JP2011220079A - Encapsulation device - Google Patents

Encapsulation device Download PDF

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JP2011220079A
JP2011220079A JP2010093550A JP2010093550A JP2011220079A JP 2011220079 A JP2011220079 A JP 2011220079A JP 2010093550 A JP2010093550 A JP 2010093550A JP 2010093550 A JP2010093550 A JP 2010093550A JP 2011220079 A JP2011220079 A JP 2011220079A
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sealing
cylinder
sealing cylinder
main body
sealing device
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JP5610516B2 (en
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Eiji Nakada
英二 中田
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Central Research Institute of Electric Power Industry
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Abstract

PROBLEM TO BE SOLVED: To provide an encapsulation cylinder which is securely stuck to a digging hole with very simple composition.SOLUTION: A nut component 18 is made to rotate and move in the axial direction, a sealing tube 15 made of rubber is pressed to a flange part 11, and the sealing tube 15 is made to be expanded in diameter and is closely contacted to the inner surface of a digging hole 1. This mechanism prevents the sealing tube 15 from naturally coming off unless the nut component 18 is rotated reversely, and therefore, the close contact of the sealing tube 15 to the digging hole is ensured with a very simple reliable structure.

Description

本発明は、地盤等に掘削された掘削孔を封止するための封止装置に関する。   The present invention relates to a sealing device for sealing an excavation hole excavated in the ground or the like.

近年、高レベル放射性廃棄物を地下深部に処分する研究が実施されており、このための地下研究施設が国内でも２箇所に建設され、さらに炭鉱などの鉱山の地下を利用した研究も行われている。これらの研究では、岩盤性状調査や水質調査を行うためにボーリング掘削が実施され、掘削孔の内部を区画してシールすることが行われている。   In recent years, research to dispose of high-level radioactive waste in the deep underground has been carried out, and underground research facilities for this purpose have been built in two locations in Japan, and research using the underground of mines such as coal mines has also been conducted. Yes. In these studies, boring excavation is conducted to investigate rock properties and water quality, and the inside of the excavation hole is partitioned and sealed.

掘削孔の内部を区画してシールすることで、シールされた区画の部位を外部と遮断した状態で岩盤の性状や地下水の水質等を調査することができる。岩盤性状調査の一例としては、岩盤中での炭酸ガス（ＣＯ２）の移動挙動を把握することにより、放射性の炭素（例えば、Ｃ１４）の拡散状況を調査することが実施されている。 By partitioning and sealing the inside of the excavation hole, it is possible to investigate the properties of the rock mass, groundwater quality, etc. in a state where the sealed section is cut off from the outside. As an example of the rock property investigation, the diffusion state of radioactive carbon (for example, C 14 ) is investigated by grasping the movement behavior of carbon dioxide (CO 2 ) in the rock.

掘削孔の内部を区画してシールするために、流体圧により膨張自在な膨張体を備えたパッカーが従来から知られている（例えば、特許文献１参照）。特許文献１に開示されたパッカーは、筒体の外周に膨張体が嵌合されて構成され、筒体と膨張体の間に流体を供給することで膨張体を膨張させて掘削孔の内壁に密着させるものである。パッカーには地上からの配管を介して流体が供給管を通して供給される。   In order to partition and seal the inside of a drilling hole, a packer having an inflatable body that can be inflated by fluid pressure has been conventionally known (for example, see Patent Document 1). The packer disclosed in Patent Document 1 is configured by fitting an expansion body to the outer periphery of a cylinder, and by supplying fluid between the cylinder and the expansion body, the expansion body is inflated to the inner wall of the excavation hole. It is to adhere. A fluid is supplied to the packer through a supply pipe through a pipe from the ground.

岩盤中での炭酸ガス（ＣＯ２）の移動挙動を把握する調査を実施する場合、掘削孔の先端部位の封止区画でＣＯ２を放出し、球状に拡がるＣＯ２の拡散状況を検証している。掘削孔は小径で長距離にわたり掘削されているため、流体を供給するパッカーを用いた場合、掘削孔の状態によっては封止が不十分になることが考えられる。ＣＯ２の拡散状況を検証する際に封止が不十分になると、ＣＯ２が掘削孔を通って入口部から外部に漏れ出ることがあり、ＣＯ２の拡がりが不均一になって球状の拡がりを検証することが不可能になってしまう。 When conducting a survey to grasp the movement behavior of carbon dioxide (CO 2 ) in the bedrock, CO 2 is released in the sealed section at the tip of the excavation hole, and the diffusion state of CO 2 spreading into a spherical shape is verified. Yes. Since the excavation hole is excavated for a long distance with a small diameter, it may be considered that sealing is insufficient depending on the state of the excavation hole when a packer that supplies fluid is used. When the sealing is insufficient to validate the diffusion status of the CO 2, may CO 2 leaks to the outside from the inlet section through the borehole, the spherical spreading of the spread of the CO 2 becomes uneven It becomes impossible to verify.

特開２００２−１８０７７５号公報JP 2002-180775 A

本発明は上記状況に鑑みてなされたもので、簡単な構成で掘削孔の状態に拘わらず封止を確実に行うことができる封止装置を提供することを目的とする。   The present invention has been made in view of the above situation, and an object of the present invention is to provide a sealing device that can reliably perform sealing regardless of the state of a drilling hole with a simple configuration.

上記目的を達成するための請求項１に係る本発明の封止装置は、一端に大径のフランジ部が形成され掘削孔に挿入される本体軸と、前記本体軸の筒面に嵌合され一端部が前記フランジ部に規制される弾性材製の封止筒と、軸方向の位置が固定される状態で、前記封止筒を挟んで前記本体軸の他端側に移動自在に備えられ、前記封止筒を前記フランジ部側に押圧することで前記封止筒を拡径させる加圧筒と、前記加圧筒の軸方向の位置を調整することで封止筒の拡径状況を調整する移動調整手段とを備えたことを特徴とする。   In order to achieve the above object, a sealing device of the present invention according to claim 1 is fitted with a main body shaft formed with a large-diameter flange portion at one end and inserted into a drilling hole, and a cylindrical surface of the main body shaft. One end of the sealing cylinder made of an elastic material regulated by the flange part and a state where the position in the axial direction is fixed are movably provided on the other end side of the main body shaft with the sealing cylinder interposed therebetween. The pressure cylinder that expands the diameter of the sealing cylinder by pressing the sealing cylinder toward the flange portion side, and the diameter expansion situation of the sealing cylinder by adjusting the axial position of the pressure cylinder And a movement adjusting means for adjusting.

請求項１に係る本発明では、一端部がフランジ部に規制された状態で封止筒を本体軸に嵌合し、本体軸を掘削孔に挿入した状態で、加圧筒により封止筒をフランジ側に移動させることで、封止筒が拡径して掘削孔の内面に密着する。移動調整手段により加圧筒の軸方向の位置を調整することで、封止筒の拡径状態を調整し、封止筒の掘削孔への密着を確実にする。このため、掘削孔の状態に拘わらず封止を確実に行うことができ、特に、掘削孔の入口部での封止を確実にしてガスの流出を阻止することが可能になる。   In the present invention according to claim 1, the sealing cylinder is fitted by the pressure cylinder in a state where the sealing cylinder is fitted to the main body shaft in a state where one end portion is regulated by the flange portion, and the main body shaft is inserted into the excavation hole. By moving to the flange side, the diameter of the sealing cylinder expands and comes into close contact with the inner surface of the excavation hole. By adjusting the position of the pressure cylinder in the axial direction by the movement adjusting means, the diameter expansion state of the sealing cylinder is adjusted, and the sealing cylinder is firmly attached to the excavation hole. For this reason, it is possible to reliably perform the sealing regardless of the state of the excavation hole, and in particular, it is possible to prevent the outflow of gas by ensuring the sealing at the entrance of the excavation hole.

例えば、掘削孔の先端部位の封止区画でＣＯ２を放出し、球状に拡がるＣＯ２の拡散状況を検証してＣＯ２の移動挙動を調査する封止装置として適用することで、掘削孔の入口部でのＣＯ２の漏れを確実に阻止することができ、ＣＯ２の拡散の拡がりを球状に維持させてＣＯ２の移動挙動を正確に把握することが可能になる。 For example, the borehole of CO 2 was released in the sealing section of the distal end portion, by applying a sealing device to investigate the migratory behavior of CO 2 by examining the diffusion status of the CO 2 extending spherically borehole The leakage of CO 2 at the inlet can be reliably prevented, and the movement of CO 2 can be accurately grasped by maintaining the spread of CO 2 diffusion in a spherical shape.

本発明の態様として、封止筒を軸方向に分割することができる。また、軸方向に押圧された際に均等に拡径する筒状の案内部材や、長尺部材が筒状に並ぶ案内部材を封止筒の内周側に介在させることができる。このように、封止筒を分割したり、案内部材を介在させることにより、封止筒を均等に拡径することができ、掘削孔への密封をより確実に行うことができる。   As an aspect of the present invention, the sealing cylinder can be divided in the axial direction. In addition, a cylindrical guide member whose diameter is uniformly expanded when pressed in the axial direction and a guide member in which long members are arranged in a cylindrical shape can be interposed on the inner peripheral side of the sealing cylinder. Thus, by dividing the sealing cylinder or interposing the guide member, the diameter of the sealing cylinder can be increased uniformly, and sealing to the excavation hole can be performed more reliably.

そして、請求項２に係る本発明の封止装置は、請求項１に記載の封止装置において、移動調整手段は、前記封止筒が嵌合された際に他端側に突出する状態で前記本体軸の他端側に形成された雄ねじ部であり、前記加圧筒は、前記雄ねじ部に螺合する雌ねじが内周に形成されたナット部材であり、前記本体軸に前記封止筒を嵌合させた状態で、前記ナット部材を前記雄ねじ部に螺合させることにより前記封止筒をフランジ側に押圧して加圧筒の軸方向の位置を調整することを特徴とする。   And the sealing device of the present invention according to claim 2 is the sealing device according to claim 1, wherein the movement adjusting means protrudes to the other end side when the sealing cylinder is fitted. A male screw part formed on the other end side of the main body shaft, and the pressure cylinder is a nut member formed on an inner periphery of a female screw to be screwed into the male screw part, and the sealing cylinder is provided on the main body shaft. In a state where the nut is engaged, the nut member is screwed into the male screw portion, thereby pressing the sealing cylinder toward the flange side to adjust the axial position of the pressure cylinder.

請求項２に係る本発明では、加圧筒であるナット部材を雄ねじ部に螺合させて回転することで封止筒をフランジ側に押圧して拡径させることができる。このため、極めて簡単な構造で掘削孔の封止を確実に行うことができる。封止作業を容易にするため、ナット部材に着脱自在の把持手段を取り付けることで、人力により簡単にナット部材を回転させることができる。封止させた後に把持手段を外すことで、その後の作業の邪魔になることがない。   According to the second aspect of the present invention, the nut member, which is a pressurizing cylinder, is screwed into the male screw portion and rotated, whereby the sealing cylinder can be pressed toward the flange side to increase the diameter. For this reason, the excavation hole can be reliably sealed with an extremely simple structure. In order to facilitate the sealing operation, the nut member can be easily rotated by human power by attaching a detachable gripping means to the nut member. By removing the gripping means after sealing, it does not interfere with the subsequent work.

また、請求項３に係る本発明の封止装置は、請求項１もしくは請求項２に記載の封止装置において、前記本体軸の前記フランジ部には、前記封止筒が当接する面に前記封止筒の端縁が嵌合して前記端縁の外径側への移動を規制する凹部が形成されていることを特徴とする。   The sealing device according to a third aspect of the present invention is the sealing device according to the first or second aspect, wherein the flange portion of the main body shaft is in contact with the surface on which the sealing cylinder abuts. A concave portion is formed in which the end edge of the sealing cylinder is fitted to restrict movement of the end edge to the outer diameter side.

請求項３に係る本発明では、封止筒が拡径する際に端縁がフランジ部の凹部に嵌合して外径側への移動が規制され、端縁の位置がずれることなく封止筒が確実に拡径する。   In the present invention according to claim 3, when the diameter of the sealing cylinder is increased, the end edge is fitted into the concave portion of the flange portion, the movement to the outer diameter side is restricted, and the end edge is not displaced. The cylinder expands reliably.

また、請求項４にかかる本発明の封止装置は、請求項１から請求項３のいずれか一項に記載の封止装置において、前記加圧筒と前記封止筒の間に、前記封止筒の端縁が嵌合して前記封止筒の端縁の外径側への移動を規制するカラーを介在させたことを特徴とする。   A sealing device according to a fourth aspect of the present invention is the sealing device according to any one of the first to third aspects, wherein the sealing tube is interposed between the pressure cylinder and the sealing cylinder. A collar that is fitted to the end edge of the stopper cylinder and restricts movement of the end edge of the sealing cylinder to the outer diameter side is interposed.

請求項４に係る本発明では、加圧筒による封止筒のフランジ側への移動は封止筒の端縁が嵌合するカラーを介して伝えられ、封止筒の端縁の外径側への移動が規制されて力が伝達される。このため、径に拘わらず封止筒を確実に拡径させることができる。   In the present invention according to claim 4, the movement of the sealing cylinder toward the flange side by the pressure cylinder is transmitted via the collar to which the end of the sealing cylinder is fitted, and the outer diameter side of the end of the sealing cylinder The movement to is restricted and the force is transmitted. For this reason, it is possible to reliably expand the diameter of the sealing cylinder regardless of the diameter.

また、請求項５に係る本発明の封止装置は、請求項１から請求項４のいずれか一項に記載の封止装置において、前記本体軸には、前記掘削孔に配される機器と前記掘削孔の外部との接続を行う接続手段が貫通する貫通手段が備えられていることを特徴とする。   A sealing device according to a fifth aspect of the present invention is the sealing device according to any one of the first to fourth aspects, wherein the body shaft includes a device disposed in the excavation hole. Penetration means through which a connection means for connecting to the outside of the excavation hole penetrates is provided.

請求項５に係る本発明では、掘削孔に配される機器と掘削孔の外部との接続を行う接続手段を貫通手段により簡単に配することができる。例えば、封止装置を掘削孔の入口部に使用し、掘削孔の先端の封止区画から放出させるＣＯ２の搬送管を貫通手段に通すことで、ＣＯ２の搬送経路を容易に構築することができる。 In this invention which concerns on Claim 5, the connection means which connects the apparatus distribute | arranged to a digging hole and the exterior of a digging hole can be simply arranged by a penetration means. For example, a CO 2 transport path can be easily constructed by using a sealing device at the entrance of a drilling hole and passing a CO 2 transport pipe discharged from the sealing section at the tip of the drilling hole through the penetrating means. Can do.

本発明の封止装置は、簡単な構成で掘削孔に対する封止を確実に行うことが可能になる。特に、入口部の封止に適用して加圧筒を手動で操作することにより、簡単且つ確実に掘削孔の入口部の封止を行うことが可能になる。   The sealing device of the present invention can surely seal the excavation hole with a simple configuration. In particular, it is possible to easily and reliably seal the inlet portion of the excavation hole by manually operating the pressure cylinder by applying it to the inlet portion.

本発明の一実施例に係る封止装置を設置した状態の全体構成図である。It is a whole block diagram of the state which installed the sealing device which concerns on one Example of this invention. 本発明の一実施例に係る封止装置の分解斜視図である。It is a disassembled perspective view of the sealing device which concerns on one Example of this invention. 本発明の一実施例に係る封止装置の外観図である。It is an external view of the sealing device which concerns on one Example of this invention. 本発明の一実施例に係る封止装置の側面図である。It is a side view of the sealing device concerning one example of the present invention. 本発明の一実施例に係る封止装置の断面図である。It is sectional drawing of the sealing device which concerns on one Example of this invention. 本発明の一実施例に係る封止装置の断面図である。It is sectional drawing of the sealing device which concerns on one Example of this invention. 本発明の他の実施例に係る封止装置の分解斜視図である。It is a disassembled perspective view of the sealing device which concerns on the other Example of this invention. 本発明の他の実施例に係る封止装置の断面図である。It is sectional drawing of the sealing device which concerns on the other Example of this invention. 案内部材の斜視図である。It is a perspective view of a guide member. 案内部材の斜視図である。It is a perspective view of a guide member.

図１には本発明の一実施例に係る封止装置を掘削孔の入口部に設置した状態の全体構成、図２には本発明の一実施例に係る封止装置を分解して説明する斜視、図３には本発明の一実施例に係る封止装置を組立てた状態の全体の外観、図４には本発明の一実施例に係る封止装置を組立てた状態の全体の側面視状況を示してある。また、図５、図６には本発明の一実施例に係る封止装置の断面を示してあり、図５は封止筒が膨張していない状態、図６は封止筒が膨張して掘削孔の内壁に密着している状態である。   FIG. 1 shows an overall configuration of a state in which a sealing device according to an embodiment of the present invention is installed at the entrance of an excavation hole, and FIG. 2 shows an exploded view of the sealing device according to an embodiment of the present invention. 3 is a perspective view, FIG. 3 is an overall appearance of the sealing device according to one embodiment of the present invention, and FIG. 4 is a side view of the entire sealing device according to one embodiment of the present invention. The situation is shown. 5 and 6 show a cross-section of the sealing device according to one embodiment of the present invention. FIG. 5 shows a state where the sealing cylinder is not expanded, and FIG. 6 shows that the sealing cylinder is expanded. It is in a state of being in close contact with the inner wall of the excavation hole.

図１に示すように、小径で長尺の掘削孔１の先端部位には先端封止装置２が備えられ、先端封止装置２は流体が供給されることにより膨張して掘削孔１の内壁面に密着される。先端封止装置２で封止された掘削孔１の先端区画には、例えば、ガス供給手段３からＣＯ２ガスが送られ、先端区画からＣＯ２ガスが岩盤に拡散する。先端区画には、例えば、圧力センサー等のモニタ手段や封止した区画内に注水を行うための注水手段が備えられることもある。 As shown in FIG. 1, a distal end sealing device 2 is provided at the distal end portion of a small-diameter and long excavation hole 1, and the distal end sealing device 2 expands by being supplied with a fluid. It is in close contact with the wall. For example, CO 2 gas is sent from the gas supply means 3 to the tip section of the excavation hole 1 sealed by the tip sealing device 2, and the CO 2 gas diffuses from the tip section into the rock. The tip section may be provided with, for example, a monitoring means such as a pressure sensor or a water injection means for injecting water into the sealed section.

掘削孔１の入口部には本実施例の封止装置１０が配されている。封止装置１０には後述する貫通手段を通してガス供給手段３の配管３ａ（接続手段）が先端区画まで設置されている。封止装置１０は作業員が操作することにより後述する封止筒を拡径させ、封止筒を掘削孔１の内壁面に密着させる。作業員は密着の状態を目視確認しながら封止筒を拡径させるので、掘削孔１の状況に拘わらず封止筒の密着を確実に行うことができる。   The sealing device 10 of the present embodiment is disposed at the entrance of the excavation hole 1. In the sealing device 10, a pipe 3 a (connecting means) of the gas supply means 3 is installed up to the tip section through a penetrating means described later. The sealing device 10 expands the diameter of a sealing cylinder, which will be described later, by an operator's operation, and causes the sealing cylinder to adhere to the inner wall surface of the excavation hole 1. Since the worker enlarges the diameter of the sealing cylinder while visually confirming the close-contact state, the sealing cylinder can be reliably adhered regardless of the state of the excavation hole 1.

図２から図６に基づいて本実施例の封止装置１０を具体的に説明する。   The sealing device 10 of the present embodiment will be specifically described with reference to FIGS.

封止装置１０は、一端に大径のフランジ部１１が形成され掘削孔１に挿入される円柱状の本体軸１２を備えている。本体軸１２の他端側には移動調整手段としての雄ねじ部１３が形成され、フランジ部１１と雄ねじ部１３の間の筒部１４の筒面には円筒状の封止筒１５が嵌合している。封止筒１５はゴム製とされ（弾性材製）、封止筒１５の一端部がフランジ部１１に規制され、軸方向の位置が固定されている。封止筒１５が本体軸１２の筒部１４に嵌合された際、雄ねじ部１３は本体軸１２の他端側に突出する状態にされている。   The sealing device 10 includes a columnar body shaft 12 formed with a large-diameter flange portion 11 at one end and inserted into the excavation hole 1. A male screw portion 13 as a movement adjusting means is formed on the other end side of the main body shaft 12, and a cylindrical sealing tube 15 is fitted on the tube surface of the tube portion 14 between the flange portion 11 and the male screw portion 13. ing. The sealing cylinder 15 is made of rubber (made of an elastic material), one end of the sealing cylinder 15 is regulated by the flange portion 11, and the position in the axial direction is fixed. When the sealing cylinder 15 is fitted into the cylinder portion 14 of the main body shaft 12, the male screw portion 13 is projected to the other end side of the main body shaft 12.

本体軸１２のフランジ部１１の封止筒１５の端縁が当接する面には凹部１１ａが形成され、凹部１１ａには封止筒１５の端縁が嵌合するようになっている。封止筒１５の端縁が凹部１１ａに嵌合することで、端縁の外径側への移動が規制されるようになっている。   A concave portion 11a is formed on the surface of the flange portion 11 of the main body shaft 12 where the end edge of the sealing cylinder 15 abuts, and the end edge of the sealing cylinder 15 is fitted into the concave portion 11a. By fitting the end edge of the sealing cylinder 15 into the recess 11a, the movement of the end edge toward the outer diameter side is regulated.

軸方向の位置が固定された状態の封止筒１５の雄ねじ部１３側には、端部押え用のカラー１６及び移動力伝達用のカラー１７が設けられている。カラー１６は封止筒１５に近い径に設定されて封止筒１５の端縁が嵌合し、カラー１６により封止筒１５の端縁の外径側への移動が規制される。移動力伝達用のカラー１７は軸方向の長さが長い筒状に形成され、端部押え用のカラー１６は軸方向の長さが短いリング状に形成されている。使用する封止筒１５の径が変更になった場合、それに合わせて端部押え用のカラー１６だけが交換される。   An end pressing collar 16 and a moving force transmission collar 17 are provided on the male threaded portion 13 side of the sealing cylinder 15 in a state where the axial position is fixed. The collar 16 is set to a diameter close to the sealing cylinder 15 and the end edge of the sealing cylinder 15 is fitted, and the movement of the end edge of the sealing cylinder 15 to the outer diameter side is restricted by the collar 16. The moving force transmitting collar 17 is formed in a cylindrical shape having a long axial length, and the end pressing collar 16 is formed in a ring shape having a short axial length. When the diameter of the sealing cylinder 15 to be used is changed, only the end pressing collar 16 is exchanged accordingly.

本体軸１２の雄ねじ部１３には、内周に雌ねじが形成されたナット部材１８（加圧筒）が螺合し、ナット部材１８を回動させることにより、カラー１７、カラー１６を介して封止筒１５がフランジ部１１との間に挟まれた状態に押圧される。封止筒１５がフランジ部１１側に押圧されることにより、封止筒１５が拡径して掘削孔１の内壁に密着される（図５参照）。ナット部材１８の回動状態を調整することで、即ち、ナット部材１８の軸方向の位置を調整することで、封止筒１５は所望の状態に拡径される。   A nut member 18 (pressure cylinder) having an internal thread formed on the inner periphery thereof is screwed into the male screw portion 13 of the main body shaft 12, and the nut member 18 is rotated to be sealed via the collar 17 and the collar 16. The stop cylinder 15 is pressed in a state of being sandwiched between the flange portion 11. When the sealing cylinder 15 is pressed to the flange portion 11 side, the diameter of the sealing cylinder 15 is increased and is closely attached to the inner wall of the excavation hole 1 (see FIG. 5). By adjusting the rotating state of the nut member 18, that is, by adjusting the position of the nut member 18 in the axial direction, the diameter of the sealing cylinder 15 is expanded to a desired state.

本体軸１２の雄ねじ部１３とナット部材１８は硬さの異なる材質で形成されている。例えば、ナット部材１８が真鍮製で形成され、ナット部材１８に対し雄ねじ部１３が硬い材質で形成された状態にされている。これにより、屋外で操作した際にごみ等の異物が螺合部位に入り込んだ場合、ナット部材１８を回転させてもナット部材１８のねじ部が変形して回転が阻害されることがない。尚、ナット部材１８に対して雄ねじ部１３を硬い材質で形成することも可能である。   The male thread portion 13 and the nut member 18 of the main body shaft 12 are formed of materials having different hardness. For example, the nut member 18 is made of brass, and the male screw portion 13 is made of a hard material with respect to the nut member 18. Accordingly, when foreign matter such as dust enters the screwing site when operated outdoors, even if the nut member 18 is rotated, the threaded portion of the nut member 18 is not deformed and rotation is not hindered. In addition, it is also possible to form the external thread part 13 with a hard material with respect to the nut member 18.

図３に示すように、ナット部材１８の回転操作を容易にするため、本体軸１２の他端（フランジ部１１の逆側）の軸部には操作補助棒２１がねじ結合され、ナット部材１８には操作棒２２がねじ結合されている。操作補助棒２１を支えとして操作棒２２によりナット部材１８を回転させることにより、本体軸１２の回転を規制した状態でナット部材１８を本体軸１２に対して容易に回転させることができる。   As shown in FIG. 3, in order to facilitate the rotation operation of the nut member 18, an operation assisting rod 21 is screwed to the shaft portion of the other end of the main body shaft 12 (the opposite side of the flange portion 11). The operating rod 22 is screwed to the screw. By rotating the nut member 18 with the operation rod 22 with the operation auxiliary rod 21 as a support, the nut member 18 can be easily rotated with respect to the main body shaft 12 while the rotation of the main body shaft 12 is restricted.

本体軸１２には配管用・配線用の管路孔２３（貫通手段）が形成され、本体軸１２の他端（フランジ部１１の逆側）の端面部には配管や配線を接続するための接続部材２４が設けられている。例えば、掘削孔１の先端の封止区画から放出させるＣＯ２の搬送管として管路孔２３を使用することで、掘削孔１の外部のガス供給手段３（図１参照）からＣＯ２放出部（機器）までのＣＯ２搬送の経路を容易に構築することができる。 The main body shaft 12 is formed with piping and wiring pipe holes 23 (penetrating means), and the other end (the opposite side of the flange portion 11) of the main body shaft 12 is connected to piping and wiring. A connecting member 24 is provided. For example, using a conduit hole 23 as a conveying tube of CO 2 to be released from the sealing section of the distal end of the borehole 1, an external gas supply means 3 of borehole 1 (see FIG. 1) from the CO 2 emission regions A route for transporting CO 2 to (equipment) can be easily constructed.

掘削孔１の先端の封止区画に圧力センサー等の機器を配する場合、配線を管路孔２３に通すことで、機器と掘削孔１の外部とを接続する接続手段の経路を容易に構築することができる。   When a device such as a pressure sensor is arranged in the sealing section at the tip of the excavation hole 1, a path of a connecting means for connecting the device and the outside of the excavation hole 1 is easily constructed by passing the wiring through the duct hole 23. can do.

上述した封止装置１０により掘削孔１の入口部を封止する場合、本体軸１２の筒部１４に、封止筒１５、カラー１７、カラー１６を嵌合し、雄ねじ部１３にナット部材１８を螺合した状態の組立て体を準備する。接続部材２４を介してガス供給手段３（図１参照）からの配管を管路孔２３に接続する。また、本体軸１２に操作補助棒２１をねじ結合すると共に、ナット部材１８に操作棒２２をねじ結合する。   When the inlet portion of the excavation hole 1 is sealed by the sealing device 10 described above, the sealing tube 15, the collar 17, and the collar 16 are fitted to the tube portion 14 of the main body shaft 12, and the nut member 18 is fitted to the male screw portion 13. An assembly is prepared in a state of screwing. A pipe from the gas supply means 3 (see FIG. 1) is connected to the pipe hole 23 via the connecting member 24. Further, the operation auxiliary rod 21 is screwed to the main body shaft 12 and the operation rod 22 is screwed to the nut member 18.

この状態で掘削孔１の入口部に組立て体を挿入する。   In this state, the assembly is inserted into the entrance of the excavation hole 1.

組立て体を掘削孔１に挿入した状態で（図５の状態）、操作補助棒２１を支えとして操作棒２２によりナット部材１８を回転させ、ナット部材１８を軸方向に移動させてカラー１７、カラー１６を介して封止筒１５を押圧する。ナット部材１８の移動により封止筒１５がフランジ部１１側に押圧され、封止筒１５が拡径して掘削孔１の内壁に密着される（図６の状態）。   With the assembled body inserted into the excavation hole 1 (the state shown in FIG. 5), the nut member 18 is rotated by the operation rod 22 with the operation auxiliary rod 21 as a support, and the nut member 18 is moved in the axial direction. The sealing cylinder 15 is pressed through 16. The sealing cylinder 15 is pressed toward the flange portion 11 by the movement of the nut member 18, the diameter of the sealing cylinder 15 is expanded, and is in close contact with the inner wall of the excavation hole 1 (state of FIG. 6).

封止筒１５の一端側の端縁はフランジ部１１の凹部１１ａに嵌合して外径側への移動が規制され、他端側の端縁はカラー１６により外径側への移動が規制されている。このため、封止筒１５が拡径する際に端縁の位置がずれることなく封止筒１５が確実に拡径する。   The edge of one end side of the sealing cylinder 15 is fitted into the recess 11 a of the flange portion 11 to restrict the movement toward the outer diameter side, and the edge of the other end side is restricted from moving toward the outer diameter side by the collar 16. Has been. For this reason, when the diameter of the sealing cylinder 15 is increased, the diameter of the sealing cylinder 15 is surely increased without shifting the position of the edge.

封止筒１５の掘削孔１の内面への密着の状態を目視しながら操作補助棒２１を支えとして操作棒２２によりナット部材１８を回転させ、ナット部材１８の軸方向の位置を調整する。これにより、封止筒１５の拡径状態が任意に調整され、封止筒１５の掘削孔１への密着が確実になり、掘削孔１の状態に拘わらず封止が確実になる。   The nut member 18 is rotated by the operation rod 22 while the operation auxiliary rod 21 is supported while observing the close contact state of the sealing cylinder 15 to the inner surface of the excavation hole 1, and the axial position of the nut member 18 is adjusted. Thereby, the diameter expansion state of the sealing cylinder 15 is arbitrarily adjusted, and the tight adhesion of the sealing cylinder 15 to the excavation hole 1 is ensured, and the sealing is ensured regardless of the state of the excavation hole 1.

封止筒１５を掘削孔１の内面に密着させた後、ねじ結合を解除して操作補助棒２１及び操作棒２２を取り外す。これにより、その後の操作に操作補助棒２１及び操作棒２２が邪魔になることがない。   After the sealing cylinder 15 is brought into close contact with the inner surface of the excavation hole 1, the screw connection is released and the operation auxiliary bar 21 and the operation bar 22 are removed. Thereby, the operation auxiliary rod 21 and the operation rod 22 do not interfere with subsequent operations.

操作補助棒２１及び操作棒２２を取り外した後、ガス供給手段３（図１参照）から掘削孔１の先端区画にＣＯ２ガスを供給し、先端区画からＣＯ２ガスを放出させる。これにより、ＣＯ２ガスが岩盤に拡散し、球状に拡がるＣＯ２の拡散状況を検証して（コア採取等）ＣＯ２ガスの移動挙動が把握される。 After the operation auxiliary rod 21 and the operation rod 22 are removed, CO 2 gas is supplied from the gas supply means 3 (see FIG. 1) to the tip section of the excavation hole 1 and the CO 2 gas is released from the tip section. As a result, CO 2 gas diffuses into the rock and the diffusion state of CO 2 that expands into a spherical shape is verified (core collection or the like) to grasp the movement behavior of CO 2 gas.

先端封止装置２の封止が十分に行われていない場合、拡散したＣＯ２ガスが掘削孔１を通って入口部側に移動する。掘削孔１の入口部は、ナット部材１８の回転操作により封止が確実に行われている封止装置１０で封止されているため、掘削孔１を移動したＣＯ２ガスが外部に漏れることがない。このため、球状に拡がるＣＯ２の拡散が乱されることがなく球状の拡がりが維持され、ＣＯ２ガスの移動挙動を正確に行うことができる。 When the tip sealing device 2 is not sufficiently sealed, the diffused CO 2 gas moves to the inlet side through the excavation hole 1. Since the inlet portion of the excavation hole 1 is sealed by the sealing device 10 that is reliably sealed by the rotation operation of the nut member 18, the CO 2 gas that has moved through the excavation hole 1 leaks to the outside. There is no. For this reason, the diffusion of the spherical CO 2 is not disturbed, the spherical expansion is maintained, and the movement behavior of the CO 2 gas can be accurately performed.

上述した封止装置１０は、作業員の手動により、ナット部材１８を雄ねじ部１３に螺合させて回転することで封止筒１５をフランジ部１１側に押圧して拡径させるので、ナット部材１８を逆回転させない限り、自然には外れない機構となり、信頼性の高い極めて簡単な構造で、掘削孔１の入口部の封止を確実に行うことができる。   In the sealing device 10 described above, since the nut member 18 is screwed into the male screw portion 13 and rotated manually by an operator, the sealing cylinder 15 is pressed toward the flange portion 11 to expand the diameter. As long as 18 is not rotated in reverse, the mechanism does not come off naturally, and the entrance portion of the borehole 1 can be reliably sealed with a highly reliable and extremely simple structure.

図７、図８に基づいて封止装置の他の実施例を説明する。   Another embodiment of the sealing device will be described with reference to FIGS.

図７には本発明の他の実施例に係る封止装置の斜視状況を示してある。尚、図２から図６に示した部材と同一部材には同一符号を付して重複する説明は省略してある。   FIG. 7 shows a perspective view of a sealing device according to another embodiment of the present invention. The same members as those shown in FIGS. 2 to 6 are denoted by the same reference numerals, and redundant description is omitted.

図７に示した封止装置は、封止筒１５が２重の筒で構成されている。即ち、図７に示すように、ゴム製の封止筒１５が内筒１５ａと外筒１５ｂで構成されている。封止筒１５を内筒１５ａと外筒１５ｂで構成したことにより、掘削孔１の径が変化しても（多少大きくなっても）外筒１５ｂにより対応することができる。また、筒を２重にしたことにより、均一な膨張を促進することができる。   In the sealing device shown in FIG. 7, the sealing cylinder 15 is constituted by a double cylinder. That is, as shown in FIG. 7, the rubber sealing cylinder 15 is composed of an inner cylinder 15a and an outer cylinder 15b. By configuring the sealing cylinder 15 with the inner cylinder 15a and the outer cylinder 15b, even if the diameter of the excavation hole 1 is changed (somewhat larger), the outer cylinder 15b can cope with it. Moreover, uniform expansion can be promoted by making the cylinder double.

図８には本発明の他の実施例に係る封止装置の断面を示してあり、図８（ａ）は封止筒が膨張していない状態、図８（ｂ）は封止筒が膨張して掘削孔の内壁に密着している状態である。尚、図２から図６に示した部材と同一部材には同一符号を付して重複する説明は省略してある。   FIG. 8 shows a cross section of a sealing device according to another embodiment of the present invention. FIG. 8 (a) shows a state where the sealing cylinder is not expanded, and FIG. 8 (b) shows an expansion of the sealing cylinder. And is in close contact with the inner wall of the excavation hole. The same members as those shown in FIGS. 2 to 6 are denoted by the same reference numerals, and redundant description is omitted.

図８に示した封止装置２６は、本体軸１２の筒部１４に嵌合される封止筒２７が軸方向に分割され、分割された封止筒２７の間にスペーサー２８が配された構成になっている。   In the sealing device 26 shown in FIG. 8, a sealing cylinder 27 fitted to the cylindrical portion 14 of the main body shaft 12 is divided in the axial direction, and a spacer 28 is arranged between the divided sealing cylinders 27. It is configured.

図８（ａ）に示すように、掘削孔１の内部に組立て体（ガス供給手段３からの配管、操作補助棒２１、操作棒２２を省略した組立て体）を挿入し、ナット部材１８を回転させて軸方向に移動させる。カラー１７、カラー１６を介して封止筒２７がフランジ部１１側に押圧され、図８（ｂ）に示すように、分割された封止筒２７がそれぞれ拡径して掘削孔１の内壁に密着される。   As shown in FIG. 8A, an assembly (an assembly from which the piping from the gas supply means 3, the operation auxiliary bar 21, and the operation bar 22 are omitted) is inserted into the borehole 1, and the nut member 18 is rotated. And move it in the axial direction. The sealing cylinder 27 is pressed to the flange portion 11 side through the collar 17 and the collar 16, and the divided sealing cylinders 27 are expanded in diameter as shown in FIG. 8 (b) to the inner wall of the excavation hole 1. Close contact.

図８に示した封止装置２６は、分割された封止筒２７がそれぞれ拡径して掘削孔１の内壁に密着されるので、軸方向の２箇所で封止筒２７が掘削孔１の内壁に密着する。このため、掘削孔１の形状に拘わらず封止装置２６を軸心部位に位置させることが可能になり、掘削孔１への密封をより確実に行うことができる。   In the sealing device 26 shown in FIG. 8, the divided sealing cylinders 27 are each expanded in diameter and are in close contact with the inner wall of the excavation hole 1. Close contact with the inner wall. For this reason, it becomes possible to position the sealing device 26 in an axial center part irrespective of the shape of the excavation hole 1, and the sealing to the excavation hole 1 can be performed more reliably.

図９、図１０に基づいて封止筒を均等に拡径させるための案内部材を説明する。   A guide member for uniformly expanding the diameter of the sealing cylinder will be described with reference to FIGS. 9 and 10.

図９、図１０には案内部材の斜視を示してあり、それぞれ（ａ）は拡径前の状態、（ｂ）は拡径後の常態である。図示の案内部材は、封止筒１５もしくは封止筒２７の内側の本体軸１２の筒部１４に嵌合され、ナット部材１８の軸方向の移動により封止筒１５もしくは封止筒２７と共に拡径する部材である。   9 and 10 show perspective views of the guide member, where (a) is a state before diameter expansion and (b) is a normal state after diameter expansion. The illustrated guide member is fitted into the cylinder portion 14 of the main body shaft 12 inside the sealing cylinder 15 or the sealing cylinder 27, and is expanded together with the sealing cylinder 15 or the sealing cylinder 27 by the axial movement of the nut member 18. It is a member to be calibrated.

図９に示した案内部材３１は薄板金属製の筒状部材であり、封止筒１５もしくは封止筒２７と共に筒面３２が均等に拡径し（図９（ｂ）の状態）、周方向の全体で封止筒１５もしくは封止筒２７が均等に拡径する状態に補助する。これにより、封止筒１５もしくは封止筒２７の周面の全体を均等に拡径させることができる。   The guide member 31 shown in FIG. 9 is a cylindrical member made of thin metal, and the cylindrical surface 32 is uniformly expanded in diameter together with the sealing cylinder 15 or the sealing cylinder 27 (state of FIG. 9B), and the circumferential direction As a whole, the sealing cylinder 15 or the sealing cylinder 27 is assisted in a state where the diameter is uniformly expanded. Thereby, the whole peripheral surface of the sealing cylinder 15 or the sealing cylinder 27 can be expanded uniformly.

図１０に示した案内部材３５は薄板金属製の長尺の矩形部材３６が筒状に複数枚並べられた部材であり、封止筒１５もしくは封止筒２７と共に矩形部材３６がそれぞれ拡径し（図９（ｂ）の状態）、周方向の複数個所で封止筒１５もしくは封止筒２７が均等に拡径する状態に補助する。これにより、封止筒１５もしくは封止筒２７の周面を均等に拡径させることができる。   The guide member 35 shown in FIG. 10 is a member in which a plurality of long rectangular members 36 made of a thin metal plate are arranged in a cylindrical shape, and the rectangular members 36 increase in diameter together with the sealing cylinder 15 or the sealing cylinder 27. (The state of FIG. 9B) assists in a state where the sealing cylinder 15 or the sealing cylinder 27 is uniformly expanded in diameter at a plurality of locations in the circumferential direction. Thereby, the diameter of the peripheral surface of the sealing cylinder 15 or the sealing cylinder 27 can be expanded uniformly.

本発明は、地盤等に掘削された掘削孔を封止するための封止装置の産業分野で利用することができる。   INDUSTRIAL APPLICATION This invention can be utilized in the industrial field | area of the sealing device for sealing the excavation hole excavated by the ground etc.

１ 掘削孔
２ 先端封止装置
３ ガス供給手段
１０、２６ 封止装置
１１ フランジ部
１２ 本体軸
１３ 雄ねじ部
１４ 筒部
１５、２７ 封止筒
１６、１７ カラー
１８ ナット部材
２１ 操作補助棒
２２ 操作棒
２３ 管路孔
２４ 溶接部材
２８ スペーサー
３１、３５ 案内部材
３２ 筒面
３６ 矩形部材 DESCRIPTION OF SYMBOLS 1 Excavation hole 2 Tip sealing device 3 Gas supply means 10, 26 Sealing device 11 Flange part 12 Main body shaft 13 Male thread part 14 Tube part 15, 27 Sealing cylinder 16, 17 Collar 18 Nut member 21 Operation auxiliary bar 22 Operation bar 23 Pipe hole 24 Welding member 28 Spacer 31, 35 Guide member 32 Cylindrical surface 36 Rectangular member

Claims (5)

一端に大径のフランジ部が形成され掘削孔に挿入される本体軸と、
前記本体軸の筒面に嵌合され一端部が前記フランジ部に規制される弾性材製の封止筒と、
軸方向の位置が固定される状態で、前記封止筒を挟んで前記本体軸の他端側に移動自在に備えられ、前記封止筒を前記フランジ部側に押圧することで前記封止筒を拡径させる加圧筒と、
前記加圧筒の軸方向の位置を調整することで封止筒の拡径状況を調整する移動調整手段とを備えた
ことを特徴とする封止装置。 A main body shaft formed with a large-diameter flange at one end and inserted into the excavation hole;
A sealing cylinder made of an elastic material fitted to the cylindrical surface of the main body shaft and having one end portion restricted by the flange portion;
In a state where the position in the axial direction is fixed, the sealing cylinder is provided movably on the other end side of the main body shaft with the sealing cylinder interposed therebetween, and the sealing cylinder is pressed against the flange portion side. A pressure cylinder for expanding the diameter;
A sealing device comprising: a movement adjusting means for adjusting a diameter expansion state of the sealing cylinder by adjusting a position of the pressure cylinder in an axial direction. 請求項１に記載の封止装置において、
移動調整手段は、前記封止筒が嵌合された際に他端側に突出する状態で前記本体軸の他端側に形成された雄ねじ部であり、
前記加圧筒は、前記雄ねじ部に螺合する雌ねじが内周に形成されたナット部材であり、
前記本体軸に前記封止筒を嵌合させた状態で、前記ナット部材を前記雄ねじ部に螺合させることにより前記封止筒をフランジ側に押圧して加圧筒の軸方向の位置を調整する
ことを特徴とする封止装置。 The sealing device according to claim 1,
The movement adjusting means is a male screw portion formed on the other end side of the main body shaft in a state of protruding to the other end side when the sealing cylinder is fitted,
The pressurizing cylinder is a nut member in which an internal thread that is screwed into the external thread portion is formed on the inner periphery,
In a state where the sealing cylinder is fitted to the main body shaft, the nut member is screwed into the male screw portion, thereby pressing the sealing cylinder toward the flange and adjusting the axial position of the pressure cylinder. A sealing device characterized by that. 請求項１もしくは請求項２に記載の封止装置において、
前記本体軸の前記フランジ部には、前記封止筒が当接する面に前記封止筒の端縁が嵌合して前記端縁の外径側への移動を規制する凹部が形成されている
ことを特徴とする封止装置。 In the sealing device according to claim 1 or 2,
The flange portion of the main body shaft is formed with a concave portion that fits an end edge of the sealing cylinder to a surface with which the sealing cylinder abuts and restricts movement of the end edge to the outer diameter side. A sealing device characterized by that. 請求項１から請求項３のいずれか一項に記載の封止装置において、
前記加圧筒と前記封止筒の間に、前記封止筒の端縁が嵌合して前記封止筒の端縁の外径側への移動を規制するカラーを介在させた
ことを特徴とする封止装置。 In the sealing device according to any one of claims 1 to 3,
A collar is provided between the pressure cylinder and the sealing cylinder, and an end of the sealing cylinder is fitted to restrict the movement of the end edge of the sealing cylinder to the outer diameter side. A sealing device. 請求項１から請求項４のいずれか一項に記載の封止装置において、
前記本体軸には、前記掘削孔に配される機器と前記掘削孔の外部との接続を行う接続手段が貫通する貫通手段が備えられている
ことを特徴とする封止装置。




In the sealing device according to any one of claims 1 to 4,
The main body shaft is provided with a penetrating means through which a connecting means for connecting a device arranged in the excavation hole and the outside of the excavation hole passes.




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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141470A (en) * 2014-07-01 2014-11-12 中煤科工集团西安研究院有限公司 Pore-forming and sealing method for hydraulic fracturing borehole casing section in underground coal mine
KR101589264B1 (en) * 2015-04-09 2016-01-28 (주)에이스수자원개발 Cleaning Method and Apparatus of Tube Well
CN107503740A (en) * 2017-10-09 2017-12-22 开滦(集团)有限责任公司技术中心 Mechanical swelling type hole-sealing pressure measuring device and pressure testing method

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JPH061498U (en) * 1992-06-16 1994-01-11 株式会社熊谷組 Expansion packer for backfill injection
JP2002173380A (en) * 2000-12-06 2002-06-21 Konoike Construction Co Ltd Method of suppressing alkaline aggregate reaction in concrete structure
JP2002180775A (en) * 2000-12-15 2002-06-26 Nlc:Kk Packer

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JPS5545938A (en) * 1978-09-29 1980-03-31 Shimazaki Mixing Equip Packer
JPH04353190A (en) * 1991-05-29 1992-12-08 Tokyu Constr Co Ltd Percussion method
JPH061498U (en) * 1992-06-16 1994-01-11 株式会社熊谷組 Expansion packer for backfill injection
JP2002173380A (en) * 2000-12-06 2002-06-21 Konoike Construction Co Ltd Method of suppressing alkaline aggregate reaction in concrete structure
JP2002180775A (en) * 2000-12-15 2002-06-26 Nlc:Kk Packer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141470A (en) * 2014-07-01 2014-11-12 中煤科工集团西安研究院有限公司 Pore-forming and sealing method for hydraulic fracturing borehole casing section in underground coal mine
CN104141470B (en) * 2014-07-01 2016-09-28 中煤科工集团西安研究院有限公司 The pore-forming molding method of underground coal mine fracturing borehole casing section
KR101589264B1 (en) * 2015-04-09 2016-01-28 (주)에이스수자원개발 Cleaning Method and Apparatus of Tube Well
CN107503740A (en) * 2017-10-09 2017-12-22 开滦(集团)有限责任公司技术中心 Mechanical swelling type hole-sealing pressure measuring device and pressure testing method

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