JPH0476110A - Installation method for medical fluid injection strainer pipe and strainer pipe therefor - Google Patents
Installation method for medical fluid injection strainer pipe and strainer pipe thereforInfo
- Publication number
- JPH0476110A JPH0476110A JP19132590A JP19132590A JPH0476110A JP H0476110 A JPH0476110 A JP H0476110A JP 19132590 A JP19132590 A JP 19132590A JP 19132590 A JP19132590 A JP 19132590A JP H0476110 A JPH0476110 A JP H0476110A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- strainer
- grout
- tip
- strainer pipe
- 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 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 14
- 238000009434 installation Methods 0.000 title abstract description 7
- 239000012530 fluid Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 238000009412 basement excavation Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000011440 grout Substances 0.000 abstract description 31
- 238000010276 construction Methods 0.000 abstract description 9
- 239000012528 membrane Substances 0.000 abstract description 2
- 235000019353 potassium silicate Nutrition 0.000 abstract description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- 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」
この発明は、薬液注入用ストレーナ−管を地中に設置す
る工法、およびにこれに用いるストレーナ−管に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a construction method for installing a strainer pipe for injecting chemical liquid underground, and a strainer pipe used therein.
「従来の技術」
従来、薬液注入による地盤改良工法として、先端にビッ
トを有する単管や多重管からなる注入管を用いて削孔し
た後、注入管を注入ステップ毎に引き上げながらその先
端から注入薬液を吐出させるロンド法、および予めポー
リングにより削孔した注入孔内にストレーナ−管を挿入
し、その内部に砂あるいは軟弱に硬化するシール材を充
填した後、上層の注入ステップから下層の注入ステップ
にかけてストレーナ−管内のシール材を順次段階的に洗
い流しながら各ステツブ毎に注入グラウトを圧送して周
辺地盤に注入するストレーナ−法が知られている。``Conventional technology'' Conventionally, as a ground improvement method using chemical injection, a hole is drilled using an injection pipe consisting of a single pipe or multiple pipes with a bit at the tip, and then the injection pipe is pulled up at each injection step and injected from the tip. The Rondo method is used to discharge the chemical solution, and a strainer tube is inserted into the injection hole that has been drilled in advance by polling, and the inside is filled with sand or a sealing material that hardens softly, and then the upper layer injection step and the lower layer injection step are performed. A strainer method is known in which grout is pumped into each step and injected into the surrounding ground while washing away the sealant in the strainer pipe step by step.
［発明が解決せんとする問題点」
上記ロッド法においては、注入管を削孔に用いて単管ロ
ッドと同様に直接地中に設置できるため、地層の如何に
かかわらず設置が簡便である。[Problems to be Solved by the Invention] In the above-mentioned rod method, the injection pipe can be used to drill holes and can be installed directly underground in the same way as a single pipe rod, so installation is easy regardless of the stratum.
しかし、注入グラウトを先端の小数の吐出孔から吐出さ
せるため、周辺地盤への浸透が不均一であるという問題
があり、また注入工程上注入管を引き上げながら下層の
注入ステップから上層の注入ステップにかけて注入して
行くため、注入グラウトが上層側に逸散し易く、また注
入管周囲の間隙から地上に流出するという問題があった
。However, since the grout is discharged from a small number of discharge holes at the tip, there is a problem in that the penetration into the surrounding ground is uneven, and during the grouting process, the grout is pulled up from the lower layer to the upper layer. Since the grout is injected continuously, there is a problem in that the injected grout tends to escape to the upper layer side, and also flows out to the ground through the gap around the injection pipe.
また、ストレーナ−法においては、注入ステップに対応
した部分における多数の吐出孔から注入グラウトを吐出
させ、順次上層から下層の注入ステップに注入して行く
ため、グラウトの周辺地盤への浸透が均一で注入管周囲
の間隙から地上に流出することがないという利点がある
が、ストレーナ−管を削孔に利用できなかったため、予
めポーリングによる注入孔を削孔してポーリンブロンド
を引き抜いた後に、ストレーナ−管を建て込む作業を要
し、その設置に相当の労力と工費を要するという問題が
あった。In addition, in the strainer method, grout is discharged from a large number of discharge holes in the portion corresponding to the injection step, and is sequentially injected from the upper layer to the lower layer injection step, so that the grout permeates into the surrounding ground evenly. It has the advantage that it does not leak to the ground through the gap around the injection pipe, but since the strainer pipe could not be used for drilling holes, the injection hole was drilled in advance by poling and the Paulin Blonde was pulled out, and then the strainer pipe was removed. There was a problem in that it required work to build pipes, and that installation required considerable labor and construction costs.
また、ストレーナ−管では地山の崩落が少ない粘性地盤
に対しては比較的設置が容易であるが、注入施工の現場
に最も多い崩落性の砂質地盤や、砂礫層及び礫層地質に
おいては設置が容易でない。In addition, strainer pipes are relatively easy to install on viscous ground where there is little collapse of the ground, but they are not suitable for sandy ground, which is most common at injection construction sites, and in sandy and gravelly layers. Installation is not easy.
「問題点を解決するための手段」
この発明は前記従来の課題を解決するために、ストレー
ナ−管及びその内部先端付近まで挿入した内管に掘削水
を圧送し、ストレーナ−管の先端及び周囲の吐出孔と内
管の先端部から掘削水を吐出させながら削孔し、所要深
度に設置する薬液注入用ストレーナ−管設置工法を提案
するものである。"Means for Solving the Problems" In order to solve the above-mentioned conventional problems, the present invention provides a method for force-feeding excavation water to a strainer pipe and an inner pipe inserted up to the vicinity of its internal tip, and This paper proposes a strainer-pipe installation method for chemical liquid injection, in which a hole is drilled while discharging excavation water from the discharge hole and the tip of the inner pipe, and is installed at a required depth.
またこの発明は、上記ストレーナ−管及び内管をフレキ
シブルな合成樹脂製として同様の施工を行うようにした
、薬液注入用ストレーナ−管の設置工法を提案するもの
である。The present invention also proposes a method for installing a strainer pipe for injecting chemical liquids, in which the strainer pipe and inner pipe are made of flexible synthetic resin and the same construction is carried out.
「作用」
ストレーナ−管及びその内部先端部まで挿入した内管に
それぞれスイベルを介して掘削水を圧送し、ストレーナ
−管を上下動しながら削孔する。``Operation'' Drilling water is pumped through the swivel to the strainer tube and the inner tube inserted up to its internal tip, and the hole is drilled while moving the strainer tube up and down.
このとき掘削水は、ストレーナ−管の先端において内管
及びその周囲の間隙から吐出すると共に、ストレーナ−
管周囲の多数の吐出孔から吐出し、ストレーナ−管周囲
の間隙に沿って上方に円滑に循環流出するため、ストレ
ーナ−管内に掘削泥水が逆流したり、先端にスライムが
目詰まりすることはなく、そのため砂質層や砂礫層にお
いても泥水中の砂礫による吐出孔の１」詰まりもなく確
実に削孔してストレーナ−管を直接地中に貫入すること
ができる。At this time, excavation water is discharged from the inner pipe and the gap around it at the tip of the strainer pipe, and the water is discharged from the strainer pipe.
The discharge is discharged from the numerous discharge holes around the pipe, and it circulates smoothly upward along the gap around the strainer pipe, so there is no possibility of drilling mud flowing back into the strainer pipe or clogging the tip with slime. Therefore, even in a sandy layer or a gravel layer, the strainer pipe can be inserted directly into the ground by reliably drilling the discharge hole without clogging it with sand and gravel in the muddy water.
また、ストレーナ−管及び内管としてフレキシブルな合
成樹脂製パイプを使用することによリ、−本の長尺パイ
プを地上部ではほぼ水平に配して削孔部において屈曲さ
せ、地中に連続的に送り込むことが可能となり、鉄製パ
イプを用いる場合のように短尺なパイプをジヨイントし
ながら送り込む手間を削減することができる。In addition, by using flexible synthetic resin pipes as strainer pipes and inner pipes, - long pipes are placed almost horizontally above ground and bent at the borehole, allowing them to continue underground. This makes it possible to feed the material in a precise manner, reducing the need for jointing and feeding a short pipe, which is required when using iron pipes.
注入に際しては、内管をストレーナ−管内の硬化したシ
ールグラウト中に順次上層から下層の注入ステップにか
けて移動させながら、内管内に圧送した注入グラウトを
硬化したシールグラウトの膜を破って多数の吐出孔から
周辺地盤に注入するため、グラウトは不特定に逸散する
ことなく均一に浸透し、確実な注入効果が期待できる。During injection, the inner tube is moved through the hardened seal grout in the strainer tube sequentially from the upper layer to the lower layer, and the injection grout pumped into the inner tube breaks through the hardened seal grout film to form a large number of discharge holes. Because the grout is injected into the surrounding ground, it penetrates uniformly without escaping indefinitely, and a reliable injection effect can be expected.
「実施例」
以下この発明を図面に示す実施例について説明すると、
第１〜４図に示す第１発明において、鋼製ストレーナ−
管１の内部にその先端開口部付近まで内管（単管または
二重管）２を挿入し、それぞれの頭部にスイベル３，４
を接続する。"Embodiments" Below, embodiments of the present invention shown in the drawings will be described.
In the first invention shown in FIGS. 1 to 4, a steel strainer
Insert the inner tube (single tube or double tube) 2 into the tube 1 up to the vicinity of its tip opening, and attach the swivels 3 and 4 to the head of each tube.
Connect.
注入部において、第１図に示すようにストレー６＝
−ナー管１及び内管２に掘削水を圧送し、ストレーナ−
管１の先端開口及び周囲の吐出孔５と内管２の先端開口
から掘削水を吐出させると共に、ストレーナ−管１をそ
の軸方向に進退作動させ、その先端で地盤を突き崩しな
がら削孔する（必要に応じて先端にビットを取り付けて
回転掘削することも可能）。In the injection section, as shown in Fig. 1, excavation water is force fed to the strainer pipe 1 and inner pipe 2, and the strainer
Excavation water is discharged from the tip opening of the pipe 1, the surrounding discharge hole 5, and the tip opening of the inner tube 2, and the strainer tube 1 is moved forward and backward in its axial direction to drill holes while breaking the ground with its tip. (If necessary, a bit can be attached to the tip for rotary drilling).
このとき掘削水は、ストレーナ−管１の先端において内
管２及びその周囲の間隙から吐出すると共に、ストレー
ナ−管１の周囲の多数の吐出孔５から吐出するため、ス
トレーナ−管１内に掘削泥水が逆流することはなく、ス
トレーナ−管１と削孔６の周壁との間隙に沿って上方に
円滑に循環流出する。At this time, the excavated water is discharged from the inner pipe 2 and the gap around it at the tip of the strainer pipe 1, and is also discharged from the numerous discharge holes 5 around the strainer pipe 1. The muddy water does not flow backward, but smoothly circulates and flows upward along the gap between the strainer pipe 1 and the circumferential wall of the drilled hole 6.
従って、砂質層や砂礫層などの崩落性地盤においても泥
水中の砂礫による吐出孔５に目詰まりを生ずることはな
く、またストレーナ−管１に接続管１′をジヨイントす
る場合等、掘削水の圧送を一時的に停止したときに、ス
トレーナ−管１の先端にスライムが溜まっても、ストレ
ーナ−管１と内管２の先端から掘削水を吐出することに
より除去することができ、目詰まりすることはない。Therefore, even in collapsible ground such as a sandy layer or a gravel layer, the discharge hole 5 will not be clogged with sand and gravel in muddy water, and when connecting the connecting pipe 1' to the strainer pipe 1, etc., the excavated water Even if slime accumulates at the tip of strainer tube 1 when pressure feeding is temporarily stopped, it can be removed by discharging excavation water from the tips of strainer tube 1 and inner tube 2, preventing clogging. There's nothing to do.
このようにして必要に応じ継手管１をジヨイントしなが
ら計画深度まで削孔してストレーナ−管１と内管２を削
孔と同時に直接地中に設置する。In this way, the joint pipe 1 is jointed as necessary while drilling to the planned depth, and the strainer pipe 1 and inner pipe 2 are installed directly underground at the same time as the drilling.
このようにストレーナ−管１を地中に設置した後、第２
図に示すように内管２内に濃度の薄い水ガラス系グラウ
ト等、比較的軟弱に硬化するシールグラウト７を圧送し
、順次内管２を引き上げながらストレーナ−管１及びそ
の吐出孔５から削孔６内に充填して硬化させる。After installing the strainer pipe 1 underground in this way, the strainer pipe 1 is installed underground.
As shown in the figure, seal grout 7, which hardens relatively softly, such as water glass grout with a low concentration, is fed into the inner tube 2 under pressure, and while the inner tube 2 is pulled up, it is removed from the strainer tube 1 and its discharge hole 5. It is filled into the holes 6 and hardened.
次いで第３，４図に示すように、内管２をストレーナ−
管１内の軟弱に硬化したシールグラウト中に、順次上層
から下層の注入ステップＳ１゜Ｓ２．Ｓ３・・にかけて
段階的に移動させながら、内管２内に圧送した注入グラ
ウト８を硬化したシールグラウト７の膜を破って周辺地
盤に注入する。Next, as shown in Figs. 3 and 4, the inner tube 2 is put through a strainer.
Into the slightly hardened seal grout in the pipe 1, sequentially pouring steps S1 to S2 from the upper layer to the lower layer. The grout 8 pumped into the inner pipe 2 is injected into the surrounding ground by breaking the film of the hardened seal grout 7 while moving step by step over S3....
この注入工程においては、順次上層から下層の注入ステ
ップにかけて移動させながら、内管２から注入グラウト
８をシールグラウトの膜を破ってストレーナ−管１多数
の吐出孔５から周辺地盤に注入するので、グラウト８が
不特定範囲に逸散することなく均一に浸透し、確実な注
入効果が期待できる。In this injection step, the injection grout 8 is poured from the inner tube 2 through the seal grout membrane and injected into the surrounding ground from the many discharge holes 5 of the strainer tube 1 while moving from the upper layer to the lower layer injection step in sequence. The grout 8 penetrates uniformly without scattering to an unspecified area, and a reliable injection effect can be expected.
また、シールグラウト７内に内管２を挿入して注入する
ため、シールグラウト７のパッカー効果により注入グラ
ウト８の地上への流出を確実に防止することができる。Further, since the inner tube 2 is inserted into the seal grout 7 and the injection is performed, the packer effect of the seal grout 7 can reliably prevent the injection grout 8 from flowing out onto the ground.
次に、第５図に示す第２発明は、地盤がシルト系砂質土
のように削孔し易い地層である場合において、ストレー
ナ−管１及び内管２として塩化ビニール管等、湾曲自在
なフレキシブルな長尺合成樹脂管を用いたもので、この
ストレーナ−管１及び内管２を地上部では削孔水やグラ
ウト圧送装置などに接続して操作し易いようにほぼ水平
に配し、削孔部において先端側を屈曲させ、上記１発明
と同様の方法によりストレーナー管１及び内管２に掘削
水を圧送しながら削孔し、順次地中に連続的に送り込ん
で削孔と同時に直接設置する。Next, in the second invention shown in FIG. 5, when the ground is a stratum that is easy to drill holes, such as silt-based sandy soil, the strainer pipe 1 and the inner pipe 2 are made of a flexible vinyl chloride pipe or the like. The strainer pipe 1 and inner pipe 2 are arranged almost horizontally above ground so that they can be easily operated by connecting them to a drilling water or grout pumping device. The tip side is bent at the hole, and the hole is drilled while force-feeding excavation water to the strainer pipe 1 and the inner pipe 2 using the same method as in the first invention above, and the pipe is successively fed into the ground and installed directly at the same time as the hole is drilled. do.
このようにストレーナ−管１及び内管２として湾曲自在
なフレキシブルな長尺合成樹脂管を用いることによって
、鉄製パイプを用いる場合のように短尺なパイプをジヨ
イントし、かつスイベルを着は代えながら送り込む労力
及び時間を削減することができると共に、ストレーナ−
管１の吐出孔５の穿孔が容易で、しかもジヨイントの形
成も不要であるため、注入管の製造コストを大幅に削減
することができ、現場で簡単に製作することが可能とな
る。By using flexible long synthetic resin pipes as the strainer pipe 1 and the inner pipe 2, it is possible to joint short pipes like when using iron pipes, and feed the pipes while changing the swivels. In addition to reducing labor and time, the strainer
Since the discharge hole 5 of the pipe 1 is easily drilled and there is no need to form a joint, the manufacturing cost of the injection pipe can be significantly reduced, and it can be easily manufactured on site.
ストレーナ−管１の頭部にネジ込み式ジヨイント等によ
り着脱自在に取り付けたスイベル３は、第６図に示すよ
うにキャップ状に形成し、その中心部に内管２をスライ
ド自在かつ水封状に挿通する内管通孔９が設けられ１、
側面には水またはグラウトを導入する配管接続口１０が
設けられている。The swivel 3, which is detachably attached to the head of the strainer tube 1 with a screw-in joint or the like, is formed into a cap shape as shown in FIG. An inner tube passage hole 9 is provided to be inserted into the tube 1,
A piping connection port 10 for introducing water or grout is provided on the side surface.
「発明の効果」
以上の通りこの発明によれば、掘削水はストレーナ−管
および内管の頭部に接続したスイベルから同時に圧送し
、ストレーナ−管の先端において内管及びその周囲の間
隙から吐出すると共に、ストレーナ−管周囲の多数の吐
出孔から吐出し、ストレーナ−管周囲の間隙に沿って上
方に円滑に循環流出するので、ストレーナ−管内に掘削
泥水が逆流したり、先端にスライムが目詰まりすること
はなく、そのため砂質層や砂礫層においても泥水中の砂
礫による吐出孔の目詰まりもなく確実に削孔してストレ
ーナ−管を直接地中に貫入することができ、ストレーナ
−管の設置が能率的で、工費を大幅に削減することが可
能となる。"Effects of the Invention" As described above, according to this invention, excavation water is simultaneously pumped from the swivel connected to the head of the strainer pipe and the inner pipe, and is discharged from the inner pipe and the gap around it at the tip of the strainer pipe. At the same time, the discharge from the numerous discharge holes around the strainer tube smoothly circulates upward along the gap around the strainer tube, preventing drilling mud from flowing back into the strainer tube and slime at the tip. Therefore, even in sandy or gravelly layers, the strainer pipe can be reliably drilled and inserted directly into the ground without clogging the discharge hole with gravel in muddy water. Installation is efficient and construction costs can be significantly reduced.
また、ストレーナ−管及び内管としてフレキシブルな合
成樹脂製パイプを使用することにより、−本の長尺パイ
プを地上部ではほぼ水平に配して削孔部において屈曲さ
せ、地中に連続的に送り込むことが可能となり、鉄製パ
イプを用いる場合のように短尺なパイプをジヨイントし
、かつスイベルを着は代えながら送り込む労力と時間を
大幅に削減することができ、施工能率の大幅な向上と施
工コストの大幅な削減が可能となる共に、ストレーナ−
管１の吐出孔５の穿孔が容易で、しかもジヨイントの形
成も不要であるため、注入管の製造コストを大幅に削減
することができ、現場で簡単に製作することが可能とな
る。In addition, by using flexible synthetic resin pipes as strainer pipes and inner pipes, the long pipes are placed almost horizontally above ground and bent at the borehole, allowing them to be continuously inserted into the ground. This makes it possible to greatly reduce the labor and time required to joint short pipes and feed them while changing the swivel, unlike when using iron pipes, which greatly improves construction efficiency and construction costs. In addition to making it possible to significantly reduce
Since the discharge hole 5 of the tube 1 is easily bored and there is no need to form a joint, the manufacturing cost of the injection tube can be significantly reduced, and it can be easily manufactured on site.
また、ストレーナ−管頭部に取り付けたスイベルの内管
通孔に内管をスライド自在かつ水封状に挿通してなるの
で、注入工程において内管を注入ステップに応じて昇降
することができる。Further, since the inner tube is slidably inserted into the inner tube passage hole of the swivel attached to the strainer tube head in a water-sealed manner, the inner tube can be moved up and down in accordance with the injection step during the injection process.
第１図〜第４図は第１発明において注入管の設置から注
入までの工程を順に示す縦断正面図、第５図は第２発明
の施工状態を示す縦断正面図、第６図はこの発明のスト
レーナ−管の頭部のスイベルを示す縦断正面図である。
１・・ストレーナ−管、１′ ・接続管、２・・内管
、３，４・・スイベル、
５・・吐出孔、６・・削孔、
７・・シールグラウト、８・・注入グラウト、ＳＬ、Ｓ
２．Ｓ３・・注入ステップ、９・・内管通孔、１０・・
配管接続口。Figures 1 to 4 are vertical sectional front views showing the steps from installing the injection pipe to injection in order in the first invention, Figure 5 is a vertical sectional front view showing the construction state of the second invention, and Figure 6 is this invention. FIG. 3 is a longitudinal sectional front view showing the swivel of the head of the strainer tube. 1... Strainer pipe, 1' - Connecting pipe, 2... Inner pipe, 3, 4... Swivel, 5... Discharge hole, 6... Drilling hole, 7... Seal grout, 8... Injection grout, S.L., S.
2. S3...Injection step, 9...Inner tube through hole, 10...
Piping connection port.
Claims (1)
内管に掘削水を圧送し、ストレーナー管の先端及び周囲
の吐出孔と前記内管の先端部から掘削水を吐出させなが
ら削孔し、所要深度に設置することを特徴とする薬液注
入用ストレーナー管の設置工法。 ２）１本のフレキシブルな合成樹脂製ストレーナー管及
びその内部先端付近まで挿入した１本のフレキシブルな
合成樹脂製内管に掘削水を圧送し、前記ストレーナー管
の先端及び周囲の吐出孔と前記内管の先端部から掘削水
を吐出させながら削孔し、所要深度に設置することを特
徴とする薬液注入用ストレーナー管の設置工法。 ３）ストレーナー管の頭部に取り付けたキャップ状のス
イベルの中心部に設けた内管通孔に、頭部にスイベルが
取り付けられた内管を前記ストレーナー管及びその内部
先端付近までスライド自在かつ水封状に挿通してなるこ
とを特徴とするストレーナー管[Claims] 1) Drilling water is force-fed to a strainer pipe and an inner pipe inserted up to the vicinity of its internal tip, and the drilling water is discharged from the tip of the strainer pipe, the surrounding discharge hole, and the tip of the inner pipe. A method of installing strainer pipes for chemical liquid injection, which is characterized by drilling holes and installing them at the required depth. 2) Excavation water is force-fed into one flexible synthetic resin strainer pipe and one flexible synthetic resin inner pipe inserted up to the vicinity of the tip of the strainer pipe, and the water is pumped through the tip of the strainer pipe and the surrounding discharge hole and into the inner pipe. A method of installing strainer pipes for chemical liquid injection, which is characterized by drilling a hole while discharging drilling water from the tip of the pipe and installing it to a required depth. 3) The inner tube with the swivel attached to the head can be freely slid into the inner tube passage hole provided in the center of the cap-shaped swivel attached to the head of the strainer tube to the vicinity of the strainer tube and its internal tip. A strainer tube characterized by being inserted in a sealed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2191325A JPH089862B2 (en) | 1990-07-19 | 1990-07-19 | Chemical injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2191325A JPH089862B2 (en) | 1990-07-19 | 1990-07-19 | Chemical injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476110A true JPH0476110A (en) | 1992-03-10 |
| JPH089862B2 JPH089862B2 (en) | 1996-01-31 |
Family
ID=16272680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2191325A Expired - Lifetime JPH089862B2 (en) | 1990-07-19 | 1990-07-19 | Chemical injection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089862B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011032831A (en) * | 2009-08-05 | 2011-02-17 | Toa Harbor Works Co Ltd | Method of injecting ground improving chemical |
| JP4979829B1 (en) * | 2011-10-25 | 2012-07-18 | 強化土株式会社 | Ground injection method and ground injection device |
| JP2012167497A (en) * | 2011-02-15 | 2012-09-06 | Okumura Corp | Chemical injection device |
| JP2014125781A (en) * | 2012-12-26 | 2014-07-07 | Ohbayashi Corp | Method for burying outer pipe for chemical injection, and chemical injection method using buried outer pipe |
| WO2016194265A1 (en) * | 2015-05-29 | 2016-12-08 | 大地 山下 | Method for removing earth-retaining members |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54112314U (en) * | 1978-01-27 | 1979-08-07 |
-
1990
- 1990-07-19 JP JP2191325A patent/JPH089862B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54112314U (en) * | 1978-01-27 | 1979-08-07 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011032831A (en) * | 2009-08-05 | 2011-02-17 | Toa Harbor Works Co Ltd | Method of injecting ground improving chemical |
| JP2012167497A (en) * | 2011-02-15 | 2012-09-06 | Okumura Corp | Chemical injection device |
| JP4979829B1 (en) * | 2011-10-25 | 2012-07-18 | 強化土株式会社 | Ground injection method and ground injection device |
| JP2014125781A (en) * | 2012-12-26 | 2014-07-07 | Ohbayashi Corp | Method for burying outer pipe for chemical injection, and chemical injection method using buried outer pipe |
| WO2016194265A1 (en) * | 2015-05-29 | 2016-12-08 | 大地 山下 | Method for removing earth-retaining members |
| JP2016223148A (en) * | 2015-05-29 | 2016-12-28 | 大地 山下 | Method for removing earth retaining member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089862B2 (en) | 1996-01-31 |
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