JPH032231U - - Google Patents
Info
- Publication number
- JPH032231U JPH032231U JP6088689U JP6088689U JPH032231U JP H032231 U JPH032231 U JP H032231U JP 6088689 U JP6088689 U JP 6088689U JP 6088689 U JP6088689 U JP 6088689U JP H032231 U JPH032231 U JP H032231U
- Authority
- JP
- Japan
- Prior art keywords
- water pressure
- pressure
- pore water
- mesh
- meshes
- 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 10
- 239000011148 porous material Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 238000005553 drilling Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 229920003002 synthetic resin Polymers 0.000 claims 1
- 239000000057 synthetic resin Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は、本考案の一実施例に係る間隙水圧計
の部分断面側面図、第２図は、同実施例中のフイ
ルタホルダとフイルタと締付ねじリングをそれぞ
れ分解して示す分解斜視図、第３図〜第５図は、
従来の各々異なる間隙水圧計の例を示す部分断面
側面図である。
１０……フイルタホルダ、１０ａ……開口部、
１０ｂ……雌ねじ、１１ａ，１１ｂ……剛性を有
するメツシユ円板（例えばステンレス、樹脂）、
１２……フイルタメツシユ板、１３……締付ねじ
リング、１４……圧力計、１５……ダイヤフラム
、１６……ひずみゲージ、１７……液充填層、１
８……ケーブル。
Fig. 1 is a partially sectional side view of a pore water pressure gauge according to an embodiment of the present invention, and Fig. 2 is an exploded perspective view showing the filter holder, filter, and tightening screw ring in the same embodiment, respectively. , Figures 3 to 5 are
FIG. 2 is a partially sectional side view showing examples of different conventional pore water pressure gauges. 10... Filter holder, 10a... Opening,
10b...Female thread, 11a, 11b...Rigid mesh disk (e.g. stainless steel, resin),
12... Filter mesh plate, 13... Tightening screw ring, 14... Pressure gauge, 15... Diaphragm, 16... Strain gauge, 17... Liquid filled layer, 1
8... Cable.
Claims (1)
隙水圧のみに対応した電気信号を出力する間隙水
圧計において、水圧によつて変形するダイヤフラ
ムとこのダイヤフラムの反受圧面側に添着された
ひずみゲージを有する圧力変換器と、前面側に前
記間隙水圧の作用する開口部を有すると共に、後
端側の開口端部に前記圧力変換器の受圧面側端部
を結合させるための結合部を有するフイルタホル
ダと、このフイルタホルダ内に収容された１枚ま
たは複数枚の比較的目が粗く且つ堅牢な第１のメ
ツシユと、この第１のメツシユよりも圧力変換器
寄り側に、または複数枚の前記第１のメツシユの
間に収容された目の細かい第２のメツシユと、こ
れら第１のメツシユと第２のメツシユを前記フイ
ルタホルダ内に重合状態に保持する保持部材とを
備え、被測定地盤の状況に応じて前記第１および
第２のメツシユの枚数、種類等を変更可能となし
、前記第１および第２のメツシユにより土粒子の
圧力を阻止し土中に含まれる水分を通過せしめて
、間隙水圧のみが前記ダイヤフラムに印加される
ように構成したことを特徴とする間隙水圧計。 (2) 第１のメツシユが、例えば、ステンレスス
テイール、合成樹脂等からなる剛性を有する円板
に多数の孔が穿設されて形成されていることを特
徴とする請求項１記載の間隙水圧計。 (3) 第２のメツシユが共重合化学繊維からなる
ことを特徴とする請求項１記載の間隙水圧計。[Claims for Utility Model Registration] (1) In a pore water pressure meter that outputs an electrical signal corresponding only to pore water pressure, excluding the pressure of soil particles in saturated soil, a diaphragm that deforms with water pressure and a a pressure transducer having a strain gauge attached to the side opposite to the pressure receiving surface; an opening on the front side on which the pore water pressure acts; and an end on the pressure receiving surface side of the pressure transducer at the open end on the rear end side. a filter holder having a coupling portion for coupling the filters, one or more relatively coarse and robust first meshes housed within the filter holder, and a pressure transducer greater than the first mesh; A fine second mesh is housed on the side or between a plurality of the first meshes, and the first mesh and the second mesh are held in a superposed state in the filter holder. The number, type, etc. of the first and second meshes can be changed depending on the condition of the ground to be measured, and the first and second meshes prevent the pressure of soil particles and A pore water pressure gauge characterized in that it is configured such that only pore water pressure is applied to the diaphragm by allowing moisture contained therein to pass through. (2) The pore water pressure according to claim 1, wherein the first mesh is formed by drilling a large number of holes in a rigid disk made of stainless steel, synthetic resin, etc. Total. (3) The pore water pressure gauge according to claim 1, wherein the second mesh is made of copolymerized chemical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060886U JPH089620Y2 (en) | 1989-05-29 | 1989-05-29 | Pore water pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060886U JPH089620Y2 (en) | 1989-05-29 | 1989-05-29 | Pore water pressure gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032231U true JPH032231U (en) | 1991-01-10 |
| JPH089620Y2 JPH089620Y2 (en) | 1996-03-21 |
Family
ID=31588646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989060886U Expired - Fee Related JPH089620Y2 (en) | 1989-05-29 | 1989-05-29 | Pore water pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089620Y2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5489143A (en) * | 1977-12-26 | 1979-07-14 | Takehiro Nishi | Fluid energy absorbing apparatus |
| JP2006003205A (en) * | 2004-06-17 | 2006-01-05 | Nishimatsu Constr Co Ltd | Pore water pressure gauge |
| JP2007132696A (en) * | 2005-11-08 | 2007-05-31 | Denso Corp | Pressure sensor and pressure sensor mounting structure |
| JP2009540271A (en) * | 2006-06-07 | 2009-11-19 | キストラー ホールディング アクチエンゲゼルシャフト | Membrane protector for sensor having a film |
| JP2021195825A (en) * | 2020-06-17 | 2021-12-27 | 錦城護謨株式会社 | Pore water pressure measurement assembly and its installation method |
| JP2023000042A (en) * | 2021-06-17 | 2023-01-04 | 地中空間開発株式会社 | Shield machine and method for measuring earth and sand pressure of shield machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3583347B2 (en) * | 2000-05-09 | 2004-11-04 | 株式会社山武 | Differential pressure / pressure transmitter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536444A (en) * | 1976-07-05 | 1978-01-20 | Okawara Mfg | Production of dry noodle |
| JPS636005U (en) * | 1986-06-30 | 1988-01-16 |
-
1989
- 1989-05-29 JP JP1989060886U patent/JPH089620Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536444A (en) * | 1976-07-05 | 1978-01-20 | Okawara Mfg | Production of dry noodle |
| JPS636005U (en) * | 1986-06-30 | 1988-01-16 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5489143A (en) * | 1977-12-26 | 1979-07-14 | Takehiro Nishi | Fluid energy absorbing apparatus |
| JP2006003205A (en) * | 2004-06-17 | 2006-01-05 | Nishimatsu Constr Co Ltd | Pore water pressure gauge |
| JP2007132696A (en) * | 2005-11-08 | 2007-05-31 | Denso Corp | Pressure sensor and pressure sensor mounting structure |
| JP2009540271A (en) * | 2006-06-07 | 2009-11-19 | キストラー ホールディング アクチエンゲゼルシャフト | Membrane protector for sensor having a film |
| JP2021195825A (en) * | 2020-06-17 | 2021-12-27 | 錦城護謨株式会社 | Pore water pressure measurement assembly and its installation method |
| JP2023000042A (en) * | 2021-06-17 | 2023-01-04 | 地中空間開発株式会社 | Shield machine and method for measuring earth and sand pressure of shield machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089620Y2 (en) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |