An anti-leakage device with monitoring function

Abstract

The utility model belongs to geomembrane leakage monitoring technical field, specifically discloses a kind of anti-seepage device with monitoring function, comprising: anti-seepage membrane, sensing cable and monitoring unit;The anti-seepage membrane is located at working ground, it includes at least two layers of mutually laminated arrangement electrically insulating geomembrane, and multiple geomembrane is equipped with sealing joint in edge overlapping area;Several sensing cables are parallel, evenly distributed and mutually contactless and are located on the upper end and bottom end of geomembrane;The sensing cable is integrally arranged, and its two ends are exposed from the joint of one side of the anti-seepage membrane and are close to the joint of the opposite side of the anti-seepage membrane, and bare wire section is discontinuously arranged along the area of the anti-seepage membrane;The monitoring unit is electrically connected with the two ends of each sensing cable respectively, it supplies constant voltage to each sensing cable and obtains current value on the sensing cable in real time;Leakage problem is effectively detected, leakage position is positioned and leakage range is circled by the current change of multiple sensing cables.

Description

Technical Field

[0001] This utility model belongs to the field of geomembrane leakage monitoring technology, and more specifically, relates to a leakage prevention device with monitoring function. Background Technology

[0002] With rapid socio-economic development and increasing environmental awareness, geomembranes, as an important environmentally friendly material, have been widely used in landfills, sewage treatment plants, tailings ponds, tunnels, and other applications. The main function of geomembranes is to prevent pollutants from seeping into the soil and groundwater through the surface or underground, thereby protecting the environment and ecosystems; or to prevent water from seeping into tunnels from the surrounding rock, thus affecting the safe construction and operation of the tunnels. However, geomembrane products currently on the domestic market generally have a significant drawback: they only possess the basic function of preventing leakage, lacking the ability to monitor leakage in real time.

[0003] In practical applications, the laying and use environments of geomembranes are often quite complex, especially in scenarios such as landfills, tailings ponds, and water-rich tunnels. Due to factors such as uneven foundation settlement, human-caused damage during construction, material aging, or external force damage, geomembranes may be damaged or leak. Once leakage occurs, pollutants or groundwater may spread through the damaged points, causing serious pollution to the surrounding environment and groundwater. Therefore, timely detection and location of leakage points is a crucial aspect of geomembrane application.

[0004] However, existing geomembrane products on the market lack monitoring functions and usually require other technical means or equipment for leakage detection. For example, leakage can be monitored by manual inspection, using leakage detectors, and deploying monitoring wells or sensors. Although these methods can achieve leakage detection to a certain extent, they have the following problems: (1) To achieve leakage monitoring, manual inspection requires a lot of human resources, especially in the scenario of large-area geomembrane laying, the workload is huge and the efficiency is low; (2) Traditional leakage detection methods rely on sensors, but the density and location of the sensors will affect the monitoring effect and it is difficult to achieve full coverage; (3) Even if leakage is detected by traditional methods, it is difficult to quickly and accurately locate the leakage point, which will lead to delays in repair work, further expand the pollution range, and increase the difficulty and cost of treatment. Therefore, it is urgent to develop a new type of anti-seepage device that integrates anti-seepage and monitoring functions. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a seepage prevention device with monitoring capabilities. By installing multiple layers of sensing cables at the top and bottom of the multi-layered geomembrane, and utilizing a monitoring unit to monitor the current values ​​of these sensing cables in real time, the device effectively detects seepage problems, locates seepage points, and delineates the seepage range by combining the current changes of the multiple sensing cables with Ohm's law. This allows for timely remedial measures, protecting groundwater resources and the soil environment from pollution. Furthermore, the design and specific arrangement of the sensing cables not only ensure comprehensive and accurate monitoring but also make the overall device structure more rational and compact, facilitating installation and maintenance. In addition, compared to traditional geomembranes, this seepage prevention device significantly reduces labor costs and resource consumption, eliminating the need for extensive manual inspections and complex auxiliary monitoring equipment, thus improving the efficiency and convenience of project management. Simultaneously, accurate seepage point location reduces secondary damage to the geomembrane during maintenance, extending its service life and ensuring the long-term stable operation of the project, resulting in significant economic and environmental benefits.

[0006] To achieve the above objectives, this utility model provides a leak-proof device with monitoring function, comprising: a leak-proof membrane, a sensing cable, and a monitoring unit, wherein:

[0007] The impermeable membrane is placed on the working ground and includes at least two layers of electrically insulating geomembranes stacked on top of each other, and the multiple geomembranes have sealed joints in the overlapping areas at their edges.

[0008] Several of the aforementioned sensing cables are arranged in parallel, uniformly distributed, and without contact with each other at the upper and lower ends of the geomembrane; the sensing cables are arranged in a U-shape, with both ends exposed from the seam on one side of the geomembrane and the U-shaped bends close to the seam on the opposite side of the geomembrane, and bare wire segments are intermittently provided along the geomembrane area.

[0009] The monitoring unit is electrically connected to both ends of each of the sensing cables, and supplies constant voltage power to each sensing cable and obtains the current value on the sensing cable in real time.

[0010] Furthermore, the geomembrane is mainly made of high-density polyethylene.

[0011] Furthermore, the multiple sensing cables located at different levels are aligned vertically with corresponding bare wire segments; simultaneously, the geomembrane is used to seal the two sensing cables at the same level by hot-melt welding.

[0012] Furthermore, the portion of the sensing cable outside the impermeable membrane is covered with an outer insulation layer;

[0013] The non-bare segments of the sensing cable within the geomembrane area are connected to the geomembrane via sealant and / or sealing tape.

[0014] Furthermore, the bare wire segments of the sensing cable within the geomembrane area are 8-10 cm long, and their spacing is 8-10 cm.

[0015] Furthermore, the monitoring unit includes: a power supply module, a current measurement module, a first communication module, a second communication module, a memory module, a data processing module, and an output warning module; the power supply module is electrically connected to the current measurement module and the first communication module, and is also electrically connected to both ends of the sensing cable located outside the geomembrane; the current measurement module is connected to the first communication module, and transmits the current information of the sensing cable to the second communication module connected to the first communication module through the first communication module; the memory module is connected to the second communication module, and stores the historical records of the current information and provides them to the data processing module connected to it for further analysis; the data processing module is also connected to the second communication module and the output warning module.

[0016] Furthermore, the monitoring unit also includes several temperature sensors located at the bottom of the geomembrane. The temperature sensors maintain a communication connection with the first communication module through a wireless communication module, which may include an NB-IoT communication module or a LoRa communication module.

[0017] Furthermore, the temperature sensor is equipped with a timing control module connected to the wireless communication module. The timing control module enables the wireless communication module of the temperature sensor to send temperature data to the first communication module at preset time intervals.

[0018] Furthermore, the temperature sensor contains a lithium battery.

[0019] Furthermore, the power supply module includes an AC power supply or a solar power supply structure;

[0020] The current measurement module includes a Hall current sensor and an analog-to-digital converter connected to the Hall current sensor. The Hall current sensor is model ACS712 and the analog-to-digital converter is model AD7793.

[0021] Both the first communication module and the second communication module include wired and wireless communication modules. The wireless communication module is an NB-IoT communication module or a LoRa communication module, and the wired communication module is a USB interface or an RJ45 interface.

[0022] The memory module includes a mechanical hard drive or a solid-state drive connected via a SATA interface;

[0023] The data processing module includes a PLC or an FPGA;

[0024] The output warning module includes LED lights, a screen, or a speaker.

[0025] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0026] (1) The seepage prevention device of this utility model sets up multiple layers of sensing cables at the top and bottom of the multi-layer geomembrane, and uses the monitoring unit to monitor the current value of the multiple layers of sensing cables in real time. By combining the current change of the multiple layers of sensing cables with Ohm's law, the seepage problem can be effectively detected, the seepage location can be located, and the seepage range can be delineated, so as to take timely repair measures and protect groundwater resources and soil environment from pollution. Secondly, the design and specific arrangement of the sensing cables not only ensure the comprehensiveness and accuracy of monitoring, but also make the structure of the entire device more reasonable and compact, and easy to install and maintain. In addition, compared with traditional geomembranes, the seepage prevention device greatly reduces labor costs and resource consumption, and no longer relies on a large number of manual inspections and complex auxiliary monitoring equipment, improving the efficiency and convenience of project management. At the same time, accurate seepage point location also reduces secondary damage to the geomembrane during maintenance, extends the service life of the geomembrane, and ensures the long-term stable operation of the project, which has significant economic and environmental benefits.

[0027] (2) The anti-seepage device of this utility model keeps the positional relationship between the sensing cable in each layer and the sensing cable in at least one other layer on the vertical projection plane, thereby dividing the anti-seepage membrane into multiple sealed chambers in the horizontal direction in conjunction with hot melt welding. This allows the sensing cables in the same layer to be insulated and isolated without affecting the performance of the sensing cables, thus avoiding the situation where the current data is disordered due to the occurrence of the damage point in two adjacent sensing cables, but the specific location of the damage point is unclear.

[0028] (3) The anti-leakage device of this utility model, by installing a battery in the temperature sensor and communicating with the monitoring unit wirelessly, gets rid of the limitation of wired connection, making the sensor layout more flexible, reducing the construction difficulty, and avoiding the problem of data transmission interruption due to line damage. In addition, the intermittent transmission method can effectively reduce the resource consumption during data transmission, reduce the processing burden of the monitoring unit on a large amount of continuous data, and improve the efficiency and pertinence of data processing. At the same time, the monitoring unit can accurately calculate the actual resistance of the sensing cable based on the temperature data, realize temperature compensation correction, and thus accurately obtain the current value on the sensing cable and the possible leakage point location information.

[0029] (4) The anti-leakage device of this utility model can avoid false alarms and missed alarms by setting up multiple layers of the aforementioned sensing cables, prevent false alarms caused by internal water, and prevent false alarms caused by external water accumulation. Only when the multiple layers of the aforementioned sensing cables within the calculated possible leakage point location range simultaneously detect abnormal current values ​​can the short circuit location be used to locate the leakage range. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the anti-leakage device according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the assembly of the geomembrane and the sensing cable in an embodiment of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the geomembrane when it is damaged according to an embodiment of this utility model;

[0033] Figure 4 This is a cross-sectional view at point A of the present invention;

[0034] Figure 5 This is a schematic diagram of the monitoring unit in an embodiment of the present invention.

[0035] In all the accompanying drawings, the same reference numerals indicate the same technical features, specifically: 1-permeable membrane, 11-geomembrane, 2-sensor cable, 3-monitoring unit, 31-power supply module, 32-current measurement module, 33-first communication module, 34-second communication module, 35-memory module, 36-data processing module, 37-output warning module, 38-temperature sensor. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figures 1 to 5As shown, this utility model embodiment provides a seepage prevention device with monitoring function, including: a geomembrane 1, sensing cables 2, and a monitoring unit 3; the geomembrane 1 is placed on the working ground and includes at least two layers of electrically insulating geomembranes 11 stacked on top of each other, and the multiple geomembranes 11 have sealing seams in the overlapping area at the edges; a number of sensing cables 2 are arranged in parallel, evenly distributed, and without contact with each other at the upper and lower ends of the geomembrane 11; the sensing cables 2 are arranged in a U-shape, with both ends exposed from one side of the seam of the geomembrane 1 and the U-shaped bend close to the seam on the opposite side of the geomembrane 1, and bare wire segments are intermittently provided along the area of ​​the geomembrane 1; the monitoring unit 3 is electrically connected to both ends of each sensing cable 2, and supplies constant voltage power to each sensing cable 2 and obtains the current value on the sensing cable 2 in real time. During use, by installing multiple layers of sensing cables 2 at the top and bottom of the multi-layer geomembrane 11, and using the monitoring unit 3 to monitor the current values ​​of the multiple layers of sensing cables 2 in real time, leakage problems can be effectively detected, seepage points located, and the leakage range delineated by combining the current changes of the multiple layers of sensing cables 2 with Ohm's law, thereby enabling timely remedial measures to protect groundwater resources and the soil environment from pollution. Secondly, the U-shaped design and specific arrangement of the sensing cables 2 not only ensure the comprehensiveness and accuracy of monitoring, but also make the structure of the entire device more reasonable and compact, facilitating installation and maintenance. In addition, compared with traditional geomembranes, this seepage prevention device greatly reduces labor costs and resource consumption, eliminating the need for extensive manual inspections and complex auxiliary monitoring equipment, improving the efficiency and convenience of project management. At the same time, accurate leakage point location also reduces secondary damage to the geomembrane 1 during maintenance, extends the service life of the geomembrane 1, and ensures the long-term stable operation of the project, resulting in significant economic and environmental benefits.

[0038] It should be noted that when the geomembrane 11 has two layers, the multiple sensing cables 2 located at its upper and lower ends are arranged in a three-layer configuration. This arrangement also applies to geomembranes 11 with three or more layers. Furthermore, when the leaking liquid comes into contact with the bare wire segment of the sensing cable 2, the sensing cable 2 will experience a partial short circuit due to the liquid, causing the resistance of the entire sensing cable 2 to decrease and the current in the conductor to increase, i.e., the current value becomes abnormal.

[0039] Furthermore, the geomembrane 11 is mainly made of high-density polyethylene to improve the environmental adaptability of the anti-seepage device.

[0040] Furthermore, the multiple sensing cables 2 located at different levels are vertically aligned with each other, and the bare wire segments are correspondingly positioned. Simultaneously, the geomembrane 1 is sealed between two sensing cables 2 at the same level. Through this design, the sensing cables 2 in each level maintain a consistent positional relationship with at least two other sensing cables 2 in the vertical projection plane. This, combined with hot-melt welding, horizontally divides the geomembrane 1 into multiple sealed chambers. This ensures that the sensing cables 2 located between the geomembranes 11 are insulated without affecting their performance, preventing situations where damage points occur between two adjacent sensing cables 2, leading to current data instability without knowing the exact location of the damage point.

[0041] Preferably, the sealing method is hot-melt welding, which is used to easily achieve good sealing performance of multilayer films, while also giving the seal high strength and improving structural stability.

[0042] Furthermore, the portion of the sensing cable 2 outside the geomembrane 1 is covered with an insulating layer; the bare wire section of the sensing cable 2 within the geomembrane 1 area is 8-10 cm long, and their spacing is 8-10 cm. This design effectively reduces the negative impact of liquid on the bare wire and subsequent maintenance costs after damage, while still allowing for current short-circuiting to locate the breakage point. Simultaneously, it facilitates the connection and fixation of the sensing cable 2 to the adjacent geomembrane 11, thereby preventing short circuits caused by contact between the bare wire sections. Preferably, the non-bare wire sections of the sensing cable 2 within the geomembrane 1 area are connected to the geomembrane 11 using sealant and / or sealing tape.

[0043] Further, the monitoring unit 3 includes: a power supply module 31, a current measurement module 32, a first communication module 33, a second communication module 34, a memory module 35, a data processing module 36, and an output warning module 37; the power supply module 31 is electrically connected to the current measurement module 32 and the first communication module 33, and is also electrically connected to both ends of the sensing cable 2 located outside the geomembrane 1; the current measurement module 32 is connected to the first communication module 33, and transmits the current information of the sensing cable 2 to the second communication module 34 connected to the first communication module 33 through the first communication module 33; the memory module 35 is connected to the second communication module 34, and stores the historical records of the current information and provides them to the data processing module 36 connected to it for further analysis; the data processing module 36 is also connected to the second communication module 34 and the output warning module 37.

[0044] In an optional embodiment, the monitoring unit 3 further includes a plurality of temperature sensors 38 disposed at the bottom end of the geomembrane 1. The temperature sensors 38 maintain a communication connection with the first communication module 33 through a wireless communication module, which includes an NB-IoT (Narrow Band Internet of Things) communication module or a LoRa (Long Range Radio) communication module. The temperature sensor 38 is provided with a timing control module connected to the wireless communication module. The timing control module enables the wireless communication module of the temperature sensor 38 to send temperature data to the first communication module 33 at a preset time interval, the period being 1 day. The temperature sensor 38 is equipped with a lithium battery. Through the above design, the temperature sensor 38 is equipped with a lithium battery and communicates with the monitoring unit 3 wirelessly, eliminating the limitations of wired connections. This makes the sensor placement more flexible, reduces construction difficulty, and avoids data transmission interruptions caused by line damage. Furthermore, the intermittent transmission method effectively reduces resource consumption during data transmission, lowers the processing burden on the monitoring unit 3 for large amounts of continuous data, and improves the efficiency and relevance of data processing. At the same time, the monitoring unit 3 can accurately calculate the actual resistance of the sensing cable 2 based on the temperature data, achieve temperature compensation correction, and thus accurately obtain the current value on the sensing cable 2 and the location information of possible leakage points.

[0045] Specifically, the power supply module 31, the current measurement module 32, and the first communication module 33 can be integrated to form a separate monitoring component, which can be located near the geomembrane 1. The power supply module 31 includes an AC power supply or a solar power supply structure, and is electrically connected to both ends (exposed portions) of the sensing cable 2 via wires to provide a constant voltage to the sensing cable 2. Simultaneously, the power supply module 31 is connected to the current measurement module 32 and the first communication module 33 through internal circuitry to provide them with operating power. The power supply module 31 includes at least one multi-channel voltage regulator module, which outputs a voltage of 5V and / or 3.3V to ensure voltage stability on the multiple sensing cables 2. When the power supply module 31 uses AC power, it further includes a rectifier to convert AC to DC and a filter to smooth the rectified DC to obtain stable DC. When the power supply module 31 uses solar power, it further includes a photovoltaic panel, at least one voltage regulator chip, and a rechargeable lithium battery pack. The current measurement module 32 detects the current information of the sensing cable 2 in real time. It includes a Hall current sensor and an analog-to-digital converter connected to the Hall current sensor. The Hall current sensor is model ACS712, and the analog-to-digital converter is model AD7793, which converts the analog signal of the Hall current sensor into digital information. The first communication module 33 includes wired and wireless communication modules. The wireless communication module is an NB-IoT communication module or a LoRa communication module, and the wired communication module is a USB interface or an RJ45 interface. The first communication module 33 can stably transmit digital signals to the second communication module 34 and add status information including time, sensing cable 2 number, and temperature data of the temperature sensor 38.

[0046] Specifically, the second communication module 34, the memory module 35, the data processing module 36, and the output warning module 37 can be integrated to form a separate management component, which can be located in the monitoring center. The second communication module 34 includes wired and wireless communication modules. The wireless communication module is an NB-IoT communication module or a LoRa communication module, and the wired communication module is a USB interface or an RJ45 interface. The second communication module 34 receives digital signals from the first communication module 33 and further transmits them to the memory module 35 for storage. The memory module 35 includes a mechanical hard drive or a solid-state drive connected via a SATA (Serial Advanced Technology Attachment) interface, which can read and write programs and data, ensuring that historical data is not lost and supporting data backtracking. The data processing module 36 includes a PLC (Programmable Logic Controller) or an FPGA (Field Programmable Gate Array), which has algorithms and can perform logical operations. It can analyze the current information and temperature data in the memory module 35 and transmit the analysis results to the terminal through the second communication module 34. If the current information of the multi-layer sensing cables 2 simultaneously becomes abnormal, the data processing module 36 calculates the location of the leak point by combining it with the temperature data, and sends an alarm signal to the terminal through the second communication module 34. Simultaneously, it instructs the output warning module 37 to issue a warning. The output warning module 37 includes at least a visual or auditory alarm device. Preferably, the data processing module 36 sends information to a mobile APP and / or monitoring center through the second communication module 34; this information includes SMS or HTTP requests. The output warning module 37 includes LED lights, a screen, or a speaker.

[0047] Furthermore, the location where the short circuit occurs in the sensing cable 2 is obtained in the following manner:

[0048]

[0049] In the formula: The distance from the seam at both ends of the sensor cable 2 to the seepage point; I represents the constant voltage value provided by the power supply module 31; I represents the measured value by the current measurement module 32. To obtain the resistivity of the corresponding sensing cable 2 based on the temperature sensor 38; The cross-sectional area of ​​the inner conductor of the sensing cable 2; The length of the sensing cable 2 exposed above the geomembrane 1.

[0050] The working principle of this utility model is as follows: After conducting an electrical test on the formed geomembrane to ensure there are no short circuits or other problems, multiple temperature sensors 38 and the geomembrane 1 are deployed at the work site. The sensing cables 2 are connected to the power supply module 31 and multiple current measurement modules 32 respectively, and the sensing cables 2 at each layer are numbered sequentially to accurately determine the leakage point. When the geomembrane 1 is not damaged and leaking, the current value of each sensing cable 2 remains stable and close. When an abnormal current value occurs, the monitoring unit 3 can comprehensively judge the cause of the abnormal current value by using the corresponding sensing cable 2 number and the calculated possible leakage point location, thereby preventing false alarms caused by internal water and avoiding false alarms caused by external water accumulation. When multiple layers of sensing cables 2 within the calculated possible leakage point location range simultaneously detect abnormal current values, it indicates that the geomembrane 1 has a through-leakage point, which means that the leakage location needs to be located and repaired.

[0051] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0052] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0053] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and not to limit it; those skilled in the art will readily understand that the above description is only a preferred embodiment of this utility model, and is not intended to limit this utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A leak-proof device with monitoring function, characterized in that, include: The components include a geomembrane (1), a sensing cable (2), and a monitoring unit (3), wherein: The impermeable membrane (1) is placed on the working ground and includes at least two layers of electrically insulating geomembranes (11) stacked on top of each other, and the multiple geomembranes (11) are provided with sealing joints in the overlapping area of ​​the edges; Several of the aforementioned sensing cables (2) are arranged in parallel, uniformly distributed and without contact with each other at the upper and lower ends of the geomembrane (11); the sensing cables (2) are arranged in a U-shape, with both ends exposed from the seam on one side of the geomembrane (1) and the U-shaped bend close to the seam on the opposite side of the geomembrane (1), and bare wire segments are intermittently provided along the area of ​​the geomembrane (1); The monitoring unit (3) is electrically connected to both ends of each of the sensing cables (2), and supplies constant voltage power to each of the sensing cables (2) and obtains the current value on the sensing cables (2) in real time.

2. The anti-leakage device according to claim 1, characterized in that, The geomembrane (11) is mainly made of high-density polyethylene.

3. The anti-leakage device according to claim 1, characterized in that, Multiple sensing cables (2) located at different levels are aligned with each other in the vertical direction and the bare wire segments are positioned correspondingly; at the same time, the geomembrane (1) is sealed between two sensing cables (2) at the same level by hot-melt welding.

4. The anti-leakage device according to any one of claims 1-3, characterized in that, The portion of the sensing cable (2) outside the impermeable membrane (1) is covered with an outer insulation layer; The non-bare segment of the sensing cable (2) within the geomembrane (1) area is connected to the geomembrane (11) by sealant and / or sealing tape.

5. The anti-leakage device according to claim 4, characterized in that, The bare wire segment of the sensing cable (2) within the area of ​​the geomembrane (1) is 8-10cm long and the spacing between them is 8-10cm.

6. The anti-leakage device according to any one of claims 1-3, characterized in that, The monitoring unit (3) includes: a power supply module (31), a current measurement module (32), a first communication module (33), a second communication module (34), a memory module (35), a data processing module (36), and an output warning module (37); the power supply module (31) is electrically connected to the current measurement module (32) and the first communication module (33), and is electrically connected to both ends of the sensing cable (2) located outside the geomembrane (1); the current measurement module (32) is connected to the first communication module (33), and transmits the current information of the sensing cable (2) to the second communication module (34) connected to the first communication module (33) through the first communication module (33); the memory module (35) is connected to the second communication module (34), and stores the historical records of the current information and provides them to the data processing module (36) connected to it for further analysis; the data processing module (36) is also connected to the second communication module (34) and the output warning module (37).

7. The anti-leakage device according to claim 6, characterized in that, The monitoring unit (3) also includes a number of temperature sensors (38) located at the bottom of the geomembrane (1). The temperature sensors (38) maintain communication with the first communication module (33) through a wireless communication module, which includes an NB-IoT communication module or a LoRa communication module.

8. The anti-leakage device according to claim 7, characterized in that, The temperature sensor (38) is equipped with a timing control module connected to the wireless communication module. The timing control module enables the wireless communication module of the temperature sensor (38) to send temperature data to the first communication module (33) at preset time intervals.

9. The anti-leakage device according to claim 7, characterized in that, The temperature sensor (38) contains a lithium battery.

10. The anti-leakage device according to claim 9, characterized in that, The power supply module (31) includes an AC power supply or a solar power supply structure; The current measurement module (32) includes a Hall current sensor and an analog-to-digital converter connected to the Hall current sensor. The Hall current sensor is model ACS712 and the analog-to-digital converter is model AD7793. The first communication module (33) and the second communication module (34) both include wired and wireless communication modules. The wireless communication module is an NB-IoT communication module or a LoRa communication module, and the wired communication module is a USB interface or an RJ45 interface. The memory module (35) includes a mechanical hard drive or a solid-state drive connected via a SATA interface; The data processing module (36) includes a PLC or an FPGA; The output warning module (37) includes an LED light, a screen, or a speaker.

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