CN205785182U - A kind of soft soil base sedimentation sensor based on fiber grating sensing technology - Google Patents
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology Download PDFInfo
- Publication number
- CN205785182U CN205785182U CN201620647974.3U CN201620647974U CN205785182U CN 205785182 U CN205785182 U CN 205785182U CN 201620647974 U CN201620647974 U CN 201620647974U CN 205785182 U CN205785182 U CN 205785182U
- Authority
- CN
- China
- Prior art keywords
- fiber grating
- pipe
- sedimentation
- grating sensing
- soft soil
- 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
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology, including surveying sedimentation pipe, inclinometer pipe, corrosion resistant plate, fiber grating sensing element, optical cable and fiber Bragg grating (FBG) demodulator, wherein, survey sedimentation pipe and inclinometer pipe is mutually connected vertically and is embedded in soft soil foundation, and having the cross notch for fixing polylith corrosion resistant plate surveying sedimentation pipe with inclinometer pipe inwall, corrosion resistant plate thickness is consistent with cross width of rebate；And on corrosion resistant plate, it being welded with multiple fiber grating sensing element, fiber grating sensing element is connected with fiber Bragg grating (FBG) demodulator by optical cable；On survey sedimentation pipe top, steel plate is installed simultaneously.This utility model uses fiber grating to be sensing element, make full use of the superiority of optical fiber grating sensing material, it is easy to form monitoring network, to realize the real time and on line monitoring of deformation in transverse section whole to soft base sedimentation and weak soil body, there is highly sensitive, strong interference immunity, can automatically obtain data, water-tolerant, long advantage in service life.
Description
Technical field
This utility model relates to groundwork detection device technique field, particularly relates to a kind of based on fiber grating sensing technology
Soft soil base sedimentation sensor.
Background technology
Due to complexity, the particularity of geology formation, under roadside roadbed, it is usually present the thickest Soft Soil Layer, and soft
Soil layer has the shortcomings such as water content is high, compressibility is strong, void ratio is big, directly affects the stable of road and safety；At this point on base
When building road, if the processing mode taking roadbed is undesirable, then can be excessive because of road foundation sedimentation or relative settlement
And endanger the use function of road, can this is also road efficiently and the key of safe operation in operation stage, therefore settlement of foundation
Monitoring is the important content in engineer applied.
At present, the method for road construction monitoring soft soil roadbed settlement mainly uses settlement plate method, and settlement plate method makes
By traditional measuring instrument, not only precision is relatively low, and settlement plate volume is big, installs inconvenience, measuring point rapid wear, needs artificial pointwise to survey
Amount, it is impossible to automatically obtain data, measurement error is big, cannot measure especially at rainy weather, and the most long-term manual measurement is costly；
Additionally, settlement plate method can only be measured in construction period, after once road is open to traffic, just cannot continue to monitor the shape of subgrade settlement
Condition, lacks chronicity.Although, in recent years, occur in that employing type vibration wire settlement sensor monitoring, but such sensor exist anti-
Electromagnetic interference, water resistant interference performance are poor, the problems such as service life is short, automaticity is low, and the monitoring of type vibration wire settlement sensor
Can only pinpoint and measure, it is impossible to the deformation to whole transverse section is monitored, and has some limitations.
Utility model content
This utility model is solved the technical problem that to be to provide a kind of soft soil foundation based on fiber grating sensing technology
Settlement sensor, to solve the shortcoming in above-mentioned background technology.
This utility model is solved the technical problem that and is realized by the following technical solutions:
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology, including surveying sedimentation pipe, inclinometer pipe, stainless
Steel plate, fiber grating sensing element, optical cable and fiber Bragg grating (FBG) demodulator, wherein, survey sedimentation pipe and be mutually connected vertically with inclinometer pipe
It is embedded in soft soil foundation, and has the cross recess for fixing polylith corrosion resistant plate surveying sedimentation pipe with inclinometer pipe inwall
Mouthful, corrosion resistant plate thickness is consistent with cross width of rebate；And on corrosion resistant plate, it is welded with multiple fiber grating sensing element, optical fiber
Grating sensing element is connected with fiber Bragg grating (FBG) demodulator by optical cable；On survey sedimentation pipe top, steel plate is installed simultaneously, is beneficial to
Survey sedimentation pipe and soft soil foundation compatible deformation.
In this utility model, survey sedimentation pipe and the inclinometer pipe place of being mutually connected vertically is provided with hinge.
In this utility model, survey sedimentation pipe be that PVC material is made with inclinometer pipe, and survey sedimentation pipe and inclinometer pipe external diameter equal
For 65mm, internal diameter is 60mm, and the cross depth of rebate of inwall is 2mm, wide 2mm.
In this utility model, surveying sedimentation pipe two ends and be respectively arranged with protective cover, inclinometer pipe top is provided with protective cover, under
Portion is provided with sleeve, and sleeve is tapered sleeve.
In this utility model, polylith corrosion resistant plate is fixed by the two-sided connection of junction steel plate, to ensure that corrosion resistant plate is even
The rigidity connecing rear joint reaches the rigidity of original steel plate.
In this utility model, corrosion resistant plate thickness is 2mm, and width is 61mm, a length of 1000mm.
In this utility model, junction steel plate thickness is 2mm, and width is 10mm, a length of 40mm.
In this utility model, on corrosion resistant plate, the same side position of center line is quick every 500mm one fiber grating of welding
Sensing unit.
In this utility model, fiber grating sensing element is connected with optical cable by adpting flange.
In this utility model, first inclinometer pipe is installed, requires bottom inclinometer pipe to bury 1m to soft soil foundation hard stratum underground
Above, to guarantee not to be subjected to displacement on the downside of inclinometer pipe；And optical fiber grating sensing element is welded on stainless steel, every piece is stainless
Steel plate connects fixing by junction steel plate, and the optical fiber grating sensing element on corrosion resistant plate is connected by optical cable, subsequently will not
Rust steel plate inserts the cross notch of inclinometer pipe；Use the boring of rig location, the designed elevation that reaches hole to be drilled, then will be cased with
The inclinometer pipe of cylinder is put into and is holed, simultaneously by perpendicular or parallel with Rock And Soil trend direction for the cross notch in inclinometer pipe；Again
Secondary installation surveys sedimentation pipe, surveys sedimentation pipe and is embedded in soft ground surface layer, first inserts, by being used for, the corrosion resistant plate surveyed in sedimentation pipe
Connected fixing by junction steel plate, optical fiber grating sensing element welds on stainless steel, and by the optical fiber light on corrosion resistant plate
Grid sensing element is connected by optical cable, and corrosion resistant plate is put into survey sedimentation pipe subsequently, and when placing, alignment surveys the ten of sedimentation pipe
Corrosion resistant plate in word notch, and survey sedimentation pipe is on same level line, then protective cover covers on inclinometer pipe top, survey respectively
Sedimentation pipe two ends, in case impurity enters, the accuracy that impact is measured；In inclinometer pipe and the junction surveying sedimentation pipe, hinge is installed,
Optical cable is connected through hinge with fiber Bragg grating (FBG) demodulator, finally lays a block plate at a certain distance on survey sedimentation pipe top,
To make survey sedimentation pipe and soft soil foundation jointly sink；When soft soil foundation generation sedimentation and deformation, the soil body will be pressed down against surveying and sink
Fall pipe, extrude inclinometer pipe to the left, now, survey sedimentation pipe, inclinometer pipe deforms together with the soil body, and be arranged on survey sedimentation pipe with
Corrosion resistant plate in inclinometer pipe deforms the most therewith, therefore the change that the deformation occurred in assert soft soil foundation occurs with corrosion resistant plate
Shape has concordance, theoretical by deflection of beam, utilizes Difference Calculation method, derives each fiber grating sensing element measuring point
Strain value and and deflection value between relation, recycling fiber Bragg grating (FBG) demodulator measures the surface strain values of each measuring point, thus
Calculate the deflection value of each fiber grating sensing element measuring point, i.e. understand the sedimentation of soft soil foundation.
Beneficial effect:
1) surveying the dependent variable monitoring of corrosion resistant plate in sedimentation pipe and inclinometer pipe in this utility model uses fiber grating for passing
Sensing unit, makes full use of the superiority of optical fiber grating sensing material, by optical cable by the fiber grating sensing element in inclinometer pipe
Connect with the fiber grating sensing element surveyed in sedimentation pipe and carry out signal transmission, it is simple to form monitoring network, can count simultaneously
According to collection, with the real time and on line monitoring deformed in realizing transverse section whole to soft base sedimentation and weak soil body, settle for highway foundation
Monitor steadily in the long term with soft base internal modification situation and forecast with safe early warning, it is ensured that the safe operation of highway has the heaviest
The realistic meaning wanted；
2) in this utility model, sensor, by surveying sedimentation pipe and inclinometer pipe forms, not only can measure soft soil foundation whole cross-section
The Vertical Settlement amount in face, also can measure the horizontal distortion amount of soft subgrade soil body different depth；
3) in this utility model, corrosion resistant plate design is simple, easy to carry, easily installs, is greatly saved engineering cost；
4) this utility model uses fiber grating sensing technology, there is highly sensitive, strong interference immunity, can automatically obtain
Fetch data, water-tolerant, service life long, can the advantage of real time on-line monitoring settlement of soft foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of preferred embodiment of the present utility model.
Fig. 2 is that the PVC in preferred embodiment of the present utility model surveys sedimentation pipe sectional view.
Fig. 3 is that the PVC in preferred embodiment of the present utility model surveys sedimentation pipe and PVC inclinometer pipe connection diagram.
Fig. 4 is that the PVC survey sedimentation pipe in preferred embodiment of the present utility model is connected left view with PVC inclinometer pipe.
Fig. 5 is the corrosion resistant plate connection diagram in preferred embodiment of the present utility model.
Fig. 6 is that the PVC in preferred embodiment of the present utility model surveys the pre-buried top view of sedimentation pipe.
Fig. 7 be preferred embodiment of the present utility model bury schematic diagram underground.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, under
Face combines and is specifically illustrating, and this utility model is expanded on further.
Seeing a kind of based on fiber grating sensing technology the soft soil base sedimentation sensor of Fig. 1～7, it is heavy to survey including PVC
Drop pipe 1, PVC inclinometer pipe 2, sleeve 3, protective cover 4, corrosion resistant plate 5, junction steel plate 6, bolt 7, fiber grating sensing element 8, connect
Acting flange 9, hinge 10, optical cable 11, fiber Bragg grating (FBG) demodulator 12, cross notch 13 and steel plate 14.
In the present embodiment, PVC surveys sedimentation pipe 1 and is mutually perpendicular to PVC inclinometer pipe 2, and surveys sedimentation pipe 1 two ends end at PVC
Portion is provided with protective cover 4, and PVC inclinometer pipe 2 top is provided with protective cover 4, and PVC inclinometer pipe 2 bottom is provided with sleeve 3, and at PVC
Survey sedimentation pipe 1 and be provided with hinge 10, by hinge 10, bolt 7 by the guarantor on PVC inclinometer pipe 2 top with PVC inclinometer pipe 2 junction
Guard shield 4 is surveyed the protective cover 4 of sedimentation pipe 1 left end and is connected fixing with PVC；PVC surveys sedimentation pipe 1 and has with PVC inclinometer pipe 2 inwall
Cross notch 13, and the width of cross notch 13 and corrosion resistant plate 5 consistency of thickness, polylith corrosion resistant plate 5 by junction steel plate 6 with
Bolt 7 carries out two-sided connection to be fixed, and is inserting PVC survey sedimentation pipe 1, PVC inclinometer pipe section by section by connecting fixing corrosion resistant plate 5
In 2, fix corrosion resistant plate 5 by cross notch 13；Multiple fiber grating sensing element 8, optical fiber light it is welded with on corrosion resistant plate 5
Grid sensing element 8 is connected with optical cable 11 by adpting flange 9, and then optical cable 11 is through protective cover 4, hinge 10 and fiber grating solution
Instrument 12 is adjusted to connect；When PVC survey sedimentation pipe 1 is pre-buried, surveys sedimentation pipe 1 top at PVC and steel plate 14 is installed.
In the present embodiment, between corrosion resistant plate 5, joint uses two-sided being attached at junction steel plate 6 liang to fix, to protect
After card corrosion resistant plate 5 connection, the rigidity of joint reaches the rigidity of original steel plate.
In the present embodiment, PVC surveys sedimentation pipe 1 and PVC inclinometer pipe 2 external diameter and is 65mm, and internal diameter is 60mm, the ten of inwall
Word notch 13 degree of depth is 2mm, a length of 2000mm of wide 2mm, each joint PVC survey sedimentation pipe 1 and PVC inclinometer pipe 2, and passes through
PVC sleeve connection uses screw to be fixed after lengthening.
In the present embodiment, corrosion resistant plate 5 thickness is 2mm, and width is 61mm, a length of 1000mm.
In the present embodiment, junction steel plate 6 thickness is 2mm, and width is 10mm, a length of 40mm.
In the present embodiment, on corrosion resistant plate, 5 the same side position of center line weld a fiber grating sensitivity every 500mm
Element 8.
In the present embodiment, sleeve 3 is tapered sleeve.
In the present embodiment, PVC survey sedimentation pipe 1 top keeps at a certain distance away and installs a block plate 14, is beneficial to PVC survey heavy
Fall pipe 1 and soft soil foundation compatible deformation.
In the present embodiment, during in-site installation, first PVC inclinometer pipe 2 is installed, requires bottom PVC inclinometer pipe 2 to bury underground to soft
More than 1m in soil base hard stratum, to guarantee not to be subjected to displacement on the downside of PVC inclinometer pipe 2, uses rig to carry out location boring,
Ensure that the hole bored is vertical as far as possible, the designed elevation that reaches hole to be drilled, then the PVC inclinometer pipe 2 being cased with sleeve 3 is put into holed
In, simultaneously by perpendicular or parallel with Rock And Soil trend direction for the cross notch 13 in PVC inclinometer pipe 2；And by optical fiber grating sensing
Element 8 is welded on corrosion resistant plate 5, and every piece of corrosion resistant plate 5 connects fixing by junction steel plate 6, bolt 7, and on corrosion resistant plate 5
Optical fiber grating sensing element 8 connected by optical cable 11, subsequently corrosion resistant plate 5 is inserted the cross notch 13 of PVC inclinometer pipe 2；
Again installing PVC and survey sedimentation pipe 1, PVC surveys sedimentation pipe 1 and is embedded in soft ground surface layer, first will be used for inserting PVC and survey sedimentation pipe
Corrosion resistant plate 5 in 1 connects fixing by junction steel plate 6, bolt 7, and optical fiber grating sensing element 8 is welded on corrosion resistant plate 5,
And the optical fiber grating sensing element 8 on corrosion resistant plate 5 is connected by optical cable 11, subsequently corrosion resistant plate 5 is put into PVC and surveys sedimentation
In pipe 1, place time alignment PVC survey sedimentation pipe 1 cross notch 13, then with PVC sleeve will often save PVC survey sedimentation pipe 1 connect
And be screwed, and the corrosion resistant plate 5 that PVC surveys in sedimentation pipe 1 is on same level line, respectively by protective cover 4 finally
Cover on PVC inclinometer pipe 2 top, PVC surveys sedimentation pipe 1 two ends, in case impurity enters, and the accuracy that impact is measured；Additionally, at PVC
Inclinometer pipe 2 and PVC survey the junction of sedimentation pipe 1 and install hinge 10, and optical cable 11 is through hinge 10 with fiber Bragg grating (FBG) demodulator 12 even
Connect, then lay a block plate 14 at a certain distance on PVC survey sedimentation pipe 1 top, drive steel plate 14 when soft soil base sedimentation
Sedimentation, PVC surveys sedimentation pipe 1 and deforms therewith.
Before PVC survey sedimentation pipe 1 is installed at the scene, dig out wide 70mm, high 70mm at soft ground surface layer, and heavy with PVC survey
The fall isometric detection ditch of pipe 1, then the PVC after installing surveys sedimentation pipe 1 and is placed in detection ditch.
Fiber Bragg grating (FBG) demodulator 12 is for detecting the wavelength change of each fiber grating sensing element 8, and considers that temperature is mended
After repaying, providing the strain at each corrosion resistant plate 5 measuring point, the formula relationship further according to strain with amount of deflection calculates scratching of every bit
Angle value, is connected with each other owing to PVC inclinometer pipe 2 and PVC survey sedimentation pipe 1, thus causes PVC to survey sedimentation pipe 1 with PVC inclinometer pipe 2
Raw corner and horizontal displacement, therefore each measuring point value that PVC finally must survey sedimentation pipe 1 is modified.
The operation principle of soft soil base sedimentation sensor is:
When soft soil foundation generation sedimentation and deformation, the soil body will be pressed down against PVC and surveys sedimentation pipe 1 and extrude PVC deviational survey to the left
Pipe 2, PVC surveys sedimentation pipe 1, PVC inclinometer pipe 2 deforms together with the soil body, and is arranged on PVC and surveys sedimentation pipe 1 and PVC inclinometer pipe
Corrosion resistant plate 5 in 2 deforms the most therewith, therefore the deformation that the deformation occurred in assert soft soil foundation occurs with corrosion resistant plate 5
There is concordance, theoretical by deflection of beam, utilize Difference Calculation method, derive each fiber grating sensing element 8 measuring point
Strain value and and deflection value between relation, recycling fiber Bragg grating (FBG) demodulator 12 is measured the surface strain values of each measuring point, is calculated
Go out the deflection value of each fiber grating sensing element 8 measuring point, i.e. understand the sedimentation of soft soil foundation.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (9)
1. a soft soil base sedimentation sensor based on fiber grating sensing technology, including surveying sedimentation pipe, inclinometer pipe, rustless steel
Plate, fiber grating sensing element, optical cable and fiber Bragg grating (FBG) demodulator, it is characterised in that survey sedimentation pipe and be mutually perpendicular to inclinometer pipe
Connect and be embedded in soft soil foundation, and survey sedimentation pipe and inclinometer pipe inwall have for fix polylith corrosion resistant plate ten
Word notch, corrosion resistant plate thickness is consistent with cross width of rebate；And on corrosion resistant plate, it is welded with multiple fiber grating sensing element,
Fiber grating sensing element is connected with fiber Bragg grating (FBG) demodulator by optical cable；On survey sedimentation pipe top, steel plate is installed simultaneously.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
It is, surveys sedimentation pipe and the inclinometer pipe place of being mutually connected vertically is provided with hinge.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
Being, surveying sedimentation pipe is that PVC material is made with inclinometer pipe, and survey sedimentation pipe and inclinometer pipe external diameter are 65mm, and internal diameter is 60mm.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
Being, cross depth of rebate is 2mm, wide 2mm.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
Being, surveying sedimentation pipe two ends and be respectively arranged with protective cover, inclinometer pipe top is provided with protective cover, and bottom is provided with sleeve.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 5, its feature
Being, sleeve is tapered sleeve.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
Being, polylith corrosion resistant plate is fixed by the two-sided connection of junction steel plate.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
Being, on corrosion resistant plate, the same side position of center line welds a fiber grating sensing element every 500mm.
A kind of soft soil base sedimentation sensor based on fiber grating sensing technology the most according to claim 1, its feature
Being, fiber grating sensing element is connected with optical cable by adpting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620647974.3U CN205785182U (en) | 2016-06-28 | 2016-06-28 | A kind of soft soil base sedimentation sensor based on fiber grating sensing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620647974.3U CN205785182U (en) | 2016-06-28 | 2016-06-28 | A kind of soft soil base sedimentation sensor based on fiber grating sensing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205785182U true CN205785182U (en) | 2016-12-07 |
Family
ID=58127511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620647974.3U Expired - Fee Related CN205785182U (en) | 2016-06-28 | 2016-06-28 | A kind of soft soil base sedimentation sensor based on fiber grating sensing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205785182U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092042A (en) * | 2016-06-28 | 2016-11-09 | 江西公路开发总公司 | A kind of soft soil base sedimentation sensor based on fiber grating sensing technology |
| CN106960538A (en) * | 2017-04-28 | 2017-07-18 | 中煤邯郸设计工程有限责任公司 | A kind of goaf fire alarm temperature sensing optical fiber laying structure device |
| CN107228653A (en) * | 2017-06-30 | 2017-10-03 | 中铁十四局集团有限公司 | Tunnel mechanism for monitoring and the Monitoring method of the subsidence for tunnel |
| CN108756856A (en) * | 2018-06-21 | 2018-11-06 | 广东赛达交通科技股份有限公司 | A kind of construction method of distribution type fiber-optic drillhole inclination survey |
-
2016
- 2016-06-28 CN CN201620647974.3U patent/CN205785182U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092042A (en) * | 2016-06-28 | 2016-11-09 | 江西公路开发总公司 | A kind of soft soil base sedimentation sensor based on fiber grating sensing technology |
| CN106092042B (en) * | 2016-06-28 | 2019-05-14 | 江西公路开发总公司 | A kind of application method of the soft soil base sedimentation sensor based on fiber grating sensing technology |
| CN106960538A (en) * | 2017-04-28 | 2017-07-18 | 中煤邯郸设计工程有限责任公司 | A kind of goaf fire alarm temperature sensing optical fiber laying structure device |
| CN107228653A (en) * | 2017-06-30 | 2017-10-03 | 中铁十四局集团有限公司 | Tunnel mechanism for monitoring and the Monitoring method of the subsidence for tunnel |
| CN108756856A (en) * | 2018-06-21 | 2018-11-06 | 广东赛达交通科技股份有限公司 | A kind of construction method of distribution type fiber-optic drillhole inclination survey |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106092042B (en) | A kind of application method of the soft soil base sedimentation sensor based on fiber grating sensing technology | |
| CN205785182U (en) | A kind of soft soil base sedimentation sensor based on fiber grating sensing technology | |
| Bersan et al. | Distributed strain measurements in a CFA pile using high spatial resolution fibre optic sensors | |
| CN106894821B (en) | It is a kind of originate, the monitoring method of received well and jacking construction | |
| CN105547364B (en) | The splice type distributed optical fiber sensing system of roadbed internal monitoring | |
| CN108507526B (en) | Foundation pit deformation measuring device and measuring method thereof | |
| CN204177381U (en) | A kind of fiber bragg grating inclinometer device | |
| KR20100114738A (en) | Model of measuring underground displacement using inclinometer | |
| Li et al. | Experimental investigation on pipe-soil interaction due to ground subsidence via high-resolution fiber optic sensing | |
| CN106959095A (en) | Geology internal displacement three-dimension monitor system and its Embedded installation method, measuring method | |
| US7832274B1 (en) | System and method for pneumatic scour detection | |
| CN104596405A (en) | Real-time deformation contact monitoring device and method of underground rainfall-sewage pipeline | |
| CN103994846A (en) | Device and method for testing surrounding rock stress field distribution | |
| CN203642880U (en) | Fiber bragg grating distributed displacement sensor monitoring inner deformation of side slope | |
| CN106556376A (en) | A kind of monitoring underground space and the device and its measuring method of underground utilities deformation | |
| CN105157999B (en) | Appraisal procedure based on Distributed Optical Fiber Sensing Techniques pile integrality and lateral displacement | |
| CN206862331U (en) | Geology internal displacement three-dimension monitor system | |
| CN108225265A (en) | A kind of soft soil roadbed deformation remote comprehensive monitoring system and installation method | |
| CN204154307U (en) | A kind of geology settlement monitoring device | |
| Gao et al. | Performance evaluation of distributed strain sensing nerves for monitoring ground collapse: A laboratory study | |
| CN108517872B (en) | Method for measuring foundation pit deformation | |
| CN104316029B (en) | A kind of geology settlement monitoring device and monitoring method | |
| CN212872880U (en) | Radar antenna check out test set suitable for tunnel geology is surveyed | |
| CN108458164A (en) | A kind of artificial push pipe control method and control system | |
| CN107703055A (en) | Country rock relaxation monitoring device and its relaxation depth method of discrimination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20161207 Termination date: 20200628 |