JP2010261188A - Packer device for water interception - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packer device for water interception having a wear resistance and a strength increased using a metal on the surface and also having a self-recovering force since a conventional air packer for water interception which is moved or pulled up when a measuring device connected to a rod shaft and having the air packer near the bottom end thereof is inserted into a bored hole excavated in a ground, and the air packer is expanded to investigate underground water by the measuring device. <P>SOLUTION: This packer device 10 is attached to the support pipe 5 of a measuring part 4 which is inserted into a bored hole 3 excavated in a ground or a casing tube 3a provided for preventing the wall of the bored hole from collapsing, and inflated to intercept water in the bored hole 3 or the casing tube 3a. The packer device 10 comprises a super elastic alloy-made deformed cylindrical body 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、地中に掘削したボーリング孔の内部を不透水層において遮水し、地下水の流出を防止したり、地層内の地下水流動層に関する情報を検出するための、遮水するパッカー技術に関するものである。   TECHNICAL FIELD The present invention relates to a water-blocking packer technique for blocking the inside of a bored hole excavated in the ground in an impermeable layer and preventing outflow of groundwater or detecting information on a groundwater fluidized layer in the formation. Is.

地下構造物等を構築する場合に、その安全性や周囲への影響を予測・評価するため、ボーリング調査を行い、土質や岩盤や地下水等の試料を採集し、地下の地質状態を正確に把握し基礎資料を得る。この場合、地下水調査において、地下水位や地下水の流れる速さや流れる方向等を確認すること等が含まれている。 When building an underground structure, in order to predict and evaluate its safety and impact on the surroundings, a borehole survey is conducted, and samples such as soil quality, bedrock, and groundwater are collected to accurately grasp the underground geological condition. And get basic materials. In this case, the groundwater survey includes checking the groundwater level, the speed and direction of the groundwater flow, and the like.

地中に掘削したボーリング孔に、ロッド軸に接続し、下端近傍に遮水用エアパッカーを有する測定装置を挿入し、コンプレッサーを備えたパッカー作動装置により前記エアパッカーを膨張させて、ボーリング孔内の地下水位や地下水の流れる速さや流れる方向等を確認する特許文献１が挙げられる。遮水用エアパッカーの例としてゴム又は軟質プラスチック等の柔軟で気密性を有する素材よりなるチューブ体を、ポリエステル繊維、ナイロン繊維、アラミド繊維などの強度部材で補強した遮水用エアパッカーの例として特許文献２及び特許文献３が挙げられる。   A boring hole excavated in the ground is connected to the rod shaft, a measuring device having a water shielding air packer is inserted near the lower end, and the air packer is expanded by a packer operating device equipped with a compressor. Patent Document 1 that confirms the groundwater level, the speed and direction of flow of groundwater, and the like. As an example of a water shielding air packer, an example of a water shielding air packer in which a tube body made of a flexible and airtight material such as rubber or soft plastic is reinforced with a strength member such as polyester fiber, nylon fiber, or aramid fiber. Patent document 2 and patent document 3 are mentioned.

特開平６−２７３５３８JP-A-6-273538 特開２００３−１６１０９４JP 2003-161094 A 特開２００１−１７３８０８JP 2001-173808 A

地中に掘削したボーリング孔内、又は、ボーリング孔の孔壁の崩壊防止用に設けられたケーシングチューブ内に、ロッド軸に接続し、下端近傍に遮水用エアパッカーを有する測定装置を挿入し、コンプレッサーを備えたパッカー作動装置により前記エアパッカーを膨張させて、地下水調査を終了すると次の調査位置に遮水用エアパッカーを移動させたり、抜き上げる。この時、削孔の孔壁の岩石等の障害物やケーシングチューブ内側に引っ掛かり摩耗したり傷付き、遮水用エアパッカーの寿命が短いという問題点があった。本発明はこのような点に鑑みて成されたものであり、その目的は、表面に金属を用いて耐摩耗性や強度を向上させ、自己復元力を有する遮水用パッカー装置を提供することにある。 Insert a measuring device connected to the rod shaft in the borehole drilled into the ground or in the casing tube provided to prevent the borehole wall from collapsing and having a water-impervious air packer near the lower end. The air packer is inflated by a packer actuating device equipped with a compressor, and when the groundwater survey is completed, the impermeable air packer is moved to the next survey position or pulled out. At this time, there is a problem that obstacles such as rocks on the hole wall of the drilling hole and the inner wall of the casing tube get caught and worn or scratched, and the life of the water shielding air packer is short. The present invention has been made in view of these points, and an object of the present invention is to provide a water-impervious packer device that uses a metal on the surface to improve wear resistance and strength and has a self-restoring force. It is in.

上述の目的を達成するために、請求項１の発明は、地中に掘削したボーリング孔内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ内に、挿入される測定部の支持パイプに取り付けて膨張させて前記ボーリング孔内、又は、前記ケーシングチューブ内部を遮水するための遮水用パッカー装置において、超弾性合金製の異径円筒体を備えたことを特徴とする遮水用パッカー装置である。
請求項２の発明は、外側に超弾性合金製の網状素材から成る異径円筒体と、内側に複数の補強リブを有する遮水ゴム体とを備えたことを特徴とする遮水用パッカー装置である。
請求項３の発明は、遮水ゴム体を外側と、内側とから超弾性合金製の網状素材から成る異径円筒体により挟持してなることを特徴とする遮水用パッカー装置である。
請求項４の発明は、遮水ゴム体の外側に超弾性合金製の網状素材から成る異径円筒体を設け、内側に超弾性合金製のたる形ばねを設けてなることを特徴とする遮水用パッカー装置である。 In order to achieve the above-mentioned object, the invention of claim 1 is to support a measurement unit inserted in a borehole drilled in the ground or a casing tube provided for preventing the borehole wall from collapsing. A water-impervious packer device that is attached to a pipe and inflated to insulate the inside of the borehole or the inside of the casing tube. Packer device.
According to a second aspect of the present invention, there is provided a water-impervious packer device comprising: a cylindrical body having a different diameter made of a net-like material made of a superelastic alloy on the outside; and a water-impervious rubber body having a plurality of reinforcing ribs on the inner side. It is.
According to a third aspect of the present invention, there is provided a water-impervious packer device characterized in that a water-impervious rubber body is sandwiched by a different-diameter cylindrical body made of a net-like material made of a superelastic alloy from the outside and the inside.
The invention according to claim 4 is characterized in that a cylindrical body made of a superelastic alloy net is provided on the outer side of the water-impervious rubber body, and a barrel spring made of a superelastic alloy is provided on the inner side. This is a water packer device.

請求項１の場合、表面が超弾性合金製部材の異径円筒体に保護されているために、変形しても自己復元力が働き、このためにボーリング孔内、又は、ボーリング孔の孔壁の崩壊防止用に設けられたケーシングチューブ内にて、パッカー装置は膨張した状態で、気密性、水密性を確実に保持し遮水すると共に測定部４を確実に固定する。従来、図１の鎖線表示されているような、エアーコンプレッサーの関係の装置が省略できて、地下水流測定装置が安価であり省資源で、且つ、その取扱が容易となり、便利である。
請求項２の場合、表面の異径円筒体が、網状の超弾性合金製の素材から成り立っているために、しなやかに変形し、しなやかに自己復元力が働き、膨張形態を容易に保持する働きがある。更に、第１の遮水ゴム体の太鼓状突部を含む表面に対して内側に直角に設けてある複数の補強リブにより、元の形状を保とうとする働き（補強リブによる変形防止の作用（自己復元力））により、変形しても太鼓状突部を含む第１の遮水ゴム体が膨張して元の形状に回復する。このためにボーリング孔内、又は、ボーリング孔の孔壁の崩壊防止用に設けられたケーシングチューブ内にて、遮水用パッカー装置は膨張した状態で、第１の遮水ゴム体により気密性、水密性を確実に保持し遮水すると共に測定部を確実に固定することが可能である。従来、図１の鎖線表示されているような、エアーコンプレッサーの関係の装置が省略できて、地下水流測定装置が安価となり省資源で、且つ、その取扱が容易となり、便利である。
請求項３の場合は、遮水ゴム体を外側と、内側とから超弾性合金製の網状素材から成る異径円筒体により挟持してなることを特徴とする遮水用パッカー装置であるから、外側と、内側との二つの網状の超弾性合金製の素材から成る異径円筒体により、表裏二面から遮水ゴム体が挟持支持されているために、しなやかに変形し、しなやかに自己復元力が働き、膨張形態を容易に確実に保持する働きがあり、確実に遮水することが出来ると共に測定部を確実に固定することが可能である。これにより従来、図１の鎖線表示されているような、エアーコンプレッサーの関係の装置が省略できて、地下水流測定装置が安価となり省資源で、且つ、その取扱が容易となり、便利である。
請求項４の場合は、請求項３と同様に、遮水ゴム体の外側に超弾性合金製の網状素材から成る異径円筒体を設け、内側に超弾性合金製のたる形ばねを設けてなることを特徴とする遮水用パッカー装置であるから、外側の網状の超弾性合金製の素材から成る異径円筒体と、内側の超弾性合金製のたる形ばねにより、表裏二面から遮水ゴム体が挟持支持されているために、しなやかに変形し、しなやかに自己復元力が働き、膨張形態を容易に確実に保持する働きがあり、確実に遮水することが出来ると共に測定部を確実に固定することが可能である。これにより従来、図１の鎖線表示されているような、エアーコンプレッサーの関係の装置が省略できて、地下水流測定装置が安価となり省資源で、且つ、その取扱が容易となり、便利である。 In the case of claim 1, since the surface is protected by the different diameter cylindrical body made of the superelastic alloy member, the self-restoring force works even if it is deformed. For this reason, the bore wall or the hole wall of the bore hole In the casing tube provided for preventing the collapse of the water, the packer device is in an expanded state to reliably maintain airtightness and watertightness and to block water, and to securely fix the measuring unit 4. Conventionally, a device related to an air compressor as indicated by a chain line in FIG. 1 can be omitted, and a groundwater flow measuring device is inexpensive, resource-saving, easy to handle, and convenient.
In the case of claim 2, since the cylindrical body having a different diameter on the surface is made of a reticulated superelastic alloy material, it deforms supple, supplely has a self-restoring force, and easily maintains an expanded form. There is. Furthermore, the plurality of reinforcing ribs provided at right angles to the inside of the surface including the drum-like protrusions of the first water-impervious rubber body work to keep the original shape (the action of preventing deformation by the reinforcing ribs ( Due to the self-restoring force)), the first water-impervious rubber body including the drum-like protrusions expands and recovers to its original shape even when deformed. For this purpose, in the boring hole or in the casing tube provided for preventing the hole wall of the boring hole from collapsing, the water shielding packer device is in an expanded state by the first water shielding rubber body, It is possible to reliably maintain water tightness and water shielding, and to securely fix the measurement unit. Conventionally, a device related to an air compressor as indicated by a chain line in FIG. 1 can be omitted, a groundwater flow measuring device is inexpensive, resource-saving, easy to handle, and convenient.
In the case of claim 3, since the water-impervious rubber body is sandwiched by a different diameter cylindrical body made of a net-like material made of a superelastic alloy from the outside and the inside, the water-impervious packer device, Because the water-impervious rubber body is sandwiched and supported from the front and back surfaces by two different-diameter cylinders made of a superelastic alloy material on the outside and the inside, it flexibly deforms and supplely self-restores. The force works and has the function of easily and reliably holding the expanded form, and can surely shield the water and can securely fix the measuring section. Thus, the conventional apparatus related to the air compressor as shown by the chain line in FIG. 1 can be omitted, and the groundwater flow measuring device is inexpensive, resource-saving, easy to handle, and convenient.
In the case of Claim 4, similarly to Claim 3, a cylindrical body of a different diameter made of a net material made of superelastic alloy is provided on the outer side of the water-impervious rubber body, and a barrel spring made of superelastic alloy is provided on the inner side. The water-impervious packer device is characterized in that it is shielded from both front and back surfaces by a different-diameter cylindrical body made of an outer net-like superelastic alloy material and an inner superelastic alloy barrel spring. Since the water rubber body is sandwiched and supported, it deforms supple, supplely self-restoring, works to hold the expanded form easily and reliably, can reliably shut off water, and has a measuring part. It can be securely fixed. Thus, the conventional apparatus related to the air compressor as shown by the chain line in FIG. 1 can be omitted, and the groundwater flow measuring device is inexpensive, resource-saving, easy to handle, and convenient.

ボーリング孔３内に挿入した本発明に係る測定部４に、昇降駆動部５０、制御部５５、コンピュータ６０（本発明に係る第１の実施例では鎖線表示のエアーコンプレッサー７０関係の装置は不要である。）を加えて成る地下水流測定装置１の一実施形態の構成図である。In the measuring unit 4 according to the present invention inserted into the borehole 3, the lifting drive unit 50, the control unit 55, and the computer 60 (in the first embodiment according to the present invention, an apparatus related to the air compressor 70 of the chain line display is unnecessary. It is a block diagram of one Embodiment of the groundwater flow measuring apparatus 1 which adds. 図２（ａ）は、本発明に係る第１の実施例のパッカー装置１０の断面Ａ−Ｏ−Ａの縦断面図であり、図２（ｂ）は、本発明に係る第１の実施例のパッカー装置１０の断面Ｂ−Ｂの横断面図である。FIG. 2A is a longitudinal sectional view of the section A-O-A of the packer device 10 of the first embodiment according to the present invention, and FIG. 2B is a first embodiment of the present invention. It is a cross-sectional view of section BB of the packer device 10 of FIG. 図３（ａ）は、本発明の網状の第１の異径円筒体１１の正面図であり、図３（ｂ）は、第１の異径円筒体１１の金属細線網組素材１２ａの正面図であり、図３（ｃ）は、菱形抜き孔素材１２ｂの正面図であり、図３（ｄ）は、第１の異径円筒体１１の側面図である。3A is a front view of the net-like first different-diameter cylindrical body 11 of the present invention, and FIG. 3B is a front view of the metal thin wire netting material 12a of the first different-diameter cylindrical body 11. 3 (c) is a front view of the diamond-shaped hole material 12b, and FIG. 3 (d) is a side view of the first different-diameter cylindrical body 11. 本発明に係る第１の遮水ゴム体１６の外観斜視図（一部破断）である。It is an external appearance perspective view (partially fractured) of the 1st water shielding rubber body 16 which concerns on this invention. 図５（ａ）は、第１の遮水ゴム体１６の正面図（一部断面）であり、図５（ｂ）は、第１の遮水ゴム体１６の断面D-Dの横断面図である。FIG. 5A is a front view (partial cross section) of the first water-impervious rubber body 16, and FIG. 5B is a cross-sectional view of a cross section DD of the first water-impervious rubber body 16. FIG. . 図６（ａ）は、押さえコイルばね２４の正面図である。図６（ｂ）は、押さえコイルばね２４の側面図である。FIG. 6A is a front view of the holding coil spring 24. FIG. 6B is a side view of the holding coil spring 24. 本発明に係る第２実施例のパッカー装置３０の正面図である。It is a front view of the packer apparatus 30 of 2nd Example which concerns on this invention. 図８（ａ）は、本発明に係るシール部材３６の正面図であり、図８（ｂ）は、シール部材３６の側面図である。FIG. 8A is a front view of the seal member 36 according to the present invention, and FIG. 8B is a side view of the seal member 36. 本発明に係る第３実施例のパッカー装置８０の正面図（一部断面）である。It is a front view (partial cross section) of the packer apparatus 80 of 3rd Example which concerns on this invention. 本発明に係る第３実施例のパッカー装置８０断面E-Eの断面図である。It is sectional drawing of the packer apparatus 80 cross section EE of 3rd Example which concerns on this invention. 本発明に係る第２の遮水ゴム体８６の外観斜視図（一部破断）である。It is an external appearance perspective view (partially fractured) of the 2nd water-impervious rubber body 86 which concerns on this invention. 本発明に係る第４実施例のパッカー装置１１０の正面図（一部断面）である。It is a front view (partial cross section) of the packer apparatus 110 of 4th Example based on this invention. 本発明に係るたる形ばね１1１の縦断面図である。It is a longitudinal cross-sectional view of the barrel spring 11 according to the present invention.

本発明の実施をするための形態について図面を参照して説明する。 An embodiment for carrying out the present invention will be described with reference to the drawings.

図１において、岩盤等の地盤２に掘削したボーリング孔壁の崩壊を防ぐためにボーリング孔３内にケーシングチューブ３ａを挿入し、そのケーシングチューブ３ａの下方端部に螺合等により接続させたストレーナーチューブ３ｂを設け、これらのケーシングチューブ３ａ内から、それに続くストレーナチューブ３ｂ内に、本発明に係る測定部４を配置させる。この測定部４は、地上に配設した昇降駆動部３０、制御部３５、コンピュータ６０（本発明に係る実施例では鎖線表示のエアーコンプレッサー７０関係の装置は不要である。）とで、一実施形態としての地下水流測定装置１の構成図を示している。 In FIG. 1, in order to prevent the collapse of the borehole wall excavated in the ground 2 such as rock, a strainer tube is inserted into the borehole 3 and connected to the lower end of the casing tube 3a by screwing or the like. 3b is provided, and the measuring unit 4 according to the present invention is arranged from the inside of the casing tube 3a to the strainer tube 3b following the casing tube 3a. The measurement unit 4 is implemented with the elevating drive unit 30, the control unit 35, and the computer 60 (an apparatus related to the air compressor 70 indicated by a chain line is not necessary in the embodiment according to the present invention). The block diagram of the groundwater flow measuring apparatus 1 as a form is shown.

次に、地下水Ｗの流速、流向を測定する作業について説明する。まず、ボーリング孔３内に測定部４を吊り下ろし、所定の深度になった時に、測定部４に設けられた遮水用パッカー装置１０が、しばらくして自動的に膨張し落ち着くのを待ってから、所要の深度位置に測定部４を固定し、遮水用パッカー装置１０にて、地下水Ｗを上部水Ｗ１と下部水Ｗ２に区分けしていて、地下水Ｗの上部水Ｗ１の影響を遮断して、下部水Ｗ２部分の、例えば、従来開示されている流速、流向センサー４０等（計画されている各種のセンサー）により計測することが出来る。 Next, the operation | work which measures the flow velocity and flow direction of groundwater W is demonstrated. First, the measurement unit 4 is suspended in the boring hole 3, and when a predetermined depth is reached, the water-impervious packer device 10 provided in the measurement unit 4 waits for an automatic expansion and settling after a while. Then, the measurement unit 4 is fixed at a required depth position, and the groundwater W is divided into the upper water W1 and the lower water W2 by the water shielding packer device 10, and the influence of the upper water W1 of the groundwater W is cut off. The lower water W2 portion can be measured by, for example, a conventionally disclosed flow velocity, flow direction sensor 40, etc. (various planned sensors).

ここで例えば、流速、流向センサー４０に直交する方向から一様な地下水流があるとすると、熱伝達特性等により、流速が大きい場合には温度上昇が低く抑えられ、逆に流速が小さい場合には高くなります。また、流れに面している位置では温度は低くなり、流れの反対側では高くなります。これらの事実により流速、流向センサー４０内発熱部４１（図示せず）、及びその近傍での温度上昇や円周方向温度分布を用いて地下水の流動状態を計測することが出来る。これらの取得されるデーターは制御部５５に転送され、その制御部５５において各深度毎の地下水Ｗの流速と流向を算出する。コンピュータ６０のディスプレイ上に各深度の地下水Ｗ２ひいては地下水Ｗの流速と流向が表示される。 Here, for example, if there is a uniform groundwater flow from the direction perpendicular to the flow velocity and flow direction sensor 40, the temperature rise is suppressed low when the flow velocity is large due to heat transfer characteristics, and conversely when the flow velocity is small. Will be higher. Also, the temperature is low at the position facing the flow and high at the other side of the flow. Due to these facts, the flow state of groundwater can be measured using the flow velocity, the heat generating part 41 (not shown) in the flow direction sensor 40, and the temperature rise and circumferential temperature distribution in the vicinity thereof. These acquired data are transferred to the control unit 55, and the control unit 55 calculates the flow velocity and the flow direction of the groundwater W for each depth. On the display of the computer 60, the groundwater W2 at each depth, and thus the flow velocity and direction of the groundwater W are displayed.

次に、測定部４を固定する第１の実施例の遮水用パッカー装置１０は膨張した状態で、測定部４を順次所定の深度に半強制的に昇降移動させて、上記と同様にして、ボーリング孔３内のケーシングチューブ３ａ内及びそれに続くストレーナチューブ３ｂ内にて、測定部４を強制的に吊り下ろし移動させて、所定の深度になった時に、測定部４に設けられた第１の実施例の遮水用パッカー装置１０が、自動的に膨張し落ち着くのを待ってから、所要の深度位置に測定部４を固定し、第１の実施例の遮水用パッカー装置１０に区分された地下水Ｗの内の下部水Ｗ２内に設けられたセンサー４０（例えば地下水圧センサー、水質センサー、水流、水向センサー等）にて、下部水Ｗ２ひいては地下水Ｗにおける地下水位や地下水の流れる速さや流れる方向等を確認する基礎データを得ることが出来る。 Next, in the expanded state, the water-impervious packer device 10 of the first embodiment for fixing the measuring unit 4 is moved semi-forcibly up and down sequentially to a predetermined depth in the same manner as described above. In the casing tube 3a in the boring hole 3 and in the strainer tube 3b subsequent thereto, the measuring unit 4 is forcibly suspended and moved, and when the predetermined depth is reached, the first provided in the measuring unit 4 After waiting for the water-impervious packer device 10 of the present embodiment to automatically expand and settle, the measuring unit 4 is fixed at a required depth position, and is divided into the water-impervious packer device 10 of the first embodiment. The sensor 40 (for example, a groundwater pressure sensor, a water quality sensor, a water flow, a water direction sensor, etc.) provided in the lower water W2 in the groundwater W that has been generated, and the groundwater level in the lowerwater W2 and thus the groundwater W and the flow speed of the groundwater. Pods flowing It is possible to obtain the basic data to confirm the direction and the like.

図２（ａ）は、本発明に係る第１の実施例の遮水用パッカー装置１０の断面Ａ−Ｏ−Ａの縦断面図であり、図２（ｂ）は、本発明に係る第１の実施例の遮水用パッカー装置１０の断面Ｂ−Ｂの横断面図である。図１、図２を参照して、測定部４において、網状の第１の異径円筒体１１の内側に第１の遮水ゴム体１６を挿入し、この遮水ゴム体１６の両端部のボス部２１に網状の第１の異径円筒体１１の両端部のボス部１５を重ねて、ケース本体（支持パイプ）５に設けられた上下二組の取付用の溝６、６に、前記両端部の重ねたボス部２１とボス部１５とを嵌め込んで、更に、その表面に押さえコイルばね２４、２４を組込んで、第１の実施例の遮水用パッカー装置１０が、取り付けられる。尚、ケース本体（支持パイプ）５は、合成樹脂製でも金属製でも良い。 FIG. 2A is a longitudinal sectional view of a cross section A-O-A of the water shielding packer device 10 of the first embodiment according to the present invention, and FIG. 2B is a first sectional view according to the present invention. It is a cross-sectional view of the cross section BB of the water-impervious packer device 10 of the embodiment. With reference to FIGS. 1 and 2, in the measurement unit 4, the first water-impervious rubber body 16 is inserted inside the net-like first different-diameter cylindrical body 11, and the both ends of the water-impervious rubber body 16 are inserted. The boss portions 15 at both ends of the net-like first different diameter cylindrical body 11 are overlapped on the boss portion 21, and the upper and lower sets of mounting grooves 6, 6 provided on the case body (support pipe) 5 are The water shielding packer device 10 of the first embodiment is attached by fitting the boss portion 21 and the boss portion 15 which are overlapped at both ends, and further incorporating the pressing coil springs 24, 24 on the surface thereof. . The case body (support pipe) 5 may be made of synthetic resin or metal.

図３（ａ）は、本発明に係る超弾性合金製の網状素材から成る第１の異径円筒体１１の正面図であり、図３（ｄ）は、超弾性合金製の網状素材から成る第１の異径円筒体１１の側面図である。第１の異径円筒体１１を形成する網状の超弾性合金製の素材の、超弾性合金としては、チタンとニッケルの合金や、鉄―マンガン―ケイ素合金などが考えられる。網状の例として、図３（ｂ）は、網状の第１の異径円筒体１１の超弾性合金製の金属細線１３ａを用いた網組素材１２ａの正面図の例であり、図３（ｃ）は、菱形抜き孔１３ｂを有する超弾性合金板を用いた素材１２ｂの正面図の例である。但し、網状の例としては、菱形網組や菱形抜き孔等に限定されるものではなく、他の種々の形が考えられることは勿論である。 FIG. 3A is a front view of the first different-diameter cylindrical body 11 made of a superelastic alloy net-like material according to the present invention, and FIG. 3D is made of a superelastic alloy net-like material. 3 is a side view of the first different-diameter cylindrical body 11. FIG. As the superelastic alloy of the reticulated superelastic alloy material forming the first different-diameter cylindrical body 11, an alloy of titanium and nickel, an iron-manganese-silicon alloy, or the like can be considered. As an example of a net-like shape, FIG. 3B is an example of a front view of a netting material 12a using a metal thin wire 13a made of a superelastic alloy of a net-like first different-diameter cylindrical body 11, and FIG. ) Is an example of a front view of the material 12b using a superelastic alloy plate having a diamond-shaped hole 13b. However, examples of the mesh shape are not limited to the rhombus net assembly, the diamond-shaped hole, and the like, and it is needless to say that various other shapes can be considered.

図３を参照して、網状の第１の異径円筒体１１は、超弾性合金製の網状の円筒体を、必要に応じて電解研磨或いは化学研磨を施し、内側に異径円筒体の成形型の中子を挿入させ、外側を成形外型にて挟持して、所要の熱処理を施して、両端部にボス部１５，１５を有し、中央部が太鼓状突部１４の網状の第１の異径円筒体１１を形成して成る。 Referring to FIG. 3, a net-like first different-diameter cylindrical body 11 is obtained by subjecting a net-like cylindrical body made of a superelastic alloy to electrolytic polishing or chemical polishing as necessary, and forming a cylindrical body having a different diameter inside. The core of the mold is inserted, the outside is clamped by a molded outer mold, the required heat treatment is performed, bosses 15 and 15 are provided at both ends, and the central part of the drum-like protrusion 14 is the net-like first. A cylindrical body 11 having a different diameter is formed.

図４は、本発明に係る第１の遮水ゴム体１６の外観斜視図（一部破断）である。第１の遮水ゴム体１６は、天然ゴムや、合成ゴムや軟質プラスチック等の柔軟で弾性、且つ、気密性、水密性を有する素材より形成されている。第１の遮水ゴム体１６は、内部に複数（ここでは６個）の補強リブ１７を有し、各補強リブ１７の中央部には凸部１８が形成されており、当然その両側は凹部１９，１９が形成されている。そして、外側には、太鼓状突部２０と、両端部にボス部２１、２１が形成されて成る。この一方のボス部２１から太鼓状突部２０を経て他方のボス部２１までの第１の遮水ゴム体１６の輪郭は、膨張時の形態の前記異径円筒体１１の内側に嵌り込む形状となっている。 FIG. 4 is an external perspective view (partially broken) of the first water-impervious rubber body 16 according to the present invention. The first water-impervious rubber body 16 is formed of a material that is flexible, elastic, airtight, and watertight, such as natural rubber, synthetic rubber, or soft plastic. The first water-impervious rubber body 16 has a plurality (six in this case) of reinforcing ribs 17 inside, and a convex portion 18 is formed at the center of each reinforcing rib 17, and naturally both sides are concave. 19 and 19 are formed. And on the outer side, a drum-shaped protrusion 20 and bosses 21 and 21 are formed at both ends. The contour of the first water-impervious rubber body 16 from the one boss portion 21 through the drum-like protrusion 20 to the other boss portion 21 is a shape that fits inside the different-diameter cylindrical body 11 in the expanded state. It has become.

第１の遮水ゴム体１６は、内部に複数（ここでは６個）の補強リブ１７を有し、各補強リブ１７の中央部には凸部１８が形成されており、その両側には凹部１９，１９が形成されていることは前述した。これは、図２（ｂ）、図５（ｂ）に示すように、各々補強リブ１７、１７とケース本体５とにて区画された各内部空間２２ａ、２２ｂ、２２ｃ、２２ｄ、２２ｅ、２２ｆが、各々の凹部１９，１９にて各空間が連通しており、各空間内の圧力の偏りが無い構造と成っていると共に、複数の補強リブ１７、１７は第１の遮水ゴム体１６の膨張時の形態を保持する働きがある。即ち、第１の遮水ゴム体１６の太鼓状突部２０とこれに続く斜面部を形成する面に直角に設けてある内側の補強リブ１７、１７により、元の形状を保とうとする働き（補強リブ１７による変形防止の作用）により、第１の遮水ゴム体１６が外部から加えられた力により変形しても、太鼓状突部２０とこれに続く斜面部を形成する面を含む第１の遮水ゴム体１６が膨張して元の形状に回復する。 The first water-impervious rubber body 16 has a plurality (six in this case) of reinforcing ribs 17 inside, and a convex portion 18 is formed at the center of each reinforcing rib 17, and concave portions are formed on both sides thereof. As described above, 19 and 19 are formed. As shown in FIGS. 2B and 5B, each of the internal spaces 22a, 22b, 22c, 22d, 22e, and 22f partitioned by the reinforcing ribs 17 and 17 and the case body 5 is provided. The respective recesses 19 and 19 communicate with each other, have a structure in which the pressure in each space is not biased, and the plurality of reinforcing ribs 17 and 17 are formed of the first water-impervious rubber body 16. It has the function of maintaining the form when inflated. That is, the function of trying to keep the original shape by the drum-shaped protrusion 20 of the first water-impervious rubber body 16 and the inner reinforcing ribs 17, 17 provided at right angles to the surface forming the sloped portion that follows ( Even if the first water-impervious rubber body 16 is deformed by a force applied from the outside due to the deformation-preventing action by the reinforcing ribs 17, the first rib including the drum-shaped protrusion 20 and the surface that forms the slope portion following the drum-shaped protrusion 20 is included. One water-impervious rubber body 16 expands and recovers to its original shape.

ケース本体（支持パイプ）５に設けられた二組の取付用の溝６、６に、両端部のボス部２１、２１と、各々これに重ねられたボス部１５、１５とを、それぞれ重ねたまま嵌め込み、更に、その表面上に図６に示す押さえコイルばね２４、２４を組込んで、第１の実施例の遮水用パッカー装置１０が、上下２個所に確実に、取り付けられていることは前述した。このために、測定部４を固定する第１の実施例の遮水用パッカー装置１０は膨張した状態で、測定部４を順次所定の深度に半強制的にボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、昇降移動させても、第１の実施例の遮水用パッカー装置１０は、表面を保護する網状の超弾性合金製の素材から成る第１の異径円筒体１１の自己復元力と共に、内側に嵌り込み複数の補強リブ１７、１７を有する第１の遮水ゴム体１６の自己復元力とを有するために、第１の実施例の遮水用パッカー装置１０は、外力により変形したとしても自己復元力が働き、膨張形態を保持する。即ち、第１の遮水ゴム体１６の太鼓状突部２０を含む表面に直角に設けてある補強リブ１７により、元の形状を保とうとする働き（補強リブ１７による変形防止の作用）により、たとえ外力にて変形しても太鼓状突部２０を含む第１の遮水ゴム体１６が膨張して元の形状に回復する。このためにボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、第１の実施例の遮水用パッカー装置１０は膨張した状態で、前記第１の異円筒体１１と、第１の遮水ゴム体１６により気密性、水密性を保持し遮水すると共に測定部４を確実に固定する。この自己復元力を有する第１の実施例の遮水用パッカー装置１０は、図１の鎖線表示されている、従来、使用していたエアーコンプレッサー７０の関係の装置が省略できて、地下水流測定装置１が安価であり省資源で、且つ、その取扱が容易となり、便利である。尚、押さえコイルばね２４は、ピアノ線やばね用鋼材等に耐腐食処理を施した弾性材料や、ばね用ステンレス線等が望ましい。 Two sets of mounting grooves 6, 6 provided in the case body (support pipe) 5 are overlapped with boss portions 21, 21 at both ends and boss portions 15, 15 respectively superimposed on the boss portions 21, 15. It fits in, and further, the presser coil springs 24 and 24 shown in FIG. 6 are assembled on the surface thereof, and the water-impervious packer device 10 of the first embodiment is securely attached to the upper and lower two places. Mentioned above. For this purpose, the water-impervious packer device 10 of the first embodiment for fixing the measuring unit 4 is in an expanded state, and the measuring unit 4 is semi-forced to a predetermined depth sequentially in the boring hole 3 or in the boring hole. Even if it is moved up and down in the casing tube 3a (including the strainer pipe 3b) provided for preventing the wall from collapsing, the water-impervious packer device 10 of the first embodiment protects the surface. To have the self-restoring force of the first water-impervious rubber body 16 fitted inside and having the plurality of reinforcing ribs 17 and 17 together with the self-restoring force of the first different-diameter cylindrical body 11 made of an elastic alloy material. Moreover, even if the water-impervious packer device 10 of the first embodiment is deformed by an external force, the self-restoring force works and maintains the expanded form. That is, the reinforcing rib 17 provided at a right angle to the surface including the drum-shaped protrusion 20 of the first water-impervious rubber body 16 serves to keep the original shape (action of preventing deformation by the reinforcing rib 17). Even if deformed by an external force, the first water-impervious rubber body 16 including the drum-like protrusion 20 expands and recovers to its original shape. For this reason, the water-impervious packer device 10 of the first embodiment has expanded in the borehole 3 or in the casing tube 3a (including the strainer pipe 3b) provided for preventing the borehole wall from collapsing. In this state, the first heterocylindrical body 11 and the first water-impervious rubber body 16 keep the airtightness and watertightness and impede the water, and securely fix the measuring unit 4. The water-impervious packer device 10 according to the first embodiment having the self-restoring force can omit the conventional device related to the air compressor 70 shown by a chain line in FIG. The apparatus 1 is inexpensive, resource-saving, easy to handle, and convenient. The holding coil spring 24 is preferably an elastic material obtained by subjecting a piano wire or spring steel material to a corrosion resistance treatment, a stainless steel wire for springs, or the like.

図７は、本発明に係る第２実施例の遮水用パッカー装置３０の正面図である。図８（ａ）は、本発明に係るシール部材３６の正面図であり、図８（ｂ）は、シール部材３６の側面図である。図７を参照して、薄板状の超弾性合金製の第２の異径円筒体３１内にスぺーサリング３７を挿入し、更に、前記第２の異径円筒体３１の両端のボス部３５、３５の内側に図８に示すシール部材３６，３６を挿入し、次に、これらのシール部材３６，３６とスぺーサリング３７を備えた状態の第２の異径円筒体３１を、ケース本体（支持パイプ）３２に被着させる。そして、このケース本体（支持パイプ）３２上に二組の取付用の溝３３、３３を形成するように、押さえリング３８ａ，３８ｂ、を止めネジ３９、３９にて固定する。そして、ケース本体（支持パイプ）３２に形成された二組の取付用の溝３３、３３内に、各々シール部材３６，３６の上に両端部のボス部３５、３５を重ねて各々嵌め込み、更に、その表面上に図６に示す押さえコイルばね２４、２４を組込んで、第２の実施例の遮水用パッカー装置３０が、上下２個所にてケース本体（支持パイプ）３２に確実に、取り付けられている。即ち、この形成されたケース本体（支持パイプ）３２上の二組の取付用の溝３３、３３内に、シール部材３６、３６の上に前記第２の異径円筒体３１の両端部のボス部３５、３５を各々重ねて嵌め込み、更に、その上から各々押さえコイルばね２４、２４を組み込んで第２実施例の遮水用パッカー装置３０が、ケース本体（支持パイプ）３２に形成されている。ところで、前記スぺーサリング３７は、ケース本体（支持パイプ）５、３２と同様に、合成樹脂製でも良いし、金属製でも良い。シール部材３６は、天然ゴムや、合成ゴムや軟質プラスチック等の柔軟で弾性、且つ、気密性、水密性を有する素材より形成されている。 FIG. 7 is a front view of the water shielding packer device 30 according to the second embodiment of the present invention. FIG. 8A is a front view of the seal member 36 according to the present invention, and FIG. 8B is a side view of the seal member 36. Referring to FIG. 7, a spacer ring 37 is inserted into a thin plate-like second elastic cylinder 31 made of superelastic alloy, and bosses 35 at both ends of the second different diameter cylinder 31 are inserted. 8 are inserted into the inside of the first and second cylindrical bodies 31 having the different diameters, which are provided with the seal members 36 and 36 and the spacer ring 37. (Support pipe) 32 is attached. Then, the pressing rings 38 a and 38 b are fixed with set screws 39 and 39 so that two sets of mounting grooves 33 and 33 are formed on the case main body (support pipe) 32. Then, in the two sets of mounting grooves 33, 33 formed in the case main body (support pipe) 32, the boss portions 35, 35 at both ends are overlapped on the seal members 36, 36, respectively, and further fitted. 6 is assembled on the surface thereof, and the water-impervious packer device 30 of the second embodiment is securely attached to the case main body (support pipe) 32 at two upper and lower positions. It is attached. That is, in the two sets of mounting grooves 33 and 33 on the formed case main body (support pipe) 32, the bosses on both ends of the second different-diameter cylindrical body 31 are placed on the seal members 36 and 36. The portions 35 and 35 are fitted in each other, and further the presser coil springs 24 and 24 are incorporated from above, respectively, so that the water shielding packer device 30 of the second embodiment is formed in the case main body (support pipe) 32. . By the way, the spacer ring 37 may be made of synthetic resin or metal like the case main bodies (support pipes) 5 and 32. The seal member 36 is formed of a material that is flexible, elastic, airtight, and watertight, such as natural rubber, synthetic rubber, or soft plastic.

この第２実施例の遮水用パッカー装置３０における第２の異径円筒体３１は、表面が薄板状の超弾性合金製の素材から成り立っているために、外力により変形してもしなやかで自己復元力が働き、第２の異径円筒体３１の中央部の太鼓状突部３４の膨張形態を保持する働きがある。このためにボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、ケース本体（支持パイプ）３２に取り付けられている第２の実施例の遮水用パッカー装置３０は膨張した状態で、表面が薄板状の超弾性合金製の素材から成る第２の異径円筒体３１とシール部材３６、３６とにより気密性、水密性を保持し遮水すると共に測定部４を確実に固定する。これにより従来、使用していたエアーコンプレッサー７０の関係の装置が省略できて、地下水流測定装置１が安価であり省資源で、且つ、その取扱が容易となり、便利である。 The second cylindrical body 31 having a different diameter in the water-impervious packer device 30 according to the second embodiment is made of a superelastic alloy material having a thin plate surface, so that it can be deformed by an external force and is self-responsive. The restoring force works, and has the function of maintaining the expanded form of the drum-like protrusion 34 at the center of the second different-diameter cylindrical body 31. For this purpose, the second body attached to the case body (support pipe) 32 in the borehole 3 or in the casing tube 3a (including the strainer pipe 3b) provided for preventing the borehole wall from collapsing. In the expanded state, the water-impervious packer device 30 of the embodiment has airtightness and watertightness by the second different-diameter cylindrical body 31 made of a superelastic alloy material having a thin plate surface and the sealing members 36 and 36. Holds and shields water and securely fixes the measuring section 4. As a result, the conventional apparatus related to the air compressor 70 can be omitted, and the groundwater flow measuring device 1 is inexpensive, resource-saving, and easy to handle.

図９は、本発明に係る第３実施例の遮水用パッカー装置８０の正面図（一部断面）である。図１０は、第３実施例の遮水用パッカー装置８０の断面図（断面Ｅ―Ｅ）である。図１１は、本発明に係る第２の遮水ゴム体８６の外観斜視図（一部破断）である。 FIG. 9 is a front view (partially cross-sectional view) of a water shielding packer device 80 according to a third embodiment of the present invention. FIG. 10 is a cross-sectional view (cross-section EE) of the water-impervious packer device 80 of the third embodiment. FIG. 11 is an external perspective view (partially broken) of the second water-impervious rubber body 86 according to the present invention.

図１１を参照して、第２の遮水ゴム体８６は、天然ゴムや、合成ゴムや軟質プラスチック等の柔軟で弾性、且つ、気密性、水密性を有する素材より形成されている。第２の遮水ゴム体８６は、前記第１の遮水ゴム体１６の内部に設けられていた複数（ここでは６個）の補強リブ１７が設けられていない形状である。そして、外側には、太鼓状突部９０と、両端部にボス部９１、９１が形成されて成る。この一方のボス部１２１から太鼓状突部９０を経て他方のボス部９１までの第２の遮水ゴム体８６の輪郭は、膨張時の形態の前記異径円筒体１１の内側に嵌り込む形状となっている。第２の遮水ゴム体８６の内側の輪郭に、膨張時の形態の網状の第３の異径円筒体１０１の外側の輪郭が嵌り込む形状となっている。 Referring to FIG. 11, the second water-impervious rubber body 86 is made of a material having flexibility, elasticity, airtightness, and watertightness such as natural rubber, synthetic rubber, or soft plastic. The second water-impervious rubber body 86 has a shape in which the plurality of (here, six) reinforcing ribs 17 provided in the first water-impervious rubber body 16 are not provided. A drum-shaped protrusion 90 and bosses 91 and 91 are formed at both ends on the outside. The contour of the second water-impervious rubber body 86 from the one boss portion 121 to the other boss portion 91 through the drum-shaped protrusion 90 is a shape that fits inside the different-diameter cylindrical body 11 in the expanded state. It has become. The inner contour of the second water-impervious rubber body 86 has a shape in which the outer contour of the net-like third different-diameter cylindrical body 101 in the expanded state is fitted.

網状の超弾性合金製の素材から成る第１の異径円筒体１１内に、図１１に示す第２の遮水ゴム体８６を挿入し、更に、この第２の遮水ゴム体８６内に網状の超弾性合金製の素材から成る第３の異径円筒体１０１を挿入し、同時に、網状の第１の異径円筒体１１の両端部のボス部１５、１５内に、各々第２の遮水ゴム体８６のボス部９１、９１と、網状の超弾性合金製の素材から成る第３の異径円筒体１０１の各々のボス部１０５、１０５とを内側に順に重ねて成る。そして、第３の異径円筒体１０１は、図３（ａ）の網状の第１の異径円筒体１０の正面図において、第１の異径円筒体１１を第３の異径円筒体１０１に、太鼓状突部１４を太鼓状突部１０４に、ボス部１５をボス部１０５と読み替える。そして、第３の異径円筒体１０１の外形寸法は、第１の異径円筒体１０の内側寸法に対して、間に挟まれる前記第２の遮水ゴム体８６の肉厚分だけ小さい寸法にて制作されている。即ち、第２の遮水ゴム体８６の外側に自己復元力を有する網状の超弾性合金製の素材から成る第１の異径円筒体１１を被せ、内側に自己復元力を有する網状の超弾性合金製の素材から成る第３の異径円筒体１０１を挿入して成り、この第２の遮水ゴム体８６を外と内とから自己復元力を有する網状の超弾性合金製の素材により挟持したサンドイッチ構造を成し、確実に第２の遮水ゴム体８６が膨張状態を保つように、各部材は成形されている。 A second water-impervious rubber body 86 shown in FIG. 11 is inserted into the first different-diameter cylindrical body 11 made of a net-like superelastic alloy material, and further into the second water-impervious rubber body 86. The third different-diameter cylindrical body 101 made of a net-like superelastic alloy material is inserted, and at the same time, the second different-diameter cylinder body 11 is inserted into the bosses 15 and 15 at both ends of the first net-like different-diameter cylinder 11 respectively. The boss portions 91 and 91 of the water-impervious rubber body 86 and the boss portions 105 and 105 of the third different-diameter cylindrical body 101 made of a net-like superelastic alloy material are sequentially stacked inward. The third different diameter cylindrical body 101 is the same as the first different diameter cylindrical body 101 in the front view of the net-like first different diameter cylindrical body 10 shown in FIG. Furthermore, the drum-like protrusion 14 is replaced with the drum-like protrusion 104, and the boss 15 is replaced with the boss 105. The outer dimension of the third different diameter cylindrical body 101 is smaller than the inner dimension of the first different diameter cylindrical body 10 by the thickness of the second water shielding rubber body 86 sandwiched therebetween. It is produced in. In other words, the first water-impervious rubber body 86 is covered with the first different-diameter cylindrical body 11 made of a reticulated superelastic alloy material having a self-restoring force, and the reticulated superelasticity having a self-restoring force is covered inside. A third cylindrical body 101 having a different diameter made of an alloy material is inserted, and the second water-impervious rubber body 86 is sandwiched by a reticulated superelastic alloy material having a self-restoring force from outside and inside. Each member is formed so that the second water-impervious rubber body 86 is maintained in an expanded state.

そして、ケース本体（支持パイプ）８２に設けられた二組の取付用の溝８３、８３内の各々に、まず、シール部材３６、３６を組み込み、更に、その上に、網状の超弾性合金製の素材から成るの第３の異径円筒体１０１の各々のボス部１０５、１０５を、その上に、各々第２の遮水ゴム体８６の各々のボス部９１、９１を、その上に、網状の第１の異径円筒体１１の両端部の各々のボス部１５、１５を順に重ねたまま嵌め込み、更に、その表面に各々押さえコイルばね２４、２４を組込んで、第３の実施例の遮水用パッカー装置８０が、ケース本体（支持パイプ）８２に取り付けられている。そして、第２の遮水ゴム体８６は、天然ゴムや、合成ゴムや軟質プラスチック等の柔軟で弾性、且つ、気密性、水密性を有する素材より形成されている。ケース本体（支持パイプ）８２は、ケース本体（支持パイプ）５、３２と同様に、合成樹脂製でも良いし、金属製でも良い。 The seal members 36 and 36 are first assembled in the two sets of mounting grooves 83 and 83 provided in the case main body (support pipe) 82, and further, a mesh-like superelastic alloy is formed thereon. On the boss portions 105, 105 of the third different-diameter cylindrical body 101 made of the above material, on the boss portions 91, 91 of the second water-impervious rubber body 86, respectively, The boss portions 15 and 15 at both ends of the net-like first different-diameter cylindrical body 11 are fitted in order, and further, the holding coil springs 24 and 24 are incorporated on the surface, respectively, so that the third embodiment The water shielding packer device 80 is attached to the case main body (support pipe) 82. The second water-impervious rubber body 86 is made of a material that is flexible, elastic, airtight, and watertight, such as natural rubber, synthetic rubber, or soft plastic. The case main body (support pipe) 82 may be made of synthetic resin or metal, similar to the case main bodies (support pipes) 5 and 32.

そして、第２の遮水ゴム体８６の中央部の太鼓状突部９０は、内側から自己復元力を有する網状の超弾性合金製の素材から成る第３の異径円筒体１０１の太鼓状突部１０４に支持され、外側から自己復元力を有する網状の超弾性合金製の素材から成る第１の異径円筒体１１の太鼓状突部１４に保護され支持されている。このために、測定部４を固定する第３の実施例の遮水用パッカー装置８０は膨張した状態で、測定部４を順次所定の深度に半強制的にボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、昇降移動させても、外力を受ける第３の実施例の遮水用パッカー装置８０は、表面が自己復元力を有する第１の異径円筒体１１に保護され、支持されて、且つ、内面も自己復元力を有する第３の異径円筒体１０１に支持されており、中央部の太鼓状突部９０を含む第２の遮水ゴム体８６の膨張した形状は、外力により変形してもしなやかに確実に自己復元力が働き、膨張形態を保持する働きがある。このためにボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、ケース本体（支持パイプ）８２に設けられた第３の実施例の遮水用パッカー装置８０は膨張した状態で、第２の遮水ゴム体８６とシール部材３６、３６とにより気密性、水密性を保持し遮水すると共に、第１の異径円筒体１１と第３の異径円筒体１０１とにより測定部４を確実に固定する。よって従来、使用していたエアーコンプレッサー７０の関係の装置が省略できて、地下水流測定装置１が安価であり省資源で、且つ、その取扱が
容易となり、便利である。 The drum-like protrusion 90 at the center of the second water-impervious rubber body 86 is a drum-like protrusion of the third different-diameter cylindrical body 101 made of a net-like superelastic alloy material having a self-restoring force from the inside. It is supported by the portion 104 and is protected and supported by the drum-shaped protrusion 14 of the first different-diameter cylindrical body 11 made of a net-like superelastic alloy material having a self-restoring force from the outside. For this purpose, the water-impervious packer device 80 of the third embodiment for fixing the measuring unit 4 is in an expanded state, and the measuring unit 4 is forcibly semi-forced to a predetermined depth in the boring hole 3 or in the boring hole. The water shielding packer device 80 of the third embodiment that receives external force even when moved up and down in the casing tube 3a (including the strainer pipe 3b) provided to prevent the wall from collapsing is self-recovering. It is protected and supported by a first different-diameter cylindrical body 11 having a force, and the inner surface is also supported by a third different-diameter cylindrical body 101 having a self-restoring force. The expanded shape of the second water-impervious rubber body 86 containing, as it is deformed by an external force, has a self-restoring force that works without fail, and maintains the expanded form. For this purpose, the third embodiment provided in the case main body (support pipe) 82 in the boring hole 3 or in the casing tube 3a (including the strainer pipe 3b) provided for preventing the boring hole wall from collapsing. The example water-impervious packer device 80 in an expanded state retains air-tightness and water-tightness by the second water-impervious rubber body 86 and the seal members 36 and 36, and blocks the water, and also has a first cylindrical body having a different diameter. 11 and the third different-diameter cylindrical body 101 securely fix the measuring unit 4. Therefore, the apparatus related to the air compressor 70 which has been used conventionally can be omitted, the groundwater flow measuring apparatus 1 is inexpensive, resource-saving, and easy to handle.

図１２は、本発明に係る第４の実施例の遮水用パッカー装置１１０の正面図である。図１３は、たる形ばね１１１の縦断面図である。そして、自己復元力を有する網状の超弾性合金製の素材から成る第１の異径円筒体１１の内側に、図１１に示す第２の遮水ゴム体８６を挿入し、更に、この第２の遮水ゴム体８６の内側に、太鼓状突部９０を中心に膨張状態を保持するように、図１３に示す自己復元力を有する超弾性合金製の素材から成るたる形ばね１１１を挿入してある。そして、同時に、前記第１の異径円筒体１１の両端部のボス部１５、１５の内側に、各々第２の遮水ゴム体８６のボス部９１、９１を内部に重ね、この状態でケース本体（支持パイプ）５に設けられた上下二組の取付用の各々の溝６、６内に、それぞれ重ねたボス部９１、９１とボス部１５、１５とをこの順に嵌め込んで、更に、その表面に押さえコイルばね２４、２４を組込んで、第４の実施例の遮水用パッカー装置１１０が、ケース本体（支持パイプ）５に取り付けられている。 FIG. 12 is a front view of a water shielding packer device 110 according to a fourth embodiment of the present invention. FIG. 13 is a longitudinal sectional view of the barrel spring 111. Then, a second water-impervious rubber body 86 shown in FIG. 11 is inserted into the inside of the first different-diameter cylindrical body 11 made of a net-like superelastic alloy material having a self-restoring force. A cylindrical spring 111 made of a superelastic alloy material having a self-restoring force shown in FIG. 13 is inserted inside the water-impervious rubber body 86 so as to maintain the expanded state around the drum-shaped protrusion 90. It is. At the same time, the boss portions 91 and 91 of the second water-impervious rubber body 86 are overlapped inside the boss portions 15 and 15 at both ends of the first different-diameter cylindrical body 11, respectively, and in this state the case The boss portions 91 and 91 and the boss portions 15 and 15 which are overlapped in the respective upper and lower mounting grooves 6 and 6 provided in the main body (support pipe) 5 are fitted in this order, and further, The water shielding packer device 110 of the fourth embodiment is attached to the case main body (support pipe) 5 by incorporating the holding coil springs 24, 24 on the surface thereof.

そして、前記たる形ばね１１１において、中央の太鼓状突部１１２を含むその外形寸法が、第１の異径円筒体１１の内側寸法に対して、間に挟まれる前記第２の遮水ゴム体８６の肉厚分だけ小さい寸法にて制作されている。即ち、第２の遮水ゴム体８６の外側に自己復元力を有する網状の超弾性合金製の素材から成る第１の異径円筒体１１を被せ、内側に自己復元力を有する超弾性合金製の素材から成るたる形ばね１１１を挿入して成り、太鼓状突部９０を中心とする第２の遮水ゴム体８６を外と内とから自己復元力を有する網状の超弾性合金製の素材により成る第１の異径円筒体１１とたる形ばね１１１にて挟持されたサンドイッチ構造を成し、確実に第２の遮水ゴム体８６が膨張状態を保つように、各部材は成形されている。そして、前述した通り、第２の遮水ゴム体８６は、天然ゴムや、合成ゴムや軟質プラスチック等の柔軟で弾性、且つ、気密性、水密性を有する素材より形成されている。 In the barrel spring 111, the second water-impervious rubber body sandwiched between the outer dimensions of the central drum-shaped protrusion 112 with respect to the inner dimension of the first different-diameter cylindrical body 11. It is produced in a size that is as small as 86 wall thicknesses. That is, the second water-impervious rubber body 86 is covered with the first different-diameter cylindrical body 11 made of a net-like superelastic alloy material having a self-restoring force, and the inner side is made of a superelastic alloy having a self-restoring force. A material made of a net-like superelastic alloy having a self-restoring force from the outside to the inside of the second water-impervious rubber body 86 centered on the drum-like protrusion 90, which is formed by inserting a barrel spring 111 made of the above material. Each member is molded so that the second water-impervious rubber body 86 is surely maintained in an expanded state with a sandwich structure sandwiched between the first different-diameter cylindrical body 11 and the barrel spring 111. Yes. As described above, the second water-impervious rubber body 86 is made of a material having flexibility, elasticity, airtightness, and watertightness such as natural rubber, synthetic rubber, or soft plastic.

そして、第２の遮水ゴム体８６の中央部の太鼓状突部９０は、内側から自己復元力を有する超弾性合金製の素材から成る太鼓状突部１１２を含むたる形ばね１１１に支持され、外側から自己復元力を有する網状の超弾性合金製の素材から成る太鼓状突部１４を含む第１の異径円筒体１１に保護され支持されている。このために、測定部４を固定する第４の実施例の遮水用パッカー装置１１０は膨張した状態で、測定部４を順次所定の深度に半強制的にボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、昇降移動させても、外力を受ける第４の実施例の遮水用パッカー装置１１０は、表面が自己復元力を有する第１の異径円筒体１１に保護され、支持されて、且つ、内面も自己復元力を有するたる形ばね１１１に支持されており、中央部の太鼓状突部９０を含む第２の遮水ゴム体８６の膨張した形状は、外力により変形してもしなやかに確実に自己復元力が働き、膨張形態を保持する働きがある。このためにボーリング孔３内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ３ａ（ストレーナパイプ３ｂを含む）内にて、ケース本体（支持パイプ）５に設けられた第４の実施例の遮水用パッカー装置１１０は膨張した状態で、第１の異径円筒体１１と第２の遮水ゴム体８６とにより気密性、水密性を保持し遮水すると共に、測定部４を確実に固定する。よって従来、使用していたエアーコンプレッサー７０の関係の装置が省略できて、地下水流測定装置１が安価であり省資源で、且つ、その取扱が容易となり、便利である。 The drum-like protrusion 90 at the center of the second water-impervious rubber body 86 is supported by a barrel spring 111 including a drum-like protrusion 112 made of a superelastic alloy material having a self-restoring force from the inside. Protected and supported by a first cylindrical body 11 having a different diameter including a drum-shaped protrusion 14 made of a net-like superelastic alloy material having a self-restoring force from the outside. For this purpose, the water-impervious packer device 110 of the fourth embodiment for fixing the measuring unit 4 is in an expanded state, and the measuring unit 4 is forcibly semi-forced to a predetermined depth in the boring hole 3 or in the boring hole. The water-proof packer device 110 of the fourth embodiment that receives external force even when moved up and down in the casing tube 3a (including the strainer pipe 3b) provided for preventing the wall from collapsing is self-recovering. The second cylindrical body 11 is protected and supported by a first cylindrical body 11 having a different diameter and is supported by a barrel spring 111 having a self-restoring force on the inner surface, and includes a drum-shaped protrusion 90 at the center. The inflated shape of the water-insulating rubber body 86 has a function of maintaining its expanded form by steadily and surely acting as a self-restoring force even when deformed by an external force. For this purpose, the fourth embodiment provided in the case body (support pipe) 5 in the borehole 3 or in the casing tube 3a (including the strainer pipe 3b) provided for preventing the borehole wall from collapsing. The example water-impervious packer device 110 is in an expanded state to maintain airtightness and watertightness by the first different-diameter cylindrical body 11 and the second water-impervious rubber body 86, and to prevent the measurement unit 4 from being sealed. Securely fix. Therefore, the apparatus related to the air compressor 70 which has been used conventionally can be omitted, the groundwater flow measuring apparatus 1 is inexpensive, resource-saving, and easy to handle.

本発明は、土木工事や防災工事などに十分に役立つものである。 The present invention is sufficiently useful for civil engineering work and disaster prevention work.

なお、本発明は前述した実施形態に限るものではなく、その趣旨を逸脱しない範囲での種々の変形実施が可能である。 The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

２ 地盤
３ ボーリング孔
３ａ ケーシングチューブ
３ｂ ストレーナパイプ
４ 測定部
５、３２、８２ 支持パイプ（ケース本体）
６，３３、８３ 溝
１１，３１、１０１ 異径円筒体
１４，３４、９０、１０４ 太鼓状突部
１６、８６ 遮水ゴム体
１７ 補強リブ
２４ 押さえコイルばね
３６ シール部材。
2 Ground 3 Boring hole 3a Casing tube 3b Strainer pipe 4 Measuring part 5, 32, 82 Support pipe (case body)
6, 33, 83 Grooves 11, 31, 101 Different diameter cylindrical bodies 14, 34, 90, 104 Drum-like protrusions 16, 86 Water shielding rubber body 17 Reinforcement rib 24 Pressing coil spring 36 Sealing member.

Claims (4)

地中に掘削したボーリング孔内、又は、ボーリング孔壁の崩壊防止用に設けられたケーシングチューブ内に、挿入される測定部の支持パイプに取り付けて膨張させて前記ボーリング孔内、又は、前記ケーシングチューブ内を遮水する遮水用パッカー装置において、超弾性合金製の異径円筒体を備えたことを特徴とする遮水用パッカー装置。 In the borehole drilled in the ground or in the casing tube provided for preventing the borehole wall from collapsing, it is attached to the support pipe of the measuring unit to be inserted and expanded to the inside of the borehole or the casing. A water shielding packer device for shielding water in a tube, comprising a different diameter cylindrical body made of a super elastic alloy. 外側に超弾性合金製の網状素材から成る異径円筒体と、内側に複数の補強リブを有する遮水ゴム体とを備えたことを特徴とする遮水用パッカー装置。   A water shielding packer device comprising: a cylindrical body of a different diameter made of a net-like material made of a superelastic alloy on the outside; and a water shielding rubber body having a plurality of reinforcing ribs on the inside. 遮水ゴム体を外側と、内側とから超弾性合金製の網状素材から成る異径円筒体により挟持してなることを特徴とする遮水用パッカー装置。 A water-impervious packer device, characterized in that a water-impervious rubber body is sandwiched by a different-diameter cylindrical body made of a net-like material made of a superelastic alloy from outside and inside. 遮水ゴム体の外側に超弾性合金製の網状素材から成る異径円筒体を設け、内側に超弾性合金製の素材から成るたる形ばねを設けてなることを特徴とする遮水用パッカー装置。
A water-impervious packer device comprising a cylindrical body made of a superelastic alloy and a barrel spring made of a superelastic alloy material provided inside the water-impervious rubber body with a different diameter cylindrical body made of a superelastic alloy mesh material. .

Images