JPH0439612B2 - - Google Patents
Info
- Publication number
- JPH0439612B2 JPH0439612B2 JP58070239A JP7023983A JPH0439612B2 JP H0439612 B2 JPH0439612 B2 JP H0439612B2 JP 58070239 A JP58070239 A JP 58070239A JP 7023983 A JP7023983 A JP 7023983A JP H0439612 B2 JPH0439612 B2 JP H0439612B2
- Authority
- JP
- Japan
- Prior art keywords
- packer
- borehole
- cracks
- measuring device
- hole
- 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.)
- Expired - Lifetime
Links
- 239000012778 molding material Substances 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010137 moulding (plastic) Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000004575 stone Substances 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
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
- E21B47/098—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes using impression packers, e.g. to detect recesses or perforations
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
- Geophysics And Detection Of Objects (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Description
【発明の詳細な説明】
この発明は、ボアホールの壁面に存在する亀裂
の走向、傾斜及び分布状態等を測定する方法とそ
の装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for measuring the direction, slope, distribution, etc. of cracks existing on the wall surface of a borehole.
一般に岩盤内の節理、層理又は亀裂等の分布や
走向、傾斜の実態を知ることは、岩盤構造物の設
計上、或いは地質構造を探査する上で極めて重要
なこととされている。 In general, knowing the distribution, strike, and inclination of joints, bedding, or cracks in rock is extremely important when designing rock structures or exploring geological structures.
しかし、上記亀裂等の形態を正確に知る手段と
して、従来はボアホールテレビカメラによる孔壁
面の撮影が行われていたが、この方法では、撮影
後の画像処理やカメラの取扱操作が複雑である
上、ボアホール内が泥水で満たされている場合と
か、撮影位置より上方に湧水がある場合などに
は、その使用ができず、更にテレビカメラでは既
存の開口亀裂が映写されるに止どまり、閉じた亀
裂の観察は不可能である等、猶岩盤の真の形態を
正確に掌握し得ないという問題点が残されてい
た。 However, as a means of accurately determining the form of the above-mentioned cracks, etc., conventionally, the borehole wall surface was photographed using a borehole television camera, but this method requires complicated image processing and camera handling operations after photographing. However, if the borehole is filled with muddy water or if there is spring water above the shooting position, it cannot be used, and the TV camera will only show the existing opening crack and will not close it. However, there remained the problem that it was impossible to accurately grasp the true morphology of the rock, such as the fact that it was impossible to observe the cracks.
そこで本発明者は、膨縮可能な型採り用のパツ
カーの外周面に型採り材を被着自在とし、更に該
パツカーの下方に孔曲り測定器を装着してなる亀
裂測定装置を案出し、該装置のパツカーをボアホ
ールの測定箇所に位置せしめた上、これを膨張し
てその型採り材を壁面に一定時間強圧するととも
に、その引揚げ時に上記孔曲り測定器によつて、
型採り箇所におけるボアホールの方位と角度を計
測して、亀裂等の形態を正確、かつ迅速に測定し
得るようにしたものである。 Therefore, the present inventor devised a crack measuring device in which a molding material can be freely attached to the outer peripheral surface of an expandable molding packer, and a hole bending measuring device is attached below the packer. After positioning the packer of the device at the measuring point of the borehole, it expands and presses the molding material strongly against the wall surface for a certain period of time, and when it is pulled up, the hole bending measuring device is used to measure the shape of the hole.
By measuring the orientation and angle of the borehole at the location where the mold is made, it is possible to accurately and quickly measure the morphology of cracks, etc.
以下、本発明における装置の一実施例を図面に
基づいて詳述すると、１は硬質ゴム等からなり、
内部に圧入される流体によつて膨縮可能なパツカ
ー、２は上記パツカーの外周面に披着自在な可塑
性を有するゴム又はプラスチツクチユーブなどの
型採り材、又３は上記パツカー１の下端に取付け
られる孔曲り測定器、更に４は孔外の高圧ポンプ
Ｐ、オイルタンクＴ及び圧力計Ｇなどからなる加
圧機構５とパツカー１を連結する高圧ホースであ
る。 Hereinafter, one embodiment of the device according to the present invention will be described in detail based on the drawings. 1 is made of hard rubber or the like;
A packer that can be expanded and contracted by a fluid pressurized into the packer; 2 is a molding material such as a rubber or plastic tube having plasticity that can be freely attached to the outer circumferential surface of the packer; and 3 is attached to the lower end of the packer 1. A high-pressure hose 4 connects the pressurizer 1 to a pressurizing mechanism 5 consisting of a high-pressure pump P, an oil tank T, a pressure gauge G, etc. outside the hole.
尚、図中６は上記パツカー１の主体構成部材
１′が磁性材である場合に、該パツカーと孔曲り
測定器間に介装される非磁性ロツドを示す。 In the figure, 6 indicates a non-magnetic rod interposed between the packer and the hole bending measuring device when the main component 1' of the packer 1 is made of a magnetic material.
次に、上記装置を使用した本発明方法の具体例
について述べると、本測定装置のパツカー１にプ
ラスチツクチユーブからなる型採り材２を被嵌
し、トーチランプ等で全体を加熱収縮せしめて、
該型採り材２をパツカー外周面に密着させた上、
該装置をボアホール内の所定の位置に吊下セツト
し、高圧ポンプＰを介してタンクＴ内のオイルを
パツカー１内に流送し、該パツカーを膨張させ
て、その外周面に被着された型採り材２を孔壁面
に一定時間（約30〜50分間）強く圧接する。しか
る後上記パツカー１の内圧を解除して装置全体を
孔外へ引揚げ、上記型採り材２に賦型された石理
や亀裂等の走向、傾斜及びその分布を測定するも
のである。 Next, a specific example of the method of the present invention using the above-mentioned device will be described. A molding material 2 made of a plastic tube is fitted onto the packer 1 of the measuring device, and the whole is heated and shrunk using a torch lamp or the like.
After bringing the molding material 2 into close contact with the outer peripheral surface of the pack car,
The device is suspended at a predetermined position in the borehole, and the oil in the tank T is flowed into the packer 1 through the high-pressure pump P, and the oil is expanded and coated on the outer circumferential surface of the packer. The molding material 2 is strongly pressed against the hole wall surface for a certain period of time (approximately 30 to 50 minutes). Thereafter, the internal pressure of the packer 1 is released, the entire device is pulled out of the hole, and the strike, inclination, and distribution of stone textures, cracks, etc. formed in the molding material 2 are measured.
一方、上記装置を孔外へ取出す際に、パツカー
１の下端に取付けられている孔曲り測定器３を作
動させて、上記型採り位置におけるボアホールの
方位と角度を計測記録し、これにより型採り材２
から測定された亀裂の真の走向、傾斜を算定する
ものである。 On the other hand, when taking the device out of the hole, the hole bending measuring device 3 attached to the lower end of the packer 1 is activated to measure and record the direction and angle of the borehole at the molding position. Material 2
This method calculates the true direction and slope of the crack measured from
以上述べたように本発明は、ボアホールにおけ
る亀裂等の実態を簡単な操作で極めて正確に測定
出来るため、これをそのまゝ地盤構造物の設計上
の資料、或いは地質構造の探査上の資料としてそ
れぞれ有効に利用できる他、水圧破砕法による地
山の三次元的応力測定に必要な新旧亀裂の形態調
査にも活用できるものである。 As described above, the present invention allows for extremely accurate measurement of the actual state of cracks, etc. in boreholes with simple operations, so this can be used directly as materials for designing geological structures or for exploring geological structures. In addition to being able to use each effectively, it can also be used to investigate the morphology of old and new cracks, which is necessary for three-dimensional stress measurements in rock formations using hydraulic fracturing methods.
更に又、本発明によれば、パツカー１を膨張し
その外周面に披着された型採り材２を孔壁面に強
く押圧するものであるから、その圧力によつて閉
じられた既存の亀裂を押拡げ、或いは新たに発生
する亀裂をも型採りすることが可能となり、単に
ボアホール壁面を撮影するテレビカメラには期待
できなかつた正確な岩盤調査が簡単、迅速に行え
るなど、小規模な地上設備で以つて優れた多くの
成果が得られるものである。 Furthermore, according to the present invention, the molding material 2 attached to the outer circumferential surface of the packer 1 is expanded and strongly pressed against the hole wall surface, so that existing cracks that have been closed are closed by the pressure. This small-scale ground equipment makes it possible to take impressions of cracks that have expanded or newly formed, allowing accurate rock surveys that could not be expected from a TV camera that simply photographs the borehole wall easily and quickly. By doing so, many excellent results can be obtained.
第１図は本装置の一部を切欠して示す正面図、
又第２図は本装置の使用状態を示す配置図であ
る。
尚、図中１……パツカー、２……型採り材、３
……孔曲り測定器、４……高圧ホース、５……加
圧機構。
FIG. 1 is a front view with a part of the device cut away;
Moreover, FIG. 2 is a layout diagram showing the usage state of this device. In addition, in the figure 1...Patzker, 2...Mold material, 3
...hole bending measuring device, 4...high pressure hose, 5...pressurizing mechanism.
Claims (1)
カーを位置せしめ、該パツカーを膨張して予めそ
の外周に被嵌された型採り材を孔壁面に一定時間
強圧し、その後、パツカーを収縮、引揚げる際に
孔曲り測定器によつて上記型採り位置におけるボ
アホールの方位と角度を計測して、亀裂等の走
向、傾斜を算定するようにしたボアホール壁面の
亀裂測定方法。 ２ 膨縮可能なパツカーの外周面に可塑性を有す
る型採り材を被着自在とするとともに、該パツカ
ーの下方に孔曲り測定器を装着したことを特徴と
するボアホール壁面の亀裂測定装置。[Scope of Claims] 1. A packer of a crack measuring device is positioned at a predetermined position in a borehole, and the packer is inflated to strongly press the molding material previously fitted on the outer periphery of the hole wall surface for a certain period of time, and then the packer is expanded. A method for measuring cracks in a borehole wall surface, in which the orientation and angle of the borehole at the molding position are measured using a hole bending measuring device when contracting and pulling up the borehole, and the strike and inclination of the cracks, etc. are calculated. 2. An apparatus for measuring cracks in a borehole wall, characterized in that a plastic molding material can be freely attached to the outer peripheral surface of an expandable packer, and a hole bending measuring device is attached below the packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58070239A JPS59195105A (en) | 1983-04-20 | 1983-04-20 | Method and device for measuring crack on wall surface of bored hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58070239A JPS59195105A (en) | 1983-04-20 | 1983-04-20 | Method and device for measuring crack on wall surface of bored hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59195105A JPS59195105A (en) | 1984-11-06 |
| JPH0439612B2 true JPH0439612B2 (en) | 1992-06-30 |
Family
ID=13425810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58070239A Granted JPS59195105A (en) | 1983-04-20 | 1983-04-20 | Method and device for measuring crack on wall surface of bored hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59195105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906850A (en) * | 2019-12-04 | 2020-03-24 | 昆明理工大学 | Accurate positioning device and method for inclined deep hole sensor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01301101A (en) * | 1988-05-28 | 1989-12-05 | Shinwa Kako Kk | Lifting gap measuring method for building structure |
| JPH089942B2 (en) * | 1990-06-12 | 1996-01-31 | 株式会社藤井基礎設計事務所 | Crack measuring device for investigating properties in boreholes |
-
1983
- 1983-04-20 JP JP58070239A patent/JPS59195105A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906850A (en) * | 2019-12-04 | 2020-03-24 | 昆明理工大学 | Accurate positioning device and method for inclined deep hole sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59195105A (en) | 1984-11-06 |
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