JPH0468109A - Injection method with horizontal sleeve - Google Patents
Injection method with horizontal sleeveInfo
- Publication number
- JPH0468109A JPH0468109A JP17985490A JP17985490A JPH0468109A JP H0468109 A JPH0468109 A JP H0468109A JP 17985490 A JP17985490 A JP 17985490A JP 17985490 A JP17985490 A JP 17985490A JP H0468109 A JPH0468109 A JP H0468109A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- tip
- pipe
- outer tube
- injection port
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000005553 drilling Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 2
- 239000002689 soil Substances 0.000 claims 1
- 239000011440 grout Substances 0.000 abstract description 22
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は水平方向からの薬液注入により地盤改良を行な
う水平スリーブ注入工法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a horizontal sleeve injection method for improving ground by horizontally injecting a chemical solution.
従来技術とその問題点
本出願人は先に２重管とダブルバッカーとを用いて水平
方向から薬液注入し地盤改良を行なう、所謂水平スリー
ブ注入工法を提案した（例えば特開平１−１３１７１５
号公報参照）。この水平スリーブ注入工法は、例えば都
市部に於ては、立坑内からの水平注入で建造物直下の地
盤を改良でき、また新幹線などのトンネル工事に於ては
トンネル内よりの水平注入でその周辺の地盤を改良でき
、スリーブ注入工法の適用範囲を拡大できるという点で
注目されている。ところが削孔は水平方向に行なわれる
ので、例えばケーシングを引抜いてから削孔内にシール
グラウトを注入充填しようとすると、削孔の一部が崩壊
してシールグラウトの注入充填を妨げる危険性があり、
またケーシング内に２重管のうちのスリーブ外管を挿入
して、之等の間にシールグラウトに注入充填してからケ
ーシングを引抜くと、ケーシング引抜きにより生成する
空隙によりシールグラウト層が部分的に崩壊する危険性
があり、シールグラウト層の形成に一抹の不安かあった
。Prior Art and its Problems The present applicant previously proposed the so-called horizontal sleeve injection method, which uses a double pipe and a double backer to inject chemical liquid from the horizontal direction to improve the ground (for example, Japanese Patent Application Laid-Open No. 1-131715).
(see publication). This horizontal sleeve injection method can be used, for example, in urban areas to improve the ground directly beneath a building by horizontally injecting from within a shaft, and in tunnel construction such as for the Shinkansen, by horizontally injecting from within the tunnel to improve the surrounding area. It is attracting attention because it can improve the ground and expand the scope of application of the sleeve injection method. However, since drilling is done horizontally, for example, if you try to inject seal grout into the hole after pulling out the casing, there is a risk that part of the hole will collapse and prevent seal grout from being poured. ,
In addition, if the sleeve outer tube of the double tube is inserted into the casing and the seal grout is injected and filled between the two and then the casing is pulled out, the seal grout layer may be partially covered by the voids created by pulling out the casing. There was a risk of collapse, and there was some concern about the formation of the seal grout layer.
本発明はこのような従来の問題点を一掃することを目的
としてなされたものである。The present invention has been made with the aim of eliminating such conventional problems.
問題点を解決するための手段
本発明は、ケーシングを改良目的地盤内に、該地盤の垂
直壁面を覆う土留壁等に取付けられたガイド管及び土留
壁等を通じ、ケーシングの外側を上記ガイド管の口元シ
ール部によりシールした状態で、水平に所定深度まで貫
入し、この貫入はケーシング先端に装着した筒状先端ピ
ッ）・の削孔案内と、先端ビットの先端に開口する噴口
より噴出される削孔水の削孔案内とにより行ない、また
貫入作業時に発生する泥水は、ケーシング内への逆流を
先端ビットの内腔部内に押抜き可能に挿着した栓部材及
び」二記噴ロ内に備えた逆止弁により防止することによ
り、ケーシングの外側を逆流させて、上記ガイド管に備
付けの給、排口より適宜外部に排出し、次に」二記ケー
シング内に２重管のうちの先端コーン付スリーブ外管を
挿入して、先端ビット内の栓体を押抜くと共に、外管の
先端コーンに設けた注入口を、中空押えロッドを介して
シールグラントの供給部に接続し、次いで上記押えロッ
ドからこれに接続する注入口を通じ、ケーシング貫入に
より形成された削孔内に、外管とケーシング間の隙間を
、該ケーシングの先端部の内周面に装着したシール部材
によりシールしつつ注入充填し、この注入充填につれケ
ーシングを引抜き、次いで外管内に、ダブルパッカー付
内管を挿入し、常法通り薬液注入を行なうことを特徴と
する水平スリーブ注入工法に係る。Means for Solving the Problems The present invention provides a method for inserting a casing into improved ground through a guide pipe and an earth retaining wall, etc., which are attached to an earth retaining wall covering a vertical wall surface of the ground, and connecting the outside of the casing to the guide pipe. With the mouth sealed, it penetrates horizontally to a predetermined depth. The muddy water generated during the penetrating work is caused to flow back into the casing by means of a plug member inserted removably into the bore of the tip bit and a jet blower. By preventing this with a check valve, the outside of the casing is allowed to flow backwards and discharged to the outside from the supply and outlet ports provided in the guide pipe, and then the tip of the double pipe is placed inside the casing. Insert the sleeve outer tube with cone and push out the stopper in the tip bit, connect the injection port provided in the tip cone of the outer tube to the supply part of the seal gland via the hollow holding rod, and then Inject from the holding rod through the injection port connected to this into the drilled hole formed by penetrating the casing, while sealing the gap between the outer tube and the casing with a sealing member attached to the inner peripheral surface of the tip of the casing. This relates to a horizontal sleeve injection method characterized in that the casing is pulled out as the casing is filled, an inner tube with a double packer is inserted into the outer tube, and chemical solution is injected in the usual manner.
実施例
以下に本発明工法の一実施状況を添附図面にもとづき説
明すると次の通りである。EXAMPLE Below, one implementation status of the construction method of the present invention will be explained based on the attached drawings.
本発明工法の実施に際しては、ガイド管（１）、ケーシ
ング（２）、スリーブ注入装置としての２重管（３ａ）
、（３ｂ）及び中空押えロッド（４）などが用いられる
。When carrying out the method of the present invention, a guide pipe (1), a casing (2), a double pipe (3a) as a sleeve injection device, etc.
, (3b) and a hollow presser rod (4).
ガイド管（１）（第１図参照）はケーシング（２）の地
盤内への挿入を案内するものであり、口元部に口元シー
ル部（１ａ）を、また側部に開閉コック（ｌｂｆ）付の
給、排口（１ｂ）を、それぞれ備えている。The guide tube (1) (see Figure 1) guides the insertion of the casing (2) into the ground, and has a mouth seal part (1a) at the mouth and an opening/closing cock (lbf) on the side. It is provided with a supply and a discharge port (1b) respectively.
ケーシング（２）（第２図参照）は地盤を水平方向に削
孔するためのものであり、筒状の先端ビット（５）を具
備し、該ビット（５）内には、適宜先方へ押抜き可能な
栓部材（６）が装着されている。またケーシング（２）
の先端部の内周面に、該ケーシング（２）内に遊種され
る外管（３ａ）との間をシールするためのシール部材（
７）が装着され、シール部材（７）としては図示のよう
な筒状バッキングタイプのものであっても、或は特開平
１−１３１７１−５号公報に示されるようなラッパ状の
形態のものであってもよい。シール部材（７）は例えば
ゴムなどの弾性材から構成される装更に先端ビット（５
）の先端に開口する削孔水の噴口（８）内には逆止弁（
９）が備えられ、噴口（８）は第９図に示されるように
栓部利（６）に形成される場合と、第１０図に示される
ように先端ビット（５）に直接形成される場合とがある
。The casing (2) (see Figure 2) is for horizontally drilling holes in the ground, and is equipped with a cylindrical tip bit (5). A removable plug member (6) is attached. Also casing (2)
A sealing member (for sealing between the outer tube (3a) and the outer tube (3a) which is inserted into the casing (2) is provided on the inner circumferential surface of the distal end of the
7) is installed, and the seal member (7) may be a cylindrical backing type as shown in the figure or a trumpet-shaped seal member as shown in JP-A No. 1-13171-5. It may be. The sealing member (7) is made of an elastic material such as rubber, and also has a tip bit (5).
) A check valve (
9), and the spout (8) is formed either on the stopper (6) as shown in FIG. 9 or directly on the tip bit (5) as shown in FIG. There are cases.
スリーブ注入装置を構成するスリーブ外管（３ａ）は、
第１１図の拡大図に示されるように、注入口（１０ａ）
と、該注入口（１０ａ）の外側を覆う拡縮自在なスリー
ブ（１０ｂ）とからなる注入部（１０）を具備し、該注
入部（１０）は管軸方向に適当な間隔を存して複数個所
に備えられている。また先端には第１２図の拡大図に示
されるように先端コーン（１１）が備えられ、該コーン
（１１）には、シールグラウトの注入口（１１ａ）と該
口（］−１ａ）の口元部に中空押えロッド（４）の挿込
み口（ｌｌｂ）とが形成されている。The sleeve outer tube (3a) constituting the sleeve injection device is
As shown in the enlarged view of FIG. 11, the inlet (10a)
and an expandable sleeve (10b) that covers the outside of the injection port (10a). It is provided in each location. Further, the tip is provided with a tip cone (11) as shown in the enlarged view of FIG. An insertion opening (llb) for the hollow presser rod (4) is formed in the portion.
一方内管（３ｂ）には、第７図に示されるようにダブル
パッカー（１２）が備えられ、パッカー間にスト１ノー
ナ部（図示せず）が形成されている。On the other hand, the inner tube (3b) is provided with a double packer (12), as shown in FIG. 7, and a stumper portion (not shown) is formed between the packers.
中空押えロッド（４）（第４．５図参照）は、外管（３
ａ）の先端コーン（１１）の注入口（ｌｌａ）をシール
グラウトの供給部に接続するためものであり、先端部に
於て先端コーン（１１）の挿込み口（ｌｌｂ）に適宜挿
着される。The hollow holding rod (4) (see Figure 4.5) is attached to the outer tube (3).
This is for connecting the injection port (lla) of the tip cone (11) in a) to the seal grout supply section, and is inserted into the insertion port (llb) of the tip cone (11) as appropriate at the tip. Ru.
本発明工法の実施に際しては、第１図に示すように先ず
最初にガイド管（コ−）が地盤（１３）の垂直壁面を覆
っている遮水壁例えば矢板（１４）にゲートバルブ（１
５）及び基板（１６）を介し取付けられる。ゲートバル
ブ（１５）は矢板（１４）及び基板（１６）に予め形成
された作業口（１７）よりの湧水を防止するためのもの
であり、例えばケーシング（２）の先端ピッ１−（５）
を利用して地盤削孔時に」二記板（１４）、（１６）に
穴を開ける場合は、このようなゲートバルブ（１５）の
備付けを省略してもよい。When carrying out the construction method of the present invention, first, as shown in Fig. 1, a guide pipe (co) is attached to an impermeable wall (for example, a sheet pile (14)) covering a vertical wall surface of the ground (13), and a gate valve (1) is attached to the gate valve (14).
5) and the substrate (16). The gate valve (15) is for preventing water from springing from the work opening (17) formed in advance in the sheet pile (14) and the base plate (16), and for example, the gate valve (15) is for preventing water from springing from the working opening (17) formed in advance in the sheet pile (14) and the base plate (16). )
When holes are made in the plates (14) and (16) during ground drilling using the gate valve (15), the provision of such a gate valve (15) may be omitted.
次にケーシング（２）がガイド管（１）内に口元シール
部（１ａ）を通りゲートバルブ（１５）の近くまで挿入
され、その後バルブ（１５）か開かれる。この状態での
口元止水はゲートバルブ（１５）に代り、口元シール部
（１ａ）により行なわれることになる。Next, the casing (2) is inserted into the guide tube (1) through the mouth seal part (1a) to the vicinity of the gate valve (15), and then the valve (15) is opened. In this state, water at the mouth is stopped by the mouth seal part (1a) instead of the gate valve (15).
次に回転付与装置（図示せず）の作動をしてケーシング
（２）に回転を与えながら、該ケーシング（２）を作業
口（１７）から地盤（１３）内に挿入して行くと、ケー
シング（２）はこの挿入につれ先端ビット（５）の削孔
案内と、先端の噴口（９）（第９．１０図参照）より噴
出される削孔水の削孔案内とにより地盤（１３）を水平
方向に削孔して行き、この削孔はケーシング（２）を継
足しながら所定深度に達するまで継続される。Next, when the casing (2) is inserted into the ground (13) through the work opening (17) while applying rotation to the casing (2) by operating a rotation imparting device (not shown), the casing (2) As it is inserted, the ground (13) is guided by the drilling guide of the tip bit (5) and the drilling water spouted from the nozzle (9) at the tip (see Figure 9.10). Holes are drilled in the horizontal direction, and this drilling is continued until a predetermined depth is reached while adding casing (2).
削孔操作中の状況が第２図に示されている。削孔操作時
には削孔水、地下水などが泥水となり逆流傾向となるが
、ケーシング（２）内への逆流は先端ピッｌ’（５）内
の栓部材（６）及び噴口（８）内の逆止弁（９）（第９
〜１０図参照）により防止されるので、ケーシング（２
）の外側に集中し、逆流した泥水は、ガイド管（１）の
側部の給、排口（１ｂ）よりコック（］、ｂ１）の開閉
操作をして適宜外部に抜き出される。The situation during the drilling operation is shown in FIG. During drilling operations, drilling water, groundwater, etc. become muddy water and tend to flow back, but the backflow into the casing (2) is due to the plug member (6) in the tip pit' (5) and the backflow in the nozzle (8). Stop valve (9) (9th
10)), the casing (2
The muddy water that has concentrated on the outside of the guide tube (1) and flowed back is appropriately extracted to the outside through the supply and discharge ports (1b) on the side of the guide pipe (1) by opening and closing the cocks (], b1).
削孔作業中に於けるケーシング（２）内への泥水逆流防
止により、ケーシング（２）の継足し作業時に既設のケ
ーシング（２）の基端開口より泥水が噴出するという危
険性がなくなる。By preventing muddy water from flowing back into the casing (2) during drilling work, there is no danger of muddy water spouting out from the base end opening of the existing casing (2) during the addition work of the casing (2).
ケーシング（２）による削孔を終えた後は、第３図に示
されるように、スリーブ注入装置の外管（３ａ）がケー
シング（２）内に、その先端コーン（１１）が栓部材（
６）に当接するまで挿入され、この挿入状態に於ては、
外管（３ａ）とケーシング（２）間の間隔が、先端部に
於てシール部）ｒＡ（７）によりシールされている。After the hole has been drilled by the casing (2), as shown in FIG.
6), and in this inserted state,
The space between the outer tube (3a) and the casing (2) is sealed by a sealing part) rA (7) at the tip.
この第３図の状態で、ガイド管（１）の給、排口（１ｂ
）より、ケーシング（２）の外側の［１元部に止水剤（
１８）が注入充填される。止水剤としては止水性のある
ものであればよく、例えばセメントミルク系、水ガラス
系などの止水剤が適当である。In the state shown in Fig. 3, the supply and discharge ports (1b) of the guide tube (1) are
), apply a water stop agent (
18) is injected and filled. The water stop agent may be any water stop agent as long as it has water stop properties, and suitable water stop agents include cement milk type, water glass type, and the like.
止水剤（１８）の注入充填は、ケーシング（２）」二に
ガイド管（１）及びゲートバルブ（１５）に代えて、ケ
ーシング（２）の引抜き手段としてのセンターポールジ
ヤツキ（１９）（第５図参照）を備えるためであり、ガ
イド管（１）及びゲートバルブ（１５）を備えたままで
ケーシング（２）の引抜きを行なう場合は省略してもよ
い。The water stop agent (18) is injected into the casing (2), using a center pole jack (19) as a means for pulling out the casing (2) instead of the guide pipe (1) and gate valve (15). (see FIG. 5), and may be omitted if the casing (2) is to be pulled out with the guide pipe (1) and gate valve (15) still provided.
次に第４図に示されるように、ガイド管（１−）及びゲ
ートバルブ（１５）がケーシング（２）、ｈより取り外
され、之等に代り、止水剤（１８）の流出防止用の金物
（２０）が取付けられる。更に外管（３ａ）内に中空押
えロッド（４）が挿入され、該ロッド（４）の先端部は
、先端コーン（１１）の挿込み穴（１］、ｂ）（第１２
図参照）内に挿着される。先端コーン（１１）内の注入
口（１１ａ）は押えロッド（４）を介し、シールグラウ
トの供給部に連絡される。Next, as shown in Fig. 4, the guide pipe (1-) and the gate valve (15) are removed from the casing (2), h, and in their place are used to prevent the water stopper (18) from flowing out. Hardware (20) is attached. Furthermore, a hollow presser rod (4) is inserted into the outer tube (3a), and the tip of the rod (4) is inserted into the insertion hole (1], b) (12th) of the tip cone (11).
(see figure). The injection port (11a) in the tip cone (11) is connected to the sealing grout supply via the holding rod (4).
次に第５図に示されるように、ケーシング（２）上にセ
ンターホールジヤツキ（１９）が設置され、該ジヤツキ
（１，９）はその受台（１９ａ）を介し基板（１６）に
支持される。Next, as shown in FIG. 5, a center hole jack (19) is installed on the casing (2), and the jack (1, 9) is supported on the board (16) via its pedestal (19a). be done.
この第５図に示す状態で、外管（３ａ）を、押えロッド
（４）を介し定位置に拘束した状態で、センターホール
ジヤツキ（１９）の作動をして僅かに後退させると、外
管（３ａ）の先端コーン（１１）は栓部材（６）を押抜
くと同時に削孔（２１）の最深部内に露出する。よって
この状態で中空押えロッド（４）から先端コーン（１１
）の注入口（１１ａ）を通じ削孔（２１）内にシールグ
ラウト（２２）（第６図参照）が注入充填され、同時に
この注入充填につれケーシング（２）がセンターホール
ジヤツキ（１９）の作動をして徐々に外部に引き抜かれ
て行（。シールグラウト（２２）の注入充填につれ、ケ
ーシング（２）が引き抜かれて行くので、削孔の孔壁が
崩れ落ちるというような危険性がなくなる。また削孔内
の全体にシールグラウト（２２）が注入充填されるので
、シールグラウ１−（２２）の注入充填層が部分崩壊す
るというような危険性もなくなる。In the state shown in Fig. 5, when the outer tube (3a) is restrained in a fixed position via the presser rod (4) and the center hole jack (19) is operated to move it back slightly, the outer tube (3a) is released. The tip cone (11) of the tube (3a) is exposed in the deepest part of the drilled hole (21) at the same time as the plug member (6) is pushed out. Therefore, in this state, the tip cone (11) is removed from the hollow presser rod (4).
) The sealing grout (22) (see Fig. 6) is injected and filled into the drilled hole (21) through the injection port (11a) of As the seal grout (22) is injected and filled, the casing (2) is pulled out, eliminating the risk of the wall of the drilled hole collapsing. Since the sealing grout (22) is injected and filled into the entire borehole, there is no risk that the injected filling layer of the sealing grout 1-(22) will partially collapse.
ケーシング（２）の口元部までの引抜きと、削孔（２１
）内へのシールグラウト（２２）の注入充填を終えた後
は、押えロッド（４）を抜出した後に、外管（３ａ）内
にブダルパッカー（１２）付の内管（３ｂ）が挿入され
、この内外管からなるスリーブ注入装置を利用して、第
６図に示されるように、シールグラウト（２２）の口元
部に止水剤（２３）が注入充填され、口元止水が行なわ
れる。この口元止水は外管（３ａ）Ｊ：より、ケーシン
グ（２）、センターホールジヤツキ（１９）及び金物（
２０）を取り除くために必要である。Pulling out the mouth of the casing (2) and drilling holes (21)
) After the sealing grout (22) has been injected and filled into the inside, the holding rod (4) is pulled out, and the inner pipe (3b) with the Budal packer (12) is inserted into the outer pipe (3a). As shown in FIG. 6, the water stopper agent (23) is injected into the mouth of the seal grout (22) using this sleeve injection device consisting of an inner and outer tube to seal the mouth. This mouth water stop is from the outer pipe (3a), the casing (2), the center hole jack (19) and the hardware (
20).
シールグラウト（２２）の養生固化を終えた後は、ケー
シング（２）、ジヤツキ（１９）及び金物（２０）が取
り外され、次いで内外管（３ａ）（３ｂ）を用いて、第
７図のクラッキングと水押しを経て、第８図のグラウト
注入が行なわれ、益に水平方向からの地盤改良の目的が
達成される。After curing and solidifying the seal grout (22), the casing (2), jack (19) and hardware (20) are removed, and then the inner and outer tubes (3a) and (3b) are used to crack the grout as shown in Fig. 7. After water pumping, grout injection as shown in Figure 8 is carried out, and the purpose of horizontal ground improvement is achieved.
地盤改良後は、内管（３ｂ）は引抜き回収され、外管（
３ａ）は埋殺しされる。After ground improvement, the inner pipe (3b) is pulled out and collected, and the outer pipe (3b) is removed.
3a) is buried.
効 果
本発明工法によれば、削孔内へのシールグラウトの注入
充填を、外管の先端コーンを利用して、削孔の最深部か
ら行ないながらケーシングを徐々に引抜（ようにしたの
で、シールグラウト層として高品質のものを造成でき、
水平スリーブ注入工法の信頼性を向」二できる特徴を有
する。Effects According to the method of the present invention, sealing grout is injected into the borehole from the deepest part of the borehole using the tip cone of the outer tube, and the casing is gradually pulled out. A high-quality seal grout layer can be created,
It has features that can improve the reliability of the horizontal sleeve injection method.
第１図は本発明工法に於けるガイド管の取付け時の状況
を概略的に示す一部縦断面図、第２図は同削孔時の状況
を概略的に示す一部縦断面図、第３図は同ケーシング内
への外管の挿入状況を概略的に示す縦断面図、第４図は
同外管内への押えロッドの挿入状況を概略的に示す縦断
面図、第５図は同外管による栓部利の押抜き状況を概略
的に示す縦断面図、第６図は同削孔内へのシールグラウ
トの充填状況を概略的に示す縦断面図、第７図はクラッ
キングと水押しの状況を、また第８図はグラウトの注入
の状況を、それぞれ概略的に示す縦断面図である。
図に於て、（１）はガイド管、（２）はケーシング、（
３ａ）は外管、（３ｂ）は内管、（４）は中空押えロッ
ドである。
（以 」二）
平成２年１０月９日Fig. 1 is a partial vertical sectional view schematically showing the situation when installing the guide pipe in the method of the present invention, and Fig. 2 is a partial vertical sectional view schematically showing the situation when drilling the same hole. Figure 3 is a vertical sectional view schematically showing how the outer tube is inserted into the casing, Figure 4 is a vertical sectional view schematically showing how the presser rod is inserted into the outer tube, and Figure 5 is the same. Fig. 6 is a vertical cross-sectional view schematically showing how the plug hole is punched out by the outer tube, Fig. 6 is a longitudinal cross-sectional view schematically showing how seal grout is filled into the hole, and Fig. 7 shows cracking and water leakage. FIG. 8 is a vertical cross-sectional view schematically showing the pressing situation, and FIG. 8 is a longitudinal sectional view schematically showing the grouting situation. In the figure, (1) is the guide tube, (2) is the casing, (
3a) is an outer tube, (3b) is an inner tube, and (4) is a hollow holding rod. (hereinafter ``2) October 9, 1990
Claims (1)
面を覆う土留壁等に取付けられたガイド管及び土留壁等
を通じ、ケーシングの外側を上記ガイド管の口元シール
部によりシールした状態で、水平に所定深度まで貫入し
、この貫入はケーシング先端に装着した筒状先端ビット
の削孔案内と、先端ビットの先端に開口する噴口より噴
出される削孔水の削孔案内とにより行ない、また貫入作
業時に発生する泥水は、ケーシング内への逆流を先端ビ
ットの内腔部内に押抜き可能に挿着した栓部材及び上記
噴口内に備えた逆止弁により防止することにより、ケー
シングの外側を逆流させて、上記ガイド管に備付けの給
、排口より適宜外部に排出し、次に上記ケーシング内に
２重管のうちの先端コーン付スリーブ外管を挿入して、
先端ビット内の栓体を押抜くと共に、外管の先端コーン
に設けた注入口を、中空押えロッドを介してシールグラ
ントの供給部に接続し、次いで上記押えロッドからこれ
に接続する注入口を通じ、ケーシング貫入により形成さ
れた削孔内に、外管とケーシング間の隙間を、該ケーシ
ングの先端部の内周面に装着したシール部材によりシー
ルしつつ注入充填し、この注入充填につれケーシングを
引抜き、次いで外管内に、ダブルパッカー付内管を挿入
し、常法通り薬液注入を行なうことを特徴とする水平ス
リーブ注入工法。(1) Place the casing in the target soil through a guide pipe and earth retaining wall installed on the earth retaining wall covering the vertical wall surface of the ground, with the outside of the casing sealed by the mouth seal part of the guide pipe, The hole is penetrated horizontally to a predetermined depth, and this penetration is performed by the drilling guidance of a cylindrical tip bit attached to the tip of the casing, and the drilling guidance of drilling water spouted from a spout opened at the tip of the tip bit, and The muddy water generated during the penetration work is prevented from flowing back into the casing by a plug member removably inserted into the bore of the tip bit and a check valve provided in the spout. The flow is reversed and discharged to the outside from the supply and outlet ports provided in the guide tube, and then the sleeve outer tube with a cone at the tip of the double tube is inserted into the casing.
At the same time as pushing out the stopper inside the tip bit, connect the injection port provided on the tip cone of the outer tube to the supply part of the seal gland via the hollow holding rod, and then press the injection port from the holding rod through the injection port connected to this. Inject and fill the hole formed by penetrating the casing while sealing the gap between the outer tube and the casing with a sealing member attached to the inner peripheral surface of the tip of the casing, and as the casing is filled, the casing is pulled out. A horizontal sleeve injection method characterized in that an inner pipe with a double packer is then inserted into the outer pipe and a chemical solution is injected in the usual manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2179854A JPH0814105B2 (en) | 1990-07-06 | 1990-07-06 | Horizontal sleeve injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2179854A JPH0814105B2 (en) | 1990-07-06 | 1990-07-06 | Horizontal sleeve injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0468109A true JPH0468109A (en) | 1992-03-03 |
| JPH0814105B2 JPH0814105B2 (en) | 1996-02-14 |
Family
ID=16073080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2179854A Expired - Fee Related JPH0814105B2 (en) | 1990-07-06 | 1990-07-06 | Horizontal sleeve injection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814105B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06280248A (en) * | 1993-03-29 | 1994-10-04 | Osaka Bosui Constr Co Ltd | Composite injection method |
| JP2007016394A (en) * | 2005-07-05 | 2007-01-25 | Koken Boring Mach Co Ltd | Pipe installing construction method and hole drilling device |
| JP2011032831A (en) * | 2009-08-05 | 2011-02-17 | Toa Harbor Works Co Ltd | Method of injecting ground improving chemical |
| JP2017150226A (en) * | 2016-02-24 | 2017-08-31 | 清水建設株式会社 | Hole drilling mouth device, hole drilling device and hole drilling method |
| CN108868822A (en) * | 2018-06-29 | 2018-11-23 | 平顶山平煤机煤矿机械装备有限公司 | The intelligent slip casting aperture apparatus of tunnel lining trolley |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101457875B1 (en) * | 2014-04-28 | 2014-11-04 | (주)바로건설 | Guide and sealing implement for leachate from retaining wall |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01131715A (en) * | 1987-11-16 | 1989-05-24 | Osaka Bosui Constr Co Ltd | Ground improving work by horizontal injection of chemical grout |
| JPH01230809A (en) * | 1988-03-09 | 1989-09-14 | Kazutoshi Suzuki | Grout pouring method |
-
1990
- 1990-07-06 JP JP2179854A patent/JPH0814105B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01131715A (en) * | 1987-11-16 | 1989-05-24 | Osaka Bosui Constr Co Ltd | Ground improving work by horizontal injection of chemical grout |
| JPH01230809A (en) * | 1988-03-09 | 1989-09-14 | Kazutoshi Suzuki | Grout pouring method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06280248A (en) * | 1993-03-29 | 1994-10-04 | Osaka Bosui Constr Co Ltd | Composite injection method |
| JP2007016394A (en) * | 2005-07-05 | 2007-01-25 | Koken Boring Mach Co Ltd | Pipe installing construction method and hole drilling device |
| JP2011032831A (en) * | 2009-08-05 | 2011-02-17 | Toa Harbor Works Co Ltd | Method of injecting ground improving chemical |
| JP2017150226A (en) * | 2016-02-24 | 2017-08-31 | 清水建設株式会社 | Hole drilling mouth device, hole drilling device and hole drilling method |
| CN108868822A (en) * | 2018-06-29 | 2018-11-23 | 平顶山平煤机煤矿机械装备有限公司 | The intelligent slip casting aperture apparatus of tunnel lining trolley |
| CN108868822B (en) * | 2018-06-29 | 2024-03-29 | 平顶山平煤机煤矿机械装备有限公司 | Intelligent grouting hole device for tunnel lining trolley |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0814105B2 (en) | 1996-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100510274C (en) | Construction method of enclosing level rotary-jet pile hole-mouth using double-liquid slip jection method | |
| JP4679966B2 (en) | Boring hole closing method and equipment | |
| JPS6286226A (en) | Method and apparatus for arranging assembling member in ground receiving water pressure through sheet pile | |
| JPH0468109A (en) | Injection method with horizontal sleeve | |
| US20040104049A1 (en) | Apparatus and method for forming a support column in soil | |
| JP2867204B2 (en) | Construction method of outer pipe for injection under pressurized water | |
| JP3449613B2 (en) | Ground injection method and its equipment | |
| JP2937661B2 (en) | Grout injection method | |
| CN113529703B (en) | Double-liquid sealing grouting leakage-stopping construction method for foundation pit support anchor cable leakage | |
| JP2838390B2 (en) | Strainer tube and its installation method, and chemical solution injection method using strainer tube | |
| JP4300326B2 (en) | Ground improvement material injection method | |
| JPH0476110A (en) | Installation method for medical fluid injection strainer pipe and strainer pipe therefor | |
| JPH01131715A (en) | Ground improving work by horizontal injection of chemical grout | |
| JP4062009B2 (en) | Penetration injection method | |
| JPH059926A (en) | Sleeve-grouting method | |
| JP5400083B2 (en) | Ground improvement chemical injection pipe and ground improvement chemical injection method | |
| EP0584183A1 (en) | A rock or concrete injection method and a device for performing the method | |
| TW200303955A (en) | Method and device for drilling holes | |
| JP2954271B2 (en) | Crack injection method | |
| KR101015555B1 (en) | Wedge type seal apparatus | |
| JP2002256790A (en) | Method and device for filling drilled hole based on grout material injection via down-the-hole drill | |
| JPS62296006A (en) | Method and apparatus for back-filling of tunnel and grouting of surrounding ground for improvement | |
| JPH0533332A (en) | Ground improvement method | |
| JP2954307B2 (en) | Crack injection equipment | |
| JPS6360169B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090214 Year of fee payment: 13 |
|
| LAPS | Cancellation because of no payment of annual fees |