JPH0649834A - Method and device for construction ground improving body - Google Patents

Method and device for construction ground improving body

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Publication number
JPH0649834A
JPH0649834A JP29103091A JP29103091A JPH0649834A JP H0649834 A JPH0649834 A JP H0649834A JP 29103091 A JP29103091 A JP 29103091A JP 29103091 A JP29103091 A JP 29103091A JP H0649834 A JPH0649834 A JP H0649834A
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JP
Japan
Prior art keywords
curing agent
pressurized gas
drilling
hardening agent
rod
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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
Application number
JP29103091A
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Japanese (ja)
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JPH0826539B2 (en
Inventor
Wataru Nakanishi
Takeshi Sekine
渉 中西
健 関根
Original Assignee
Nakajima Shiro
Nit Co Ltd
中嶋 志朗
株式会社エヌ、アイ、テイ
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Application filed by Nakajima Shiro, Nit Co Ltd, 中嶋 志朗, 株式会社エヌ、アイ、テイ filed Critical Nakajima Shiro
Priority to JP3291030A priority Critical patent/JPH0826539B2/en
Publication of JPH0649834A publication Critical patent/JPH0649834A/en
Publication of JPH0826539B2 publication Critical patent/JPH0826539B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Abstract

PURPOSE:To further improve the precedent technique to realize instantly and surely the ground improving body having the toughness and a high quality by the synergetic effect of the rotary injection of the hardening agent and the pressurized gas with the lift effect due to the inclusion of the pressurized gas. CONSTITUTION:One or more than two of hardening agent filling pipe 11 and pressurized gas filling pipe 12 are built in a hardening agent filling rod 10, and this hardening agent filling rod 10 has a monitor unit 18 and a drilling blade 17, which provided with a rod main body part drilling bit 19 and a drilling blade bit 20 in the lower part of a filling rod main body. In this hardening agent filling rod 10, the pressurized gas filling pipe 12 is arranged close to the hardening agent filling pipe 11, and both the filling pipes 11, 12 are communicated with a nozzle part of the tip of the drilling blade 17. The surrounding of the hardening agent rotated by a spiral groove formed on the inner wall of the hardening agent filling pipe 11 is contained by the pressurized gas rotated by a spiral groove formed on the inner wall of the pressurized gas filling pipe 12, and the hardening agent is injected from a nozzle.

Description

【発明の詳細な説明】 Detailed Description of the Invention

【0001】 [0001]

【産業上の利用分野】本発明は、軟弱地盤の改良、建築構造物基礎等を主目的として施工される地盤改良体造成工法に関し、特に、大口径且つ強硬な地盤改良体造成工法及びその装置に関する。 The present invention relates to improvements in soft ground, the building structure foundation such relates soil improvement material reclamation method is construction as a main purpose, in particular, large diameter and tough soil improvement material reclamation method and apparatus on.

【0002】 [0002]

【従来の技術】硬化剤を噴射することによる地盤改良工法は様々な試行錯誤を経て発展してきたが、従来の掘削翼ないし撹拌翼を有しないものに加え、本件発明者は、 BACKGROUND OF THE INVENTION ground improvement method by injecting a curing agent has been developed through various trial and error, in addition to those having no conventional drilling blade or the stirring blade, the present inventors have
これまで、撹拌翼を付けた地盤改良装置、更にまた、撹拌機能の他に掘削機能を有する掘削翼を設け、その先端部より硬化剤を噴射する装置をも開発した。 Previously, soil improvement device with a stirring blade, and also, the drilling blade having a drilling function to another stirring function provided, and also developed a device for injecting the hardening agent from the distal end. これら一連の先行技術については、既に出願済みである。 These series of prior art, has already been filed. 更に、本件発明者等は、掘削翼に伸びた注入管内壁にスパイラル溝を設けることにより硬化剤を回転噴射させる工法並びに装置をも開発し、画期的な強硬地盤改良体を造成するに至った。 Furthermore, the present inventors have also developed a method and apparatus for rotating spraying a curing agent by providing a spiral groove in the injection tube wall extending in the drilling blade, leading to construct a breakthrough tough soil improvement material It was. 当該発明についても既に出願済みである(平成3年7月26日付)。 It has already been filed also for the invention (1991 July 26 date). これら先行技術の最終段階、特に上記7月26日付出願にて開示した硬化剤注入管にスパイラル溝を設けた構成により、掘削翼の先端部から噴射される硬化剤の噴射力の強化、並びに強靭な地盤改良の点で優れた効果が発揮された。 The final stage of these prior art, in particular by the configuration in which a spiral groove in the curing agent injection tube disclosed in the above 26 July application, enhanced jet force of the curing agent injected from the tip of the excavating blade, and tough excellent effect has been demonstrated in terms of a ground improvement.

【0003】 [0003]

【発明が解決しようとする課題】しかしながら、本件発明者は、これら先行する発明よりも、更に確実且つ強靭な地盤改良を実現する使命を果たすべく研究を重ねてきた。 [SUMMARY OF THE INVENTION However, the inventors have, than these prior to the invention, has been to extensive research fulfill its mission to realize a more reliable and tough ground improvement. 本発明は、かかる研究の中で考案されたもので、経済性と確実性を維持しつつ、上記先行発明よりも更に一歩進んだ大口径かつ強靭な地盤改良体を造成することを目的とする。 The present invention has been devised in such studies, while maintaining the economy and reliability, and an object thereof is to construct a large diameter and tough soil improvement material went one step further than the prior invention .

【0004】 [0004]

【課題を解決するための手段】上記目的を達成するために、1又は2以上の硬化剤注入管11及び加圧気体注入管12を内蔵すると共に、モニタ部18、ロッド本体部掘削用ビット19並びに注入ロッド本体部の下方部に掘削翼ビット20を具備した掘削翼17を有する硬化剤注入ロッド10において、該加圧気体注入管12を該硬化剤注入管11に近接して配置し、両注入管がそれぞれ掘削翼先端部に設けたノズル部まで連通すると共に、掘削翼に伸びた硬化剤注入管内壁のスパイラル溝により回転する硬化剤が該掘削翼内の加圧気体注入管内壁のスパイラル溝により回転する加圧気体により包合されつつ核ノズルより噴射されるよう構成したことを特徴とする地盤改良体造成装置及び工法を提供する。 To achieve the above object, according to the solution to ## with a built-in one or more of the curing agent injection pipe 11 and pressurized gas inlet tube 12, a monitor unit 18, the rod main body drill bit 19 and in the curing agent injection rod 10 having an injection rod body portion of the drilling blade 17 provided with the drill blade bit 20 in the lower portion, the the pressurized pressure gas injection tube 12 is disposed in proximity to the curing agent injection pipe 11, both with injection tube communicates to a nozzle portion provided on the excavating blade tip, respectively, the curing agent which is rotated by the spiral groove of the curing agent injection tube wall extending in the drilling wing of pressurized gas injection tube wall in 該掘 Kezutsubasa spiral providing soil improvement material reclamation system and method which is characterized by being configured to be ejected from the nucleus nozzle while engaged wrapped by pressurized gas which is rotated by a groove.

【0005】 [0005]

【作用】上記手段を採用した結果、スパイラル溝による回転機能と、加圧気体の包合によりリフトアップし、遠方まで噴射するいわゆるリフト効果とが相まって、硬化剤を瞬時に遠くまで強制充填させることができ、効率的且つ確実に強靭な地盤改良が実現できる。 [Action] As a result of employing the above means, a rotation function according to the spiral groove, lifted up by condition for inclusion of the pressurized gas, together and the so-called lift effect of injection longer distance, to force filling far the curing agent instantly It can be efficiently and reliably tough soil improvement can be realized.

【0006】 [0006]

【実施例】以下、本発明の実施例を図面を参照しつつ説明する。 EXAMPLES Hereinafter, with reference to the drawings an embodiment of the present invention. 図1(A)は、本発明に係る1実施例を示す。 Figure 1 (A) shows an embodiment of the present invention.
即ち、1本の硬化剤注入管11及び該注入管の周囲に加圧気体注入管12を設けると共に、モニタ部18、ロッド本体部掘削用ビット19並びに注入ロッド本体部の下方部に掘削翼ビット20を具備した掘削翼17を有する硬化剤注入ロッド10において、両注入管11、12がそれぞれ掘削翼先端部に設けたノズル部まで連通し、かつ該掘削翼部の両注入管内壁にそれぞれスパイラル溝を設けた地盤改良体造成装置を概略断面図的に示したものである。 That is, provided with a pressurized gas injection tube 12 around one curing agent injection pipe 11 and the infusion pipe, monitor 18, the drilling blade bit into the lower portion of the rod main body drill bit 19 and infusion rod body portion in the curing agent injection rod 10 having a drilling blade 17 provided with the 20 communicates to a nozzle unit for both injection tube 11 is provided in the drilling wing tip respectively, and the spiral on both injection tube wall 該掘 Kezutsubasa portion the soil improvement material reclamation device provided with a groove illustrates schematically cross-sectional pictorial.

【0007】ここで、掘削翼部の硬化剤注入管内壁に設けられたスパイラル溝13の螺子山は、緩やかに大きく設けるのが望ましい。 [0007] Here, threads of the spiral grooves 13 provided in the curing agent injection pipe wall of the excavation blade portion is desirably provided moderately increased. 注入管11へ高圧注入された硬化剤が該掘削翼17へ至った時、螺子山との摩擦等によりスピードを必要以上に減退させず、核ノズル15からの高圧噴射を効率よく行なうためである。 When curing agents are high pressure injected into the injection tube 11 is led to 該掘 Kezutsubasa 17, without decline unnecessarily speed due to friction with the threads, it is to perform efficiently high-pressure injection from the nucleus nozzle 15 .

【0008】一方、掘削翼部の加圧気体注入管内壁に設けられたスパイルラル溝14の螺子山は、上記硬化剤の場合よりも密であってもよく、また、硬化剤注入管内壁の螺子山と、加圧気体注入管内壁の螺子山とは、同一方向であっても逆方向に設けてもよい。 On the other hand, the screw thread of Supairuraru groove 14 provided in the pressurized gas injection tube wall of the excavation blade portion may be a dense than in the curing agent, also screw curing agent injection pipe wall and mountain, and the threads of the pressurized gas injection tube wall may be provided even in the same direction in the opposite direction.

【0009】そして、スパイラル溝13により回転機能を与えられた硬化剤は、掘削翼17の先端部に設けられた核ノズル15より、また、スパイラル溝14により回転する加圧気体は、周囲ノズル16より、それぞれ対象地盤へ強力噴射されることとなる。 [0009] Then, a curing agent given rotation function by the spiral groove 13, than nuclei nozzles 15 provided at the distal end of the excavating blade 17, also pressurized gas to be rotated by the spiral groove 14, around the nozzle 16 more, the it is respectively strongly injected to a subject ground. 即ち、該硬化剤は、 In other words, curing agent,
その周囲を加圧気体により包合される形となるため、硬化剤のみの噴射の場合よりも、硬化剤の地盤中への噴射がより瞬時に遠方且つ広範囲へ確実に行なえることとなる。 Since the form of being engaged wrapping the periphery by pressurized gas, than in the case of injection of the curing agent but also, the injection into the ground of the curing agent is reliably and thus perform its far and wide to more instantaneously. 尚、硬化剤を加圧気体(エア)にて包合した場合の効果については、先行する発明において詳細を開示済であるが、本発明にあっては、これら硬化剤及び加圧気体がいずれもスパイラル溝より回転機能を与えられていることと相まって、噴射力、掘削力一においても一層優れた結果をもたらすこととなる。 It should be noted that the effect in the case of combined packaging the curing agent in pressurized gas (air), but is already disclosed the details in the preceding invention, in the present invention, the curing agent and the pressurized gas are all also together with the fact that given the rotation function from the spiral groove, the injection force, and thus result in a more excellent results in drilling force scratch.

【0010】ちなみに、ここで、該加圧気体の噴射は、 [0010] By the way, here, the injection of the pressurized gas body,
硬化剤の噴射と同時に行なうことも、時差を設けて行なうことも可能であり、掘削対象地盤の状況ないし掘削段階に応じて自由に調整できる。 Also be carried out simultaneously with the injection of the curing agent, it is also possible to carry out provided the time difference can be freely adjusted depending on the situation or drilling stage of excavated ground.

【0011】図1(B)は、同図(A)におけるA− [0011] FIG. 1 (B), in FIG. (A) A-
A'断面図を示したものである。 Shows the A 'cross section. 即ち、本実施例にあっては、硬化剤注入ロッド10において、硬化剤注入管1 That is, in this embodiment, the curing agent injected rod 10, hardener injection tube 1
1と加圧気体注入管12とは、同心構造を有し、この状態は、両注入管が連通している掘削翼17においても同様であり、両注入管は、同心構造を維持しつつ、それぞれ掘削翼17の先端部に設けられた核ノズル15、周囲ノズル16に至っている。 1 and the pressurized gas injection tube 12 has a concentric structure, this state, both the injection tube is the same in drilling blades 17 in communication, both the injection tube, while maintaining concentric structure, nuclear nozzles 15 which are respectively provided at the distal end portion of the drilling blades 17, and reaches the surrounding nozzle 16.

【0012】他の実施例(図示せず)として、上記加圧気体注入管を硬化剤注入管の脇に設けることも可能である。 [0012] As another example (not shown), it is also possible to provide the pressurized gas injection tube on the side of the curing agent injection tube. また、硬化剤注入管を複数設けることも可能であり、この場合には、各々の硬化剤注入管の周囲又は脇に、加圧気体注入管を設ける構成となる。 It is also possible to provide a plurality of curing agent injection pipe, in this case, the periphery or the side of each of the curing agent injection pipe, a configuration in which a pressurized gas injection tube. 更に、硬化剤及び加圧気体を回転させるためのそれぞれのスパイラル溝13、14は、掘削翼部のみならず、硬化剤注入ロッド本体部にも設けてもよい。 Furthermore, each of the spiral grooves 13, 14 for rotating the curing agent and pressurized gas, not drilling wings only, may be provided in the curing agent injection rod body portion. この場合、ロッド本体部内へ注入された硬化剤や加圧気体は、掘削翼17へ圧送される前に即垂直注入管内にて回転されることになる。 In this case, the curing agent and pressurized gas which is injected into the rod body portion will be rotated by immediate vertical injection tube before being pumped to the drilling blades 17.

【0013】図2は、本発明に係る一実施例の実施状況を示した概略斜視図である。 [0013] Figure 2 is a schematic perspective view showing the implementation of one embodiment according to the present invention. 即ち、注入ロッド10の下方部に設けられた掘削翼17の側端部の一方を比較的厚く、他方を比較的薄く形成し、その薄い側端部に掘削翼ビット20を設けてある。 That is, one relatively thick side edge of the drilling blade 17 provided at the lower portion of the injection rod 10, the other relatively thin form, is provided with excavation blades bit 20 to its thin side edges. そして、通常注入ロッド10 And, usually injection rod 10
は掘削翼ビット20を有する方向(X方向)に回転し、 Rotates in the direction (X direction) having a drilling blade bits 20,
当該掘削翼ビット20と注入ロッド先端部に設けられたビット19により対象地盤を掘削しながら所定深度まで進行する。 It proceeds up to a predetermined depth while drilling target ground by bits 19 provided on the injection rod tip the excavating blade bit 20. そして、所定深度まで掘削した段階で掘削翼17の先端部に設けられた核ノズル15から超高圧にて硬化剤を、また、周囲ノズル16から加圧気体を噴射しつつ注入ロッド10を回転上昇させることとなる。 Then, a curing agent in ultra-high pressure from the nucleus nozzle 15 provided at the distal end of the excavating blade 17 at the stage of excavation to a predetermined depth, also rotation increase the injection rod 10 while jetting from the surrounding nozzle 16 pressurized gas and thus to. 即ち、該硬化剤は、掘削翼内の硬化剤注入管内壁に設けられたスパイラル溝により回転するわけであるが、同様にスパイラル溝を有する加圧気体注入管内壁を経て回転機能を与えられた加圧気体に包合されると共に矢印Yのように回転しながらZ方向へ噴射されることとなる。 That is, curing agent, but is not rotated by the spiral grooves provided in the curing agent injection pipe wall in the drilling blades was given rotation function via pressurized gas injection tube wall also having a spiral groove so that the ejected in the Z direction while rotating as shown by an arrow Y with the engaged follicles pressurized gas. 硬化剤の場合よりも、一層確実且つ広範囲に、硬化剤が強制充填されることとなる。 Than for the curing agent may become more reliably and extensively, the curing agent is forced filled. 勿論、硬化剤注入管11と加圧気体注入管12のスパイラル溝において、螺子山を逆方向に設けた構成にあっては、硬化剤と加圧気体とは互いに逆方向に回転しつつ、同様にZ方向へ噴射されることとなる。 Of course, the spiral groove of the curing agent injection pipe 11 and the pressurized gas injection tube 12, in the configuration in which the screw thread in the opposite direction, while rotating in opposite directions to each other and the curing agent and the pressurized gas, like so that the ejected in the Z direction.

【0014】 [0014]

【発明の効果】本発明によれば、硬化剤及び加圧気体の回転噴射と、加圧気体の包合によるいわゆるリフト効果とが相まって、先行技術をさらに一歩進め、一層強靭な上質の地盤改良体が瞬時かつ確実に実現できる。 According to the present invention, the rotating spraying curing agent and pressurized gas, a so-called lift effect condition for inclusion of the pressurized gas together, one step further prior art, even tough fine ground improvement body can be realized instantaneously and reliably. また、 Also,
スパイラル溝を利用した硬化剤並びに加圧気体の回転噴射のタイミングを対象地盤の性質に応じて自在に調整することにより、地盤の状況、掘削段階に応じた確実かつ均一な地盤改良体を造成することができる。 By freely adjusted depending on the nature of the target ground timing rotating spraying curing agent and pressurized gas utilizing a spiral groove, to Development Ground circumstances, a reliable and uniform soil improvement material according to the drilling stage be able to.

【0015】 [0015]

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1(A)】 本発明の第1実施例を示す概略断面図である。 It is a schematic sectional view showing a first embodiment of FIG. 1 (A) of the present invention.

【図1(B)】 図1(A)におけるA−A'断面図である。 FIG 1 (B) is an A-A 'cross sectional view in FIG. 1 (A).

【図2】 本発明の実施状態を示す概略斜視図である。 Figure 2 is a schematic perspective view showing an exemplary state of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

10 硬化剤注入ロッド 11 硬化剤注入管 12 加圧気体注入管 13、14 スパイラル溝 15 核ノズル 16 周囲ノズル 17 掘削翼 18 モニタ部 19 ロッド本体部掘削用ビット 20 掘削翼ビット 21 硬化剤 22 加圧気体 10 curing agent injection rod 11 curing agent injection pipe 12 pressurized gas injection tube 13, 14 a spiral groove 15 nuclear nozzle 16 around the nozzle 17 drilling blades 18 monitor 19 the rod body portion drill bit 20 drilling blades bit 21 curing agent 22 pressurized gas

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 1又は2以上の硬化剤注入管(11)及び加圧気体注入管(12)を内蔵すると共に、モニタ部(18)、ロッド本体部掘削用ビット(19)並びに注入ロッド本体部の下方部に掘削翼ビット(20)を具備した掘削翼(17)を有する硬化剤注入ロッド(10) [Claim 1] with a built-in one or more of the curing agent injection pipe (11) and the pressurized gas injection tube (12), a monitor unit (18), the rod body portion drilling bit (19) as well as injection rod body part of the curing agent injection rod with a drilling blades (17) provided with the drill blades bit (20) to the lower portion (10)
    において、 該加圧気体注入管(12)を該硬化剤注入菅(11)に近接して配置し、両注入管がそれぞれ掘削翼先端部に設けたノズル部まで連通していることを特徴とする地盤改良体造成装置。 In a feature that it the pressurized pressure gas injection tube (12) in proximity to the curing agent injection Kan (11) is arranged, communicating to the nozzle portion both injection tube is provided in the drilling wing tip respectively soil improvement material reclamation device that.
  2. 【請求項2】 請求項1の硬化剤注入管(11)及び加圧気体注入管(12)内にそれぞれスパイラル溝を設けたことを特徴とする地盤改良体造成装置。 Wherein wherein the curing agent injection pipe sections 1 (11) and the pressurized gas inlet tube (12) soil improvement material reclamation apparatus characterized in that a spiral groove respectively within.
  3. 【請求項3】 1又は2以上の硬化剤注入管(11)及び加圧気体注入管(12)を内蔵すると共に、モニタ部(18)、ロッド本体部掘削用ビット(19)並びに注入ロッド本体部の下方部に掘削翼ビット(20)を具備した掘削翼(17)を有する硬化剤注入ロッド(10) 3. with a built-in one or more of the curing agent injection pipe (11) and the pressurized gas injection tube (12), a monitor unit (18), the rod body portion drilling bit (19) and infusion rod body part of the curing agent injection rod with a drilling blades (17) provided with the drill blades bit (20) to the lower portion (10)
    を用いた造成工法において、 硬化剤注入ロッドの本体部に設けられた1又は2以上の硬化剤注入管(11)に超高圧にて注入された硬化剤は、更に掘削翼(17)に伸びた硬化剤注入管に至り、 In reclamation method using a curing agent which is injected at ultra high pressure to one or more curing agent injection tube provided in the main body portion of the curing agent injection rod (11) extends further drilling blades (17) and reaches the curing agent injection pipe,
    該掘削翼内の硬化剤注入管内壁に設けられたスパイラル溝により該硬化剤は回転するとともに、掘削翼(17) With curing agents is rotated by the spiral grooves provided in the curing agent injection pipe wall in 該掘 Kezutsubasa, drilling blade (17)
    内の加圧気体注入管内壁に設けられたスパイラル溝により回転する加圧気体により包合されることにより、核ノズルより噴射された硬化剤は、掘削対象物に強力に噴射させることを特徴とする地盤改良体造成工法。 By being engaged wrapped by pressurized gas which is rotated by the spiral grooves provided in pressurized gas injection tube wall of the inner, curing agent injected from the nucleus nozzle, and characterized in that strongly injected drilling object soil improvement material reclamation method to be.
JP3291030A 1991-08-19 1991-08-19 Soil improvement material reclamation method and apparatus Expired - Lifetime JPH0826539B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3291030A JPH0826539B2 (en) 1991-08-19 1991-08-19 Soil improvement material reclamation method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3291030A JPH0826539B2 (en) 1991-08-19 1991-08-19 Soil improvement material reclamation method and apparatus

Publications (2)

Publication Number Publication Date
JPH0649834A true JPH0649834A (en) 1994-02-22
JPH0826539B2 JPH0826539B2 (en) 1996-03-13

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JP3291030A Expired - Lifetime JPH0826539B2 (en) 1991-08-19 1991-08-19 Soil improvement material reclamation method and apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145579A (en) * 1996-05-13 2000-11-14 Km Europa Metal Ag Liquid-cooled mould
US6902352B2 (en) * 2003-03-04 2005-06-07 Yong-Hyun Kim Soft ground improvement system
JP2010070930A (en) * 2008-09-17 2010-04-02 Nit:Kk Method and device for injecting ground hardening material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113012A (en) * 1974-02-15 1975-09-04
JPS57104714A (en) * 1980-12-23 1982-06-29 N I T:Kk Improvement of ground
JPS6272810A (en) * 1985-05-21 1987-04-03 Fukudagumi:Kk Ground improvement work
JPS63289110A (en) * 1987-05-20 1988-11-25 N I T:Kk Ground improving work by spiral jet flow

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113012A (en) * 1974-02-15 1975-09-04
JPS57104714A (en) * 1980-12-23 1982-06-29 N I T:Kk Improvement of ground
JPS6272810A (en) * 1985-05-21 1987-04-03 Fukudagumi:Kk Ground improvement work
JPS63289110A (en) * 1987-05-20 1988-11-25 N I T:Kk Ground improving work by spiral jet flow

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145579A (en) * 1996-05-13 2000-11-14 Km Europa Metal Ag Liquid-cooled mould
US6902352B2 (en) * 2003-03-04 2005-06-07 Yong-Hyun Kim Soft ground improvement system
JP2010070930A (en) * 2008-09-17 2010-04-02 Nit:Kk Method and device for injecting ground hardening material

Also Published As

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