JPH0288898A - Packer - Google Patents
PackerInfo
- Publication number
- JPH0288898A JPH0288898A JP24038488A JP24038488A JPH0288898A JP H0288898 A JPH0288898 A JP H0288898A JP 24038488 A JP24038488 A JP 24038488A JP 24038488 A JP24038488 A JP 24038488A JP H0288898 A JPH0288898 A JP H0288898A
- Authority
- JP
- Japan
- Prior art keywords
- packer
- hole
- bag
- section
- tube
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract description 17
- 239000004677 Nylon Substances 0.000 abstract description 11
- 229920001778 nylon Polymers 0.000 abstract description 11
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 239000012466 permeate Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000000126 substance Substances 0.000 description 9
- 239000004744 fabric Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000007596 consolidation process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (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、軟弱あるいは破砕された岩盤等を岩盤固結
用薬液により堅固な岩盤に改善する岩盤固結に使用する
パッカーに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a packer used for rock consolidation, which improves soft or crushed rock, etc., into solid rock using a rock consolidation chemical.
従来から軟弱な岩盤（地山）または破砕された地山等の
地層帯では、トンネル切羽の天盤の崩落等の防止のため
に、トンネル切羽先端の天盤部に、天盤のアーチに沿っ
て孔を穿設し、この孔内にロックボルトを挿入もしくは
このボルトをモルタルで固結する先受ボルト工法、また
はパイプルーフ工法、薬液注入工法等の対応方法が講じ
られ、他山を強化することが行われている。しかしなが
ら、このような従来の対応方法では、設備が大損りとな
り、機械の設置や注入の準備に手間がかかり、またこれ
らの作業のために現場の作業をかなりの期間停止しなけ
ればならないという問題を生じていた。In order to prevent the top of the tunnel face from collapsing in geological zones such as soft rock (ground mass) or crushed ground, there has been a Countermeasure methods such as the advance bolt method, which involves drilling a hole and inserting a rock bolt into the hole or solidifying the bolt with mortar, the pipe roof method, and the chemical injection method, are used to strengthen other mountains. things are being done. However, this conventional method causes major damage to equipment, requires time and effort to install machines and prepare for injection, and requires the on-site work to be stopped for a considerable period of time. was occurring.
そこで、本発明者らは、このような問題を解決するため
、削岩機等の削岩装置を用い、トンネル切羽先端の天盤
部に天盤のアーチに沿って複数の孔を穿設し、この孔内
に、先端側に吐出孔を有する中空パイプからなるパッカ
ーを挿入し、そのパッカー内にウレタン樹脂液等の薬液
を圧入してパッカー先端側から外部に吐出し岩盤に浸透
させる技術をすでに提案している（特願昭５８−１４４
０−２４号）。この場合、上記薬液の孔からの洩れを防
ぐとともにパッカーを孔内に固定する目的で、パッカー
の根元側に布等を巻きつけ、これにウレタン樹脂液等を
含浸させ、パッカーの挿入時に上記布等に含浸させたウ
レタン樹脂を発泡させ、孔の壁面とパッカーの外周部と
の隙間を防ぐと同時にパッカーを孔壁に固定するという
ことが行われている。Therefore, in order to solve this problem, the present inventors used rock drilling equipment such as a rock drill to drill multiple holes along the arch of the ceiling at the tip of the tunnel face. In this hole, a packer consisting of a hollow pipe with a discharge hole at the tip is inserted, and a chemical solution such as urethane resin is pressurized into the packer and discharged from the tip of the packer to the outside and penetrated into the rock. It has already been proposed (patent application 1986-144)
No. 0-24). In this case, in order to prevent the chemical solution from leaking from the hole and to fix the packer in the hole, a cloth or the like is wrapped around the base of the packer, and this is impregnated with urethane resin liquid, etc., and when the packer is inserted, the cloth is A method of foaming a urethane resin impregnated with a hole, etc., to prevent a gap between the wall of the hole and the outer periphery of the packer, and at the same time to fix the packer to the wall of the hole.
しかしながら、上記パッカーを、湧水等のある軟弱な地
山で使用すると、パッカーの根元側の布等に含浸された
ウレタン樹脂が発泡してパッカー外周と孔の壁面との空
間を埋め、さらに岩盤に浸透し硬化してパッカーを孔壁
面に固定するまでに、湧水によってパッカーが孔から押
し流されてしまうという問題を生しる。また、湧水によ
って、穿設した孔が崩壊しかかった場合には、パッカー
の根元側に巻かれた布等が孔の縁に引つ掛かかつて、パ
ッカーを孔内に挿入しにくくなる。その結果、パッカー
の挿入に長時間を要し、その間に布等に含浸されたウレ
タン樹脂が硬化してしまうという問題がある。However, when the above packer is used in soft ground with spring water, etc., the urethane resin impregnated in the cloth at the base of the packer foams and fills the space between the outer periphery of the packer and the wall of the hole. This creates a problem in that the packer is washed away from the hole by the spring water before it penetrates and hardens to fix the packer to the hole wall. Furthermore, if the drilled hole begins to collapse due to spring water, the cloth wrapped around the base of the packer gets caught on the edge of the hole, making it difficult to insert the packer into the hole. As a result, it takes a long time to insert the packer, and the urethane resin impregnated into the cloth or the like hardens during that time.
この発明は、このような事情に鑑みなされたもので、湧
水等のある軟弱な地山でも使用でき、確実に効果を奏し
うるパッカーの提供をその目的とする。The present invention was made in view of the above circumstances, and an object thereof is to provide a packer that can be used even on soft ground with spring water, etc., and can be reliably effective.
〔問題点を解決するための手段］
上記の目的を達成するため、この発明のパッカーは、先
端側に吐出孔を有する中空パイプ状体の根元側外周面を
囲うように通液性シートを配設しその両端部を上記根元
側外周面に固定することにより通液性袋体に形成し、上
記袋体からその内部と連通ずる液圧入用チューブを延ば
したという構成をとる。[Means for Solving the Problems] In order to achieve the above object, the packer of the present invention includes a liquid permeable sheet arranged to surround the outer peripheral surface of the hollow pipe-like body on the root side having a discharge hole on the tip side. A liquid-permeable bag is formed by fixing both ends of the bag to the outer circumferential surface of the root side, and a liquid press-fitting tube that communicates with the inside of the bag is extended from the bag.
〔作用］
すなわち、このパッカーは、根元側周面に通液性袋体を
取付けるとともに、この通液性袋体に液圧入用チューブ
を連結している。したがって、このパッカーを、岩盤に
穿孔した孔内に挿入し、その状態で、上記液圧入用チュ
ーブを介して通液性袋体内に、ウレタン樹脂液等の岩盤
固結用薬液を注入すると、その注入圧力で通液性袋体が
瞬間的に膨脂し孔壁面に圧接すると同時に、その外周面
から岩盤に向かって上記岩盤固結用薬液が侵透し、そこ
で固結する。その結果、湧水等のある軟弱な他山でもパ
ッカーを確実に固定できるとともに、岩盤に穿孔した孔
の開口を完全に閉塞した状態で、孔の奥側に岩盤固結用
薬液を吐出できるようになる。また、上記パッカーを岩
盤の孔に挿入する際には、通液性袋体をしぼませた状態
にすることができろため、湧水によって、穿孔した孔が
崩壊しかかった場合でも、容易にパッカーを孔内に挿入
できるようになる。[Function] That is, in this packer, a liquid-permeable bag is attached to the peripheral surface of the root side, and a liquid-pressure injection tube is connected to the liquid-permeable bag. Therefore, when this packer is inserted into a hole drilled in rock, and in that state, a rock consolidation chemical solution such as urethane resin liquid is injected into the liquid-permeable bag through the liquid injection tube. The liquid-permeable bag instantaneously swells due to the injection pressure and comes into pressure contact with the hole wall surface, and at the same time, the rock solidification chemical solution penetrates from the outer peripheral surface toward the bedrock and solidifies there. As a result, the packer can be securely fixed even on soft mountains with spring water, etc., and the chemical solution for rock consolidation can be discharged to the back of the hole while completely blocking the opening of the hole drilled in the bedrock. become. In addition, when inserting the packer into a hole in the rock, the liquid-permeable bag can be deflated, so even if the hole is about to collapse due to spring water, it can be easily removed. The packer can now be inserted into the hole.
つぎりこ、この発明を実施例にもとづいて詳しく説明す
る。Next, this invention will be explained in detail based on examples.
（実施例〕 第１図は、この発明の一実施例を示している。(Example〕 FIG. 1 shows an embodiment of the invention.
すなわち、図において、１は後端が開口した中空パイプ
状のパフカー本体であり、外径２７皿、内径１４ ｍｍ
で全長が略２ｍに設定されている。このバンカー本体１
は、先端が尖っていて、先端側の周面に複数の吐出孔２
が所定間隔で穿設されている。そして、根元側（後端側
）には綿製のメリヤスからなる袋部３が外周に沿って巻
かれ、この袋部３の後端部から内部に連通ずるナイロン
チューブ４が延設されている。上記袋部３は、第２図に
示すように、二重構造になっており、筒状の布３ａ
３ｂを２枚重ね合わせてバッカー本体１の根元側に外嵌
し、それらの後端側を、ビニールテープ５とＣ■ハンド
６でパッカー本体１の外周面に固定したのち、全体を反
転させて前端側をパッカ本体１の後端側に移動させ、ナ
イロンチューブ４の先端部を収容した状態で筒状布３ａ
、３ｂの後端側（反転して後部；側になった部分）をビ
ニルテープ５とＣＶハンド６とでバッカー本体１の外周
面に固定することにより構成されている。上記ナイロン
チューブ４の固定は、バッカー本体１の外周面に長手方
向に沿ってナイロンチューブ４を沿わせ、その状態で、
ナイロンチューブ４の先端をビニールテープ５の巻回に
よりバッカー本体１に固定し、ナイロンチューブ４の後
端側をビニールテープ５とＣ■バンド６とでバッカー本
体１に固定することによりなされている。第１回におい
て、７はナイロンチューブ４の後端部に取り付けられた
連結用金具であり、異径ニップルとカプラーで構成され
ている。なお、上記袋部３は、全体の長さが５０ｃｍで
、先端内側の折り返し部分の長さが１０ｃｍに設定され
ている。また、上記パッカー本体１は、略中央部を境に
して前部側と後部側とに２分割されており、これらをね
し継手（図示せず）で継合して構成されている。そして
、上記前部側における継合部分の内周側に段部が設けら
れ、そこに第３図（ａ）、（ｂ）に示す静止ミキサー８
が先端側（図示の左側部分）をパッカー本体１の先端側
に向けた状態で挿入され根元側リング９を上記段部に係
合させて固定されている。That is, in the figure, 1 is a hollow pipe-shaped puff car body with an open rear end, and has an outer diameter of 27 plates and an inner diameter of 14 mm.
The total length is set to approximately 2m. This bunker body 1
has a pointed tip and multiple discharge holes 2 on the circumferential surface of the tip side.
are drilled at predetermined intervals. A bag part 3 made of cotton knitted material is wound along the outer periphery on the base side (rear end side), and a nylon tube 4 is extended from the rear end of this bag part 3 to communicate with the inside. . The bag portion 3 has a double structure as shown in FIG. 2, and has a cylindrical cloth 3a.
3b are overlapped and fitted onto the base side of the backer body 1, and their rear ends are fixed to the outer peripheral surface of the packer body 1 with vinyl tape 5 and C■ hand 6, and then the whole is turned over. The front end side is moved to the rear end side of the packer main body 1, and the cylindrical cloth 3a is moved with the tip of the nylon tube 4 accommodated.
, 3b (the rear end side when reversed) is fixed to the outer circumferential surface of the backer main body 1 with a vinyl tape 5 and a CV hand 6. The above-mentioned nylon tube 4 is fixed by placing the nylon tube 4 along the outer peripheral surface of the backer main body 1 in the longitudinal direction, and in that state,
The tip of the nylon tube 4 is fixed to the backer body 1 by winding a vinyl tape 5, and the rear end side of the nylon tube 4 is fixed to the backer body 1 with a vinyl tape 5 and a C-band 6. In the first time, 7 is a connecting metal fitting attached to the rear end of the nylon tube 4, and is composed of a different diameter nipple and a coupler. The bag portion 3 has an overall length of 50 cm, and the length of the folded portion inside the tip is set to 10 cm. The packer main body 1 is divided into two parts, a front side and a rear side, with a substantially central portion as a boundary, and these parts are joined by a screw joint (not shown). A stepped portion is provided on the inner peripheral side of the joint portion on the front side, and the static mixer 8 shown in FIGS. 3(a) and 3(b) is provided therein.
is inserted with its distal end (left side in the figure) facing toward the distal end of the packer main body 1, and the root ring 9 is engaged with and fixed to the stepped portion.
上記静止ミキサー８には、根元側リング部９の中心から
前方（矢印Ｘ方向）に延びる線状中心軸８ａを中心に、
左半分にＶ字状２重羽根８ｂが一定間隔で傾斜配設され
、右半分には１重羽根８ｃが一定間隔で傾斜配設され、
パッカー本体ｌ内に圧入されたウレタン樹脂のＡ液およ
びＢ液をそれぞれ左半分、右半分に受は入れ上記両液を
同方向（矢印Ａ、Ｂ方向）に旋回させながら移送するよ
うになっている。この場合、右半分には１重羽根８Ｃ１
左半分にはＶ字状２重羽根８ｂが設けられ、ウレタン樹
脂が右半分から左半分に旋回移行すると、入口側が広く
出口側が狭隘になっているＶ字状２重羽根８ｂの作用に
よって流速が速められ、左半分から右半分に戻ると初期
速度に戻る。すなわち、Ａ液、Ｂ液は左半分、右半分の
流速の差により、同方向に旋回しながらミキシングされ
るのであり、注入時の初期流速を維持したままミキシン
グされ前方に送られる。したがって、硬化の著しく速い
ウレタン樹脂を圧入する場合においてウレタン樹脂を途
中で硬化させることなくミキシング移送し先端から円滑
に吐出させうるようになっている。また、パッカー本体
１の後端には逆止弁付継手（図示せず）をら合するため
のねじ部が形成されている。The stationary mixer 8 has a linear central axis 8a extending forward (in the direction of the arrow X) from the center of the root side ring part 9.
On the left half, V-shaped double blades 8b are tiltedly arranged at regular intervals, and on the right half, single-layer blades 8c are tiltedly arranged at regular intervals,
Urethane resin liquids A and B, which are press-fitted into the packer body l, are received in the left and right halves, respectively, and both liquids are transferred while rotating in the same direction (arrows A and B directions). There is. In this case, the right half has a single blade 8C1
A V-shaped double blade 8b is provided on the left half, and when the urethane resin rotates and transfers from the right half to the left half, the flow velocity is increased by the action of the V-shaped double blade 8b, which has a wide inlet side and a narrow outlet side. It is sped up, and when it returns from the left half to the right half, it returns to its initial speed. That is, liquids A and B are mixed while rotating in the same direction due to the difference in flow velocity between the left half and the right half, and are mixed and sent forward while maintaining the initial flow velocity at the time of injection. Therefore, when press-fitting a urethane resin that hardens extremely quickly, the urethane resin can be mixed and transferred without being hardened midway, and can be smoothly discharged from the tip. Further, a threaded portion is formed at the rear end of the packer main body 1 for engaging a joint with a check valve (not shown).
この構成において、まず、削岩機等を用いて、トンネル
切羽先端の天盤部に上向き（角度θ＝１０〜２０°）の
状態で孔を穿設し、パッカー本体１の後端部およびナイ
ロンチューブ４の連結用金具７に、ウレタン樹脂圧入ポ
ンプのホース（図示せず）を連結する。ついで、第４図
に示すように、天盤部１０に設けた孔の中に、袋部３を
折り畳んでしぼませた状態のパッカーを挿入すると同時
に、ナイロンチューブ４から袋部３にウレタン樹脂を圧
入する。その結果、第５図に示すように、袋部３は瞬間
的に膨脂して、その表面が孔の壁面に圧接し、パッカー
本体ｌの外周部と孔の壁面との隙間を塞ぐ。それと略同
時に、袋部３の表面からウレタン樹脂が滲みでて天盤部
１０の鎖線Ｃの部分まで浸透し、そこで硬化する。これ
によってパッカー本体１は上記孔壁に固定され、湧水等
によって流出してなくなる。この際、袋部３が二重に構
成されているため、湧水等が勢いよく出ていても、すぐ
には内袋３ｂ内には到達せず、したがって、湧水による
上記袋部３の膨張阻害は回避される。このようにしてパ
ッカー本体１が固定され、かつパッカー本体１と孔壁と
の隙間も塞がれた段階で、パッカー本体１にウレタン樹
脂を圧入し、これを吐出孔２から孔内に吐出させ、孔の
奥側に対応する天盤部１０の鎖線りの部分に浸透させ、
硬化させる。このようにしてウレタン樹脂の固結領域を
、第６図に示すように天盤部１０の天井部に、または第
７図に示すように天盤部１０のアーチに沿って連続的に
形成することにより、パッカー本体の１を残置したまま
で天盤部１０の補強がなされる。第６図および第７図に
おいて、１１はパッカー本体１に対する薬液の接合ユニ
ット、１２はそのホース、１３は支保工、１４は固結領
域である。In this configuration, first, using a rock drill or the like, a hole is drilled in the ceiling section at the tip of the tunnel face in an upward direction (angle θ = 10 to 20 degrees), and the rear end of the packer body 1 and the nylon A hose (not shown) of a urethane resin press-in pump is connected to the connecting fitting 7 of the tube 4. Next, as shown in FIG. 4, the packer with the bag part 3 folded and deflated is inserted into the hole provided in the top plate part 10, and at the same time, urethane resin is applied from the nylon tube 4 to the bag part 3. Press fit. As a result, as shown in FIG. 5, the bag portion 3 instantaneously expands and its surface comes into pressure contact with the wall of the hole, closing the gap between the outer peripheral portion of the packer body 1 and the wall of the hole. At about the same time, the urethane resin oozes out from the surface of the bag portion 3, penetrates into the portion of the top plate portion 10 indicated by the chain line C, and hardens there. As a result, the packer main body 1 is fixed to the hole wall, and is washed away by spring water or the like. At this time, since the bag portion 3 is double-layered, even if spring water etc. comes out forcefully, it does not reach the inside of the inner bag 3b immediately, and therefore the bag portion 3 due to the spring water Swelling inhibition is avoided. When the packer body 1 is fixed in this manner and the gap between the packer body 1 and the hole wall is also closed, urethane resin is press-fitted into the packer body 1 and is discharged from the discharge hole 2 into the hole. , infiltrate the chain-lined part of the top plate part 10 corresponding to the back side of the hole,
Let it harden. In this way, a solidified region of the urethane resin is continuously formed on the ceiling of the top plate 10 as shown in FIG. 6 or along the arch of the top plate 10 as shown in FIG. As a result, the top plate portion 10 is reinforced while the packer main body 1 remains in place. In FIGS. 6 and 7, 11 is a unit for joining the chemical solution to the packer body 1, 12 is its hose, 13 is a support, and 14 is a consolidation area.
このように、この発明のパッカーは、袋部３をしぼませ
た状態で、孔内に挿入でき、挿入後、直ちに袋部３に速
硬性のウレタン樹脂を圧太し袋部３を膨らませ、かつ薬
液を浸透させるようにしている。したがって、パッカー
を孔内に容易に挿入できるとともに、湧水等のある他山
であっても、湧水に流されることなく、迅速にパッカー
本体１を孔内に固定でき、かつパッカー本体１と孔壁と
の隙間を塞ぐことができる。その結果、パッヵ一工法が
従来不可能とされていた湧水の多い軟弱地盤地帯に対し
ても使用可能となる。また、袋部３が二重になっている
ため、湧水による袋部３の腫脹阻害は回避される。As described above, the packer of the present invention can be inserted into the hole with the bag portion 3 deflated, and immediately after insertion, the bag portion 3 is compressed with fast-curing urethane resin to inflate the bag portion 3. This allows the chemical solution to penetrate. Therefore, the packer can be easily inserted into the hole, and even if there is a spring in another mountain, the packer body 1 can be quickly fixed in the hole without being washed away by the spring water. It can close the gap with the hole wall. As a result, it becomes possible to use the Pakka-ichi construction method even in areas with a lot of spring water and soft ground, which was previously considered impossible. Further, since the bag portion 3 is double-layered, swelling of the bag portion 3 due to spring water is prevented from being inhibited.
［発明の効果］
この発明のバッカーは、以上のように構成されているた
め、湧水の多い軟弱な地盤に対しても使用でき、適用範
囲が掻めて広くなる。[Effects of the Invention] Since the backer of the present invention is configured as described above, it can be used even on soft ground with a lot of spring water, and the range of application is greatly expanded.
第１図はこの発明の一実施例の正面図、第２図はその要
部断面図、第３図（ａ）は静止ミキサーの斜視図、第３
図（ｂ）はその側面図、第４図および第５図はバッカー
の使用説明図、第６図はその施工状態を示す縦断面図、
第７図はその横断面図である。
１・・・バッカー本体 ２・・・吐出孔 ３・・・袋部
４・・ナイロンチューブ
特許出願人 東海ゴム工業株式会社
代理人 弁理士 西 藤 征 彦
第
図（ａ）
ρ
第
図
（ｂ）
Ｃ″FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a sectional view of the main part thereof, FIG. 3(a) is a perspective view of a static mixer, and FIG.
Figure (b) is a side view, Figures 4 and 5 are illustrations for explaining the use of the backer, and Figure 6 is a longitudinal sectional view showing its construction state.
FIG. 7 is a cross-sectional view thereof. 1...Backer body 2...Discharge hole 3...Bag portion 4...Nylon tube Patent applicant Tokai Rubber Industries Co., Ltd. Representative Patent attorney Yukihiko Nishifuji Figure (a) ρ Figure (b) C''
Claims (1)
外周面を囲うように通液性シートを配設しその両端部を
上記根元側外周面に固定することにより通液性袋体に形
成し、上記袋体からその内部と連通する液圧入用チュー
ブを延ばしたことを特徴とするパッカー。(1) A liquid-permeable bag is created by disposing a liquid-permeable sheet so as to surround the outer peripheral surface of the root side of a hollow pipe-like body having a discharge hole on the tip side, and fixing both ends of the sheet to the outer peripheral surface of the root side. 1. A packer characterized in that the packer has a liquid press-fitting tube extending from the bag body and communicating with the inside of the bag body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63240384A JPH079159B2 (en) | 1988-09-26 | 1988-09-26 | Packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63240384A JPH079159B2 (en) | 1988-09-26 | 1988-09-26 | Packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0288898A true JPH0288898A (en) | 1990-03-29 |
| JPH079159B2 JPH079159B2 (en) | 1995-02-01 |
Family
ID=17058685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63240384A Expired - Fee Related JPH079159B2 (en) | 1988-09-26 | 1988-09-26 | Packer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079159B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6596537B1 (en) | 1994-12-16 | 2003-07-22 | Chugai Seiyaku Kabushiki Kaisha | Human interleukin-6 receptor expression inhibitor |
| JP2009191582A (en) * | 2008-02-18 | 2009-08-27 | Ohbayashi Corp | Reinforcing member used for ground reinforcement, method for ground reinforcement, and ground reinforcement structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145272B (en) * | 2019-06-13 | 2021-04-13 | 辽宁工程技术大学 | Gas extraction and coal seam water injection dual-purpose hole sealing device and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724718A (en) * | 1980-07-23 | 1982-02-09 | Raito Kogyo Kk | Improving method for soft ground |
| JPS60126422A (en) * | 1983-12-14 | 1985-07-05 | Toyo Bussan Kk | Injecting device for chemical liquid for construction |
| JPS625117U (en) * | 1985-06-27 | 1987-01-13 | ||
| JPS62288213A (en) * | 1986-06-05 | 1987-12-15 | Tokai Rubber Ind Ltd | Rockbed solidifying work |
-
1988
- 1988-09-26 JP JP63240384A patent/JPH079159B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724718A (en) * | 1980-07-23 | 1982-02-09 | Raito Kogyo Kk | Improving method for soft ground |
| JPS60126422A (en) * | 1983-12-14 | 1985-07-05 | Toyo Bussan Kk | Injecting device for chemical liquid for construction |
| JPS625117U (en) * | 1985-06-27 | 1987-01-13 | ||
| JPS62288213A (en) * | 1986-06-05 | 1987-12-15 | Tokai Rubber Ind Ltd | Rockbed solidifying work |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6596537B1 (en) | 1994-12-16 | 2003-07-22 | Chugai Seiyaku Kabushiki Kaisha | Human interleukin-6 receptor expression inhibitor |
| JP2009191582A (en) * | 2008-02-18 | 2009-08-27 | Ohbayashi Corp | Reinforcing member used for ground reinforcement, method for ground reinforcement, and ground reinforcement structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079159B2 (en) | 1995-02-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |