CN108709845A - Soil layer three-dimensional infiltration field detecting system based on acoustic-electric coupled resonance and detection method - Google Patents
Soil layer three-dimensional infiltration field detecting system based on acoustic-electric coupled resonance and detection method Download PDFInfo
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- CN108709845A CN108709845A CN201810778284.5A CN201810778284A CN108709845A CN 108709845 A CN108709845 A CN 108709845A CN 201810778284 A CN201810778284 A CN 201810778284A CN 108709845 A CN108709845 A CN 108709845A
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- monitoring holes
- acoustic
- acoustic wave
- soil layer
- sound wave
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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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 soil layer three-dimensional based on acoustic-electric coupled resonance that the invention discloses a kind of permeating field detecting system, including：First acoustic wave transducer and the second acoustic wave transducer, first acoustic wave transducer and the second acoustic wave transducer vertical characteristics at a certain distance in seepage field, vertical characteristics, the first acoustic wave transducer and the second acoustic wave transducer can emit and receive ultrasonic signal at a certain distance in seepage field for first acoustic wave transducer and the second acoustic wave transducer；Monitoring holes, the basis using the first monitoring holes, the second monitoring holes and third monitoring holes as combined detection are put into monitoring of the acoustic wave transducer into line-pulse signal in the combination of each two monitoring holes composition；Signal acquisition and controlling terminal, signal acquisition and controlling terminal carries out waveform and frequency comparison by collected acoustic signals, and then calculates permeability according to acoustic doppler effect frequency inversion；And program-controlled power amplifier, the adjustment of transmitting signal power is carried out according to the attenuation that sound wave is propagated in the medium.
Description
Technical field
The invention belongs to field of engineering building, more particularly to a kind of soil layer three-dimensional infiltration based on acoustic-electric coupled resonance
Field detecting system and detection method.
Background technology
In the work progress that foundation pit excavates, the geological conditions of place job location to construction quality, construction speed and
Job safety all plays the role of vital, the different geological conditions and excavation depth especially residing for grasp job location
The variation of the corresponding permeability of degree is extremely crucial to the smooth implementation of engineering process.With the quickening of infrastructure construction paces
And the intelligentized propulsion of work progress, more effective, more convenient, more inexpensive permeability is needed in construction process
Detection technique.
Being disclosed in the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or imply that the information is constituted in any form.
Invention content
The purpose of the present invention is to provide a kind of, and the soil layer three-dimensional based on acoustic-electric coupled resonance permeates field detecting system and inspection
Survey method can realize the quick detection of seepage field soil layer permeability, reduce testing cost and shorten detection duration, improve
The reliability of system.
The soil layer three-dimensional based on acoustic-electric coupled resonance that the present invention provides a kind of permeating field detecting system, including：First sound
Wave transducer and the second acoustic wave transducer, the first acoustic wave transducer and the second acoustic wave transducer hang down at a certain distance in seepage field
To distribution, vertical characteristics, the first sound wave change at a certain distance in seepage field for the first acoustic wave transducer and the second acoustic wave transducer
Energy device and the second acoustic wave transducer can emit and receive ultrasonic signal；Monitoring holes, using the first monitoring holes, the second monitoring holes
And basis of the third monitoring holes as combined detection, it is put into acoustic wave transducer in the combination of each two monitoring holes composition and carries out
The monitoring of pulse signal；Signal acquisition and controlling terminal, signal acquisition and controlling terminal are carried out by collected acoustic signals
Waveform and frequency comparison, and then permeability is calculated according to acoustic doppler effect frequency inversion；And program-controlled power amplifier, journey
Control power amplifier carries out the adjustment of transmitting signal power according to the attenuation that sound wave is propagated in the medium.
In a preferred embodiment, soil layer three-dimensional infiltration field detecting system further includes：Sonic generator, sound wave occur
The setpoint frequency of device is controllable, the diffraction that the sound wave to adjust different frequency may occur when being propagated in seepage flow layer labyrinth
With decaying.
In a preferred embodiment, one is constituted directly by the first monitoring holes, the second monitoring holes and third monitoring holes
Angular coordinate system formation group hole obtains the percolation flow velocity of seepage field in different directions by the way of group hole detection.
In a preferred embodiment, program-controlled power amplifier is by controlling according to the feedback signal that system is collected into
System carries out the adjustment of transmission power.
In a preferred embodiment, signal acquisition and controlling terminal has direct information processing and Inversion Calculation
Function can directly give permeability data.
In a preferred embodiment, soil layer three-dimensional infiltration field detecting system further includes：Data storage, data storage
The record of device is corresponding with test point position, penetration value.
The present invention also provides a kind of, and the soil layer three-dimensional based on acoustic-electric coupled resonance permeates field detecting method, the detection method
Using infiltration field detecting system above-mentioned, detection method includes the following steps：First monitoring holes, the second monitoring holes and are provided
Three monitoring holes, wherein the first monitoring holes, the second monitoring holes and third monitoring holes group hole in groups；It is supervised in the first monitoring holes and second
It is put into two acoustic wave transducers in gaging hole, and sets the first sound wave angle α1；It is put into two in the second monitoring holes and third monitoring holes
A acoustic wave transducer, and set rising tone wave angle α2；Two acoustic wave transducers are put into the first monitoring holes and third monitoring holes,
And set third sound wave angle α3；And it is calculated based on group hole angle α, the first sound wave angle, rising tone wave angle and third sound wave angle
Percolation flow velocity of the seepage field on three directions of coordinate system.
In a preferred embodiment, group hole angle α, the first sound wave angle, rising tone wave angle and third sound wave are based on
Angle calculates percolation flow velocity of the seepage field on three directions of coordinate system：Seepage field is calculated in coordinate system three with following formula
Percolation flow velocity v on a directionx、vy、vz：
Wherein, when being put into two acoustic wave transducers in the first monitoring holes and the second monitoring holes, transmitting transducer is sent out
The frequency of sound wave penetrated is f01, it is f to receive the frequency of sound wave received by energy converter1, when in the second monitoring holes and third monitoring holes
In when being put into two acoustic wave transducers, the frequency of sound wave that transmitting transducer is emitted is f02, receive the sound received by energy converter
Wave frequency rate is f2, when being put into two acoustic wave transducers in the first monitoring holes and third monitoring holes, transmitting transducer is emitted
Frequency of sound wave be f03, it is f to receive the frequency of sound wave received by energy converter3。
Compared with prior art, the invention has the advantages that：The present invention proposes a kind of based on acoustic-electric coupled resonance
Soil layer three-dimensional permeates field detecting method, and the medium propagation characteristic based on ultrasound is come the variation of inverting soil layer permeability, according to signal
Attenuation in medium propagation carries out the power adjustment of signal transmitting, while adjustable acoustic signals frequency is to adapt to difference
Geological conditions, a three-dimensional seepage field information is obtained using a group hole detection mode, to realize the quick of seepage field soil layer permeability
Detection reduces testing cost and shortens detection duration, improves the reliability of system.
Description of the drawings
Fig. 1 is the soil layer three-dimensional infiltration field detecting system based on acoustic-electric coupled resonance according to an embodiment of the present invention
Schematic diagram.
Fig. 2 is the schematic diagram for the geometrical relationship that displaying monitoring holes according to an embodiment of the present invention are related to.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific implementation mode of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield range is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
Fig. 1 is the soil layer three-dimensional infiltration field detecting system based on acoustic-electric coupled resonance according to an embodiment of the present invention
Schematic diagram.Fig. 2 is the schematic diagram for the geometrical relationship that displaying monitoring holes according to an embodiment of the present invention are related to.Fig. 2 is Fig. 1
Vertical view.
As shown, soil layer three-dimensional infiltration field detecting system includes：First acoustic wave transducer 4 and the second acoustic wave transducer 8,
First acoustic wave transducer and the second acoustic wave transducer vertical characteristics at a certain distance in seepage field, the first acoustic wave transducer and
Two acoustic wave transducers vertical characteristics at a certain distance in seepage field, the first acoustic wave transducer and the second acoustic wave transducer can
Transmitting and reception ultrasonic signal；Monitoring holes are used as group using the first monitoring holes 11, the second monitoring holes 12 and third monitoring holes 13
The basis for closing detection is put into monitoring of the acoustic wave transducer into line-pulse signal in the combination of each two monitoring holes composition；Signal
Acquisition and control terminal 10, signal acquisition and controlling terminal carry out waveform and frequency comparison by collected acoustic signals, into
And permeability is calculated according to acoustic doppler effect frequency inversion；And program-controlled power amplifier 2, program-controlled power amplifier according to
The attenuation that sound wave is propagated in the medium carries out the adjustment of transmitting signal power.
In said program, soil layer three-dimensional infiltration field detecting system further includes：Sonic generator 1, the setting of sonic generator 1
Frequency is controllable, the diffraction and decaying that the sound wave to adjust different frequency may occur when being propagated in seepage flow layer labyrinth.
A rectangular coordinate system formation group hole is constituted by the first monitoring holes, the second monitoring holes and third monitoring holes, is detected using group hole
Mode obtain the percolation flow velocity of seepage field in different directions.The feedback signal that program-controlled power amplifier is collected into according to system
The adjustment of transmission power is carried out by control system.Signal acquisition and controlling terminal has direct information processing and Inversion Calculation
Function, permeability data can be directly given.Permeating field detecting system further includes：Data storage, the note of data storage
Record is corresponding with test point position, penetration value.Permeating field detecting system further includes：Sound detecting pipe 3, wherein monitoring result with
Seepage field 5, sound wave direction 6, horizontal permeation direction 7 and sound wave angle 9 are closely related.
Assuming that in the first monitoring holes 11, the second monitoring holes 12 and third monitoring holes 13 optional two be put into two sound waves and change
Energy device is monitored, then completes the parameter information of one group of three-dimensional infiltration field and need to be monitored three times altogether, i.e., select monitoring holes respectively
It combines (11-12), (11-13) and (12-13) three kinds of combinations and obtains the percolation flow velocity of seepage field in different directions, setting
Sound wave angle 9 is respectively α in above-mentioned three kinds of combinations1、α2And α3, group hole angle 14 is α, if sound wave is in soil layer seepage field
Spread speed is v, and percolation flow velocity of the seepage field on three directions of coordinate system is respectively vx、vy、vz, the first monitoring holes 11, second
The level interval of monitoring holes 12 and third monitoring holes 13 is l.
When group hole angle α is equal to 90 °, by taking the combination of (11-12) monitoring holes as an example, the sound wave that transmitting transducer is emitted is frequently
Rate is f01, it is f to receive the frequency of sound wave received by energy converter1, then derive frequency of sound wave according to Doppler effect formulas and ooze
Relationship between flow velocity degree is
Similarly, it is transmitting transducer when combining to be monitored with (11-13) monitoring holes when group hole angle α is equal to 90 °
The frequency of sound wave emitted is f02, it is f to receive the frequency of sound wave received by energy converter2, then pushed away according to Doppler effect formulas
The relationship led between frequency of sound wave and percolation flow velocity is
Similarly, it is transmitting transducer when combining to be monitored with (12-13) monitoring holes when group hole angle α is equal to 90 °
The frequency of sound wave emitted is f03, it is f to receive the frequency of sound wave received by energy converter3, then pushed away according to Doppler effect formulas
The relationship led between frequency of sound wave and percolation flow velocity is
When group hole forms acute triangle, the frequency of sound wave and percolation flow velocity that mode derives are resolved according to same geometry
Between relationship.
It is with the relationship between the frequency of sound wave and percolation flow velocity of (11-12) combination bore monitoring gained
It is with the relationship between the frequency of sound wave and percolation flow velocity of (11-13) combination bore monitoring gained
It is with the relationship between the frequency of sound wave and percolation flow velocity of (11-13) combination bore monitoring gained
Then derive that percolation flow velocity of the seepage field on three directions of coordinate system is distinguished according to the concrete numerical value of monitoring gained
For vx, vy, vz.
First acoustic wave transducer 4 and the second acoustic wave transducer 8 can also be adjusted alternately as sound wave transmitting terminal and receiving terminal
Whole acoustic signals frequency combines sound wave angle 9 and monitoring result is counter pushes away permeability to adapt to different geological conditions；
Program-controlled power amplifier 2 carries out the power adjustment of signal transmitting according to attenuation of the signal in medium propagation,
To make up the energy dissipation of sound wave in the medium.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the present invention and its actually answering
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (8)
1. the soil layer three-dimensional based on acoustic-electric coupled resonance permeates field detecting system, which is characterized in that the soil layer three-dimensional permeates field
Detecting system includes：
First acoustic wave transducer and the second acoustic wave transducer, first acoustic wave transducer and the second acoustic wave transducer are in seepage field
In vertical characteristics, first acoustic wave transducer and the second acoustic wave transducer hang down at a certain distance in seepage field at a certain distance
To distribution, first acoustic wave transducer and the second acoustic wave transducer can emit and receive ultrasonic signal；
Monitoring holes, the basis using the first monitoring holes, the second monitoring holes and third monitoring holes as combined detection, in each two
It is put into monitoring of the acoustic wave transducer into line-pulse signal in the combination of monitoring holes composition；
Signal acquisition and controlling terminal, the signal acquisition and controlling terminal carry out waveform and frequency by collected acoustic signals
Rate compares, and then calculates permeability according to acoustic doppler effect frequency inversion；And
Program-controlled power amplifier, the program-controlled power amplifier carry out transmitting letter according to the attenuation that sound wave is propagated in the medium
The adjustment of number power.
2. the soil layer three-dimensional according to claim 1 based on acoustic-electric coupled resonance permeates field detecting system, which is characterized in that
The soil layer three-dimensional permeates field detecting system：The setpoint frequency of sonic generator, the sonic generator is controllable, to adjust
The diffraction and decaying that the sound wave of whole different frequency may occur when being propagated in seepage flow layer labyrinth.
3. the soil layer three-dimensional according to claim 1 based on acoustic-electric coupled resonance permeates field detecting system, which is characterized in that
A rectangular coordinate system formation group hole is constituted by first monitoring holes, the second monitoring holes and third monitoring holes, using a group hole
The mode of detection obtains the percolation flow velocity of seepage field in different directions.
4. the soil layer three-dimensional according to claim 1 based on acoustic-electric coupled resonance permeates field detecting system, which is characterized in that
The feedback signal that the program-controlled power amplifier is collected into according to system carries out the adjustment of transmission power by control system.
5. the soil layer three-dimensional according to claim 1 based on acoustic-electric coupled resonance permeates field detecting system, which is characterized in that
The signal acquisition and controlling terminal has the function of direct information processing and Inversion Calculation, can directly give permeability
According to.
6. the soil layer three-dimensional according to claim 1 based on acoustic-electric coupled resonance permeates field detecting system, which is characterized in that
The soil layer three-dimensional permeates field detecting system：Data storage, the record of the data storage and test point position,
Penetration value is corresponding.
7. the soil layer three-dimensional based on acoustic-electric coupled resonance permeates field detecting method, which is characterized in that the method applies such as right
It is required that the infiltration field detecting system described in one of 1-6, the soil layer three-dimensional infiltration field detecting method includes the following steps：
First monitoring holes, the second monitoring holes and third monitoring holes are provided, wherein first monitoring holes, the second monitoring holes and
Third monitoring holes group hole in groups；
It is put into two acoustic wave transducers in first monitoring holes and the second monitoring holes, and sets the first sound wave angle α1；
It is put into two acoustic wave transducers in second monitoring holes and third monitoring holes, and sets rising tone wave angle α2；
It is put into two acoustic wave transducers in first monitoring holes and third monitoring holes, and sets third sound wave angle α3；And
Seepage field is calculated in three sides of coordinate system based on a group hole angle α, the first sound wave angle, rising tone wave angle and third sound wave angle
Upward percolation flow velocity.
8. the soil layer three-dimensional according to claim 7 based on acoustic-electric coupled resonance permeates field detecting method, which is characterized in that
Seepage field is calculated on three directions of coordinate system based on a group hole angle α, the first sound wave angle, rising tone wave angle and third sound wave angle
Percolation flow velocity be specially：
Percolation flow velocity v of the seepage field on three directions of coordinate system is calculated with following formulax、vy、vz：
Wherein, when being put into two acoustic wave transducers in first monitoring holes and the second monitoring holes, transmitting transducer is sent out
The frequency of sound wave penetrated is f01, it is f to receive the frequency of sound wave received by energy converter1, when in second monitoring holes and third prison
When being put into two acoustic wave transducers in gaging hole, the frequency of sound wave that transmitting transducer is emitted is f02, receive received by energy converter
Frequency of sound wave be f2, when being put into two acoustic wave transducers in first monitoring holes and third monitoring holes, emit transducing
The frequency of sound wave that device is emitted is f03, it is f to receive the frequency of sound wave received by energy converter3。
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