CN103808282B - A kind of anchorage structures displacement monitor and method - Google Patents
A kind of anchorage structures displacement monitor and method Download PDFInfo
- Publication number
- CN103808282B CN103808282B CN201410096725.5A CN201410096725A CN103808282B CN 103808282 B CN103808282 B CN 103808282B CN 201410096725 A CN201410096725 A CN 201410096725A CN 103808282 B CN103808282 B CN 103808282B
- Authority
- CN
- China
- Prior art keywords
- piston
- liquid device
- piston component
- glass tubing
- liquid
- 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
Abstract
The present invention relates to a kind of anchorage structures displacement monitor and method, this device includes mensuration piston component and the benchmark piston component that structure is identical, measure piston component and include the first Sheng liquid device, contain the first glass tubing that liquid device top connects and the first piston being arranged in the first Sheng liquid device with first；It is connected with piston brace rod one end bottom first piston, bottom the first Sheng liquid device, there is the through hole making the piston brace rod other end pass and seal engagement therewith；First internal diameter containing liquid device is N times of the first diameter glass tube.The method, by indoor for parallel with benchmark piston component for the mensuration piston component anchor that is fixed on, measured piston component and is fixed with surface, anchorage zone by piston rod, the quantity of fluid such as pours into respectively in two glass tubings, gathers liquid level L in two glass tubings according to the detection cycle1、L2And bring L intoi=(L1‑L2)d2/D2Obtain anchorage zone displacement L on Impact directioni.Using the apparatus and method simple in construction that shift differences amplifying method is set up, monitoring cost is low, and monitoring velocity is fast, and precision is high.
Description
Technical field
The present invention relates to a kind of suspension bridge anchorage zone displacement monitoring method, particularly relate to a kind of shift differences method and carry out anchorage structures
The device and method of displacement monitoring.
Background technology
Suspension bridge is one of the most frequently used super-huge, large bridge bridge type, these large bridges all in each traffic main artery,
Investing huge, investment and maintenance cost are the hat of various bridge type.During operation, vehicle flowrate is very big, and load is heavy, to state
People's economic construction has immeasurable significance.Once there is security incident in these bridges, for the economic construction of country
Stable with society all will result in serious consequence.The horizontal force that subject from main push-towing rope due to Analysis of Suspension Bridges ' Anchorage is anti-with vertical
Power, is one of primary load bearing structure.Once anchorage structures destroys, and bridge can be caused to ruin the serious accident that people dies, and consequence is not
May imagine.
Tunnel-type anchorage must be embedded in the preferable country rock of engineering geological condition, therefore the stablizing of country rock in the middle of operation process
Property is most important.Water erosion environment can reduce the stability of tunnel-type anchorage country rock and gravity anchor basis, changes being subject to of anchorage
Power and deformation, cause the generation of the diseases such as anchor room cracking and off normal, anchor head and scattered cable saddle corrosion, and then affect bridge structure
Operation security.Therefore, carry out safety monitoring for the suspension bridge anchorage zone under water erosion environment the most necessary, be required for suspension cable
Bridge anchorage zone, carries out monitoring and researches and develops with device with technology state evaluating, early warning technology.
The technology status that the stress of suspension bridge anchorage zone gathers passing judgment on bridge with deformation is most important.Structural stress is supervised
Surveying, need to lay many foil gauges or optical fiber, intelligence sensor, cost is the highest；And displacement structure is monitored, only need
Laying minority control point in anchorage zone just can be with the stress of inverting anchorage structures and degree of impairment.
There are two kinds of method and apparatus that the displacement of anchorage zone is monitored at present: to utilize laser to carry out anchorage structures displacement monitoring
Method (201210399733.8) and utilize pressure differential to carry out the method (201210394633.6) of anchor structure displacement monitoring.
Wherein utilize laser to carry out the method for anchorage structures displacement monitoring prolongation laser instrument over time can twist, cause hot spot
Shape and position produce and change, and monitoring result causes bigger error；Pressure differential is utilized to carry out the side of anchor structure displacement monitoring
Method is not suitable for deeper tunnel, and when pressure differential range increases, monitoring accuracy can decrease.
Summary of the invention
The problems referred to above existed for prior art, it is an object of the invention to how to provide a kind of simple in construction, adaptability
Extensively, the anchorage structures displacement monitor that monitoring accuracy is high.
Another purpose is to provide a kind of monitoring method monitoring anchorage structures displacement.
For achieving the above object, the present invention adopts the following technical scheme that a kind of anchorage structures displacement monitor, including living
Plug connecting rod and mensuration piston component, described mensuration piston component includes the first Sheng liquid device, contains what liquid device top connected with first
First glass tubing and the first piston being arranged in the first Sheng liquid device, the outer wall of first piston and first is contained the inwall of liquid device and is slided
And sealing cooperation, the bottom of first piston is fixing with one end of piston brace rod to be connected, and the described first bottom containing liquid device has
For the through hole making the other end of piston brace rod pass, described through hole seals with piston brace rod and coordinates；Described first contains liquid
The internal diameter of device is N times of the first diameter glass tube, and N is natural number.
When temperature changes, measurement result can be caused certain impact by the stroke of piston brace rod.As the present invention's
A kind of preferred version, needs to study the linear thermal expansion ratio of piston brace rod, makes monitoring result the most accurate, it is therefore desirable to
Select the material that linear expansivity material is low, such as invar.
The method that the anchorage structures displacement monitor limited in application such scheme carries out anchorage structures displacement monitoring, specifically wraps
Include following steps:
1) mensuration piston component notice support is fixedly mounted on anchor indoor, wherein passes through piston brace rod bottom first piston
Fix with surface, anchorage zone；
2) in the first Sheng liquid device, liquid, the liquid level of institute's fluid injection body and the first glass tubing pipe are injected by the first glass tubing mouth of pipe
Mouth has suitable safe distance, facilitates the fluctuating reading of subsequent liquid liquid level；
3) liquid level height on each temperature spot in the first glass tubing when using thermometer demarcation mensuration piston component not stress
Angle value Lti, i is natural number；
4) set monitoring frequency, gather according to the monitoring frequency set and measure piston component on each time point by anchor force
Liquid level in rear first glass tubingTemperature spot with this time；
5) will collect every timeWith synthermal corresponding LtiBring formula intoCalculate, L in formulatiFor
The height value of liquid level in first glass tubing when mensuration piston component does not stresses under i temperature spot,For at i-th temperature spot
Lower mensuration piston component is by liquid level value in the first glass tubing after anchor force, LTiFor the first glass tubing under i-th temperature spot
The displacement after stress of the height of interior liquid level, by LTiBring formula (1) into,
Li=LTi · d2/D2 (1)
LiFor anchorage zone in the displacement on Impact direction of the i-th temperature spot, d is the internal diameter of the first glass tubing, and D is first
Contain the internal diameter of liquid device.
As a preferred embodiment of the present invention, a kind of anchorage structures displacement monitor also includes benchmark piston component, benchmark
Piston component includes the second Sheng liquid device, contains the second glass tubing of connecting of liquid device top with second and is arranged in the second Sheng liquid device
Second piston；Described second Sheng liquid device is parallel with the first Sheng liquid device and internal diameter is equal, and the second glass tubing is parallel with the first glass tubing
And internal diameter is equal.The advantage increasing benchmark piston component has: 1, need not demarcate in advance each temperature in the case of not stressing
The liquid level readings of degree point；2, have benchmark piston component, current actual displacement amount can be reflected in real time；3, become when temperature
When changing the most small, certain error can be caused by thermometer, but benchmark piston component and just measure piston under same environment
Slight temperature can be revised completely and change the error caused.
As the another kind of preferred version of the present invention, a kind of anchorage structures displacement monitor also includes image capture instrument and industry control
Machine, described image capture instrument is connected with industrial computer, it is achieved the real-time reception of data and long term data storage, and image capture instrument is used
In catch liquid level, described industrial computer for image capture instrument transmission the real-time reception of data, monitoring, longer-term storage and
Analyzing, industrial computer is connected by Internet or mobile communications network, it is achieved at long-range data monitoring, stores and analyzes.
The method that the anchorage structures displacement monitor limited in application such scheme carries out anchorage structures displacement monitoring, specifically wraps
Include following steps:
1) mensuration piston component and benchmark piston component are fixedly mounted on anchor parallel by support indoor, wherein measure piston
Assembly is fixed with surface, anchorage zone by piston brace rod, and benchmark piston component is fixed by fixed support；
2) adjust the first piston measured in piston component and the position of the second piston in benchmark piston component, make first to live
Filling in consistent relative to the initial position of anchorage zone with the second phase piston, the piston position of benchmark piston component is fixed；
3) in the first Sheng liquid device, the second Sheng liquid device, liquid is injected by the first glass tubing mouth of pipe and the second glass tubing mouth of pipe respectively
, and the holding of added amount of liquid is consistent；
4) detection cycle or frequency are set to liquid level L in two glass tubings1、L2It is acquired；
5) the liquid level L that will every time gather1、L2Bring formula (2) into,
Li=(L1-L2)d2/D2 (2)
L1For the liquid level measured in piston component in the first glass tubing, L2On the basis of in piston component in the second glass tubing
Liquid level, d is the first glass tubing or the internal diameter of the second glass tubing, and D is the internal diameter that liquid device contained by the first Sheng liquid device or second,
LiFor anchorage zone displacement on Impact direction；The L obtained according to monitoringi, the detection cycle of setting or frequency obtain anchorage zone
Peristalsis frequency, amplitude and long-term tendency data.
Relative to prior art, present invention have the advantage that
1, the present invention utilizes the principle that the liquid volume of fixed capacity does not changes under the conditions of uniform temperature, uses displacement
The method that difference is amplified devises the anchorage structures displacement monitor that monitoring accuracy is high.
2, displacement monitor simple in construction, low cost, to monitor easy for installation, the pot life is long.
3, the method that this employing shift differences amplifying method carries out anchor structure displacement monitoring can be effectively obtained the wriggling of anchorage zone
The related datas such as frequency, amplitude and long-term tendency, monitoring accuracy is high, and monitoring velocity is fast, can be the most connected to the network, reaches
The requirement of Internet of Things；The method monitoring cost is low simultaneously.
4, these apparatus and method propose based on tunnel anchorage, are not affected by the tunnel degree of depth when being monitored, no
Affected by there and then air pressure and acceleration of gravity, and carried out the method operation letter of anchorage structures displacement monitoring relative to laser
Single, monitoring accuracy is high.
Accompanying drawing explanation
Fig. 1 is this monitoring device mounting structure schematic diagram；
Fig. 2 is the structural representation before and after liquid level moves in glass tubing.
In figure: 1 anchorage zone；2 measure piston component；3 benchmark piston components；4 fixed supports；5 is thin
Cable；6 main push-towing ropes；7 piston brace rods；8 first pistons；9 first contain liquid device；10 first glass tubings；11
Piston moving displacement；Liquid level moving displacement in 12 first glass tubings；13 image capture instruments；14 second pistons；15
Second contains liquid device；16 second glass tubings.
Detailed description of the invention
1 and 2 couple of present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1: a kind of anchorage structures displacement monitor, including piston brace rod 7 and mensuration piston component 2, plug is even
Extension bar 7 uses invar material to make, and measures piston component 2 and includes the first Sheng liquid device 9, contains liquid device 9 top with first and connects
The first glass tubing 10 and the first piston 8 that is arranged in the first Sheng liquid device 9, the outer wall of first piston 8 and the first Sheng liquid device
The inwall of 9 slidingly and sealingly coordinates, and the bottom of first piston 8 is fixing with one end of piston brace rod 7 to be connected, and first contains liquid
The bottom of device 9 has the through hole for making the other end of piston brace rod 7 pass, and through hole seals with piston brace rod 7 and coordinates；
First internal diameter containing liquid device 9 is N times of the first glass tubing 10 diameter, and N is natural number, and the value of N can be according to monitoring accuracy
Needing to set, monitoring accuracy reaches as high as micron level.
Embodiment 2: the method that the anchorage structures displacement monitor in Application Example 1 carries out anchorage structures displacement monitoring:
Specifically comprise the following steps that
1) mensuration piston component 2 is fixedly mounted on anchor by support indoor, wherein measures piston component 2 and pass through piston
Connecting rod 7 is fixed with surface, anchorage zone 1；
2) in the first Sheng liquid device 9, liquid, the liquid level of institute's fluid injection body and the first glass are injected by the first glass tubing mouth of pipe 10
The pipe mouth of pipe 10 has suitable safe distance, facilitates the fluctuating reading of subsequent liquid liquid level；
3) use thermometer demarcate measure piston component 2 when not stressing in the first glass tubing 10 liquid level on each temperature spot
Height value Lti, i is natural number；
4) set monitoring frequency, gather according to the monitoring frequency set and measure piston component on each time point by anchor force
Liquid level in rear first glass tubingTemperature spot with this time；
5) will collect every timeWith synthermal corresponding LtiBring formula intoCalculate, L in formulatiFor
The height value of liquid level in first glass tubing 10 when mensuration piston component 2 does not stresses under i-th temperature spot,For in i-th
Piston component 2 is measured by liquid level value in the first glass tubing 10 after anchor force, L under temperature spotTiFor under i-th temperature spot
The height of liquid level displacement after stress in first glass tubing 10, by LTiBring formula (1) into,
Li=LTi·d2/D2 (1)
LiFor anchorage zone in the displacement on Impact direction of the i-th temperature spot, d is the internal diameter of the first glass tubing, and D is first
Contain the internal diameter of liquid device.
For convenience inspection gather liquid level can cover on the first glass tubing 10 liquid level one layer coloured and do not dissolve in liquid
Organic substance.
Embodiment 3: add benchmark piston component 3 on the basis of the anchorage structures displacement monitor described in embodiment 1,
Benchmark piston component 3 includes the second Sheng liquid device 15, contains the second glass tubing 16 of connecting of liquid device 15 top with second and is arranged on
Second contains the second piston 14 in liquid device 15, and material used by the second Sheng liquid device 15 is identical with the first Sheng liquid device 9, and second contains liquid
Device 15 is parallel with the first Sheng liquid device 9 and internal diameter is equal, and material used by the second glass tubing 16 is identical with the first glass tubing 10,
Second glass tubing 16 is parallel with the first glass tubing 10 and internal diameter is equal.
Also including image capture instrument 13 and industrial computer to improve monitoring accuracy, image capture instrument is connected with industrial computer, image
Acquisition Instrument is used for catching liquid level, and industrial computer for transmitting the real-time reception of data, monitoring, depositing for a long time to image capture instrument
Storage and analysis.
Embodiment 4: the method that the anchorage structures displacement monitor in Application Example 3 carries out anchorage structures displacement monitoring:
Specifically comprise the following steps that
1) mensuration piston component 2 and benchmark piston component 3 are fixedly mounted on parallel anchor indoor, wherein measure piston component 2
Being fixed with surface, anchorage zone 1 by piston brace rod 7, benchmark piston component 3 is by the fixing peace of fixed support 4 or other modes
Put；
2) adjust the first piston 8 measured in piston component 2 and the position of the second piston 14 in benchmark piston component 3, make
First piston 8 is consistent relative to the initial position of anchorage zone 1 with the second phase piston, and the piston position of benchmark piston component 3 is fixed
；
3) in the first Sheng liquid device, the second Sheng liquid device, liquid is injected by the first glass tubing mouth of pipe and the second glass tubing mouth of pipe respectively
, and the holding of added amount of liquid is consistent；
4) detection cycle or frequency are set to liquid level L in two glass tubings1、L2It is acquired (setting the detection cycle
Or frequency, such as 20HZ, the most per second carrying out liquid level in the first glass tubing 10 and the second glass tubing 16 20 times gathers and meter
Calculate)；
5) the liquid level L that will every time gather1、L2Bring formula (2) into,
Li=(L1-L2)d2/D2 (2)
L1For the liquid level measured in piston component 2 in first glass tubing 10, L2On the basis of the second glass tubing in piston component 3
Liquid level in 16, d is the first glass tubing 10 or internal diameter of the second glass tubing 16, and D is the first Sheng liquid device 9 or the second
Contain the internal diameter of liquid device 15, LiFor anchorage zone displacement on Impact direction.
Gather liquid level for convenience and can cover one layer of coloured and having insoluble in liquid on the second glass tubing 16 liquid level
Machine thing.
The principle of this monitoring method: two grip assemblies are all passed through fixed support 4 and is placed in anchor indoor parallel and is not subjected to displacement
Or the known place of displacement, it is fixedly mounted on surface, anchorage zone 1 by piston brace rod 7 owing to measuring piston component 2, when
When anchorage zone stress is wriggled before and after changing and occurring, the first piston 8 in mensuration piston component moves and (sets the first Sheng liquid
In device, first piston moving displacement is Li), and then the liquid level that impact measures in the first glass tubing 10 in piston component sends out
Changing (sets in the first glass tubing liquid level as L1).Due to the stretching/compressing volume constancy of fixed amount liquid, first
In Sheng liquid device, liquid volume knots modification (setting the first Sheng liquid device internal diameter as D) is equal to the stereomutation amount of the first glass liquid in pipe
(setting the first glass tubing internal diameter as d), i.e. π D2Li=π d2L1.Benchmark piston component 3 is except without piston brace rod and anchorage zone
Outside Xiang Lianing, other are identical with measuring piston component, and the liquid in two assemblies is at identical conditions owing to expanding with heat and contract with cold
Liquid level in the first and second glass tubings can be caused to occur identical change (to set in the second glass tubing liquid level as L2),
Above formula more becomes: π D2Li=π d2(L1-L2), wherein L1-L2It is to revise the first glass liquid in pipe height that temperature impact causes
Degree actual change amount, so the displacement (being anchorage zone displacement on Impact direction) of first piston reality is:
Li=(L1-L2)d2/D2
Finally illustrating, above example is only in order to illustrate technical scheme and unrestricted, although with reference to the most real
Execute example the present invention has been described in detail, it will be understood by those within the art that, can be to the technical side of the present invention
Case is modified or equivalent, and without deviating from objective and the scope of technical solution of the present invention, it all should be contained in the present invention
Right in the middle of.
Claims (6)
1. an anchorage structures displacement monitor, it is characterised in that: include piston brace rod (7) and survey
Fixed piston assembly (2), described mensuration piston component (2) includes the first Sheng liquid device (9), contains liquid device with first
(9) first glass tubing (10) of top connection and the first piston (8) that is arranged in the first Sheng liquid device (9),
The outer wall of described first piston (8) and the first inwall containing liquid device (9) slidingly and sealingly coordinate, first piston
(8) bottom is fixing with one end of piston brace rod (7) to be connected, and described first contains the bottom of liquid device (9)
There is the through hole for making the other end of piston brace rod (7) pass, described through hole and piston brace rod (7)
Seal and coordinate；Described first internal diameter containing liquid device (9) is N times of the first glass tubing (10) internal diameter, and N is
Natural number；
Also include benchmark piston component (3) and be used for supporting the fixed support (4) of benchmark piston component (3),
Described benchmark piston component (3) includes the second Sheng liquid device (15), contains liquid device (15) top with second and connects
Second glass tubing (16) and the second piston (14) being arranged in the second Sheng liquid device (15), described second contains
Liquid device (15) is parallel with the first Sheng liquid device (9) and internal diameter is equal, the second glass tubing (16) and the first glass
Pipe (10) is parallel and internal diameter is equal.
2. anchorage structures displacement monitor as claimed in claim 1, it is characterised in that: described piston
Connecting rod (7) uses invar material to make.
3. anchorage structures displacement monitor as claimed in claim 1 or 2, it is characterised in that: also wrap
Including image capture instrument and industrial computer, described image capture instrument is connected with industrial computer, and image capture instrument is used for catching liquid
Face height, described industrial computer for image capture instrument transmission the real-time reception of data, monitoring, longer-term storage and
Analyze.
4. use anchorage structures displacement monitor described in claim 1 to carry out anchorage structures displacement monitoring
Method, it is characterised in that: specifically include following steps:
1) piston component (2) will be measured and benchmark piston component (3) will be fixedly mounted on anchor indoor parallel, its
Middle mensuration piston component (2) is fixed with anchorage zone (1) surface by piston brace rod (7), benchmark piston
Assembly (3) is fixed by fixed support (4)；
2) adjust in the first piston (8) measured in piston component (2) and benchmark piston component (3)
The position of the second piston (14), makes first piston (8) and the second piston (14) relative to anchorage zone (1
) elemental height identical, in benchmark piston component (3), the position of the second piston (14) is fixed；
3) contained in liquid device, the second Sheng liquid device to first by the first glass tubing mouth of pipe and the second glass tubing mouth of pipe respectively
Inject liquid, and added amount of liquid keeps consistent；
4) detection cycle or frequency are set to liquid level L in two glass tubings1、L2It is acquired；
5) the liquid level L that will every time gather1、L2Bring formula (2) into,
Li=(L1-L2)d2/D2 (2)
L1For the liquid level measured in piston component (2) in the first glass tubing (10), L2On the basis of piston
Liquid level in second glass tubing (16) in assembly (3), d is the first glass tubing (10) or the second glass
The internal diameter of glass pipe (16), D is the internal diameter that the first Sheng liquid device (9) or second contains liquid device (15), LiFor anchor
The Gu Qu (1) displacement on Impact direction；The L obtained according to monitoringi, the detection cycle of setting or frequency obtain
Obtain the peristalsis frequency of anchorage zone, amplitude and long-term tendency data.
5. the method for anchorage structures displacement monitoring as claimed in claim 4, it is characterised in that: first
One layer of coloured and Organic substance insoluble in liquid is covered on liquid level in glass tubing (10).
6. the method for anchorage structures displacement monitoring as claimed in claim 4, it is characterised in that: described
One layer of coloured and Organic substance insoluble in liquid is covered on liquid level in second glass tubing (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096725.5A CN103808282B (en) | 2014-03-17 | 2014-03-17 | A kind of anchorage structures displacement monitor and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096725.5A CN103808282B (en) | 2014-03-17 | 2014-03-17 | A kind of anchorage structures displacement monitor and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103808282A CN103808282A (en) | 2014-05-21 |
| CN103808282B true CN103808282B (en) | 2016-08-17 |
Family
ID=50705397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410096725.5A Expired - Fee Related CN103808282B (en) | 2014-03-17 | 2014-03-17 | A kind of anchorage structures displacement monitor and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103808282B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330037B (en) * | 2014-11-24 | 2017-02-08 | 重庆交通大学 | Displacement monitoring device and method for laser projection type anchorage structure |
| CN104482889A (en) * | 2014-12-28 | 2015-04-01 | 武汉联创恒业科技有限公司 | Detection device for detecting plate thickness |
| CN107246837A (en) * | 2017-05-19 | 2017-10-13 | 来安县华鹏摩擦材料厂 | A kind of brake clutch piece roughness detection equipments |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1670396A1 (en) * | 1989-04-18 | 1991-08-15 | Уфимский авиационный институт им.Серго Орджоникидзе | Hydraulic device to measure displacements |
| JPH1062165A (en) * | 1996-08-23 | 1998-03-06 | Cosmo Keiki:Kk | Device for measuring elevation difference |
| CN101446486A (en) * | 2008-12-17 | 2009-06-03 | 重庆交通大学 | Method for measuring vertical displacement by hydraulic pressure and temperature and device thereof |
| CN201858969U (en) * | 2010-10-29 | 2011-06-08 | 重庆交通大学 | Micro-distance detector |
| CN102590886B (en) * | 2012-01-12 | 2014-02-19 | 山东科技大学 | Method for determining initial destroy of baseboard of coal mine roadway immediately |
| CN102864794B (en) * | 2012-10-17 | 2015-04-08 | 重庆交通大学 | Method for monitoring displacement of anchor structure by utilizing pressure difference |
-
2014
- 2014-03-17 CN CN201410096725.5A patent/CN103808282B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103808282A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105486351A (en) | Real-time monitoring method and real-time monitoring system for velocity and direction of underground water current | |
| CN110344815B (en) | Production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring | |
| WO2015143626A1 (en) | Two-flow well test analysis method and system on basis of indicator diagram | |
| Peng et al. | Application of the fiber-optic distributed temperature sensing for monitoring the liquid level of producing oil wells | |
| CN103808282B (en) | A kind of anchorage structures displacement monitor and method | |
| CN202974813U (en) | Indoor testing device for seepage characteristics of jointed rock mass | |
| CN106442937B (en) | A kind of novel sea shallow-layer soil strength variation detection system and its appraisal procedure | |
| CN108534730A (en) | A kind of device for measuring soil body deeply mixing cement-soil pile and surface settlement in real time | |
| CN103088850B (en) | Cycle friction sleeve barrel device for evaluating periodic load pile side friction | |
| CN107830890A (en) | A kind of tunnel safety monitoring system based on fibre optical sensor | |
| CN208238763U (en) | A kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement | |
| He et al. | Temperature tracer method in structural health monitoring: A review | |
| CN205426328U (en) | Hydroscillator simulating measurement setup is in pit used in well drilling | |
| CN204903300U (en) | Testing arrangement is cuted in drilling of soil body normal position | |
| CN106705929B (en) | Building inclination dynamic measuring instrument and using method thereof | |
| CN102128646A (en) | High-low temperature precision detector for small photoelectric encoder | |
| CN103276713B (en) | Environmental piezocone penetration test (CPTU) probe capable of evaluating permeability characteristic of saturated soil in site | |
| CN203881299U (en) | Sliding mass depth displacement sensor based on fiber grating displacement detection | |
| CN102864794B (en) | Method for monitoring displacement of anchor structure by utilizing pressure difference | |
| CN110487838A (en) | A kind of portable salt marsh soil scene original position frost heave and molten sunken detection device | |
| CN206458460U (en) | Underground survey device and underground survey system | |
| CN102680351A (en) | Steady-state measurement system and method for air guide rate of frozen soil | |
| CN112946778B (en) | Method for early warning karst collapse based on underground water turbidity monitoring | |
| CN216920379U (en) | Intelligent anchor rod for landslide early warning | |
| CN202041216U (en) | Movable type calibrating device for gradiograph |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20160817 Termination date: 20190317 |