CN106547030B - Dam leakage electric field 3-D scanning automatic detection device and method - Google Patents
Dam leakage electric field 3-D scanning automatic detection device and method Download PDFInfo
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- CN106547030B CN106547030B CN201610900940.5A CN201610900940A CN106547030B CN 106547030 B CN106547030 B CN 106547030B CN 201610900940 A CN201610900940 A CN 201610900940A CN 106547030 B CN106547030 B CN 106547030B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/088—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with electric fields
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a kind of dam leakage electric field 3-D scanning automatic detection devices, its multi-frequency electric field signal transmitter is placed on dykes and dams, electric field cathode is arranged in the water body in dykes and dams upstream apart from 200 meters~1000 meters of suspicious breakthrough, electric field anode is arranged in the water body in dykes and dams downstream, electric field cathode connects the negative terminals of electric field signal transmitter, electric field anode connects the positive terminal of electric field signal transmitter, and the electric field anode, multi-frequency electric field signal transmitter, electric field cathode and suspicious breakthrough are formed for electric field circuit；Live reception system is used for being detected for electric field circuit, and can determine that electric field Nesting Zone, to track the position of dam leakage point.The present invention can carry out dam leakage point automatic tracking and quickly find.
Description
Technical field
The present invention relates to geophysical probing technique fields, are visited automatically in particular to a kind of dam leakage electric field 3-D scanning
Survey device and method.
Background technology
For a long time, domestic many researchers are never interrupted always the research of dykes and dams monitoring of leakage technology,
It makes some progress, but the research work of explanation of accurate positionin and qualitative, quantitative for dykes and dams leakage etc. is still
There are many deficiencies.It, especially can be in flood season there are no dyke defect detecting is completely suitable in terms of the data grasped at present
Rapidly and accurately detect the monitoring device of dykes and dams dangerous situation.Meanwhile although the principle of detection of hidden troubles in dams with look for mine exploration, geology it is general
Look into that the principle reconnoitred with common engineering in field is identical, the latter is according to different rock soil mediums often in density, magnetism, conduction
There is differences for property, elasticity, radioactivity etc., so as to cause the localized variation of corresponding geophysical field；At present by using
Special instrument detects distribution and the variation characteristic of these geophysical fields, knows geologic information then in conjunction with oneself, heuristically descends rock
Buried depth, thickness, the property of soil, judge its geological structure, hydrogeologic condition and various physically matter phenomenon.
The Hidden Danger Detection technology of all kinds of dykes is again based on the various dykes and dams normal fields built up along ground and leaks field
Difference in the physical properties such as density, magnetism, electric conductivity, elasticity, radioactivity, before having the physics using various geophysical prospecting methods
It carries, with different technical method and geophysical prospecting equipment, the variation of natural or artificial geophysical field is detected, by analyzing, grinding
Study carefully obtained Use of Geophysical Data and experience is inferred, explains that geological structure and dykes and dams leak distribution situation.
Currently, detection of hidden troubles in dams method mainly has 3 kinds of geological drilling, artificial visiting and geophysical exploration etc., still
First two method cannot meet the requirements such as quick, accurate, large area non-destructive testing, and quickly, can continuity scanning, represent
The effective ways of wide, the lossless triage of property, can mainly be summarized as transient electromagnetic method, High Density Resistivity, geologic radar detection method,
Transient electromagnetic method, shallow earthquake method, flow field method, underground magnetic fluid probe method etc..The room of Chinese Water Conservancy water power Science Institute is pure
Guiding principle etc. proposes based on seepage place conductivity "abnormal" and then detects the transient electromagnetic method for determining dykes and dams hidden danger in dry season and flood
The water phase has carried out dykes and dams actual measurement comparison work in East Dongting Lake fiber crops pool hole dike, big Mao Jia Hu Di, verifies the validity of this method；
The it is proposeds such as the Wang Chuanlei of China University of Geosciences High Density Resistivity monitors dykes and dams hidden danger, and this method builds ground with dykes and dams
Based on resistivity contrasts, is repeatedly observed repeatedly by fixed point and manually establish electric current field distribution to study dykes and dams hidden danger and dynamic change
Change, and has carried out various simulated experiments and dykes and dams actual measurement；Flow field method is by analyzing current field and dykes and dams leakage flow
Field physics, some similitudes mathematically under certain condition, the water flow field of fitting dykes and dams leakage is removed with electromagnetic field, between
It connects and detects leakage water flow field, which can determine the source of dam leakage, but not know percolating water inside reservoir dam
Flow direction and path.Secondly, although transient electromagnetic method is not limited by environment, ground resistance, investigation depth is big, when by big gold
When belonging to the interference of medium, result of detection is still to be tested, to increase other detection method comparison supplements.These methods, Neng Gou
Dykes and dams hidden danger is different from the electrical property difference of surrounding medium in monitor dykes and dams certain depth to a certain extent and its dynamic becomes
Change process, can play the generation and evolution of dam leakage certain monitoring and early warning, and result of detection is only capable of as dike
The reference of anti-renovation.
Underground magnetic fluid probe method is using Natural electromagnetic field as work field source, and the characteristic information of the different geologic body in underground is with day
Right electromagnetic wave is carrier, and penetrates the different rock stratum of the earth's crust with it and be transferred to earth's surface, is produced on ground by measuring nagneto-telluric field
Raw electric field change feature understands the electrical property difference of underground electricity section, inverting geologic structure, determines percolation zone etc..Underground magnetic current
The advantage of body Detection Techniques is：Using Natural electromagnetic field, as work field source, at low cost, work efficiency is high；But there is also one
It is a little insufficient：Detectable signal is faint, and the theory of research does not form a system, and existing instrument is in terms of advanced and reliability
Also it is short of.
In summary the advantage and disadvantage of various detection methods, for this purpose, we have proposed dam leakage electric field 3-D scanning is automatic
Detection device and method detect the electric field three-dimensional that tracking is generated for electric field to analyze the position for inferring dam leakage point.
It is quickly searched to be leaked to dykes and dams, the problem not unique relative to traditional leakage detection method structure, detection is relatively reliable.
Bibliography：
[1] Beijing Song Hanzhou dams environmental hydrogeology research [M]:Chinese Water Conservancy water power publishing house, 2007；
[2] Shu Qingpeng, agate beautiful jade dyke defect detectings technology application pre-test [J] Chinese Water Conservancies, 2000, (5):51-52；
[3] soil Kong Wei, Zhou Jinlong engineering geology and the Henan water level geology [M]:The Yellow River water conservancy publishing house, 2009；
[4] application [[J] Zhejiang Water water power training of the Wang Haibin High Density Resistivities in dyke defect detecting
School journal, 2010,22 (2):31-34；
The transient electromagnetic methods such as [5] Fang Chungang, Ge Huai light detect hidden defect of levee and leakage [J] dam observations and are surveyed with geotechnique
Examination, 2001,25 (4):30-32；
[6] Zou Shengjie, Tang Jing W. levee piping and seepage control real time monitoring researchs with application [[J] water conservancy and hydropower technologies,
2005,36(1):77-79；
[7] soil pass thunder, the such as Dong Haobin geophysical prospecting technologies monitoring dam hidden danger on application [[J] physical prospectings with change visit,
2001,25(4):294-299；
[8] cold ingot, and the flow fields the such as Li Yuelun method detection dike piping leakage new technology [[J] people the Yellow River, 2001,23
(11):36-37；
[9] cold ingot, red legend Zhong Deng China's dam hidden dangers and the leakage detection state of the art and prospect [J] water conservancy and hydropowers section
Skill is in progress, 2002,22 (2):59-62；
Intend application [J] the works of Jie's method in the embankment blowout leakage detection of Hongchehu Lake in the flow fields the such as [10] Zhu Ziqiang, Zou Shengjie
Journey Chinese Journal of Geophysics, 2004,1 (3):243 1 246；
[11] Chongqing resistivity imaging diagnostic test research [D] that east earth and rockfill dams leak more than:Chongqing Jiaotong University,
2010；
[12] Huang Cailun, the underground magnetic fluids Detection Techniques such as sword and application assay certificate " Z] Science and Technology Department of the Hunan Province:
2007020,2007-5-25；
The such as [13] Yang Rongfeng, Zhang Keneng determine interflow subsurface drainage channel using the dynamic and static information of self potential frequency method
[J] coal science and technologies, 2003,31 (4), 25-27.
Invention content
Present invention aim to provide a kind of dam leakage electric field 3-D scanning automatic detection device and method, pass through
The device and method can carry out dam leakage point automatic tracking and quickly find.
In order to achieve this, the dam leakage electric field 3-D scanning automatic detection device designed by the present invention, feature exist
In：It includes multi-frequency electric field signal transmitter, electric field cathode, electric field anode and live reception system；
The multi-frequency electric field signal transmitter is placed on dykes and dams, and the setting of electric field cathode is oozed in dykes and dams upstream apart from suspicious
In the water body that 200 meters~1000 meters of leak source, electric field anode is arranged in the water body in dykes and dams downstream, and electric field cathode connects electric field signal
The negative terminals of transmitter, electric field anode connect the positive terminal of electric field signal transmitter, the electric field anode, multi-frequency
Electric field signal transmitter, electric field cathode and suspicious breakthrough can be formed with dykes and dams upstream water body and dykes and dams downstream water for electric field
Circuit；
The scene reception system is used for being detected for electric field circuit, and can determine that electric field Nesting Zone, to chase after
Track is to the position of dam leakage point.
A method of it carrying out dam leakage electric field 3-D scanning using above-mentioned detection device and detects, which is characterized in that it
Include the following steps：
Step 1：Multi-frequency electric field signal transmitter is opened, by electric field cathode and electric field anode to dykes and dams upstream and dykes and dams
The water body in downstream is powered, and at this moment can gather electric current by the breakthrough of dykes and dams for electric field forms by electric field anode, multi-frequency electricity
What field signal transmitter, electric field cathode, suspicious breakthrough, dykes and dams upstream water body and dykes and dams downstream water were constituted returns for electric field
Road, multi-frequency electric field signal transmitter to for electric field circuit provide different frequency one group of electric field；
Step 2：By the installation of live reception system on the water on carrier, and by five pole three-dimensional electric field probe receivers, sound
It receives detection sensor and GPS (Global Positioning System, global positioning system) sensor and places in water, five poles
Three-dimensional electric field probe receiver, sonar detection sensor and GPS sensor constitute sensing point；
Step 3：Live receiving host receives five pole three-dimensional electric field probe receivers, sonar detection sensor and GPS and passes
The signal of sensor output, and determine according to above-mentioned signal the three-dimensional of electric field, the depth of water of sensing point and the spy of current sensing point
The position coordinates of measuring point；
Step 4：The position for changing sensing point according to the three-dimensional of electric field is tracked detection, and repeats the behaviour of step 3
Make, so that live receiving host is determined the electric field maximum region of dykes and dams upstream, which is breakthrough.
The present invention is mainly manifested in compared to existing dam leakage detecting devices and method, beneficial effects of the present invention：
(1) since dam leakage point is current collection region, using the present invention, direct detection has gone out the side for electric field
To tracking the direction of electric field, can quickly search out the breakthrough of dykes and dams；In addition, the present invention can greatly reduce detection quantity, section
It saves time and cost, improves working efficiency.
(2) it using the present invention, realizes one group of electric field transmitting of different frequency, the jamming pattern at scene can be avoided；Therefore,
Identification and the processing capacity that small-signal can be improved can ensure that result of detection is accurate and reliable in this way.
(3) using the present invention, real-time display result of detection when live host detection, automatic tracing electric field side may be implemented
To the position until tracking dam leakage point, without complicated artificial data analysis and processing stage.
Therefore, the device of the invention has the advantages that operability, validity and practicability, for country embankment safety and
The property of the people provides safeguard.
Description of the drawings
Fig. 1 is the use state diagram of structure of the invention part；
Fig. 2 is the structure diagram of live reception system in the present invention；
Fig. 3 is the structure chart that electric field probe is connect with live receiving host in the present invention；
Wherein, 1-dykes and dams upstream, 2-dykes and dams downstreams, 3-suspicious breakthroughs, 4-dykes and dams, 5-multi-frequency electric field signals
Transmitter, 6-electric field cathode, 7-electric fields anode, 8-live reception systems, 8.1-live receiving hosts, 8.2-five poles three
Tie up electric field signal receiving transducer, 8.3-sonar detection sensors, 8.4-GPS sensors, 8.5-insulation club shafts, 8.6-copper
Ring electrode, 9-carriers waterborne
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
Dam leakage electric field 3-D scanning automatic detection device as shown in Figures 1 to 3, it includes multi-frequency electric field signal hair
Penetrate machine 5, electric field cathode 6, electric field anode 7 and live reception system 8；
The multi-frequency electric field signal transmitter 5 is placed on the home at 4 top of dykes and dams, and electric field cathode 6 is arranged in dike
In water body of the dam upstream 1 apart from suspicious breakthrough 3,200 meters~1000 meters (range ensures that it is uniform electric field to survey area), electric field is just
Pole 7 is arranged in the water body in dykes and dams downstream 2, and electric field cathode 6 connects the negative terminals of electric field signal transmitter 5, electric field anode 7
Connect the positive terminal of electric field signal transmitter 5, the electric field anode 7, multi-frequency electric field signal transmitter 5, electric field cathode 6
It can be formed for electric field circuit with 1 water body of dykes and dams upstream and 2 water body of dykes and dams downstream with suspicious breakthrough 3；
The scene reception system 8 is used for being detected for electric field circuit, and can determine that electric field Nesting Zone, to chase after
The position of track to dam leakage point (since breakthrough is the place that electric field gathers, can thus be chased after according to three-dimensional electric field direction
Track is to the position of dam leakage point).
In above-mentioned technical proposal, the scene reception system 8 includes live receiving host 8.1, five pole three-dimensional electric field signals
Receiving transducer 8.2, sonar detection sensor 8.3 and GPS sensor 8.4, the electric field signal input of the scene receiving host 8.1
The signal output end of five pole three-dimensional electric field probe receivers 8.2 of end connection, the sonar detection signal of live receiving host 8.1 are defeated
Enter the signal output end of end connection sonar detection sensor 8.3, the GPS signal input terminal connection GPS of live receiving host 8.1 is passed
The signal output end of sensor 8.4.
In above-mentioned technical proposal, the scene receiving host 8.1 is arranged on carrier 9 on the water, five pole three-dimensional electric field signals
Receiving transducer 8.2, sonar detection sensor 8.3 and GPS sensor 8.4 are located in the water body of dykes and dams upstream 1.
In above-mentioned technical proposal, the five pole three-dimensional electric field probe receiver 8.2 include three five pole insulating bars, three
Five pole insulating bars are vertical between each other, and every five pole insulating bars include insulation club shaft 8.5 and fixing sleeve in insulation club shaft
Five copper ring electrodes 8.6 on 8.5, the copper ring electrode 8.6 often thoroughly done away on edge club shaft 8.5 connect scene by conducting wire respectively and connect
Receive the electric field signal input terminal of host 8.1.Five is great there are four section, can measure four values, according to the size of value, can sentence
The big section of definite value is one direction of current collection, and three axis are to measure three aggregation directions of electric current it is determined that electric current
Stereoscopic three-dimensional, to be more easy to the accumulation point of Cutoff current, that is, breakthrough.
In above-mentioned technical proposal, five copper ring electrodes 8.6 on each insulation club shaft 8.5 are mutually parallel.
In above-mentioned technical proposal, the distance between two neighboring copper ring electrode 8.6 is equal, and distance range is 1 meter~2
Rice.
In above-mentioned technical proposal, the sonar detection sensor 8.3 is mounted on the intersection position of three five pole insulating bars, uses
In the depth of water of detection measuring point.The GPS sensor 8.4 is mounted on the intersection position of three five pole insulating bars, for measuring measuring point
Coordinate position.Above-mentioned intersection point is that three-dimensional measures joint, is the starting point of Current calculation, therefore sonar detection sensor
8.3 and GPS sensor 8.4 point of intersection is installed and can improve the accuracy of detection.
A method of it carrying out dam leakage electric field 3-D scanning using above-mentioned detection device and detects, which is characterized in that it
Include the following steps：
Step 1：Dam leakage electric field 3-D scanning automatic detection device is installed according to above structure, opens multifrequency
Rate electric field signal transmitter 5 is powered by electric field cathode 6 and electric field anode 7 to the water body in dykes and dams upstream 1 and dykes and dams downstream 2, this
When for electric field can be gathered by the breakthrough of dykes and dams 4 electric current formed by electric field anode 7, multi-frequency electric field signal transmitter 5, electricity
Cathode 6, suspicious breakthrough 3,1 water body of dykes and dams upstream and 2 water body of dykes and dams downstream constitute for electric field circuit, multi-frequency electric field
Signal transmitter 5 to for electric field circuit provide different frequency one group of electric field (0.2Hz, 0.4Hz, 0.6Hz, 0.8Hz,
1.0Hz, 2.0Hz, 4.0Hz, 6.0Hz, 8.0Hz, 10Hz, the electric field signal of 10 frequencies, the test effect of above-mentioned 10 frequencies
It can be mutually authenticated, exclude have the one-sidedness that reaction is just drawn a conclusion because of a kind of frequency, ensure the accuracy of detection)；
Step 2：By the installation of live reception system 8 on the water on carrier, and by five pole three-dimensional electric field probe receivers
8.2, sonar detection sensor 8.3 and GPS sensor 8.4 are placed in water, five pole three-dimensional electric field probe receivers 8.2, sonar
Detection sensor 8.3 and GPS sensor 8.4 constitute sensing point；
Step 3：Live receiving host 8.1 receives five pole three-dimensional electric field probe receivers 8.2, sonar detection sensor
8.3 and the signal that exports of GPS sensor 8.4, and determine according to above-mentioned signal the three-dimensional of the electric field of current sensing point, detection
The position coordinates of the depth of water and sensing point of point；
Step 4：The position for changing sensing point according to the three-dimensional of electric field is tracked detection, and repeats the behaviour of step 3
Make, live receiving host 8.1 is made to determine the electric field maximum region of dykes and dams upstream 1, which is to leak
Point.
Step 5：When sensing point is in electric field maximum region, the breakthrough depth of water is determined by sonar detection sensor 8.3,
And the coordinate position of breakthrough is determined by GPS sensor 8.4.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of dam leakage electric field 3-D scanning automatic detection device, it is characterised in that：It includes multi-frequency electric field signal hair
Penetrate machine (5), electric field cathode (6), electric field positive (7) and live reception system (8)；
The multi-frequency electric field signal transmitter (5) is placed on dykes and dams (4), electric field cathode (6) setting dykes and dams upstream (1) away from
In water body of (3) 200 meters~1000 meters from suspicious breakthrough, electric field anode (7) is arranged in the water body of dykes and dams downstream (2), electricity
Field cathode (6) connects the negative terminals of electric field signal transmitter (5), electric field anode (7) connection electric field signal transmitter (5)
Positive terminal, the electric field positive (7), multi-frequency electric field signal transmitter (5), electric field cathode (6) and suspicious breakthrough (3)
It can be formed for electric field circuit with dykes and dams upstream (1) water body and dykes and dams downstream (2) water body；
The scene reception system (8) is used for being detected for electric field circuit, and can determine that electric field Nesting Zone, to track
To the position of dam leakage point；
The scene reception system (8) includes live receiving host (8.1), five pole three-dimensional electric field probe receivers (8.2), sound
Receive detection sensor (8.3) and GPS sensor (8.4), the electric field signal input terminal connection five of the scene receiving host (8.1)
The signal output end of pole three-dimensional electric field probe receiver (8.2), the sonar detection signal input part of live receiving host (8.1)
The signal output end of sonar detection sensor (8.3) is connected, the GPS signal input terminal connection GPS of live receiving host (8.1) is passed
The signal output end of sensor (8.4)；
The five pole three-dimensional electric field probe receiver (8.2) includes three five pole insulating bars, three five pole insulating bars mutually it
Between it is vertical, every five pole insulating bars include insulation club shaft (8.5) and fixing sleeve in five copper on club shaft (8.5) that insulate
Ring electrode (8.6), the copper ring electrode (8.6) often thoroughly done away on edge club shaft (8.5) connect live receiving host by conducting wire respectively
(8.1) electric field signal input terminal.
2. dam leakage electric field 3-D scanning automatic detection device according to claim 1, it is characterised in that：The scene
Receiving host (8.1) is arranged on carrier (9) on the water, five pole three-dimensional electric field probe receivers (8.2), sonar detection sensor
(8.3) it is located in the water body of dykes and dams upstream (1) with GPS sensor (8.4).
3. dam leakage electric field 3-D scanning automatic detection device according to claim 1, it is characterised in that：It is each described
Five copper ring electrodes (8.6) on insulation club shaft (8.5) are mutually parallel.
4. dam leakage electric field 3-D scanning automatic detection device according to claim 1, it is characterised in that：It is two neighboring
The distance between copper ring electrode (8.6) is equal, and distance range is 1 meter~2 meters.
5. dam leakage electric field 3-D scanning automatic detection device according to claim 1, it is characterised in that：The sonar
Detection sensor (8.3) is mounted on the intersection position of three five pole insulating bars, the depth of water for detecting measuring point.
6. dam leakage electric field 3-D scanning automatic detection device according to claim 1, it is characterised in that：The GPS
Sensor (8.4) is mounted on the intersection position of three five pole insulating bars, the coordinate position for measuring measuring point.
7. a kind of method carrying out the detection of dam leakage electric field 3-D scanning using detection device described in claim 1, feature
It is, it includes the following steps：
Step 1：Multi-frequency electric field signal transmitter (5) is opened, by electric field cathode (6) and electric field anode (7) to dykes and dams upstream
(1) it powers with the water body of dykes and dams downstream (2), at this moment can gather electric current by the breakthrough of dykes and dams (4) for electric field forms by electricity
Positive (7), multi-frequency electric field signal transmitter (5), electric field cathode (6), suspicious breakthrough (3), dykes and dams upstream (1) water body and
Dykes and dams downstream (2) water body constitute for electric field circuit, multi-frequency electric field signal transmitter (5) provides not to for electric field circuit
One group of electric field of same frequency；
Step 2：By the installation of live reception system (8) on the water on carrier, and by five pole three-dimensional electric field probe receivers
(8.2), sonar detection sensor (8.3) and GPS sensor (8.4) are placed in water, five pole three-dimensional electric field probe receivers
(8.2), sonar detection sensor (8.3) and GPS sensor (8.4) constitute sensing point；
Step 3：Live receiving host (8.1) receives five pole three-dimensional electric field probe receivers (8.2), sonar detection sensor
(8.3) and the signal of GPS sensor (8.4) output determined, and according to above-mentioned signal the electric field of current sensing point three-dimensional,
The depth of water of sensing point and the position coordinates of sensing point；
Step 4：The position for changing sensing point according to the three-dimensional of electric field is tracked detection, and repeats the operation of step 3, makes
Live receiving host (8.1) determines the electric field maximum region of dykes and dams upstream (1), which is to leak
Point.
8. the method according to claim 7 for carrying out the detection of dam leakage electric field 3-D scanning, it is characterised in that：Step 4
After further include step 5：When sensing point is in electric field maximum region, breakthrough water is determined by sonar detection sensor (8.3)
Deeply, and by GPS sensor (8.4) coordinate position of breakthrough is determined；
In the step 1, one group of electric field of different frequency is 0.2Hz, 0.4Hz, 0.6Hz, 0.8Hz, 1.0Hz, 2.0Hz,
4.0Hz, 6.0Hz, 8.0Hz, 10Hz, the electric field signal of 10 frequencies.
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| CN106950602A (en) * | 2017-05-12 | 2017-07-14 | 黑龙江省水利科学研究院 | The device and method of constant-current field method detection dam seepage entry position |
| CN109668938B (en) * | 2018-12-13 | 2024-01-09 | 长江水利委员会长江科学院 | Device and method for detecting three-dimensional magnetic resistivity of embankment leakage channel |
| CN109946370A (en) * | 2019-02-19 | 2019-06-28 | 中南大学 | A kind of dam leakage passage detection method and its device based on magnetic-field measurement |
| CN110824567B (en) * | 2019-09-30 | 2020-12-22 | 中南大学 | Device for quickly positioning leakage point of ditch and control method thereof |
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| CN115356051A (en) * | 2022-08-12 | 2022-11-18 | 吉林大学 | Dam leakage monitoring system and method and electronic equipment |
| CN117031551B (en) * | 2023-08-10 | 2024-01-30 | 水利部交通运输部国家能源局南京水利科学研究院 | Method and system for tour inspection of intelligent unmanned vehicle traversing station in dam engineering |
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