JPH0493409A - Subsoil injection construction method - Google Patents
Subsoil injection construction methodInfo
- Publication number
- JPH0493409A JPH0493409A JP20933090A JP20933090A JPH0493409A JP H0493409 A JPH0493409 A JP H0493409A JP 20933090 A JP20933090 A JP 20933090A JP 20933090 A JP20933090 A JP 20933090A JP H0493409 A JPH0493409 A JP H0493409A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- injection
- gelation time
- reactant
- water glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 26
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000376 reactant Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 19
- 150000004645 aluminates Chemical class 0.000 claims abstract description 8
- 238000001879 gelation Methods 0.000 claims description 45
- 239000000203 mixture Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 11
- 239000004480 active ingredient Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000007596 consolidation process Methods 0.000 abstract description 3
- 239000000499 gel Substances 0.000 description 10
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 7
- 229910001388 sodium aluminate Inorganic materials 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000011440 grout Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- -1 alkaline earth metal salt Chemical class 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 4
- 229910017053 inorganic salt Inorganic materials 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 229940015043 glyoxal Drugs 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- MYZAXBZLEILEBR-RVFOSREFSA-N (2S)-1-[(2S,3R)-2-[[(2R)-2-[[2-[[(2S)-2-[(2-aminoacetyl)amino]-5-(diaminomethylideneamino)pentanoyl]amino]acetyl]amino]-3-sulfopropanoyl]amino]-3-hydroxybutanoyl]pyrrolidine-2-carboxylic acid Chemical compound C[C@@H](O)[C@H](NC(=O)[C@H](CS(O)(=O)=O)NC(=O)CNC(=O)[C@H](CCCN=C(N)N)NC(=O)CN)C(=O)N1CCC[C@H]1C(O)=O MYZAXBZLEILEBR-RVFOSREFSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 108700002400 risuteganib Proteins 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は地盤中に特定の注入液を注入して地盤を固結す
る地盤注入工法に係り、特に地下水面下の地盤中におけ
る固結性に優れ、さらに注入液のゲル化時間調整が容易
で、かつ浸透性に優れた地盤注入工法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a ground injection method in which a specific injection liquid is injected into the ground to solidify the ground, and in particular, it relates to a ground injection method for solidifying the ground by injecting a specific injection liquid into the ground. The present invention relates to a ground injection method that has excellent properties, allows easy adjustment of the gelation time of the injection liquid, and has excellent permeability.
地盤固結用注入液として、従来、水ガラス水溶液に、無
機塩、有機塩あるいはグリオキザールやエステル類、さ
らにはセメント等を加えてゲル化せしめる水ガラスグラ
ウトが知られている。As an injection solution for ground consolidation, water glass grout is conventionally known, which is made by adding inorganic salts, organic salts, glyoxal, esters, cement, etc. to an aqueous water glass solution to form a gel.
上述において、無機塩として水溶性無機塩を用いたもの
はゲル化時間の調整にあたってわずかな無機塩量の違い
でゲル化時間が大幅に変化し、あるいはわずかに過少で
あるだけで全くゲル化しないという現象が生じ、このた
め固結が不確実であった。In the above, when a water-soluble inorganic salt is used as the inorganic salt, when adjusting the gelation time, a slight difference in the amount of inorganic salt can cause a significant change in the gelation time, or a slight difference in the amount of inorganic salt may cause no gelation at all. This phenomenon occurred, and as a result, consolidation was uncertain.
また、難溶性無機塩やセメントの例では、浸透性が悪く
、さらには上述有機系の例では地下水のＢＯＤやＣＯＤ
を増加させるという問題があった。In addition, in the case of poorly soluble inorganic salts and cement, permeability is poor, and furthermore, in the above-mentioned organic examples, groundwater BOD and COD
There was a problem of increasing the
上述の各側において、特に水溶性無機塩を用いる場合、
このゲル化を確実に行い、かつゲル化時間の調整を容易
に行なえれば極とて有用な注入液となることが期待され
る。On each side of the above, especially when using water-soluble inorganic salts,
If this gelation can be carried out reliably and the gelation time can be easily adjusted, it is expected that an extremely useful injection solution will be produced.
そこで、この期待を実現するたｔに、３号水ガラスにあ
らかじめＮａＣｊ！５ＫＣｊ！あるいはアルカリ土金属
塩を混合したものをＡ液とし、他の反応剤水溶液をＢ液
とし、これらＡＳＢ液を組み合わせる注入工法が提案さ
れている。しかし、３号水ガラスにＮａＣＪ！、ＫＣｌ
あるいはアルカリ土金属塩を混合すると、混合液中にコ
ロイドが急激に形成されるため、ゲル化時間の調整がし
にくいという問題があった。Therefore, in order to realize this expectation, I added NaCj to the No. 3 water glass in advance! 5KCj! Alternatively, an injection method has been proposed in which a mixture of alkaline earth metal salt is used as liquid A, an aqueous solution of another reactant is used as liquid B, and these ASB liquids are combined. However, NaCJ in the No. 3 water glass! , KCl
Alternatively, when an alkaline earth metal salt is mixed, colloids are rapidly formed in the mixed solution, making it difficult to adjust the gelation time.
また、水ガラスに強酸を加えて形成される酸性水ガラス
を基本素材とし、これにアルカリ剤を加える注入工法も
知られているが、この場合、強酸を用いることによる現
場における取り扱い上の問題や、ゲル化時間が調整しに
くいという欠点を有している。Another known method is to use acid water glass as the basic material, which is formed by adding strong acid to water glass, and add an alkaline agent to it. However, it has the disadvantage that the gelation time is difficult to adjust.
さらに、水ガラスと反応剤をあらかじめ混合してなるそ
れ自体ゲル化し得る配合液をＡ液とし、これに反応剤水
溶液（Ｂ液）を加えてゲル化時間を調整する方法も知ら
れているが、これは、加水によって大幅にゲル化時間が
遅延してしまうという問題があった。Furthermore, a method is also known in which the gelling time is adjusted by adding a reactant aqueous solution (solution B) to a solution A that is a mixture of water glass and a reactant that can gel itself. However, this had the problem that the addition of water significantly delayed the gelation time.
例えば、ゲル化時間の長いＡ液にＢ淡水溶液を加えてゲ
ル化時間を短縮する場合、Ｂ液の水分によってゲル化時
間が延長するため極めて多量の反応剤をＢ液中に加えな
ければ効果的なゲル化時間の短縮が達成されない。そし
て、Ａ液自体も、さらにはＡ−Ｂ混合液も水で希釈され
て大幅にゲル化時間が延長するから、通常、地下水面下
の地盤中に注入する場合、ゲル化が大幅に遅延するのみ
ならず、注入液が所定個所外に逸脱してしまうという欠
点があった。For example, when adding fresh water solution B to solution A, which has a long gelation time, to shorten the gelation time, the water in solution B will prolong the gelation time, so it will not be effective unless an extremely large amount of reactant is added to solution B. No significant reduction in gelation time is achieved. Furthermore, since both the A liquid itself and the A-B mixed liquid are diluted with water, the gelation time is significantly extended, so gelation is usually significantly delayed when injected into the ground below the groundwater table. In addition, there is a drawback that the injection liquid may escape from a predetermined location.
そこで、本発明の目的は地下水面下の地盤中にお）する
固結性に優れ、さらに注入液のゲル化時間調整が容易で
、かつ浸透性に優れ、前述の公知技術に存する欠点を改
良した地盤注入工法を提供することにある。SUMMARY OF THE INVENTION Therefore, the purpose of the present invention is to improve the above-mentioned drawbacks of the known technology by providing excellent solidification properties (injected into the ground below the groundwater table), easy adjustment of the gelling time of the injection solution, and excellent permeability. The purpose of this project is to provide a ground injection method.
前述の目的を達成するため、本発明によれば、水ガラス
とアルミン酸塩を有効成分とするＴルカリ性配合液を基
本素材とし、この基本素材に反応剤を添加してゲル化時
間を調整してなるアルカリ性注入液を地盤中に注入する
ことを特徴とする。In order to achieve the above-mentioned object, according to the present invention, a T-rukalytic liquid mixture containing water glass and aluminate as active ingredients is used as a basic material, and a reactant is added to this basic material to adjust the gelation time. It is characterized by injecting an alkaline injection liquid into the ground.
本発明において、水ガラスとアルミン酸塩の配合液は水
で希釈するとゲル化時間が短縮する性質を有するもので
あり、本発明者はこの性質に着目してまず、それ自体で
ゲル化し得るゲル化時間の長い水ガラス・アルミン酸塩
を有効成分とする基本素材を保液し、次いでこれに反応
剤水溶液を加えて任意のゲル化時間の注入液を調製し、
この注入液を地盤中に注入することを見いだし、本発明
を完成するに至った。In the present invention, the liquid mixture of water glass and aluminate has the property of shortening the gelation time when diluted with water, and the inventor focused on this property and first developed a gel that can gel by itself. A basic material containing water glass/aluminate as an active ingredient, which has a long gelation time, is retained, and then an aqueous reactant solution is added to this to prepare an injection solution with an arbitrary gelation time.
It was discovered that this injection liquid could be injected into the ground, and the present invention was completed.
本発明にかかる前述の基本素材に水のみを加えただけで
もゲル化時間が短縮するが、この水に反応剤を加えれば
一層効果的にゲル化時間が短縮されることになる。Although gelation time can be shortened by adding only water to the above-mentioned basic material according to the present invention, gelation time can be shortened even more effectively by adding a reactant to this water.
これに対して従来の方法では、水ガラスと反応剤の混合
液をＡ液として場合、これに水のみからなるＢ液を加又
て混合すると混合液の水ガラス濃度は低下するからゲル
化時間は大幅に延長してしまい、したがって、Ａ液のゲ
ル化時間を短縮するには極めて多量の反応剤をＢ液に混
合しなくてはならない。On the other hand, in the conventional method, when a liquid mixture of water glass and a reactant is used as liquid A, when liquid B consisting of only water is added and mixed, the water glass concentration of the liquid mixture decreases, so the gelation time is reduced. Therefore, in order to shorten the gelation time of Part A, an extremely large amount of reactant must be mixed with Part B.
さらに、本発明において、基本素材は水に希釈されると
ゲル化時間が短縮するので地下水面下に注入する場合、
従来の方法ではゲル化時間が延長して逸脱したり、ゲル
化が不可能になったりすることが多いのに対し、本発明
ではむしろゲル化時間が短縮して逸脱を防止でき、所定
の領域で確実に固結する。Furthermore, in the present invention, when the basic material is injected below the groundwater table, since gelation time is shortened when diluted with water,
In contrast to conventional methods, where the gelation time is often prolonged and deviation occurs or gelation becomes impossible, the present invention rather shortens the gelation time, prevents deviation, and allows to ensure solidity.
以下、本発明を実験例によって詳述する。 The present invention will be explained in detail below using experimental examples.
１、使用材料
水力ラス：市販３号水ガラス。モル比２．９４゜Ｔルミ
ン酸ソーダ水溶液： Ａ ｆ ｓｏ＊ １０％、Ｎａ２
Ｏ２０％。1. Materials used: Water glass: commercially available No. 3 water glass. Molar ratio 2.94°T sodium luminate aqueous solution: A f so * 10%, Na2
O20%.
重炭酸ナトリウム；１級試薬。Sodium bicarbonate; primary reagent.
グリオキザール ：市販４０％液。Glyoxal: Commercially available 40% liquid.
塩化カルシウム ：ｌｌ＆試１！。Calcium chloride:ll & trial 1! .
基本素材（Ａ液）の配合（１００ｃｃ当り）表−１
３゜
加水試験
表−２
表−２から、試料番号１〜２１についてはＡ液は加水に
よってゲル化時間が短縮され、４倍以上水にうすめても
ゲル化することがわかる。これに対して、試料番号２２
〜３０についてはＡ液は水で希釈されるとゲル化時間が
大幅に延長され、ないしは固結しないことがわかる。Basic material (liquid A) formulation (per 100cc) Table 1 3° hydration test table 2 From Table 2, for sample numbers 1 to 21, the gelation time of liquid A was shortened by adding water, and it was more than 4 times more hydrated. It can be seen that it gels even when diluted with water. On the other hand, sample number 22
-30, it can be seen that when liquid A is diluted with water, the gelation time is significantly extended or it does not solidify.
４゜
ゲル化試験
表
表−３から、試料番号３１．３２．３６〜３９．４６〜
４８．５２〜５４については、Ｂ液中の反応剤量を少な
く用いてゲル化時間を効果的に調整し得ることがわかる
。これに対して、試料番号３３〜３５．４０〜４２．４
３〜４５については、多重の反応剤を用いなければゲル
化時間が短縮されないことがわかる。また、試料番号４
６〜４８．５２〜５４については、反応剤のわずかな変
化によってゲル化時間が大幅に変化するようなことがな
いため、ゲル化の調整が容易であるのに対し、試料番号
４９〜５１については反応剤量のわずかな変化によって
ゲル化が大幅に増減し、ゲル化の調整がむづかしいこと
がわかる。From 4゜gelation test table-3, sample numbers 31.32.36-39.46-
Regarding No. 48.52 to No. 54, it can be seen that the gelation time can be effectively adjusted by using a small amount of the reactant in liquid B. On the other hand, sample number 33-35.40-42.4
It can be seen that for samples Nos. 3 to 45, the gelation time cannot be shortened unless multiple reactants are used. Also, sample number 4
For Samples No. 6-48 and 52-54, the gelation time is not significantly changed by a slight change in the reactant, so it is easy to adjust the gelation, whereas for Sample Nos. 49-51. It can be seen that slight changes in the amount of reactants can significantly increase or decrease gelation, making it difficult to adjust gelation.
希釈試験
表−４
表−４から、試料番号５５〜５７．６１〜６６について
は、注入液が水に希釈されるとゲル化時間が短縮される
ことがわかる。このため地下水の希釈を受けても固結し
なかったり、逸脱したり等の心配がない。したがって、
これらを地盤中に注入した場合、注入液の外１１１ｉＦ
３の希釈された部分が早くゲル化し、時間の経過ととも
に内部がゲル化するという現象が生じ、所定領域でゲル
化させるたｔの画期的性能が発揮される。これに対して
、試料番号５８〜６０．６７〜６９の従来技術では、地
下水によってゲル化が大幅に延長し、固結性が低下され
る。Dilution Test Table-4 From Table-4, it can be seen that for sample numbers 55-57 and 61-66, the gelation time is shortened when the injection solution is diluted with water. Therefore, there is no need to worry about solidification or deviation even if groundwater is diluted. therefore,
When these are injected into the ground, 111iF outside the injected liquid
A phenomenon occurs in which the diluted portion of No. 3 gels quickly and the inside gels over time, and the revolutionary performance of gelling in a predetermined area is exhibited. On the other hand, in the conventional techniques of sample numbers 58 to 60 and 67 to 69, gelation is significantly prolonged by groundwater, and the caking property is reduced.
６、基本素材の特徴
表−５に示されるように、Ａ液、Ｂ液を調製し、これら
の混合液についてゲル化時間を測定した。6. Characteristics of Basic Materials As shown in Table 5, liquids A and B were prepared, and the gelation time of these mixed liquids was measured.
表−５の試料番号７０〜７２と表−３の試料番号５２〜
５４を比較すると、アルミン酸ソーダと重曹をＢ液中に
あらかじめまぜて水ガラス水溶液のＡ液と混合する従来
の方法では、わずかな反応剤量の違いによりゲル化時間
が大幅に変化するが、本発明のように基本素材にあらか
じめ水ガラス水溶液とアルミン酸ソーダを混合したそれ
自体ゲル化し得る配合液をＡ液として用いると、従来と
同一組成であってもゲル化時間の変化が少なく、ゲル化
時間の調製が極とて容易であることがわかる。Sample numbers 70-72 in Table-5 and sample numbers 52-72 in Table-3
Comparing No. 54, in the conventional method of premixing sodium aluminate and baking soda in Solution B and mixing it with Solution A, which is a water glass aqueous solution, the gelation time changes significantly due to slight differences in the amount of reactants. As in the present invention, if a liquid mixture that can gel itself by pre-mixing the basic material with an aqueous water glass solution and sodium aluminate is used as liquid A, there will be little change in the gelation time even if the composition is the same as before, and the gelation time will be small. It can be seen that adjusting the curing time is extremely easy.
また、表−３の試料番号４３〜４５と５２〜５４を比較
しても、本発明はゲル化時間の変動が少なく、ゲル化時
間の調整が容易であることがわかる。これは本発明の基
本素材中に均質でかつ安定したシリカアルミナゾルが形
成されるためと思われる。Moreover, even when comparing sample numbers 43 to 45 and 52 to 54 in Table 3, it can be seen that in the present invention, there is little variation in gelation time and adjustment of gelation time is easy. This seems to be because a homogeneous and stable silica-alumina sol is formed in the basic material of the present invention.
本発明におけるアルミン酸塩とはアルミン酸ナトリウム
、アルミン酸カリウム、あるいはこれらと炭酸アルカリ
との混合物を言い、さらに、アルミニウムの塩化物、硫
酸塩、塩化アルミニウム、ポリ塩化アルミニウム、硫酸
アルミニウム、みようばん、酸化アルミニウム、水酸化
アルミニウムを苛性アルカリに溶解したものであっても
よい。The aluminate in the present invention refers to sodium aluminate, potassium aluminate, or a mixture of these and an alkali carbonate, and furthermore, aluminum chloride, sulfate, aluminum chloride, polyaluminum chloride, aluminum sulfate, alum, Aluminum oxide or aluminum hydroxide dissolved in caustic alkali may also be used.
また、本発明における水ガラスはモル比５．０〜０．５
の粒状または流状水ガラス、あるいはこれらの水ガラス
と苛性アルカリや珪酸等の混合物である。Moreover, the water glass in the present invention has a molar ratio of 5.0 to 0.5.
granular or fluid water glass, or a mixture of these water glasses with caustic alkali, silicic acid, etc.
このような本発明の具体的実施に当たっては、例えば基
本素材については現場において水ガラス水溶液とアルミ
ン酸ソーダをミキサー中で急速混合して製造され、ある
いはこれらを加圧噴射合流して部分ゲルの形成を防ぎ、
均質な配合液として製造され、また、アルカリ性注入液
については使用成分をミキサー中で急速混合して製造さ
れ、あるいは噴射合流混合装置を用いて水ガラス液とア
ルカリ液を合流混合して得られる水ガラス液にアルミン
酸ソーダを添加し、さらに炭酸ソーダを添加混合して製
造され、さらには水ガラス水溶液とアルミン酸ソーダを
合流混合して得られる配合液に炭酸カルシウムを添加混
合して製造され、あるいは水ガラスと炭酸カルシウムの
混合液とアルミン酸ソーダ水溶液を一気に合流混合して
製造される。なお、本発明は上述のようにして製造され
たアルカリ性注入液にさらに石灰、塩化カルシウム、セ
メント、あるいはスラグ、フライアッシュ等のポゾラン
、その他の任意の塩を添加して強度を増強したり、ゲル
化時間を調整してもよい。In the specific implementation of the present invention, for example, the basic material may be manufactured on-site by rapidly mixing a water glass solution and sodium aluminate in a mixer, or they may be pressure-injected together to form a partial gel. prevent,
It is produced as a homogeneous liquid mixture, or, for alkaline injection liquids, it is produced by rapidly mixing the ingredients in a mixer, or water obtained by combining water glass liquid and alkaline liquid using a jet convergence mixing device. It is manufactured by adding sodium aluminate to a glass liquid and further adding and mixing soda carbonate, and furthermore, adding and mixing calcium carbonate to a mixed liquid obtained by confluently mixing a water glass aqueous solution and sodium aluminate, Alternatively, it can be produced by simultaneously mixing together a liquid mixture of water glass and calcium carbonate and an aqueous sodium aluminate solution. In addition, the present invention further adds lime, calcium chloride, cement, pozzolan such as slag, fly ash, or any other salt to the alkaline injection solution produced as described above to increase the strength or to form a gel. The curing time may be adjusted.
また、上述の本発明は任意の工法に応用でき、例えば基
本素材に急結性配合液を合流させて瞬結性グラウトとし
て注入してのち、急結性配合液の合流を中止し、緩結性
配合液を合流させて緩結性グラウトとして注入し、瞬結
性グラウトと緩結性グラウトを組み合わせて注入するこ
とができる。Furthermore, the present invention described above can be applied to any construction method. For example, after combining the quick-setting liquid mixture with the basic material and injecting it as an instant-setting grout, the joining of the rapid-setting liquid mixture is stopped and the slow-setting process is performed. The mixed liquids can be combined and injected as a slow-setting grout, or a combination of fast-setting grout and slow-setting grout can be injected.
これらの配合液としは任意の酸や塩、有機反応剤（アル
デヒドやエステル等）、セメント、石灰（消石灰、生石
灰）等が用いられ、さらにアルミン酸塩の高濃度配合液
、低濃度配合液も用いられる。また、基本素材中に任意
の反応剤を添加することもできる。These mixed solutions include arbitrary acids, salts, organic reactants (aldehydes, esters, etc.), cement, lime (slaked lime, quicklime), etc., and high-concentration and low-concentration solutions of aluminate are also used. used. Further, any reactant can be added to the basic material.
以上のとおり、本発明は基本素材として水ガラスとアル
ミン酸塩を有効成分とするアルカリ性配合液を用い、こ
れに反応剤を添加してなる注入液を地盤中に注入するこ
とにより、地下水面下の固結性に優れ、少量の反応剤で
効果的にゲル化時間が調整され、さらに浸透性にも優れ
た注入工法であって、実用上有用な発明である。As described above, the present invention uses an alkaline liquid mixture containing water glass and aluminate as active ingredients as basic materials, and by injecting an injection liquid made by adding a reactant into the ground, It is an injection method that has excellent solidification properties, can effectively adjust gelation time with a small amount of reactant, and has excellent permeability, and is a practically useful invention.
Claims (2)
リ性配合液を基本素材とし、この基本素材に反応剤を添
加してゲル化時間を調整してなるアルカリ性注入液を地
盤中に注入することを特徴とする地盤注入工法。(1) The basic material is an alkaline liquid mixture containing water glass and aluminate as active ingredients, and the alkaline injection liquid is injected into the ground by adding a reactant to this basic material and adjusting the gelation time. A ground injection method characterized by
記基本素材はゲル化時間が１時間以上である工法。(2) The ground injection method according to claim 1, wherein the basic material has a gelling time of 1 hour or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2209330A JP2547120B2 (en) | 1990-08-09 | 1990-08-09 | Ground injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2209330A JP2547120B2 (en) | 1990-08-09 | 1990-08-09 | Ground injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0493409A true JPH0493409A (en) | 1992-03-26 |
| JP2547120B2 JP2547120B2 (en) | 1996-10-23 |
Family
ID=16571160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2209330A Expired - Fee Related JP2547120B2 (en) | 1990-08-09 | 1990-08-09 | Ground injection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2547120B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005206719A (en) * | 2004-01-23 | 2005-08-04 | Mitsubishi Rayon Co Ltd | Water glass type chemical for stabilizing soil and ground stabilizing method using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5194620A (en) * | 1975-02-17 | 1976-08-19 | DOSHITSUKAIR YOKOHO | |
| JPS5580487A (en) * | 1978-12-11 | 1980-06-17 | Sanyo Chem Ind Ltd | Soil stabilization method |
| JPS5686984A (en) * | 1979-12-17 | 1981-07-15 | Nitto Chem Ind Co Ltd | Stabilization of soil |
| JPS5993787A (en) * | 1982-11-20 | 1984-05-30 | Kyokado Eng Co Ltd | Solidification of ground |
-
1990
- 1990-08-09 JP JP2209330A patent/JP2547120B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5194620A (en) * | 1975-02-17 | 1976-08-19 | DOSHITSUKAIR YOKOHO | |
| JPS5580487A (en) * | 1978-12-11 | 1980-06-17 | Sanyo Chem Ind Ltd | Soil stabilization method |
| JPS5686984A (en) * | 1979-12-17 | 1981-07-15 | Nitto Chem Ind Co Ltd | Stabilization of soil |
| JPS5993787A (en) * | 1982-11-20 | 1984-05-30 | Kyokado Eng Co Ltd | Solidification of ground |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005206719A (en) * | 2004-01-23 | 2005-08-04 | Mitsubishi Rayon Co Ltd | Water glass type chemical for stabilizing soil and ground stabilizing method using the same |
| JP4502314B2 (en) * | 2004-01-23 | 2010-07-14 | 三菱レイヨン株式会社 | Water glass-based soil stabilization chemical and ground stabilization method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2547120B2 (en) | 1996-10-23 |
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