CN204439065U - A kind of subgrade settlement monitoring system - Google Patents

A kind of subgrade settlement monitoring system Download PDF

Info

Publication number
CN204439065U
CN204439065U CN201520135128.9U CN201520135128U CN204439065U CN 204439065 U CN204439065 U CN 204439065U CN 201520135128 U CN201520135128 U CN 201520135128U CN 204439065 U CN204439065 U CN 204439065U
Authority
CN
China
Prior art keywords
level meter
foundation pile
monitoring system
subgrade settlement
measuring point
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
Application number
CN201520135128.9U
Other languages
Chinese (zh)
Inventor
王海英
常肖
原永平
阮祺
吕东源
梁鹏
邱喜华
王群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changan University
Original Assignee
Changan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN201520135128.9U priority Critical patent/CN204439065U/en
Application granted granted Critical
Publication of CN204439065U publication Critical patent/CN204439065U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a kind of subgrade settlement monitoring system, be included in the foundation pile arranged in the roadbed containing several settled layer, the foundation pile section that foundation pile is distributed in each settled layer by several correspondences connects and composes up and down, wherein, foundation pile section top topmost extends to outside roadbed, and is provided with the gas cylinder with contact air in it; Each foundation pile Duan Zhongjun installs the liquid bottle with liquid; Be provided with one group of level meter in each settled layer, often organize level meter and be all communicated with liquid bottle in its place settled layer in foundation pile section, and be all communicated with gas cylinder, the installation site of liquid bottle is higher than the installation site of the level meter in same settled layer; Often group level meter connects the data acquisition unit for obtaining settling data respectively.The utility model system adopts level meter to be connected with liquid bottle, and in subgrade settlement deformation process, realize real-time precise monitoring, expense is low, error is little; The layering achieving roadbed is measured, applied widely.

Description

A kind of subgrade settlement monitoring system
Technical field
The utility model relates to Structural Engineering field of measuring technique, especially relates to a kind of subgrade settlement monitoring system.
Background technology
To some important locations, buildings, public affairs (iron) road roadbed, tunnel, bridge, dam, landslide etc., will serious harm be produced after sedimentation accumulation acquires a certain degree, therefore its settlement monitoring frequency, precision, the time interval be had higher requirement; By to data acquisition, and treatment and analysis is carried out to data, not only can carry out the health status of Real-Time Monitoring structure, before sedimentation change exceedes safe range, prevent casualties, reduce property loss, and engineering construction progress can be instructed and improve construction quality, can also research and analysis data be passed through, next engineering be provided to the design considerations of science.Current specifications specifies, high-rise, structures, important heritage buildings and quantity-produced mine capital construction, Power-equipment Foundation, landslide monitoring etc. all will carry out being out of shape, settlement observation.
Current measuring method has: manual measurement method, GPS mensuration, section pipe mensuration, single-spot way etc., current most of engineering is using artificial mensuration, the shortcoming of the method: personnel depaly require high, number is no less than 2, large by weather effect, data volume is few, can not the health status etc. of reaction structure timely; The shortcoming of GPS mensuration: measuring accuracy can not meet the requirement of high standard construction quality, the improper underground works that is used in uses, the monitoring of such as high ferro, the distortion of tunnel structure body vertical differentiation.The shortcoming of section pipe mensuration is: can not carry out remote automation image data, employing be manual site's image data, times of collection is few, data volume is few, by weather effect.The shortcoming of current existence: 1, settlement monitoring technology is mainly manually to use traditional instrument to be measured as master at present, and this method can only be measured during highway construction, or measurement regular after highway operation.2, studying the deformation rule of subgrade settlement is a long-term process, and need a large amount of settling datas to support for it, if rely on use surveying instrument image data artificial every day, its cost is very high, and accuracy is not high.3, current GPS technology monitoring subgrade settlement can only monitor the settling amount on earth's surface, can not reflect the inner different soil property Deposition Situation of high-filled embankment.And GPS monitoring technology is ripe not enough, price is very expensive.
Utility model content
The purpose of this utility model overcomes prior art defect, provides a kind of and be applicable to earth's surface and underground settlement monitoring and the high subgrade settlement monitoring system of accuracy of measurement.
The technical solution of the utility model is:
Be included in the foundation pile arranged in the roadbed containing several settled layer, the foundation pile section that foundation pile is distributed in each settled layer by several correspondences connects and composes up and down, wherein, foundation pile section top topmost extends to outside roadbed, and is provided with the gas cylinder with contact air in it; Each foundation pile Duan Zhongjun installs the liquid bottle with liquid; Be provided with one group of level meter in each settled layer, often organize level meter and be all communicated with liquid bottle in its place settled layer in foundation pile section, and be all communicated with gas cylinder, the installation site of liquid bottle is higher than the installation site of the level meter in same settled layer;
Often group level meter connects the data acquisition unit for obtaining settling data respectively.
Described level meter of often organizing includes a benchmark level meter and several measuring point level meters, and wherein benchmark level meter is arranged on the outside of foundation pile, and measuring point level meter is arranged in roadbed, and successively away from foundation pile; Liquid bottle, benchmark level meter are connected by liquid pipe successively with measuring point level meter, and gas cylinder, benchmark level meter are connected by tracheae with measuring point level meter.
Described level meter of often organizing comprises three measuring point level meters.
In described gas cylinder, filtration unit is installed.
Drying agent is placed with in described gas cylinder.
Accompany one piece of iron plate between adjacent foundation pile section, benchmark level meter is arranged on iron plate.
Liquid in described liquid bottle is anti freezing solution.
Described data acquisition unit comprises collector and transmitter, collector is connected with measuring point level meter with benchmark level meter by data line, transmitter with interact for the remote server receiving and store data, remote server interacts with for the monitoring station of Real-Time Monitoring.
Described monitoring station adopts computing machine or mobile phone.
Liquid pipe between described benchmark level meter and measuring point level meter is snakelike setting.
The utility model relative to existing technologies, has following useful technique effect:
The utility model system adopts level meter to be connected with liquid bottle, and the height of liquid bottle is higher than level meter, liquid can be made to be full of liquid pipe, during subgrade settlement, pressure change in liquid pipe causes level meter chamber portions to change, become vacuum state by the anti-cavity here of connection gas cylinder and have influence on DATA REASONING, thus be out of shape this in subgrade settlement and realize real-time precise monitoring in process slowly, round-the-clock automatic acquisition settling data, do not need artificial point-to-point measurement, be convenient to managerial personnel and technician makes a policy, avoid manual measurement, expense is low, error is little; The utility model passes through the settled layer layering of roadbed, correspondence is by foundation pile segmentation and be arranged on level meter separate in each settled layer and data acquisition unit, achieve express highway roadbed layering to measure, can monitor earth's surface or the inner different soil property Deposition Situation of underground high-filled embankment, simple installation, practicality, antijamming capability are strong, applied widely, as gone for highway, railway, subway, bridge etc.
Further, the utility model, by adopting benchmark level meter and measuring point level meter conjunction measuring, makes measurement more accurate.
Further, the utility model, by by liquid pipe and the snakelike setting of tracheae, can prevent liquid pipe and tracheae from coming off, and can increase stability and the reliability of system simultaneously, improves the sensitivity of test.
Further, the utility model is by arranging filtration unit, ensure that the waterproof and dustproof of system, prevent because the water vapor in air or other corrosive gass corrode tracheae and liquid pipe, junction is avoided to get rusty, effectively prevent measuring point level meter and benchmark level meter from damaging, make systematic survey numerical value accurate.
Further, the utility model, by placing drying agent, prevents the water vapor in air from entering tracheae better, makes measurement numerical value more accurate.
Further, the utility model is by adopting anti freezing solution as measuring media, and situation about cannot measure under effectively can avoiding cryogenic conditions, the scope of application is wider.
Further, the utility model, by arranging collector and transmitter, can upload the real time data of each layer subgrade settlement to monitoring station, by arranging remote server, being convenient to it and analyzing subgrade settlement situation.
Accompanying drawing explanation
Fig. 1 is principle framework of the present utility model.
Fig. 2 is structure framework of the present utility model.
Fig. 3 is structural representation of the present utility model.
Wherein, 1. collector; 2. transmitter; 3. data line; 4. liquid pipe; 5. liquid bottle; 6. gas cylinder; 7. tracheae; 8. foundation pile; 9. benchmark level meter; 10. measuring point level meter.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details:
Should be appreciated that specific embodiment described herein only for explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1 to Figure 3, the utility model comprises settlement monitoring unit, data acquisition unit, remote server and monitoring station.
Wherein, settlement monitoring unit comprises level meter, foundation pile 8, liquid bottle 5 and link circuit, foundation pile 8 is vertically arranged on roadbed inside and upper end extends to outside roadbed, foundation pile 8 carries out subsection setup according to the layering of roadbed, comprise several foundation pile sections be connected up and down, a foundation pile section is arranged in a settled layer of roadbed, and be bolted between foundation pile section, liquid bottle 5 is all pacified in each foundation pile section, liquid in liquid bottle 5 is the anti freezing solution of the low coefficient of thermal expansion and contraction of low volatilization, in foundation pile section topmost, gas cylinder 6 is installed, gas cylinder 6 and contact air; Roadbed layering is determined as requested, and the segments of foundation pile 8 is consistent with the hierarchy number of roadbed.On some layers of sedimentation face, every one deck is all provided with one group of level meter, often organizes level meter and is made up of a benchmark level meter 9 and several measuring point level meters 10; The some groups of corresponding foundation pile sections of level meter distribute up and down, and the level meter on every layer all connects the liquid bottle 5 in this layer in foundation pile section, and all connects gas cylinder 6.
Benchmark level meter 9 passes on left liquid pipe 4 connecting fluid bottle 5, and connect gas cylinder 6 by tracheae 7, the cable splice on it connects collector 1 by data line 3, first measuring point level meter 10 passes on left the liquid pipe connection that liquid pipe 4 connects benchmark level meter 9, the gas-tpe fitting of benchmark level meter 9 is connected by tracheae 7, the cable splice of benchmark level meter 9 is connected by data line 3, right side connects the liquid pipe connection of next measuring point level meter 10 by liquid pipe 4, the gas-tpe fitting of next measuring point level meter 10 is connected by tracheae 7, the cable splice of next measuring point level meter 10 is connected by data line 3, each level meter connects so successively, last measuring point level meter 10 left side connecting fluid pipe 4, and the cable splice of a upper measuring point level meter 10 is connected by data line 3.
When benchmark level meter 9 is connected with liquid pipe 4 and tracheae 7 with measuring point level meter 10, liquid pipe 4 between level meter and tracheae 7 are walked snakelike, stay the surplus of liquid pipe 4 and tracheae 7 at level meter two ends more as far as possible, can prevent liquid pipe 4 and tracheae 7 from coming off like this in settling process, stability and the reliability of system can be increased simultaneously, improve the sensitivity of test, and tighten with water-proof cable tapered end, certain surplus should be left when benchmark level meter 9 is connected with data line 3 with measuring point level meter 10, and tighten with water-proof cable tapered end.This water-proof cable preventing lock gets rusty, play the function of locking data line 3, liquid pipe 4, has higher sealing and resistance to tension, ensure that the resistance to tension of data line 3 and liquid pipe 4 and the waterproof sealing performance of benchmark level meter 9 and measuring point thing position 10.
The right side no longer connecting fluid pipe 4 of last measuring point thing position 10, changes water-proof cable tapered end into seal plug and tightens; Seal plug has quick and reliable shutoff mode, and has extremely wide range of application, and installs simple, quick, ensure that the sealing required for system and reliability.
Benchmark level meter 9 is all connected gas cylinder 6 by tracheae 7 with measuring point level meter 10, air is passed in gas cylinder 6, tracheae 7 connects oral area interior installation filtration unit and the drying agent of gas cylinder 6, the installation site of liquid bottle 5 higher than the horizontal level of benchmark level meter 9 and measuring point level meter 10, to ensure that liquid is full of liquid pipe 4; And benchmark level meter 9 is arranged on foundation pile 8 side, be positioned on foundation pile 8, clamping one piece of sheet iron between foundation pile section connects, reference for installation level meter 9 on iron plate; To keep its benchmark effect; Described data acquisition unit is connected with measuring point level meter 10 with benchmark level meter 9.In gas cylinder 6, filtration unit is installed, and be placed with drying agent, ensure that the waterproof and dustproof of system, prevent because of the water vapor in air or the corrosion of other corrosive gass tracheae 7, liquid pipe 4, got rusty in junction, make measuring point level meter 10, benchmark level meter 9 damages, or make systematic survey numerical value occur error.
The benchmark level meter 9 adopted in the utility model is just the same with measuring point level meter 10 structure, and only installation site is different with the function played.Separate between each settled layer, benchmark level meter 9, measuring point level meter 10 do not interfere with each other.
Data acquisition unit comprises collector 1 and transmitter 2, collector 1 is connected with measuring point level meter 10 with the benchmark level meter 9 in same settled layer by the data line 3 of band shielding, transmitter 2 and remote server interact, remote server and monitoring station interact, monitoring station adopts computing machine or mobile phone, remote server carries out reception and the storage of data, and monitoring station reference address can be allowed to monitor in real time, and monitoring station adopts computer or mobile phone.
All settled layer can directly share a collector 1 and transmitter 2, also each settled layer a collector 1 and transmitter 2 can be adopted, collector 1 determines collection period, GPRS flow used by transmitter 2, and safety is accurately reliable, the unified power supply of whole system, low in energy consumption, antijamming capability is strong, and installation and maintenance are easy, can realize the monitoring long-term to roadbed.
Main working process of the present utility model and principle:
According to design drawing and practice of construction field condition, carry out the position of determining to install landfill foundation pile 8, the position of foundation pile 8 is selected relatively stable, and its vertical sedimentation is considered as zero relative to negative area.In the present embodiment, benchmark level meter 9, in the left side of roadbed, is arranged on foundation pile 8 side by foundation pile 8 landfill, and be positioned on foundation pile 8, roadbed divides three layers, then corresponding three settled layer; In same settled layer, benchmark level meter 9 is a level meter nearest from foundation pile 8 in this settled layer, because the vertical sedimentation of foundation pile 8 is considered as zero, so benchmark level meter 9 vertical sedimentation fixing with it is also considered as zero, to keep its benchmark effect; Benchmark level meter 9 is connected with several measuring point level meters 10, measuring point level meter 10 position, number are according to designing requirement, install in corresponding same settled layer position, form one group of level meter corresponding in this settled layer, often organize in the utility model in level meter and adopt three measuring point level meters 10; Benchmark level meter 9 passes on left liquid pipe 4 connecting fluid bottle 5, connects gas cylinder 6 by tracheae 7.By the horizontal level of liquid bottle 5 installation site higher than measuring point level meter 10, to ensure that liquid is full of liquid pipe 4.After access liquid bottle 5, leave standstill 5 minutes, check whether benchmark level meter 9 and measuring point level meter 10 have leakage, and whether liquid level has decline.
After measuring point level meter 10, benchmark level meter 9 and liquid bottle 5 installation, reading is carried out in energising, checks that each level meter returns numerical value.According to numerical value, level meter elevation is adjusted.Debugging completes, and adopt fine sand to carry out protection pipeline, thickness is minimum to be ensured at more than 100mm, then carries out filling out middle sandstone, finally fills out original soil again.Like this, both ensure that stability and the reliability of system, also ensure that the sensitivity of systematic survey, accuracy.
Primary data is passed to collector 1 by benchmark level meter 9 and sedimentation level meter 10, when subgrade settlement layer changes, can cause this settled layer that concavo-convex change occurs, thus causing the change of pressure in each section of liquid pipe 4, in this settled layer, the numerical value collection of pressure is transferred to collector 1 by data line 3 by measuring point level meter 10.In settling process, the pressure change due to liquid pipe 4 can cause benchmark level meter 9 and measuring point level meter 10 inner chamber volume change, so will connect gas cylinder 6 in case cavity becomes vacuum state and has influence on DATA REASONING here.Collector 1 will determine collection period and number of times, and the data collected are issued remote server through transmitter 2 by GPRS, and remote server receives and stores, and keeper carries out monitoring and the later stage inquiry of data by monitoring station reference address.
The utility model has the following advantages:
1, the sedimentation and deformation of roadbed is a process slowly, and with the carload, speed etc. on roadbed after operation because have much relations, the utility model system achieves its long-term, Real-Time Monitoring.
2, round-the-clock automatic acquisition settling data, does not need artificial point-to-point measurement, is convenient to managerial personnel and technician makes a policy, and avoids high cost that manual measurement brings and comparatively big error.
3, achieve express highway roadbed layering to measure, the real time data of each layer subgrade settlement can be uploaded to monitoring center.
4, system carries data center, is convenient to it and analyzes subgrade settlement situation.

Claims (10)

1. a subgrade settlement monitoring system, it is characterized in that: be included in the foundation pile (8) arranged in the roadbed containing several settled layer, the foundation pile section that foundation pile (8) is distributed in each settled layer by several correspondences connects and composes up and down, wherein, foundation pile section top topmost extends to outside roadbed, and is provided with in it and the gas cylinder of contact air (6); Each foundation pile Duan Zhongjun installs the liquid bottle (5) with liquid; One group of level meter is provided with in each settled layer, often group level meter is all communicated with the liquid bottle (5) in its place settled layer in foundation pile section, and being all communicated with gas cylinder (6), the installation site of liquid bottle (5) is higher than the installation site of the level meter in same settled layer;
Often group level meter connects the data acquisition unit for obtaining settling data respectively.
2. a kind of subgrade settlement monitoring system according to claim 1, it is characterized in that: described level meter of often organizing includes a benchmark level meter (9) and several measuring point level meters (10), wherein benchmark level meter (9) is arranged on the outside of foundation pile (8), measuring point level meter (10) is arranged in roadbed, and successively away from foundation pile (8); Liquid bottle (5), benchmark level meter (9) are connected by liquid pipe (4) successively with measuring point level meter (10), and gas cylinder (6), benchmark level meter (9) are connected by tracheae (7) with measuring point level meter (10).
3. a kind of subgrade settlement monitoring system according to claim 2, is characterized in that: the liquid pipe (4) between described benchmark level meter (9) and measuring point level meter (10) and tracheae (7) are snakelike setting.
4. a kind of subgrade settlement monitoring system according to claim 1 and 2, is characterized in that: described level meter of often organizing comprises three measuring point level meters (10).
5. a kind of subgrade settlement monitoring system according to claim 1, is characterized in that: install filtration unit in described gas cylinder (6).
6. a kind of subgrade settlement monitoring system according to claim 1 or 5, is characterized in that: described gas cylinder is placed with drying agent in (6).
7. a kind of subgrade settlement monitoring system according to claim 1, it is characterized in that: accompany one piece of iron plate between adjacent foundation pile section, benchmark level meter (9) is arranged on iron plate.
8. a kind of subgrade settlement monitoring system according to claim 1, is characterized in that: the liquid in described liquid bottle (5) is anti freezing solution.
9. a kind of subgrade settlement monitoring system according to claim 1, it is characterized in that: described data acquisition unit comprises collector (1) and transmitter (2), collector (1) is connected with measuring point level meter (10) with benchmark level meter (9) by data line (3), transmitter (2) with interact for the remote server receiving and store data, remote server interacts with for the monitoring station of Real-Time Monitoring.
10. a kind of subgrade settlement monitoring system according to claim 9, is characterized in that: described monitoring station adopts computing machine or mobile phone.
CN201520135128.9U 2015-03-10 2015-03-10 A kind of subgrade settlement monitoring system Expired - Fee Related CN204439065U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520135128.9U CN204439065U (en) 2015-03-10 2015-03-10 A kind of subgrade settlement monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520135128.9U CN204439065U (en) 2015-03-10 2015-03-10 A kind of subgrade settlement monitoring system

Publications (1)

Publication Number Publication Date
CN204439065U true CN204439065U (en) 2015-07-01

Family

ID=53606918

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520135128.9U Expired - Fee Related CN204439065U (en) 2015-03-10 2015-03-10 A kind of subgrade settlement monitoring system

Country Status (1)

Country Link
CN (1) CN204439065U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359346A (en) * 2019-07-08 2019-10-22 中铁第四勘察设计院集团有限公司 A kind of Roadbed Deformation monitoring system, method and storage medium
CN110470273A (en) * 2019-09-19 2019-11-19 河南理工大学 A kind of back sinking measurement ball monitoring method based on pressure difference
CN110686642A (en) * 2019-10-18 2020-01-14 四川交奥智控防护科技有限公司 Intelligent monitoring system and monitoring method for inverted arch heaving bottom
CN114705160A (en) * 2022-04-10 2022-07-05 同济大学 Tunnel longitudinal deformation monitoring system based on flexible sensing device, installation method and settlement algorithm

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359346A (en) * 2019-07-08 2019-10-22 中铁第四勘察设计院集团有限公司 A kind of Roadbed Deformation monitoring system, method and storage medium
CN110359346B (en) * 2019-07-08 2023-11-07 中铁第四勘察设计院集团有限公司 Roadbed deformation monitoring system, roadbed deformation monitoring method and storage medium
CN110470273A (en) * 2019-09-19 2019-11-19 河南理工大学 A kind of back sinking measurement ball monitoring method based on pressure difference
CN110470273B (en) * 2019-09-19 2021-07-09 河南理工大学 Roadway roof subsidence measuring ball monitoring method based on pressure difference
CN110686642A (en) * 2019-10-18 2020-01-14 四川交奥智控防护科技有限公司 Intelligent monitoring system and monitoring method for inverted arch heaving bottom
CN110686642B (en) * 2019-10-18 2022-08-19 四川交奥智控防护科技有限公司 Monitoring method based on inverted arch bottom heave intelligent monitoring system
CN114705160A (en) * 2022-04-10 2022-07-05 同济大学 Tunnel longitudinal deformation monitoring system based on flexible sensing device, installation method and settlement algorithm
CN114705160B (en) * 2022-04-10 2023-10-03 同济大学 Tunnel longitudinal deformation monitoring system based on flexible sensing device, installation method and sedimentation algorithm

Similar Documents

Publication Publication Date Title
CN204439065U (en) A kind of subgrade settlement monitoring system
CN104019795A (en) Railway settlement monitoring system and online monitoring method
CN107131862A (en) A kind of face-plate of rockfill dam deformation monitoring device and construction method
CN104697496B (en) Split type static hydraulic pressure difference settlement monitoring system and installation method thereof
CN109781773A (en) A kind of frost heave device and its detection method being layered telescopic detection soil
CN105806311A (en) Optical fiber slope dam displacement settlement monitoring system
CN205785189U (en) Subgrade settlement automatic monitoring device
CN102269578A (en) Device for measuring vertical deformation of spatial structure
CN102937439A (en) Subway interval tunnel settlement observation method and device
CN202928559U (en) Metro running tunnel settlement observation device
CN102563359B (en) Method and system for automatically monitoring vertical displacement of oil and gas pipeline in frozen soil region
CN209355903U (en) The mechanical sinking deformation monitoring new system of rock-fill dams rockfill
CN102563356B (en) System for automatically monitoring vertical displacement of oil and gas pipeline in frozen soil region
CN110409400B (en) Testing device and testing method for measuring time-space evolution characteristics of mud turbidity
CN1731109A (en) The measuring method of ground settlement and device thereof
CN106096796A (en) A kind of soft soil base sedimentation course prediction method mapped based on coordinate complex indexes
CN204154307U (en) A kind of geology settlement monitoring device
CN201567560U (en) Digital settlement device
CN102589639B (en) Observation system for saturation line of dam body of tailing reservoir
CN104596477A (en) Transformer substation foundation settlement monitoring method
CN201803708U (en) Device for measuring vertical deformation of space structure
CN202002643U (en) Ultrasonic surface-subsidence measurement device
CN208567865U (en) A kind of reusable deeper formation displacement automatic measuring prior-warning device
Wang et al. The Long-Term Settlement Deformation Automatic Monitoring System for the Chinese High-Speed Railway.
CN206944978U (en) A kind of face-plate of rockfill dam deformation monitoring device

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

Granted publication date: 20150701

Termination date: 20170310

CF01 Termination of patent right due to non-payment of annual fee