KR101762364B1 - Composition surface wave exploration style ordinary times monitoring method - Google Patents

Abstract

The present invention discloses a surface monitoring system and method for monitoring the complex surface wave. The present invention relates to a monitoring system for monitoring a surface of a levee body through a combined exploration using both active and passive surface waves. This system monitors the change in stiffness of a monitored object at all times or periodically while increasing the depth of exploration. It is thus possible to easily grasp the stability risk of a monitored object such as a levee body such as a dam or a reservoir, And natural disasters such as earthquakes and heavy rains, it is possible to improve the human and economic efficiency at the time of exploration while preventing problems such as leakage or collapse.

Description

[0001] The present invention relates to a method for monitoring a complex surface wave,

The present invention relates to a monitoring technique using surface wave surveying, which is one of the seismic wave surveying techniques. More specifically, the present invention relates to a monitoring technique using a surface wave surveying method that increases a depth of a surveyed object such as a levee body such as a dam and a reservoir, It is possible to observe the stability risk of the monitoring object by monitoring at all times or periodically and thereby to prevent the problems such as the aging of the monitoring object and the natural disasters such as earthquake or heavy rainfall, And a monitoring method thereof.

Recently, collapse of levee bodies such as dams and reservoirs has been frequently occurred, which is mainly analyzed as maintenance failure, heavy rainfall and aging.

Fifty years have passed since the completion of 70% of the domestic reservoir dams, and 95% of reservoir dams over 30 years old. These obsolete surveillance objects are closely related to the lives of local residents and can be a potential risk factor that can cause loss of life and economic loss in the event of a problem.

Therefore, in order to secure the stability of the monitoring object and prevent the disaster, it is necessary to continuously monitor the change of the stiffness of the monitoring object to evaluate and monitor the risk.

Current probing methods such as electrical resistivity survey, electromagnetic survey, GPR, refraction / reflection / surface wave survey, and so on, are currently used for monitoring the stability of dams and reservoirs. .

However, the electrical resistivity survey is a method of calculating the electrical resistivity by generating a current and measuring a potential difference therefrom. The current varies depending on the water content of the underground medium, Since the result is different, a post-processing process is necessary to correct the result. In addition, the results obtained through the electrical resistivity survey have limitations in understanding the stiffness that is directly related to the stability of the monitored object as a qualitative result, and there is also a problem in deriving a quantitative value for the reinforcement and design of the monitored object .

Surface wave survey, which is one of the above geophysical survey methods, measures the shear wave velocity from surface waves (Rayleigh waves) occupying a high rate of 80% or more of the elastic wave energy. It is a function of the seismic characteristics (shear wave velocity, This is because it is easy to grasp the change in stiffness of the object to be monitored.

The shear wave velocity, which is the seismic property obtained from the surface wave survey, is a parameter directly related to the change of the stiffness of the monitored object as shown in the following equation, and is used to prevent disaster by detecting the change of stiffness due to the aging and leakage of the monitored object You can.

Therefore, it is possible to quantitatively analyze and analyze the monitoring data by making it possible to derive a quantitative value that can be utilized in seismic design in comparison with other geophysical methods. This is because the generation frequency band (the lower frequency, The depth of exploration is determined according to the characteristics of the underground medium, and the frequency band of the data obtained from the low to high Hz range can be extended by applying various types of oscillation sources during the probe.

[Mathematical Expression]

Stiffness (μ: stiffness) = ρ (V _s ) ²

Here, ρ is the density, V _s is the shear wave velocity

However, in the surface wave survey as described above, artificial oscillation sources (e.g., hammer, weight drop, vibrator, etc.) are used. Most of these artificial oscillation sources have a limit of about 10 to several hundred Hz. It is difficult to satisfy the depth of field and the resolution for the objects to be monitored of various sizes because the distance is within about 20 to 30 m.

In addition, conventional surface wave surveys have disadvantages in that they are inefficient in terms of economics, temporal aspects, and cost in terms of continuous manpower and facility construction when monitoring is performed using an artificial oscillation source. It has a drawback that the applicability is very low.

As a result, diversity is induced by supplementing the problem of surface wave exploration using an artificial oscillation source, relying on a single surface wave search using an artificial oscillation source to grasp the stability of the object to be monitored, It is necessary to apply and supplement additional technologies to reduce damage and prevent disasters through securing stability.

Japanese Patent Application Laid-Open No. 10-2008-0106620 (published on May 10, 2010)

Japanese Patent Application Laid-Open No. 10-2014-0119130 (Publication date 2015.02.16)

Accordingly, the present invention overcomes the disadvantages of the surface wave survey conducted by the conventional single survey method, and exploration for a levee body is performed through a combined exploration using both active and passive surface wave exploration. It is possible to monitor the stability risk of the monitored object such as the levee body such as the dam and the reservoir easily by monitoring the change of the stiffness of the monitored object at all times or periodically while increasing the depth of the monitor, And an object of the present invention is to provide a continuous monitoring system and a monitoring method thereof, which can prevent problems such as leakage or collapse due to natural disasters such as earthquakes and heavy rainfall in advance.

In order to accomplish the above object, the present invention provides a surveillance system for monitoring the complex surface wave type, comprising: a water detector installed in a monitored object for sensing an elastic wave energy oscillated in an active or passive manner and converting the sensed energy into an analog electrical signal; A multi-control panel for controlling the water sampler and converting an analog electric signal converted and output from the water sampler into data of a digital signal; A memory unit for storing data information on the active or passive elastic wave energy converted from the multi-control unit; A transmission module that is controlled by the multi-control unit and wirelessly transmits data stored in the memory unit; A power supply unit for supplying driving power; And comparing the data information of the active or passive elastic wave energy transmitted from the transmission module with the reference data of the active or passive elastic wave energy preliminarily constructed from the initial exploration to determine the stiffness change characteristics of the underground medium in which the monitored object is installed, A monitoring control unit for evaluating the stability of the object to be monitored; .

In addition, the water sampler is installed in multiple stages within the monitored object.

The object to be monitored may be provided with a fixed block provided with a first fastening portion, a second fastening portion with which the first fastening portion can be fastened by the first fastening portion, Thereby fixing the water sampling device.

In addition, the water jacket is configured to be protected by the protective box in a state of being fixed to the fixed block.

In addition, the passively oscillated elastic wave energy sensed by the water circulator is an elastic wave energy generated as a natural factor in the surroundings of the monitored object.

In addition, the natural factors are seismic energy generated from any one of automobile vibration, vibration due to civil engineering work, vibration due to agricultural machinery work, waviness, and earthquake, or seismic energy in which they act in combination.

The active oscillated elastic wave energy sensed by the oscillator is an elastic wave energy artificially generated by using an artificial oscillator in the vicinity of the monitored object.

Further, the artificial oscillator is any one of a hammer, a weight drop, and a vibrator.

In addition, the multi-control panel converts an analog electric signal into digital signal data, and performs a sensitivity control based on the arrangement of the water conditioner, data acquisition according to the size of the active or passive type of elastic wave energy, ), A data acquisition time (sampling rate), and a data acquisition interval (sampling interval).

In addition, the multi-control panel is provided with a multi-stage slot for extending the port and the main board according to the number of installed water jacks.

The power supply unit may include a solar cell panel that is responsive to solar energy; A photovoltaic power generation module for converting solar energy into electrical energy from the solar cell panel; A power converter for converting electrical energy converted from the photovoltaic power generation module into a power source; And a rechargeable battery which is charged by a power source converted by the power converter; .

In addition, the monitoring control unit generates a phase velocity distribution according to the frequency band from the acquired active or passive oscillated elastic wave energy information, and analyzes the complex inversion of the active or passive elastic wave energy from the generated phase velocity distribution, An analyzing program for sequentially analyzing the shear velocity, the stiffness, and the poisson's ratio and analyzing the stiffness change characteristics of the monitored object at all times or periodically to evaluate the stability of the monitored object It will be mounted.

Also, the phase velocity distribution is a dispersion image.

In addition, the monitoring control unit is configured to display the data change amount of the active or passive elastic wave energy, which is always or periodically analyzed through the analysis program, on the display unit.

According to another aspect of the present invention, there is provided a monitoring method implemented by the continuous surface monitoring system of the present invention, comprising the steps of: (a) installing a water depth detector and an artificial oscillator, which are equipment for seismic energy exploration according to the size and site conditions of a monitored object step; (b) detecting the active oscillated seismic energy using the equipment installed from the step (a) and the passive oscillated seismic energy due to a natural factor occurring in the periphery of the monitored object, And storing the set value; (c) The monitoring controller monitors the passive elastic wave energy generated by a natural factor around the monitored object at all times or periodically through the stirrer installed from the step (a), and transmits the reference data set and saved from the step (b) Comparing; (d) If an abnormality of the deviation is found between the information regularly or periodically monitored and the reference data as a result of the comparison in the step (c), the elastic wave energy is generated through the active oscillation source and sensed by the oscillator and transmitted to the monitoring controller step; And (e) from the step (d), the monitoring control unit monitors the seismic energy generated artificially in the vicinity of the monitored object, compares the analyzed seismic energy with the reference data set and stored in the step (b) Evaluating the stability of the monitored object; .

In the step (c), the monitoring control unit monitors the passive seismic energy generated by a natural factor around the monitored object at all times or periodically, extracts the phase velocity distribution according to the frequency band from the passive oscillated seismic energy information Generating a distributed image; And sequentially deriving a shear velocity, a stiffness, and a poisson's ratio from the dispersion image of the generated phase velocity distribution through an inverse calculation; As shown in FIG.

In the step (e), when monitoring active seismic energy generated artificially by an artificial oscillator in the vicinity of the monitored object, the monitoring control unit calculates the dispersion image of the phase velocity distribution according to the frequency band from the active oscillated elastic wave energy information ≪ / RTI > And sequentially deriving a shear velocity, a stiffness, and a poisson's ratio from the dispersion image of the generated phase velocity distribution through an inverse calculation; As shown in FIG.

As described above, the present invention can continuously or periodically monitor the change in stiffness of the object to be monitored while increasing the depth of exploration for a levee body through a combined exploration using both active and passive surface wave exploration This can be used to easily identify the stability risk of monitored objects such as levee bodies such as dams and reservoirs, as well as to prevent the occurrence of leaks or collapses due to natural disasters such as aging, It is possible to expect the effect of preventing the problems beforehand.

In addition, the present invention constitutes a monitoring system that utilizes peripheral activities such as human activity, vehicle movement, waving, and earthquake as an oscillation source, thereby eliminating the need for separate exploration through manpower input, The effect of increasing the efficiency can be expected.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an overall monitoring system for a surface wave survey type of an embodiment of the present invention. FIG.
FIG. 2 is a block diagram of a surface monitoring system for continuous monitoring according to an embodiment of the present invention. FIG.
3 is an enlarged perspective view showing an installation state of a water jug in a monitored object according to an embodiment of the present invention.
4 is an exploded view of a monitoring object and a water jug according to an embodiment of the present invention.
FIG. 5 is a flow chart of a method for continuously monitoring a complex surface wave type according to an embodiment of the present invention. FIG.
FIG. 6 is a simulation graph of a dispersion image in which the data depth is increased by supplementing the data and performing a complex search using an active and a passive embodiment according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification.

In this specification, the terms "comprises" or "having ", and the like, specify that the presence of stated features, integers, steps, operations, elements, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

In addition, the embodiments described herein will be described with reference to cross-sectional views and / or plan views, which are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but may include variations in shapes that are created or required according to the manufacturing process. For example, the area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have schematic attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the apparatus and are not intended to limit the scope of the invention.

Like reference numerals refer to like elements throughout the specification. Accordingly, although the same reference numerals or similar reference numerals are not mentioned or described in the drawings, they may be described with reference to other drawings. Further, even if the reference numerals are not shown, they can be described with reference to other drawings.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram of a surface monitoring system for continuous surface wave survey according to an embodiment of the present invention. FIG. 2 is a block diagram of a surface monitoring system for continuous surface wave survey according to an embodiment of the present invention. FIG. 4 is an exploded view of a monitoring object and a water detector according to an embodiment of the present invention. FIG. 4 is an enlarged perspective view showing an installation state of a water detector in an object to be monitored.

1 to 4, the system for monitoring the complex surface wave according to the present invention includes a water depth detector 10, a multi control panel 20, a memory unit 30, a transmission module 40, A power supply unit 50, and a monitoring and control unit 60.

The water depth detector 10 is installed in multiple stages at predetermined intervals in a monitored object 100 such as a dam body and a reservoir body such as a reservoir. The water detector 10 senses the active and passive elastic wave energy, And outputs the converted signal to the multi-control panel 20.

3 and 4, a plurality of fixing blocks 101 having a first coupling part (e.g., a nut) 101a are installed in the monitoring object 100, The first fastening portion 101a and the second fastening portion 101b are formed with a second fastening portion such as a bolt 11 which can be fastened by the first fastening portion 101a. And the block 101 is fixed to the water jacket 10.

In addition, the water jug 10 may be configured to be protected by a protective box 70 made of stainless steel in a state of being fixed to the fixed block 101. This may prevent theft, And other contaminants.

Here, the passively oscillated elastic wave energy sensed by the water turbine 10 is a natural factor in the vicinity of the monitored object 100, that is, vibration due to automobile vibration, civil engineering work, vibration due to agricultural machinery work, It is an elastic wave energy generated in any one of them or an elastic wave energy generated by a combination of these.

The active oscillated elastic wave energy sensed by the water sampling device 10 is an elastic wave energy artificially generated in a hammer, a weight drop, a vibrator, or the like, which is an artificial oscillator, in the vicinity of the monitored object 100.

The multi control panel 20 controls the multivibrator 10 so as to convert an analog electrical signal converted and output from the water sampler 10 into digital signal data and store it in the memory unit 30 .

At this time, the multi-control unit 20 is provided with a multi-stage slot unit 21 for expanding the port and the main board according to the number of the water conditioner 10. The multi-control unit 20 includes an analog electric signal A plurality of sensors 10 arranged in a multi-stage according to the environment setting, a sensitivity control for data acquisition depending on the size of the active or passive oscillating elastic wave energy, data acquisition A control program that controls a sampling rate and a sampling interval is installed.

The water jacket 10 and the multi control panel 20 are connected to each other by an electric cable 200. The electric cable 200 is installed in a waterproof plastic pipe will be.

The memory unit 30 stores data information of the active or passive elastic wave energy converted from the multi-control unit 20. The memory unit 30 stores data information of the active or passive elastic wave energy, And the acquisition interval is 0.001 seconds, so that it is configured to have a large capacity so that the elastic wave information can be continuously stored for at least 6 hours.

That is, the memory unit 30 is a large-capacity storage medium connected to the multi-control unit 20 to store data and to be able to back up data by a user as necessary. The memory unit 30 may include passive seismic energy information It is possible to control the data capacity according to the surveying method and the site conditions or according to the control factors (sampling time, interval, sensitivity, etc.), and the natural source of the natural factor for the exploration of passive seismic energy Because the characteristics are different in each site, it is applied considering this.

The transmission module 40 is configured to wirelessly transmit data stored in the memory unit 30 to the monitoring control unit 60 through the mobile communication network while being controlled by the multi control unit 20. [

The power supply unit 50 supplies driving power to each component of the monitoring system according to the embodiment of the present invention and includes a solar cell panel 51 responsive to solar energy, A power converter 53 for converting the electrical energy converted from the photovoltaic power generation module 52 into a power source, and a power converter 53 for converting the electric energy converted from the photovoltaic power generation module 52 into a power source, And a rechargeable battery 54 that is charged by a power source converted by the power source 54. This is to enable power supply and long-term monitoring by itself without a separate electrical installation.

The monitoring control unit 60 compares the data information of the active or passive elastic wave energy wirelessly transmitted from the transmission module 40 through the mobile communication network with the reference data of the active or passive elastic wave energy preformed from the initial probe, The monitoring apparatus 100 is configured to analyze the stiffness change characteristics of the underground medium provided with the monitored object 100 at all times or periodically and to evaluate the stability of the monitored object 100 based on the analysis results.

Here, the monitoring control unit 60 may be installed in the vicinity of the monitored object 100 or may be installed at a remote location, and the location thereof may be any of those capable of wireless communication with the transmission module 40 through the mobile communication network .

At this time, an analysis program is installed in the monitoring control unit 60. The analysis program generates a dispersion image of the phase velocity distribution according to the frequency band from the obtained active or passive oscillated elastic wave energy information, The shear velocity, the stiffness, and the poisson's ratio are sequentially analyzed from the distributed image of the generated phase velocity distribution through the complex inversion analysis of the active or passive elastic wave energy, 100 can be always or periodically analyzed and the stability of the monitored object 100 can be evaluated according to the analysis.

The monitoring unit 60 constitutes a display unit 61 such as a monitor. The display unit 61 displays data variation amounts of active or passive elastic wave energy analyzed at all times or periodically through the analysis program .

Here, the monitoring control unit 60 extracts the active and passive elastic wave energies from the complexly sensed active and passive elastic wave energies when sensing the elastic wave energy oscillated in a passive or active manner using a natural element or an artificial oscillator, , It is possible to generate a dispersion image that increases the depth of exploration while supplementing the data and extending the low frequencies.

As described above, the surveillance system and method for monitoring the complex surface wave according to the embodiment of the present invention can be applied to the surveillance of the seismic energy according to the scale and the site conditions of the monitored object 100 (10) and an artificial oscillator.

That is, after the fixed block 101 having the first coupling part 101a is installed at a predetermined interval in the monitored object 100, the fixed block 101 is provided with the second coupling part 11, And a hammer, a weight drop, a vibrator, and the like are disposed around the monitored object 100 as the artificial oscillator.

In the next step, the artificial oscillator, which is the equipment installed as described above, is generated while generating active elastic wave energy while moving according to the position of the water collector 10, then sensed by the water collector 10 and transmitted through the transmission module 40, And transmits the wireless signal to the monitoring unit 100. The sensing unit 100 detects the passive elastic wave energy due to a natural factor occurring in the surroundings of the monitored object 100 by the water collector 10, The monitoring unit 60 sets the active or passive elastic wave energy received through the transmission module 40 as reference data and stores it.

When the elastic wave energy is generated by natural factors in the vicinity of the monitored object 100 through the water attenuator 10 provided at the multi-stage stage of the monitored object 100, the elastic wave energy is transmitted to the multi- The monitoring control unit 60 can monitor the elastic wave energy at all times or periodically. At this time, the monitoring control unit 60 sets the monitored information to the monitoring control unit 60, And compared with the stored reference data.

At this time, when the monitoring control unit 60 monitors the elastic wave energy generated by a natural factor around the monitored object 100 at all times or periodically, the monitoring control unit 60 detects the frequency of the passive type oscillated elastic wave energy information Shear velocity, stiffness, and poisson's ratio are sequentially derived from the distributed image of the generated phase velocity distribution through inverse analysis, It is compared with the reference data.

When the abnormality of the deviation is found between the information monitored at all times or periodically and the reference data as a result of the comparison, the operator is notified of the abnormality. Accordingly, The active elastic wave energy generated by the oscillator 10 is sensed by the water receiver 10 and then stored in the memory unit 30 by the multi control panel 20, ) To the monitoring control unit (60).

Then, the monitoring control unit 60 monitors the active seismic energy generated artificially in the vicinity of the monitored object 100, compares and analyzes the active seismic energy with reference data stored in advance and stores the monitored object 100) can be evaluated.

That is, when monitoring the active seismic energy artificially generated by the artificial oscillator in the vicinity of the monitored object 100, the monitoring control unit 60 generates a dispersed image of the phase velocity distribution from the active oscillated acoustic wave energy information Shear velocity, stiffness, and poisson's ratio can be sequentially derived from the distributed image of the generated phase velocity distribution through inverse analysis. Based on the derived information, It is possible to always or periodically analyze the stiffness change characteristics of the underground medium in which the monitored object 100 is installed and also to evaluate the stability of the monitored object 100 according to the analysis. Or the passive type of elastic wave energy is displayed on the display unit 61 while the administrator displays the data change amount on the display unit 61 It is possible to remotely monitor whether or not the monitored object 100 is safe while viewing the monitored information and to prevent economic and human damage from a disaster such as a dam and a reservoir as the monitored object 100 will be.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that such changes and modifications are within the scope of the claims.

10; A water column 11; The second fastening portion
20; A multi-control panel 21; Slot portion
30; A memory unit 40; Transmission module
50; Power supply 60; Monitoring Control Department
61; A display section 70; Protective box
100; The monitored object 101; Fixed block
101a; The first fastening portion

Claims (17)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete (a) installing a water source and an artificial oscillator, which are equipment for seismic energy exploration according to the size and site conditions of the object to be monitored;
(b) detecting the active oscillated seismic energy using the equipment installed from the step (a) and the passive oscillated seismic energy due to a natural factor occurring in the periphery of the monitored object, And storing the set value;
(c) The monitoring controller monitors the passive elastic wave energy generated by a natural factor around the monitored object at all times or periodically through the stirrer installed from the step (a), and transmits the reference data set and saved from the step (b) Comparing;
(d) If an abnormality of the deviation is found between the information regularly or periodically monitored and the reference data as a result of the comparison in the step (c), the elastic wave energy is generated through the active oscillation source and sensed by the oscillator and transmitted to the monitoring controller step; And
(e) Monitoring from the step (d), the monitoring controller monitors the active seismic energy generated artificially in the vicinity of the monitored object, compares the active seismic energy with the reference data set and stored in the step (b) Evaluating the stability of the monitored object; The method of claim 1, 16. The method of claim 15,
In the step (c), the monitoring control unit monitors the passive seismic energy generated by a natural factor around the monitored object at all times or periodically,
Generating a dispersed image of a phase velocity distribution according to a frequency band from passive oscillated elastic wave energy information; And
Sequentially deriving a shear velocity, a stiffness, and a poisson's ratio from the dispersed image of the generated phase velocity distribution through inverse analysis; The method of claim 1, further comprising: 16. The method of claim 15,
In the step (e), when monitoring the active seismic energy generated artificially by the artificial oscillator in the vicinity of the monitored object,
Generating a dispersed image of a phase velocity distribution according to a frequency band from the oscillated elastic wave energy information of the active type; And
Sequentially deriving a shear velocity, a stiffness, and a poisson's ratio from the dispersed image of the generated phase velocity distribution through inverse analysis; The method of claim 1, further comprising:

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