JP5047018B2

JP5047018B2 - Packer device and double pipe device using packer device

Info

Publication number: JP5047018B2
Application number: JP2008070857A
Authority: JP
Inventors: 則雄渡辺; 順也村上
Original assignee: Kumagai Gumi Co Ltd
Current assignee: Kumagai Gumi Co Ltd
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2012-10-10
Anticipated expiration: 2028-03-19
Also published as: JP2009228207A

Description

本発明は、簡単な構成のパッカー装置に関する。 The present invention relates to a packer device having a simple configuration.

注入管と、注入管の外周面を囲むように設けられたパッカーと、パッカー内に流体を給排するための流体給排管とを備えたパッカー装置が知られている（例えば、特許文献１等参照）。
特開２００３−１６６２３４号公報 There is known a packer device including an injection pipe, a packer provided so as to surround the outer peripheral surface of the injection pipe, and a fluid supply / discharge pipe for supplying and discharging fluid in the packer (for example, Patent Document 1). Etc.).
JP 2003-166234 A

しかしながら、上述のパッカー装置によれば、注入管の外に流体給排管を設けるため、地山に形成された坑（孔）の内壁と注入管との間に隙間を形成してその隙間に流体給排管を挿入しなくてはならない。この流体給排管の挿入作業を容易にするため、地山に形成された坑の内壁と注入管との間の隙間を大きくすれば、パッカーと坑の内壁との間に隙間が生じ易くなり、注入対象物を目的の場所に正確に注入できない場合がある。また、地山に形成された坑の内壁と注入管との間の隙間に流体給排管を挿入したり、流体給排管を隙間から取り出したりする作業、流体給排管の取り回し等の繁雑な作業が必要となる。これらの作業は、パッカーの数が多くなるほど大変になるといった問題点があった。
本発明は上記問題点に鑑みてなされたもので、坑の内壁と注入管のような管との間の隙間に流体給排管のような管を設置する必要のない簡単な構成のパッカー装置を提供することを目的する。 However, according to the packer device described above, since the fluid supply / discharge pipe is provided outside the injection pipe, a gap is formed between the inner wall of the well (hole) formed in the natural ground and the injection pipe, and the gap is formed in the gap. A fluid supply / drain pipe must be inserted. In order to facilitate the operation of inserting the fluid supply / discharge pipe, if the gap between the inner wall of the mine formed in the ground and the injection pipe is increased, a gap is likely to be formed between the packer and the inner wall of the mine. In some cases, the injection target cannot be accurately injected into the target location. Also, it is complicated to insert the fluid supply / discharge pipe into the gap between the inner wall of the pit and the injection pipe formed in the natural ground, remove the fluid supply / discharge pipe from the gap, and handle the fluid supply / discharge pipe. Work is required. There is a problem that these operations become more difficult as the number of packers increases.
The present invention has been made in view of the above problems, and has a simple configuration in which it is not necessary to install a pipe such as a fluid supply / discharge pipe in a gap between an inner wall of a pit and a pipe such as an injection pipe. The purpose is to provide.

本発明に係るパッカー装置は、管と、管の外周面を囲むように設けられた伸縮可能な筒体の両端が管の外周面に密着状態に取り付けられて管の外周面との間に密封された流体収容空間を形成したパッカーと、管の内周面と外周面とに貫通して流体収容空間と管の内部とを繋ぐ孔と、管の外周面に設けられて孔を塞ぐとともに管の内部及び孔を経由した流体の圧力を受けて管の内部と流体収容空間とを繋ぐ流体流路を形成する逆止弁と、流体収容空間内に設けられた吸水膨張材と、パッカーを形成する筒体の両端が取り付けられた位置よりも管の端部側に設けられて管の外周面を取り囲むように管の外周面に取り付けられた嵌合筒体とを備え、管の外周面から嵌合筒体の外周面までの長さである嵌合筒体の突出長さが、管の外周面より突出する萎んだ状態のパッカーの突出長さよりも長いことを特徴とする。
流体収容空間内に管の外周を囲む筒状体を備え、筒状体が吸水膨張材により形成されたことも特徴とする。
流体収容空間内に管の外周を囲む筒状体を備え、筒状体に吸水膨張材を付着させたことも特徴とする。
本発明に係る二重管装置は、内周面と外周面とに貫通する孔を複数備えた有孔外管と、有孔外管の両端に設けられた上記パッカー装置と、内周面と外周面とに貫通する孔を複数備えた有孔部が有孔外管の内側に位置するように設置された内管と、内管の筒中央に設けられた有孔部を挟んだ内管の一端と他端とにそれぞれ設けられた内側パッカーとを備えたことを特徴とする。 The packer device according to the present invention is sealed between the tube and the outer peripheral surface of the tube by attaching both ends of the extendable cylinder provided so as to surround the outer peripheral surface of the tube in close contact with the outer peripheral surface of the tube. The formed fluid storage space, a hole that penetrates the inner peripheral surface and the outer peripheral surface of the tube and connects the fluid storage space and the inside of the tube, and is provided on the outer peripheral surface of the tube to close and close the hole A check valve that forms a fluid flow path that connects the inside of the pipe and the fluid storage space under the pressure of the fluid passing through the inside of the tube and the hole, a water-absorbing expansion material provided in the fluid storage space, and a packer are formed And a fitting cylinder provided on the outer peripheral surface of the tube so as to surround the outer peripheral surface of the tube, and provided from the outer peripheral surface of the tube. The protruding length of the fitting cylinder that is the length to the outer circumference of the fitting cylinder projects from the outer circumference of the pipe. And wherein the longer than the projection length of the packer state I.
A cylindrical body surrounding the outer periphery of the pipe is provided in the fluid storage space, and the cylindrical body is formed of a water-absorbing and expanding material.
A cylindrical body surrounding the outer periphery of the pipe is provided in the fluid storage space, and a water-absorbing expansion material is attached to the cylindrical body .
A double pipe device according to the present invention includes a perforated outer tube having a plurality of holes penetrating an inner peripheral surface and an outer peripheral surface, the packer device provided at both ends of the perforated outer tube, and an inner peripheral surface. An inner tube installed so that a perforated portion having a plurality of holes penetrating the outer peripheral surface is located inside the perforated outer tube, and an inner tube sandwiching the perforated portion provided in the center of the inner tube And an inner packer provided at each of one end and the other end.

本発明のパッカー装置によれば、管をパッカーに対する流体供給路及び地山への注入対象物供給路として使用できるため、坑の内壁と管との間の隙間に流体給排管のような管を設置する必要のない簡単な構成のパッカー装置を実現できるとともに、流体収容空間内に吸水膨張材を備えたことで、パッカーの流体収容空間内に流入した水が吸水膨張材に吸収されるので、流体収容空間外への水漏れが少なくなり、吸水膨張材が膨張してパッカーが膨らんだ形状を長期的に保持できる形状保持効果の高いパッカー装置が得られ、さらに、管に外周面を取り囲むように管の外周面に取り付けられた嵌合筒体が、パッカーを形成する筒体の両端が取り付けられた位置よりも管の端部側に設けられ、管の外周面から嵌合筒体の外周面までの長さである嵌合筒体の突出長さを、管の外周面より突出する萎んだ状態のパッカーの突出長さよりも長くしたので、坑に対してパッカー装置を出し入れする際に、嵌合筒体がパッカー保護体として機能して、坑の内壁とパッカーとの接触を少なくでき、パッカーの損傷を少なくできる。
流体収容空間内に管の外周を囲む筒状体を備え、筒状体が吸水膨張材により形成されたり、筒状体に吸水膨張材を付着させたことにより、流体収容空間内の管の周囲に吸水膨張材がバランス良く配置された構成とでき、坑の内壁との間に隙間の生じにくいパッカーが得られる。
本発明の二重管装置によれば、坑内の任意の位置に集中的に注入対象物を注入できるようになる。 According to the packer device of the present invention, since the pipe can be used as a fluid supply path for the packer and an injection target supply path to the ground, a pipe such as a fluid supply / discharge pipe is provided in the gap between the inner wall of the mine and the pipe. it is possible to realize the unnecessary simple configuration of packer apparatus for installing the, by providing the hygroscopic expansion member into the fluid-containing space, the water flowing into the fluid receiving space of the packer is absorbed by the hygroscopic expansion material , A packer device having a high shape retention effect that can retain the shape in which the water-swelling expansion material expands and the packer swells for a long period of time is obtained . Further, the tube surrounds the outer peripheral surface. Thus, the fitting cylinder attached to the outer peripheral surface of the tube is provided closer to the end of the tube than the positions where both ends of the cylinder forming the packer are attached. Fitting that is the length to the outer peripheral surface Since the protruding length of the cylinder is longer than the protruding length of the packer in a deflated state protruding from the outer peripheral surface of the pipe, when the packer device is taken in and out of the pit, the fitting cylinder is used as a packer protective body. Functioning, the contact between the inner wall of the mine and the packer can be reduced, and the damage to the packer can be reduced.
A cylindrical body surrounding the outer periphery of the pipe is provided in the fluid storage space, and the cylindrical body is formed of a water absorbing / expanding material, or the water absorbing / expanding material is attached to the cylindrical body, thereby surrounding the pipe in the fluid storing space. Therefore, a packer can be obtained in which the water-absorbing expansion material is arranged in a well-balanced manner, and a gap is hardly formed between the inner wall of the mine .
According to the double pipe device of the present invention, it becomes possible to inject the injection target intensively at an arbitrary position in the pit.

最良の形態１
図１乃至図３は本発明の最良の形態１を示し、図１はパッカー装置を管の中心軸に沿って切断した断面を示し、図２はパッカー装置の使用方法を示し、図３は逆止弁を管の外周面側から見た平面図である。 Best form 1
1 to 3 show the best mode 1 of the present invention, FIG. 1 shows a cross-section of the packer device cut along the central axis of the tube, FIG. 2 shows how to use the packer device, and FIG. It is the top view which looked at the stop valve from the outer peripheral surface side of the pipe | tube.

図１を参照し、パッカー装置の構成を説明する。
パッカー装置１は、管２、パッカー３、孔４、逆止弁５を備える。
管２は、可撓性材料としての例えばポリエチレンにより形成された管である。
パッカー３は、管２の外周面６を囲むように設けられた筒体７の両方の端部（両端）８；８が管２の外周面６に取り付けられたことによって、筒体７と管２の外周面６との間に流体収容空間９が形成された構成である。パッカーを形成する筒体７は、ゴムのような伸縮可能な材料により形成された内筒体１１と、内筒体を保護するために不織布などにより形成された外筒体１２とを備えた二重筒構造体からなる。 The configuration of the packer device will be described with reference to FIG.
The packer device 1 includes a tube 2, a packer 3, a hole 4, and a check valve 5.
The tube 2 is a tube formed of, for example, polyethylene as a flexible material.
The packer 3 is formed by attaching both ends (both ends) 8; 8 of the cylindrical body 7 provided so as to surround the outer peripheral surface 6 of the pipe 2 to the outer peripheral surface 6 of the pipe 2. The fluid containing space 9 is formed between the two outer peripheral surfaces 6. The cylinder 7 forming the packer includes an inner cylinder 11 formed of a stretchable material such as rubber, and an outer cylinder 12 formed of a nonwoven fabric or the like for protecting the inner cylinder. It consists of a heavy cylinder structure.

管２の外周面６において、管２の中心軸２Ｃに沿った方向に所定間隔隔てた２箇所に、自己融着性絶縁テープ１５が管２の外周面６に巻き付くように管２の外周面６に貼り付けられる。この管２の外周面６に貼り付けられた自己融着性絶縁テープ１５の表面と内筒体１１の両端部の内面とが密着状態となるように、内筒体１１の端部が、当該端部の外周面に巻き付けられたリングバンド１６によって自己融着性絶縁テープ１５の表面に押し付けられる。外筒体１２の端部がリングバンド１６を覆い、外筒体１２の端部におけるリングバンド１６の両側に位置する部分と自己融着性絶縁テープ１５の表面とが密着状態となるように、外筒体１２の端部が、端部の外周面に巻き付けられた結束バンド１７；１７によって自己融着性絶縁テープ１５の表面に押し付けられる。このように自己融着性絶縁テープ１５、リングバンド１６及び結束バンド１７；１７によって、筒体７の両方の端部８；８が管２の外周面６に取り付けられて形成されたパッカー３は、流体収容空間９の密封性が確保され、流体収容空間９内に流入される流体によって膨らんで地山２０に形成された坑２１の内壁２２（図２参照）と密に接触するものである。 In the outer peripheral surface 6 of the tube 2, the outer periphery of the tube 2 is wound so that the self-bonding insulating tape 15 is wound around the outer peripheral surface 6 of the tube 2 at two positions spaced apart in the direction along the central axis 2C of the tube 2. Affixed to surface 6. The end of the inner cylinder 11 is in contact with the surface of the self-bonding insulating tape 15 affixed to the outer peripheral surface 6 of the tube 2 and the inner surfaces of both ends of the inner cylinder 11. The ring band 16 wound around the outer peripheral surface of the end is pressed against the surface of the self-bonding insulating tape 15. The end of the outer cylinder 12 covers the ring band 16, and the portions located on both sides of the ring band 16 at the end of the outer cylinder 12 and the surface of the self-bonding insulating tape 15 are in close contact with each other. The end of the outer cylinder 12 is pressed against the surface of the self-bonding insulating tape 15 by the binding bands 17; 17 wound around the outer peripheral surface of the end. Thus, the packer 3 formed by attaching both ends 8; 8 of the cylindrical body 7 to the outer peripheral surface 6 of the tube 2 by the self-bonding insulating tape 15, the ring band 16 and the binding band 17; In addition, the sealing property of the fluid storage space 9 is ensured, and the fluid storage space 9 is inflated by the fluid flowing into the fluid storage space 9 and is in close contact with the inner wall 22 (see FIG. 2) of the pit 21 formed in the ground 20 .

孔４は、管２の内周面２５と外周面６とに貫通して流体収容空間９と管２の内部２６とを繋ぐ。
逆止弁５は、管２の外周面６に設けられて孔４を塞ぐとともに管２の内部２６及び孔４を経由する流体の圧力を受けて管２の内部２６と流体収容空間９とを繋ぐ流体流路２７（図２（ｂ）参照）を形成する。
図３に示すように、逆止弁５は、例えば、孔４を塞ぐように管２の外周面６に設けられた矩形ゴム板３１と、矩形ゴム板３１が規定の位置から位置ずれしないように矩形ゴム板３１の両方の端部３２；３２を管２の外周面６に押し付けて管２の外周面６に固定する固定バンド３３；３３とにより形成される。矩形ゴム板３１における管２の外周面６と接触する一方の面３４（図１参照）には、孔４を塞いだ状態で孔４内に嵌り込む突起３５が形成され、この突起３５が孔４内に嵌り込んだ状態となることで流体収容空間９が密閉状態に維持される。 The hole 4 penetrates the inner peripheral surface 25 and the outer peripheral surface 6 of the tube 2 and connects the fluid containing space 9 and the interior 26 of the tube 2.
The check valve 5 is provided on the outer peripheral surface 6 of the pipe 2 so as to close the hole 4 and receives the pressure of the fluid passing through the inside 26 of the pipe 2 and the hole 4 to connect the inside 26 of the pipe 2 and the fluid storage space 9. A fluid flow path 27 to be connected (see FIG. 2B) is formed.
As shown in FIG. 3, the check valve 5 is configured such that, for example, the rectangular rubber plate 31 provided on the outer peripheral surface 6 of the pipe 2 so as to close the hole 4 and the rectangular rubber plate 31 are not displaced from a predetermined position. Further, both end portions 32; 32 of the rectangular rubber plate 31 are pressed against the outer peripheral surface 6 of the tube 2 to be fixed to the outer peripheral surface 6 of the tube 2. On one surface 34 (see FIG. 1) of the rectangular rubber plate 31 that is in contact with the outer peripheral surface 6 of the tube 2, a protrusion 35 that fits into the hole 4 in a state where the hole 4 is closed is formed. The fluid storage space 9 is maintained in a sealed state by being in a state of being fitted in the inside 4.

図１に示すように、流体収容空間９内には吸水膨張材としての吸水ポリマー４１が設けられる。つまり、吸水ポリマー４１の粒を所定量（例えば１２０ｇ）だけ予め流体収容空間９内に入れておくことによって、水が逆止弁５を経由して管２の内部２６から流体収容空間９内に流入した場合に、水が吸水ポリマー４１に吸収されるので、流体収容空間９外への水漏れが少なくなり、吸水ポリマー４１が膨張してパッカー３が膨らんだ形状を長期的に保持できる形状保持効果の高いパッカー装置１が得られる。 As shown in FIG. 1, a water absorbing polymer 41 as a water absorbing expansion material is provided in the fluid housing space 9. That is, by putting a predetermined amount (for example, 120 g) of water-absorbing polymer 41 in the fluid accommodation space 9 in advance, water enters the fluid accommodation space 9 from the inside 26 of the pipe 2 via the check valve 5. Since the water is absorbed by the water absorption polymer 41 when it flows in, the water leakage to the outside of the fluid storage space 9 is reduced, and the shape retention that allows the water absorption polymer 41 to expand and the packer 3 to expand can be maintained for a long time. A highly effective packer apparatus 1 is obtained.

管２の外周面６においてパッカー３を形成する筒体７の両方の端部８；８が取り付けられた位置よりも管２の端部２９；２９側に位置する部位には、例えば合成樹脂製の嵌合筒体４５が管２の外周面６を取り囲むように管２の外周面６に取り付けられる。図２（ａ）に示すように、管２の外周面６から嵌合筒体４５の外周面４６までの長さである嵌合筒体４５の突出長さａは、パッカー３が萎んでいる状態において管２の外周面６より突出するパッカー３の突出長さｂよりも長い。これにより、地山２０を掘削して形成した坑２１に対してパッカー装置１を出し入れする際に、嵌合筒体４５がパッカー保護体として機能して、坑２１の内壁２２とパッカー３との接触を少なくでき、パッカー３の損傷を少なくできる。また、嵌合筒体４５が管接続具として利用される場合には、嵌合筒体４５の一端部の内周面４７と管２の一端部の外周面６とが互いに溶着などの接着手法にて結合され、嵌合筒体４５の他端部の内側には、パッカー装置１に接続される供給管４８の一端側の外周面４９が嵌め込まれて、嵌合筒体４５の他端部の内周面４７と供給管４８の一端部の外周面４９とが互いに結合されることにより、パッカー装置１と供給管４８とが嵌合筒体４５により接続される。 In the outer peripheral surface 6 of the tube 2, the portion located on the end 29; 29 side of the tube 2 relative to the position where both ends 8; 8 of the cylinder 7 forming the packer 3 are attached is made of, for example, synthetic resin. The fitting cylinder 45 is attached to the outer peripheral surface 6 of the tube 2 so as to surround the outer peripheral surface 6 of the tube 2. As shown in FIG. 2A, the protrusion length a of the fitting cylinder 45, which is the length from the outer circumference 6 of the pipe 2 to the outer circumference 46 of the fitting cylinder 45, is deflated by the packer 3. It is longer than the protruding length b of the packer 3 protruding from the outer peripheral surface 6 of the tube 2 in the state. Thereby, when the packer apparatus 1 is taken in and out of the mine 21 formed by excavating the natural ground 20, the fitting cylinder 45 functions as a packer protection body, and the inner wall 22 of the mine 21 and the packer 3 are Contact can be reduced and damage to the packer 3 can be reduced. In addition, when the fitting cylinder 45 is used as a pipe connector, an inner peripheral surface 47 at one end of the fitting cylinder 45 and an outer peripheral face 6 at one end of the pipe 2 are bonded to each other. The outer peripheral surface 49 on one end side of the supply pipe 48 connected to the packer device 1 is fitted inside the other end portion of the fitting cylinder 45, and the other end portion of the fitting cylinder 45 is fitted. The inner peripheral surface 47 and the outer peripheral surface 49 at one end of the supply pipe 48 are coupled to each other, whereby the packer device 1 and the supply pipe 48 are connected by the fitting cylinder 45.

嵌合筒体４５と供給管４８との結合を強固にするためには、例えば、嵌合筒体４５の他端部の外周面４６に図外のねじ部を形成しておくとともに、供給管４８が貫通する径の孔を有して上記ねじ部に対応するねじ部を備えた図外の蓋を用意しておき、供給管４８の一端部を蓋の孔に貫通させて供給管４８の一端部の外周面４９と蓋の孔縁とを接着剤などで結合しておき、そして、蓋のねじ部を嵌合筒体４５の他端部の外周面４６に形成されたねじ部に螺着すればよい。 In order to strengthen the coupling between the fitting cylinder 45 and the supply pipe 48, for example, a thread portion (not shown) is formed on the outer peripheral surface 46 of the other end of the fitting cylinder 45, and the supply pipe is provided. A lid (not shown) having a hole having a diameter through which 48 penetrates and having a threaded portion corresponding to the above threaded portion is prepared. The outer peripheral surface 49 of one end and the hole edge of the lid are bonded with an adhesive or the like, and the screw portion of the lid is screwed to the screw portion formed on the outer peripheral surface 46 of the other end of the fitting cylinder 45. Just wear it.

次に図２を参照し、パッカー装置１の使用方法を説明する。例えば、坑２１の底２３側から地山２０に、地山補強のための薬液を注入したり、油汚染浄化のための微生物を注入する場合、例えば、パッカー装置１の管接続具として機能する一方の嵌合筒体４５に供給管４８の一端を接続して、供給管４８の図外の他端を図外の流体供給源に接続する。また、パッカー装置１の先端１ｔに位置する他方の嵌合筒体４５の一端開口４５ａ又は管２の一端開口２ａを蓋３９などで閉塞しておく。そして、図２（ａ）のように、パッカー装置１を坑２１の底２３側まで挿入し、流体供給源から供給管４８経由で管２内に水を供給する。これにより、図２（ｂ）のように、管２内に供給された水の圧力（流体圧）によって逆止弁５が押されて逆止弁５と管２の外周面６との間に流体流路２７となる隙間が生じ、この流体流路２７を経由した水が流体収容空間９内に流入する。図２（ｃ）のように、流体収容空間９内に流入した水が吸水ポリマー４１に吸水されることによって吸水ポリマー４１が膨張し、パッカー３が膨らんで、パッカー３の外表面３６と坑２１の内壁２２とが密に接触することにより、パッカー３と坑２１の底２３との間に密閉された閉塞坑内空間４０が形成される。その後、図外の棒などで蓋３９を突いたりして蓋３９を外し、供給管４８及び管２経由で供給される微生物や薬液等の注入対象物を他方の嵌合筒体４５の一端開口４５ａ又は管２の一端開口２ａを介して閉塞坑内空間４０内に注入することによって、注入対象物が閉塞坑内空間４０に接する坑２１の内壁２２から地山２０に注入されることになる。供給管４８及び管２の内側に注入対象物を供給するための図外の注入管を挿入して、注入管の先端で蓋３９を突いたりして蓋３９を外した後に当該注入管の先端開口を介して閉塞坑内空間４０に注入対象物を注入してもよい。
注入対象物の注入終了後、供給管４８を他方の嵌合筒体４５から取り外してパッカー装置１を坑２１内に残してもよいし、パッカー装置１を坑２１より引き出して回収してもよい。尚、パッカー装置１を坑２１より引き出して回収する場合、パッカー３の内筒体１１がゴムのような伸縮可能な材料により形成されているので、パッカー装置１を強制的に坑口まで引っ張って坑２１より引き出すことが可能である。 Next, the usage method of the packer apparatus 1 is demonstrated with reference to FIG. For example, when injecting a chemical solution for reinforcing natural ground or injecting microorganisms for oil pollution purification from the bottom 23 side of the pit 21 to the natural ground 20, it functions as a pipe connector of the packer device 1, for example. One end of the supply pipe 48 is connected to one fitting cylinder 45, and the other end of the supply pipe 48 outside the figure is connected to a fluid supply source outside the figure. Further, the one end opening 45a of the other fitting cylinder 45 or the one end opening 2a of the tube 2 located at the tip 1t of the packer device 1 is closed with a lid 39 or the like. Then, as shown in FIG. 2A, the packer device 1 is inserted to the bottom 23 side of the pit 21, and water is supplied into the pipe 2 from the fluid supply source via the supply pipe 48. As a result, as shown in FIG. 2B, the check valve 5 is pushed by the pressure (fluid pressure) of the water supplied into the pipe 2, so that the gap between the check valve 5 and the outer peripheral surface 6 of the pipe 2 is increased. A gap serving as the fluid flow path 27 is generated, and water passing through the fluid flow path 27 flows into the fluid accommodation space 9. As shown in FIG. 2 (c), when the water flowing into the fluid storage space 9 is absorbed by the water absorption polymer 41, the water absorption polymer 41 expands, the packer 3 expands, and the outer surface 36 of the packer 3 and the well 21. The closed inner space 40 is formed between the packer 3 and the bottom 23 of the mine 21 by being in close contact with the inner wall 22. Thereafter, the lid 39 is removed by sticking the lid 39 with a rod or the like not shown in the figure, and an injection target such as microorganisms or chemicals supplied via the supply pipe 48 and the pipe 2 is opened at one end of the other fitting cylinder 45. By injecting into the closed mine space 40 through 45a or the one end opening 2a of the pipe 2, the injection target is injected into the natural ground 20 from the inner wall 22 of the mine 21 in contact with the closed mine space 40. After inserting the supply pipe 48 and an injection pipe (not shown) for supplying the injection target inside the pipe 2 and protruding the lid 39 at the tip of the injection pipe or removing the lid 39, the tip of the injection pipe You may inject | pour an injection | pouring object into the obstruction | occlusion underground space 40 through opening.
After the injection of the injection target is completed, the supply pipe 48 may be removed from the other fitting cylinder 45 and the packer device 1 may be left in the well 21 or the packer device 1 may be pulled out from the well 21 and recovered. . When the packer device 1 is withdrawn from the well 21 and collected, the inner cylinder 11 of the packer 3 is formed of a stretchable material such as rubber. Therefore, the packer device 1 is forcibly pulled to the wellhead. 21 can be pulled out.

最良の形態１によれば、管２をパッカー３に対する流体供給路及び地山への注入対象物供給路として使用できるため、坑２１の内壁２２と管２との間の隙間に流体給排管のような管を設置する必要のない簡単な構成のパッカー装置１を得ることができる。 According to the best mode 1, since the pipe 2 can be used as a fluid supply path for the packer 3 and an injection target supply path to the ground, a fluid supply / discharge pipe is provided in the gap between the inner wall 22 of the pit 21 and the pipe 2. Thus, it is possible to obtain a packer device 1 having a simple configuration that does not require installation of a pipe.

最良の形態２
図４、図５（ａ）に示すように、流体収容空間９内に管２の外周を囲む筒状体５１を設け、この筒状体５１が吸水ポリマー４１により形成された構成とした。 Best form 2
As shown in FIGS. 4 and 5A, a cylindrical body 51 surrounding the outer periphery of the pipe 2 is provided in the fluid housing space 9, and the cylindrical body 51 is formed of a water absorbing polymer 41.

最良の形態３
図５（ｂ）に示すように、流体収容空間９内に管２の外周を囲む筒状体５２を設けるとともに、この筒状体５２に吸水ポリマー４１を付着させた構成とした。この筒状体５２は、例えば、不織布や水溶性の紙などにより形成される。 Best form 3
As shown in FIG. 5B, a cylindrical body 52 that surrounds the outer periphery of the pipe 2 is provided in the fluid housing space 9, and the water absorbing polymer 41 is attached to the cylindrical body 52. The cylindrical body 52 is formed of, for example, a nonwoven fabric or water-soluble paper.

最良の形態２；３によれば、流体収容空間９内の管２の周囲に吸水ポリマー４１がバランス良く配置された構成となるので、流体収容空間９の下部に吸水ポリマー４１が集中してしまうようなことを防止でき、パッカー３を径方向にバランスよく膨らませることができるようになる。つまり、パッカー３が偏って膨らむのを防止できて、坑２１の内壁２２との間に隙間の生じにくいパッカー３を提供できる。 According to the best mode 2; 3, since the water-absorbing polymer 41 is arranged in a balanced manner around the pipe 2 in the fluid housing space 9, the water-absorbing polymer 41 is concentrated in the lower part of the fluid housing space 9. This can be prevented, and the packer 3 can be inflated in a balanced manner in the radial direction. That is, it is possible to prevent the packer 3 from being unevenly swollen and to provide the packer 3 in which a gap is not easily formed between the inner wall 22 of the pit 21.

最良の形態４
図６を参照し、坑２１内の任意の位置に集中的に注入対象物を注入するための二重管装置６０の構成を説明する。
二重管装置６０は、有孔外管６１と、上記パッカー装置１と、有孔部６２を備えた内管６３と、内側パッカー６４とを備える。
有孔外管６１は、内周面６６と外周面６７とに貫通する孔６８を複数備えた構成である。有孔外管６１の両方の端部６９；６９には、上記パッカー装置１の管２が延長するように接続される。つまり、管接続具としての嵌合筒体４５により有孔外管６１の端部６９と管２の端部２９とが結合される。内管６３は、有孔外管６１の内側に位置するように設置される。内管６３の中心軸に沿った方向の一端７１は閉塞され、内管６３の中心軸に沿った方向の他端７２と注入対象物供給管７３とが接続される。有孔部６２は、内管６３の内周面と外周面とに貫通する複数の孔７５により形成され、内管６３の筒中央に設けられる。内側パッカー６４は、内管６３の筒中央に設けられた有孔部６２を挟んだ内管の一端７１側と他端７２側とにそれぞれ設けられる。図外の流体給排装置に一端が接続された図外の流体給排管の他端が内側パッカー６４に接続され、特許文献１に開示されたような給排機構によって内側パッカー６４内に対する流体の給排が行われる。 Best form 4
With reference to FIG. 6, the structure of the double-pipe apparatus 60 for inject | pouring an injection | pouring target intensively to the arbitrary positions in the well 21 is demonstrated.
The double tube device 60 includes a perforated outer tube 61, the packer device 1, an inner tube 63 including a perforated portion 62, and an inner packer 64.
The perforated outer tube 61 is configured to include a plurality of holes 68 penetrating the inner peripheral surface 66 and the outer peripheral surface 67. The pipe 2 of the packer device 1 is connected to both ends 69; 69 of the perforated outer pipe 61 so as to extend. That is, the end portion 69 of the perforated outer tube 61 and the end portion 29 of the tube 2 are joined by the fitting cylinder 45 as a tube connector. The inner tube 63 is installed so as to be located inside the perforated outer tube 61. One end 71 in the direction along the central axis of the inner pipe 63 is closed, and the other end 72 in the direction along the central axis of the inner pipe 63 is connected to the injection target supply pipe 73. The perforated portion 62 is formed by a plurality of holes 75 penetrating the inner peripheral surface and the outer peripheral surface of the inner tube 63, and is provided at the center of the tube of the inner tube 63. The inner packer 64 is provided on each of the one end 71 side and the other end 72 side of the inner tube sandwiching the perforated portion 62 provided in the center of the inner tube 63. The other end of the fluid supply / discharge pipe (not shown) connected to the fluid supply / discharge device (not shown) is connected to the inner packer 64, and the fluid flowing into the inner packer 64 is supplied by a supply / discharge mechanism as disclosed in Patent Document 1. Supply / discharge is performed.

図７を参照し、二重管装置６０の使用方法を説明する。図７（ａ）のように、互いに繋がれた有孔外管６１と２つのパッカー装置１；１とを備えた二重管装置６０の外側構成部を流体供給管７８の先端に取り付けて二重管装置６０を坑２１内の目的位置まで挿入する。内管６３を流体供給管７８、有孔外管６１内を通して一方のパッカー装置１の管２の内側まで挿入し、孔４を挟んで孔４の両側に内管６３の先端に位置する一方の内側パッカー６４と他方の内側パッカー６４とが位置されるように内側パッカー６４の位置を位置決めした後、図外の流体給排装置から両方の内側パッカー６４の内側に流体を供給する。これにより、内管６３の有孔部６２の両側の管２の内周面２５と内側パッカー６４とが接触し、孔４の近傍付近の管２の内部空間が両方の内側パッカー６４により閉塞された密閉空間８１が形成される。よって、流体供給源からの水が内管６３、有孔部６２、密閉空間８１、孔４を経由し、水の圧力によって一方のパッカー装置１の逆止弁５が押されて逆止弁５と管２の外周面６７との間に流体流路２７となる隙間が生じ（図２（ｂ）参照）、この流体流路２７を経由した水が逆止弁５を経由して流体収容空間９内に流入する。以上により、流体収容空間９に流入した水が吸水ポリマー４１に吸水されることによって吸水ポリマー４１が膨張し、パッカー３が膨らんで、パッカー３の外表面３６と坑２１の内壁２２とが密に接触する。
図７（ｂ）に示すように、他方のパッカー装置１のパッカー３も一方のパッカー装置１のパッカー３を膨らませた方法と同じ方法によって膨らませてパッカー３の外表面３６と坑２１の内壁２２とを密に接触させる。即ち、図７（ａ）の状態から内側パッカー６４内の流体を図外の流体給排装置によって排出して内側パッカー６４を萎ませて、図７（ｂ）のように、内側パッカー６４を他方のパッカー装置１の内側に移動した後に、一方のパッカー装置１のパッカー３を膨らませた方法と同じ方法で他方のパッカー装置１のパッカー３を膨らませる。
両方のパッカー装置１；１のパッカー３；３を膨らませることによって、両方のパッカー装置１のパッカー３と有孔外管６１と坑２１の内壁２２とで区画された閉塞坑内空間８０が形成される。この閉塞坑内空間８０に微生物や薬液などの注入対象物を供給するために、図７（ｃ）に示すように、有孔外管６１の内側に内管６３の有孔部６２を位置させ、内管６３の両側の内側パッカー６４；６４を膨らませて、有孔外管６１の内側と有孔外管６１の両側に繋がれた管２の内側との流通を遮断する。その後、注入対象物供給管７３を経由して内管６３内に微生物や薬液などの注入対象物が供給されることによって、注入対象物が、有孔部６２の孔７５及び有孔外管６１の孔６８を経由して閉塞坑内空間８０内に供給されて、注入対象物がこの閉塞坑内空間８０に接する坑２１の内壁２２から地山２０に注入される。
注入対象物の注入終了後、内側パッカー６４；６４を萎ませて内管６３を坑口まで引き上げる。また、流体供給管７８を他方の嵌合筒体４５から取り外して坑口まで引き上げることにより、パッカー装置１；１を坑２１内に残してもよいし、パッカー装置１；１を坑２１より引き出して回収してもよい。尚、パッカー装置１を坑２１より引き出して回収する場合、パッカー３の内筒体１１がゴムのような伸縮可能な材料により形成されているので、パッカー装置１；１を強制的に坑口まで引っ張って坑２１より引き出すことが可能である。 With reference to FIG. 7, the usage method of the double tube apparatus 60 is demonstrated. As shown in FIG. 7 (a), the outer constituent part of the double pipe device 60 including the perforated outer pipe 61 and the two packer devices 1; 1 connected to each other is attached to the tip of the fluid supply pipe 78. The heavy pipe device 60 is inserted to the target position in the pit 21. The inner pipe 63 is inserted through the fluid supply pipe 78 and the perforated outer pipe 61 to the inside of the pipe 2 of one packer device 1, and the one of the inner pipe 63 located at the tip of the inner pipe 63 on both sides of the hole 4 across the hole 4. After positioning the position of the inner packer 64 so that the inner packer 64 and the other inner packer 64 are positioned, fluid is supplied to the inside of both the inner packers 64 from a fluid supply / discharge device (not shown). As a result, the inner peripheral surface 25 of the pipe 2 on both sides of the perforated portion 62 of the inner pipe 63 and the inner packer 64 come into contact with each other, and the inner space of the pipe 2 near the hole 4 is closed by both inner packers 64. A sealed space 81 is formed. Therefore, the water from the fluid supply source passes through the inner tube 63, the perforated portion 62, the sealed space 81, and the hole 4, and the check valve 5 of one packer device 1 is pushed by the pressure of the water to check the check valve 5. A gap that becomes the fluid flow path 27 is formed between the pipe 2 and the outer peripheral surface 67 of the pipe 2 (see FIG. 2B), and the water that passes through the fluid flow path 27 passes through the check valve 5 and flows into the fluid accommodation space. 9 flows in. As described above, when the water flowing into the fluid storage space 9 is absorbed by the water absorption polymer 41, the water absorption polymer 41 expands, the packer 3 expands, and the outer surface 36 of the packer 3 and the inner wall 22 of the pit 21 become dense. Contact.
As shown in FIG. 7B, the packer 3 of the other packer device 1 is also inflated by the same method as the method of inflating the packer 3 of one packer device 1, and the outer surface 36 of the packer 3 and the inner wall 22 of the pit 21 In intimate contact. That is, the fluid in the inner packer 64 is discharged from the state shown in FIG. 7 (a) by a fluid supply / discharge device (not shown) and the inner packer 64 is deflated, and the inner packer 64 is moved to the other side as shown in FIG. 7 (b). After moving to the inside of the packer device 1, the packer 3 of the other packer device 1 is inflated in the same manner as the method of inflating the packer 3 of one packer device 1.
By inflating both packer devices 1; 1 packer 3; 3, a closed mine space 80 defined by the packer 3, the perforated outer tube 61 and the inner wall 22 of the mine 21 is formed. The In order to supply an injection target such as a microorganism or a chemical solution to the closed underground space 80, as shown in FIG. 7C, the perforated portion 62 of the inner tube 63 is positioned inside the perforated outer tube 61, The inner packers 64; 64 on both sides of the inner tube 63 are inflated to block the flow between the inside of the perforated outer tube 61 and the inside of the tube 2 connected to both sides of the perforated outer tube 61. Thereafter, an injection target such as a microorganism or a chemical solution is supplied into the inner pipe 63 via the injection target supply pipe 73, so that the injection target becomes the hole 75 of the perforated portion 62 and the perforated outer pipe 61. Then, the object to be injected is injected into the ground 20 from the inner wall 22 of the pit 21 in contact with the closed mine space 80.
After the injection of the injection target, the inner packer 64; 64 is deflated and the inner tube 63 is pulled up to the wellhead. Further, by removing the fluid supply pipe 78 from the other fitting cylinder 45 and pulling it up to the wellhead, the packer device 1; 1 may be left in the well 21, or the packer device 1; 1 is pulled out from the well 21. It may be recovered. When the packer apparatus 1 is pulled out and collected from the well 21, the inner cylinder 11 of the packer 3 is formed of a stretchable material such as rubber, so that the packer apparatus 1; 1 is forcibly pulled to the wellhead. It is possible to pull out from the pit 21.

最良の形態４の二重管装置６０を用いることによって、坑２１内の任意の位置に集中的に注入対象物を注入できるようになる。 By using the double pipe device 60 of the best mode 4, it becomes possible to inject the injection target intensively at an arbitrary position in the well 21.

パッカー３を形成する筒体７をゴムで形成された筒体のみで形成してもよい。流体収容空間９内に供給する流体としては、水の他に、セメントミルク、ＣＢセメント（セメントとベントナイトとを混合したもの）、空気などを用いることができる。 You may form the cylinder 7 which forms the packer 3 only with the cylinder formed with rubber. As the fluid supplied into the fluid storage space 9, cement milk, CB cement (a mixture of cement and bentonite), air, and the like can be used in addition to water.

パッカー装置の断面図（最良の形態１）。Sectional drawing (best form 1) of a packer apparatus. パッカー装置の使用方法を示す図（最良の形態１）。The figure which shows the usage method of a packer apparatus (best form 1). 逆止弁の平面図（最良の形態１）。The top view of a non-return valve (best form 1). パッカー装置の断面図（最良の形態２）。Sectional drawing of a packer apparatus (best form 2). （ａ）は図４のＡ−Ａ断面図（最良の形態２）、（ｂ）は図４のＡ−Ａ断面相当図（最良の形態３）。4A is a cross-sectional view taken along the line AA in FIG. 4 (best mode 2), and FIG. 5B is a cross-sectional view taken along the line AA in FIG. 4 (best mode 3). 二重管装置の断面図（最良の形態４）。Sectional drawing of a double tube apparatus (best form 4). 二重管装置の使用方法を示す図（最良の形態４）。The figure which shows the usage method of a double tube apparatus (best form 4).

Explanation of symbols

１パッカー装置、２管、３パッカー、４孔、５逆止弁、
６管の外周面、７筒体、８端部、９流体収容空間、２７流体流路、
４１吸水ポリマー、４５嵌合筒体、５１筒状体、６０二重管装置
６１有孔外管、６２有孔部、６３内管、６４内側パッカー
６８有孔外管の孔、７１内管の一端、７２内管の他端
７５有孔部の孔、ａ嵌合筒体の突出長さ、ｂパッカーの突出長さ。 1 packer device, 2 pipes, 3 packers, 4 holes, 5 check valves,
6 pipe outer periphery, 7 cylinder, 8 end, 9 fluid containing space, 27 fluid flow path,
41 water-absorbing polymer, 45 fitting cylinder, 51 cylindrical body, 60 double tube device 61 perforated outer tube, 62 perforated portion, 63 inner tube, 64 inner packer 68 hole of perforated outer tube, 71 inner tube One end, 72 The other end 75 of the inner tube 75 A hole in the perforated portion, a projecting length of the fitting cylinder, b projecting length of the packer.

Claims

Both ends of the tube and the extendable cylinder provided so as to surround the outer peripheral surface of the tube are attached in close contact with the outer peripheral surface of the tube to form a sealed fluid storage space between the outer peripheral surface of the tube Fluid that passes through the packer, the inner peripheral surface and the outer peripheral surface of the tube and connects the fluid storage space and the inside of the tube, and the fluid that is provided on the outer peripheral surface of the tube to close the hole and that passes through the inside and the hole of the tube Are attached to both ends of the check valve that forms a fluid flow path that connects the inside of the pipe and the fluid storage space under the pressure of the pipe, the water-absorbing expansion material provided in the fluid storage space, and the cylinder that forms the packer. From the outer peripheral surface of the tube to the outer peripheral surface of the fitting cylinder, and provided on the outer peripheral surface of the pipe so as to surround the outer peripheral surface of the pipe. The protruding length of the packer in a deflated state in which the protruding length of the fitting cylinder, which is the length of the tube, protrudes from the outer peripheral surface of the pipe Packer and wherein longer than.

The packer device according to claim 1, further comprising a cylindrical body surrounding the outer periphery of the pipe in the fluid storage space, wherein the cylindrical body is formed of a water-absorbing expansion material.

The packer apparatus according to claim 1, further comprising a cylindrical body surrounding the outer periphery of the pipe in the fluid storage space, and a water-absorbing expansion material attached to the cylindrical body .

The perforated outer tube provided with a plurality of holes penetrating the inner peripheral surface and the outer peripheral surface, the packer device according to any one of claims 1 to 3 provided at both ends of the perforated outer tube, The inner tube installed so that the perforated part with a plurality of holes penetrating the surface and the outer peripheral surface is located inside the perforated outer tube, and the perforated part provided in the center of the cylinder of the inner tube A double tube device comprising an inner packer provided at one end and the other end of an inner tube.