JPH09296440A - Ground improvement equipment - Google Patents
Ground improvement equipmentInfo
- Publication number
- JPH09296440A JPH09296440A JP13766396A JP13766396A JPH09296440A JP H09296440 A JPH09296440 A JP H09296440A JP 13766396 A JP13766396 A JP 13766396A JP 13766396 A JP13766396 A JP 13766396A JP H09296440 A JPH09296440 A JP H09296440A
- Authority
- JP
- Japan
- Prior art keywords
- stirring blade
- rotating
- rotating stirring
- bit
- ground improvement
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
(57)【要約】
【課題】この発明は、上下の回転式撹拌翼の間に非回転
式撹拌翼を備えて、撹拌効率の向上を図った地盤改良方
法およびその装置に関する。
【解決手段】 地盤改良装置は、回転自在に設けられた
ドリルロッド１と、このドリルロッド１の下端に接続さ
れたビット２と、ドリルロッド１の周囲に沿って延設さ
れ非回転状態に設けられた管状のケーシング３と、ビッ
ト２の下端部外周に固定され且つ下面に掘削刃４を有す
る下部回転式撹拌翼５と、この下部回転式撹拌翼５の上
方でビットの外周に固定された上部回転式撹拌翼６と、
ケーシング３の下端部にブラケット部７を介して設けら
れ下部回転式撹拌翼５と上部回転式撹拌翼６との中間に
介在して配置された非回転式撹拌翼８とを備えているの
で、掘削土砂が下部回転式撹拌翼５の回転により撹拌さ
れ後、下部非回転式撹拌翼１４の邪魔板機能により撹拌
され、さらに、上部回転式撹拌翼６の回転により撹拌さ
れる。
(57) Abstract: The present invention relates to a ground improvement method and an apparatus for improving the stirring efficiency by providing a non-rotating stirring blade between upper and lower rotating stirring blades. A ground improvement device includes a drill rod (1) rotatably provided, a bit (2) connected to a lower end of the drill rod (1), and a non-rotating state that extends along the periphery of the drill rod (1). A tubular casing 3 and a lower rotary stirring blade 5 fixed to the outer periphery of the lower end of the bit 2 and having a drilling blade 4 on the lower surface, and fixed to the outer periphery of the bit above the lower rotary stirring blade 5. An upper rotary stirring blade 6,
Since the lower end of the casing 3 is provided with the bracket portion 7 and is provided with the non-rotating stirring blade 8 interposed between the lower rotating stirring blade 5 and the upper rotating stirring blade 6, After the excavated earth and sand are stirred by the rotation of the lower rotary stirring blade 5, they are stirred by the baffle function of the lower non-rotating stirring blade 14, and further by the rotation of the upper rotary stirring blade 6.
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、回転式撹拌翼に
併せて非回転式撹拌翼が設けられた地盤改良装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground improvement device provided with a non-rotating stirring blade in addition to a rotating stirring blade.
【０００２】[0002]
【従来の技術】軟弱地盤改良装置として、回転軸状体の
外周に固定され且つ下面に掘削刃を有する回転式撹拌翼
を備えた構造が知られている。この構造では、回転軸状
体又は回転式撹拌翼に形成された注入口から硬化材を注
入しながら掘削し、掘削土砂を硬化材と混合・撹拌して
円柱状に硬化させて、軟弱地盤を改良している。そし
て、撹拌効率を向上させるための改良の施された軟弱地
盤改良装置として、例えば特開平４−２２２７１３号公
報が知られている。この軟弱地盤改良装置によれば、内
管と、この内管の周囲に固定された刃付回転撹拌翼と、
内管の周囲に沿って延設され非回転状態に設けられた外
管と、この外管の下端部の外周に直接固定され刃付回転
式撹拌翼の上方に配置された非回転式撹拌翼とを備えて
いる。これによると、刃付回転式撹拌翼の回転により撹
拌した掘削土砂を、非回転式撹拌翼の邪魔板機能により
撹拌し、撹拌能率の向上を図るものである。ところが、
この特開平４−２２２７１３号公報の軟弱地盤改良装置
は、非回転式撹拌翼が刃付回転式撹拌翼の上方に配置し
ただけの構成なので、撹拌効率の向上に限界があり、ひ
いては作業能率に限界がある。2. Description of the Related Art As a soft ground improvement device, there is known a structure having a rotary stirring blade fixed to the outer periphery of a rotary shaft body and having an excavating blade on the lower surface. In this structure, excavation is performed while injecting the hardening material from the injection port formed in the rotating shaft or the rotary stirring blade, and the excavated earth and sand are mixed with the hardening material and stirred to be hardened into a cylindrical shape to soften the soft ground. Has improved. Then, as a soft ground improvement device which has been improved to improve the stirring efficiency, for example, Japanese Patent Laid-Open No. 4-222713 is known. According to this soft ground improvement device, an inner pipe, a rotary stirring blade with a blade fixed around the inner pipe,
An outer tube that extends along the circumference of the inner tube and is provided in a non-rotating state, and a non-rotating stirring blade that is directly fixed to the outer periphery of the lower end of the outer tube and that is arranged above the rotary stirring blade with blade. It has and. According to this, the excavated earth and sand stirred by the rotation of the rotary stirring blade with blades is stirred by the baffle plate function of the non-rotating stirring blade to improve the stirring efficiency. However,
The soft ground improvement device of Japanese Patent Laid-Open No. 4-222713 has a configuration in which the non-rotating stirring blade is simply arranged above the rotary stirring blade with a blade, so that there is a limit to the improvement of stirring efficiency and, in turn, work efficiency. There is a limit.
【０００３】[0003]
【発明が解決しようとする課題】この発明の主たる課題
は、非回転式撹拌翼を備えたものにおいて、撹拌効率の
向上を図り、もって施工能率の向上、より均一なソイル
セメントをつくることを図った地盤改良装置を提供する
ことにある。SUMMARY OF THE INVENTION The main object of the present invention is to provide a non-rotating agitating blade with an improved agitating efficiency, thereby improving a construction efficiency and making a more uniform soil cement. To provide a ground improvement device.
【０００４】[0004]
【課題を解決するための手段】この課題を達成するた
め、請求項１の発明では、回転自在に設けられたドリル
ロッドと、該ドリルロッドの下端に接続されたビット
と、該ビットの外周に設けられた回転式撹拌翼と、ドリ
ルロッドの周囲に沿って延設され非回転状態に設けられ
たケーシングと、該ケーシングに設けられた非回転式撹
拌翼とを備え、回転式撹拌翼の回転と非回転式撹拌翼の
邪魔板機能で土を撹拌させる地盤改良装置において、
(a).回転式撹拌翼が、ビットの下部に固設され外方へ延
びる下部回転式撹拌翼と、該下部回転式撹拌翼の上方で
ビットに固設され外方へ延びる上部回転式撹拌翼とから
なり、(b).ケーシングに、下部回転式撹拌翼と上部回転
式撹拌翼との間に配置されて外方へ延びる非回転式撹拌
翼を固設してなる、という技術的手段を講じている。ま
た、請求項３の発明では、(c).回転式撹拌翼が、ビット
の下部に固設され外方へ延びる下部回転式撹拌翼と、該
下部回転式撹拌翼の上方でビットに固設され外方へ延び
る上部回転式撹拌翼とからなり、(d).ケーシングに、上
部回転式撹拌翼の上方に配置されて外方へ延びる上部非
回転式撹拌翼と、下部回転式撹拌翼と上部回転式撹拌翼
との間に配置されて外方へ延びる下部非回転式撹拌翼を
固設してなる、という技術的手段を講じている。なお、
下部回転式撹拌翼には、下面に掘削刃を設けてもよい。In order to achieve this object, according to the invention of claim 1, a rotatably provided drill rod, a bit connected to the lower end of the drill rod, and an outer circumference of the bit are provided. Rotation of the rotary stirring blade provided with a rotary stirring blade provided, a casing provided along the periphery of the drill rod and provided in a non-rotating state, and a non-rotating stirring blade provided in the casing. And in the ground improvement device that stirs the soil with the baffle function of the non-rotating stirring blade,
(a). A rotary stirring blade fixed to the lower part of the bit and extending outward, and a rotary stirring blade fixed to the bit above the lower rotary stirring blade and extending outward. (B). A technical means in which (b). A casing is provided with a non-rotating stirring blade that is disposed between the lower rotating stirring blade and the upper rotating stirring blade and extends outward. Are taking. Further, in the invention of claim 3, (c). The rotary stirring blade is fixed to the lower part of the bit and extends downward, and the rotary stirring blade is fixed to the bit above the lower rotary stirring blade. (D) The casing has an upper non-rotating stirring blade that is disposed above the upper rotating stirring blade and extends outward, and a lower rotating stirring blade. A technical measure is taken such that a lower non-rotating stirring blade that is disposed between the upper rotating stirring blade and extends outward is fixedly installed. In addition,
The lower rotary stirring blade may be provided with a drilling blade on the lower surface.
【０００５】[0005]
【発明の実施の形態】以下に、この発明の地盤改良装置
の好適な実施例を図１、図２を参照して説明する。図１
に、この発明の地盤改良装置の一実施例が示されてい
る。この地盤改良装置は、概略が、回転自在に設けられ
たドリルロッド１と、このドリルロッド１の下端に接続
されたビット２と、ドリルロッド１の周囲に沿って延設
され非回転状態に設けられた管状のケーシング３と、ビ
ット２の下端部外周に固定され且つ下面に掘削刃４を有
する下部回転式撹拌翼５と、この下部回転式撹拌翼５の
上方でビットの外周に固定された上部回転式撹拌翼６
と、ケーシング３の下端部にブラケット部７を介して設
けられ下部回転式撹拌翼５と上部回転式撹拌翼６との中
間に介在して配置された非回転式撹拌翼８とを備えて構
成されている。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the ground improvement device of the present invention will be described below with reference to FIGS. FIG.
An embodiment of the ground improvement device of the present invention is shown in FIG. This ground improvement device is roughly provided with a drill rod 1 rotatably provided, a bit 2 connected to the lower end of the drill rod 1, and a non-rotatable state extending along the periphery of the drill rod 1. A tubular casing 3 and a lower rotary stirring blade 5 fixed to the outer periphery of the lower end of the bit 2 and having a drilling blade 4 on the lower surface, and fixed to the outer periphery of the bit above the lower rotary stirring blade 5. Upper rotary stirring blade 6
And a non-rotating stirring blade 8 provided at the lower end of the casing 3 via a bracket portion 7 and interposed between the lower rotating stirring blade 5 and the upper rotating stirring blade 6. Has been done.
【０００６】ここで、ドリルロッド１は、上端がドリル
駆動部９に接続されている。ビット２（又は回転式撹拌
翼５，６）に硬化材の注入口１０が開口され、硬化材が
土砂中に注入されるようになっている。回転式撹拌翼
は、下部回転式撹拌翼５と、上部回転式撹拌翼６とから
成る。ドリル駆動部９の駆動回転により、ドリルロッド
１とビット２と下部回転式撹拌翼５と上部回転式撹拌翼
６とが一体的に回転されるように設けられている。The upper end of the drill rod 1 is connected to the drill driving section 9. The bit 2 (or the rotary stirring blades 5 and 6) is provided with a hardening material injection port 10 so that the hardening material is injected into the earth and sand. The rotary stirring blade comprises a lower rotary stirring blade 5 and an upper rotary stirring blade 6. The drill rod 1, the bit 2, the lower rotary stirring blade 5, and the upper rotary stirring blade 6 are provided so as to be integrally rotated by the driving rotation of the drill driving unit 9.
【０００７】また、ケーシング３は、上端が非回転状態
に設けられたドリルヘッド１１に固定されている。つま
り、ドリルヘッド１１とケーシング３と非回転式撹拌翼
８とは、非回転状態に保持されて設けられている。非回
転式撹拌翼８は、板材状に形成され、その板材の平面部
が垂直になるように設けられている。The casing 3 is fixed to a drill head 11 whose upper end is non-rotating. That is, the drill head 11, the casing 3, and the non-rotating stirring blade 8 are provided in a non-rotating state. The non-rotating stirring blade 8 is formed in the shape of a plate material, and is provided so that the plane portion of the plate material is vertical.
【０００８】すなわち、板材の長さ方向が下部回転式撹
拌翼５と上部回転式撹拌翼６との中間に水平方向に延び
ており、且つ板材の平面部が垂直方向に設定されてい
る。非回転式撹拌翼８は、下部回転式撹拌翼５により回
転された掘削土砂を正面部で受け、邪魔板の機能により
撹拌するものとなっている。That is, the length direction of the plate material extends horizontally in the middle between the lower rotary stirring blade 5 and the upper rotary stirring blade 6, and the plane portion of the plate material is set in the vertical direction. The non-rotating stirring blade 8 receives the excavated earth and sand rotated by the lower rotating stirring blade 5 at the front part and stirs it by the function of the baffle plate.
【０００９】一方、ブラケット部７は、ケーシング３の
下端部に固定され水平に方向に延びる水平軸部７ａと、
この水平軸部７ａの先端から垂直下方に延びる垂直軸部
７ｂとから成る。この実施例では、ブラケット部７と非
回転式撹拌翼８とは、一体的に形成されている。非回転
式撹拌翼８は、その下方にある下部回転式撹拌翼５によ
り一度撹拌された掘削土を邪魔板の機能により撹拌する
ものである。このように上下の回転式撹拌翼５，６の中
間に非回転式撹拌翼８を配置することが特徴である。On the other hand, the bracket portion 7 is fixed to the lower end portion of the casing 3 and has a horizontal shaft portion 7a extending horizontally.
The horizontal shaft portion 7a includes a vertical shaft portion 7b extending vertically downward from the tip of the horizontal shaft portion 7a. In this embodiment, the bracket portion 7 and the non-rotating stirring blade 8 are integrally formed. The non-rotating stirring blade 8 stirs the excavated soil once stirred by the lower rotating stirring blade 5 therebelow by the function of the baffle plate. In this way, the non-rotating stirring blade 8 is arranged between the upper and lower rotating stirring blades 5 and 6.
【００１０】上述のように構成された地盤改良装置によ
ると、次のように掘削土を効率良く細粒化し、撹拌効率
を高める。ドリル駆動部９の駆動回転により、ドリルロ
ッド１とビット２と下部回転式撹拌翼５と上部回転式撹
拌翼６とが一体的に回転し、下部回転式撹拌翼５に設け
られた掘削刃４が削孔する。それと同時にビット２の先
端の注入口１０から硬化材を注入する。According to the ground improvement device constructed as described above, the excavated soil is efficiently fine-grained and the stirring efficiency is increased as follows. The driving rotation of the drill drive unit 9 causes the drill rod 1, the bit 2, the lower rotary stirring blade 5, and the upper rotary stirring blade 6 to rotate integrally, and the drilling blade 4 provided on the lower rotary stirring blade 5 Drills. At the same time, the hardening material is injected from the injection port 10 at the tip of the bit 2.
【００１１】掘削刃４により掘削された土砂は、掻き上
げられ、下部回転式撹拌翼５の回転により撹拌され後、
非回転式撹拌翼８の邪魔板機能により撹拌され、さら
に、上部回転撹拌翼６の回転により撹拌される。これに
より、掘削土砂が効率良く細粒化され、硬化材と混合さ
れる。The earth and sand excavated by the excavating blade 4 is scraped up and stirred by the rotation of the lower rotary stirring blade 5,
It is agitated by the baffle plate function of the non-rotating agitator 8, and further agitated by the rotation of the upper rotary agitator 6. As a result, the excavated soil is efficiently atomized and mixed with the hardener.
【００１２】計画深度まで削孔したら、ビット２を逆転
しながら、ケーシング３と共に上昇させて引き上げる。
この引き上げ時にも、下部回転式撹拌翼５と非回転式撹
拌翼８と上部回転撹拌翼６とにより、撹拌・混合が行な
われる。こうして掘削土砂と硬化材とを全体的に均一に
撹拌・混合し、引き上げた後、硬化材が硬化して土柱が
造成される。After drilling to the planned depth, the bit 2 is reversed and raised together with the casing 3 to be pulled up.
Even during this pulling up, stirring and mixing are performed by the lower rotary stirring blade 5, the non-rotating stirring blade 8 and the upper rotary stirring blade 6. In this way, the excavated earth and sand and the hardened material are uniformly stirred and mixed as a whole, and after being pulled up, the hardened material is hardened to form a soil pillar.
【００１３】図２に、この発明の地盤改良装置の他の実
施例が示されている。この地盤改良装置は、ケーシング
３の下端部に設けられ、上部回転式撹拌翼６の上方に配
置された上部非回転式撹拌翼１２と、この上部非回転式
撹拌翼１２から下方に延びるブラケット部１３を介して
設けられ下部回転式撹拌翼５と上部回転式撹拌翼６との
中間に介在して配置された下部非回転式撹拌翼１４とを
備えている。FIG. 2 shows another embodiment of the ground improvement device of the present invention. This ground improvement device is provided at the lower end of the casing 3 and has an upper non-rotating stirring blade 12 arranged above the upper rotating stirring blade 6, and a bracket portion extending downward from the upper non-rotating stirring blade 12. It is provided with a lower non-rotating stirring blade 14 which is interposed between the lower rotating stirring blade 5 and the upper rotating stirring blade 6.
【００１４】下部非回転式撹拌翼１４は、下部回転式撹
拌翼５と上部回転式撹拌翼６との中間に配置された非回
転式撹拌翼という意味で、上述した実施例の非回転式撹
拌翼８に相当する。この実施例では、非回転式撹拌翼
が、下部回転式撹拌翼５と上部回転式撹拌翼６との中間
に配置されている他、上部回転式撹拌翼６の上方にも配
置されている。The lower non-rotating stirring blade 14 is a non-rotating stirring blade arranged between the lower rotating stirring blade 5 and the upper rotating stirring blade 6, and means the non-rotating stirring blade of the above-mentioned embodiment. It corresponds to the wing 8. In this embodiment, the non-rotating stirring blades are arranged between the lower rotating stirring blades 5 and the upper rotating stirring blades 6 and also above the upper rotating stirring blades 6.
【００１５】この装置によると、掘削土砂が下部回転式
撹拌翼５の回転により撹拌され後、下部非回転式撹拌翼
１４の邪魔板機能により撹拌され、さらに、上部回転式
撹拌翼６の回転により撹拌され、さらにまた上部非回転
式撹拌翼１２の邪魔板機能により撹拌される。According to this apparatus, the excavated earth and sand are stirred by the rotation of the lower rotary stirring blade 5, then by the baffle function of the lower non-rotating stirring blade 14, and further by the rotation of the upper rotary stirring blade 6. It is agitated and also agitated by the baffle function of the upper non-rotating agitator blade 12.
【００１６】[0016]
【発明の効果】以上説明したこの発明の地盤改良装置に
よると、次のような効果を奏する。 （１）請求項１の地盤改良装置によると、土砂は、掻き
上げられ、下部回転式撹拌翼の回転と共に非回転式撹拌
翼の邪魔板機能により撹拌され、さらに、上部回転撹拌
翼の回転により撹拌される。したがって、撹拌効率を向
上でき、もって施工能率を向上、均一なソイルセメント
をつくることを実現できる。 （２）請求項３の地盤改良装置によると、土砂が下部回
転式撹拌翼の回転と共に下部非回転式撹拌翼の邪魔板機
能により撹拌され、さらに、上部回転撹拌翼の回転と共
に上部非回転式撹拌翼の邪魔板機能により撹拌される。
したがって、より一層、撹拌効率および施工能率を向上
できる。The ground improvement device of the present invention described above has the following effects. (1) According to the ground improvement device of claim 1, the soil is scraped up and agitated by the baffle plate function of the non-rotating stirring blade with the rotation of the lower rotating stirring blade, and further by the rotation of the upper rotating stirring blade. Be stirred. Therefore, the stirring efficiency can be improved, the construction efficiency can be improved, and uniform soil cement can be produced. (2) According to the ground improvement device of claim 3, the earth and sand are stirred by the baffle plate function of the lower non-rotating stirring blade together with the rotation of the lower rotating stirring blade, and further the upper non-rotating type is rotated along with the rotation of the upper rotating stirring blade. It is stirred by the baffle function of the stirring blade.
Therefore, the stirring efficiency and the construction efficiency can be further improved.
【図１】この発明の地盤改良装置の一実施例の斜視図で
ある。FIG. 1 is a perspective view of an embodiment of a ground improvement device of the present invention.
【図２】この発明の地盤改良装置の他の実施例の斜視図
である。FIG. 2 is a perspective view of another embodiment of the ground improvement device of the present invention.
１ ドリルロッド ２ ビット ３ ケーシング ４ 掘削刃 ５ 下部回転式撹拌翼 ６ 上部回転式撹拌翼 ７ ブラケット部 ８ 非回転式撹拌翼 １２ 上部非回転式撹拌翼 １３ ブラケット部 １４ 下部非回転式撹拌翼 1 drill rod 2 bit 3 casing 4 drilling blade 5 lower rotary stirring blade 6 upper rotary stirring blade 7 bracket portion 8 non-rotating stirring blade 12 upper non-rotating stirring blade 13 bracket portion 14 lower non-rotating stirring blade
Claims (5)
該ドリルロッドの下端に接続されたビットと、該ビット
の外周に設けられた回転式撹拌翼と、ドリルロッドの周
囲に沿って延設され非回転状態に設けられたケーシング
と、該ケーシングに設けられた非回転式撹拌翼とを備
え、回転式撹拌翼の回転と非回転式撹拌翼の邪魔板機能
で土を撹拌させる地盤改良装置において、 回転式撹拌翼が、ビットの下部に固設され外方へ延びる
下部回転式撹拌翼と、該下部回転式撹拌翼の上方でビッ
トに固設され外方へ延びる上部回転式撹拌翼とからな
り、 ケーシングに、下部回転式撹拌翼と上部回転式撹拌翼と
の間に配置されて外方へ延びる非回転式撹拌翼を固設し
てなることを特徴とする地盤改良装置。1. A drill rod rotatably provided,
A bit connected to the lower end of the drill rod, a rotary stirring blade provided on the outer periphery of the bit, a casing extending along the periphery of the drill rod and provided in a non-rotating state, and provided on the casing. In a ground improvement device that has a non-rotating stirring blade that is installed, and that mixes soil with the rotation of the rotating stirring blade and the baffle function of the non-rotating stirring blade, the rotating stirring blade is fixed at the bottom of the bit. It consists of a lower rotary stirring blade extending outward and an upper rotary stirring blade fixed to the bit above the lower rotary stirring blade and extending outward. A ground improvement device comprising a non-rotating stirring blade fixed to the stirring blade and extending outward.
外側を通るブラケットを介してケーシングに固設されて
いることを特徴とする請求項１に記載の地盤改良装置。2. The ground improvement device according to claim 1, wherein the non-rotating stirring blade is fixed to the casing via a bracket passing outside the upper rotating stirring blade.
該ドリルロッドの下端に接続されたビットと、該ビット
の外周に設けられた回転式撹拌翼と、該ドリルロッドの
周囲に沿って延設され非回転状態に設けられたケーシン
グと、該ケーシングに設けられた非回転式撹拌翼とを備
え、回転式撹拌翼の回転と非回転式撹拌翼の邪魔板機能
で土を撹拌させる地盤改良装置において、 回転式撹拌翼が、ビットの下部に固設され外方へ延びる
下部回転式撹拌翼と、該下部回転式撹拌翼の上方でビッ
トに固設され外方へ延びる上部回転式撹拌翼とからな
り、 ケーシングに、上部回転式撹拌翼の上方に配置されて外
方へ延びる上部非回転式撹拌翼と、下部回転式撹拌翼と
上部回転式撹拌翼との間に配置されて外方へ延びる下部
非回転式撹拌翼を固設してなることを特徴とする地盤改
良装置。3. A drill rod rotatably provided,
A bit connected to the lower end of the drill rod, a rotary stirring blade provided on the outer circumference of the bit, a casing extending along the periphery of the drill rod and provided in a non-rotating state, and the casing. In a ground improvement device that is equipped with a non-rotating stirring blade that is installed and that mixes soil with the rotation of the rotating stirring blade and the baffle plate function of the non-rotating stirring blade, the rotating stirring blade is fixed at the bottom of the bit. The lower rotary stirring blade extending outward and the upper rotary stirring blade fixed to the bit above the lower rotary stirring blade and extending outward. An upper non-rotating stirring blade that is disposed and extends outward, and a lower non-rotating stirring blade that is disposed between the lower rotary stirring blade and the upper rotary stirring blade and that extends outward are fixed. A soil improvement device.
翼とがその先端間を繋ぐブラケットによって連結されて
いることを特徴とする請求項３に記載の地盤改良装置。4. The ground improvement device according to claim 3, wherein the upper non-rotating stirring blade and the lower non-rotating stirring blade are connected to each other by a bracket connecting the tips thereof.
する刃付回転式撹拌翼からなっていることを特徴とする
請求項１または３に記載の地盤改良装置。5. The ground improvement device according to claim 1 or 3, wherein the lower rotary stirring blade is a rotary stirring blade with a blade having an excavating blade on a lower surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13766396A JP3747093B2 (en) | 1996-05-07 | 1996-05-07 | Ground improvement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13766396A JP3747093B2 (en) | 1996-05-07 | 1996-05-07 | Ground improvement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09296440A true JPH09296440A (en) | 1997-11-18 |
| JP3747093B2 JP3747093B2 (en) | 2006-02-22 |
Family
ID=15203915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13766396A Expired - Fee Related JP3747093B2 (en) | 1996-05-07 | 1996-05-07 | Ground improvement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3747093B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017048616A (en) * | 2015-09-02 | 2017-03-09 | 旭化成ホームズ株式会社 | Ground improvement device |
| CN112211188A (en) * | 2019-07-11 | 2021-01-12 | 周兆弟 | Multi-power drill bit |
| CN116290177A (en) * | 2023-03-13 | 2023-06-23 | 长安大学 | A device and method for soil drilling and removal for geotechnical model tests |
-
1996
- 1996-05-07 JP JP13766396A patent/JP3747093B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017048616A (en) * | 2015-09-02 | 2017-03-09 | 旭化成ホームズ株式会社 | Ground improvement device |
| CN112211188A (en) * | 2019-07-11 | 2021-01-12 | 周兆弟 | Multi-power drill bit |
| CN116290177A (en) * | 2023-03-13 | 2023-06-23 | 长安大学 | A device and method for soil drilling and removal for geotechnical model tests |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3747093B2 (en) | 2006-02-22 |
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