JPH0396514A - Soil cement cut-off wall construction method and device thereof - Google Patents
Soil cement cut-off wall construction method and device thereofInfo
- Publication number
- JPH0396514A JPH0396514A JP23288489A JP23288489A JPH0396514A JP H0396514 A JPH0396514 A JP H0396514A JP 23288489 A JP23288489 A JP 23288489A JP 23288489 A JP23288489 A JP 23288489A JP H0396514 A JPH0396514 A JP H0396514A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- drilling
- cement
- stirring
- 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.)
- Granted
Links
- 239000004568 cement Substances 0.000 title claims abstract description 37
- 239000002689 soil Substances 0.000 title claims description 13
- 238000010276 construction Methods 0.000 title description 7
- 238000003756 stirring Methods 0.000 claims abstract description 30
- 210000000078 claw Anatomy 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 60
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 abstract 6
- 239000011162 core material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000008267 milk Substances 0.000 description 4
- 210000004080 milk Anatomy 0.000 description 4
- 235000013336 milk Nutrition 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011400 blast furnace cement Substances 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はソイルセメント止水壁の構築方法及びその構築
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for constructing a soil cement water-stop wall and an apparatus for constructing the same.
〈従来の技術〉
ソイルセメント止水壁は、地盤に削孔した溝内に、泥土
とボルトランドセメントあるいは高炉セメント等を混合
、硬化させて、止水性を有する壁体を構築するものであ
る。<Prior Art> Soil cement water-stopping walls are constructed by mixing mud and boltland cement, blast furnace cement, or the like into a trench drilled in the ground and hardening the mixture to form a water-stopping wall.
従来、この止氷壁の構築には、所謂シャトルエ法と呼ば
れる工法が利用されている。Conventionally, a construction method called the so-called shuttlee method has been used to construct this ice wall.
シャトルエ法は、先ず、削孔専用の装置によって、地盤
に等しい間隔をおいて柱列杭を先行削孔する。In the shuttlee method, first, a column pile is pre-drilled at equal intervals in the ground using a special drilling device.
次に、垂直のオーガスタリューを三体並列させた撹拌削
孔装置によって、上記柱列杭間の未削孔の地盤を、中央
のオーガスクリューで後行削孔すると同時に、両側の柱
列杭内の泥土を、セメントを注入しながら撹拌する。Next, using an agitation drilling device with three vertical august screws arranged in parallel, the undrilled ground between the pillar row piles is drilled backward by the central auger screw. of mud is stirred while pouring cement.
そして、泥土とセメントを混合、硬化させて、ソイルセ
メント止水壁を構築するものである。Then, mud and cement are mixed and hardened to construct a soil-cement waterstop wall.
〈本発明が解決しようとする問題点〉
従来の上記のようなソイルセメント止水壁の構築技術に
は、次のような問題点が存在する。<Problems to be Solved by the Present Invention> The following problems exist in the conventional soil cement water stop wall construction technology as described above.
〈イ〉柱列杭間の未削孔地盤を後行削孔する場合、撹拌
削孔装置の中央のオーガスクリューによって、削孔を行
うことになる。<B> When drilling holes in the undrilled ground between the columns of piles, the holes will be drilled using the auger screw in the center of the stirring drilling device.
しかし、オーガスクリューでは、地山内の転石や玉石層
を破砕することが困難である。However, with an auger screw, it is difficult to crush boulders and cobblestone layers within the ground.
そのため、柱列杭内にHjll等の杭芯材を建て込む際
には、比重の大きいセメントを杭底部に沈殿させ、転石
等を浮遊させた状態で、杭芯材によって浮遊する転石等
をかき分けて建て込んでいた。Therefore, when installing pile core material such as Hjll in column piles, cement with a high specific gravity is precipitated at the bottom of the pile, and with the boulders, etc. floating, the pile core material is used to push aside the floating boulders, etc. there was.
従って,作業が煩雑になるのを避けられない。Therefore, it is unavoidable that the work becomes complicated.
また、柱列杭の削孔に時間がかかると、浮遊していた転
石等が杭底に沈下してしまう。Additionally, if it takes a long time to drill holes in column piles, floating stones and the like will sink to the bottom of the piles.
そのため、杭芯材を建て込んだ場合に、杭芯材の下端が
転石等の上に載置され、杭底に到達せず、杭底の削孔の
やり直しの原因となる。Therefore, when the pile core material is erected, the lower end of the pile core material is placed on boulders, etc., and does not reach the pile bottom, causing re-drilling of the pile bottom.
〈口〉オーガスクリューを三体並列させた撹拌削孔装置
の他に、先行削孔専用の削孔装置が必要となり、不経済
である。<Mouth> In addition to an agitation drilling device with three auger screws arranged in parallel, a drilling device exclusively for preliminary drilling is required, which is uneconomical.
〈本発明の目的〉
本発明は上記のような問題点を解決するためになされた
もので、先行、後行両削孔時に、地盤内の転石や玉石層
を破砕することができ、しかも一つの削孔装置を、先行
、後行削孔に共用することができるソイルセメント止水
壁構築法及びその装置を提供することを目的とする。<Objective of the present invention> The present invention was made to solve the above-mentioned problems, and is capable of crushing boulders and cobblestone layers in the ground during both preceding and subsequent drilling. An object of the present invention is to provide a method for constructing a soil cement water stop wall and an apparatus therefor, in which one drilling device can be used in common for both preceding and subsequent drilling.
〈問題点を解決するための手段〉
即ち本発明は、先端に削孔爪を有する回転可能な外管内
に、スクリューを内挿した削孔装置によって、地盤に等
しい間隔をおいて柱列杭を削孔し、この柱列杭内には泥
水を充填しておき、中央に前記削孔装置を装着し、その
両側に撹拌装置及びセメントの注入装置を有する三連式
の削孔撹拌装置によって、前記柱列杭間の未削孔の地盤
を削孔装置によって削孔すると同時に、削孔装置の両側
の柱列杭内の泥土を、セメントを注入しながら、撹拌装
置によって撹拌し、泥土とセメントを混合、硬化させて
、壁体を構築することを特徴とするソイルセメント止水
壁の構築方法である。<Means for Solving the Problems> That is, the present invention uses a drilling device in which a screw is inserted into a rotatable outer tube having a drilling claw at the tip to drill column piles at equal intervals in the ground. Holes are drilled and muddy water is filled in the columnar piles, and a triple drilling and stirring device is used, which has the hole drilling device installed in the center and a stirring device and a cement injection device on both sides. At the same time, the undrilled ground between the column piles is drilled by a drilling device, and at the same time, the mud in the column piles on both sides of the hole drilling device is stirred by a stirring device while cement is injected, and the mud and cement are mixed. This is a method for constructing a soil-cement water-stop wall, which is characterized by mixing and curing the soil cement water-stop walls and constructing the wall body.
また本発明は、上記ソイルセメント止水壁の構築方法に
おいて用いる装置であって、先端に削孔爪を有する回転
可能な外管内に、スクリューを内挿した削孔装置と、こ
の削孔装置を装着する部分と、その両側の撹拌部と、こ
の撹拌部に設けたセメント注入部よりなる撹拌装置とに
よって構成したことを特徴とするソイルセメント止水壁
の構築装置である。The present invention also provides a device for use in the method for constructing a soil cement water stop wall, which includes a screw inserted into a rotatable outer tube having a hole-drilling claw at the tip; This is a soil cement water stop wall construction device characterized by comprising a mounting part, a stirring part on both sides thereof, and a stirring device consisting of a cement injection part provided in the stirring part.
〈本発明の説明〉 以下、本発明を詳細に説明をする。<Description of the present invention> The present invention will be explained in detail below.
〈イ〉削孔装置の構造(第1、2図)
削孔装置lは、外管2と、この外管2内に内挿した内ス
クリュー3よりなる。<A> Structure of the hole drilling device (FIGS. 1 and 2) The hole drilling device 1 consists of an outer tube 2 and an inner screw 3 inserted into the outer tube 2.
外管2は、先端に転石や玉石等を破砕可能な削孔爪21
を有する。The outer tube 2 has a drilling claw 21 at its tip that can crush boulders, cobblestones, etc.
has.
内スクリュー3は、公知のオーガスクリュー等を用い、
外管2内に挿入可能なスクリュー径を有する。The inner screw 3 uses a known auger screw or the like,
It has a screw diameter that can be inserted into the outer tube 2.
また、内スクリュー3の回転軸には、セメントミルクの
注入路31が設けられており、その注入路31は内スク
リュー3の下端に開口し、注入口32とする。Further, the rotation shaft of the inner screw 3 is provided with an injection path 31 for cement milk, and the injection path 31 opens at the lower end of the inner screw 3 and serves as an injection port 32 .
そして、外管2及び内スクリュー3の上部には駆動装置
(図示せず)を取り付け、外管2と内スクリュー3を、
互いに逆方向に回転させて削孔するよう構成する。A driving device (not shown) is attached to the upper part of the outer tube 2 and the inner screw 3, and the outer tube 2 and the inner screw 3 are connected to each other.
The configuration is such that the holes are drilled by rotating in opposite directions.
〈口〉撹拌装置の構造(第1、3図)
撹拌装置は4は、管体を垂直に立ち上げたケーシング4
1を装置中央に配置し、その両側に連結板42を介して
油圧モータ43を取り付ける。<Port> Structure of the stirring device (Figs. 1 and 3) The stirring device 4 is a casing 4 with a vertical tube.
1 is placed in the center of the device, and hydraulic motors 43 are attached to both sides of the motor via connecting plates 42.
ケーシング41の内径は、削孔装置1の外管2の外径よ
り僅かに大きく形威し、ケーシング41内に削孔装置1
を装着可能に構成する。The inner diameter of the casing 41 is slightly larger than the outer diameter of the outer tube 2 of the drilling device 1, and the drilling device 1 is installed inside the casing 41.
be configured so that it can be installed.
また、ケーシング4lは、削孔時のガイド管ともなるた
め、剛性部材によって形成する。The casing 4l also serves as a guide tube during drilling, and is therefore formed of a rigid member.
両側の油圧モータ43には、撹拌羽根44を複数取り付
けた回転軸45を、ケーシング41と並行に回転可能に
連結する。A rotary shaft 45 to which a plurality of stirring blades 44 are attached is rotatably connected to the hydraulic motors 43 on both sides in parallel with the casing 41 .
また、回転軸45は中空孔を有しており、この中空孔の
上端部は、スイベル46を介して、セメントミルクを注
入するための注入管47と連通し、中空孔の下端部は、
回転軸45の下端部に開口して、注入口48とする。Further, the rotating shaft 45 has a hollow hole, the upper end of the hollow hole communicates with an injection pipe 47 for injecting cement milk via a swivel 46, and the lower end of the hollow hole communicates with an injection pipe 47 for injecting cement milk.
An injection port 48 is opened at the lower end of the rotating shaft 45 .
〈ハ〉柱列杭の先行削孔(第4図)
次に、上記のように構成した装置を用いて、ソイルセメ
ント止水壁の施工方法について説明する。<C> Preliminary drilling of column piles (Fig. 4) Next, a method for constructing a soil cement water cutoff wall using the apparatus configured as described above will be described.
先ず、撹拌装置4と分離した削孔装置1によって、地盤
に等しい間隔をおいて柱列杭5を先行削孔し、排土する
。First, the column piles 5 are pre-drilled at equal intervals in the ground using the drilling device 1, which is separate from the stirring device 4, and the soil is removed.
このとき、柱列杭5内には泥水6を充填しておき、杭壁
の崩壊を防止する。At this time, the column piles 5 are filled with muddy water 6 to prevent the pile walls from collapsing.
〈二〉柱列杭の後行削孔(第5、6図)次に、削孔装置
1を、撹拌装置4のケーシング41内に装着し、三連式
の削孔撹拌装置を組み立てる。<2> Backward drilling of columnar piles (Figures 5 and 6) Next, the drilling device 1 is installed in the casing 41 of the stirring device 4, and a triple-type drilling and stirring device is assembled.
装置中央に装着した削孔装置1によって、柱列杭5間の
未削孔の地盤の削孔を開始する。Drilling of undrilled holes in the ground between the rows of piles 5 is started using the drilling device 1 mounted at the center of the device.
このとき、撹拌装置4の回転軸45は、削孔装置1の両
側の柱列杭5内に挿入しておく。At this time, the rotating shaft 45 of the stirring device 4 is inserted into the column piles 5 on both sides of the drilling device 1.
削孔と同時に、削孔装置1の両側の柱列杭5内に、注入
口32及び48よりセメントミルクを注入しながら、柱
列杭5内の泥土を撹拌羽根44によって撹拌する。Simultaneously with drilling, cement milk is injected into the column piles 5 on both sides of the drilling device 1 from the injection ports 32 and 48, and the mud in the column piles 5 is stirred by the stirring blades 44.
柱列杭5内の泥土とセメントを十分に撹拌、混合し、フ
ィルセメント7を練り上げる。The mud and cement in the column piles 5 are thoroughly stirred and mixed, and fill cement 7 is kneaded.
そして、フィルセメント7を養生、硬化させて、ソイル
セメント止水壁8の構築を完了する。Then, the fill cement 7 is cured and hardened to complete the construction of the soil cement water stop wall 8.
〈本発明の効果〉 本発明によれば、次のような効果を得ることができる。<Effects of the present invention> According to the present invention, the following effects can be obtained.
〈イ〉従来はオーガスタリューによって、後行削孔を行
うため、地山内の転石や玉石層を破砕することが困難で
あり、杭芯材を建て込む作業が煩雑になるのを避けられ
ない。<B> Conventionally, trailing drilling is performed using an Augustalyu, which makes it difficult to crush the boulders and cobblestone layers in the ground, making it unavoidable that the work of erecting the pile core material becomes complicated.
また、杭芯材を正確に建て込むことができず、杭底の削
孔のやり直しの原因となる。In addition, the pile core material cannot be installed accurately, resulting in re-drilling of the bottom of the pile.
それに対して本発明は、先行、後行の両削孔とらに、ド
ーナツオーガ等の外管と内スクリューよりなる削孔装置
を用いるものである。On the other hand, the present invention uses a drilling device consisting of an outer tube such as a donut auger and an inner screw for both the leading and trailing holes.
そのため、後行削孔時においても、地山内の転石や玉石
層を破砕することができる。Therefore, even during backward drilling, it is possible to crush boulders and cobblestone layers in the ground.
従って、杭芯材は杭内にそのまま建て込むだけでよく、
建て込み作業を容易かつ正確に行うことができる。Therefore, the pile core material only needs to be inserted directly into the pile.
Construction work can be performed easily and accurately.
また、杭底の削孔のやり直しをしなくて済む。Also, there is no need to re-drill holes at the bottom of the pile.
〈口〉従来は、オーガスタリューを三体並列させた撹拌
削孔装置の他に、先行削孔専用の削孔装置が必要となり
、不経済である。<Exposure> Conventionally, in addition to a stirring drilling device in which three Augusta Lius are arranged in parallel, a drilling device exclusively for advance drilling is required, which is uneconomical.
それに対して本発明は、独立した削孔装置を、撹拌装置
に合体することができる。In contrast, the present invention allows an independent drilling device to be integrated into the stirring device.
そのため、一つの削孔装置を先行、後行削孔に共用する
ことができ、経済的である。Therefore, one drilling device can be used for both preceding and subsequent drilling, which is economical.
〈ハ〉削孔装置を装着するためのケーシングは、剛性を
有するため、削孔装置の削孔ずれを防止でき、杭の削孔
精度が向上する。<C> Since the casing for mounting the hole-drilling device has rigidity, it is possible to prevent the hole-drilling device from slipping, and the accuracy of drilling the pile is improved.
〈二〉転石等のない普通地盤においても、杭の削孔精度
が向上するため、止水性が良くなる。<2> Even on ordinary ground without boulders, etc., the accuracy of drilling holes in piles is improved, so water-stopping properties are improved.
第1図二本発明の装置の説明図
第2図:削孔装置の説明図
第3図:撹拌装置の説明図
第4図:先行削孔の施工方法を示す説明図第5図:後行
削孔の施工方法を示す説明図第6図:止氷壁の完成状態
の説明図
第I
図
第2図
第4
図
第
5図Fig. 1 2 An explanatory diagram of the device of the present invention Fig. 2: An explanatory diagram of the drilling device Fig. 3: An explanatory diagram of the stirring device Fig. 4: An explanatory diagram showing the construction method for preliminary drilling Fig. 5: Subsequent drilling Explanatory diagram showing the drilling method. Figure 6: Explanatory diagram of the completed ice wall. Figure I. Figure 2. Figure 4. Figure 5.
Claims (2)
リューを内挿した削孔装置によって、 地盤に等しい間隔をおいて柱列杭を削孔し、この柱列杭
内には泥水を充填しておき、 中央に前記削孔装置を装着し、その両側に撹拌装置及び
セメントの注入装置を有する三連式の削孔撹拌装置によ
って、 前記柱列杭間の未削孔の地盤を削孔装置によって削孔す
ると同時に、 削孔装置の両側の柱列杭内の泥土を、セメントを注入し
ながら、撹拌装置によって撹拌し、泥土とセメントを混
合、硬化させて、壁体を構築することを特徴とした、 ソイルセメント止水壁の構築方法。(1) Holes are drilled into column piles at equal intervals in the ground using a drilling device in which a screw is inserted into a rotatable outer tube with a drilling claw at the tip. The undrilled ground between the rows of piles is filled with a triple drilling and stirring device, which is equipped with the hole-drilling device in the center and has a stirring device and a cement injection device on both sides. At the same time as the hole is drilled by the hole drilling device, the mud in the column piles on both sides of the hole drilling device is stirred by the stirring device while cement is injected, and the mud and cement are mixed and hardened to construct the wall. A method for constructing a soil-cement water-stop wall, which is characterized by:
壁の構築方法において用いる装置であって、先端に削孔
爪を有する回転可能な外管内に、スクリューを内挿した
削孔装置と、 この削孔装置を装着する部分と、その両側の撹拌部と、
この撹拌部に設けたセメント注入部よりなる撹拌装置と
によって構成した、 ソイルセメント止水壁の構築装置。(2) A device used in the method for constructing a soil cement water-stop wall according to claim 1, which includes a screw inserted into a rotatable outer tube having a hole-drilling claw at the tip; , the part where this hole-drilling device is attached, and the stirring parts on both sides of it,
A device for constructing a soil cement water stop wall, which is composed of a stirring device consisting of a cement injection section installed in this stirring section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23288489A JP2686445B2 (en) | 1989-09-11 | 1989-09-11 | Soil cement water blocking wall construction method and its equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23288489A JP2686445B2 (en) | 1989-09-11 | 1989-09-11 | Soil cement water blocking wall construction method and its equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0396514A true JPH0396514A (en) | 1991-04-22 |
JP2686445B2 JP2686445B2 (en) | 1997-12-08 |
Family
ID=16946353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23288489A Expired - Lifetime JP2686445B2 (en) | 1989-09-11 | 1989-09-11 | Soil cement water blocking wall construction method and its equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2686445B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH083980A (en) * | 1994-06-22 | 1996-01-09 | Marutoku Kigyo:Kk | Method for constructing underground wall |
JPH08246441A (en) * | 1995-03-08 | 1996-09-24 | Ask Kenkyusho:Kk | Forming method of underground continuous wall |
JPH0978571A (en) * | 1995-09-13 | 1997-03-25 | Marutoku Kigyo:Kk | Execution method for soil cement pile |
KR100476894B1 (en) * | 2002-06-07 | 2005-03-17 | 주식회사 동아지질 | The method of simultaneous mixing construction using a steel pipe and its device |
JP2008111240A (en) * | 2006-10-30 | 2008-05-15 | Marutoku Kigyo:Kk | Method of constructing underground wall |
CN110453736A (en) * | 2019-08-13 | 2019-11-15 | 浙江大学台州研究院 | Catenary mast excavation of foundation pit equipment |
-
1989
- 1989-09-11 JP JP23288489A patent/JP2686445B2/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH083980A (en) * | 1994-06-22 | 1996-01-09 | Marutoku Kigyo:Kk | Method for constructing underground wall |
JPH08246441A (en) * | 1995-03-08 | 1996-09-24 | Ask Kenkyusho:Kk | Forming method of underground continuous wall |
JPH0978571A (en) * | 1995-09-13 | 1997-03-25 | Marutoku Kigyo:Kk | Execution method for soil cement pile |
KR100476894B1 (en) * | 2002-06-07 | 2005-03-17 | 주식회사 동아지질 | The method of simultaneous mixing construction using a steel pipe and its device |
JP2008111240A (en) * | 2006-10-30 | 2008-05-15 | Marutoku Kigyo:Kk | Method of constructing underground wall |
JP4550792B2 (en) * | 2006-10-30 | 2010-09-22 | 株式会社丸徳基業 | Construction method of underground wall |
CN110453736A (en) * | 2019-08-13 | 2019-11-15 | 浙江大学台州研究院 | Catenary mast excavation of foundation pit equipment |
CN110453736B (en) * | 2019-08-13 | 2024-04-12 | 浙江大学台州研究院 | Contact net pillar foundation pit excavation equipment |
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JP2686445B2 (en) | 1997-12-08 |
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