, a wooden formwork (referred to as a discarded formwork) is installed so that the soil surface of the ground which is a wall surrounding the excavated ground 12 does not collapse. Or using a heavy machine such as a backhoe to solidify the soil surface. However, by spraying and supplying the soil adjustment liquid 1 of the first embodiment to the soil surface 11, the soil on the soil surface 11 side is dispersed. Can be cured, and the cured soil surface 11 can be used as a substitute for the mold.
That is, in order to prevent the soil surface of the ground, which is a wall surrounding the periphery of the excavated ground 12 from being collapsed when the concrete is poured onto the excavated ground 12, conventionally, a wooden formwork or a backhoe is used. However, according to the first embodiment, as shown in FIG. 3, the soil preparation liquid agent 1 is sprayed on the soil surface 11 as a substitute for the formwork. Since heavy equipment such as a wooden formwork and a backhoe is not required, the work of constructing the formwork when casting discarded concrete can be easily performed, and the construction cost can be reduced.

また、上述したように、仮設の盛土や切土の土表面、畑の盛土や切土の土表面等に土質調整用液剤1を散布して供給することにより、盛土の崩落や盛土表面側の土の飛散、切土の崩落や切土表面側の土の飛散を抑制できるようになる。   Further, as described above, the soil preparation liquid 1 is sprayed and supplied to a temporary embankment or cut soil surface, a field embankment or cut soil surface, and the like, so that the embankment collapses and the embankment surface side is reduced. It is possible to suppress the scattering of the soil, the collapse of the cut, and the scattering of the soil on the cut surface side.

また、上述したように、運動競技場のグランドの表面や農地等の土の表面等に土質調整用液剤1を散布して供給することにより、例えば強風時においてグランドや農地等の表面側の土の飛散防止効果が得られるようになる。   Further, as described above, by dispersing and supplying the soil preparation liquid 1 to the surface of the ground of an athletic stadium, the surface of soil such as farmland, or the like, for example, in a strong wind, the soil on the surface side of the ground or farmland may be used. Can be obtained.

実施形態2
土質調整対象場所10に、微生物液2とpH調整液3とを別々に連続して供給するようにしてもよい。
即ち、本発明に係る土質調整用液剤1は、微生物と微生物の栄養源とを含有した微生物液2と、スラグ肥料と二価金属イオンとを含有したpH調整液3とで構成された土質調整用液剤1であってもよい。
Embodiment 2
The microorganism liquid 2 and the pH adjustment liquid 3 may be separately and continuously supplied to the soil adjustment target place 10.
That is, the soil preparation liquid 1 according to the present invention is a soil preparation composed of a microorganism liquid 2 containing microorganisms and nutrients of microorganisms, and a pH adjustment liquid 3 containing slag fertilizer and divalent metal ions. Liquid solution 1 for use.

実施形態3
実施形態1では、微生物と微生物の栄養源とを含有した微生物液2と、スラグ肥料と二価金属イオンとを含有したpH調整液3とを混合することにより作製された土質調整用液剤1を例示したが、所定量の水に、この所定量の水に適した量の微生物と微生物の栄養源とスラグ肥料と二価金属イオンとを混合することにより作製された土質調整用液剤であってもよい。
即ち、本発明に係る土質調整用液剤1は、微生物と微生物の栄養源とスラグ肥料と二価金属イオンとを含有した土質調整用液剤1であればよい。
Embodiment 3
In the first embodiment, a soil preparation liquid 1 prepared by mixing a microbial liquid 2 containing a microorganism and a nutrient source of the microorganism, and a pH adjusting liquid 3 containing a slag fertilizer and a divalent metal ion is used. Although exemplified, a predetermined amount of water, a soil preparation liquid prepared by mixing a suitable amount of microorganisms, a nutrient source of the microorganisms, slag fertilizer, and divalent metal ions in the predetermined amount of water, Is also good.
That is, the soil preparation liquid 1 according to the present invention may be a soil preparation liquid 1 containing microorganisms, nutrients of microorganisms, slag fertilizer, and divalent metal ions.

実施形態2、実施形態3においても、土質調整対象場所10に対する土質調整作業を行う直前に、ドライイースト(微生物)の真空パックを開封してドライイーストを水中に投入することによって、微生物液2や土質調整用液剤1を作製し、作製した微生物液2や土質調整用液剤1を土質調整対象場所10の土表面11に散布することが好ましい。   In the second and third embodiments as well, immediately before performing the soil adjustment operation on the soil adjustment target place 10, the vacuum pack of dry yeast (microorganisms) is opened and the dry yeast is put into water, whereby the microorganism liquid 2 or It is preferable that the soil preparation liquid 1 is prepared, and the prepared microbial liquid 2 and the prepared soil preparation liquid 1 are sprayed on the soil surface 11 of the soil adjustment target place 10.

尚、所定量の土質調整用液剤1を作製するために必要な量の微生物と微生物の栄養源とスラグ肥料と二価金属イオンとをセットにして需要者に譲渡(販売等)することで、需要者に土質調整用液剤1を作製するための材料を提供するようにしてもよい。これにより、需要者は、土質調整用液剤1を作製するための材料と水とを用いて土質調整用液剤1を作製できるようになる。   In addition, a set amount of microorganisms, nutrients of microorganisms, slag fertilizer, and divalent metal ions necessary for producing a predetermined amount of the soil preparation liquid 1 are transferred to a consumer (eg, sold). A material for producing the soil adjustment liquid 1 may be provided to the consumer. Thereby, the consumer can prepare the soil preparation liquid 1 using the material for preparing the soil preparation liquid 1 and water.

また、上記では、微生物としてドライイーストを例示したが、ドライイースト以外の微生物を使用しても良い。
また、スラグ肥料として転炉石灰肥料及び鉱さい珪酸質肥料を例示したが、転炉石灰肥料及び鉱さい珪酸質肥料以外のスラグ肥料を用いてもよい。
また、二価金属イオンを持つ物質として硝酸カルシウムを例示したが、二価金属イオンを持つ物質であればその他の物質を用いても構わない。
また、微生物を活性化させるための栄養源としてグルコースを例示したが、グルコース以外の栄養源を用いても構わない。
Further, in the above, dry yeast is exemplified as a microorganism, but a microorganism other than dry yeast may be used.
Although converter lime fertilizer and mineral siliceous fertilizer are illustrated as slag fertilizers, slag fertilizers other than converter lime fertilizer and mineral siliceous fertilizer may be used.
Further, calcium nitrate has been exemplified as a substance having a divalent metal ion, but other substances may be used as long as the substance has a divalent metal ion.
Further, glucose is exemplified as a nutrient source for activating the microorganism, but a nutrient source other than glucose may be used.

1 土質調整用液剤、2 微生物液、3 pH調整液、10 土質調整対象場所。   1 Soil adjustment liquid, 2 Microbial liquid, 3 pH adjustment liquid, 10 Soil adjustment target place.

Claims (8)

微生物と微生物の栄養源とスラグ肥料と二価金属イオンとを含有したことを特徴とする土質調整用液剤。   A liquid preparation for adjusting soil properties, comprising a microorganism, a nutrient source of the microorganism, a slag fertilizer, and a divalent metal ion. 微生物と微生物の栄養源とを含有した微生物液と、スラグ肥料と二価金属イオンとを含有したpH調整液とで構成されたことを特徴とする請求項1に記載の土質調整用液剤。   The soil preparation liquid preparation according to claim 1, comprising a microorganism liquid containing microorganisms and nutrients of the microorganisms, and a pH adjustment liquid containing slag fertilizer and divalent metal ions. 微生物と微生物の栄養源とを含有した微生物液と、スラグ肥料と二価金属イオンとを含有したpH調整液とが混合されたことを特徴とする請求項1に記載の土質調整用液剤。   The soil preparation liquid according to claim 1, wherein a microbial liquid containing a microorganism and a nutrient source of the microorganism, and a pH adjusting liquid containing a slag fertilizer and a divalent metal ion are mixed. pH調整液のpH値が8〜9であることを特徴とする請求項2又は請求項3に記載の土質調整用液剤。   The soil preparation liquid according to claim 2 or 3, wherein the pH value of the pH adjustment liquid is 8 to 9. スラグ肥料は、転炉石灰肥料と鉱さい珪酸質肥料とを混合した混合肥料、又は、転炉石灰肥料、又は、鉱さい珪酸質肥料であることを特徴とする請求項1乃至請求項4のいずれか一項に記載の土質調整用液剤。   The slag fertilizer is a mixed fertilizer obtained by mixing a converter lime fertilizer and a mineral siliceous fertilizer, or a converter lime fertilizer, or a mineral siliceous fertilizer. The soil preparation liquid according to one of the preceding claims. pH調整液は、転炉石灰肥料の量が0.5〜10%、鉱さい珪酸質肥料の量が1〜10%、二価金属の量が1〜5%であり、
微生物液は、水1リットル当り、微生物の量が3〜10g、微生物を活性化させるための栄養源の量が3〜10gであり、
微生物液とpH調整液との体積比は、1:1であることを特徴とする請求項5に記載の土質調整用液剤。
The pH adjusting liquid has a converter lime fertilizer amount of 0.5 to 10%, an ore siliceous fertilizer amount of 1 to 10%, and a divalent metal amount of 1 to 5%.
The microbial fluid has an amount of microorganisms of 3 to 10 g per liter of water, and an amount of nutrients for activating the microorganisms of 3 to 10 g,
6. The soil preparation liquid according to claim 5, wherein the volume ratio of the microorganism liquid to the pH adjustment liquid is 1: 1.
請求項1乃至請求項6のいずれか一項に記載の土質調整用液剤を土質調整対象場所に供給して当該土質調整対象場所の土質を調整する土質調整方法であって、
土質調整用液剤を土質調整対象場所の土表面に散布して供給することを特徴とする土質調整方法。
A soil adjustment method for supplying the soil adjustment liquid according to any one of claims 1 to 6 to a soil adjustment target location to adjust the soil quality of the soil adjustment target location,
A soil adjustment method, comprising: spraying and supplying a soil adjustment solution to a soil surface at a soil adjustment target location.
請求項1乃至請求項6のいずれか一項に記載の土質調整用液剤の取り扱い方法であって、
土質調整対象場所に供給する直前に、微生物を水中に投入して土質調整用液剤を作製することを特徴とする土質調整用液剤の取り扱い方法。
It is a method for handling the soil preparation liquid according to any one of claims 1 to 6,
A method for handling a soil preparation liquid, characterized in that microorganisms are put into water to prepare a soil preparation liquid immediately before the soil preparation liquid is supplied to a site for soil adjustment.
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