JPH09217338A - Hardening material mixing method - Google Patents
Hardening material mixing methodInfo
- Publication number
- JPH09217338A JPH09217338A JP2420796A JP2420796A JPH09217338A JP H09217338 A JPH09217338 A JP H09217338A JP 2420796 A JP2420796 A JP 2420796A JP 2420796 A JP2420796 A JP 2420796A JP H09217338 A JPH09217338 A JP H09217338A
- Authority
- JP
- Japan
- Prior art keywords
- hardening material
- injection
- pipe
- injection pipe
- ground
- 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.)
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Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Foundations (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、硬化材混入工法の
一つで、地震による地盤液状化の対策としても有効とさ
れる地中壁の造成をはじめとする地盤改良に用いるもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is one of the hardening material-mixing construction methods, and is used for ground improvement such as construction of underground wall which is effective as a countermeasure against ground liquefaction due to an earthquake.
【０００２】[0002]
【従来の技術】従来の対象地盤に注入管を挿入し硬化材
を高圧で噴射して硬化材混入層を造成する硬化材混入工
法としてＣＣＰ工法、ＪＳＧ工法あるいはＣＪＧ工法な
どがある。いずれの工法も注入管を回転上昇させながら
注入管の下端の噴射ノズルから硬化材を高圧噴射して、
円柱状の硬化材混入層を造成していた。2. Description of the Related Art Conventionally, there are a CCP method, a JSG method, a CJG method, and the like as a hardening material mixing method for forming a hardening material mixing layer by inserting an injection pipe into a target ground and injecting a hardening material at a high pressure. In either method, while rotating and raising the injection pipe, high-pressure injection of the hardening material from the injection nozzle at the bottom of the injection pipe
A column-shaped hardening material mixed layer was formed.
【０００３】[0003]
【発明が解決しようとする課題】上記の従来の硬化材混
入工法は、注入管を回転上昇させながら注入管下端の噴
射ノズルから硬化材を高圧噴射して、円柱状の硬化材混
入層を造成する仕組みであることから、一定範囲の地盤
を改良する際には、円柱状の硬化材混入層を連ねるため
に重複部分や造成不要部分の造成も行うため、その分工
費も割高となり、広範囲の地盤改良には不向きであっ
た。In the above-mentioned conventional hardening material mixing method, the hardening material is injected at a high pressure from the injection nozzle at the lower end of the injection tube while the injection tube is rotated and raised to form a cylindrical hardening material mixing layer. Therefore, when improving the ground in a certain range, overlapping parts and unnecessary parts are created to connect the column-shaped hardening material mixed layers. It was not suitable for ground improvement.
【０００４】また、地中壁を造成する際にも、従来の硬
化材混入工法では接続時の重複部分や造成不要部分の無
駄が非常に多くなるため、経済的ではなかった。このた
め、広範囲の改良や液状化防止用の壁状造成体を低価格
で施工できる硬化材混入工法が待ち望まれている。Further, even when the underground wall is formed, the conventional hardening material-mixed construction method is not economical because the overlapped portion at the time of connection and the unnecessary portion of the formation become very large. For this reason, there is a long-felt demand for a hardening material-mixing method capable of constructing a wall-shaped structure for wide-range improvement and liquefaction prevention at low cost.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明は、上記
の事情に鑑み、重複部分や造成不要部分の無駄が少な
く、低価格の硬化材注入工法とすべく、対象地盤に注入
管を挿入し硬化材を高圧で噴射して地盤に硬化材混入層
を造成する硬化材混入工法において、注入管の先端部に
噴射管を揺動自在に設け、噴射管先端に噴射ノズルを注
入管の接線方向に設け、噴射管を左右（前後）に揺動さ
せて噴射ノズル位置を移動させながら硬化材を噴射ノズ
ルから高圧で噴射させ、徐々に注入管を引き抜きながら
地盤に硬化材混入層を造成する硬化材混入工法とした。In view of the above-mentioned circumstances, the present invention inserts an injection pipe into the target ground in order to achieve a low-priced hardening material injection method with less waste of overlapping portions and unnecessary formation portions. In the hardening material mixing method in which the hardening material is sprayed at high pressure to create a hardening material mixing layer on the ground, the injection pipe is swingably provided at the tip of the injection pipe, and the injection nozzle is attached to the injection pipe tangent to the injection pipe. Direction, and rock the injection pipe to the left and right (back and forth) to move the position of the injection nozzle to inject the hardening material from the injection nozzle at high pressure, and gradually pull out the injection tube to create a hardening material mixed layer on the ground. Hardened material mixed construction method.
【０００６】また、本発明は、対象地盤に注入管を挿入
し硬化材を高圧で噴射して地盤に硬化材混入層を造成す
る硬化材混入工法において、噴射ノズルを注入管の接線
方向になるように設定した回転盤を注入管先端部に設
け、回転盤を回転させることにより噴射ノズル位置を移
動させながら硬化材を噴射ノズルから高圧で噴射させ、
徐々に注入管を引き抜きながら地盤に硬化材混入層を造
成する硬化材混入工法とした。Further, according to the present invention, in a hardening material mixing construction method in which an injection pipe is inserted into a target ground and a hardening material is injected at a high pressure to form a hardening material mixing layer on the ground, the injection nozzle is in the tangential direction of the injection pipe. The rotating disc set in this way is provided at the tip of the injection tube, and the rotating disc is rotated to move the injection nozzle position to inject the curing material at high pressure from the injection nozzle,
A hardening material mixing method was used in which a hardening material mixing layer was formed in the ground while gradually pulling out the injection pipe.
【０００７】さらに、本発明は、低価格の硬化材混入工
法とすべく、対象地盤に注入管を挿入し硬化材を高圧で
噴射して地盤に硬化材混入層を造成する硬化材混入工法
において、注入管下端先端部に設けた噴射ノズルを左右
（前後）に移動させながら硬化材を高圧で噴射し、地盤
に硬化材混入層を造成することにより、これと同一噴射
量で注入管を回転させながら注入管下端の噴射ノズルか
ら放射状に噴射しつつ注入管を引き上げて円柱状の硬化
材混入層を造成する硬化材混入工法の造成面積の２倍の
造成面積とする硬化材混入工法とした。Furthermore, the present invention provides a method for mixing a hardening material at a low cost in a hardening material mixing method in which an injection pipe is inserted into the target ground and the hardening material is injected at a high pressure to form a hardening material mixed layer on the ground. , The injection nozzle installed at the lower end of the injection pipe is moved left and right (back and forth) to inject the hardening material at a high pressure, and the hardening material mixed layer is created in the ground to rotate the injection tube with the same injection amount. While making the injection pipe at the lower end of the injection pipe radial, the injection pipe is pulled up to form a hardened material mixture layer having a columnar shape. The hardening material mixing method is an area twice as large as the area of the hardening material mixing method. .
【０００８】[0008]
【発明の実施の態様】本発明を添付する図面に示す具体
的な実施例により以下詳細に説明する。図１に示すよう
に、注入管１内に硬化材を導入する金属管２を収容し、
金属管２の先端にヒンジなどもしくは可撓性を有するゴ
ム管などで噴射管４を揺動可能にして接続し、噴射管４
の先端には注入管１の接線方向を向く噴射ノズル５を設
ける。噴射ノズル５は噴射管４が揺動した際、注入管１
の先端より外方に位置するように設定しておく。注入管
１の金属管２、噴射管４を経て噴射ノズル５に入った硬
化材は例えば２００〜６００ｋｇｆ／ｃｍ2 程度の高圧
で地中に噴射される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings. As shown in FIG. 1, a metal tube 2 for introducing a hardening material is housed in an injection tube 1,
The injection pipe 4 is swingably connected to the tip of the metal pipe 2 with a hinge or a flexible rubber pipe.
An injection nozzle 5 that faces the tangential direction of the injection tube 1 is provided at the tip of the. The injection nozzle 5 is provided with the injection pipe 1 when the injection pipe 4 swings.
Set so that it is located outside the tip of the. The hardening material that has entered the injection nozzle 5 through the metal pipe 2 of the injection pipe 1 and the injection pipe 4 is injected into the ground at a high pressure of, for example, about 200 to 600 kgf / cm 2 .
【０００９】この注入管１を使用した硬化材混入工法に
ついて説明する。まず、対象地盤にボーリングマシンあ
るいはアースオーガなどの適宜手段により所要の深度ま
で削孔を設ける。また注入管で削孔してもよい。次に、
削孔内に前記注入管１を挿入する。続いて、金属管２、
噴射管４を経た高圧のセメントミルクなどの硬化材を噴
射ノズル５より噴射しながら噴射管４を適宜機械的手段
により左右（前後）に揺動させる。硬化材の到達距離は
軟弱地盤で圧力４００ｋｇｆ／ｃｍ2 の場合１〜２ｍ程
度、軟岩で圧力６００ｋｇｆ／ｃｍ2 で１ｍ以下であ
る。A method of mixing a hardening material using the injection pipe 1 will be described. First, a hole is formed in a target ground to a required depth by a boring machine, an earth auger, or another appropriate means. Moreover, you may drill with an injection pipe. next,
The injection pipe 1 is inserted into the hole. Then, metal tube 2,
While injecting a hardening material such as high-pressure cement milk that has passed through the injection pipe 4 from the injection nozzle 5, the injection pipe 4 is appropriately swung left and right (forward and backward) by a mechanical means. Reach of curing material 1~2m about the case of a pressure 400 kgf / cm 2 in soft ground is 1m or less at a pressure 600 kgf / cm 2 in soft rocks.
【００１０】これで、第一ステップの噴射が終了であ
る。なお、硬化材の噴射は硬化材単独のみの噴射もある
が圧縮空気と共に噴射することもある。次に、注入管１
を例えば２．５ｃｍ引き上げる。これにより噴射のステ
ップをアップさせる。また、噴射管４を揺動させながら
噴射ノズル５から硬化材の噴射を続ける。すると、前記
と同様に硬化材混入層が造成される。This is the end of the injection in the first step. In addition, as for the injection of the hardening material, there is an injection of only the hardening material alone, but it may also be injected together with the compressed air. Next, the injection tube 1
Is pulled up, for example, by 2.5 cm. This increases the injection step. Further, the injection of the hardening material from the injection nozzle 5 is continued while the injection pipe 4 is swung. Then, a hardening material mixed layer is formed in the same manner as described above.
【００１１】同様にして所要の高さまで注入管１を引き
上げてステップアップさせ、図２の斜視図のように硬化
材混入層Ｖ1 を造成する。なお、硬化材混入層Ｖ1 が１
回の硬化材の噴射で充分でない場合は、２回硬化材を同
一地盤に噴射させることもできる。この硬化材混入層Ｖ
1 を左右方向に連ねようとする場合、図２の斜視図のよ
うに硬化材混入層Ｖ1 の相隣なる箇所に同様にして硬化
材混入層Ｖ2 を造成して連接する。[0011] Similarly to step up raising the injection tube 1 to a required height, to construct a cured material mixed layer V 1 as a perspective view of FIG. Note that the hardening material mixed layer V 1 is 1
If the injection of the hardening material twice is not sufficient, the hardening material can be injected twice on the same ground. This cured material mixed layer V
When the 1's are to be connected to each other in the left-right direction, the hardener-containing layer V 2 is similarly formed and connected to adjacent portions of the hardener-containing layer V 1 as shown in the perspective view of FIG.
【００１２】次に、図３および図４に示す発明について
説明する。図３では注入管１１の先端に噴射管１４が注
入管１１の延長線上に枢着され、噴射管１４の先端に噴
射ノズル１５が注入管１１の接線方向を向くようにして
設けられている。噴射管１４を注入管１１の延長線上に
枢着しておくと、高圧の硬化材を円滑に送ることができ
る。なお、符号１６は注入管１１を上下（前後）動また
は回転させるマシンである。Next, the invention shown in FIGS. 3 and 4 will be described. In FIG. 3, an injection pipe 14 is pivotally attached to the tip of the injection pipe 11 on an extension of the injection pipe 11, and an injection nozzle 15 is provided at the tip of the injection pipe 14 so as to face the tangential direction of the injection pipe 11. When the injection pipe 14 is pivotally mounted on an extension of the injection pipe 11, a high-pressure hardening material can be smoothly fed. Reference numeral 16 is a machine that moves or rotates the injection pipe 11 up and down (back and forth).
【００１３】削孔した後、図３に示すようにマシン１６
により注入管１１を造成位置下端まで挿入する。次に、
図４に示すように、噴射管１４を油圧ポンプなどの機械
的手段によって矢印方向に揺動させながら、噴射ノズル
１５から硬化材を噴射させ、注入管１１を引き上げて硬
化材混入層Ｖを造成する。なお、硬化材の噴射は硬化材
単独のみの噴射もあるが圧縮空気と共に噴射することも
ある。After drilling, as shown in FIG.
To insert the injection tube 11 to the lower end of the formation position. next,
As shown in FIG. 4, while the injection pipe 14 is swung in the direction of the arrow by a mechanical means such as a hydraulic pump, a hardening material is injected from the injection nozzle 15, and the injection pipe 11 is pulled up to form a hardened material mixed layer V. I do. In addition, as for the injection of the hardening material, there is an injection of only the hardening material alone, but it may also be injected together with the compressed air.
【００１４】次に、図５の発明について説明する。削孔
した後、注入管２１の先端に噴射ノズル２５の方向が注
入管２１の接線方向になるように設定した回転盤２０を
取付けた注入管２１を造成位置下端まで挿入し、回転盤
２０を自動回転させながら硬化材を噴射ノズル２５から
高圧で噴射させ、注入管２１を徐々に引き抜いて地盤に
硬化材を混入させて図５に示すように、硬化材混入層Ｖ
を造成するようにした。Next, the invention of FIG. 5 will be described. After drilling, the injection tube 21 having the rotary disk 20 set so that the direction of the injection nozzle 25 is the tangential direction of the injection tube 21 at the tip of the injection tube 21 is inserted to the lower end of the formation position, and the rotary disk 20 is fixed. While automatically rotating, the hardening material is injected from the injection nozzle 25 at a high pressure, the injection pipe 21 is gradually pulled out, and the hardening material is mixed into the ground. As shown in FIG.
Was created.
【００１５】なお、硬化材の噴射は硬化材単独のみの噴
射もあるが圧縮空気と共に噴射することもある。上記で
はそれぞれ本工法の垂直方向の実施例を示したが、同様
の装置と手順で水平方向や斜方向に本工法を用いること
もできる。次に、図６および図７の発明について説明す
る。The curing agent may be injected only with the curing agent alone, but may also be injected with compressed air. In the above, examples of the present method in the vertical direction are shown. However, the present method can be used in a horizontal direction or an oblique direction by the same apparatus and procedure. Next, the invention of FIGS. 6 and 7 will be described.
【００１６】従来の硬化材混入工法は、図６に示すよう
に注入管３１を回転させながら注入管３１の先端の噴射
ノズル３５から硬化材を噴射させ地盤に硬化材を混入さ
せて硬化材注入層Ｖ3 を造成していた。ここで、硬化材
の注入管３１の中心から到達できる距離をｒとすると、
硬化材先端軌跡長は、その円周の２πｒであり、硬化材
によって造成される造成面積は、半径ｒの円の面積のπ
ｒ2 である。In the conventional hardening material mixing method, as shown in FIG. 6, while the injection tube 31 is rotated, the hardening material is injected from the injection nozzle 35 at the tip of the injection tube 31 to mix the hardening material into the ground to inject the hardening material. Layer V 3 was being created. Here, assuming that the distance that can be reached from the center of the hardening material injection pipe 31 is r,
The tip length of the hardened material is 2πr of its circumference, and the area created by the hardened material is π of the area of a circle of radius r.
r 2 .
【００１７】一方、本発明の図７に示す直線方向に移動
する噴射ノズル３５の軌跡長を、前記従来の円柱状の硬
化材混入層を造成する硬化材混入工法の硬化材先端軌跡
長の長さと同じ距離の２πｒに設定すると、同じその距
離を移動をさせた際、硬化材の到達する距離は前記の場
合と同様ｒであるので、本発明により造成される面積Ｖ
4 は、硬化材先端軌跡長２πｒと硬化材の到達する距離
ｒの積となり、Ｖ4 ＝２πｒ×ｒ＝２πｒ2 となる。こ
こで、Ｖ4 をＶ3 で割ると、Ｖ4 ／Ｖ3 ＝２πｒ2 ／π
ｒ2 ＝２となり、本発明による直線移動によって造成す
る硬化材混入工法が従来の円柱状の硬化材混入層を造成
する硬化材混入工法に比べて２倍の造成面積を達成する
ことができ、コスト安となる。実質的には図８に示すよ
うに、地中壁接続のロス部分Ｖ5 ・Ｖ6 を少なくするこ
とができ、１／３程度のコストで施工が可能である。On the other hand, the locus length of the injection nozzle 35 which moves in the linear direction shown in FIG. 7 of the present invention is set to the length of the locus length of the hardening material tip of the hardening material mixing method for forming the conventional cylindrical hardening material mixing layer. When the distance is set to 2πr, which is the same as the above distance, the distance reached by the hardening material when moving the same distance is r as in the case described above, so the area V formed by the present invention is
4 is the product of the path length 2πr of the tip of the hardened material and the distance r reached by the hardened material, and V 4 = 2πr × r = 2πr 2 . Here, when V 4 is divided by V 3 , V 4 / V 3 = 2πr 2 / π
Since r 2 = 2, it is possible to achieve an area twice as large as that of the hardening material-mixed construction method for forming a linear columnar hardening material-mixed layer by the linear movement according to the present invention, The cost is low. Substantially, as shown in FIG. 8, the loss portions V 5 and V 6 of the underground wall connection can be reduced, and the construction can be performed at a cost of about 1/3.
【００１８】[0018]
【発明の効果】本発明は、上述のような構成であるの
で、広範囲の改良や液状化対策等の地中壁の造成をはじ
めとする地盤改良を行う低価格の硬化材混入工法を提供
できる。EFFECTS OF THE INVENTION Since the present invention has the above-mentioned constitution, it is possible to provide a low-priced hardening material-mixing method for improving the ground including improvement of a wide range and formation of an underground wall for liquefaction countermeasures. .
【図１】本発明の硬化材混入工法に使用する具体的一実
施例の縦断面図である。FIG. 1 is a vertical cross-sectional view of a specific example used in a method for mixing a hardening material according to the present invention.
【図２】図１により造成された硬化材混入層を説明する
概要を示す斜視図である。FIG. 2 is a perspective view showing an outline for explaining a hardening material mixed layer formed according to FIG. 1;
【図３】本発明の硬化材混入工法に使用する具体的一実
施例の正面図である。FIG. 3 is a front view of a specific example used in the hardening material mixing method of the present invention.
【図４】図３の具体的一実施例により施工された状態を
示す斜視図である。FIG. 4 is a perspective view showing a state in which construction is performed according to a specific example of FIG.
【図５】本発明の具体的一実施例より施工された状態を
示す斜視図である。FIG. 5 is a perspective view showing a state in which construction is performed according to a specific example of the present invention.
【図６】従来の円柱状硬化材混入層を造成する硬化材混
入工法を示す平面図である。FIG. 6 is a plan view showing a conventional hardening material mixing method for forming a columnar hardening material mixing layer.
【図７】本発明の噴射ノズルを直線方向に移動させなが
ら硬化材を噴射して硬化材混入層を造成する硬化材混入
工法の平面図である。FIG. 7 is a plan view of a hardening material mixing method for forming a hardening material mixing layer by injecting a hardening material while moving the injection nozzle of the present invention in a linear direction.
【図８】円柱状硬化材混入層を造成する硬化材注入工法
による地中壁造成の際の接続時のロス部分及び造成不要
部分を示す平面図である。FIG. 8 is a plan view showing a loss portion and a formation unnecessary portion at the time of connection at the time of forming an underground wall by a hardening material injection method for forming a columnar hardening material mixed layer.
１・１１・２１・３１…注入管 ４・１４…噴射管 ２０…回転盤 ５・１５・２５・３５…噴射ノズル Ｖ…硬化材混入層 1.11.21.31 ... injection pipe 4.14 ... injection pipe 20 ... rotary disk 5.15.25.35 ... injection nozzle V ... cured material mixed layer
Claims (3)
で噴射して地盤に硬化材混入層を造成する硬化材混入工
法において、注入管の先端部に噴射管を揺動自在に設
け、噴射管先端に噴射ノズルを注入管の接線方向に設
け、噴射管を左右（前後）に揺動させて噴射ノズル位置
を移動させながら硬化材を噴射ノズルから高圧で噴射さ
せ、徐々に注入管を引き抜きながら地盤に硬化材混入層
を造成する硬化材混入工法。1. In a hardening material mixing method in which an injection tube is inserted into a target ground and a hardening material is injected at a high pressure to form a hardening material mixing layer in the ground, an injection tube is swingably provided at the tip of the injection tube. , The injection nozzle is provided at the tip of the injection pipe in the tangential direction of the injection pipe, and while the injection pipe is swung left and right (forward and backward) to move the position of the injection nozzle, the hardening material is injected at high pressure from the injection nozzle, and the injection pipe is gradually added. A hardening material mixing method that creates a hardening material mixing layer on the ground while pulling out.
で噴射して地盤に硬化材混入層を造成する硬化材混入工
法において、噴射ノズルを方向が注入管の接線方向にな
るように設定した回転盤を注入管先端部に設け、回転盤
を回転させることにより噴射ノズル位置を移動させなが
ら硬化材を噴射ノズルから高圧で噴射させ、徐々に注入
管を引き抜きながら地盤に硬化材混入層を造成する硬化
材混入工法。2. In a hardening material mixing method in which an injection pipe is inserted into a target ground and a hardening material is injected at a high pressure to form a hardening material mixing layer on the ground, the direction of the injection nozzle is set to be tangential to the injection pipe. The set rotating plate is installed at the tip of the injection pipe, and the rotating plate is rotated to move the injection nozzle position to inject the hardening material at high pressure from the injection nozzle, and gradually pull out the injection pipe to mix the hardening material into the ground. A method of mixing hardener to create
で噴射して地盤に硬化材混入層を造成する硬化材混入工
法において、注入管先端部に設けた噴射ノズルを左右
（前後）に移動させながら硬化材を高圧で噴射し、地盤
に硬化材混入層を造成することにより、これと同一噴射
量で注入管を回転させながら注入管下端の噴射ノズルか
ら放射状に噴射しつつ注入管を引き上げて円柱状の硬化
材混入層を造成する硬化材混入工法の造成面積の２倍の
造成面積とする硬化材混入工法。3. In a hardening material mixing method in which an injection pipe is inserted into a target ground and a hardening material is injected at high pressure to form a hardening material mixing layer on the ground, the injection nozzles provided at the tip of the injection pipe are left and right (front and back). While injecting the curing material at a high pressure while moving it to the ground, and forming a layer containing the curing material in the ground, while rotating the injection tube at the same injection amount as this, the injection nozzle at the lower end of the injection tube while radially injecting the injection tube The hardening material mixing method that pulls up to form a columnar hardening material mixing layer and has an area twice as large as the area of the hardening material mixing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02420796A JP3351948B2 (en) | 1996-02-09 | 1996-02-09 | Hardening material mixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02420796A JP3351948B2 (en) | 1996-02-09 | 1996-02-09 | Hardening material mixing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09217338A true JPH09217338A (en) | 1997-08-19 |
| JP3351948B2 JP3351948B2 (en) | 2002-12-03 |
Family
ID=12131869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02420796A Expired - Lifetime JP3351948B2 (en) | 1996-02-09 | 1996-02-09 | Hardening material mixing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3351948B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100553175B1 (en) * | 1999-05-31 | 2006-02-21 | 주식회사 동아환경기술개발 | Method for creating improved ground and apparatus for the same |
| JP2009057748A (en) * | 2007-08-31 | 2009-03-19 | Furoo Techno Kk | Agitator for shallow ground improvement, shallow ground improver, shallow ground improvement system, construction method for improving shallow ground, and construction method for improving contaminated soil |
| KR101378732B1 (en) * | 2012-05-21 | 2014-04-23 | 이송 | Composition of a square shape using high pressure jet grouting techniques Retaining Wall Composition Method |
-
1996
- 1996-02-09 JP JP02420796A patent/JP3351948B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100553175B1 (en) * | 1999-05-31 | 2006-02-21 | 주식회사 동아환경기술개발 | Method for creating improved ground and apparatus for the same |
| JP2009057748A (en) * | 2007-08-31 | 2009-03-19 | Furoo Techno Kk | Agitator for shallow ground improvement, shallow ground improver, shallow ground improvement system, construction method for improving shallow ground, and construction method for improving contaminated soil |
| KR101378732B1 (en) * | 2012-05-21 | 2014-04-23 | 이송 | Composition of a square shape using high pressure jet grouting techniques Retaining Wall Composition Method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3351948B2 (en) | 2002-12-03 |
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