JPH03123228U - - Google Patents
Info
- Publication number
- JPH03123228U JPH03123228U JP3092590U JP3092590U JPH03123228U JP H03123228 U JPH03123228 U JP H03123228U JP 3092590 U JP3092590 U JP 3092590U JP 3092590 U JP3092590 U JP 3092590U JP H03123228 U JPH03123228 U JP H03123228U
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- water pressure
- filling
- light source
- optical sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000003566 sealing material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
第１図Ａは本考案の液面感知装置の側面図、第
１図Ｂは本考案の液面感知装置の正面図、第２図
Ａ、第２図Ｂ、第２図Ｃ、第２図Ｄ、第２図Ｅ、
第２図Ｆ、第２図Ｇは本考案の液面感知装置を用
いた地盤内の間隙水圧の測定方法における作業工
程をそれぞれ説明する断面正面図、第３図は前記
測定方法の作業順序のフローチヤートを示す図、
第４図Ａは前記測定方法で用いられるフイルター
材充填深度及び硬化したシール材上面の深度を測
定する装置の設置態様を示す断面正面図、第４図
Ｂは第４図Ａで示す装置の拡大正面図、第５図は
従来の地盤内の間隙水圧の測定方法を説明する断
面正面図である。
２，１８，１８−１，１８−２，１８−３……
フイルター材、４，１２，１２−１，１２−２，
１２−３……水圧計、５，２８−１，２８−２，
２８−３……シール材、１０……水圧測定管、２
０……充填深度測定装置、２４……液面感知装置
、４６……本体部、４８……開口部、５０……光
源、５２……光センサー、５４……信号線（信号
伝達手段）および電線、Ｇ……地盤、Ｈ，Ｈ１…
…ボーリング孔。
Fig. 1A is a side view of the liquid level sensing device of the present invention, Fig. 1B is a front view of the liquid level sensing device of the present invention, Fig. 2A, Fig. 2B, Fig. 2C, Fig. 2 D, Figure 2E,
Figures 2F and 2G are cross-sectional front views illustrating the work steps in the method for measuring pore water pressure in the ground using the liquid level sensing device of the present invention, and Figure 3 is a diagram showing the work order of the measurement method. Diagram showing a flowchart,
FIG. 4A is a cross-sectional front view showing the installation mode of a device for measuring the filling depth of the filter material and the depth of the upper surface of the cured sealing material used in the measurement method, and FIG. 4B is an enlarged view of the device shown in FIG. 4A. The front view and FIG. 5 are cross-sectional front views illustrating a conventional method for measuring pore water pressure in the ground. 2, 18, 18-1, 18-2, 18-3...
Filter material, 4, 12, 12-1, 12-2,
12-3...Water pressure gauge, 5, 28-1, 28-2,
28-3...Sealing material, 10...Water pressure measurement tube, 2
0... Filling depth measuring device, 24... Liquid level sensing device, 46... Main body, 48... Opening, 50... Light source, 52... Optical sensor, 54... Signal line (signal transmission means) and Electric wire, G...ground, H, H1...
...Borehole.
Claims (1)
ボーリング孔中へ挿入する工程と、フイルター材
を充填する工程と、フイルター材の充填深度を測
定する工程と、シール材を充填する工程と、シー
ル材の充填深度を測定する工程とを含む地盤内の
間隙水圧の測定方法で使用される液面感知装置に
おいて、本体部に開口部を形成し、該開口部の上
端および下端には光源および光センサーがそれぞ
れ設けられており、光源からの光を受光しなくな
つた時に光センサーが発生する信号を伝達する信
号伝達手段を設けた事を特徴とする液面感知装置
。 A step of inserting a water pressure measuring tube with a built-in water pressure gauge into the borehole at appropriate intervals, a step of filling the filter material, a step of measuring the filling depth of the filter material, a step of filling the sealing material, In a liquid level sensing device used in a method for measuring pore water pressure in the ground, which includes a step of measuring the filling depth of a sealing material, an opening is formed in the main body, and a light source and a light source are provided at the upper and lower ends of the opening. A liquid level sensing device characterized in that each optical sensor is provided, and a signal transmission means is provided for transmitting a signal generated by the optical sensor when the optical sensor stops receiving light from a light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3092590U JP2501976Y2 (en) | 1990-03-28 | 1990-03-28 | Liquid level sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3092590U JP2501976Y2 (en) | 1990-03-28 | 1990-03-28 | Liquid level sensing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03123228U true JPH03123228U (en) | 1991-12-16 |
| JP2501976Y2 JP2501976Y2 (en) | 1996-06-19 |
Family
ID=31533647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3092590U Expired - Lifetime JP2501976Y2 (en) | 1990-03-28 | 1990-03-28 | Liquid level sensing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501976Y2 (en) |
-
1990
- 1990-03-28 JP JP3092590U patent/JP2501976Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2501976Y2 (en) | 1996-06-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |