JP2007321524A - Deep mixing device and deep mixing method of soil stabilization - Google Patents

Deep mixing device and deep mixing method of soil stabilization Download PDF

Info

Publication number
JP2007321524A
JP2007321524A JP2006155813A JP2006155813A JP2007321524A JP 2007321524 A JP2007321524 A JP 2007321524A JP 2006155813 A JP2006155813 A JP 2006155813A JP 2006155813 A JP2006155813 A JP 2006155813A JP 2007321524 A JP2007321524 A JP 2007321524A
Authority
JP
Japan
Prior art keywords
discharge casing
sediment discharge
screw feeder
bucket
mixed slurry
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
Application number
JP2006155813A
Other languages
Japanese (ja)
Other versions
JP4200167B2 (en
Inventor
Yuzuru Murasawa
譲 村沢
Masami Fujihira
雅巳 藤平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MIRAI GEO-TECH KK
Mirai Construction Co Ltd
Original Assignee
MIRAI GEO-TECH KK
Mirai Construction Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MIRAI GEO-TECH KK, Mirai Construction Co Ltd filed Critical MIRAI GEO-TECH KK
Priority to JP2006155813A priority Critical patent/JP4200167B2/en
Publication of JP2007321524A publication Critical patent/JP2007321524A/en
Application granted granted Critical
Publication of JP4200167B2 publication Critical patent/JP4200167B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deep mixing device and a deep mixing method of soil stabilization, without generating swelling earth, while forming a uniform consolidated column body of high strength. <P>SOLUTION: This deep mixing device of soil stabilization 1 is composed of a driving motor 4 liftably arranged on a leader 3 of a base machine 2, a sediment discharge casing 5 rotatably arranged in the driving motor 4, an excavation bucket 6 arranged in a lower end part of the sediment discharge casing 5, a fin 7 arranged in the sediment discharge casing 5 positioned in an upper opening 14 of the excavation bucket 6, and a freely rotatable screw feeder 8 arranged over a bottom part 15 of the excavation bucket 6 from the inside of the sediment discharge casing 5. A force feed passage 22 for mixed slurry is formed in a rotary shaft 21 of the screw feeder 8. An injection port 24 of the force feed passage 22 for the mixed slurry, is opened in a tip part of the rotary shaft 21 projecting from the bottom part 15 of the excavation bucket 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本願発明は対象地盤の掘削土砂を一旦地上に排出し、これを地上のリサイクルプラントでセメントスラリーなどの固化材と攪拌混合して混合スラリーを製造し、これを地盤中に再び注入する深層混合処理装置および深層混合処理工法に関するものである。   The present invention is a deep mixing process in which excavated soil on the target ground is once discharged to the ground, and this is stirred and mixed with a solidified material such as cement slurry in a ground recycling plant to produce a mixed slurry, which is then injected again into the ground. The present invention relates to an apparatus and a deep layer processing method.

従来の深層混合処理工法は、先端部に攪拌翼が装着された回転軸の噴射口からセメントなどの固化材を地盤内に注入して攪拌混合することにより固結柱体を造成するものである。この工法は軟弱地盤上に盛土道路、河川堤体、擁壁およびボックスカルバートなどを構築する際の基礎地盤の安定を図るために広く適用されている。また、その他の深層混合処理工法としては、例えば特開２００１−３５５２３０号公報の発明が開示されている。
特開平２００１−３５５２３０号公報 In the conventional deep mixing method, a solidified column is formed by injecting a solidifying material such as cement into the ground from the injection port of a rotating shaft having a stirring blade attached to the tip, and stirring and mixing. . This method is widely applied to stabilize the foundation ground when constructing embankment roads, river embankments, retaining walls, box culverts, etc. on soft ground. In addition, as another deep layer processing method, for example, the invention of Japanese Patent Laid-Open No. 2001-355230 is disclosed.
Japanese Patent Laid-Open No. 2001-355230

しかし、上記の工法は、固化材と地盤中の土砂とを原位置で攪拌混合するため、場所によって微妙に変化する土砂の土性値（含水比、粒度）に固化材配合量が対応できず、固結柱体の強度にバラツキがあるという問題があった。また固化材と地盤中の土砂とを原位置で攪拌混合して高強度の固結柱体を造成するには、対象地盤中の土砂１ｍ３に対してセメントを２００〜３００ｋｇ混合するのが限界であるため高強度のソイルセメント固結柱体の造成が困難であった。また地盤中に固化材を注入すると、その体積分だけ地盤が押し出されて盛り上がり土が発生する。この盛り上がり土は産業廃棄物として扱わざるを得ないという問題があった。さらに水平変位が生じて近接構造物に悪影響を与えることがあった。 However, since the above-mentioned construction method stirs and mixes the solidified material and the earth and sand in the ground, the amount of the solidified material cannot cope with the soil properties (water content ratio, particle size) that slightly changes depending on the location. There was a problem that the strength of the consolidated column body was uneven. In addition, in order to create a high-strength consolidated column by stirring and mixing the solidified material and the soil in the ground in situ, it is the limit to mix 200 to 300 kg of cement with 1 m 3 of soil in the target ground. Therefore, it was difficult to produce a high strength soil cement consolidated column. In addition, when solidifying material is injected into the ground, the ground is pushed out by the volume of the ground and a raised soil is generated. There was a problem that this uplifted soil had to be treated as industrial waste. Further, horizontal displacement may occur and adversely affect adjacent structures.

本願発明は上記のような問題に鑑みてなされたものであり、その目的は、均一かつ高強度の固結柱体が形成できるとともに、盛り上がり土および水平変位が発生しない深層混合処理装置および深層混合処理工法を提供することである。   The present invention has been made in view of the problems as described above, and its purpose is to form a solid and high-strength consolidated column, and to achieve a deep mixing apparatus and a deep mixing that do not generate upsoil and horizontal displacement. It is to provide a processing method.

以上の課題を解決するための深層混合処理装置は、ベースマシンのリーダに昇降自在に設置された駆動モータと、該駆動モータに回転自在に設置された土砂排出用ケーシングと、該土砂排出用ケーシングの下端部に設置された掘削バケットと、該掘削バケットの上部開口部に位置する土砂排出用ケーシングに設置されたフィンと、土砂排出用ケーシング内から掘削バケットの底部にかけて設けられた回転自在なスクリューフィーダとからなり、該スクリューフィーダの回転軸内には混合スラリー用圧送路が形成され、該混合スラリー用圧送路の噴射口が掘削バケットの底部から突出した回転軸の先端部に開口されたことを特徴とする。
また深層混合処理工法は、請求項１の深層混合処理装置を使用するものであり、掘削バケットと、土砂排出用ケーシングと、スクリューフィーダとを正回転させながら地盤に貫入した後、掘削バケットと、土砂排出用ケーシングとを逆回転、スクリューフィーダを正回転させながら引き抜きつつ、回転軸の噴射口から混合スラリーを注入するとともに、掘削バケットの上部における掘削土砂をフィンで掘削バケット内に取り込んでスクリューフィーダによって土砂排出用ケーシングから外部に排出した後、該外部に排出した土砂とセメントスラリーとで製造した混合スラリーをスクリューフィーダの回転軸における噴射口から注入して混合スラリー固結柱体を製造することを特徴とする。 A deep mixing processing apparatus for solving the above-mentioned problems includes a drive motor installed on a reader of a base machine so as to be movable up and down, a sediment discharge casing installed rotatably on the drive motor, and the sediment discharge casing. Excavation bucket installed at the lower end of the excavation bucket, fins installed in the sediment discharge casing located in the upper opening of the excavation bucket, and a rotatable screw provided from the sediment discharge casing to the bottom of the excavation bucket The mixed slurry pressure feed path is formed in the rotary shaft of the screw feeder, and the injection port of the mixed slurry pressure feed path is opened at the tip of the rotary shaft protruding from the bottom of the excavation bucket. It is characterized by.
In addition, the deep mixing treatment method uses the deep mixing treatment device according to claim 1, after the excavation bucket, the sediment discharge casing, and the screw feeder are inserted into the ground while rotating forward, While rotating the earth and sand discharge casing in the reverse direction and pulling out while rotating the screw feeder forward, the mixed slurry is injected from the injection port of the rotating shaft, and the excavated earth and sand at the upper part of the excavation bucket is taken into the excavation bucket with fins and screw feeder After discharging to the outside from the earth and sand discharge casing by means of, the mixed slurry produced with the earth and sand discharged to the outside and cement slurry is injected from the injection port in the rotating shaft of the screw feeder to produce a mixed slurry solid column It is characterized by.

掘削バケットで掘削した対象地盤の土砂をフィンで掘削バケット内に取り込んでスクリューフィーダにより土砂排出用ケーシングから外部に排出することができる。また対象地盤の土砂を一旦地上に排出し、これを地上プラントでセメントスラリーなどの固化材と攪拌混合して混合スラリーを製造し、この混合スラリーを地盤中に再び注入して地盤を改良することにより、土砂の土性値と、これに対応するセメント配合量の設定の精度が飛躍的に向上するため、固結柱体の強度のバラツキがなくなり均一にすることができる。またセメント配合量を対象地盤の土砂１ｍ３に対して２００〜３００ｋｇ以上混合することが可能であることから、高強度の固結柱体を造成することができる。また盛り上がり土および水平変位の発生を防ぐことができる。 The earth and sand of the target ground excavated by the excavation bucket can be taken into the excavation bucket by fins and discharged from the earth and sand discharge casing by the screw feeder. In addition, once the soil of the target ground is discharged to the ground, this is stirred and mixed with a solidified material such as cement slurry at the ground plant to produce a mixed slurry, and this mixed slurry is injected again into the ground to improve the ground. As a result, the soil property value of the earth and sand and the accuracy of setting the cement blending amount corresponding thereto are drastically improved, so that there is no variation in the strength of the consolidated column body and it can be made uniform. Moreover, since it is possible to mix 200-300 kg or more of cement compounding quantities with respect to 1 m 3 of earth and sand of the target ground, a high-strength consolidated column can be created. In addition, it is possible to prevent the occurrence of embankment and horizontal displacement.

以下、本願発明の深層混合処理装置および深層混合処理工法の構築方法の実施の形態を図面に基づいて詳細に説明する。はじめに深層混合処理装置の実施の形態について説明し、次に、この深層混合処理装置を使用した深層混合処理工法の実施の形態について説明するが、各実施の形態において同じ構成は同じ符号を付して説明し、異なった構成は異なった符号を付して説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a deep layer processing apparatus and a method for constructing a deep layer processing method according to the present invention will be described in detail with reference to the drawings. First, an embodiment of a deep mixing processing apparatus will be described, and then an embodiment of a deep mixing processing method using this deep mixing processing apparatus will be described. In each embodiment, the same components are denoted by the same reference numerals. Different configurations will be described with different reference numerals.

図１は、深層混合処理装置１を示したものであり、ベースマシン２のリーダ３に昇降自在に設置された駆動モータ４と、該駆動モータ４に回転自在に設置された土砂排出用ケーシング５と、該土砂排出用ケーシング５の下端部に設置された掘削バケット６と、該掘削バケット６の上部開口に位置する土砂排出用ケーシング５に設置されたフィン７と、土砂排出用ケーシング５内から掘削バケット６の底部にかけて設けられた回転自在なスクリューフィーダ８とから構成されている。   FIG. 1 shows a deep mixing processing apparatus 1, and a drive motor 4 installed on a reader 3 of a base machine 2 so as to be movable up and down, and a sediment discharging casing 5 installed on the drive motor 4 so as to be rotatable. The excavation bucket 6 installed at the lower end of the sediment discharge casing 5, the fins 7 installed in the sediment discharge casing 5 located at the upper opening of the excavation bucket 6, and the sediment discharge casing 5 A rotatable screw feeder 8 provided over the bottom of the excavation bucket 6 is configured.

この駆動モータ４は、リーダ３に支持体９で取り付けられたケーシング用モータ１０と、このケーシング用モータ１０の上面に設置されたスクリューフィーダ用モータ１１とからなり、該スクリューフィーダ用モータ１１の上面に接続した昇降用ワイヤー１２でリーダの頂部１３から吊り下げられ、この昇降用ワイヤー１２の巻き上げ、または巻き戻しによってリーダ３に沿って昇降するようになっている。   The drive motor 4 includes a casing motor 10 attached to the reader 3 with a support 9, and a screw feeder motor 11 installed on the upper surface of the casing motor 10, and the upper surface of the screw feeder motor 11. The lifting wire 12 is suspended from the top portion 13 of the reader, and is lifted and lowered along the reader 3 by winding or unwinding the lifting wire 12.

このケーシング用モータ１０には土砂排出用ケーシング５が回転自在に取り付けられ、この下端部に設けた４枚のフィン７によって土砂排出用ケーシング５に掘削バケット６を接合している。このフィン７は正回転（時計回り）方向側を下側にして傾斜し、内側端が土砂排出用ケーシング５の外周面に接続されるとともに、外側端が掘削バケット６の上部開口１４の内周面に接続されている。   A sediment discharge casing 5 is rotatably attached to the casing motor 10, and the excavation bucket 6 is joined to the sediment discharge casing 5 by four fins 7 provided at the lower end thereof. The fin 7 is inclined with the forward rotation (clockwise) direction side as a lower side, an inner end is connected to the outer peripheral surface of the sediment discharge casing 5, and an outer end is an inner periphery of the upper opening 14 of the excavation bucket 6. Connected to the surface.

この掘削バケット６は、図２〜図４に示すように、上部が開口した円筒形であり、底部１５が尖塔形に形成され、この底部１５には二つの土砂取込口１６が開口され、これが油圧シリンダ１７で移動する蓋体１８により開閉自在となっている。また土砂取込口１６の口縁には内部ビット１９が、底部１５の外周面には外部ビット２０がそれぞれ設置され、これらのビット１９、２０で掘削された土砂が土砂取込口１６から掘削バケット６内に取り込まれるようになっている。   As shown in FIGS. 2 to 4, the excavation bucket 6 has a cylindrical shape with an open top, a bottom 15 having a spire shape, and two earth and sand intakes 16 are opened at the bottom 15. This can be freely opened and closed by a lid 18 that is moved by a hydraulic cylinder 17. Further, an inner bit 19 is installed at the rim of the earth and sand intake port 16, and an outer bit 20 is installed on the outer peripheral surface of the bottom portion 15. The earth and sand excavated by these bits 19 and 20 are excavated from the earth and sand intake port 16. It is adapted to be taken into the bucket 6.

一方、土砂排出用ケーシング５内にはスクリューフィーダ用モータ１１で回転するスクリューフィーダ８が設置され、このスクリューフィーダ８の下端部が土砂排出用ケーシング５の下端部から突出し、その回転軸２１が掘削バケット６の底部中心部に回転自在に設置され、その先端部が底部１５から外部に突出している。このスクリューフィーダ６の回転軸２１内には、混合スラリー用圧送ホース２３が接続された混合スラリー用圧送路２２が形成され、該混合スラリー用圧送路２２の噴射口２４が回転軸２１の先端部に設けられている。   On the other hand, a screw feeder 8 that is rotated by a screw feeder motor 11 is installed in the earth and sand discharge casing 5, the lower end portion of the screw feeder 8 projects from the lower end portion of the earth and sand discharge casing 5, and the rotary shaft 21 is excavated. The bucket 6 is rotatably installed at the center of the bottom of the bucket 6, and its tip projects from the bottom 15 to the outside. In the rotary shaft 21 of the screw feeder 6, a mixed slurry pressure feed path 22 connected to the mixed slurry pressure feed hose 23 is formed, and the injection port 24 of the mixed slurry pressure feed path 22 is the tip of the rotary shaft 21. Is provided.

これらの土砂排出用ケーシング５と掘削バケット６とフィン７とはケーシング用モータ１０によって同じ方向に同時に回転するが、スクリューフィーダ８はスクリューフィーダ用モータ１１によってこれらとは別回転する。このためスクリューフィーダ８は掘削バケット６などが正回転しているときは同様に正回転し、逆回転するときには正回転するようになっている。   These sediment discharge casing 5, excavation bucket 6 and fin 7 are simultaneously rotated in the same direction by a casing motor 10, but the screw feeder 8 is rotated separately from these by a screw feeder motor 11. For this reason, the screw feeder 8 rotates in the same manner when the excavating bucket 6 or the like rotates in the forward direction, and rotates forward in the reverse direction.

したがって、掘削バケット６が正回転すると掘削された土砂は土砂取込口１６からバケット６内に取り込まれるとともに、この取り込まれた土砂がフィン７によって上部開口から掘削バケット６外に排出される。しかし、掘削バケット６が逆回転（反時計回り）すると外部に排出された土砂がフィンによって上部開口から掘削バケット６内に取り込まれ、これがスクリューフィーダ８の正回転によって土砂排出用ケーシング５内に取り込まれて土砂排出口２５から地上に排出される。   Therefore, when the excavation bucket 6 rotates forward, the excavated earth and sand are taken into the bucket 6 from the earth and sand intake port 16, and the taken earth and sand are discharged from the upper opening to the outside of the excavation bucket 6 by the fins 7. However, when the excavation bucket 6 rotates in the reverse direction (counterclockwise), the earth and sand discharged to the outside are taken into the excavation bucket 6 from the upper opening by the fins, and this is taken into the earth and sand discharge casing 5 by the forward rotation of the screw feeder 8. And discharged from the earth and sand outlet 25 to the ground.

次に、上記の深層混合処理装置１を使用した深層混合処理工法について説明する。この工法は対象地盤の土砂を一旦地上に排出し、これと固化材とを地上のリサイクルプラントで混合して混合スラリーを製造し、これを再び地盤中に注入するものであり、図５に示すように、上記の深層混合処理装置１における混合スラリー用圧送ホース２３が地上のリサイクルプラント２６に接合されている。   Next, the deep layer processing method using the above-mentioned deep layer processing apparatus 1 will be described. In this construction method, the earth and sand of the target ground is once discharged to the ground, and this and the solidified material are mixed in a ground recycling plant to produce a mixed slurry, which is injected again into the ground, as shown in FIG. As described above, the mixed slurry pressure feed hose 23 in the above-mentioned deep mixing treatment apparatus 1 is joined to the ground recycling plant 26.

まず、図５に示すように、ケーシング用モータ１０によって掘削バケット６を正回転させて地盤２７を掘削するが、この回転と同時に土砂排出用ケーシング５およびフィン７も回転する。そして、この掘削バケット６のビット１９、２０で掘削された土砂２８が、開口した土砂取込口１６から掘削バケット６内に取り込まれ、これがフィン７によって掘削バケット６外に上部開口１４から排出される。そして、この掘削を地盤２７の所定深さまで行ったところで、掘削バケット６などの正回転を止めると、ほぐれた土砂の柱体２９が形成される。   First, as shown in FIG. 5, the excavation bucket 6 is rotated forward by the casing motor 10 to excavate the ground 27. At the same time, the sediment discharging casing 5 and the fins 7 are also rotated. Then, the earth and sand 28 excavated by the bits 19 and 20 of the excavation bucket 6 is taken into the excavation bucket 6 from the opened earth and sand intake port 16, and is discharged from the upper opening 14 to the outside of the excavation bucket 6 by the fins 7. The Then, when this excavation is performed to a predetermined depth of the ground 27, when the forward rotation of the excavation bucket 6 and the like is stopped, a loose earth and sand column 29 is formed.

次に、図６に示すように、この掘削バケット６の逆回転と同時にスクリューフィーダ８も正回転するため、これらを回転させながら引き抜きを開始するとともに、土砂（上記の掘削土砂２８ではなく別途準備した土砂）とセメントスラリーとを混合した混合スラリー３１をスクリューフィーダ８の回転軸２１における噴射口２４から注入する。この掘削バケット６の逆回転による引き抜きの際には、土砂取込口１６は蓋体１８で閉塞されている。   Next, as shown in FIG. 6, the screw feeder 8 also rotates forward simultaneously with the reverse rotation of the excavating bucket 6, so that the extraction starts while rotating these, and the earth and sand (not the excavated earth and sand 28 described above are prepared separately). The mixed slurry 31 in which the soil and sand) and the cement slurry are mixed is injected from the injection port 24 in the rotary shaft 21 of the screw feeder 8. When the excavation bucket 6 is pulled out by reverse rotation, the earth and sand intake 16 is closed with a lid 18.

そして、この掘削バケット６の逆回転に伴うフィン７の回転によってバケット６内に土砂２８が取り込まれるとともに、これがスクリューフィーダ８によって土砂排出用ケーシング５内に取り込まれて土砂排出口２５から外部に排出される。そして、この土砂排出口２５から排出された掘削土砂２８が落下用シュート３２によって地上に積み上げられる。   The earth and sand 28 are taken into the bucket 6 by the rotation of the fins 7 accompanying the reverse rotation of the excavating bucket 6, and this is taken into the earth and sand discharging casing 5 by the screw feeder 8 and discharged from the earth and sand outlet 25 to the outside. Is done. The excavated earth and sand 28 discharged from the earth and sand outlet 25 is stacked on the ground by the dropping chute 32.

次に、この積み上げられた掘削土砂２８をペイローダ３３でリサイクルプラント２６の近くまで運び、ここからバックホウ３４でリサイクルプラント２６に投入し、セメントスラリーなどの固化材と混合して混合スラリー３１を製造する。   Next, the piled excavated soil 28 is transported to the vicinity of the recycling plant 26 by the pay loader 33, and is then introduced into the recycling plant 26 by the backhoe 34, and mixed with a solidifying material such as cement slurry to produce a mixed slurry 31. .

次に、この混合スラリー３１を混合スラリー用圧送ホース２３で回転軸２１の混合スラリー用圧送路２２に送り、この混合スラリー用圧送路２２の噴射口２４から注入する。そして、この作業を連続して行うことにより、掘削土砂２８を利用した均一な強度の固結柱体３５を造成することができるとともに、盛り上げ土および水平変位の発生を防ぐこともできる。   Next, the mixed slurry 31 is sent to the mixed slurry pressure feed path 22 of the rotating shaft 21 by the mixed slurry pressure feed hose 23 and injected from the injection port 24 of the mixed slurry pressure feed path 22. And by performing this operation | work continuously, while being able to build the solid pillar body 35 of the uniform intensity | strength using the excavated earth and sand 28, generation | occurrence | production of a piled-up soil and horizontal displacement can also be prevented.

このように本願発明の深層混合処理工法は、対象地盤の掘削土砂２８を一旦地上に排出し、これを利用して、地上のリサイクルプラント２６でセメントスラリーなどの固化材と攪拌混合して混合スラリー３１を製造して地盤中に注入するものである。   As described above, the deep mixing treatment method of the present invention discharges the excavated sediment 28 of the target ground to the ground once, and uses this to stir and mix with a solidifying material such as cement slurry in the ground recycling plant 26 to mix slurry. 31 is manufactured and injected into the ground.

深層混合処理装置の一部切欠正面図である。It is a partially cutaway front view of a deep mixing processing apparatus. 掘削バケットの断面図である。It is sectional drawing of a digging bucket. 図２のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 掘削バケットの斜視図である。It is a perspective view of a digging bucket. 深層混合処理工法の断面図である。It is sectional drawing of a deep-layer mixing processing method. 深層混合処理工法の断面図である。It is sectional drawing of a deep-layer mixing processing method.

符号の説明Explanation of symbols

１ 深層混合処理装置
２ ベースマシン
３ リーダ
４ 駆動モータ
５ 土砂排出用ケーシング
６ 掘削バケット
７ フィン
８ スクリューフィーダ
９ 支持体
１０ ケーシング用モータ
１１ スクリューフィーダ用モータ
１２ 昇降用ワイヤー
１３ リーダの頂部
１４ 上部開口
１５ 底部
１６ 土砂取込口
１７ 油圧シリンダ
１８ 蓋体
１９ 内部ビット
２０ 外部ビット
２１ 回転軸
２２ 混合スラリー用圧送路
２３ 混合スラリー用圧送ホース
２４ 噴射口
２５ 土砂排出口
２６ リサイクルプラント
２７ 地盤
２８ 土砂
２９ 柱体
３０ 空隙部
３１ 混合スラリー
３２ 落下用シュート
３３ ペイローダ
３４ バックホウ
３５ 固結柱体 DESCRIPTION OF SYMBOLS 1 Deep layer processing apparatus 2 Base machine 3 Leader 4 Drive motor 5 Sediment discharge casing 6 Excavation bucket 7 Fin 8 Screw feeder 9 Support body 10 Casing motor 11 Screw feeder motor 12 Lifting wire 13 Leader top 14 Upper opening 15 Bottom portion 16 Sediment intake port 17 Hydraulic cylinder 18 Lid 19 Internal bit 20 External bit 21 Rotary shaft 22 Mixed slurry pressure feed path 23 Mixed slurry pressure feed hose 24 Injection port 25 Sediment discharge port 26 Recycling plant 27 Ground 28 Sediment 29 Column 30 Cavity 31 Mixed Slurry 32 Drop Chute 33 Payloader 34 Backhoe 35 Consolidation Column

Claims (2)

ベースマシンのリーダに昇降自在に設置された駆動モータと、該駆動モータに回転自在に設置された土砂排出用ケーシングと、該土砂排出用ケーシングの下端部に設置された掘削バケットと、該掘削バケットの上部開口部に位置する土砂排出用ケーシングに設置されたフィンと、土砂排出用ケーシング内から掘削バケットの底部にかけて設けられた回転自在なスクリューフィーダとからなり、該スクリューフィーダの回転軸内には混合スラリー用圧送路が形成され、該混合スラリー用圧送路の噴射口が掘削バケットの底部から突出した回転軸の先端部に開口されたことを特徴とする深層混合処理装置。   A drive motor installed on the leader of the base machine so as to be movable up and down, a sediment discharge casing installed on the drive motor for rotation, a drilling bucket installed at a lower end of the sediment discharge casing, and the drill bucket A fin installed in the sediment discharge casing located in the upper opening of the earth and a rotatable screw feeder provided from the sediment discharge casing to the bottom of the excavation bucket, and in the rotation axis of the screw feeder A deep layer mixing processing apparatus, characterized in that a mixed slurry pressure feed path is formed, and an injection port of the mixed slurry pressure feed path is opened at a tip end of a rotating shaft protruding from a bottom portion of the excavation bucket. 請求項１の深層混合処理装置を使用するものであり、掘削バケットと、土砂排出用ケーシングと、スクリューフィーダとを正回転させながら地盤に貫入した後、掘削バケットと、土砂排出用ケーシングとを逆回転、スクリューフィーダを正回転させながら引き抜きつつ、回転軸の噴射口から混合スラリーを注入するとともに、掘削バケットの上部における掘削土砂をフィンで掘削バケット内に取り込んでスクリューフィーダによって土砂排出用ケーシングから外部に排出した後、該外部に排出した土砂とセメントスラリーとで製造した混合スラリーをスクリューフィーダの回転軸における噴射口から注入して混合スラリー固結柱体を製造することを特徴とする深層混合処理工法。   The deep mixing treatment apparatus according to claim 1 is used, and after the excavation bucket, the sediment discharge casing, and the screw feeder are rotated forward, the excavation bucket and the sediment discharge casing are reversed. While rotating, pulling out while rotating the screw feeder forward, the mixed slurry is injected from the injection port of the rotating shaft, and the excavated earth and sand at the upper part of the excavating bucket is taken into the excavating bucket with fins and externally removed from the sediment discharge casing by the screw feeder The mixed slurry produced by the earth and sand discharged to the outside and the cement slurry is injected from the injection port in the rotating shaft of the screw feeder to produce a mixed slurry consolidated column body. Construction method.
JP2006155813A 2006-06-05 2006-06-05 Deep mixing method Expired - Fee Related JP4200167B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006155813A JP4200167B2 (en) 2006-06-05 2006-06-05 Deep mixing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006155813A JP4200167B2 (en) 2006-06-05 2006-06-05 Deep mixing method

Publications (2)

Publication Number Publication Date
JP2007321524A true JP2007321524A (en) 2007-12-13
JP4200167B2 JP4200167B2 (en) 2008-12-24

Family

ID=38854581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006155813A Expired - Fee Related JP4200167B2 (en) 2006-06-05 2006-06-05 Deep mixing method

Country Status (1)

Country Link
JP (1) JP4200167B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106759597A (en) * 2017-01-18 2017-05-31 王燏斌 One kind is rotated excavates device for casting and its construction method
CN107268598A (en) * 2017-06-28 2017-10-20 中交上海航道局有限公司 A kind of environmental control system for deep-layer stirring ship
JP2022112682A (en) * 2021-01-22 2022-08-03 株式会社不動テトラ Ground improvement device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105645849B (en) * 2016-01-08 2017-12-01 南京工业大学 EPS (expandable polystyrene) improved soil for treating expansive soil slope and construction method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106759597A (en) * 2017-01-18 2017-05-31 王燏斌 One kind is rotated excavates device for casting and its construction method
CN107268598A (en) * 2017-06-28 2017-10-20 中交上海航道局有限公司 A kind of environmental control system for deep-layer stirring ship
JP2022112682A (en) * 2021-01-22 2022-08-03 株式会社不動テトラ Ground improvement device
JP7315596B2 (en) 2021-01-22 2023-07-26 株式会社不動テトラ soil improvement equipment

Also Published As

Publication number Publication date
JP4200167B2 (en) 2008-12-24

Similar Documents

Publication Publication Date Title
JPH10204876A (en) Soil improvement method by using pile
JP6216477B1 (en) Ground improvement method and cylindrical improvement body
JP4200167B2 (en) Deep mixing method
KR101187582B1 (en) Auger device equiped with excavating rod and casing rod having same turning direction and different speed
JP2000073354A (en) Preparating method of ground improving body and preparating method of continuous walls
JP2012057407A (en) Slurry recycling method
JP4566805B2 (en) Ground improvement device and ground improvement method
JP4923011B2 (en) Construction method of columnar ground improvement body
JP6037982B2 (en) Waste treatment method at waste disposal site
JP4796197B2 (en) Ground improvement body construction apparatus and ground improvement body construction method
JP3158053U (en) Ground improvement body construction equipment
JP2005009240A (en) Method for installing soil hardened matter on-site-manufactured pile and prefabricated pile
JP2018145700A (en) Construction device and construction method of pile foundation
JP4887460B1 (en) Ground compaction device
JP2017057705A (en) Construction method of continuous soil cement underground wall
JP5202743B2 (en) Columnar ground improvement body construction device
JP7430103B2 (en) Ground improvement method for pile extraction holes
KR100521888B1 (en) Method for constructing soil cement a stake
JP2009150157A (en) Construction device and method for soil cement column
JP3974937B2 (en) Ground improvement method
JP2014047482A (en) Ground improvement device, surplus soil discharge inhibitor of ground improvement device, and ground improvement method
JP5132701B2 (en) Construction method of columnar ground improvement body
JP2014205095A (en) Waste disposal method in waste disposal site and excavation body
JP2014163218A (en) Shield machine and shield method
JP3140770U (en) Auger shaft

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080418

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080423

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080529

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080909

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20081006

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111010

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4200167

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111010

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111010

Year of fee payment: 3

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111010

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313115

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111010

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111010

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121010

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121010

Year of fee payment: 4

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121010

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131010

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees