CN115574702B - Slope slip monitoring method based on piezoelectric diaphragm and electromechanical impedance method - Google Patents
Slope slip monitoring method based on piezoelectric diaphragm and electromechanical impedance method Download PDFInfo
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- CN115574702B CN115574702B CN202211182049.4A CN202211182049A CN115574702B CN 115574702 B CN115574702 B CN 115574702B CN 202211182049 A CN202211182049 A CN 202211182049A CN 115574702 B CN115574702 B CN 115574702B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention discloses a slope slip monitoring method based on a piezoelectric diaphragm and an electromechanical impedance method, which comprises a distributed piezoelectric ceramic sensor array, a rock matrix, a soil-rock interface and a landslide body, wherein the distributed piezoelectric ceramic sensor array comprises a strip-shaped aluminum sheet, a group of piezoelectric ceramic sheets and a group of piezoelectric diaphragms, and the piezoelectric ceramic sheets and the piezoelectric diaphragms are fixed on the upper surface and the lower surface of the strip-shaped aluminum sheet in a pasting mode to form a slope slip intelligent probe. The invention relates to the technical field of slope monitoring, and can realize rapid monitoring and accurate determination of water loss conditions at different depths, and has the advantages of high sensitivity, quick response, good long-term stability, simple and convenient operation, dexterity, no heaviness and low price.
Description
Technical Field
The invention relates to the technical field of slope monitoring, in particular to a slope slip monitoring method based on a piezoelectric membrane and an electromechanical impedance method.
Background
Aiming at the problems of low measurement precision, time and labor waste, heavy instruments and equipment and the like in the existing slope deep soil-rock interface sliding monitoring method, the invention provides a novel slope deep soil-rock interface sliding monitoring device utilizing a piezoelectric ceramic intelligent sensor (a piezoelectric ceramic sheet and a piezoelectric membrane) and an electromechanical impedance method, and the slope deep soil-rock interface sliding monitoring device can realize real-time online monitoring of the slope deep soil-rock interface sliding condition.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a slope slip monitoring method based on a piezoelectric membrane and an electromechanical impedance method, which solves the problems of low measurement precision, time and labor waste and heavy instrument of the existing slope slip monitoring equipment.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a slope monitoring method that slides based on piezoceramics piece and electromechanical impedance method, includes distributed piezoceramics sensor array, rock base, soil rock interface, landslide body, and this distributed piezoceramics sensor array includes rectangular shape aluminum sheet, a set of piezoceramics piece and a set of piezoceramics piece, piezoceramics piece and piezoceramics piece are fixed with the mode of pasting rectangular shape is gone the upper and lower surface of aluminum sheet, forms the intelligent probe that slides of side slope.
The distributed piezoceramic sensor array further comprises an electrical conductor for electrical connection.
The intelligent slope sliding probe is inserted into the landslide body in a vertical posture and extends into a rock matrix.
The electric lead is electrically connected with an impedance analyzer arranged outside, and the output end of the impedance analyzer is electrically connected with a computer.
Preferably, the number of the piezoelectric ceramic plates is two, the number of the piezoelectric diaphragms is two, and the piezoelectric ceramic plates and the piezoelectric diaphragms are distributed on the strip-shaped aluminum sheet in bilateral symmetry.
A monitoring method of a slope slip monitoring method based on a piezoelectric diaphragm and an electromechanical impedance method comprises the following steps:
s1, calibrating a monitoring system before use according to different excitation frequencies, sensor types and soil samples of different soil types; after the calibration is finished, the corresponding relation between the soil property of the type, the slip index of the soil-rock interface at the deep part of the slope under the excitation frequency and the sensor type and the water content at different depths in the soil can be obtained;
s2, embedding the intelligent slope sliding probe based on the piezoelectric ceramic sensor into an area needing to monitor the moisture in soil, wherein the directionality and the position accuracy of the intelligent slope sliding probe need to be maintained during embedding;
s3, connecting relevant equipment in the monitoring system, switching on a power supply, switching on an instrument switch, and sending out a high-frequency excitation signal to the distributed piezoelectric ceramic sensor array through an impedance analyzer, wherein the frequency of a sweep frequency signal is 170-270 KHz, and the amplitude is 1V;
the whole electrical impedance data acquisition process is short in time, and soil is naturally air-dried, so that volatilization of moisture in the soil is completely negligible in the process, and the moisture in the soil is considered to be unchanged in each data acquisition process;
s4, converting the electric signals into vibration signals according to the inverse piezoelectric effect of the piezoelectric materials by the distributed piezoelectric ceramic sensor array, converting the signals into electric signals again according to the positive piezoelectric effect of the piezoelectric materials by the piezoelectric ceramic sensors arranged at different positions in the soil body, and acquiring and storing the electric signals by the impedance analyzer;
s5, determining the water loss conditions of the side soil at different depths according to the electrical impedance signals (electrical conductivity and frequency relation curve) and the like acquired by the impedance analyzer in the natural air drying process of the soil. And respectively calculating the sliding indexes of the soil and rock interfaces at the deep part of the side slope corresponding to different sensors through formulas.
S6, according to a system calibration result, the water loss information of the monitored soil body is determined by obtaining a slope deep soil-rock interface slip index through a conductivity and frequency relation curve of a distributed piezoelectric ceramic sensor array on a slope slip intelligent probe.
(III) beneficial effects
The invention provides a slope slip monitoring method based on a piezoelectric membrane and an electromechanical impedance method. The beneficial effects are as follows:
according to the slope sliding monitoring method based on the piezoelectric diaphragm and the electromechanical impedance method, a distributed piezoelectric ceramic sensor array (piezoelectric ceramic plates and piezoelectric diaphragms) is buried in the slope, a plurality of sensors are adhered to the surface of a strip-shaped aluminum sheet by using epoxy resin glue, and in addition, related functional devices are integrated together to form a slope deep soil-rock interface sliding monitoring and collecting and processing system which is simple and convenient to use, economical and efficient, and related data processing software such as Matlab, labview is combined to monitor the slope deep soil-rock interface sliding condition for a long time.
Drawings
FIG. 1 is a schematic diagram of a device for monitoring the sliding of a soil-rock interface at the deep part of a side slope according to the embodiment of the invention;
FIG. 2 is a schematic diagram of a monitoring system according to the present invention;
FIG. 3 is a flow chart of the monitoring system of the present invention;
FIG. 4 is a graph of electrical impedance monitoring signal change (piezoelectric ceramic plate) performed during sliding of a slope deep soil-rock interface in an embodiment of the invention;
FIG. 5 is a graph of electrical impedance monitoring signal change (piezoelectric membrane) performed during sliding of a slope deep soil-rock interface in an embodiment of the invention;
FIG. 6 is a graph showing the relationship between the electrical impedance signal (amplitude and peak frequency) of a piezoelectric ceramic plate and the sliding distance of a side slope in the sliding process of a soil-rock interface at the deep part of the side slope;
FIG. 7 is a graph showing the relationship between the electrical impedance signal (amplitude and peak frequency) of the piezoelectric diaphragm and the sliding distance of the side slope in the sliding process of the soil-rock interface at the deep part of the side slope;
FIG. 8 is a graph (piezoelectric ceramic plate) showing the relationship between two kinds of soil-rock interface sliding indexes along with the sliding distance of a side slope in the sliding process of the soil-rock interface at the deep part of the side slope;
fig. 9 is a graph (piezoelectric film) showing the relationship between two kinds of soil-rock interface sliding indexes along with the sliding distance of a side slope in the sliding process of the soil-rock interface at the deep part of the side slope.
In the figure: 1-an elongated aluminum sheet; 2-piezoelectric ceramic plate; 3-piezoelectric membrane; 4-an electrical lead; 5-landslide mass; 6-soil-rock interface; 7-bedrock; 8-signal transmission wire; 9—a precision impedance analyzer; 10-computer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-9, the present invention provides a technical solution: the utility model provides a slope monitoring method that slides based on piezoceramics membrane and electromechanical impedance method, includes distributed piezoceramics sensor array, rock base 7, soil rock interface 6, landslide body 5, and this distributed piezoceramics sensor array includes rectangular shape aluminum sheet 1, a set of piezoceramics piece 2 and a set of piezoceramics membrane 3, and piezoceramics piece 2 and piezoceramics membrane 3 are fixed on rectangular shape and are gone the upper and lower surface of aluminum sheet 1 with the mode of pasting, form the intelligent probe that slides of side slope.
The distributed piezoceramic sensor array further comprises an electrical conductor 4 for electrical connection.
The intelligent slope sliding probe is inserted into the slope body 5 in a vertical posture and extends into the rock base 7.
The electric wire 4 is electrically connected with an impedance analyzer 9 arranged outside, and the output end of the impedance analyzer 9 is electrically connected with a computer 10.
The number of the piezoelectric ceramic plates 2 is two, the number of the piezoelectric diaphragms 3 is two, and the piezoelectric ceramic plates 2 and the piezoelectric diaphragms 3 are distributed on the strip-shaped aluminum sheet 1 in bilateral symmetry.
A monitoring method of a slope slip monitoring method based on a piezoelectric diaphragm and an electromechanical impedance method comprises the following steps:
s1, calibrating a monitoring system before use according to different excitation frequencies, sensor types and soil samples of different soil types; after the calibration is finished, the corresponding relation between the soil property of the type, the slip index of the soil-rock interface at the deep part of the slope under the excitation frequency and the sensor type and the water content at different depths in the soil can be obtained;
s2, embedding the intelligent slope sliding probe based on the piezoelectric ceramic sensor into an area needing to monitor the moisture in soil, wherein the directionality and the position accuracy of the intelligent slope sliding probe need to be maintained during embedding;
s3, connecting relevant equipment in the monitoring system, switching on a power supply, switching on an instrument switch, and sending out a high-frequency excitation signal to the distributed piezoelectric ceramic sensor array through an impedance analyzer (9), wherein the frequency of a sweep frequency signal is 170-270 KHz, and the amplitude is 1V;
the whole electrical impedance data acquisition process is short in time, and soil is naturally air-dried, so that volatilization of moisture in the soil is completely negligible in the process, and the moisture in the soil is considered to be unchanged in each data acquisition process;
s4, converting the electric signals into vibration signals according to the inverse piezoelectric effect of the piezoelectric materials by the distributed piezoelectric ceramic sensor array, converting the signals into electric signals again according to the positive piezoelectric effect of the piezoelectric materials by the piezoelectric ceramic sensors arranged at different positions in the soil body, and acquiring and storing the electric signals by the impedance analyzer 9;
s5, determining the water loss conditions of the side soil at different depths according to the electrical impedance signals (electrical conductivity and frequency relation curve) and the like acquired by the impedance analyzer 9 in the natural air drying process of the soil; respectively calculating the sliding indexes of the soil and rock interfaces at the deep part of the side slope corresponding to different sensors through formulas;
s6, according to a system calibration result, the water loss information of the monitored soil body is determined by obtaining a slope deep soil-rock interface slip index through a conductivity and frequency relation curve of a distributed piezoelectric ceramic sensor array on a slope slip intelligent probe.
The device is based on the principle of electromechanical impedance in the piezoelectric active sensing method. First, 4 piezoelectric ceramic sensors (2 piezoelectric ceramic plates and 2 piezoelectric diaphragms) were attached to the upper and lower surfaces of an elongated aluminum sheet, two sensors for each surface. And forming the intelligent sliding probe at the deep part of the side slope. Then the intelligent probe is buried in the slope body, the accuracy of the direction and the position of the intelligent probe is maintained in the burying process, the aluminum sheet is ensured to be in an extrusion stress state in the slope sliding process, the other surface is in a tension stress state, relevant components in the monitoring system are well connected, a power supply of a precise impedance analysis instrument is turned on, a sine sweep frequency signal is excited to the distributed sensor array through an NI data acquisition analysis system, the frequency of the excitation signal is 200-300 KHz, and the amplitude is 1V.
The building steps of the monitoring system based on piezoelectric ceramic monitoring are as follows:
two piezoelectric ceramic plates 2 and two piezoelectric diaphragms 3 are stuck on the upper and lower surfaces of a strip-shaped aluminum sheet 1 at certain intervals to serve as distributed piezoelectric ceramic sensors, and each piezoelectric sensor is connected with an impedance analyzer 9 through an insulated electric lead 4. Then the monitoring device is inserted into the side slope body, so that the two sensors at the lowest part of the monitoring device are located below the sliding surface (inside the bedrock 7), and the two sensors at the uppermost part of the monitoring device are located above the sliding surface (inside the sliding body 5). Further, the piezoelectric ceramic plates at different depths are excited by the high-frequency excitation signal generated by the impedance analyzer 9. And due to the electromechanical impedance coupling relation between the piezoelectric ceramic plate and the intelligent slope sliding probe, the impedance analyzer 9 signal acquisition system acquires and transmits the electrical impedance data of the piezoelectric ceramic sensor to the computer analysis system.
The monitoring method for the sliding of the deep soil-rock interface in the sliding process of the side slope comprises the following steps:
firstly, frequency domain analysis is carried out on the electrical impedance signals of all piezoelectric ceramic sensors respectively and independently to obtain a signal change characteristic curve of the sliding change of the soil-rock interface at the deep part of the side slope caused by the sliding of the side slope relative to the non-sliding state of the side slope, so that the development process of the soil-rock interface displacement in the sliding process of the deep part of the side slope is known qualitatively. Then, based on the acquired electrical impedance signals of each sensor, the following two slope deep soil-rock interface slip indexes are established, and are respectively: root Mean Square Deviation (RMSD) and Correlation Coefficient Deviation (CCD), the course of change of slope deep soil-rock interface slip is monitored from the perspective of quantitative analysis.
Wherein R is e (Y) is the real part of the electrical conductivity signal of the piezoelectric ceramic sensor, N is the number of sampling points of the electrical impedance spectrum of the piezoelectric ceramic, subscripts 0 and 1 represent the electrical impedance measurement results of the piezoelectric ceramic sensor under the conditions of no water diversion and water loss,sum sigma Y The mean and standard deviation of the electrical admittance signal are shown, respectively.
In the sliding process of the soil-rock interface at the deep part of the side slope caused by natural air drying, the water loss index of each piezoelectric ceramic piece (corresponding to different depths in the soil) can be obtained based on the comparison analysis of the impedance signal energy index measured by the piezoelectric ceramic sensor and the impedance signal energy index measured by the piezoelectric ceramic sensor in the initial state, and then the water loss state of all the piezoelectric ceramic sensors at the positions (at different depths in the soil) can be obtained. For the two soil deep water loss indexes set forth above, the greater the calculated value, the greater the degree of soil water loss.
The soil is subjected to water loss under the action of natural air drying, so that the volume of the soil body is contracted and deformed, the physical and mechanical characteristics in the soil body are greatly changed, and the mechanical boundary conditions in the soil body are correspondingly changed in the process. The technical principle of the monitoring method of the invention is as follows: the electromechanical impedance method based on the piezoelectric ceramic sensor is a real-time monitoring method which mainly utilizes the good electromechanical coupling characteristic of the piezoelectric ceramic material and comprehensively examines the dynamic characteristic of the piezoelectric material and the mechanical impedance information of the intelligent probe for sliding of the detected side slope.
Firstly, inputting high-frequency alternating voltage to perform high-frequency excitation on the piezoelectric ceramic plate, so as to drive the intelligent slope sliding probe to perform high-frequency mechanical vibration. At the moment, the intelligent slope sliding probe and the piezoelectric ceramic plate are mutually coupled, and vibration information around the coupling structure is mutually coupled with mechanical impedance of the intelligent slope sliding probe and electrical impedance of the piezoelectric ceramic plate. Therefore, the vibration characteristic of the intelligent slope sliding probe, namely the sliding condition of the soil-rock interface at the deep part of the slope, can be indirectly reflected by monitoring the change of the electrical impedance signal of the piezoelectric ceramic plate. Because the wavelength of stress wave generated by the piezoelectric ceramic plate is shorter under high-frequency vibration, the change of the bonding condition and the boundary condition around the intelligent slope sliding probe caused by the sliding of the soil-rock interface at the deep part of the slope can be identified. The loss of soil moisture directly influences the coupling relation between the intelligent slope sliding probe embedded in the soil body and the soil body, and further influences the structural parameters and boundary conditions of the intelligent slope sliding probe. The water loss index (root mean square deviation and average absolute percentage deviation) of the electrical impedance signals of the piezoelectric ceramic sensors at different positions of the intelligent slope sliding probe and the signals in the initial state are compared and analyzed, so that the water loss condition at different depths of the soil profile is accurately determined.
The monitoring method based on the piezoelectric ceramic sensor and the impedance method provides a new thought and method for real-time monitoring of the internal water loss condition of the soil in the air drying process. A plurality of piezoelectric ceramic plates are adhered to the surface of a strip-shaped aluminum sheet to form a water intelligent detection device, the water intelligent detection device is embedded into soil to be detected, high-frequency alternating-current voltage excitation is applied to the piezoelectric ceramic sensor, an impedance analysis method is adopted to obtain an impedance function of the coupling structure, and water loss conditions at different depths inside the soil body are indirectly judged according to impedance spectrum changes of the coupling structure. The piezoelectric ceramic plate is manufactured into a self-driven sensor by utilizing the positive and negative piezoelectric effects of the piezoelectric ceramic plate, so that the real-time monitoring of the water loss condition in the soil body is realized.
And all that is not described in detail in this specification is well known to those skilled in the art.
In summary, the slope slip monitoring method based on the piezoelectric membrane and the electromechanical impedance method adopts the distributed piezoelectric ceramic sensor array (the piezoelectric ceramic sheet and the piezoelectric membrane) embedded in the slope, and a plurality of sensors are stuck on the surface of a strip-shaped aluminum sheet by using epoxy resin glue, and in addition, related functional devices are integrated together to form a slope deep soil-rock interface slip monitoring and collecting and processing system which is simple and convenient to use, economical and efficient, and is combined with Matlab, labview and related data processing software to monitor the slope deep soil-rock interface slip condition for a long time.
It should be noted that, the electrical components appearing in this document are all connected to the external main controller and 220V mains supply, and the main controller may be a conventional known device for controlling a computer, etc., and the control principle, the internal structure, the control switching manner, etc. of the main controller are all conventional means in the prior art, and are directly cited herein, which are not repeated herein, and relational terms such as first and second, etc. are used solely to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (1)
1. A monitoring method of a slope slip monitoring method based on a piezoelectric diaphragm and an electromechanical impedance method is characterized by comprising the following steps: the method comprises the following steps:
s1, pasting two piezoelectric ceramic plates (2) and two piezoelectric diaphragms (3) on the upper surface and the lower surface of a strip-shaped aluminum sheet (1) at intervals according to a certain distance to serve as distributed piezoelectric ceramic sensors, connecting each piezoelectric sensor with an impedance analyzer (9) through an insulated electric lead (4), inserting the monitoring device into a side slope body, ensuring that the two sensors at the lowest part of the monitoring device are positioned below a sliding surface, and the two sensors at the uppermost part of the monitoring device are positioned above the sliding surface, and further, generating high-frequency excitation signals by the impedance analyzer (9) to excite the piezoelectric ceramic plates at different depths, wherein due to the electromechanical impedance coupling relation between the piezoelectric ceramic plates and the side slope sliding intelligent probes, acquiring electrical impedance data of the piezoelectric ceramic sensors by a signal acquisition system of the impedance analyzer (9) and transmitting the electrical impedance data of the piezoelectric ceramic sensors to a computer analysis system;
calibrating a monitoring system before use according to different excitation frequencies, sensor types and soil samples of different soil types; after the calibration is finished, the corresponding relation between the soil property of the type, the slip index of the soil-rock interface at the deep part of the slope under the excitation frequency and the sensor type and the water content at different depths in the soil can be obtained;
s2, embedding the intelligent slope sliding probe based on the piezoelectric ceramic sensor into an area needing to monitor the moisture in soil, wherein the directionality and the position accuracy of the intelligent slope sliding probe need to be maintained during embedding;
s3, connecting relevant equipment in the monitoring system, switching on a power supply, switching on an instrument switch, and sending out a high-frequency excitation signal to the distributed piezoelectric ceramic sensor array through an impedance analyzer (9), wherein the frequency of a sweep frequency signal is 170-270 KHz, and the amplitude is 1V;
the whole electrical impedance data acquisition process is short in time, and soil is naturally air-dried, so that volatilization of moisture in the soil is completely negligible in the process, and the moisture in the soil is considered to be unchanged in each data acquisition process;
s4, converting the electric signals into vibration signals according to the inverse piezoelectric effect of the piezoelectric materials by the distributed piezoelectric ceramic sensor array, converting the signals into electric signals again according to the positive piezoelectric effect of the piezoelectric materials by the piezoelectric ceramic sensors arranged at different positions in the soil body, and acquiring and storing the electric signals by the impedance analyzer (9);
s5, determining the water loss conditions of the side soil at different depths according to the electrical impedance signals acquired by the impedance analyzer (9) in the natural air drying process of the soil; respectively calculating the sliding indexes of the soil and rock interfaces at the deep part of the side slope corresponding to different sensors through formulas;
the electrical impedance signals of all piezoelectric ceramic sensors are respectively and independently subjected to frequency domain analysis to obtain a signal change characteristic curve of the sliding change of the soil-rock interface of the deep part of the side slope caused by the sliding of the side slope relative to the non-sliding state of the side slope, so that the development process of the displacement of the soil-rock interface of the deep part of the side slope is qualitatively known; then, based on the acquired electrical impedance signals of each sensor, the following two slope deep soil-rock interface slip indexes are established, and are respectively: root Mean Square Deviation (RMSD) and related coefficient deviation (CCD), and monitoring the change process of the slope deep soil-rock interface slip from the quantitative analysis point of view;
（1）
（2）
in the method, in the process of the invention,for the real part of the electrical admittance signal of the piezoelectric ceramic sensor, N is the number of sampling points of the electrical impedance spectrum of the piezoelectric ceramic, subscripts 0 and 1 represent the electrical impedance measurement results of the piezoelectric ceramic sensor without water diversion and with water loss, ">Andrespectively representing the mean value and standard deviation of the electrical admittance signal;
s6, according to a system calibration result, the water loss information of the monitored soil body is determined by obtaining a slope deep soil-rock interface slip index through a conductivity and frequency relation curve of a distributed piezoelectric ceramic sensor array on a slope slip intelligent probe.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004160C1 (en) * | 1991-03-07 | 1993-12-15 | Кубанский государственный аграрный университет | Method and device for siloing of vitamin pumpkin |
| CN101763713A (en) * | 2009-12-15 | 2010-06-30 | 北京佳讯飞鸿电气股份有限公司 | Landslide early warning system and method adopting soil resistance measurement |
| CN104598737A (en) * | 2015-01-23 | 2015-05-06 | 水利部南京水利水文自动化研究所 | Method and system for forecasting debris flow |
| CN105096533A (en) * | 2015-08-18 | 2015-11-25 | 何满潮 | Debris flow monitoring and early-warning system and method |
| CN105203736A (en) * | 2015-10-15 | 2015-12-30 | 袁晓龙 | Multi-parameter monitoring system and method for geotechnical material in landslide area |
| CN110160435A (en) * | 2019-04-30 | 2019-08-23 | 青岛理工大学 | The moisture content increment of load response ratio Prediction Parameters that come down and method |
| JP2020012362A (en) * | 2018-07-13 | 2020-01-23 | 浙江大学Ｚｈｅｊｉａｎｇ Ｕｎｉｖｅｒｓｉｔｙ | Dynamic response time space reconstruction device |
| CN210572081U (en) * | 2019-09-04 | 2020-05-19 | 武汉地震工程研究院有限公司 | Reinforced concrete debonding monitoring devices based on piezoceramics and impedance |
| CN114002330A (en) * | 2021-09-15 | 2022-02-01 | 湖北震泰建设工程质量检测有限责任公司 | System for monitoring slope soil moisture content based on piezoelectric intelligent aggregate |
| CN114001686A (en) * | 2021-09-15 | 2022-02-01 | 湖北震泰建设工程质量检测有限责任公司 | Device for monitoring displacement deformation of sliding surface of soil slope |
-
2022
- 2022-09-27 CN CN202211182049.4A patent/CN115574702B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004160C1 (en) * | 1991-03-07 | 1993-12-15 | Кубанский государственный аграрный университет | Method and device for siloing of vitamin pumpkin |
| CN101763713A (en) * | 2009-12-15 | 2010-06-30 | 北京佳讯飞鸿电气股份有限公司 | Landslide early warning system and method adopting soil resistance measurement |
| CN104598737A (en) * | 2015-01-23 | 2015-05-06 | 水利部南京水利水文自动化研究所 | Method and system for forecasting debris flow |
| CN105096533A (en) * | 2015-08-18 | 2015-11-25 | 何满潮 | Debris flow monitoring and early-warning system and method |
| CN105203736A (en) * | 2015-10-15 | 2015-12-30 | 袁晓龙 | Multi-parameter monitoring system and method for geotechnical material in landslide area |
| JP2020012362A (en) * | 2018-07-13 | 2020-01-23 | 浙江大学Ｚｈｅｊｉａｎｇ Ｕｎｉｖｅｒｓｉｔｙ | Dynamic response time space reconstruction device |
| CN110160435A (en) * | 2019-04-30 | 2019-08-23 | 青岛理工大学 | The moisture content increment of load response ratio Prediction Parameters that come down and method |
| CN210572081U (en) * | 2019-09-04 | 2020-05-19 | 武汉地震工程研究院有限公司 | Reinforced concrete debonding monitoring devices based on piezoceramics and impedance |
| CN114002330A (en) * | 2021-09-15 | 2022-02-01 | 湖北震泰建设工程质量检测有限责任公司 | System for monitoring slope soil moisture content based on piezoelectric intelligent aggregate |
| CN114001686A (en) * | 2021-09-15 | 2022-02-01 | 湖北震泰建设工程质量检测有限责任公司 | Device for monitoring displacement deformation of sliding surface of soil slope |
Non-Patent Citations (1)
| Title |
|---|
| 《Feasibility Study of Interlayer Slide Monitoring Using Postembedded Piezoceramic Smart Aggregates》;Jianchao Wu等;《Journal of Sensors》;正文第1-11页 * |
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| CN115574702A (en) | 2023-01-06 |
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