CN109031428A - A kind of hilly pond embankment seepage detection method - Google Patents
A kind of hilly pond embankment seepage detection method Download PDFInfo
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- CN109031428A CN109031428A CN201810389725.2A CN201810389725A CN109031428A CN 109031428 A CN109031428 A CN 109031428A CN 201810389725 A CN201810389725 A CN 201810389725A CN 109031428 A CN109031428 A CN 109031428A
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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
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
Abstract
The invention discloses a kind of hilly pond embankment seepage detection methods.It obtains hilly pond essential information by field research, select hilly pond in high water level, the method combined using geologic radar detection technology with high-density electric, hilly pond dam body there are leakage problems is detected and acquires data, editing and processing, data analysis and inverting are carried out to the data of acquisition to obtain result map, in conjunction with hilly pond geologic information, result map is explained, determines leak location.The beneficial effects of the present invention are: the Quick Acquisition and MICROCOMPUTER PROCESSING of data may be implemented, to change the traditional working mode of electrical prospecting, the specific location of embankment seepage can quickly and accurately be found out, and determine its leak magnitude, it greatly improves work efficiency, labor intensity is alleviated, the intelligence degree of electrical prospecting is made to stride forward a step.
Description
Technical field
The present invention relates to electromagnetic sounding correlative technology fields, refer in particular to a kind of hilly pond embankment seepage detection method.
Background technique
Hilly pond is field irrigation, agricultural production and rural potable water as important small on-farm water infrastructures infrastructure
Supply plays a significant role.Leakage is always a major reason for causing dam body to go wrong, and China is to 2000 dam breaks
It analyzes and counts, discovery dam break caused by leaking is more than 30%, if leakage problems are handled not in time, by certain time
Accumulation, will change from small to big and evolve into piping, seriously affect the normal operation of water conservancy projects, life-threatening safety causes wealth
Produce loss.Therefore, in order to ensure the normal safe operation of the hydraulic engineerings such as reservoir, hilly pond, it must just take method appropriate quasi-
The specific location of embankment seepage is really quickly found out, and determines its leak magnitude.
Summary of the invention
The present invention is that in order to overcome the above deficiencies in the prior art, infiltration can quick and precisely be found out by providing one kind
Leak the hilly pond embankment seepage detection method of position.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of hilly pond embankment seepage detection method obtains hilly pond essential information by field research, selects hilly pond in high water level
When, the method combined using geologic radar detection technology with high-density electric, to there are the progress of the hilly pond dam body of leakage problems
Data are detected and acquired, editing and processing, data analysis and inverting are carried out to obtain result map, in conjunction with hilly pond to the data of acquisition
Matter data, explains result map, determines leak location.
Good heat-insulation effect is achieved the purpose that and the acoustic material service life is long and soundproof effect is good.
Preferably, the geologic radar detection technology is to determine that media interior substance is distributed with high frequency radio wave
A kind of geophysical method of rule, the basic principle is that theoretical based on frequency electromagnetic waves, geological radar utilizes frequency electromagnetic waves,
It is directed with impulse form by transmitting antenna and is sent into underground, reflection is generated when electromagnetic pulse encounters different electrical interfaces or dissipated
It penetrates, reflection signal is received by receiving antenna, is analyzed and processed by waveform, the amplitude to the radar wave received, obtains ground
The feature of lower objective body.
Preferably, radar Electromagnetic pulse propagation is mainly influenced by the electrical property difference of underground medium, the electrical property feature of medium
Including conductivity and dielectric constant, the former affects propagation depth, and the latter affects spread speed, and the detection of geological radar is deep
Degree is only influenced by electromagnetic wave propagation time T and spread speed V in same medium, and radar is propagated depth D and can be obtained by following formula:
In formula, C is the spread speed of electromagnetic wave in an atmosphere,It is relative dielectric constant, differing dielectric constantMedium pair
Radar wave propagation has differential responses, and when carrying out radar detection in same uniformly densely medium, radar image reflection is
The continuous back wave of axis in the same direction, and when the reflection of radar wave for encountering electric characteristic abnormality interface is abnormal, so that receiving antenna receives
To radar image show abnormality, so that it is determined that subsurface anomaly.
Preferably, geologic radar detection technology uses profile method, i.e. dual-mode antenna is same along survey line with constant spacing simultaneously
Moved further is detected, the final radar image for obtaining record time section.
Preferably, the high-density electric is one based on the electrical property difference of Underground objective body and country rock
Kind geophysical exploration method, specifically:, only need to be by pole layout on the measuring point of certain intervals when surveying at the scene, measuring point
Density ratio conventional resistive rate it is small, be then connected on program control type multi-electrode change-over switch with multicore cable, measurement letter
Number microcomputer engineering electrical measuring instrument is sent by electrode change-over switch, and measurement result is sequentially stored into random access memory.
Preferably, the spaced design is 1-10m, electrode change-over switch be it is a kind of by monolithic processor controlled electrode from
Turn changing device, the as needed automatic conversion for carrying out electrode automatic transfer equipment form, electrode spacing and measuring point.
Preferably, in measurement process, electric current I is fed by electrodes of A, current electrode B, using measuring electrode M,
Measuring electrode N measures potential difference Δ U and calculates apparent resistivity, and when measuring uniform ground resistivity, earth's surface any two is surveyed
Measure the current potential of electrode M, measuring electrode N are as follows:
Wherein,For uniform ground resistivity, AM, BM, AN, BN be respectively A, B between M, N at a distance from, above two formula is subtracted each other
The potential difference of M, N point-to-point transmission can be obtained are as follows:
Uniform ground resistivity expression formula is obtained by above formula are as follows:
K is electrode coefficient in formula, unit is rice, it is determined by interelectrode relative position, in actual operation, obtained electricity
Resistance rate is actually the combined influence value of landform and various geology body resistivities in electric field effective range, i.e. apparent resistivity, is passed throughApparent resistivity value is sought, when there is leakage in hilly pond dam body, blowby area resistivity shows relative to surrounding
Notable difference obtains leak location by resistivity contrasts.
The beneficial effects of the present invention are: the Quick Acquisition and MICROCOMPUTER PROCESSING of data may be implemented, surveyed to change electrical method
The traditional working mode of spy can quickly and accurately find out the specific location of embankment seepage, and determine its leak magnitude, significantly
It improves work efficiency, alleviates labor intensity, the intelligence degree of electrical prospecting is made to stride forward a step.
Detailed description of the invention
Fig. 1 is the working principle diagram of high-density electric.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
A kind of hilly pond embankment seepage detection method obtains hilly pond essential information by field research, selects hilly pond in height
When water level, the method combined using geologic radar detection technology with high-density electric, to there are the hilly pond dam bodys of leakage problems
Data are detected and acquired, editing and processing, data analysis and inverting are carried out to the data of acquisition to obtain result map, in conjunction with mountain
Pool geologic information, explains result map, determines leak location.
Geological radar is a kind of electromagnetic surveying technology, and principle is by underground medium to wide spectrum electromagnetic wave (107-109Hz)
Different responses definitely descend the geophysical method of dielectric distribution feature.In actual application, geological radar is to underground
The short pulse electromagnetic wave of a certain centre frequency of medium emission.Electromagnetic wave is propagated in the different medium of underground, amplitude, phase and frequency
Different variations can also occur for rate.It reflects when encountering different electrical interfaces, is recorded by the receiving antenna of geological radar
Return to the electromagnetic wave signal on ground.It include the electrical property feature of underground medium in the electromagnetic wave signal received, therefore, by dividing
Analyse the signal, so that it may determine the spatial distribution characteristic of underground medium.With the development of science and technology, geologic radar detection technology also day
Becoming mature, investigation depth continues to increase, and application field also constantly expands, all in every field such as traffic, hydraulic engineering, municipal administrations
To extensive use.
Geologic radar detection technology is a kind of earth that the media interior substance regularity of distribution is determined with high frequency radio wave
Physical method, the basic principle is that theoretical based on frequency electromagnetic waves, geological radar utilizes frequency electromagnetic waves (1MHz-1GHz), with
Impulse form is directed by transmitting antenna is sent into underground, and reflection is generated when electromagnetic pulse encounters different electrical interfaces or is dissipated
It penetrates, reflection signal is received by receiving antenna, is analyzed and processed by waveform, the amplitude to the radar wave received, obtains ground
The feature of lower objective body.Radar Electromagnetic pulse propagation is mainly influenced by the electrical property difference of underground medium, the electrical property feature packet of medium
Include conductivity and dielectric constant, the former affects propagation depth, and the latter affects spread speed, the investigation depth of geological radar
It is only influenced by electromagnetic wave propagation time T and spread speed V in same medium, radar is propagated depth D and can be obtained by following formula:
In formula, C is the spread speed of electromagnetic wave in an atmosphere,It is relative dielectric constant, differing dielectric constantMedium pair
Radar wave propagation has differential responses, and when carrying out radar detection in same uniformly densely medium, radar image reflection is
The continuous back wave of axis in the same direction, and when the reflection of radar wave for encountering electric characteristic abnormality interface is abnormal, so that receiving antenna receives
To radar image show abnormality, axis bad break in the same direction, confusion, unintelligible etc. are shown as, so that it is determined that subsurface anomaly.Geology thunder
Profile method is used up to Detection Techniques, i.e. dual-mode antenna is detected with constant spacing along survey line synchronizing moving simultaneously, final to obtain
Record the radar image of time section.
As soon as high-density electric is the mutation of conventional resistive rate method, for principle, with the complete phase of conventional resistive rate method
Together, it still based on electrical property difference, is solved by observing and studying the regularity of distribution for the underground consistent electric field manually established
The hydrology, environment and engineering geological problems.High-density electric is actually a kind of array detection method, is the conventional electricity of various arrangement
Resistance rate method automatically processes a kind of integrated approach combined with data.
High-density electric is a kind of geophysical exploration based on the electrical property difference of Underground objective body and country rock
Method, specifically:, only need to be by pole layout on the measuring point of certain intervals when surveying at the scene, the conventional electricity of the density ratio of measuring point
Resistance rate is small, is then connected on program control type multi-electrode change-over switch with multicore cable, and measuring signal is converted by electrode
Switch is sent into microcomputer engineering electrical measuring instrument, and measurement result is sequentially stored into random access memory.Wherein: spaced design 1-10m, electricity
Pole change-over switch is a kind of by monolithic processor controlled electrode automatic transfer equipment, automatic as needed to carry out electrode automatic conversion dress
Set the conversion of form, electrode spacing and measuring point.As shown in Figure 1, being fed in measurement process by electrodes of A, current electrode B
Electric current I measures potential difference Δ U using measuring electrode M, measuring electrode N and calculates apparent resistivity, when measurement is uniformly electric greatly
When resistance rate, the current potential of any two measuring electrodes M of earth's surface, measuring electrode N are as follows:
Wherein,For uniform ground resistivity, AM, BM, AN, BN be respectively A, B between M, N at a distance from, above two formula is subtracted each other
The potential difference of M, N point-to-point transmission can be obtained are as follows:
Uniform ground resistivity expression formula is obtained by above formula are as follows:
K is electrode coefficient in formula,, unit is rice, it is determined by interelectrode relative position
Fixed, in actual operation, obtained resistivity is actually the comprehensive of landform and various geology body resistivities in electric field effective range
Influence value, i.e. apparent resistivity are closed, is passed throughApparent resistivity value being sought, when there is leakage in hilly pond dam body, being seeped
Drain region resistivity shows notable difference relative to surrounding, obtains leak location by resistivity contrasts.
The relatively conventional dc resistivity of high-density electric, main advantage are embodied in the following aspects:
(1) pole layout is disposably completed, and replacement electrode is not had in detection and avoids less with laying repeatedly and operates band repeatedly
The error and interference come, make that detection result is more accurate, detection process is more quick.
(2) it is freely combined between electrode, various arrangement mode measures, and detection information data volume is big, the geology of reflection
Abundant information.
(3) field data collection realizes automation or semi-automation.
(4) it can be pre-processed in the field that working site carries out data, export live section curve form, real work in real time
It is easy to operate and intelligent.
(5) compared with traditional electrical method, more economical efficient, easy to operate, data interpretation is conveniently.
Specific pilot is selected in a certain hilly pond, and the hilly pond leakage problems are serious, are suitble to carry out high-density electric and geological radar
Detection, specific hilly pond information are as follows: hilly pond is located at certain village, and the above collective area of dam site is 0.18km2, 1.00 ten thousand m of aggregate storage capacity3, it is
One to irrigate, supply water as the mountain type roof hilly pond of primary benefits.Hilly pond is built in the end of the eighties, and engineering hinge is by dam, excessive flood
The buildings such as road and discharge culvert composition.Dam is homogeneous earth dam, and 10.2 meters of maximum height of dam, 583.4 meters of crest elevation, dam crest is wide
1.6--2.5 meters, 35.2 meters of dam length of degree.Former discharge culvert is located on the left of dam, for dam inner concrete circle culvert pipe.Spillway is located at
The left side of dam is open type Proper channel spillway, elevation of weir crest 580.75m.Due to being limited by prevailing condition, design standard
Low, construction quality is poor, and after many years run, there are many security risks for hilly pond at present.The long-term leak of discharge culvert, dam under dam
Base infiltration is serious.In order to ensure downstream resident's security of the lives and property, it is ensured that hilly pond safe operation, therefore the hilly pond dam body is carried out and is seeped
Leak detection determines leak location, renovates leak repairing work for later period hilly pond and provides foundation.From geologic radar detection and high-density electric
It can be concluded that, resistivity is integrally in layered distribution, and overall resistivity value is higher during inverting achievement combines, and maximum reaches thousands of Ω
M, but within the scope of left dam abutment 13m, 3 ~ 6m of depth bounds, there are low resistance region, resistivity value, should most down to 100 Ω m
There are notable differences with entire dam body for zone resistance rate value, are inferred as the main breakthrough of dam.In conjunction with dam comprehensive improvement in 2012
Data it is found that there is an old culvert pipe in the position apart from left dam dam abutment 13m or so, in the work of comprehensive improvement in 2012 to its into
It has gone closure, has not been caused tightly it can therefore be concluded that leakage is probably derived from old culvert pipe closure.
Claims (7)
1. a kind of hilly pond embankment seepage detection method, characterized in that obtain hilly pond essential information by field research, select mountain
The pool is in high water level, the method combined using geologic radar detection technology with high-density electric, to there are the mountains of leakage problems
Dyke body is detected and is acquired data, obtains result map to data progress editing and processing, data analysis and the inverting of acquisition,
In conjunction with hilly pond geologic information, result map is explained, determines leak location.
2. a kind of hilly pond embankment seepage detection method according to claim 1, characterized in that the geologic radar detection
Technology be a kind of geophysical method of the media interior substance regularity of distribution is determined with high frequency radio wave, the basic principle is that
Based on frequency electromagnetic waves theory, geological radar utilizes frequency electromagnetic waves, is directed feeding ground by transmitting antenna with impulse form
Under, reflection or scattering are generated when electromagnetic pulse encounters different electrical interfaces, and reflection signal is received by receiving antenna, passes through docking
Waveform, the amplitude of the radar wave received are analyzed and processed, and obtain the feature of buried target body.
3. a kind of hilly pond embankment seepage detection method according to claim 2, characterized in that radar Electromagnetic pulse propagation master
It to be influenced by the electrical property difference of underground medium, the electrical property feature of medium includes conductivity and dielectric constant, the former affects biography
Seed level degree, the latter affect spread speed, the investigation depth of geological radar in same medium only by electromagnetic wave propagation time T and
The influence of spread speed V, radar are propagated depth D and can be obtained by following formula:
In formula, C is the spread speed of electromagnetic wave in an atmosphere,It is relative dielectric constant, differing dielectric constantMedium to thunder
There are differential responses up to wave propagation, when carrying out radar detection in same uniformly densely medium, radar image reflection is same
To the continuous back wave of axis, and when the reflection of radar wave for encountering electric characteristic abnormality interface is abnormal, so that receiving antenna receives
Radar image show abnormality, so that it is determined that subsurface anomaly.
4. a kind of hilly pond embankment seepage detection method according to claim 2 or 3, characterized in that geologic radar detection skill
Art uses profile method, i.e. dual-mode antenna is detected with constant spacing along survey line synchronizing moving simultaneously, final to obtain the record time
The radar image of section.
5. a kind of hilly pond embankment seepage detection method according to claim 1, characterized in that the high-density electric is
A kind of geophysical exploration method based on the electrical property difference of Underground objective body and country rock, specifically: it surveys at the scene
, only need to be by pole layout on the measuring point of certain intervals when survey, the density ratio conventional resistive rate of measuring point is small, then uses multicore cable
It is connected on program control type multi-electrode change-over switch, measuring signal is sent into the electrical measurement of microcomputer engineering by electrode change-over switch
Instrument, and measurement result is sequentially stored into random access memory.
6. a kind of hilly pond embankment seepage detection method according to claim 5, characterized in that the spaced design is 1-
10m, electrode change-over switch are a kind of by monolithic processor controlled electrode automatic transfer equipment, and automatic progress electrode is automatic as needed
The conversion of conversion equipment form, electrode spacing and measuring point.
7. a kind of hilly pond embankment seepage detection method according to claim 5 or 6, characterized in that in measurement process, lead to
Electrodes of A, current electrode B infeed electric current I are crossed, potential difference Δ U is measured using measuring electrode M, measuring electrode N and calculates
Apparent resistivity, when measuring uniform ground resistivity, the current potential of any two measuring electrodes M of earth's surface, measuring electrode N are as follows:
Wherein,For uniform ground resistivity, AM, BM, AN, BN be respectively A, B between M, N at a distance from, above two formula is subtracted each other
The potential difference of M, N point-to-point transmission can be obtained are as follows:
Uniform ground resistivity expression formula is obtained by above formula are as follows:
K is electrode coefficient in formula,, unit is rice, it is determined by interelectrode relative position
Fixed, in actual operation, obtained resistivity is actually the comprehensive of landform and various geology body resistivities in electric field effective range
Influence value, i.e. apparent resistivity are closed, is passed throughApparent resistivity value is sought, when there is leakage in hilly pond dam body, leakage
Area's resistivity shows notable difference relative to surrounding, obtains leak location by resistivity contrasts.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782357A (en) * | 2019-02-18 | 2019-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of method of ground Pumping Magnetic Resonance Method and high-density electric combined detection dam leakage |
| CN110263985A (en) * | 2019-06-04 | 2019-09-20 | 长江勘测规划设计研究有限责任公司 | The electrical method monitoring and warning system that water delivery is secretly contained, dyke and side slope water body permeate |
| CN110276484A (en) * | 2019-06-04 | 2019-09-24 | 长江勘测规划设计研究有限责任公司 | The electrical method monitoring and warning system that water delivery is secretly contained, dyke and side slope water body permeate |
| CN110632131A (en) * | 2019-10-16 | 2019-12-31 | 黄河勘测规划设计研究院有限公司 | Method for monitoring leakage of channel embankment project |
| CN111522066A (en) * | 2020-05-08 | 2020-08-11 | 上海应用技术大学 | Pile body quality electrical method detection method |
| CN112433252A (en) * | 2020-11-06 | 2021-03-02 | 浙江大学 | Electrode random distribution type three-dimensional high-density electrical method data acquisition method |
| CN112596054A (en) * | 2020-12-04 | 2021-04-02 | 牧原食品股份有限公司 | Dam body risk prevention and control device |
| CN113031078A (en) * | 2021-04-06 | 2021-06-25 | 中南大学 | Frequency division electrical method correction method for leakage detection |
| CN113050172A (en) * | 2021-03-12 | 2021-06-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Current field testing method for slag storage leakage channel |
| WO2022002071A1 (en) * | 2020-06-29 | 2022-01-06 | 山东大学 | Method and system for detecting hidden karst conduit |
| CN115096527A (en) * | 2022-07-28 | 2022-09-23 | 中国科学技术大学 | Electric method signal device for monitoring leakage of river levee |
| CN115435658A (en) * | 2022-11-10 | 2022-12-06 | 中交路桥建设有限公司 | Rubber dam bag height radian measuring device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782357A (en) * | 2019-02-18 | 2019-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of method of ground Pumping Magnetic Resonance Method and high-density electric combined detection dam leakage |
| CN110276484B (en) * | 2019-06-04 | 2021-05-04 | 长江勘测规划设计研究有限责任公司 | Electric method monitoring and early warning system for water permeation of water delivery culvert, dike and side slope water body |
| CN110263985A (en) * | 2019-06-04 | 2019-09-20 | 长江勘测规划设计研究有限责任公司 | The electrical method monitoring and warning system that water delivery is secretly contained, dyke and side slope water body permeate |
| CN110276484A (en) * | 2019-06-04 | 2019-09-24 | 长江勘测规划设计研究有限责任公司 | The electrical method monitoring and warning system that water delivery is secretly contained, dyke and side slope water body permeate |
| CN110263985B (en) * | 2019-06-04 | 2021-05-04 | 长江勘测规划设计研究有限责任公司 | Electric method monitoring and early warning system for water permeation of water delivery culvert, dike and side slope water body |
| CN110632131A (en) * | 2019-10-16 | 2019-12-31 | 黄河勘测规划设计研究院有限公司 | Method for monitoring leakage of channel embankment project |
| CN110632131B (en) * | 2019-10-16 | 2021-11-30 | 黄河勘测规划设计研究院有限公司 | Method for monitoring leakage of channel embankment project |
| CN111522066A (en) * | 2020-05-08 | 2020-08-11 | 上海应用技术大学 | Pile body quality electrical method detection method |
| WO2022002071A1 (en) * | 2020-06-29 | 2022-01-06 | 山东大学 | Method and system for detecting hidden karst conduit |
| CN112433252A (en) * | 2020-11-06 | 2021-03-02 | 浙江大学 | Electrode random distribution type three-dimensional high-density electrical method data acquisition method |
| CN112596054A (en) * | 2020-12-04 | 2021-04-02 | 牧原食品股份有限公司 | Dam body risk prevention and control device |
| CN113050172A (en) * | 2021-03-12 | 2021-06-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Current field testing method for slag storage leakage channel |
| CN113031078A (en) * | 2021-04-06 | 2021-06-25 | 中南大学 | Frequency division electrical method correction method for leakage detection |
| CN115096527A (en) * | 2022-07-28 | 2022-09-23 | 中国科学技术大学 | Electric method signal device for monitoring leakage of river levee |
| CN115096527B (en) * | 2022-07-28 | 2023-08-29 | 中国科学技术大学 | Electric signal device for monitoring river levee leakage |
| CN115435658A (en) * | 2022-11-10 | 2022-12-06 | 中交路桥建设有限公司 | Rubber dam bag height radian measuring device |
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Application publication date: 20181218 |