KR20020048346A - Searching method for a part of damage in waterproof layer - Google Patents

Abstract

PURPOSE: A method for detecting damaged portion of water cut-off screen is provided to achieve an in-advance prevention against environmental contamination by detecting the damaged portion of water cut-off screen in a rapid and accurate manner. CONSTITUTION: A method comprises a first step(100) of installing a plurality of electrodes for detecting voltage onto the bottom surface and forming a water cut-off screen onto the resultant structure; a second step(102,104) of installing and executing a water cut-off screen damaged portion detection program in a computer system, and executing files for the arrangement of electrodes installed underneath the water cut-off screen; a third step(106,108) of setting a port and a speed required for the communication between the computer system and the recorder, and setting the name of text file where the value of electric potential difference to be measured by the electrode is indicated; a fourth step(110,112,114) of setting the order of measuring the electric potential difference to be measured by the electrode, and executing the execution command for starting electric potential difference measurement; a fifth step(116,118) of converting the data of electric potential difference measured through the electrode, into a text file, and converting the text file into an excel file; a sixth step(120,122) of creating GRD file by executing a software for expressing the excel file in two and three dimensional graphical representation; and a seventh step(124 to 130) of checking the existence of damaged portion of water cut-off screen by indicating the position of electrodes and creating two-dimensional graphical representation by using the GRD file.

Description

{SEARCHING METHOD FOR A PART OF DAMAGE IN WATERPROOF LAYER}

The present invention relates to a method for detecting damage to a barrier, and more particularly, to a method for detecting damage to a barrier using voltage data measured through current flow.

With the development of the chemical industry, chemical waste and municipal waste, which is poured out, are becoming a major source of pollution to the environment and groundwater. As the population grows gradually and the industry develops accordingly, the pollution of this environment and groundwater is expected to become more serious.

Recently, the interest in environmental protection has been increasing day by day, it is essential to form a screen for the purpose of water and waterproof when constructing a landfill or artificial pond. In addition, in order to prevent damage to the construction due to leakage of groundwater in the construction of various constructions, in particular in the case of tunnel construction, such a membrane is formed essentially for the purpose of obtaining a perfect waterproof effect on the tunnel ceiling surface.

As such, a barrier film is formed as a way to prevent environmental pollution and protect facilities by leaks, but devices or methods for early detection of leaks are not widely distributed.

Conventionally, a method of making a test well to check whether there is a leak, a method of checking through the naked eye, or a method of checking whether or not to leak through a lipid change has been used. However, the conventional methods described above have disadvantages such as not only requiring highly skilled personnel but also being expensive. In addition, there is still a problem that a leak point is found after a considerable time has elapsed since the water is leaked and the environment is contaminated.

Accordingly, it is an object of the present invention to provide a method for detecting damage to a barrier, which enables a faster and easier detection of damage to the barrier.

It is another object of the present invention to provide a method for detecting damage to a membrane to prevent environmental pollution in advance.

Another object of the present invention is to provide a method for detecting damage to a curtain to prevent a safety accident at a construction site.

In order to achieve the above object, in the present invention, in the method for detecting damage to the membrane formed to prevent the inflow of groundwater or leachate: A plurality of sensing electrodes for measuring the voltage is installed on the bottom surface of the membrane to be constructed Thereafter, forming a barrier film thereon; Installing and executing a shield damage detection program in a computer system, and executing an input file of a state of arrangement of the sensing electrodes installed under the shield; Setting a port and a speed necessary for communication between the computer system and the recorder, and setting a name of a text file in which a potential difference value to be measured by the sensing electrode is displayed; Setting a measurement order of a potential difference value to be measured by the sensing electrode, and executing an execution command for starting the potential difference measurement of the sensing electrode; Converting the potential difference data measured through the sensing electrode into a text file, and then converting the potential difference data into an Excel file; Generating a GDL file by executing software for representing the Excel file in a 2D graph and a 3D graph; After indicating the position of the sensing electrode, by generating a two-dimensional graph using the GD file, it provides a method for detecting damage to the liner film, characterized in that it comprises the step of checking whether there is a damaged area on the liner. .

1 is a block diagram of an apparatus for detecting a damage site of a shield according to an embodiment of the present invention.

2 is a flowchart illustrating a method of detecting a damaged part of a shield according to an embodiment of the present invention.

3 is an initial screen of execution of a damage shield detection program installed to measure a potential difference of a sensing electrode.

4 is a damage screen detection program screen showing a state of arrangement of the sensing electrodes installed to detect damaged areas.

FIG. 5 is a screen of a damage detection program screen for setting a port and a speed required for communication between a computer system and a recorder.

FIG. 6 is a screen illustrating a process of setting a name of a text file in which a value of a potential difference measured by a barrier film damage detection program is displayed.

7 is a screen illustrating a process of setting a measurement order of a sensing electrode for detecting a damaged part of the insulation film.

FIG. 8 is a screen illustrating a process of executing an execution command for starting a potential difference measurement using a sensing electrode for detecting a damaged portion of a liner. FIG.

9 is a screen showing a text file generated by the damage shield detection program.

FIG. 10 is a screen illustrating a state in which a text file illustrated in FIG. 9 is changed to an Excel file.

FIG. 11 is an execution screen of software for displaying the Excel file shown in FIG. 10 in 2D and 3D graphs.

FIG. 12 is a screen illustrating a process of generating an Excel file illustrated in FIG. 10 as a grd file.

FIG. 13 is a screen showing the position of the sensing electrode according to the damage shield detection program. FIG.

FIG. 14 illustrates a two-dimensional graph generated through the grd file illustrated in FIG. 12.

FIG. 15 illustrates a three-dimensional graph generated through the grd file illustrated in FIG. 12.

* Description of the symbols for the main parts of the drawings *

1: order film 2: sensing electrode

3: Cable 4: Control Box

5 active electrode 6 power supply

7: Bottom surface 8: Damaged part analysis part

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

1 is a block diagram of an apparatus for detecting a damage site of a shield according to an embodiment of the present invention.

Referring to the drawings, the damage site detection device of the order film is a sensing electrode (2) installed in the form of a pipe network according to the coordinates to measure the voltage on the bottom surface or the slope (7) of the order film (1) to be constructed, the order film ( 1) an active electrode 5 having a specific electrode positioned at an upper portion thereof and an opposite electrode positioned at a lower portion thereof, a power supply unit 6 supplying a current to the active electrode 5, measured from the sensing electrode 2; Cable (3) for transmitting voltage to the control box (4), Control box (4), the sensing electrode to aggregate the cable (3) to a point of the site where the damage is detected to facilitate the monitoring work And (2) and a damage site analysis section (8) made of hardware and software that uses the voltage data collected by the control box (4) to accurately and quickly show the damaged point on the coordinates.

As the sensing electrode 2, all of the sensing electrodes 2 commonly used in the technical field to which the present invention belongs may be used. In the present invention, a voltage sensor capable of measuring a flowing voltage is used. The sensing electrode 2 is installed in a lattice shape, but as the installation interval is narrowed, damage of the insulation film 1 can be detected accurately. However, the denser the spacing, the more the sensing electrodes are required, and thus the economical disadvantages are reduced. Therefore, it is desirable to maintain an appropriate spacing in consideration of the degree of risk of damage to the insulation film 1.

The voltage data measured through each of the sensing electrodes 2 installed is transmitted to the control box 4 connected in parallel through separate cables 3. In this case, the cable 3 is coated with an insulator made of any one of teflon, high density polyethylene (HDPE) or polyvinyl chloride (PVC) to prevent damage to the cable 3 or data transmission error. It is desirable to.

The control box 4 selects a point in the vicinity of a site suitable for a site situation for detecting a damaged part and causes the cable 3 to be collected therein, and is detected by the sensing electrode 2 to be connected to the cable 3. It makes it easy to monitor the transmitted voltage data. In addition, the active electrode 5 is installed so that a specific electrode is positioned above the order film 1 and an opposite electrode is located below the bottom (circle bottom) to allow voltage to flow up and down of the order film 1.

The damaged part analyzing unit 8 transmits the voltage data measured by the sensing electrode 2 to the control box 4 through the cable 3, and converts the voltage data into a text file. In other words, it shows the damage of the order film (1).

Briefly describing a method for detecting a damaged part according to the present invention, the active electrode 5 of the positive electrode (+) is positioned on the top of the order film 1, and the active electrode 5 of the negative electrode (-) on the bottom (base). Locate it. In addition, the amount of current flowing to the sensing electrode 2 is measured while the power supply unit 6 is 'off'. At this time, since the order film 1 is formed of an insulator, only a minute positive voltage flowing naturally is measured. Meanwhile, the voltage flowing to the sensing electrode 2 is measured while the power is 'on'. At this time, when the order film 1 is not damaged, only a minute amount of voltage similar to that of the power supply 'off' is measured so that the potential difference at the power supply “on / off” is not largely measured. The damage site analysis unit 8 analyzes such a small potential difference and detects that the order film 1 is not damaged. In contrast, when the order film 1 is damaged, when the power supply of the power supply unit 6 is 'on', the voltage sensed from the sensing electrode 2 is different from when the power is “off”. The damaged part analyzing unit 8 detects the damaged part of the insulation film by analyzing the potential difference at the time of power on or off.

Hereinafter, with reference to Figure 2 will be described in detail a method for detecting damage to the order film 1 according to the present invention.

2 is a flowchart illustrating a method of detecting a damaged part of a shield according to an embodiment of the present invention. 3 and 15 show screen capture screens of a program developed to execute a method for detecting damage to a curtain according to the present invention.

First, in step 100, a plurality of sensing electrodes for voltage measurement are installed on an upper surface of a bottom on which a barrier film is to be constructed, and then a barrier film is formed thereon.

In the step 102, the barrier system detection program according to the present invention is installed and executed in the computer system (see FIG. 3).

In step 104, an input file for the arrangement status of the sensing electrodes installed under the liner is executed. (See FIG. 4).

In step 106, a port and a speed required for communication between the computer system and the recorder are set (see FIG. 5).

In step 108, the name of the text file in which the potential difference value to be measured by the sensing electrode is displayed is set (see FIG. 6).

In step 110, the order of measurement of the potential difference value to be measured by the sensing electrode is set (see FIG. 7).

In step 112, the power supply of the power supply unit supplying power to the sensing electrode through the active electrode is set to the "on" and "off" state to measure the potential difference around the sensing electrode.

In step 114, an execution command for starting the potential difference measurement of the sensing electrode is executed. (See FIG. 8) In step 116, the measured potential difference data is converted into a text file (see FIG. 9).

In step 118, the text file in step 116 is converted into an Excel file (see FIG. 10).

In step 120, the software for representing the Excel file as a 2D graph and a 3D graph is executed. (See FIG. 11).

In step 122, a GRD file is generated using the Excel file (see FIG. 12).

In step 124, the position of the sensing electrode is displayed (see FIG. 13).

In step 126, a two-dimensional graph is generated using the GDL file (see FIG. 14).

In step 128, a 3D graph is generated using the GDL file (see FIG. 15). In the case where there is a damage site in the order curtain, as shown in Fig. 15, the position of the damage site appears.

In operation 130, it is determined whether a damaged part is detected in the shield. When the damaged portion is confirmed as shown in FIG. 15, a repair operation is performed to prevent damage to the insulation film. On the other hand, if the damaged part is not detected, the process returns to step 100 so that continuous detection of the damaged part is performed.

The present invention described above is described in accordance with the drawings, for example, but various changes and modifications are possible within the scope without departing from the spirit of the present invention according to the matter.

As described above, in the present invention, a sensing electrode is formed at a grid coordinate point of the insulating film, and the damage difference of the insulating film is analyzed by analyzing the potential difference around the sensing electrode measured when the current flows and when the current is cut off. By detecting quickly and accurately, there is an effect that can prevent problems such as environmental pollution in advance.

Claims (5)

In the method of detecting damage to the liner film formed to prevent the inflow of groundwater or leachate, Installing a plurality of sensing electrodes for voltage measurement on an upper surface of the bottom surface on which the order film is to be constructed, and then forming a order film on the upper part; Installing and executing a shield damage detection program in a computer system, and executing an input file of a state of arrangement of the sensing electrodes installed under the shield; Setting a port and a speed necessary for communication between the computer system and the recorder, and setting a name of a text file in which a potential difference value to be measured by the sensing electrode is displayed; Setting a measurement order of a potential difference value to be measured by the sensing electrode, and executing an execution command for starting the potential difference measurement of the sensing electrode; Converting the potential difference data measured through the sensing electrode into a text file, and then converting the potential difference data into an Excel file; Generating a GDL file by executing software for representing the Excel file in a 2D graph and a 3D graph; And displaying a position of the sensing electrode and generating a two-dimensional graph using the GDL file to determine whether there is a damage portion in the insulation layer. The method of claim 1, wherein the detection electrode is disposed in a lattice form. The method of claim 1, wherein the sensing electrode is formed of a voltage sensor. The method of claim 1, wherein the potential difference data is a voltage value around the sensing electrode measured when the current flows through the power supply and when the current does not pass. The method of claim 1, wherein when the voltage value of the surroundings measured by the sensing electrode is made to pass through the current and the case where the current is not made through the current is determined to be similar, it is determined that there is no damage to the insulation film, and through the sensing electrode. A method for detecting damage to a barrier, characterized in that it is determined that there is a damage to the barrier when the measured peripheral voltage value is not similar to when the current passes through the current.