CN206859195U - A kind of monitoring pore water pressure device - Google Patents
A kind of monitoring pore water pressure device Download PDFInfo
- Publication number
- CN206859195U CN206859195U CN201720489498.1U CN201720489498U CN206859195U CN 206859195 U CN206859195 U CN 206859195U CN 201720489498 U CN201720489498 U CN 201720489498U CN 206859195 U CN206859195 U CN 206859195U
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- Prior art keywords
- tank
- water pressure
- steel plate
- pore water
- fixing steel
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
It the utility model is related to a kind of monitoring pore water pressure device, mainly by tank (1), fixing steel plate (2), permeable stone (3) and pore pressure gauge (4) composition, the middle part of fixing steel plate (2) is provided with perforate, tank (1) is connected with fixing steel plate (2), for hollow-core construction, inside center perforate, pore pressure gauge (4) is arranged in tank (1), permeable stone (3) is arranged in the perforate of fixing steel plate (2), upper surface abuts with the lower surface of tank (1), during test, pore water pressure enters tank (1) by permeable stone (3), pore pressure gauge (4) in tank (1) is acted, so as to realize the test of pore water pressure.Compared with prior art, the utility model has simple in construction, and installation is convenient with dismantling, and repeats the advantages that utilizing, and is adapted to pore water pressure test in many cases.
Description
Technical field
The utility model belongs to Geotechnical Engineering field, more particularly, to a kind of monitoring pore water pressure device.
Background technology
Pore water pressure is the very important research contents in Geotechnical Engineering field, the numerical values recited of pore water pressure and change
Situation often has a huge impact to engineering, so being necessary to be monitored pore water pressure measurement in construction.Such as
In loading precompressed ground, it is necessary to when controlled loading speed and the degree of consolidation；In pile foundation engineering, it is necessary to when controlling pile settlement rate；
In engineering dewatering, it is necessary to when controlling surface subsidence, pore water pressure test job in situ should be all arranged.
The instrument of test pore water pressure is referred to as pore pressure gauge.According to test philosophy, pore pressure gauge can divide
For closed (including electric measuring type and fluid pressure type) and open type.Machinery change caused by gauge head turns when pore water pressure changes
Change the electric measuring type that is referred to as of electric quantity change measuring signal into, pore pressure gauge directly transmits pore water pressure with liquid or gas medium
What power was measured is referred to as fluid pressure type, and open type is measured typically using metal or the measurement pipe of plastics with water-level gauge.Its
Middle electric measuring type pore pressure gauge is to be deformed using metal strain plate with load-bearing deformed element, and then causes to strain sheet resistance hair
The raw principle changed is operated, have simple in construction, time lag is smaller, be quick on the draw, dependable performance and it is easy to operate the advantages of,
It is to use widest manometer.
Needed when arranging pore pressure gauge comprehensive according to test object, construction factor, geological conditions and surrounding environment etc.
Consider to determine, measuring point buries pore pressure gauge after determining.But sometimes due to the reason such as place limitation is difficult to embedded pore water pressure
Power meter.For example during shield driving, in face common manometer is buried to determine pore water pressure be clearly to realize.
And the service life of embedded type pore pressure gauge is affected by environment larger.
Thus, objectively it is necessary to research and develop new pore water pressure force test device and method of testing, to adapt to more, more
The test of pore water pressure under complicated occasion.
Chinese patent CN105200971B discloses a kind of stake Soil Interface soil and pore water pressure force test device and method, high
It is embedded respectively at different cross section and stake end on strength prestressed concrete pile tube lateral wall to be symmetrically installed with silicon piezoresistance type soil pressure
Meter and silicon piezoresistance type pore pressure gauge, the inside top of high-strength prestressed concrete pipe pile are provided with pile body drilling, armored optical cable
Drilled by pile body and connected with YE2539 high speed static deformeters；The stake end of high-strength prestressed concrete pipe pile is sealed using steel plate
Bottom, the silicon piezoresistance type earth pressure gauge and silicon piezoresistance type pore pressure gauge of lowermost end are arranged on the bottom of steel plate, and gauge head is down,
The hole slot coordinated with armored optical cable is provided with steel plate.The measurement only for stake Soil Interface pore water pressure of the patent introduction
Method, and be the macroscopical introduction of comparison, the specific method for arranging of tester is not introduced；The emphasis of this patent be by
Pore pressure gauge is improved to the device of a self-organizing system, may be used in many engineerings.The scope of application is wider.
Utility model content
The purpose of this utility model is exactly to provide a kind of pore water pressure the defects of overcoming above-mentioned prior art to exist
Power monitoring device so that the pore water pressure test under some particular cases is possibly realized.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of monitoring pore water pressure device, mainly by tank, fixing steel plate, permeable stone and pore pressure gauge group
Into,
The middle part of described fixing steel plate is provided with perforate,
Described tank is connected with fixing steel plate, is hollow-core construction, inside center perforate,
Described pore pressure gauge is arranged in tank,
Described permeable stone is arranged in the perforate of fixing steel plate, and upper surface abuts with the lower surface of tank.
The outer surface of described tank hypomere is provided with screw thread, and company is matched with the internal thread of perforate in the middle part of fixing steel plate
Connect.
The aperture of the middle part perforate of described fixing steel plate is divided into two-stage, under the epimere aperture being connected with tank is less than
The aperture of section.
The aperture inner wall smooth of hypomere, described permeable stone are filled in the sector hole.
Described permeable stone is oblate column structure, suitable with fixing steel plate lower opening size；Permeable stone can make test circle
Pore water inside face enters tank.
Described pore pressure gauge is fixed in the perforate of tank through glue.Pore water pressure is calculated as electric measuring type,
Custom-made, tank top half internal diameter is dimensioned slightly smaller than, is fixed wherein using glue；The wire of pore pressure gauge from
The perforate of tank top surface is drawn, and opening gaps are blocked with glue.
The corner of described fixing steel plate is provided with bolt hole, is secured the device to using bolt on test interface.
The lower surface of described fixing steel plate is additionally provided with one layer of rubber cushion, ensures the sealing property of device, rubber cushion size is with determining
Position steel plate is consistent, and center and corner perforate, aperture and position correspond with steel plate.
The size and other details of package unit should be designed and be adjusted flexibly according to test object, ensure each part
Between match it is proper.Generally require prefabricated together with test object, ensure that fixing steel plate has the interface that can be fixed.
In use, needing each several part of assembling and testing device, realized using glue and bolt；Test circle is arranged to again
On face, the wire of pore pressure gauge is connected on deformeter., will when pore water enters tank by test interface
Pressure is produced to pore pressure gauge, pressure gauge spreads out of pressure data, realizes the test of pore water pressure.
Compared with prior art, the utility model has advantages below：
1st, the test scope of pore water pressure in engineering is extended, the monitoring property of engineering construction is enhanced, drops indirectly
Low engineering risk, improves safety guarantee.
2nd, the utility model can make on test interface or reserved peace according to the size of fixing steel plate, bolt position etc.
Dress condition, so as to facilitate to be installed in each test surfaces and realize test.
3rd, test device and the supporting making of test interface, can be convenient and swift with follow-on test during construction, also repeatable to make
With.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram tested in embodiment 2 using the utility model；
Fig. 3 is the schematic diagram tested in embodiment 3 using the utility model.
In figure, 1- tanks, 2- fixing steel plates, 3- permeable stones, 4- pore pressure gauges, 5- glue, 6- bolts, 7- storages
Hydrospace, 8- conveying worms, 9- measuring points, 10- shield machines, 11- soil cabins, 12- soil layers.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.Following examples will be helpful to this
The technical staff in field further understands the utility model, but does not limit the utility model in any form.It should be pointed out that
To those skilled in the art, without departing from the concept of the premise utility, some deformations can also be made
And improvement.These belong to the scope of protection of the utility model.
Embodiment 1
A kind of monitoring pore water pressure device, its structure is as shown in figure 1, mainly by tank 1, fixing steel plate 2, permeable
Stone 3 and pore pressure gauge 4 form.The middle part of fixing steel plate 2 is provided with perforate, and aperture is divided into two-stage.Tank 1 and positioning steel
Plate 2 is connected, and is hollow-core construction, inside center perforate, and pore pressure gauge 4 is arranged in tank 1, and permeable stone 3 is arranged on
In the perforate of fixing steel plate 2, upper surface abuts with the lower surface of tank, is formed between permeable stone 3 and pore pressure gauge 4
Water space 7.
The outer surface of the hypomere of tank 1 is provided with screw thread, and connection is matched with the internal thread of the middle part perforate of fixing steel plate 2.It is fixed
The aperture of the middle part perforate of position steel plate 2 is divided into two-stage, and the epimere aperture being connected with tank 1 is less than the aperture of hypomere.Hypomere
Aperture inner wall smooth, permeable stone 3 is filled in the sector hole.The permeable stone 3 used in the present embodiment is oblate column structure, with
The lower opening size of fixing steel plate 2 is suitable；Permeable stone 3 can make the pore water inside test interface enter tank.
Pore pressure gauge 4 is fixed in the perforate of tank through glue 5.Pore water pressure is calculated as electric measuring type, specially
Customization, is dimensioned slightly smaller than tank top half internal diameter, is fixed wherein using glue；The wire of pore pressure gauge is from water storage
The perforate of container top surface is drawn, and opening gaps are also blocked using glue 5.
The corner of fixing steel plate 2 is provided with bolt hole, is secured the device to using bolt 6 on test interface.In addition,
In order to ensure sealing property, one layer of rubber cushion, rubber cushion size and fixing steel plate one can also be set in the lower surface of fixing steel plate 2
Cause, center and corner perforate, aperture and position correspond with steel plate.
The size and other details of package unit should be designed and be adjusted flexibly according to test object, ensure each part
Between match it is proper.Generally require prefabricated together with test object, ensure that fixing steel plate has the interface that can be fixed.
In use, needing each several part of assembling and testing device, realized using glue and bolt；Test circle is arranged to again
On face, the wire of pore pressure gauge is connected on deformeter., will when pore water enters tank by test interface
Pressure is produced to pore pressure gauge, pressure gauge spreads out of pressure data, realizes the test of pore water pressure.
Embodiment 2
The pore water pressure test of dregs in conveying worm
Conveying worm is the significant components of earth pressure balanced shield, EPBS, heavy to closing to maintaining shield tunneling face earth pressure balance to play
The effect wanted.It changes soil discharge quantity by controlling rotating speed, so as to control soil cabin pressure, realizes soil cabin pressure and area surface pressure
Balance.The utility model is fixed on conveying worm, it is possible to test during conveying worm conveying dregs, dregs
In pore water pressure.
The details of implementation is as follows：
As shown in Fig. 25 measuring points 9 are respectively selected in the upper and lower of conveying worm 8, when conveying worm makes at these points
It is reserved with perforate.The manometer assembled is arranged on each measuring point.Conveying worm is during dregs is transported, dregs
In pore water tank is entered by permeable stone, realize the test of pore water pressure.
The high 30mm of tank, top half diameter 26mm, the latter half diameter 22mm, it is made of aluminium alloy.Bottom surface
Opening, there are 19mm × 22mm hollow area, a diameter of 5mm of top drilling in diameter 19mm, inside.Fixing steel plate size 52 × 52
× 15 (units：Mm), center drilling a diameter of 22mm and 27mm, corresponding thickness are 10mm and 5mm.The bolt hole of steel plate corner
Diameter 2.5mm, bolt hole center is away from steel plate edge 8.0mm.Permeable stone diameter 27mm, thick 5mm.Pore water pressure is calculated as diameter
17mm cylinder, high 13mm.Its wire is drawn from the perforate of tank top surface.
Rubber sheet gasket specification between test device and test interface is also 52mm × 52mm, center drilling diameter 27mm；
Corner perforate, aperture and position correspond with fixing steel plate.
Embodiment 3
The pore water pressure test of shield machine face
For earth pressure balanced shield, EPBS, soil cabin outer wall is directly contacted with the face soil body, and the utility model is arranged on into soil
On bulkhead, it is possible to measure the pore water pressure in the face soil body.
The details of implementation is as follows：
As shown in figure 3, shield machine 11 is arranged in soil layer 11, correct position is selected in the inner surface of soil cabin 11 of shield machine 10
As measuring point 9, shield machine is reserved with perforate condition when making at these.The manometer assembled is arranged on each measuring point
On.For shield machine during driving, the pore water in dregs enters tank by permeable stone, realizes the survey of pore water pressure
Examination.Device is overall and each part dimension can design according to cutter head of shield machine actual conditions, repeats no more.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims,
This has no effect on substantive content of the present utility model.
Claims (9)
- A kind of 1. monitoring pore water pressure device, it is characterised in that the device mainly by tank (1), fixing steel plate (2), Permeable stone (3) and pore pressure gauge (4) composition,The middle part of described fixing steel plate (2) is provided with perforate,Described tank (1) is connected with fixing steel plate (2), is hollow-core construction, inside center perforate,Described pore pressure gauge (4) is arranged in tank (1),Described permeable stone (3) is arranged in the perforate of fixing steel plate (2), and upper surface abuts with the lower surface of tank (1).
- A kind of 2. monitoring pore water pressure device according to claim 1, it is characterised in that described tank (1) The outer surface of hypomere is provided with screw thread, and connection is matched with the internal thread of perforate in the middle part of fixing steel plate (2).
- A kind of 3. monitoring pore water pressure device according to claim 2, it is characterised in that described fixing steel plate (2) The aperture of middle part perforate be divided into two-stage, the epimere aperture being connected with tank (1) is less than the aperture of hypomere.
- A kind of 4. monitoring pore water pressure device according to claim 3, it is characterised in that the aperture inwall light of hypomere Sliding, described permeable stone (3) is filled in the sector hole.
- A kind of 5. monitoring pore water pressure device according to claim 1 or 4, it is characterised in that described permeable stone (3) For oblate column structure.
- A kind of 6. monitoring pore water pressure device according to claim 1, it is characterised in that described pore pressure gauge (4) it is fixed on through glue in the perforate of tank (1).
- A kind of 7. monitoring pore water pressure device according to claim 1, it is characterised in that described pore pressure gauge (4) top drilling of the wire through tank (1) is drawn, and opening gaps block through glue.
- A kind of 8. monitoring pore water pressure device according to claim 1, it is characterised in that described fixing steel plate (2) Corner be provided with bolt hole, fix the device using bolt.
- A kind of 9. monitoring pore water pressure device according to claim 1, it is characterised in that described fixing steel plate (2) Lower surface be additionally provided with one layer of rubber cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720489498.1U CN206859195U (en) | 2017-05-04 | 2017-05-04 | A kind of monitoring pore water pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720489498.1U CN206859195U (en) | 2017-05-04 | 2017-05-04 | A kind of monitoring pore water pressure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206859195U true CN206859195U (en) | 2018-01-09 |
Family
ID=60822429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720489498.1U Expired - Fee Related CN206859195U (en) | 2017-05-04 | 2017-05-04 | A kind of monitoring pore water pressure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206859195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034870A (en) * | 2017-05-04 | 2017-08-11 | 同济大学 | A kind of device for testing pore water pressure |
| CN113565515A (en) * | 2021-07-24 | 2021-10-29 | 郑州大学 | Device and method for testing pore water pressure in site during subway communication channel freezing method construction |
-
2017
- 2017-05-04 CN CN201720489498.1U patent/CN206859195U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034870A (en) * | 2017-05-04 | 2017-08-11 | 同济大学 | A kind of device for testing pore water pressure |
| CN113565515A (en) * | 2021-07-24 | 2021-10-29 | 郑州大学 | Device and method for testing pore water pressure in site during subway communication channel freezing method construction |
| CN113565515B (en) * | 2021-07-24 | 2024-03-15 | 郑州大学 | Device and method for testing pore water pressure in freezing method construction of subway communication channel on site |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20200504 |