JPS5916049B2 - How to form columns on the ground - Google Patents
How to form columns on the groundInfo
- Publication number
- JPS5916049B2 JPS5916049B2 JP51016833A JP1683376A JPS5916049B2 JP S5916049 B2 JPS5916049 B2 JP S5916049B2 JP 51016833 A JP51016833 A JP 51016833A JP 1683376 A JP1683376 A JP 1683376A JP S5916049 B2 JPS5916049 B2 JP S5916049B2
- Authority
- JP
- Japan
- Prior art keywords
- ground
- consolidation liquid
- liquid
- bit
- excavated
- 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.)
- Expired
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
【発明の詳細な説明】
本発明は、掘削軸１の先端のビット２部分から下方に向
けてセメントミルク乃至セメントミルクとアスファルト
乳液との混合液のような固結用液をジェット噴射して地
盤３を掘削すると共にビット２にて更に掘削し、ビット
２の上方でかつ攪拌翼９の下方において固結用液を水平
方向にジェット噴射せしめて掘削土砂をジェット噴射液
にて水平に細剪断し、細剪断された土砂と固結用液とを
上部の攪拌翼９にて混合するごとく剪断・攪拌を共に行
い地盤３に柱体４を形成することを特徴とする地盤への
柱体の形成方法に係るものであって、その目的とすると
ころは掘削が簡単にできると共に固結用液と掘削土砂と
が均一に混合した柱体を簡単に形成できる地盤への柱体
の形成方法を提供するにある。DETAILED DESCRIPTION OF THE INVENTION The present invention is a method of solidifying the ground by jetting a consolidation liquid such as cement milk or a mixture of cement milk and asphalt emulsion downward from the bit 2 portion at the tip of the excavation shaft 1. 3 is excavated and further excavated with the bit 2, and a consolidation liquid is jetted horizontally above the bit 2 and below the stirring blade 9, and the excavated soil is sheared horizontally into fine pieces by the jet injection liquid. Formation of pillars on the ground characterized by forming pillars 4 on the ground 3 by shearing and stirring together as if finely sheared earth and sand and consolidation liquid were mixed by an upper stirring blade 9. The purpose of this method is to provide a method for forming pillars on the ground that allows easy excavation and easily forms pillars in which a consolidation liquid and excavated soil are uniformly mixed. There is something to do.
本発明を実施例により詳述する。The present invention will be explained in detail by way of examples.
図中Ａは掘削機であって、掘削機Ａの掘削軸１の先端に
ビット２が設けである。A in the figure is an excavator, and a bit 2 is provided at the tip of an excavator shaft 1 of the excavator A.
ビット２には下方に向けてセメントミルク乃至セメント
ミルクとアスファルト乳液との混合液のような固結用液
をジェット噴射させるための下方口６が設けてあり、ビ
ット２の上方の掘削軸１下部に水平方向に固結用液をジ
ェット噴射させるための側方ロアが設けである。The bit 2 is provided with a lower opening 6 for jetting a solidifying liquid such as cement milk or a mixture of cement milk and asphalt emulsion downward. A side lower is provided for jetting the consolidation liquid in the horizontal direction.
図中９は掘削軸１に設けた攪拌翼である。9 in the figure is a stirring blade provided on the excavation shaft 1.
しかしてまず下方口６からジェット噴射する固結用液に
てビット２の下方において地盤３を掘削しながら、掘削
土砂と固結用液とを混合攪拌し、更にビット２にて掘削
し、更にまた側方ロアから水平方向にジェット噴射する
固結用液にて掘削土砂を水平に細剪断し、細剪断された
土砂と固結用液とを上部の攪拌翼９にて混合して剪断・
攪拌を共に行い、掘削孔内をフィルセメント化乃至ソイ
ルセメントアスファルト化し、掘削軸１を地盤３より抜
いてフィルセメントの柱体４乃至フィルセメントアスフ
ァルトの柱体４を形成するのである。First, while excavating the ground 3 below the bit 2 with a consolidation liquid jetted from the lower port 6, the excavated earth and sand and the consolidation liquid are mixed and stirred, further excavated with the bit 2, and then In addition, the excavated soil is sheared horizontally with a consolidation liquid jetted horizontally from the side lowers, and the finely sheared earth and sand and the consolidation liquid are mixed by the upper stirring blade 9 to shear and
Stirring is performed together to turn the inside of the excavation hole into fill cement or soil cement asphalt, and the excavation shaft 1 is removed from the ground 3 to form columns 4 of fill cement and fill cement asphalt.
なおこの場合ケーシング管５内に掘削軸１を配している
と、側方ロアから水平に固結用液をジェット噴射させて
も、固結用液がケーシング管５より外側方に噴射される
ことがなく、ケーシング管５内で水平に噴射する固結用
液のジェット噴射にて掘削土砂が細剪断され、更にケー
シング管５内で攪拌翼９にて混合されることとなり、正
確な形状の柱体４が形成されることとなる。In this case, if the excavation shaft 1 is disposed inside the casing pipe 5, even if the consolidation liquid is jetted horizontally from the side lower, the consolidation liquid will be injected outward from the casing tube 5. The excavated soil is finely sheared by the jet of consolidation liquid that is sprayed horizontally in the casing pipe 5, and is further mixed by the stirring blades 9 in the casing pipe 5, resulting in an accurate shape. A column 4 will be formed.
上記の如くして形成した柱体４には第３図に示す如く鋼
管製の杭８を挿入埋設してもよい。A pile 8 made of a steel pipe may be inserted and buried in the column 4 formed as described above, as shown in FIG.
また柱体４の形成後柱体４の側部に重複するようにして
第２番目の柱体４を同様の方法で形成し、順次柱体４を
柱列状に形成して山留壁を造成するようにしてもよい。After forming the column 4, a second column 4 is formed in the same manner so as to overlap the side of the column 4, and the column 4 is sequentially formed in a row to form a retaining wall. It is also possible to create one.
ここで杭８の一方の側部に凸部を設けると共に他方の側
部に凹部を設けて柱体４に杭８を挿入した場合杭８同志
を凸部と凹部で嵌合させて連続させるようにしてもよい
。Here, when a convex part is provided on one side of the stake 8 and a concave part is provided on the other side, and the stake 8 is inserted into the column body 4, the convex part and the concave part are fitted together so that the stakes 8 are continuous. You can also do this.
ここで第６図に示す如く攪拌翼９とスクリュ一部１０と
を掘削軸１の長手方向に交互に設けると、掘削軸１の下
降に供って固結用液と掘削土砂との混合物が下方にたま
ることなく、スクリュ一部１０によって一定程度上に上
げられてここで攪拌翼９により攪拌されることとなり、
固結用液と掘削土砂とが分離したり、あるいは下方にの
み比重の重いものがたまったりしないものである。Here, if the stirring blades 9 and the screw parts 10 are provided alternately in the longitudinal direction of the excavation shaft 1 as shown in FIG. It does not accumulate at the bottom, but is raised to a certain level by the screw part 10, where it is stirred by the stirring blades 9.
This prevents the consolidation liquid from separating from the excavated soil, or prevents heavy materials from accumulating only in the lower part.
なお本発明において用いるアスファルト乳液としては例
えば、特許第２５０８６２号に示されるような化学的物
理的に乳剤化して溶融したアスファルト札付が用いられ
るものであり、アスファルト乳液を用いた場合止水効果
を奏することができるものであって、特に山留壁のよう
な場合には効果がある。As the asphalt emulsion used in the present invention, for example, an asphalt tag that is chemically and physically emulsified and melted as shown in Japanese Patent No. 250862 is used, and when an asphalt emulsion is used, it has a water-stopping effect. This is especially effective for retaining walls.
本発明にあっては、叙述の如く掘削軸の先端のビット部
分から下方に向けてセメントミルク乃至セメントミルク
とアスファルト乳液との混合液のような固結用液をジェ
ット噴射して地盤を掘削すると共にビットにて更に掘削
するので、固結用液のジェット噴射によって地盤がまず
掘削されると共に掘削土砂と固結用液とがジェット混合
され、更にビットにて掘削されることとなって、掘削が
簡単且迅速におこなわれると同時に固結用液との混合が
おこなわれることになり、予じめ地盤に孔をあけておい
てから固結用液を注入するような必要がなく、掘削と固
結用液を掘削土砂に混合して地盤に柱体を形成する作業
とが同時に行なえるものであり、さらには掘削軸を押し
下げていくに従って地盤の掘削及び掘削土砂と固結用液
との混合を同時に行なうことができ、掘削と固結用液の
混合の作業を別に行なう必要がなく作業を迅速に行なう
ことができるという利点があり、しかもビットの上方で
かつ攪拌翼の下方において固結用液を水平方向にジェッ
ト噴射せしめて掘削土砂を細剪断し、細剪断された掘削
土砂と固結用液とを上部の攪拌翼にて混合して地盤に柱
体を形成するので、下方へのジェット噴射及びビットに
よって掘削された掘削土砂が掘削機の下方への進入に併
って水平方向へのジェット噴射によって更に細剪断され
ると同時に攪拌翼にて細剪断された掘削土砂と固結用液
とが均一に混合されることとなり掘削軸を押し下げてい
くに従って固結用液の噴射による注入と攪拌翼による固
結用液と掘削土砂との混合を行なえ、地盤を掘削するた
めに掘削軸を押し下げていく作業の際に同時に固結用液
と掘削土砂との混合も行なえて作業を迅速に行なうこと
ができるものであり、またジェット噴射による掘削土砂
の細剪断作用と攪拌翼による混合作用によって、掘削軸
による掘削と同時に掘削土砂と固結用液とを均一に混合
することができて、細剪断された掘削土砂と固結用液と
が均一に混合されたフィルセメント乃至フィルアスファ
ルトセメント柱体を形成できるものである。In the present invention, as described above, the ground is excavated by jetting a solidification liquid such as cement milk or a mixture of cement milk and asphalt emulsion downward from the bit part at the tip of the excavation shaft. At the same time, further excavation is performed with a bit, so the ground is first excavated by jet injection of consolidation liquid, and the excavated soil and consolidation liquid are jet-mixed, and further excavation is performed with a bit. This means that mixing with the consolidation liquid is done easily and quickly, and there is no need to drill holes in the ground in advance and then inject the consolidation liquid. It is possible to mix the consolidation liquid with the excavated soil and form columns on the ground at the same time, and as the excavation shaft is pushed down, the soil is excavated and the excavated soil and consolidation liquid are mixed. It has the advantage that mixing can be done at the same time, and the work can be done quickly without the need to perform drilling and mixing of the consolidation liquid separately.In addition, consolidation occurs above the bit and below the stirring blades. The excavated soil is shredded by jetting the soil horizontally, and the shredded excavated soil and the consolidation fluid are mixed with the stirring blades at the top to form a column on the ground, which moves downward. The excavated soil excavated by the jet jet and bit is further shredded by the horizontal jet jet as the excavator advances downward, and at the same time, it is solidified with the excavated soil shredded by the stirring blade. As the excavation shaft is pushed down, the consolidation liquid is injected by injection and the stirring blade mixes the consolidation liquid with the excavated soil. When the shaft is pushed down, the consolidation liquid and the excavated soil can be mixed at the same time, allowing the work to be carried out quickly. In addition, the work can be done quickly by using jet spray to shred the excavated soil and stirring blades to mix it. Due to this action, the excavated soil and consolidation liquid can be mixed uniformly at the same time as excavation with the excavation shaft, and fill cement or fill asphalt is produced in which the shredded excavated soil and consolidation liquid are uniformly mixed. It can form cement columns.
このように本発明にあっては掘削軸を押し下げていくの
みで、下方への固結用液のジェット噴射とビットによる
掘削と混合→水平方向への固結用液のジェット噴射によ
る細剪断と混合→攪拌翼による混合が３段階で連続して
効率よくおこなえるという利点がある。In this way, in the present invention, by simply pushing down the excavation shaft, jetting of the consolidation liquid downward, drilling and mixing with the bit, → fine shearing by jetting the consolidation liquid in the horizontal direction. It has the advantage that mixing → mixing using stirring blades can be carried out continuously and efficiently in three stages.
第１図は本発明の掘削状態を示す断面図、第２図は同上
の柱体の上断面図、第３図は同上の柱体の他の実施例の
上断面図、第４図は同上の柱体を列設した山留壁の実施
例を示す上面図、第５図は同上に用いる掘削機の他の実
施例による掘削状態を示す断面図、第６図は同上に用い
る掘削機の更に他の実施例による掘削状態を示す断面図
であって、１は掘削軸、２はビット、３は地盤、９は攪
拌翼である。Fig. 1 is a cross-sectional view showing the excavation state of the present invention, Fig. 2 is a top cross-sectional view of the above columnar body, Fig. 3 is a top cross-sectional view of another embodiment of the same columnar body, and Fig. 4 is the same as above. FIG. 5 is a sectional view showing an excavation state using another embodiment of the excavator used in the above, and FIG. It is a sectional view showing the excavation state according to still another embodiment, in which 1 is an excavation shaft, 2 is a bit, 3 is the ground, and 9 is a stirring blade.
Claims (1)
トミルク乃至セメントミルクとアスファルト乳液との混
合液のような固結用液をジェット噴射して地盤を掘削す
ると共にビットにて更に掘削し、ビットの上方でかつ攪
拌翼の下方において固結用液を水平方向にジェット噴射
せしめて掘削土砂をジェット噴射液にて水平に細剪断し
、細剪断された土砂と固結用液とを上部の攪拌翼にて混
合するごとく剪断・攪拌を共に行い地盤に柱体を形成す
ることを特徴とする地盤への柱体の形成方法。1. Excavate the ground by jetting a solidification liquid such as cement milk or a mixture of cement milk and asphalt emulsion downward from the bit part at the tip of the excavation shaft, and further excavate with the bit. A consolidation liquid is jetted horizontally above and below the stirring blades, the excavated earth and sand is shredded horizontally by the jet liquid, and the shredded earth and sand and the consolidation liquid are stirred at the top. A method for forming columns on the ground, characterized by forming columns on the ground by both shearing and stirring as if mixing with blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51016833A JPS5916049B2 (en) | 1976-02-17 | 1976-02-17 | How to form columns on the ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51016833A JPS5916049B2 (en) | 1976-02-17 | 1976-02-17 | How to form columns on the ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5299610A JPS5299610A (en) | 1977-08-20 |
| JPS5916049B2 true JPS5916049B2 (en) | 1984-04-13 |
Family
ID=11927189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51016833A Expired JPS5916049B2 (en) | 1976-02-17 | 1976-02-17 | How to form columns on the ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5916049B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020159041A1 (en) * | 2019-02-01 | 2020-08-06 | 코스맥스 주식회사 | Method for preparing powder composition dispersed through milling process, and powder composition prepared thereby |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594006B2 (en) * | 1980-12-23 | 1984-01-27 | 株式会社エヌ・アイ・テイ | Ground improvement method |
| JPS5965120A (en) * | 1982-10-04 | 1984-04-13 | Seikou Kogyo Kk | Excavating kneader |
| JPS5965118A (en) * | 1982-10-04 | 1984-04-13 | Seikou Kogyo Kk | Excavating and kneading method |
| JPS5965119A (en) * | 1982-10-04 | 1984-04-13 | Seikou Kogyo Kk | Excavating kneader |
| JPS59228519A (en) * | 1983-06-07 | 1984-12-21 | Kazuharu Fujito | Stirrer for ground improvement |
| JPS61113925A (en) * | 1985-10-16 | 1986-05-31 | Mitani Sekisan Kk | Rod for excavation of pile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825768A (en) * | 1971-08-06 | 1973-04-04 | ||
| JPS4934112A (en) * | 1972-08-02 | 1974-03-29 |
-
1976
- 1976-02-17 JP JP51016833A patent/JPS5916049B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825768A (en) * | 1971-08-06 | 1973-04-04 | ||
| JPS4934112A (en) * | 1972-08-02 | 1974-03-29 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020159041A1 (en) * | 2019-02-01 | 2020-08-06 | 코스맥스 주식회사 | Method for preparing powder composition dispersed through milling process, and powder composition prepared thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5299610A (en) | 1977-08-20 |
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