JPH0816432B2 - Multiple packer type measuring method of groundwater pressure - Google Patents
Multiple packer type measuring method of groundwater pressureInfo
- Publication number
- JPH0816432B2 JPH0816432B2 JP1109067A JP10906789A JPH0816432B2 JP H0816432 B2 JPH0816432 B2 JP H0816432B2 JP 1109067 A JP1109067 A JP 1109067A JP 10906789 A JP10906789 A JP 10906789A JP H0816432 B2 JPH0816432 B2 JP H0816432B2
- Authority
- JP
- Japan
- Prior art keywords
- outer pipe
- bit
- type
- measuring method
- groundwater
- 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 - Fee Related
Links
- 239000003673 groundwater Substances 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 14
- 239000003566 sealing material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本考案は、地下水圧の多連パッカ式測定法に関する。The present invention relates to a multiple packer type measuring method of groundwater pressure.
［従来の技術］ 地下水圧の測定は、従来、地下水圧を知りたい地層に
測定器を埋設する埋設式と、遮水を目的とするダブルパ
ッカを備えた測定装置（以下ダブルパッカ式ゾンデと記
す）を目的の位置に設置するダブルパッカ式とによって
いた。[Prior Art] Conventionally, the measurement of groundwater pressure has been performed by using a buried type in which a measuring instrument is buried in a stratum whose groundwater pressure is to be known, and a measuring device equipped with a double packer for the purpose of blocking water (hereinafter referred to as a double packer type sonde). It was based on the double packer type installed at the target position.
前者は第７図に示すように、測定深度まで観測用のボ
ーリング孔１を削孔して測定深度に水圧計12を設置し、
その水圧計12の信号ケーブル14で地表の測定器15に接続
して水圧計12、信号ケーブル14をフィルタ材16、シール
材17で地層に直接かつ永久的に埋設するようにしてい
る。The former, as shown in FIG. 7, drills the borehole 1 for observation to the measurement depth and installs the water pressure gauge 12 at the measurement depth.
A signal cable 14 of the water pressure gauge 12 is connected to a measuring instrument 15 on the surface of the earth so that the water pressure gauge 12 and the signal cable 14 are directly and permanently buried in the stratum by a filter material 16 and a sealing material 17.
後者は第８図に示すように、観測用のボーリング孔１
を削孔し、その都度、水圧計12の上方および下方にパッ
カ13、13を備えたダブルパッカ式ゾンデ11を挿入して地
下水圧を知りたい位置に設置し、測定後にゾンデ11を引
き上げるようにしている。As for the latter, as shown in Fig. 8, borehole 1 for observation is used.
Drilling each time, insert the double packer type sonde 11 equipped with the packers 13, 13 above and below the water pressure gauge 12 each time, install it at the position where you want to know the groundwater pressure, and pull up the sonde 11 after measurement. There is.
［発明が解決しようとする課題］ 上記の従来の埋設式測定法は、１深度に１ボーリング
孔１が必要で、不経済である。また、埋設した水圧計12
が故障すると、もう一度ボーリング孔１を削孔しなけれ
ばならない。また、水圧計12をチェックする手段がない
等の問題がある。[Problems to be Solved by the Invention] The conventional buried measuring method described above is uneconomical because one boring hole 1 is required for each depth. In addition, the buried water pressure gauge 12
If it fails, the boring hole 1 must be drilled again. In addition, there is a problem that there is no means for checking the water pressure gauge 12.
他方、ダブルパッカ式測定法は、測定の機会毎にゾン
デ11を設置しなければならず、手間がかかって面倒であ
る。また、ボーリング孔１に対し保孔措置を施さないた
め、長期間の孔壁保持が困難である。また、非測定時に
各地層がボーリング孔１を介し連絡しているため、ゾン
デ11を設置してから孔内水圧が自然の状態（定常状態）
に回復するまで時間がかかり、複数層の水圧の測定に長
時間を要する。また、測定中も測定区間以外はボーリン
グ孔１を介して連絡しているため、地下水が自然の状態
と異っている可能性がある等の問題がある。On the other hand, the double packer type measurement method is troublesome because it requires a sonde 11 to be installed at each measurement occasion. Further, since no hole-holding measure is applied to the boring hole 1, it is difficult to hold the hole wall for a long period of time. In addition, since each layer communicates via the boring hole 1 when not measuring, the water pressure inside the hole is in a natural state (steady state) after installing the sonde 11.
It takes time to recover, and it takes a long time to measure the water pressure of multiple layers. In addition, during the measurement, since the parts other than the measurement section are connected via the boring hole 1, there is a problem that the groundwater may be different from the natural state.
本発明は、短時間に複数の深度の地下水圧を同時に測
定する地下水圧の多連パッカ式測定法を提供することを
目的としている。An object of the present invention is to provide a multiple packer type measuring method of groundwater pressure, which simultaneously measures groundwater pressures at a plurality of depths in a short time.
［課題を解決するための手段］ 本発明による地下水圧の多連パッカ式測定法は、観測
孔を削孔し、該観測孔に外管を建て込んで該外管と観測
孔壁との間にシール材を充填し、拡縮自在なウイングビ
ットを備えた拡翼ビットを外管内に吊り降ろし、該拡翼
ビットを回転しながら上下動し前記ウイングビットを拡
開して測定深度部分の外管およびシール材を内方から削
り取ってウォータパスを形成し、水圧計の上方および下
方にパッカを備えたダブルパッカ式ゾンデを複数連結し
た多連パッカ式ゾンデを外管内に吊り降ろし、複数深度
の地下水圧を同時に測定するようにしている。[Means for Solving the Problems] In the multiple packer type measurement method of groundwater pressure according to the present invention, an observation hole is bored, an outer pipe is built in the observation hole, and the outer pipe and the observation hole wall are provided. The expansion blade having a wing bit that can be freely expanded and contracted is hung in the outer tube, and the wing bit is moved up and down while rotating to expand the wing bit to expand the wing bit to the outer tube at the measurement depth portion. And the seal material is shaved from the inside to form a water path, and multiple pucker-type sondes with multiple double pucker-type sondes equipped with puckers above and below the water pressure gauge are suspended inside the outer pipe, and groundwater pressures at multiple depths are suspended. Are measured at the same time.
［作用］ 上記のように構成された地下水圧の多連パッカ式測定
法においては、観測孔の測定箇所以外の孔壁は、外管と
シール材とで保孔されて崩壊が防止される。[Operation] In the multiple packer type measurement method of groundwater pressure configured as described above, the hole wall other than the measurement point of the observation hole is retained by the outer pipe and the sealing material to prevent collapse.
また、多連パッカ式ゾンデによりダブルパッカ式ゾン
デと同程度の孔内水圧が定常状態になるまでの待期時間
で、複数深度の測定を同時に行い、全体としての測定時
間を短縮することができる。In addition, with the multiple packer type sonde, it is possible to simultaneously measure multiple depths with the waiting time until the water pressure in the hole becomes steady in the same level as the double packer type sonde, and it is possible to shorten the overall measurement time.
また、地下水の状態の変化を少なくすることができ
る。In addition, changes in the state of groundwater can be reduced.
［実施例］ 以下図面を参照して本発明の実施例を説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
本発明による測定法は、先ず第１図に示すように、地
盤にボーリング孔１を測定する最大深度より若干深く削
孔する。In the measuring method according to the present invention, first, as shown in FIG. 1, a hole is drilled slightly deeper than the maximum depth at which the boring hole 1 is measured.
次いで第２図に示すように、ボーリング孔１にボーリ
ング孔１より小径の外管（例えば塩化ビニールパイプ）
２を建て込み、外管２とボーリング孔１の孔壁との間に
例えばセメント系のシール材３を充填する。Then, as shown in FIG. 2, an outer pipe having a diameter smaller than that of the boring hole 1 (for example, a vinyl chloride pipe) is provided in the boring hole 1.
2 is built in, and a cement-based sealing material 3 is filled between the outer tube 2 and the hole wall of the boring hole 1.
次いで第３図に示すように、外管２内に第５図に示す
拡翼ビット５を吊り降ろし、測定深度（図示の例では４
深度）の部分の外管２とシール材３とを内方から削り取
り、いわゆるアンダーミーリングしてウォータパス４を
形成する。この拡翼ビット５は、本体６と、本体下部の
外管２にガイドされるパイロット部７と、本体６に拡縮
自在に収められたウイングビット８、８とからなり、ウ
イングビット８、８を縮めた状態で外管２内に吊り降ろ
し、図示しないボーリングマシンで回転しながら地表か
らの操作でウイングビット８、８を拡開し、上下動して
削り取りを行うようになっている。Then, as shown in FIG. 3, the expanding blade bit 5 shown in FIG.
The outer pipe 2 and the sealing material 3 in the depth portion are shaved from the inside, and so-called under milling is performed to form the water path 4. The expansion blade bit 5 includes a main body 6, a pilot portion 7 guided by the outer tube 2 at the lower portion of the main body, and wing bits 8 and 8 accommodated in the main body 6 so as to be expandable and contractible. It is hung in the outer pipe 2 in a contracted state, and while being rotated by a boring machine (not shown), the wing bits 8, 8 are opened by operation from the ground surface and moved up and down to scrape off.
次いで第４図に示すように、外管２内にワイヤロープ
９で全体を符号10で示す多連（図示の例では４連）パッ
カ式ゾンデを吊り降ろす。Next, as shown in FIG. 4, a multiple (four in the illustrated example) pucker-type sonde generally designated by the numeral 10 is hung in the outer tube 2 with a wire rope 9.
その多連パッカ式ゾンデ10は第６図に示すように、全
体を符号11で示すダブルパッカ式ゾンデを４個連結した
ものである。そのダブルパッカ式ゾンデ11は、水圧計12
の上方および下方にそれぞれパッカ13、13を備え、この
水圧計12は信号ケーブル14により測定器15（第７図）に
それぞれ接続され、また、ウォータパス４に正中するよ
うに、ダブルパッカ式ゾンデ11の間隔が設定されてい
る。As shown in FIG. 6, the multi-packer-type sonde 10 is formed by connecting four double-packer-type sondes indicated by reference numeral 11. The double packer type sonde 11 is a water pressure gauge 12
Puckers 13 and 13 are provided above and below, respectively, and the water pressure gauge 12 is connected to a measuring instrument 15 (Fig. 7) by a signal cable 14, and a double pucker type sonde 11 is provided so as to be in the center of the water path 4. Interval is set.
最後に、パッカ10を設置してからウォータパス４から
浸入した地下水により外管２内の水圧が定常状態に達し
たら、水圧計12により４深度の地下水圧を同時に測定す
る。Finally, when the water pressure inside the outer pipe 2 reaches a steady state due to the groundwater that has entered from the water path 4 after installing the packer 10, the water pressure gauge 12 simultaneously measures the groundwater pressures at four depths.
［発明の効果］ 本発明は、以上説明したように構成されているので、
以下に記載されるような効果を奏する。EFFECT OF THE INVENTION Since the present invention is configured as described above,
The following effects are achieved.
すなわち、多連パッカ式ゾンデを設置してから孔内の
水圧が定常状態に達するまでの時間は、ダブルパッカ式
測定法と同程度であるが、同時に複数深度の測定を行っ
て、全体の測定時間を短縮することができる。In other words, the time from the installation of multiple packer type sondes until the water pressure in the hole reaches the steady state is about the same as the double packer type measuring method, but the measurement time of multiple depths at the same time Can be shortened.
また、同時に複数のダブルパッカ式ゾンデを設置する
ことにより、地下水の状態の変化を少なくすることがで
きる。Also, by installing multiple double packer type sondes at the same time, it is possible to reduce changes in the state of groundwater.
また、測定箇所以外は、外管とシール材とで保孔し、
孔壁の崩壊を防止することができる。Also, except for the measurement points, hold holes with the outer tube and sealant,
It is possible to prevent collapse of the hole wall.
第１図ないし第４図は本発明の一実施例の作業工程を示
す縦断面図、第１図は削孔工程、第２図は外管設置工
程、第３図はアンダーミーリング工程、第４図は測定工
程を示す図面、第５図は拡翼ビットを示す正面図、第６
図はダブルパッカ式ゾンデを示す正面図、第７図および
第８図はそれぞれ異なる従来の測定法を示す縦断面図で
ある。 １……ボーリング孔、２……外管、３……シール材、４
……ウォータパス、５……拡翼ビット、８……ウィング
ビット、10……多連パッカ式ゾンデ、11……ダブルパッ
カ式ゾンデ、12……水圧計、13……パッカ1 to 4 are longitudinal sectional views showing working steps of an embodiment of the present invention, FIG. 1 is a hole making step, FIG. 2 is an outer tube setting step, FIG. 3 is an under milling step, and 4 FIG. 5 is a drawing showing a measurement process, FIG. 5 is a front view showing a blade for expanding blades, and FIG.
FIG. 1 is a front view showing a double packer type sonde, and FIGS. 7 and 8 are vertical sectional views showing different conventional measuring methods. 1 ... Boring hole, 2 ... Outer tube, 3 ... Seal material, 4
...... Water path, 5 ...... Expansion bit, 8 ...... Wing bit, 10 ...... Multiple packer type sonde, 11 ...... Double packer type sonde, 12 ...... Water pressure gauge, 13 ...... Packer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−150830（ＪＰ，Ａ) 特公 昭58−33359（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-150830 (JP, A) JP 58-33359 (JP, B2)
Claims (1)
んで該外管と観測孔壁との間にシール材を充填し、拡縮
自在なウイングビットを備えた拡翼ビットを外管内に吊
り降ろし、該拡翼ビットを回転しながら上下動し前記ウ
イングビットを拡開して測定深度部分の外管およびシー
ル材を内方から削り取ってウォータパスを形成し、水圧
計の上方および下方にパッカを備えたダブルパッカ式ゾ
ンデを複数連結した多連パッカ式ゾンデを外管内に吊り
降ろし、複数深度の地下水圧を同時に測定することを特
徴とする地下水圧の多連パッカ式測定法。1. A wing expanding bit provided with a wing bit which is capable of expanding and contracting, wherein an observation hole is drilled, an outer pipe is built in the observation hole, a sealing material is filled between the outer pipe and the observation hole wall. Is hung inside the outer pipe, and the wing bit is moved up and down while rotating the expanding blade bit to expand the wing bit and scrape the outer pipe and the sealing material at the measurement depth portion from the inside to form a water path, Multiple pucker-type measuring method for groundwater pressure, characterized by suspending multiple pucker-type sondes with multiple double-pucker sondes with upper and lower puckers connected inside an outer pipe and measuring groundwater pressure at multiple depths simultaneously .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109067A JPH0816432B2 (en) | 1989-05-01 | 1989-05-01 | Multiple packer type measuring method of groundwater pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109067A JPH0816432B2 (en) | 1989-05-01 | 1989-05-01 | Multiple packer type measuring method of groundwater pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02292493A JPH02292493A (en) | 1990-12-03 |
| JPH0816432B2 true JPH0816432B2 (en) | 1996-02-21 |
Family
ID=14500761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1109067A Expired - Fee Related JPH0816432B2 (en) | 1989-05-01 | 1989-05-01 | Multiple packer type measuring method of groundwater pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0816432B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323649B (en) * | 2021-07-26 | 2023-01-24 | 东营市鑫吉石油技术有限公司 | Integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system and using method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5833359B2 (en) | 2011-07-01 | 2015-12-16 | 株式会社ディスコ | Laser beam irradiation device |
-
1989
- 1989-05-01 JP JP1109067A patent/JPH0816432B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5833359B2 (en) | 2011-07-01 | 2015-12-16 | 株式会社ディスコ | Laser beam irradiation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02292493A (en) | 1990-12-03 |
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