CN209460413U - A kind of earth stone dam displacement monitoring system that tunneling boring networking is laid - Google Patents
A kind of earth stone dam displacement monitoring system that tunneling boring networking is laid Download PDFInfo
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- CN209460413U CN209460413U CN201920478397.3U CN201920478397U CN209460413U CN 209460413 U CN209460413 U CN 209460413U CN 201920478397 U CN201920478397 U CN 201920478397U CN 209460413 U CN209460413 U CN 209460413U
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Abstract
The utility model provides a kind of earth stone dam displacement monitoring system that tunneling boring networking is laid, and the monitoring system includes spark emission probe, seismic receiving probe, multichannel seismic detector, spark source launch control box；The multichannel seismic detector has trigger signal input terminal and rectified signal input terminal, and the spark source launch control box has trigger signal output end and pulse signal output end；The spark emission probe and seismic receiving probe layering interval are embedded in earth and rockfill dam dam body and intend monitoring section, and successively it is spaced network-like distribution, each spark emission probe is connect with the pulse signal output end of the spark source launch control box, the trigger signal output end of the spark source launch control box is connect with the seismographic trigger signal input terminal of multichannel, and the seismographic rectified signal input terminal of multichannel and each seismic receiving probe connect.The utility model can reach the purpose of medium-term and long-term monitoring earth and rockfill dam tunneling boring deformation.
Description
Technical field
The utility model relates to safety monitoring of earth-rockfill dams technical field, the native stone of specifically a kind of tunneling boring networking laying
Dam system for monitoring displacement, the level and vertical displacement inside high earth and rockfill dam for being suitable for filling on weak (micro-) decayed rock foundation plane
Monitoring.
Background technique
Southwestern China portion hydraulic and hydroelectric engineering many places in high seismic intensity area, earth and rockfill dam as a kind of flexible structure dam body,
It is very widely used.Earth and rockfill dam is excellent in terms of economy and the feature of environmental protection as a kind of hydro-structure that local natural material fills
Gesture is prominent, and retaining dam body structure is relatively easy, requires the dam types such as heavy force dam, arch dam low the dam foundation, and convenient for later period maintenance and
Enlarging.However, often occurring deck deflection deformation in terms of the operating condition of built earth-rock works, in operation, squeezing destruction, water
Be opened flat split, the problem on deformation such as dam body settlement.
Fill and in long-term operational process, Earth and Rockfill Dam, which is known from experience, generates biggish sedimentation (usually about the 1% of height of dam
Left and right) and horizontal distortion, this requires medium-term and long-term deformation monitoring must be done to earth and rockfill dam.According to " safety monitoring of earth-rockfill dams technology
Specification " SL551-2012, deformation monitoring section need to be selected inside dam body, arrangement observation instrument is monitored, to judge dam body
Whether deformation judges dam deformation trend in range of normal value, ensures the safe operation of earth and rockfill dam.
Currently in the instrument system of earth and rockfill dam monitoring, mainly there is tension wire type horizontal displacement meter, water-pipe type settlement instrument, divides
Cloth optical fiber and inclinometer etc..
A large amount of earth-rock works practice have shown that, now widely used tension wire type displacement monitoring meter for height of dam 100m with
Low earth and rockfill dam, is still preferably monitored dam deformation in interior, but is more than 100m, particularly 200m or more for height of dam
High earth and rockfill dam, there are large errors for displacement measurement numerical value.It is horizontal with certain 200m grades of concrete face rockfill dam built up in recent years
For displacement monitoring achievement, the discovery when being monitored using tension wire type horizontal displacement meter to dam body, dam filled load is drawn
Upstream is all biased in the horizontal displacement risen, and displacement upstream is greater than displacement downstream, which is contrary to routine.Analyze its original
Because predominantly high earth and rockfill dam geometric dimension be much larger than in low earth and rockfill dam, tension wire length be usually more than 500m be even up to 700m~
Irregular and unsmooth characteristic is presented along journey whip curve in 800m, it may be difficult to be modified to thus caused excessive error.This
Meaning the horizontal displacement monitoring of 100m or more high dam, not only ranging is too long, and pipeline whip degree also will be excessive, thus make with
The horizontal displacement value of the mobile amount measurement of tension wire is more much bigger than actual value, and because not necessarily regular along journey whip curve, smooth, will
It is difficult to be modified thus caused excessive error；In addition, the excessive tension wire displacement meter that will lead to of deformation cannot be with rock-fill dams
The horizontal displacement value of sedimentation coordinated development well, the mobile amount measurement of tension wire is more much bigger than actual value, draws when deforming larger
There are local fracture hidden danger for bracing cable.Therefore, it is necessary to carry out high earth stone dam displacement New Technologies for Monitoring research.
Water-pipe type settlement instrument is based on " communicating pipe " principle, and one end is located at measured position (with dam body settlement), other end position
In observation room (reference edge), when measurement will in communicating pipe full of water until tested end overflow, observe at this time room inner conduit water level with
Measured point is in the same horizontal position, and convert tested point height.It is more than the item of 200m in height of dam as the method that one kind measures indirectly
Under part, water-pipe type settlement instrument makes the sensitivity decrease of instrument since length of pipe is too long, significantly increases error.
In recent years, distribution type fiber-optic also has use in high earth and rockfill dam deformation monitoring, but in view of long range, multi-level light
The local deformation frequently encountered during difficulty and earth and rockfill dam placement grinding that fibre is laid with easily causes optical fiber cutting or drawing crack
Etc. factors, the monitoring system be easier to be damaged and be difficult to repair due to being embedded in dam body, it is long in meeting earth and rockfill dam
There are more uncertainties in terms of the stability monitoring of phase displacement.
Utility model content
The utility model provides a kind of earth stone dam displacement monitoring system that tunneling boring networking is laid, and can satisfy earth and rockfill dam
The stability monitoring of medium-term and long-term displacement.
A kind of earth stone dam displacement monitoring system that tunneling boring networking is laid, including spark emission probe, seismic wave connect
Receive probe, multichannel seismic detector, spark source launch control box；The multichannel seismic detector have trigger signal input terminal and
Rectified signal input terminal, the spark source launch control box have trigger signal output end and pulse signal output end；Institute
It states spark emission probe and seismic receiving probe layering interval is embedded in earth and rockfill dam dam body and intends monitoring section, and successively
It is spaced network-like distribution, the pulse signal output end of each spark emission probe and the spark source launch control box
The seismographic trigger signal input terminal of trigger signal output end and multichannel of connection, the spark source launch control box connects
It connects, the seismographic rectified signal input terminal of multichannel and each seismic receiving probe connect.
It further, further include the first power supply being connect with spark source launch control box.
It further, further include the second source being connect with multichannel seismic detector.
Further, multichannel seismic detector issues trigger signal by trigger signal input terminal and gives trigger signal output end,
Spark source launch control box is sent out by pulse signal output end output pulse signal to electric spark after receiving trigger signal
Probe is penetrated, pulse signal is popped one's head in by spark emission and issues electric spark, and it is defeated that electric spark blasting energy is converted into seismic signal
Out, spark source launch control box recording pulse signal output time, that is, the output time of seismic signal, while will note
The output time of the seismic signal of record feeds back to multichannel seismic detector, after seismic receiving probe receives seismic signal,
Multichannel seismic detector is inputed to by rectified signal input terminal, multichannel seismic detector records the input time of seismic signal.
When the utility model irregularly monitors Dam body displacement, spark source launch control box and more need to be only carried
Channel seismic detector can carry out displacement monitoring with being led in advance to downstream side dam slope to face empty cable port and be connected, by received from
The man-made explosion signal of body triggering, using the phase difference monitoring earth and rockfill dam transmitted in earth and rockfill dam in different filling crafts and runtime
Displacement increment (including sedimentation and horizontal distortion) achievees the purpose that medium-term and long-term monitoring earth and rockfill dam tunneling boring deformation with this.
Detailed description of the invention
Fig. 1 is the embedded schematic diagram that spark emission is popped one's head at the utility model foundation plane；
Fig. 2 is the embedded schematic diagram that the utility model fills process seismic receiving probe；
Fig. 3 is the utility model man-made explosion and spark emission probe module connection schematic diagram；
Fig. 4 is the utility model foundation plane receiving transducer detection operating mode schematic diagram；
Fig. 5 is that the detection of the utility model receiving transducer and method of addition deformation calculate schematic diagram；
Fig. 6 is the monitoring network schematic diagram of the utility model transmitting probe and receiving transducer building；
Fig. 7 is the utility model Earth-rockfill Dam Settlements deformation curve schematic diagram；
Fig. 8 is the utility model seismic wave wave amplitude-time curve schematic diagram.
In figure: 1-spark emission probe, 2-seismic receivings probe, 3-multichannel seismic detectors, the shake of 4-electric sparks
Source launch control box, the 5-the first power supply, 6-second sources, 31-trigger signal input terminals, 32-rectified signal input terminals,
41-trigger signal output ends, 42-pulse signal output ends.
Specific embodiment
Below in conjunction with the attached drawing in the utility model, the technical solution in the utility model is carried out clearly and completely
Description.
The utility model aim is to provide a kind of earth stone dam displacement monitoring system that tunneling boring networking is laid, by
Earth and rockfill dam intends monitoring section and successively lays and ultimately form the probe of network-like distribution: spark emission is popped one's head in (hereinafter referred to as
Transmitting probe) and seismic receiving probe (hereinafter referred to as receiving transducer), by receiving the man-made explosion signal of itself triggering, benefit
With the phase difference monitoring transmitted in earth and rockfill dam, earth and rockfill dam is alternative between different filling crafts and the displacement increment of operation, probe makes
With to realize the medium-term and long-term monitoring of earth and rockfill dam tunneling boring deformation.
To reach above-mentioned purpose, the one side of the utility model proposes a kind of earth stone dam displacement that tunneling boring networking is laid
Monitoring system, including spark emission probe 1, seismic receiving probe 2, multichannel seismic detector 3, spark source emission control
Case 4, the first power supply 5, second source 6, the first power supply 5 are connect with spark source launch control box 4, second source 6 and multi-pass
Road seismic detector 3 connects；The multichannel seismic detector 3 has trigger signal input terminal 31 and rectified signal input terminal 32, the electricity
Spark seismic source launch control box 4 has trigger signal output end 41 and pulse signal output end 42.
The spark emission probe 1 and 2 layering interval of seismic receiving probe are embedded in the quasi- prison of earth and rockfill dam dam body
Section is surveyed, and is successively spaced network-like distribution, each spark emission probe 1 and the spark source launch control box 4
Pulse signal output end 42 connect, the trigger signal output end 41 and multi-pass of the spark source launch control box 4 be genuine
The trigger signal input terminal 31 for shaking instrument 3 connects, and the rectified signal input terminal 32 and each seismic receiving of multichannel seismic detector 3 are visited
First 2 connection.First power supply 5 is connect with spark source launch control box 4, gives 4 charging complete of spark source launch control box
After carry out energy reserve.
When needing to carry out seismic wave acquisition, multichannel seismic detector 3 issues trigger signal by trigger signal input terminal 31 and gives
Trigger signal output end 41, spark source launch control box 4 receive i.e. defeated by pulse signal output end 42 after trigger signal
Pulse signal issues electric spark, electric spark explosion by spark emission probe 1 to spark emission probe 1, pulse signal out
Energy is converted into seismic signal output, 4 recording pulse signal output time of spark source launch control box, that is, seismic wave
The output time of signal, while the output time of the seismic signal of record is fed back into multichannel seismic detector 3.Seismic receiving
After probe 2 receives seismic signal, multichannel seismic detector 3, multichannel seismic detector 3 are inputed to by rectified signal input terminal 32
Record the input time of seismic signal.
The another aspect of the utility model proposes a kind of earth stone dam displacement monitoring method that tunneling boring networking is laid, including
Following steps:
Transmitting and the laying of receiving transducer are unfolded along with dam embankment process, do not need additionally to build test gallery, bury
If pipeline, punching or grooving etc..The probe of same layer position uniformly lays cable, and the end of a thread port independent is led to dam slope
Free face, convenient for spark emission probe 1 and seismic receiving probe 2 respectively with spark source launch control box 4 and multi-pass
Road seismic detector 3 connects.
It 1,, will be electric according to default section mileage as shown in Figure 1, when the earth and rockfill dam dam foundation is excavated at specified absolute altitude foundation plane
Spark emission probe 1 buries predeterminated position, backfills and is rolled in advance to covering filler, filler grade fits over dam body filler and sets
Increase fine granules ratio on the basis of meter gradation, is directly exposed in air with reducing probe, makes electric spark blasting energy as far as possible
It is converted into seismic wave rather than sound wave, enhances seimic wave propagation quality and propagation distance.It will be connected later with spark emission probe 1
Distribution cable involve to dam body free face, be convenient for subsequent monitoring when be connected with spark source launch control box 4.
2, as shown in Fig. 2, earth and rockfill dam fills after specifying absolute altitude to first layer, embedded seismic receiving of digging pit at top surface is visited
First 2, seismic receiving probe 2 fills material with surrounding and is fixed and filled and led up with mortar, it is therefore intended that avoids popping one's head in direct with air
Contact improves detection quality.Embedded coverage should not be too large, in order to avoid by pressure break in subsequent dam embankment.
3, it initial alignment: after completing step 1 and step 2, according to connection figure shown in Fig. 3, successively triggers spark emission and visits
First 1, seismic receiving probe 2 carries out detection (as shown in Figure 4) one by one, and by the seismic data received and time data
(output time and input time of seismic signal) storage.This monitoring system mainly uses method of addition principle to carry out Dam body displacement
Measurement, therefore, initial alignment data are extremely important.
4, as shown in figure 5, earth and rockfill dam fills continuation, until dam body lower part has been deformed after next specified elevation, by
One triggering spark emission probe 1 simultaneously records the seismic signal that seismic receiving probe 2 receives, and calculates this using method of addition
The sedimentation and horizontal displacement in stage.
5, after step 4, before fill in next step to dam body, spark emission probe 1 is carried out according to step 1 process
It lays, and carries out initial alignment according to the method for step 3.
6, after step 5, dam body continues to deform, and passes through the high-power electric spark triggering of spark emission probe 1 and ground
Seismic wave receiving transducer 2 measures detection data (seismic data and time data) record dam body dynamic deformation, and according to step 2
Method lays seismic receiving probe 2.
7, above procedure is repeated, until dam embankment finishes, it is that dam embankment finishes shown in Fig. 6, spatial position of popping one's head in
Schematic diagram and constructed monitoring network.Feelings can be developed to deformation tendency long-term in dam body and magnitude by irregular mode
Condition is completely grasped, and to ensure, safe operation provides foundation for a long time in earth and rockfill dam.
The setting of monitoring network and working principle are as follows.
1) institutional framework of monitoring network is as follows: local coordinate system is defined in monitoring section, on first of monitoring section,
Using the axis of dam and section intersection point as origin, x represents horizontal direction, and y represents vertical direction.Probe co-ordinate is (x [l] [m] [n]
[t], y [l] [m] [n] [t]), n-th of transmitting probe for respectively indicating transmitting or receiving transducer m row is sat in the horizontal, vertical of t moment
Mark, m are determined as receiving transducer when being odd number, m is determined as transmitting probe when being even number.All probes use synchronous clock calibrating,
Ensure time consistency.The inbuilt initial position of transmitting probe, corresponding moment t=t0.The longitudinal direction for embedded corresponding points of popping one's head in and lateral
Displacement is then (Δ x [l] [m] [n] [t], Δ y [l] [m] [n] [t]).
2) with reference to the initial coordinate of embedded point, monitoring system passes through people by monitoring data resolving time difference and spread speed
The time difference that work source signal (seismic signal that spark emission probe 1 issues) conducts in earth and rockfill dam filler is changed
It calculates, obtains the update coordinate of dam monitoring point, calculate earth and rockfill dam in (including the sedimentation of different filling crafts and the displacement increment of runtime
And horizontal distortion).By taking first monitoring section as an example, illustrate the Computing Principle of monitoring network.
Receiving transducer coordinate is calculated by transmitting probe, needs two transmitting probes and a receiving transducer.It is supervised with first
Section is surveyed for the 1st, 2 probe of specified absolute altitude foundation plane (i.e. first row) (Fig. 6), probe is determined as transmitting probe,
Initial time t0Coordinate be respectively (x [l] [l] [1] [t0], y [1] [1] [1] [t0]), (x [1] [1] [2] [t0], y [1] [1]
[2][t0]).A row is receiving transducer thereon, and first probe is (x [1] [2] [1] [t0], y [1] [2] [1] [t0]).By synchronization
Clock calculation, transmitting and the pickup time difference of receiving transducer are respectively Δ t1With Δ t2.Seimic wave propagation velocity of wave is,
By of short duration construction or runing time Δ t, it is believed that velocity of wave is basically unchanged, by synchronised clock calculate, transmitting with
The pickup time difference of receiving transducer is respectively Δ t1' and Δ t2', it can establish the following equation,
(3), (4) two equation solutions can obtain new coordinate value (x [1] [2] [l] [t of the point0+ Δ t], y [l] [2] [l]
[t0+Δt]。
The lateral displacement of the point are as follows:
Δx[1][2][1][t0+ Δ t]=(x [1] [2] [1] [t0+Δt]-x[1][2][1][t0]) (5)
The settling amount of the point are as follows:
Δy[1][2][1][t0+ Δ t]=(y [1] [2] [1] [t0+Δt]-y[1][2][1][t0]) (6)
At this point, updating seismic wave propagation speed value according to formula (1), (2) using new coordinate value.
Referring to algorithm above, all receiving transducers of second row can be further obtained with the coordinate value after dam deformation.
Transmitting probe coordinate is calculated by receiving transducer, needs two receiving transducers and a transmitting probe.It is supervised with first
Section is surveyed for the 1st, 2 probe of second row, probe is determined as receiving transducer, initial time t first0Coordinate difference
For (x [1] [2] [1] [t0], y [1] [2] [1] [t0]), (x [1] [2] [2] [t0], y [1] [2] [2] [t0]).Third row is transmitting
Probe, first probe co-ordinate are (x [1] [3] [1] [t0], y [1] [3] [1] [t0]), receive the 1st, 2 probe of second row
After seismic signal, coordinate transformation is carried out referring to algorithm above, all transmitting probes of third row can be further obtained and become with dam body
Coordinate value after shape.
The transmitting of other rows, receiving transducer also can sequentially obtain updated coordinate value.
Based on the initial spatial location respectively popped one's head in network, horizontal displacement and sedimentation, a set of system can be isolated by calculating
System can simultaneously obtain the misalignment of both direction, significantly reduce the workload laid monitoring system and acquire monitoring data.It is disconnected
The node of two sides free face mainly does correction displacement increment and is used on face, while can also be displaced magnitude and be input in monitoring net
In displacement diagram.Data are transferred to behind backstage the deformation that can generate the deformation curve being respectively layered on dam body section and each monitoring point in real time
Time-history curves, and sedimentation and horizontal distortion isogram (Fig. 7).
The transmitting probe and receiving transducer can choose adjacent node substitution in respective level and use.It is unexpected in individual probes
In the case where damage, this monitoring system still is able to meet to dam deformation by the amendment of adjacent several node probe datas
Quantitative Monitoring analysis.Fig. 7 show complete monitoring network and seimic wave propagation network diagram.It can be seen that in this system
In, the transmitting-receiving of data has the attribute of " multi-to-multi ", ensures that system remains to effectively run in individual tip damages, this is also this
The important leverage of long-term displacement monitoring stability in system.
When irregularly being monitored to Dam body displacement, spark source launch control box 4 and multichannel earthquake need to be only carried
Instrument 3 can carry out displacement monitoring with being led in advance to the cable port that downstream side dam slope faces sky to be connected.In certain distance, pass through
The man-made explosion signal for receiving itself triggering, using the phase difference monitoring earth and rockfill dam transmitted in earth and rockfill dam in different filling crafts and fortune
The displacement increment (including sedimentation and horizontal distortion) on the departure date achievees the purpose that medium-term and long-term monitoring earth and rockfill dam tunneling boring deformation with this.
From principle, this method may be high not as good as distribution type fiber-optic precision, but earth and rockfill dam dam deformation reaches Centimeter Level
It just has been able to well be dam deformation monitoring service, makes accurate judgment for dam deformation development trend and foundation is provided,
The monitoring pattern of networking " multi-to-multi " keeps its stability advantage very prominent, allow work progress in and long-term conditions under part
Transmitting probe or receiving transducer damage, can significantly make up part of nodes shortage of data by the Data correction of adjacent node
The problem of.
Application example:
1, the exploratory hole (anhydrous) of a diameter 10cm, depth 5m are bored with drilling machine in the more uniform open area of certain earth formation,
Spark emission probe 1 is put to access hole lower position using Motorized lift device, and fills sand into hole, filling probe and hole wall
Between gap, avoid probe be directly exposed in air, be converted into ground to improve gas burst vibrational energy after subsequent igniting
The ratio of seismic wave.
2, the accurately seismic wave receiving transducer 2 of earth's surface serial distribution three over about 30m distance, inserts a probe into mud
Soil is accurate to a centimetre record using the distance between tape measuring spark emission probe 1 and three seismic receiving probes 2.
3, according to Fig. 4 by spark emission pop one's head in 1, spark source launch control box 4, spark source launch control box
4, the connection such as multichannel seismic detector 3 and power supply and fuel cartridge is appropriate, and label carries out seismic wave near spark emission probe 1
The calibration measurement of velocity of wave can be attempted repeatedly to be averaged.
4, it to spark emission 1 accumulation of energy of probe and is lighted a fire by spark source launch control box 4, utilizes multichannel earthquake
Instrument 3 connects seismic receiving probe 2, acquires data and is transmitted to backstage.
5, seismic receiving signal shown in Fig. 8 is obtained by data processing from the background, by catching to seismic wave phase difference
Catch, and the seismic wave velocity of tape measuring data and calibration calculates comparison before, measurement accuracy error in 2cm or so,
It can satisfy the requirement of earth and rockfill dam deformation monitoring.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
It is any to belong to those skilled in the art within the technical scope disclosed by the utility model in this, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.
Claims (4)
1. the earth stone dam displacement that a kind of tunneling boring networking is laid monitors system, it is characterised in that: pop one's head in including spark emission
(1), seismic receiving probe (2), multichannel seismic detector (3), spark source launch control box (4)；The multichannel earthquake
Instrument (3) has trigger signal input terminal (31) and rectified signal input terminal (32), spark source launch control box (4) tool
There are trigger signal output end (41) and pulse signal output end (42)；The spark emission probe (1) and the seismic wave connect
It receives probe (2) layering interval and is embedded in the quasi- monitoring section of earth and rockfill dam dam body, and be successively spaced network-like distribution, each electric spark
Transmitting probe (1) is connect with the pulse signal output end (42) of the spark source launch control box (4), the electric spark shake
The trigger signal output end (41) of source launch control box (4) is connect with the trigger signal input terminal (31) of multichannel seismic detector (3),
The rectified signal input terminal (32) of multichannel seismic detector (3) is connect with each seismic receiving probe (2).
2. the earth stone dam displacement that tunneling boring networking as described in claim 1 is laid monitors system, it is characterised in that: further include
The first power supply (5) being connect with spark source launch control box (4).
3. the earth stone dam displacement that tunneling boring networking as described in claim 1 is laid monitors system, it is characterised in that: further include
The second source (6) being connect with multichannel seismic detector (3).
4. the earth stone dam displacement that tunneling boring networking as described in claim 1 is laid monitors system, it is characterised in that: multichannel
Seismic detector (3) issues trigger signal by trigger signal input terminal (31) and gives trigger signal output end (41), spark source hair
It penetrates after control cabinet (4) receives trigger signal and is popped one's head in by pulse signal output end (42) output pulse signal to spark emission
(1), pulse signal issues electric spark by spark emission probe (1), and it is defeated that electric spark blasting energy is converted into seismic signal
Out, spark source launch control box (4) recording pulse signal output time, that is, the output time of seismic signal, simultaneously
The output time of the seismic signal of record is fed back to multichannel seismic detector (3), seismic receiving probe (2) receives earthquake
It after wave signal, is inputed to multichannel seismic detector (3) by rectified signal input terminal (32), multichannel seismic detector (3) records earthquake
The input time of wave signal.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917450A (en) * | 2019-04-10 | 2019-06-21 | 长江水利委员会长江科学院 | A kind of earth stone dam displacement monitoring system and method that tunneling boring networking is laid |
| CN111102946A (en) * | 2019-12-18 | 2020-05-05 | 湖北省电力勘测设计院有限公司 | Tunnel deformation monitoring method based on ultrasonic waves |
-
2019
- 2019-04-10 CN CN201920478397.3U patent/CN209460413U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917450A (en) * | 2019-04-10 | 2019-06-21 | 长江水利委员会长江科学院 | A kind of earth stone dam displacement monitoring system and method that tunneling boring networking is laid |
| CN109917450B (en) * | 2019-04-10 | 2024-02-06 | 长江水利委员会长江科学院 | Full-section networked land and stone dam displacement monitoring system and method |
| CN111102946A (en) * | 2019-12-18 | 2020-05-05 | 湖北省电力勘测设计院有限公司 | Tunnel deformation monitoring method based on ultrasonic waves |
| CN111102946B (en) * | 2019-12-18 | 2021-11-23 | 湖北省电力勘测设计院有限公司 | Tunnel deformation monitoring method based on ultrasonic waves |
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