Concrete surface depth measurement system and detection method for diaphragm wall pouring construction

Abstract

The invention discloses a diaphragm wall pouring construction concrete surface depth measurement system and a detection method, and relates to the technical field of diaphragm wall construction, the system comprises a signal feedback line, a main connection wire and a calibration resistance wire, a first end of the signal feedback line is electrically connected with a measurement contact of a display structure, and a second end of the signal feedback line is electrically connected with a second end of the main connection wire; the first end of the main connecting wire is electrically connected with the positive electrode of the display structure, and the first end of the calibration resistance wire is electrically connected with a calibration contact of the display structure; the second end of the signal feedback line, the second end of the main connecting wire and the second end of the calibration resistance line are electrically connected, and the second ends of the three are connected to the counterweight structure. The signal feedback line is provided with a plurality of depth sensing resistors which are arranged at equal intervals; the display structure is used for displaying the depth of the concrete surface in the pouring slotted hole in real time; the number of the blasting resistors is equal to that of the depth sensing resistors, and the blasting resistors and the depth sensing resistors are connected in parallel one by one; the blasting resistor is provided with a breakable shell; the depth of the concrete surface is measured through resistance change, the precision is high, construction is efficient, and cost is saved.

Description

Technical Field

[0001] The present application generally relates to the technical field of anti-seepage wall construction, and specifically to a system and method for measuring the depth of a concrete surface during anti-seepage wall pouring construction. Background Art

[0002] During the pouring of underground cutoff walls, timely monitoring of concrete surface rise is crucial for achieving high-quality and efficient construction of cutoff walls or bored piles. Concrete is introduced through a conduit into the bottom of a slot filled with retaining slurry. As the concrete pour increases, the concrete surface gradually rises, making accurate monitoring of its depth crucial.

[0003] At present, there are two main technologies used to measure the depth of concrete surface. The first is the manual hanging hammer measurement method, such as Figure 1 As shown, the technicians put the hammer connected to the rope into the slot for detection. When the hammer is lifted by the concrete surface, the length of the rope is read to obtain the depth of the concrete surface. The second method is to arrange a detection device on the conduit for monitoring, and the device senses the position of the concrete surface and transmits signals.

[0004] However, both of these existing measurement methods have obvious flaws. The manual hanging hammer measurement method is greatly affected by the differences in the technicians' operating techniques and hand feel. The depth of the concrete surface measured at the same time and place may have large errors, and even viscous mud may be mistaken for concrete. At the same time, the construction site environment is complex, and this method requires special personnel to use special equipment for regular measurements, which is time-consuming and labor-intensive. In addition, the method of arranging a detection device on the conduit requires the signal cable to be led to the bottom surface, and the installation and recovery process of the detection device is extremely cumbersome, affecting construction efficiency. Therefore, we provide a concrete surface depth measurement system and detection method for anti-seepage wall pouring construction to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a concrete surface depth measurement system and detection method for anti-seepage wall pouring construction that improves the accuracy and reliability of concrete surface depth measurement.

[0006] In a first aspect, the present application provides a system for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall, comprising: A signal feedback line, a main connecting wire, and a calibration resistance line are used in conjunction with each other. The first end of the signal feedback line is electrically connected to the measurement contact of the display structure, the first end of the main connecting wire is electrically connected to the positive electrode of the display structure, and the first end of the calibration resistance line is electrically connected to the calibration contact of the display structure; the second end of the signal feedback line, the second end of the main connecting wire, and the second end of the calibration resistance line are electrically connected, and the second ends of the three are all connected to the counterweight structure; the signal feedback line has multiple depth sensing resistors arranged at equal intervals; the display structure is used to display the depth of the concrete surface in the casting slot in real time; Blasting resistors, the number of the blasting resistors being equal to the number of the depth sensing resistors, and the blasting resistors and the depth sensing resistors being connected in parallel one by one; the blasting resistors having a breakable shell; The measurement system is lowered into the casting slot, and concrete can be poured after the counterweight structure touches the bottom of the casting slot. During pouring, the concrete surface rises, and the concrete squeezes the outer shell of the blasting resistor one by one from the end close to the counterweight structure to the end away from the counterweight structure, so that the blasting resistor forms a short circuit, and the resistance value of the corresponding depth sensing resistor increases. The display structure determines and displays the real-time concrete surface depth based on the number of blasting resistors that form a short circuit, the spacing of the depth sensing resistors, the resistance value of the calibration resistance line, and the resistance value between the positive pole and the calibration contact.

[0007] According to the technical solution provided in the embodiment of the present application, the interior of the shell is hollow and has an opening; The blasting resistor also includes: a sealing cover, the sealing cover being connected to an edge of the opening of the shell, forming a closed cavity between the sealing cover and the shell, and the closed cavity being filled with a filling liquid; A thin film resistor is arranged on the surface of the housing; the thin film resistor is connected to two pins, and the pins are used to be electrically connected to the signal feedback line.

[0008] According to the technical solution provided in the embodiment of the present application, the material of the shell is glass or ceramic.

[0009] According to the technical solution provided in the embodiment of the present application, the display structure includes: A display module, a calculation module, and a processing module are communicatively connected, wherein the calculation module has the positive electrode, the measuring contact, and the calibration contact; the calculation module is used to count the number of blasting resistors that form a short circuit; and the processing module is used to determine the real-time concrete surface depth based on the number of blasting resistors 1 that form a short circuit, the spacing of the depth sensing resistors, the resistance value of the calibration resistance wire, and the resistance value between the positive electrode and the calibration contact; The display module is used to display the real-time concrete surface depth.

[0010] According to the technical solution provided in the embodiment of the present application, the signal feedback line further includes: A feedback cable is provided on which a plurality of depth sensing resistors are arranged at equal intervals.

[0011] According to the technical solution provided in the embodiment of the present application, the distance between two adjacent depth sensing resistors is 0.25 m, and the size of the blasting resistor is 1.5 times the size of the aggregate in the concrete.

[0012] In a second aspect, the present application provides a method for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall, which is based on the above-mentioned system for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall. The method comprises the following steps: Weld the signal feedback wire, main connecting wire and the second end of the calibration resistance wire together, and then connect them to the counterweight structure; Place the connected counterweight structure into the slot to be cast, and extend the signal feedback line, main connecting wire, and calibration resistance line vertically to the bottom of the slot to be cast. When the counterweight structure touches the bottom of the slot to be cast, reserve the target length of the signal feedback line, main connecting wire, and calibration resistance line at the top of the slot and fix them; Connect the measuring contact, positive pole and calibration contact on the display structure to the signal feedback line, main connection wire and calibration resistance line respectively; When pouring concrete, as the concrete surface rises, the concrete squeezes the blasting resistors, causing them to form a short circuit. The display structure determines and displays the real-time concrete surface depth based on the number of blasting resistors that form the short circuit, the spacing of the depth sensing resistors, the resistance value of the calibration resistance wire, and the resistance value between the positive pole and the calibration contact.

[0013] According to the technical solution provided in the embodiment of the present application, the following steps are also included: When the display structure detects that the number of blasting resistors that form a short circuit has not changed within a preset time period, an alarm message is issued; the alarm message is used to prompt a pouring abnormality.

[0014] According to the technical solution provided in the embodiment of the present application, the display structure determines and displays the real-time concrete surface depth based on the number of blasting resistors forming the short circuit, the spacing of the depth sensing resistors, the resistance value of the calibration resistance wire, and the resistance value between the positive electrode and the calibration contact. Specifically, the following steps are included: The linear distance between the concrete surface and the bottom of the casting slot is calculated based on the number of blasting resistors that form the circuit and the spacing between the depth sensing resistors; The laying length of the calibration resistance wire is calculated based on the resistance value of the calibration resistance wire and the resistance value between the positive electrode and the calibration contact; Calculate the difference between the laying length of the calibration resistance line and the straight-line distance between the concrete surface and the bottom of the casting slot, obtain the real-time concrete surface depth and display it on the display structure.

[0015] According to the technical solution provided in the embodiment of the present application, the following steps are also included: Real-time monitoring of resistance value changes caused by a short circuit in the blasting resistor. When a change in resistance value is detected and the change in resistance value meets a false triggering condition, it is determined that the current resistance value change has the possibility of false triggering. The false triggering condition is that the amplitude of the resistance value change caused by the short circuit in the blasting resistor exceeds a preset amplitude range, or the number of resistance value changes caused by the short circuit in the blasting resistor per unit time exceeds a preset allowable number; Acquire a historical data collection set of a display structure; the historical data collection set includes at least the resistance value between the positive electrode and the calibration contact point collected each time and a timestamp corresponding to the resistance value; Based on the historical data collection set, the continuity and regularity of the resistance value change are analyzed; if the regularity of the resistance value change shows a sudden change or abnormal fluctuation that does not conform to the concrete surface rising, the current resistance value change is determined to be a false trigger, and the resistance data corresponding to the current resistance value change is deleted from the display structure.

[0016] It can be seen from the above technical solution that this application has at least the following beneficial effects: The present application provides a system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall, comprising: a signal feedback line, a main connecting wire and a calibration resistance line used in conjunction with each other, wherein the first end of the signal feedback line is electrically connected to the measuring contact of a display structure, the first end of the main connecting wire is electrically connected to the positive electrode of the display structure, and the first end of the calibration resistance line is electrically connected to the calibration contact of the display structure; the second end of the signal feedback line, the second end of the main connecting wire and the second end of the calibration resistance line are electrically connected, and the second ends of the three are all connected to a counterweight structure; the signal feedback line has a plurality of depth sensing resistors arranged at equal intervals; the display structure is used to display the depth of the concrete surface in the pouring slot in real time; the number of blasting resistors is related to the depth The number of depth sensing resistors is equal, and the blasting resistors and the depth sensing resistors are connected in parallel one by one; the blasting resistors have a breakable shell; the measurement system is lowered into the casting slot, and concrete can be poured after the counterweight structure touches the bottom of the casting slot; during pouring, the concrete surface rises, and the concrete squeezes the shells of the blasting resistors one by one from the end close to the counterweight structure to the end away from the counterweight structure, causing the blasting resistors to form a short circuit, and the resistance value of the corresponding depth sensing resistor increases. The display structure determines and displays the real-time concrete surface depth based on the number of short-circuited blasting resistors, the spacing between the depth sensing resistors, the resistance value of the calibration resistance wire, and the resistance value between the positive electrode and the calibration contact.

[0017] The essential difference between concrete and slurry is that concrete contains aggregate (large particles, high-hardness stone), which is absent in slurry. Based on this principle, this application utilizes a blasting resistor in conjunction with a depth-sensing resistor. The blasting resistor has a breakable outer shell. When the measurement system is lowered into the casting slot and pouring begins, as the concrete surface rises, the aggregate in the concrete gradually compresses the outer shell of the blasting resistor from the end closest to the counterweight structure to the end farther from the counterweight structure. The hardness and irregular shape of the aggregate exert concentrated stress on the outer shell of the blasting resistor, causing it to break and, in turn, open the blasting resistor. At this point, the resistance of the depth-sensing resistor connected in parallel increases. The display structure records the number of blasting resistors that have broken, and combines this with the known spacing of the depth-sensing resistors, the resistance of the calibration resistor wire, and the resistance between the positive terminal and the calibration contact to accurately determine the real-time concrete surface depth. This measurement method accurately identifies concrete based on its physical properties, effectively avoiding misjudgment caused by the similar touch of viscous mud and concrete in traditional manual hammer measurement, greatly improving the accuracy of measurement results.

[0018] Furthermore, the measurement system designed in this application is lowered into the casting slot before pouring, and can automatically display the depth of the concrete surface in real time during the pouring process; there is no need for a dedicated person to use special equipment for regular measurements, which reduces manpower input and measurement time, and improves construction efficiency. In addition, compared with the traditional manual hanging hammer measurement that requires dedicated operation and the arrangement of detection devices on the conduit that requires cumbersome cable routing and recycling, the automated measurement method of this system significantly reduces the labor intensity of construction workers, allowing construction workers to focus on other key construction links and optimize the construction process. Moreover, except for the display structure, all other consumables are disposable and do not need to be recycled, reducing equipment recycling costs and processes. In addition, cables such as signal feedback lines can be cut and extended like ordinary cables, which can be flexibly adjusted according to different casting slot depths. The degree of standardization is high, which is conducive to large-scale production and application, and effectively controls construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0020] Figure 1 This is the measurement principle diagram of the manual hanging hammer measurement method.

[0021] Figure 2 This is a structural diagram of the concrete surface depth measurement system for anti-seepage wall pouring construction.

[0022] Figure 3 Schematic diagram of the structure of the blasting resistor.

[0023] Figure 4 A structural diagram showing the structure.

[0024] Figure 5 This is an example diagram of the concrete surface depth measurement system for the pouring construction of the anti-seepage wall.

[0025] Figure 6 This is the measurement principle diagram of the concrete surface depth measurement system for anti-seepage wall pouring construction.

[0026] Figure 7 This is a flow chart of the method for measuring the depth of the concrete surface during the pouring construction of the anti-seepage wall.

[0027] Numbers in the figure: 1. Blasting resistor; 2. Signal feedback line; 3. Display structure; 4. Main connecting wire; 5. Calibration resistance wire; 6. Counterweight structure; 11. Housing; 12. Thin film resistor; 13. Pin; 14. Sealing cover; 15. Filling liquid; 21. Feedback cable; 22. Depth sensing resistor; 31. Positive pole; 32. Measuring contact; 33. Calibration contact; 34. Display module; 35. Calculation module; 36. Processing module. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] like Figure 2 As shown, the present application provides a system for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall, comprising: The signal feedback line 2, the main connecting wire 4, and the calibration resistance line 5 are used together. The first end of the signal feedback line 2 is electrically connected to the measurement contact 32 of the display structure 3, the first end of the main connecting wire 4 is electrically connected to the positive electrode 31 of the display structure 3, and the first end of the calibration resistance line 5 is electrically connected to the calibration contact 33 of the display structure 3; the second end of the signal feedback line 2, the second end of the main connecting wire 4, and the second end of the calibration resistance line 5 are electrically connected, and the second ends of the three are all connected to the counterweight structure 6; the signal feedback line 2 has a plurality of equally spaced depth sensing resistors 22; the display structure 3 is used to display the depth of the concrete surface in the casting slot in real time; Blasting resistors 1, the number of blasting resistors 1 is equal to the number of depth sensing resistors 22, and the blasting resistors 1 and the depth sensing resistors 22 are connected in parallel one by one; the blasting resistors 1 have a breakable shell 11; The measurement system is lowered into the casting slot, and concrete can be poured after the counterweight structure 6 touches the bottom of the casting slot. During pouring, the concrete surface rises, and the concrete squeezes the outer shell 11 of the blasting resistor 1 one by one from the end close to the counterweight structure 6 to the end away from the counterweight structure 6, causing the blasting resistor 1 to form a short circuit, and the resistance value of the corresponding depth sensing resistor 22 increases. The display structure 3 determines the real-time concrete surface depth and displays it based on the number of blasting resistors 1 that form a short circuit, the spacing between the depth sensing resistors 22, the resistance value of the calibration resistance wire 5, and the resistance value between the positive electrode 31 and the calibration contact 33.

[0031] It should be noted that if Figure 2 、 Figure 5 and Figure 6 As shown, the first end of the signal feedback line 2 is connected to the measurement contact 32 of the display structure 3, used to transmit the resistance change of the depth sensing resistor 22. The depth sensing resistors 22 are evenly spaced along the signal feedback line 2. The first end of the main connecting wire 4 is connected to the positive terminal 31 of the display structure 3 to provide power to the system. The first end of the calibration resistance line 5 is connected to the calibration contact 33 of the display structure 3 to assist in determining parameters such as the total installation length of the system. The second ends of these three cables are electrically connected and all connected to the counterweight structure 6, forming a complete electrical connection loop. The number of blasting resistors 1 is equal to the number of depth sensing resistors 22, and they are connected in parallel one by one.

[0032] Blasting resistor 1 has a breakable outer shell 11. When outer shell 11 is intact, thin-film resistor 12 is electrically connected to signal feedback line 2 via pin 13, forming a parallel circuit between blasting resistor 1 and depth-sensing resistor 22. When concrete aggregate compresses and breaks blasting resistor outer shell 11, pin 13 becomes disconnected from signal feedback line 2, leaving the branch containing the blasting resistor open. Only depth-sensing resistor 22 remains in the parallel circuit, significantly increasing the total resistance of signal feedback line 2.

[0033] The counterweight structure 6 is connected to the second end of the three cables. When the measuring system is lowered, it uses its own gravity to make the measuring system fall vertically to the bottom of the casting slot, ensuring that the system can accurately measure the distance from the bottom of the slot to the concrete surface.

[0034] like Figure 6As shown, before pouring concrete, the measurement system is lowered into the casting slot, with the counterweight structure 6 touching the bottom of the slot. At this point, all system components are ready. As concrete is poured, the concrete surface gradually rises. Starting from the end near the counterweight structure 6, the aggregate in the concrete gradually compresses the outer shell 11 of the blasting resistor 1. When the outer shell 11 breaks, the blasting resistor 1 shorts, causing the resistance of the depth sensing resistor 22 connected in parallel to it to increase. This resistance change is transmitted to the display structure 3. The display structure 3 calculates the resistance value based on the number of shorted blasting resistors 1, the known spacing of the depth sensing resistors 22, the resistance of the calibration resistor wire 5, and the resistance between the positive electrode 31 and the calibration contact 33. For example, the linear distance between the concrete surface and the bottom of the casting slot is first calculated based on the number of blasting resistors 1 and the spacing of the depth sensing resistors 22. The length of the calibration resistor wire 5 is then calculated based on the relevant resistance value of the calibration resistor wire 5. The difference between the two values represents the real-time concrete surface depth, which is then displayed on the display module 34, enabling real-time monitoring of the concrete surface depth. This measurement method accurately identifies concrete based on its physical properties, effectively avoiding misjudgment caused by the similar touch of viscous mud and concrete in traditional manual hammer measurement, greatly improving the accuracy of measurement results.

[0035] Here, the concrete surface depth refers to the straight-line distance between the notch of the casting slot and the concrete surface. The signal feedback cable 2, main connecting wire 4, calibration resistor wire 5, and display structure 3 can be transported and stored separately. The signal feedback cable 2, main connecting wire 4, and calibration resistor wire 5 can be encapsulated with simple plastic film and packaged and transported in a disc.

[0036] Furthermore, the interior of the housing 11 is hollow and has an opening; like Figure 3 As shown, the blasting resistor 1 also includes: A sealing cover 14 is connected to the edge of the opening of the housing 11. A closed cavity is formed between the sealing cover 14 and the housing 11. The closed cavity is filled with a filling liquid 15. The thin film resistor 12 is arranged on the surface of the housing 11 ; the thin film resistor 12 is connected to two pins 13 , and the pins 13 are used to be electrically connected to the signal feedback line 2 .

[0037] It should be noted that the housing 11 is hollow and has an opening, which is used to connect to the sealing cover 14 to form a closed cavity. At the same time, brittle materials (such as glass or ceramic) are easily broken when squeezed by concrete aggregate, thereby changing the electrical state of the blasting resistor.

[0038] Sealing cap 14 is connected to the edge of the opening of outer shell 11. Together, they form a closed cavity. This cavity is filled with liquid 15, which acts as a pressure balancer. When blasting resistor 1 is exposed to mud or other liquid environments, liquid 15 balances the pressure inside and outside outer shell 11, preventing rupture due to pressure differentials. However, when blasting resistor 1 comes into contact with concrete, the aggregate in the concrete exerts a localized compressive force on outer shell 11. This compressive force disrupts the pressure balance originally maintained by the liquid, causing the outer shell 11 to break, thereby triggering a change in the state of blasting resistor 1.

[0039] Filling liquid 15 fills the enclosed cavity. Besides balancing pressure, it also provides protection and stability for thin-film resistor 12. Under normal conditions, this ensures stable operation of thin-film resistor 12. Even if housing 11 breaks, this does not affect the electrical performance of thin-film resistor 12, ensuring accurate transmission of resistance change signals. Filling liquid 15 can be, for example, silicone oil or glycerin.

[0040] Thin-film resistor 12, mounted on the surface of housing 11, is a key component in achieving the electrical function of blasting resistor 1. The two pins 13 connected to thin-film resistor 12 are electrically connected to signal feedback line 2. When housing 11 is intact, thin-film resistor 12 and depth-sensing resistor 22 are connected in parallel, jointly affecting the resistance value in the circuit. Once housing 11 is ruptured by concrete aggregate, thin-film resistor 12 becomes short-circuited, and the resistance of depth-sensing resistor 22 connected in parallel increases. Signal feedback line 2 transmits this resistance change signal to display structure 3, which is used to calculate the depth of the concrete surface. Here, thin-film resistor 12 can be electroplated on the surface of housing 11.

[0041] Furthermore, if Figure 4 As shown, the display structure 3 includes: A display module 34, a calculation module 35, and a processing module 36 are communicatively connected. The calculation module 35 has a positive electrode 31, a measuring contact 32, and a calibration contact 33. The calculation module 35 is used to count the number of blasting resistors 1 that form a short circuit. The processing module 36 is used to determine the real-time concrete surface depth based on the number of blasting resistors 1 that form a short circuit, the spacing of the depth sensing resistors 22, the resistance value of the calibration resistance wire 5, and the resistance value between the positive electrode 31 and the calibration contact 33. The display module 34 is used to display the real-time concrete surface depth.

[0042] It should be noted that the calculation module 35 has a positive electrode 31, a measurement contact 32, and a calibration contact 33, which serve as key interfaces for electrical connection with other components in the system. The positive electrode 31 is connected to the main connecting wire 4, providing power to the calculation module 35. The measurement contact 32 is connected to the signal feedback line 2, receiving the resistance change signal from the depth sensing resistor 22 to obtain data related to the status of the blasting resistor 1. The calibration contact 33 is connected to the calibration resistor line 5 and is used to measure the resistance value of the calibration resistor line 5, thereby determining information such as the total length of the system cable installation. The calculation module 35 is used to count the number of blasting resistors 1 that have formed an open circuit. Specifically, based on the parallel circuit characteristics of the blasting resistor 1 and the depth sensing resistor 22, the resistance change signal is collected through the measurement contact 32 and counted by the calculation module 35. The processing module 36 is used to determine the real-time depth of the concrete surface based on the number of blasting resistors 1 that form a short circuit, the spacing of the depth sensing resistors 22, the resistance value of the calibration resistance wire 5, and the resistance value between the positive electrode 31 and the calibration contact 33. Specifically, the straight-line distance between the concrete surface and the bottom of the casting slot is first calculated based on the number of blasting resistors 1 that form a short circuit and the spacing of the depth sensing resistors 22. Then, the laying length of the calibration resistance wire 5 is calculated based on the resistance value of the calibration resistance wire 5 and the resistance value between the positive electrode 31 and the calibration contact 33. Finally, the difference between the two is calculated to obtain the real-time depth of the concrete surface.

[0043] The display module 34 is used to display the real-time concrete surface depth results obtained by the processing module 36. For example, the specific depth value can be directly displayed on a digital display screen, or the changing state of an indicator light can be used to reflect the changing trend of the concrete surface depth. This allows construction personnel to obtain concrete surface depth information intuitively and conveniently, and to promptly monitor the progress of the anti-seepage wall pouring construction, so that they can make appropriate construction decisions and ensure smooth construction.

[0044] Furthermore, if Figure 6 As shown, the signal feedback line 2 also includes: A feedback cable 21 is provided with a plurality of depth sensing resistors 22 at equal intervals.

[0045] It should be noted that feedback cable 21 is a crucial component of signal feedback line 2 and plays a key role in signal transmission within the entire measurement system. As a carrier, it connects depth-sensing resistor 22 to other components of the system (such as display structure 3). This allows the resistance change signal generated by depth-sensing resistor 22 due to changes in the state of blasting resistor 1 to be smoothly transmitted to display structure 3 for processing and analysis, thereby enabling the measurement and display of concrete surface depth.

[0046] Multiple depth-sensing resistors 22 are arranged at equal intervals on the feedback cable 21. This evenly spaced arrangement is key to accurately measuring the depth of the concrete surface. When the system is operating, each depth-sensing resistor 22 is connected in parallel with a blasting resistor 1. When aggregate in the concrete compresses a blasting resistor 1, causing its outer shell to break and create a short circuit, the resistance value of the corresponding depth-sensing resistor 22 increases. Because the depth-sensing resistors 22 are evenly spaced, the display structure 3 can calculate the height of the concrete surface rise by recording the number of blasting resistors 1 that create a short circuit, combined with the spacing between the depth-sensing resistors 22, and thus determine the real-time depth of the concrete surface. For example, if the spacing between two adjacent depth-sensing resistors 22 is 0.25m, when three blasting resistors 1 create a short circuit, it can be determined that the concrete surface has risen by 0.25×3=0.75m.

[0047] The design of the feedback cable 21 and the equally spaced depth sensing resistors 22 in the signal feedback line 2 constructs a stable and efficient signal feedback mechanism, which can accurately transmit the resistance change signal caused by the rise of the concrete surface to the display structure 3, providing reliable data support for the system to accurately measure the depth of the concrete surface. It is an important basis for the normal operation of the entire concrete surface depth measurement system for the anti-seepage wall pouring construction.

[0048] Furthermore, the distance between two adjacent depth sensing resistors 22 is 0.25 m, and the size of the blasting resistor 1 is 1.5 times the size of the aggregate in the concrete.

[0049] It should be noted that the spacing between two adjacent depth-sensing resistors 22 is set to 0.25m. This spacing was determined based on a comprehensive consideration of multiple factors. From the perspective of measurement accuracy, the smaller the spacing, the denser the resistance change signals captured by the display structure 3 as the blasting resistors 1 are squeezed and disconnected one by one during the concrete surface rise, resulting in higher-precision measurement of the concrete surface depth. This is similar to how higher resolution LCD displays provide clearer images. However, too small a spacing can increase system cost and wiring difficulty. During the construction of anti-seepage walls, according to industry standards and actual construction experience, the construction method requires the concrete surface to fluctuate in height (the height difference should be controlled within 0.5 meters). A spacing of 0.25m meets measurement accuracy requirements, ensuring measurement accuracy while balancing system cost and construction convenience. As the concrete surface rises, each time a blasting resistor 1 is squeezed and disconnected, the corresponding depth-sensing resistor 22 changes in resistance. By recording the number of resistance changes and multiplying them by the 0.25m spacing, the concrete surface's height rise can be accurately calculated, thereby determining the real-time concrete surface depth.

[0050] The size of the blasting resistor 1 is set to 1.5 times the size of the aggregate in the concrete to ensure reliable operation in the concrete environment. Concrete aggregates are irregular in shape and size. If the blasting resistor 1 is too small, it may not effectively contact the aggregate, resulting in failure to be crushed in time during the rising concrete surface, causing measurement errors. If it is too large, it will not only increase costs but also affect its stability in the slurry or liquid and its uniform distribution within the concrete. Setting it to 1.5 times the size of the aggregate ensures that the blasting resistor 1 makes maximum contact with the aggregate in the concrete and breaks when crushed by the aggregate, thus fulfilling its measurement function. For example, when the blasting resistor 1 is lowered into the concrete trough with the measurement system, as the concrete rises, the aggregate in the concrete can smoothly press against the blasting resistor 1, shattering its outer shell 11 and disconnecting the thin-film resistor 12. This changes the resistance value of the depth-sensing resistor 22 connected in parallel with it, allowing the system to accurately detect changes in the position of the concrete surface. Here, the size of the blasting resistor 1 and the size of the aggregate refer to the volume of the component.

[0051] like Figure 7 As shown, the present application provides a method for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall, which is based on the above-mentioned system for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall. The method includes the following steps: S100 , welding the second ends of the signal feedback line 2 , the main connecting wire 4 , and the calibration resistance line 5 together, and then connecting them to the counterweight structure 6 .

[0052] S200. Place the connected counterweight structure 6 into the slot to be cast, so that the signal feedback line 2, the main connecting wire 4 and the calibration resistance wire 5 extend vertically to the bottom of the slot to be cast, and when the counterweight structure 6 touches the bottom of the slot to be cast, reserve the target length of the signal feedback line 2, the main connecting wire 4 and the calibration resistance wire 5 at the top of the slot and fix them.

[0053] S300 , connecting the measuring contact 32 , the positive electrode 31 , and the calibration contact 33 on the display structure 3 to the signal feedback line 2 , the main connecting wire 4 , and the calibration resistance line 5 , respectively.

[0054] S400. When pouring concrete, as the concrete surface rises, the concrete squeezes the blasting resistor 1, causing it to form a short circuit. The display structure 3 determines and displays the real-time concrete surface depth based on the number of blasting resistors 1 that form short circuits, the spacing between the depth sensing resistors 22, the resistance value of the calibration resistance wire 5, and the resistance value between the positive electrode 31 and the calibration contact 33.

[0055] It's important to note that the second ends of the signal feedback line 2, main connecting wire 4, and calibration resistor wire 5 are welded together to ensure smooth current flow between these lines and coordinated operation of all components. After welding, they are connected to the counterweight structure 6, which provides sufficient gravity for the entire measurement system, allowing it to fall vertically when placed into the casting slot, ensuring measurement accuracy.

[0056] Place the connected counterweight structure 6 into the slot to be cast, with the aim of allowing the signal feedback line 2, the main connecting wire 4 and the calibration resistance wire 5 to extend vertically to the bottom of the casting slot along with the counterweight structure 6. When the counterweight structure 6 touches the bottom of the casting slot, it indicates that the measurement system has reached the specified position. At this time, the target length of the signal feedback line 2, the main connecting wire 4 and the calibration resistance wire 5 are reserved at the top of the casting slot and fixed. The target length of the cable is reserved to facilitate the subsequent connection with the display structure 3, and to prevent the cable from being damaged by accidental pulling during the construction process; fixing the cable ensures that the system is in a stable position during the measurement process to avoid the measurement results being affected by the shaking of the cable. The target length can be set according to actual needs.

[0057] The measurement contact 32, positive electrode 31, and calibration contact 33 on the display structure 3 are connected to the signal feedback line 2, the main connecting wire 4, and the calibration resistor line 5, respectively, allowing the display structure 3 to obtain relevant signals and data from the signal feedback line 2, the main connecting wire 4, and the calibration resistor line 5. The measurement contact 32 is connected to the signal feedback line 2 to receive the resistance change signal from the depth sensing resistor 22; the positive electrode 31 is connected to the main connecting wire 4 to provide power to the display structure 3; and the calibration contact 33 is connected to the calibration resistor line 5 to obtain the resistance value of the calibration resistor line 5. This data is an important basis for the subsequent calculation of the concrete surface depth.

[0058] During concrete pouring, as the concrete surface rises, the aggregate in the concrete will squeeze the blasting resistors 1 one by one. Because the blasting resistors 1 have breakable outer shells 11, this squeeze creates a short circuit, which in turn increases the resistance of the depth sensing resistor 22 connected in parallel with them. The display structure 3 collects data in real time: the number of blasting resistors 1 that have short circuits, the spacing between adjacent depth sensing resistors 22, the resistance of the calibration resistor wire 5, and the resistance between the positive electrode 31 and the calibration contact 33. The calculation module 35 within the display structure 3 performs calculations based on this data. For example, the linear distance between the concrete surface and the bottom of the pouring slot can be calculated based on the number of short circuits and the spacing between the depth sensing resistors 22. The length of the calibration resistor wire 5 can then be calculated based on the relevant resistance value of the calibration resistor wire 5. Subtracting these two values yields the real-time concrete surface depth. Finally, the display module of the display structure 3 displays the real-time concrete surface depth, allowing construction personnel to keep abreast of the concrete pouring progress.

[0059] Furthermore, the method further comprises the following steps: When the display structure 3 detects that the number of blasting resistors 1 that form a short circuit has not changed within a preset time period, an alarm message is issued; the alarm message is used to prompt a pouring abnormality.

[0060] It should be noted that the display structure 3 continuously records the changes in the number of blasting resistors 1 that have broken circuits throughout the measurement process. During normal cutoff wall construction, as concrete is poured, the concrete surface continues to rise, squeezing the blasting resistors 1 and causing them to break one by one. Therefore, the number of blasting resistors 1 breaking circuits gradually increases. The display structure 3 monitors the number of blasting resistors 1 breaking circuits within a preset time period. This preset time period can be set according to actual needs.

[0061] When the display structure 3 detects that the number of blasting resistors 1 that form a short circuit has not changed within a preset time period, the alarm triggering condition is met, indicating that during this period, the concrete surface may not have risen, or the rise is extremely slow and almost negligible, which is inconsistent with the normal pouring construction situation, and is therefore judged to be a pouring abnormality.

[0062] When an alarm is triggered, Display Structure 3 will issue an alert message, alerting construction personnel to an abnormality during the pouring process. For example, insufficient concrete supply, a clogged conduit, or a malfunction in the pouring equipment could be preventing the concrete from rising properly. Upon receiving the alert, construction personnel can promptly inspect the pouring site, quickly identify the problem, and implement appropriate remedial measures. This prevents project quality issues caused by pouring anomalies, such as discontinuous pouring and voids in the cutoff wall, thereby ensuring the quality and progress of the cutoff wall pouring.

[0063] Furthermore, the display structure 3 determines and displays the real-time concrete surface depth based on the number of blasting resistors 1 forming a short circuit, the spacing of the depth sensing resistors 22, the resistance value of the calibration resistance wire 5, and the resistance value between the positive electrode 31 and the calibration contact 33. Specifically, the following steps are included: The linear distance between the concrete surface and the bottom of the casting slot is calculated based on the number of blasting resistors 1 forming the circuit break and the spacing between the depth sensing resistors 22; The laying length of the calibration resistance wire 5 is calculated based on the resistance value of the calibration resistance wire 5 and the resistance value between the positive electrode 31 and the calibration contact 33; The difference between the laying length of the calibration resistance wire 5 and the straight-line distance between the concrete surface and the bottom of the casting slot is calculated to obtain the real-time concrete surface depth and display it on the display structure 3.

[0064] It should be noted that during the pouring of the anti-seepage wall, the blasting resistors 1 and depth-sensing resistors 22 are connected in parallel, one after another, and the depth-sensing resistors 22 are evenly spaced along the signal feedback line 2. As the concrete surface rises, starting near the counterweight structure 6, the aggregate in the concrete compresses the blasting resistors 1 one by one, shattering their outer shells 11 and creating short circuits. This causes the resistance of the depth-sensing resistors 22 to increase accordingly. Display structure 3 records the number of blasting resistors 1 that have formed short circuits. Since the spacing of the depth-sensing resistors 22 is known, the linear distance between the concrete surface and the bottom of the casting slot can be calculated by a simple multiplication operation: multiplying the number of blasting resistors 1 that have formed short circuits by the spacing of the depth-sensing resistors 22. For example, if the spacing between two adjacent depth-sensing resistors 22 is 0.25m, and five blasting resistors 1 form short circuits, then the linear distance between the concrete surface and the bottom of the casting slot is 0.25 × 5 = 1.25m. This step is based on the system's monitoring of the resistance change caused by concrete extrusion blasting resistance, and converting the resistance change into an actual distance value. It is one of the key steps in determining the depth of the concrete surface.

[0065] The calibration resistance wire 5 is a cable with uniformly distributed resistance, and its resistance value is a (Ω / m). The processing module 36 of the display structure 3 measures the resistance value b (Ω) between the positive electrode 31 and the calibration contact 33. According to the formula "length = resistance value ÷ resistance value per unit length", the laying length of the calibration resistance wire 5 is b ÷ a (m). This calculation takes advantage of the uniform resistance distribution of the calibration resistance wire 5, indirectly obtaining its laying length by measuring its resistance value. Because one end of the calibration resistance wire 5 is connected to the calibration contact 33 of the display structure 3 and the other end is connected to the counterweight structure 6, its laying length reflects the distance from the display structure 3 to the counterweight structure 6. The counterweight structure 6 contacts the bottom of the casting slot. This length information is crucial for the subsequent accurate calculation of the concrete surface depth.

[0066] Specifically, the ends of the main connecting wire 4, signal feedback wire 2, and calibration resistor wire 5 are all connected to the counterweight structure 6, forming a three-terminal parallel connection to ground, equivalent to three branches connected in parallel to the two ends of the power supply of the display structure 3. The resistance value b between the positive electrode 31 and the calibration contact 33 corresponds only to the resistance value of the calibration resistor wire 5. Because the calibration resistor wire 5 is independently connected between 33 and the counterweight structure 6, it is parallel to the signal feedback wire 2 and the main connecting wire 4 branch without current crossover. Therefore, its resistance value can be directly calculated using Ohm's law: that is, the resistance value b measured between the positive electrode 31 and the calibration contact 33 is equal to the product of the resistance per unit length of the calibration resistor wire 5 and its installation length. Changes in the resistance of the signal feedback wire 2 only affect the current flowing through the measurement contact 32 and do not interfere with the calibration resistor wire branch. Therefore, the resistance values of both can be calculated independently.

[0067] The resistance change in signal feedback line 2 is caused by the blasting resistor breaking and has nothing to do with calibration resistor line 5. Once the system is lowered to the bottom of the slot, calibration resistor line 5 is laid for a fixed length, from the top of the slot to the bottom. Therefore, the resistance value b mentioned above does not change after installation.

[0068] After determining the linear distance between the concrete surface and the bottom of the casting slot and the length of the calibration resistance wire 5, the calculation module 35 of the display structure 3 calculates the difference between the two values to obtain the real-time concrete surface depth. This is because the length of the calibration resistance wire 5 represents the distance from the display structure 3 to the bottom of the slot, while the linear distance between the concrete surface and the bottom of the casting slot is the distance from the concrete surface to the bottom of the slot. The difference between the two values is the distance from the location of the display structure 3 (generally near the top of the slot) to the concrete surface, which is the real-time concrete surface depth. Finally, the display module 34 of the display structure 3 displays the calculated real-time concrete surface depth in an intuitive manner, such as by displaying a specific value on a display screen or by indicating the depth through changes in the status of an indicator light. This allows construction personnel to easily check and monitor the concrete pouring progress, ensuring smooth construction of the anti-seepage wall.

[0069] Furthermore, the method further comprises the following steps: Real-time monitoring of the resistance value change caused by the open circuit of the blasting resistor 1. When a change in the resistance value is detected and the change in the resistance value meets the false triggering condition, it is determined that the current resistance value change has the possibility of false triggering. The false triggering condition is that the amplitude of the resistance value change caused by the open circuit of the blasting resistor 1 exceeds the preset amplitude range, or the number of resistance value changes caused by the open circuit of the blasting resistor 1 per unit time exceeds the preset allowable number; Obtaining a historical data collection set of the display structure 3; the historical data collection set at least includes the resistance value between the positive electrode 31 and the calibration contact 33 collected each time and the timestamp corresponding to the resistance value; Based on the historical data collection set, the continuity and regularity of the resistance value change are analyzed; if the regularity of the resistance value change shows a sudden change or abnormal fluctuation that does not conform to the concrete surface rising, the current resistance value change is determined to be a false trigger, and the resistance data corresponding to the current resistance value change is deleted in the display structure 3.

[0070] It should be noted that the system monitors in real time the resistance change of depth sensing resistor 22 caused by a short circuit in blasting resistor 1. When a resistance change is detected, it immediately determines whether the change meets the false triggering condition. The false triggering condition is defined in two aspects: First, the magnitude of the resistance change caused by the short circuit in blasting resistor 1 exceeds a preset range. Under normal circumstances, when concrete compresses blasting resistor 1, causing it to short circuit, the resistance change is within a reasonable range. If the change is too large, it may not be due to normal concrete compression, but rather due to external interference causing abnormal resistance changes. Second, the number of resistance changes caused by the short circuit in blasting resistor 1 per unit time exceeds the preset allowable number. Because the concrete surface rises at a relatively stable rate during a normal pouring process, the frequency of the short circuit in blasting resistor 1 should also be within a certain range. If the resistance change is too frequent per unit time, a false triggering condition may exist. If the resistance change meets any of these conditions, the current resistance change is determined to have the potential for false triggering.

[0071] To further determine whether it's a false trigger, the system retrieves a historical data set from display structure 3. This data set includes at least the resistance value between positive electrode 31 and calibration contact 33 for each acquisition, along with the corresponding timestamp. Changes in the resistance between positive electrode 31 and calibration contact 33 reflect the system's operating status, while the timestamp records the chronological order of these data acquisitions. By collecting and analyzing this historical data, we can understand the system's resistance changes at different points in time, providing a reference for determining whether the current resistance change is normal.

[0072] Based on the acquired historical data collection set, the system analyzes the continuity and regularity of changes in resistance values. During a normal concrete pouring process, as the concrete surface rises, blasting resistor 1 is squeezed and disconnected one by one. The change in resistance value should be continuous and regular, matching the speed and process of the concrete surface rising. If the pattern of resistance value change shows a sudden change or abnormal fluctuation that does not conform to the rise of the concrete surface, such as a sudden and significant change in resistance value, and this change is completely different from the previous historical data pattern and does not conform to the logic of the normal rise of the concrete surface, then the current resistance value change can be determined to be a false trigger. Once it is determined to be a false trigger, the system will delete the resistance data corresponding to the current resistance value change in display structure 3. This is because the data generated by the false trigger is erroneous. If it is not deleted, it will affect the accurate calculation and display of the real-time concrete surface depth by display structure 3, resulting in deviations in the measurement results and affecting the construction personnel's judgment of the pouring situation.

[0073] The principle of judging the possibility of false triggering is based on monitoring and analyzing the change in resistance value when the blasting resistor 1 is short-circuited. By setting reasonable judgment criteria and combining the normal range of resistance value change when the concrete surface rises during actual construction, possible abnormal situations can be identified to ensure the accuracy of the measurement data.

[0074] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall, characterized in that: include: A signal feedback line (2), a main connecting wire (4) and a calibration resistance line (5) are used in conjunction with each other, wherein the first end of the signal feedback line (2) is electrically connected to the measuring contact (32) of the display structure (3), the first end of the main connecting wire (4) is electrically connected to the positive electrode (31) of the display structure (3), and the first end of the calibration resistance line (5) is electrically connected to the calibration contact (33) of the display structure (3); the second end of the signal feedback line (2), the second end of the main connecting wire (4) and the second end of the calibration resistance line (5) are electrically connected, and the second ends of the three are all connected to the counterweight structure (6); the signal feedback line (2) has a plurality of depth sensing resistors (22) arranged at equal intervals; the display structure (3) is used to display the depth of the concrete surface in the casting slot hole in real time; Blasting resistors (1), the number of the blasting resistors (1) is equal to the number of the depth sensing resistors (22), and the blasting resistors (1) and the depth sensing resistors (22) are connected in parallel one by one; the blasting resistors (1) have a breakable shell (11); The measurement system is lowered into the casting slot hole so that the counterweight structure (6) touches the bottom of the casting slot hole and then concrete can be cast; during casting, the concrete surface rises, and the concrete squeezes the shell (11) of the blasting resistor (1) one by one from the end close to the counterweight structure (6) to the end away from the counterweight structure (6), so that the blasting resistor (1) forms a short circuit, and the resistance value of the corresponding depth sensing resistor (22) increases. The display structure (3) determines the real-time concrete surface depth and displays it according to the number of blasting resistors (1) that form a short circuit, the spacing of the depth sensing resistors (22), the resistance value of the calibration resistance line (5), and the resistance value between the positive electrode (31) and the calibration contact (33).

2. A system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 1, characterized in that: The shell (11) is hollow inside and has an opening; The blasting resistor (1) further comprises: A sealing cover (14), the sealing cover (14) being connected to an edge of the opening of the housing (11), a closed cavity being formed between the sealing cover (14) and the housing (11), and a filling liquid (15) being filled in the closed cavity; A thin film resistor (12), the thin film resistor (12) being arranged on the surface of the housing (11); the thin film resistor (12) being connected to two pins (13), the pins (13) being used for being electrically connected to the signal feedback line (2).

3. A system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 1 or 2, characterized in that: The shell (11) is made of glass or ceramic.

4. A system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 1, characterized in that: The display structure (3) includes: A display module (34), a calculation module (35), and a processing module (36) are communicatively connected, wherein the calculation module (35) has the positive electrode (31), the measuring contact (32), and the calibration contact (33); the calculation module (35) is used to count the number of blasting resistors (1) that form a short circuit; and the processing module (36) is used to determine the real-time concrete surface depth based on the number of blasting resistors (1) that form a short circuit, the spacing of the depth sensing resistors (22), the resistance value of the calibration resistance line (5), and the resistance value between the positive electrode (31) and the calibration contact (33); The display module (34) is used to display the real-time concrete surface depth.

5. A system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 1, characterized in that: The signal feedback line (2) further includes: A feedback cable (21), wherein a plurality of depth sensing resistors (22) are arranged at equal intervals on the feedback cable (21).

6. A system for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 1, characterized in that: The distance between two adjacent depth sensing resistors (22) is 0.25 m, and the size of the blasting resistor (1) is 1.5 times the size of the aggregate in the concrete.

7. A method for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall, implemented based on a system for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: Welding the second ends of the signal feedback line (2), the main connecting wire (4) and the calibration resistance line (5) together, and then connecting them to the counterweight structure (6); The connected counterweight structure (6) is placed in the slot to be cast, so that the signal feedback line (2), the main connecting wire (4) and the calibration resistance line (5) extend vertically to the bottom of the slot to be cast, and when the counterweight structure (6) touches the bottom of the slot to be cast, the target length of the signal feedback line (2), the main connecting wire (4) and the calibration resistance line (5) are reserved at the top of the slot and fixed; The measuring contact (32), the positive electrode (31), and the calibration contact (33) on the display structure (3) are respectively connected to the signal feedback line (2), the main connecting wire (4), and the calibration resistance line (5); When pouring concrete, as the concrete surface rises, the concrete squeezes the blasting resistor (1), causing it to form a short circuit. The display structure (3) determines and displays the real-time concrete surface depth based on the number of blasting resistors (1) that form short circuits, the spacing of the depth sensing resistors (22), the resistance value of the calibration resistance wire (5), and the resistance value between the positive electrode (31) and the calibration contact (33).

8. A method for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 7, characterized in that: The following steps are also included: When the display structure (3) detects that the number of blasting resistors (1) that form a short circuit has not changed within a preset time period, an alarm message is issued; the alarm message is used to indicate a pouring abnormality.

9. A method for measuring the depth of concrete surface during pouring construction of an anti-seepage wall according to claim 7, characterized in that: The display structure (3) determines and displays the real-time concrete surface depth based on the number of blasting resistors (1) forming a short circuit, the spacing of the depth sensing resistors (22), the resistance value of the calibration resistance line (5), and the resistance value between the positive electrode (31) and the calibration contact (33), specifically comprising the following steps: The straight-line distance between the concrete surface and the bottom of the casting slot is calculated based on the number of blasting resistors (1) forming the short circuit and the spacing of the depth sensing resistors (22); Calculate the laying length of the calibration resistance wire (5) based on the resistance value of the calibration resistance wire (5) and the resistance value between the positive electrode (31) and the calibration contact (33); The difference between the laying length of the calibration resistance line (5) and the straight-line distance between the concrete surface and the bottom of the casting slot hole is calculated to obtain the real-time concrete surface depth and display it on the display structure (3).

10. A method for measuring the depth of a concrete surface during pouring construction of an anti-seepage wall according to claim 7, characterized in that: The following steps are also included: Real-time monitoring of the resistance value change caused by the blasting resistor (1) forming a short circuit, when the resistance value change is detected and the change in the resistance value meets the false triggering condition, it is determined that the current resistance value change has the possibility of false triggering; the false triggering condition is that the resistance value change amplitude caused by the blasting resistor (1) forming a short circuit exceeds the preset amplitude range, or the number of resistance value changes caused by the blasting resistor (1) forming a short circuit within a unit time is greater than the preset allowable number; Acquiring a historical data collection set of the display structure (3); the historical data collection set at least includes the resistance value between the positive electrode (31) and the calibration contact (33) collected each time and a timestamp corresponding to the resistance value; Based on the historical data collection set, the continuity and regularity of the resistance value change are analyzed; if the regularity of the resistance value change shows a sudden change or abnormal fluctuation that does not conform to the concrete surface rising, the current resistance value change is determined to be a false trigger, and the resistance data corresponding to the current resistance value change is deleted in the display structure (3).

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