CN110260772A - The system and method for measurement soil and underground structure dynamic Relative sliding time-histories and path - Google Patents
The system and method for measurement soil and underground structure dynamic Relative sliding time-histories and path Download PDFInfo
- Publication number
- CN110260772A CN110260772A CN201910516327.7A CN201910516327A CN110260772A CN 110260772 A CN110260772 A CN 110260772A CN 201910516327 A CN201910516327 A CN 201910516327A CN 110260772 A CN110260772 A CN 110260772A
- Authority
- CN
- China
- Prior art keywords
- underground structure
- capacitance
- path
- soil
- histories
- 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
- 239000002689 soil Substances 0.000 title claims abstract description 84
- 238000005259 measurement Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 239000003292 glue Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/04—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B7/042—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
- G01B7/044—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length using capacitive means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention provides the system and methods of a kind of measurement soil and underground structure dynamic Relative sliding time-histories and path, comprising: connecting plate (1), sliding block (2), capacitance plate (3), capacitance pen (4), protective cover (5)；Wherein: the first end face of sliding block (2) is contacted with the soil body, and second end face and the capacitance pen (4) of sliding block (2) are fastenedly connected；The tip and capacitance plate (3) of capacitance pen (4) bottom are in electrical contact；Capacitance plate (3) is fastenedly connected with the connecting plate (1)；Protective cover (5) is arranged between connecting plate (1) and sliding block (2), to form the space for accommodating capacitance plate, capacitance pen；Opposite sliding occurs when Relative sliding occurs between measurement soil and underground structure, between the tip and capacitance plate of capacitance pen bottom, to measure soil and underground structure dynamic Relative sliding time-histories and path.System system structure in the present invention is simple, and detection is easy to operate, and range is big, waterproof and, accuracy height good every soil nature energy.
Description
Technical field
The present invention relates to technical field of civil engineering, and in particular, to when measurement soil is with underground structure dynamic Relative sliding
The system and method for journey and path.
Background technique
It is increasing to the exploitation demand of urban underground space with the fast development of Chinese society economy.Tunnel, subway
Engineering can alleviate traffic pressure significantly, improve trip condition, and Urban Underground pipe gallery can efficiently utilize the underground space, favorably
In the maintenance of pipeline and intensive management, etc..For preventing and reducing natural disasters for underground engineering structure especially Underground Lifeline Engineering
Anti-seismic performance research has highly important social and economic implications.Earthquake or the effect of other horizontal powers cause soil and underground work
Journey structure generates Relative sliding, and soil is the native weight with underground engineering structure interaction of reflection with structure interface relative slippage
Index is wanted, it is opposite with underground engineering structure contact surface to soil in shaking table model test and the test of other associated powers
The measurement of dynamic slide displacement be further investigation and explore underground structure seismic response mechanism important means, with this it will be seen that
Destruction situation and relative dynamic the sliding rule of soil and structure interface.
Currently, external only Japanese scholars have carried out a unique secondary design, but it constructs complexity, and production requires height, needs
It to slot on structural model, it is difficult to be realized in the relatively thin test model structure of tube wall.
The country only has " soil and underground structure contact face soil body slipping dynamic survey to the similar sensor of soil body slipping measurement
Quantity sensor (application number 200810032775.1, publication number CN10216366A) " disclose it is a kind of using angular displacement sensor and
Pulley mode measures the displacement sensor of soil with underground structure contact face soil body dynamic sliding.But this method actually makes
With in the process it cannot be guaranteed that sensor and underground structure surface keep being in close contact, if sensor base pulley disengages face
The sensor can not work normally；In addition this method is unable to measure other situations in addition to contact surface is plane, such as contact surface
For curved surface or other irregular interfaces.
There are " soil internal displacement measuring device and its measurement side in the country for the related sensor of underground land movement measurement
Method (application number 201010039640.5, publication number CN101749996A) ", but it is only limitted to the vertical of measurement inside soil body itself
Displacement is not suitable for the measurement soil opposite sliding position tangential with underground structure contact face such as the settling amount in the soil body at certain point
It moves.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of measurement soil and underground structure dynamic are relatively sliding
Move the system and method for time-histories and path.
In a first aspect, the present invention provides the system of a kind of measurement soil and underground structure dynamic Relative sliding time-histories and path,
It include: connecting plate, sliding block, capacitance plate, capacitance pen, protective cover；Wherein:
The first end face of the sliding block is contacted with the soil body, and the second end face of the sliding block is fastenedly connected with the capacitance pen；
The tip of the capacitance pen bottom and the capacitance plate are in electrical contact；The capacitance plate is fastenedly connected with the connecting plate；The guarantor
Shield is arranged between the connecting plate and sliding block, to form the space for accommodating the capacitance plate, capacitance pen；When measurement soil with
Opposite sliding occurs when Relative sliding occurring between underground structure, between the tip and the capacitance plate of the capacitance pen bottom,
Reflect between the measurement soil and underground structure the electric signal that Relative sliding occurs to generate, the electric signal is for the institute that converts
State measurement soil and underground structure dynamic Relative sliding time-histories and path.
Optionally, the protective cover is columnar hollow structure, the upper surface of one end of the protective cover and the connecting plate
It is fastenedly connected, the second end face of the other end of the protective cover and the sliding block connects.Wherein, protective cover can play appearance
It receives and sensor and completely cuts off the effect of the soil body.In order to measure the soil body and the tangential slippage of underground structure contact face, in practical application
In, it is desirable that the height and volume of the protective cover (5) should be as small as possible.
Optionally, cross bulge-structure is provided in the first end face of the sliding block.
Optionally, the capacitance pen is feeler lever shape retractable structure, and the capacitance pen bottom tip and the capacitance plate
It is slidably connected.In practical applications, capacitance pen length is short as far as possible, since capacitance pen bottom tip and the capacitance plate are in electrical contact,
So that moment contact is free to slide both in motion process, wherein bottom tip is shiny surface, therefore has been reduced as far as connecing
Frictional force when touching.
Optionally, the connecting plate is fastenedly connected by bolt or structure glue with underground structure body；Wherein, the electricity
Rong Ping is consistent with the curvature of the connecting plate contact face；The connecting plate is consistent with the curvature of underground structure contact face.
Optionally, the ratio of the total weight of the system and total volume is equal to the density of surrounding soil.
Second aspect, the present invention provide the method for a kind of measurement soil and underground structure dynamic Relative sliding time-histories and path,
Applied in above-mentioned measurement soil and underground structure dynamic Relative sliding time-histories and the system in path, which comprises
The sliding block is set and the tested soil body connects, the connecting plate is set and is fastenedly connected with tested underground structure；
Wherein, the connecting plate includes: to be bolted, glued connect with tested underground structure connection type；
Path and numerical value when the tested soil body slides are measured by the capacitance plate, path and number when the sliding
Value is related to the position that the sliding block drives capacitance pen to slide；
Path and numerical value output when according to the sliding determine slippage time-histories and the sliding road of the tested soil body
Diameter.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, measurement soil provided by the invention is with underground structure dynamic Relative sliding time-histories and the system in path by connecting plate, cunning
Block, capacitance plate, capacitance pen, protective cover composition, in which: the first end face of the sliding block is contacted with the soil body, and the second of the sliding block
End face is fastenedly connected with the capacitance pen, and the capacitance pen is contacted with the capacitance plate；The capacitance plate and the connecting plate are tight
It is solidly connected；The protective cover is arranged between the connecting plate and sliding block, to form the sky for accommodating the capacitance plate, capacitance pen
Between.System structure of the invention is simple, and detection is easy to operate, and range is big, waterproof and, accuracy height good every soil nature energy.
2, the total body density of present system is equal to ambient enviroment soil body density, so as to reflect and measure the true of the soil body
Real movement.System in the present invention is not damaged to tested underground structure body, unchanged the parameters such as stiffness by itself of flowering structure.
3, present system is small in size, even soil body fortune will not be influenced by being embedded in the soil body of scale (model) test
Dynamic globality.
4, present system is suitable for different types of underground structure contact face (such as plane, curved surface and various abnormity
Face), can precisely measure out the soil body along underground structure contact face it is tangential along cross section (ring) to displacement longitudinally axially
Component, and intuitively show soil body slipping path.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is measurement soil provided in an embodiment of the present invention and underground structure dynamic Relative sliding time-histories and the system in path
Schematic perspective view；
Fig. 2 is measurement soil provided in an embodiment of the present invention and underground structure dynamic Relative sliding time-histories and the system in path
Schematic diagram of internal structure；
In figure:
1- connecting plate；
2- sliding block；
3- capacitance plate；
4- capacitance pen；
5- protective cover.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
Fig. 1 is measurement soil provided in an embodiment of the present invention and underground structure dynamic Relative sliding time-histories and the system in path
Schematic perspective view；Fig. 2 is measurement soil provided in an embodiment of the present invention and underground structure dynamic Relative sliding time-histories and path
System schematic diagram of internal structure.Referring to Fig. 1, Fig. 2, the system in the present embodiment may include: connecting plate 1, sliding block 2, electricity
Hold screen 3, capacitance pen 4, protective cover 5；Wherein: the first end face of sliding block 2 is contacted with the soil body, the second end face and capacitance pen 4 of sliding block
It is fastenedly connected, capacitance pen 4 and capacitance plate 3 are in electrical contact；Capacitance plate 3 is fastenedly connected with connecting plate 1；Protective cover 5 is arranged in connecting plate 1
Between sliding block 2, to form the space for accommodating capacitance plate 3, capacitance pen 4.
In the present embodiment, sliding block 2 is contacted with the soil body, and increases frictional force by four-bladed vane, follows soil in soil body slipping
Body is mobile, and capacitance pen 4 is driven to slide.Sliding block is connected by capacitance pen 4 with capacitance plate 3, and capacitance plate 3 is by measuring and recording capacitance pen
4 real-time route, then converses the position of sliding block, and then obtains the multi-faceted slippage of the soil body.
In a kind of optional embodiment, protective cover 5 can be columnar hollow structure, one end of protective cover 5 and connection
The upper surface of plate 1 is fastenedly connected, and the second end face of the other end and sliding block 2 of protective cover 5 is fastenedly connected, so as to play protection
The effect of capacitance plate 3, capacitance pen 4.The height and volume of protective cover 5 should be as small as possible, and be cut with precise measurement soil with structure interface
To slippage.
In the present embodiment,
In a kind of optional embodiment, cross bulge-structure is provided in the first end face of sliding block 2.
In the present embodiment, setting cross bulge-structure can increase the frictional force between sliding block and the soil body.
4 appearance of capacitance pen described in a kind of optional embodiment is feeler lever shape, and length should be short as far as possible, bottom tip
It is in electrical contact with the capacitance plate 3, so that keeping free to slide both in motion process, bottom tip is shiny surface, as much as possible
Reduce frictional force when contact.
Specifically, when underground structure contact face is curved surface, the capacitance pen 4 can voluntarily adjust its length according to cambered surface curvature
Degree, contacts to guarantee that the end of capacitance pen 4 is remained with capacitance plate 3.
In a kind of optional embodiment, connecting plate 1 is connected by bolt or structure glue and the fastening of underground structure body
It connects, and the end face that is contacted with underground structure body of the curvature of end face that is contacted with underground structure body of capacitance plate 3 and connecting plate 1
Curvature is consistent with the curvature of underground structure contact face.
In the present embodiment, capacitance plate 3 tightens together with connecting plate 1, and connecting plate 1 is tied by bolt or structure glue and underground
Structure body connection, to not influence the intensity and dynamic characteristics of underground structure.
The system of measurement soil and underground structure dynamic Relative sliding time-histories and path provided in this embodiment, it is desirable that entire system
The total body density of system is identical as ambient enviroment soil body density, so that it is guaranteed that sensor accurately reflects and measures the power spy of the soil body
Property.
The present embodiment provides the systems of measurement soil and underground structure dynamic Relative sliding time-histories and path, can be to contact surface
The case where for plane, curved surface and various shaped faces, is applicable in, can test respectively cross section (ring) along underground structure to and the longitudinal axis
To displacement component, and soil body slipping path can be obtained.
In addition, the embodiment of the present invention also provides the side of a kind of measurement soil and underground structure dynamic Relative sliding time-histories and path
Method can be applied in any one of aforementioned measurement soil and underground structure dynamic Relative sliding time-histories and the system in path, method
Include:
Step 1: setting sliding block 2 and the tested soil body connect, and setting connecting plate 1 and the fastening of tested underground structure body connect
It connects；Wherein, connecting plate 1 includes: to be bolted, glued connect with tested underground structure body connection type.
Step 2: path and time-histories when the tested soil body slides being measured by capacitance plate 3, the path when sliding
And time-histories is related to the position that the sliding block 2 drives capacitance pen 4 to slide；
Step 5: path and time-histories when according to the sliding determine tested slippage and cunning of the soil body in different direction
Move path.
Specifically, it follows the soil body mobile in soil body slipping, capacitance pen 4 is driven to slide, capacitance pen 4 is by sliding block and capacitance plate
3 are connected, so that the available position for capturing capacitance pen 4 of capacitance plate, then converses the position of sliding block 2.Optionally, originally
Radio communication transmitter can also be arranged in embodiment, outer for recording and being transmitted to by signal intensity caused by change in displacement
Boundary, and then obtain the multi-faceted slippage of the soil body and sliding path.
System structure provided by the invention is simple, small in size, and detection is easy to operate, and can be adapted for different types of
Underground structure contact level (such as plane, curved surface and various shaped faces), precisely measures out along the cross section of underground structure
(ring) to vertical axis displacement component.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (7)
1. a kind of system of measurement soil and underground structure dynamic Relative sliding time-histories and path characterized by comprising connecting plate
(1), sliding block (2), capacitance plate (3), capacitance pen (4), protective cover (5)；Wherein:
The first end face of the sliding block (2) is contacted with the soil body, and the second end face of the sliding block (2) and the capacitance pen (4) fasten
Connection；The tip and the capacitance plate (3) of capacitance pen (4) bottom are in electrical contact；The capacitance plate (3) and the connecting plate
(1) it is fastenedly connected；The protective cover (5) is arranged between the connecting plate (1) and sliding block (2), accommodates the electricity to be formed
The space of Rong Ping (3), capacitance pen (4)；When Relative sliding occurs between measurement soil and underground structure, capacitance pen (4) bottom
Opposite sliding occurs between the tip in portion and the capacitance plate (3), to generate between the reflection measurement soil and underground structure
Occur the electric signal of Relative sliding, the electric signal for convert measurement soil and underground structure dynamic Relative sliding time-histories and
Path.
2. the system of measurement soil and underground structure dynamic Relative sliding time-histories and path according to claim 1, feature
It is, the protective cover (5) is columnar hollow structure, and one end of the protective cover (5) and the upper surface of the connecting plate (1) are tight
It is solidly connected, the other end of the protective cover (5) and the second end face of the sliding block (2) connect.
3. the system of measurement soil and underground structure dynamic Relative sliding time-histories and path according to claim 1, feature
It is, is provided with cross bulge-structure in the first end face of the sliding block (2).
4. the system of measurement soil and underground structure dynamic Relative sliding time-histories and path according to claim 1, feature
It is, the capacitance pen (4) is feeler lever shape retractable structure, and the capacitance pen (4) bottom tip and the capacitance plate (3) are sliding
Dynamic connection.
5. the system of measurement soil and underground structure dynamic Relative sliding time-histories and path according to claim 1, feature
It is, the connecting plate (1) is fastenedly connected by bolt or structure glue with underground structure body；Wherein, the capacitance plate (3)
It is consistent with the curvature of the connecting plate (1) contact face；The connecting plate (1) is consistent with the curvature of underground structure contact face.
6. the system of measurement soil and underground structure dynamic Relative sliding time-histories and path according to claim 1, feature
It is, the ratio of the total weight of the system and total volume is equal to the density of surrounding soil.
7. a kind of method of measurement soil and underground structure dynamic Relative sliding time-histories and path, which is characterized in that be applied to right
It is required that in the described in any item measurement soil of 1-6 and underground structure dynamic Relative sliding time-histories and the system in path, the method packet
It includes:
The sliding block (2) are set and the tested soil body connects, the connecting plate (1) is set and the fastening of tested underground structure connects
It connects；Wherein, the connecting plate (1) includes: to be bolted, glued connect with tested underground structure connection type；
Path and numerical value when the tested soil body slides are measured by the capacitance plate (3), path and number when the sliding
Value is related to the position that the sliding block (2) drive capacitance pen (4) to slide；
Path and numerical value output when according to the sliding, determine the slippage time-histories and sliding path of the tested soil body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516327.7A CN110260772B (en) | 2019-06-14 | System and method for measuring dynamic relative sliding time course and path of soil and underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516327.7A CN110260772B (en) | 2019-06-14 | System and method for measuring dynamic relative sliding time course and path of soil and underground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110260772A true CN110260772A (en) | 2019-09-20 |
| CN110260772B CN110260772B (en) | 2024-06-04 |
Family
ID=
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216366A (en) * | 2008-01-17 | 2008-07-09 | 同济大学 | Soil and underground structure contact face soil body slipping dynamic measurement sensor |
| CN103024194A (en) * | 2012-12-26 | 2013-04-03 | 珠海市魅族科技有限公司 | Mobile terminal and incoming call connecting method thereof |
| CN103557781A (en) * | 2013-09-10 | 2014-02-05 | 林立 | Dual monopole capacitor differential displacement sensor |
| DE102014003638A1 (en) * | 2014-03-14 | 2015-09-17 | Sciknowtec Gmbh | Capacitive contactless displacement sensor and control element |
| CN105468169A (en) * | 2014-08-13 | 2016-04-06 | 比亚迪股份有限公司 | Capacitance pen and capacitance pen locating method |
| CN106163225A (en) * | 2015-04-28 | 2016-11-23 | 中兴通讯股份有限公司 | Calorie control method and device |
| CN107255588A (en) * | 2017-05-03 | 2017-10-17 | 中国石油天然气集团公司 | A kind of pipeclay sliding measuring method and device |
| CN209945248U (en) * | 2019-06-14 | 2020-01-14 | 上海交通大学 | System for measuring dynamic relative slip time course and path of soil and underground structure |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216366A (en) * | 2008-01-17 | 2008-07-09 | 同济大学 | Soil and underground structure contact face soil body slipping dynamic measurement sensor |
| CN103024194A (en) * | 2012-12-26 | 2013-04-03 | 珠海市魅族科技有限公司 | Mobile terminal and incoming call connecting method thereof |
| CN103557781A (en) * | 2013-09-10 | 2014-02-05 | 林立 | Dual monopole capacitor differential displacement sensor |
| DE102014003638A1 (en) * | 2014-03-14 | 2015-09-17 | Sciknowtec Gmbh | Capacitive contactless displacement sensor and control element |
| CN105468169A (en) * | 2014-08-13 | 2016-04-06 | 比亚迪股份有限公司 | Capacitance pen and capacitance pen locating method |
| CN106163225A (en) * | 2015-04-28 | 2016-11-23 | 中兴通讯股份有限公司 | Calorie control method and device |
| CN107255588A (en) * | 2017-05-03 | 2017-10-17 | 中国石油天然气集团公司 | A kind of pipeclay sliding measuring method and device |
| CN209945248U (en) * | 2019-06-14 | 2020-01-14 | 上海交通大学 | System for measuring dynamic relative slip time course and path of soil and underground structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111323613B (en) | Vector optical fiber sensing probe based on optical fiber interferometer and underground vector accelerometer | |
| CN103697954A (en) | Micro-cavity interference flow velocity differential-pressure-sensitive structure and flow velocity and quantity sensor with micro-cavity interference fiber | |
| CN105783853A (en) | Deformation monitoring system of cable for underwater carrier positioning | |
| CN201028977Y (en) | Multi-parameter detecting instrument based on compound optical fiber device | |
| CN205404830U (en) | Dynamic balance formula wide band vibrations wave detector | |
| CN205279999U (en) | Crooked measuring device of cable | |
| CN201740615U (en) | High-precision torque measuring device of hydrostatic bearing | |
| CN110260772A (en) | The system and method for measurement soil and underground structure dynamic Relative sliding time-histories and path | |
| CN103234590A (en) | Underground optical fiber flow sensor in oil field | |
| CN209945300U (en) | One-way displacement sensor for measuring dynamic relative slip of soil and underground structure | |
| CN204924234U (en) | Laser survey building subsides device | |
| CN204373598U (en) | A kind of polarization adjustable digital formula photoelectric auto-collimator | |
| CN105911140A (en) | Elastic wave pick-up device for reducing phase difference interference | |
| CN110243270A (en) | The system and method for measurement soil opposite slide displacement amount with the tangential dynamic of underground structure | |
| CN202501842U (en) | Novel digital display two-dimension electronic level | |
| CN209945248U (en) | System for measuring dynamic relative slip time course and path of soil and underground structure | |
| AU2020100062A4 (en) | A Fiber Grating Pressure Sensor For Vertical Stress Test In Similar Simulation Experiments | |
| CN110260772B (en) | System and method for measuring dynamic relative sliding time course and path of soil and underground structure | |
| CN201673099U (en) | Mortar intensity digital display measurement instrument | |
| CN105203071A (en) | Direction finding device and direction finding method used for geostress survey | |
| CN106990432A (en) | A kind of integrated seismic wave data acquisition demodulation system and application method | |
| CN209945246U (en) | System for measuring tangential dynamic relative sliding displacement of soil and underground structure | |
| CN110243328A (en) | The sensor and method of measurement soil and underground structure contact interface dynamic Relative sliding | |
| CN201903347U (en) | Portable-type inclinometer used for monitoring slope stability | |
| CN203249720U (en) | Three direction soil pressure box capable of measuring current soil layer depth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |