Multi-parameter geomembrane leakage and damage positioning and monitoring system

Abstract

The invention provides a multi-parameter geomembrane leakage damage positioning and monitoring system. The multi-parameter geomembrane leakage damage positioning and monitoring system comprises a plurality of multi-parameter positioning and monitoring sensors, a main anti-seepage geomembrane, a secondary anti-seepage geomembrane, an acquisition control center, a cloud server and a data analysis system, a plurality of multi-parameter positioning monitoring sensors are arranged below the main anti-seepage geomembrane or the secondary anti-seepage geomembrane according to a certain interval; each multi-parameter positioning monitoring sensor comprises an electrical parameter sensing unit, a pollution characteristic value parameter sensing unit and an acquisition switching unit; the acquisition switching unit switches and controls the multi-parameter positioning monitoring sensor according to the acquisition control signal; the acquisition control center transmits the electrical parameter data and the pollution characteristic value parameter data to a cloud server; and the cloud server obtains the position coordinates of leakage damage of the geomembrane and the range and degree of leakage pollution caused by leakage damage through the data analysis system. The leakage damage point coordinates are positioned through multiple parameters, and the pollution range and degree caused by leakage damage are judged at the same time.

Description

Technical Field

[0001] The present application belongs to the technical field of leakage and damage positioning and monitoring of anti-seepage geomembranes, and in particular to the technical field of long-term leakage and damage positioning of geomembrane anti-seepage projects, and specifically is a multi-parameter geomembrane leakage and damage positioning and monitoring system. Background Art

[0002] Solid waste landfills, artificial lakes, reservoirs, mine tailings ponds, hydrometallurgical heap leaching sites, and some high-standard anti-seepage projects generally use anti-seepage geomembranes to build anti-seepage systems. Geomembranes may be damaged during manufacturing, transportation, construction and installation, and damaged geomembranes will inevitably leak. For projects that generate pollutants at the source, such as solid waste landfills and mine tailings ponds, the leaked liquid will inevitably pollute the surrounding environment, such as groundwater and soil, causing environmental damage. For hydrometallurgical heap leaching projects and their solution pools, the leaked solution is equivalent to the loss of production materials and revenue, and will also pollute the environment, causing both environmental and economic losses.

[0003] Some feasible technologies are used for geomembrane leakage monitoring, such as groundwater monitoring wells. These patterns usually appear only after leakage pollution continues for a period of time and causes changes in the water quality at the location of the groundwater monitoring well. The monitoring process has a large lag. The monitoring results can only show that pollution has occurred, but cannot determine the location of the leakage, which is very uncertain. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a multi-parameter geomembrane leakage and damage positioning monitoring system for timely and accurately locating the location of geomembrane damage and leakage.

[0005] The embodiment of the present application provides a multi-parameter geomembrane leakage and damage positioning monitoring system, including: multiple multi-parameter positioning monitoring sensors, a primary anti-seepage geomembrane, a secondary anti-seepage geomembrane, a collection control center, a cloud server and a data analysis system; multiple multi-parameter positioning monitoring sensors are arranged under the primary anti-seepage geomembrane or under the secondary anti-seepage geomembrane at a certain interval and are located on a conductive surface layer; each of the multi-parameter positioning monitoring sensors includes a shell, an electrical parameter collection sensor unit and a pollution characteristic value parameter collection sensor unit arranged inside the shell, and a collection switching unit respectively connected to the electrical parameter sensor unit and the pollution characteristic value parameter sensor unit to control the switching of the electrical parameter collection sensor unit and the pollution characteristic value parameter collection sensor unit; wherein the probe of the electrical parameter sensor and the probe of the pollution characteristic value parameter sensor The probes are exposed from the shell respectively; the acquisition switching unit is connected to the acquisition control center arranged outside the shell, and switches and controls the multi-parameter positioning monitoring sensor according to the acquisition control signal output by the acquisition control center; the multi-parameter positioning monitoring sensor is controlled by the MCU; each of the multi-parameter positioning monitoring sensors is configured with a positioning module and an identification encoder for tracking and identifying the position and number of the sensor; the acquisition control center controls the acquisition of electrical parameter data and pollution characteristic value parameter data from each of the multi-parameter positioning monitoring sensors, and transmits the electrical parameter data and the pollution characteristic value parameter data to the cloud server; the cloud server calculates and analyzes the multi-parameter data collected by the acquisition control center through the data analysis system, obtains the coordinates of the leakage damage point, and judges the leakage pollution range and pollution degree caused by the damage.

[0006] In a possible implementation, when the electrical sensing units in each of the multi-parameter positioning monitoring sensors corresponding to the main anti-seepage geomembrane are turned on in sequence, the voltage value of each of the multi-parameter positioning monitoring sensors corresponding to the main anti-seepage geomembrane relative to the potential zero point is measured, or the voltage, current or resistance value between any two multi-parameter positioning monitoring sensors under the main anti-seepage geomembrane is measured; when the electrical parameter sensing units in each of the multi-parameter positioning monitoring sensors corresponding to the secondary anti-seepage geomembrane are turned on in sequence, the voltage value of each of the multi-parameter positioning monitoring sensors corresponding to the secondary anti-seepage geomembrane relative to the potential zero point is measured, or the voltage, current or resistance value between any two multi-parameter positioning monitoring sensors under the secondary anti-seepage geomembrane is measured; when each of the multi-parameter positioning monitoring sensors switches to pollution characteristic value parameter collection, the pollution characteristic value of any multi-parameter positioning monitoring sensor at the location under the main anti-seepage geomembrane or the secondary anti-seepage geomembrane is measured.

[0007] In a possible implementation, the housing of the electrical parameter sensing unit is made of conductive plastic, and the pollution characteristic value parameter sensing unit is made of corrosion-resistant material.

[0008] In a possible implementation, the multi-parameter positioning monitoring sensor integrates an electrical parameter sensing unit and a pollution characteristic value parameter sensing unit; the electrical parameter sensing unit integrates one or more combinations of voltage, current or resistance; the pollution characteristic value parameter sensing unit integrates one or more combinations of conductivity, temperature, biochemical oxygen demand, chemical oxygen demand, pH value, TDS total dissolved solids, salinity, redox potential, ammonia nitrogen, total phosphorus, and total organic carbon.

[0009] In a possible implementation manner, each of the multi-parameter positioning monitoring sensors is arranged under the primary anti-seepage geomembrane or under the secondary anti-seepage geomembrane at a set interval of 0.5 meters to 50 meters.

[0010] In a possible implementation, the conductive surface layer is a conductive geotextile or a conductive plastic net or a composite material layer made of conductive geotextile or a uniform soil cushion layer or other natural and synthetic materials with conductive function.

[0011] In one possible implementation, the acquisition control center adopts industrial Ethernet and distributed bus protocols, including any one or more combinations of RS485 bus, RS232 bus, CAN bus, FF field bus, LonWorks field bus, Profibus bus, Devicenet bus, CC-Link bus, and WorldFIP bus.

[0012] In a possible implementation, the cloud server obtains equipotential maps of electrical measurement values ​​and equipotential maps of pollution characteristic values ​​based on the electrical parameter data and pollution characteristic value parameter data collected by each of the multi-parameter positioning monitoring sensors, and obtains the coordinates of the leakage damage point based on each of the equipotential maps, and simultaneously determines the leakage pollution range and pollution degree caused by the damage.

[0013] In a possible implementation, each of the multi-parameter positioning monitoring sensors is made of fully sealed waterproof and anti-corrosion material, and the shell of each of the multi-parameter positioning monitoring sensors is made of anti-corrosion engineering plastics and is sealed by glue pouring; the cable connector connecting the multi-parameter positioning monitoring sensor and the acquisition control center is sealed by glue pouring, and the sealing level reaches IPX8.

[0014] As described above, the present application arranges a multi-parameter positioning monitoring sensor that integrates the electrical parameter and pollution characteristic value parameter collection function under the anti-seepage geomembrane, which can collect the electrical parameters above and below the geomembrane and the pollution characteristic value parameters under the membrane, locate the coordinates of the leakage damage point and the pollution leakage area through multi-parameters, and judge the degree of pollution at the same time. The present application avoids the omissions and false alarms caused by the influence of environmental factors in a single electrical parameter monitoring system; the present application can determine the leakage pollution area and the degree of pollution based on the distribution of the collected pollution characteristic values, and can determine the coordinate position of the leakage damage point based on the electrical parameter distribution characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 Shown is a schematic structural diagram of a multi-parameter geomembrane leakage location monitoring system in one embodiment of the present application.

[0017] 100-Multi-parameter geomembrane leakage and damage positioning monitoring system; 110-Multi-parameter positioning monitoring sensor; 120-Main anti-seepage geomembrane; 121-Power supply electrode on the main anti-seepage membrane; 122-Power supply electrode under the main anti-seepage membrane; 130-Secondary anti-seepage geomembrane; 131-Power supply electrode under the secondary anti-seepage membrane; 140-Conductive surface layer; 150-Collection control center; 160-Cloud server; 170-Client; 180-Signal transmission control cable; 190-Excitation power supply. DETAILED DESCRIPTION

[0018] The following is an explanation of the embodiments of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific embodiments, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0019] Below Figure 1 For reference, the embodiments of the present application are described in detail so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0020] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, without contradiction.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, "a group" means two or more, unless otherwise clearly and specifically defined.

[0022] Although the terms first, second, etc. are used to represent various structural features in the present application in some examples, these structural features should not be limited by these terms. These terms are only used to distinguish one structural feature from another structural feature. Furthermore, as used in the present embodiment, the singular forms "one", "an" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the existence of the structural features described, but do not exclude the existence, occurrence or addition of one or a group of other structural features. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of structural features is inherently mutually exclusive in some way, the exception to this definition will occur.

[0023] In order to clearly describe the present application, structures not related to the description are omitted, and the same reference numerals are given to the same or similar structures throughout the specification.

[0024] Throughout the description of the specific embodiments, when it is said that a certain structure is "connected" to another structure, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other structural elements therebetween. In addition, when it is said that a certain structure "includes" a certain constituent element, unless otherwise specifically stated, it does not exclude other constituent elements, but means that other constituent elements may be included.

[0025] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present application. The singular form used herein also includes the plural form as long as the sentence does not clearly indicate the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics and structural elements, and does not exclude the existence or addition of other characteristics and structural elements.

[0026] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and as long as they are not defined, they should not be overly interpreted as ideal or very formal meanings.

[0027] This embodiment optimizes the collection and method of the current existing monitoring system. It uses a system that integrates electrical and pollution characteristic values ​​to collect pollution characteristic value parameter data while collecting electrical parameter data. The location of the leakage damage point and the leakage and contaminated area are multiple judged through electrical parameters and pollution characteristic value parameters, which improves the judgment accuracy of the location of the leakage damage point and can monitor the degree of pollution caused by the leakage.

[0028] The following will be combined Figure 1 The principle and implementation of a multi-parameter geomembrane leakage and damage positioning monitoring system of this embodiment are explained in detail so that those skilled in the art can understand the multi-parameter geomembrane leakage and damage positioning monitoring system of this embodiment without creative work.

[0029] like Figure 1 As shown, an embodiment of the present application provides a multi-parameter geomembrane leakage and damage positioning monitoring system 100, including: multiple multi-parameter positioning monitoring sensors 110, a primary anti-seepage geomembrane 120, a secondary anti-seepage geomembrane 130, a data collection and control center 150, a cloud server 160, and a data analysis system arranged in the cloud server 160.

[0030] The plurality of multi-parameter positioning monitoring sensors 110 are respectively arranged under the primary anti-seepage geomembrane 120 and the secondary anti-seepage geomembrane 130 at a certain interval and are located on the conductive surface layer 140 .

[0031] Each of the multi-parameter positioning monitoring sensors 110 includes a shell, an electrical parameter sensing unit and a pollution characteristic value parameter sensing unit arranged inside the shell, and a collection switching unit respectively connected to the electrical parameter sensing unit and the pollution characteristic value parameter sensing unit to control the switching of the electrical parameter sensing unit and the pollution characteristic value parameter sensing unit.

[0032] Among them, the probe of the electrical parameter sensing unit and the probe of the pollution characteristic value parameter sensing unit are respectively exposed from the shell; the acquisition switching unit is connected to the acquisition control center 150 arranged outside the shell, and switches and controls the multi-parameter positioning monitoring sensor 110 according to the acquisition control signal output by the acquisition control center 150.

[0033] In this embodiment, the acquisition control center 150 controls the acquisition of electrical parameter data and pollution characteristic value parameter data from each of the multi-parameter positioning monitoring sensors 110, and transmits the electrical parameter data and the pollution characteristic value parameter data to the cloud server 160; the data analysis system in the cloud server 160 obtains the location coordinates of the leakage damage point, the leakage pollution range and the pollution degree.

[0034] As can be seen from the above, the multi-parameter geomembrane leakage and damage positioning monitoring system 100 in this embodiment includes a number of multi-parameter positioning monitoring sensors 110 that integrate electrical parameter collection and pollution characteristic numerical parameter collection. The multi-parameter positioning monitoring sensors 110 are arranged under the main anti-seepage geomembrane 120 at a certain interval to collect electrical parameter data and pollution characteristic value parameter data under the main anti-seepage geomembrane 120, and electrical parameter data and pollution characteristic numerical parameter data on the secondary anti-seepage geomembrane 130.

[0035] It should be noted that in this embodiment, the multi-parameter positioning monitoring sensor 110 can also have a power supply function. When the control is switched to the power supply mode, the multi-parameter positioning monitoring sensor 110 is connected to the power supply unit (external power supply or energy storage battery) to supply power to the upper and lower parts of the anti-seepage geomembrane, and provide the additional electric field required for collection in the monitoring area. When the multi-parameter positioning monitoring sensor 110 is switched to the collection function, the electrical parameter data and pollution characteristic value parameter data of the corresponding area of ​​the multi-parameter positioning monitoring sensor 110 are collected by controlling the switching of each multi-parameter positioning monitoring sensor 110.

[0036] In addition, if Figure 1 As shown, in this embodiment, an excitation power supply 190 may also be included. The excitation power supply 190 includes a plurality of power supply electrodes 121 on the main anti-seepage membrane, a power supply electrode 122 under the main anti-seepage membrane, and a power supply electrode 131 under the secondary anti-seepage membrane arranged at a certain interval; the power supply electrode 121 on the main anti-seepage membrane and the power supply electrode 122 under the main anti-seepage membrane are respectively connected to the upper and lower membranes of the main anti-seepage geomembrane 120, so that an electric field is formed above and below the main anti-seepage geomembrane 120, and an electric field is formed between the secondary anti-seepage geomembrane 130 and the earth.

[0037] Among them, the power supply electrode 121 on the main anti-seepage membrane, the power supply electrode 122 under the main anti-seepage membrane, and the power supply electrode 131 under the secondary anti-seepage membrane are made of non-metallic plastic to form non-metallic power supply electrodes, so as to avoid the corrosion and oxidation of metal electrodes. The power supply electrodes made of metal materials have the risk of damaging the anti-seepage geomembrane. In addition, the power supply electrode and the power supply cable are fully sealed to prevent the metal conductor from being corroded and damaged.

[0038] In this embodiment, the cloud server 160 analyzes the collected electrical parameter data and pollution characteristic value parameter data through the data analysis system, calculates the accurate position coordinates of the leakage damage point through the electric field distribution, and delineates the leakage pollution area and pollution degree through the pollution characteristic value parameter data. This embodiment adds pollution characteristic value parameter data collection to the traditional monitoring system, and changes the centralized collection mode to the distributed multi-parameter positioning monitoring sensor 110 collection mode, greatly improving the accuracy of anti-seepage geomembrane leakage pollution monitoring. Through this embodiment, environmental pollution and economic losses caused by geomembrane leakage can be effectively avoided.

[0039] The following is a detailed description of the multiple multi-parameter positioning monitoring sensors 110, the primary anti-seepage geomembrane 120, the secondary anti-seepage geomembrane 130, the data collection and control center 150, the cloud server 160 and the data analysis system of this embodiment.

[0040] In a possible implementation of the present embodiment, each of the multi-parameter positioning monitoring sensors 110 is made of fully sealed waterproof and anti-corrosion material, and the shell of each of the multi-parameter positioning monitoring sensors 110 is made of anti-corrosion engineering plastics and is sealed by glue injection; the cable joint connecting the multi-parameter positioning monitoring sensor 110 and the acquisition control center 150 is sealed by glue injection, and the sealing level reaches IPX8.

[0041] That is to say, each of the multi-parameter positioning monitoring sensors 110 in this embodiment is made of fully sealed waterproof and anti-corrosion materials, and the multi-parameter positioning monitoring sensor 110 is made of anti-corrosion engineering plastics and sealed by effective glue injection. All cable connectors connected to the multi-parameter positioning monitoring sensor 110 are sealed by glue injection, and the sealing level reaches IPX8.

[0042] In this embodiment, the shape of the multi-parameter positioning monitoring sensor 110 can be circular, square or any other shape, and can be any structure as long as it can obtain electrical parameter data and pollution characteristic value parameter data.

[0043] In a possible implementation of this embodiment, a plurality of multi-parameter positioning monitoring sensors 110 integrated with electrical parameter collection and pollution characteristic value parameter collection are arranged under the main anti-seepage geomembrane 120 or the secondary anti-seepage geomembrane 130 at a set interval, and are used to collect electrical parameter data and pollution characteristic value parameter data under the main anti-seepage membrane, or electrical parameter data and pollution characteristic parameter data under the secondary anti-seepage membrane, and transmit the collected data to the collection control center 150. The collection control center 150 collects the electrical parameter data and pollution characteristic value parameter data collected by the multi-parameter positioning monitoring sensor 110, and uploads the collected data to the cloud server 160. The data analysis system in the cloud server 160, for example, completes data analysis and calculation processing through big data models and inverse calculation analysis, and then outputs monitoring results such as the location coordinates of the leakage damage point, the leakage pollution range and the pollution degree.

[0044] Specifically, in this embodiment, when the electrical parameter sensing units in each of the multi-parameter positioning monitoring sensors 110 corresponding to the main anti-seepage geomembrane 120 are turned on in sequence, the potential value of each of the multi-parameter positioning monitoring sensors 110 corresponding to the main anti-seepage geomembrane 120 is measured relative to the potential zero point, or the voltage, current or resistance value between any two multi-parameter positioning monitoring sensors 110 under the main anti-seepage geomembrane 120 is measured; when the electrical parameter sensing units in each of the multi-parameter positioning monitoring sensors 110 corresponding to the secondary anti-seepage geomembrane 130 are turned on in sequence, ... and the electrical parameter sensing units in each of the multi-parameter positioning monitoring sensors 110 corresponding to the secondary anti-seepage geomembrane 130 are turned on in sequence. The sensing units are turned on in sequence to measure the potential value of each multi-parameter positioning monitoring sensor 110 corresponding to the secondary anti-seepage geomembrane 130 relative to the potential zero point, or measure the voltage, current or resistance value between any two multi-parameter positioning monitoring sensors 110 under the secondary anti-seepage geomembrane 130; when each multi-parameter positioning monitoring sensor 110 switches to pollution characteristic value parameter collection, the pollution characteristic value data of the area where any multi-parameter positioning monitoring sensor 110 is located under the main anti-seepage geomembrane 120 or the secondary anti-seepage geomembrane 130 is measured.

[0045] In this embodiment, each multi-parameter positioning monitoring sensor 110 is distributedly arranged, and each multi-parameter positioning monitoring sensor 110 collects electrical parameter data and pollution characteristic value parameter data. The multi-parameter positioning monitoring sensor 110 integrates the electrical parameter data collection and pollution characteristic value parameter data collection functions, collects the electrical parameter data of the upper and lower membranes, and collects the pollution characteristic value parameter data between the membranes.

[0046] In a possible implementation of this embodiment, the electrical parameter sensing unit is made of conductive plastic, and the pollution characteristic value parameter sensing unit is made of corrosion-resistant material, preferably titanium. That is, the electrical parameter data is collected by the sensing element made of conductive plastic, and the pollution characteristic value data is collected by the sensing element made of corrosion-resistant material.

[0047] In this embodiment, the multi-parameter positioning monitoring sensor 110 integrates a sensor unit for collecting electrical parameter data, and realizes the collection function of electrical data through the conductive layer on the surface of the multi-parameter positioning monitoring sensor 110. The multi-parameter positioning monitoring sensor 110 integrates a pollution characteristic value parameter collection sensor unit to realize the collection function of one or more pollution characteristic numerical parameter data. The multi-parameter positioning monitoring sensor 110 has a built-in collection switching unit to realize the conduction or closure of each collection terminal to achieve the purpose of switching collection.

[0048] In a possible implementation of this embodiment, the multi-parameter positioning monitoring sensor 110 integrates an electrical parameter sensing unit and a pollution characteristic value parameter sensing unit; the electrical parameter sensing unit is a sensor integrating one or more combinations of voltage, current or resistance; the pollution characteristic value parameter sensing unit is a sensor integrating one or more combinations of conductivity, temperature, biochemical oxygen demand, chemical oxygen demand, pH value, TDS total dissolved solids, salinity, redox potential, ammonia nitrogen, total phosphorus, and total organic carbon.

[0049] That is to say, in this embodiment, the multi-parameter positioning monitoring sensor 110 is controlled by the acquisition control center 150 (such as a microcomputer code MCU) to achieve the purpose of collecting electrical parameter data and pollution characteristic value parameter data. The electrical parameter sensing unit can realize the acquisition of electrical parameter data such as voltage, current, and resistance. The pollution characteristic value parameter sensing unit can realize the acquisition of pollution characteristic value parameter data, including but not limited to conductivity, temperature, biochemical oxygen demand (BOD), chemical oxygen demand (CODcr), pH value, TDS total dissolved solids, salinity, oxidation-reduction potential (ORP), ammonia nitrogen, total phosphorus, and total organic carbon (TOC). That is, the multi-parameter positioning monitoring sensor 110 can integrate an electrical parameter sensing unit and one or more pollution characteristic value parameter sensing units to realize the monitoring of electrical parameter data caused by leakage and damage and the monitoring of pollution characteristic value parameter data.

[0050] The spacing between the multi-parameter positioning monitoring sensors 110 can be any set value. In a possible implementation of this embodiment, the multi-parameter positioning monitoring sensors 110 are arranged under the primary anti-seepage geomembrane 120 and the secondary anti-seepage geomembrane 130 at a spacing of 0.5 meters to 50 meters, preferably at a lattice spacing of 5 meters × 5 meters, and are located on a plane material layer with conductive properties (i.e., the conductive surface layer 140).

[0051] For example, in practical applications, in this embodiment, the multi-parameter positioning monitoring sensors 110 are arranged at a certain interval below the main anti-seepage geomembrane 120. The multi-parameter positioning monitoring sensors 110 are arranged at any interval, which can be equal intervals or non-equal intervals. The interval is generally not more than 10 meters, and the interval is 1 to 6 meters.

[0052] The conductive surface layer 140 may be a specially made synthetic material, not limited to conductive geotextile, conductive plastic mesh, a composite material layer made of conductive geotextile or a uniform soil cushion layer, preferably conductive geotextile and conductive plastic mesh.

[0053] In a possible implementation of this embodiment, each of the multi-parameter positioning monitoring sensors 110 is configured with a positioning module and an identification encoder. For example, each of the multi-parameter positioning monitoring sensors 110 in this embodiment is arranged on the conductive plane layer under the main anti-seepage geomembrane 120 at a certain interval. The spacing of the multi-parameter positioning monitoring sensors 110 can be any set value. Through the positioning module and the identification encoder, the placement position of each multi-parameter positioning monitoring sensor 110 is accurately located, and the accurate coordinates of each position are recorded, and the position coordinates of each multi-parameter positioning monitoring sensor 110 can be traced and restored.

[0054] In this embodiment, each of the multi-parameter positioning monitoring sensors 110 is connected to the acquisition control center 150 via a signal transmission control cable 180. The multi-parameter positioning monitoring sensors 110 and the signal transmission control cables 180 arranged under the primary anti-seepage geomembrane 120 or the secondary anti-seepage geomembrane 130 are fully sealed and connected, and the waterproof grade reaches IPX8. Among them, each signal transmission control cable 180 can be connected to one or more multi-parameter positioning monitoring sensors 110.

[0055] In this embodiment, in specific applications, several of the multi-parameter positioning monitoring sensors 110 are arranged under the main anti-seepage geomembrane 120 at a set interval. When the power supply electrode 121 on the main anti-seepage membrane and the power supply electrode 122 under the main anti-seepage membrane are connected, the multi-parameter positioning monitoring sensors 110 are turned on in sequence, and the potential of each multi-parameter positioning monitoring sensor 110 of the main anti-seepage geomembrane 120 relative to the potential zero point can be measured, and the voltage, current or resistance value between any two multi-parameter positioning monitoring sensors 110 under the main anti-seepage geomembrane 120 can also be measured; when the power supply electrode under the secondary anti-seepage geomembrane 130 is connected, the potential of each multi-parameter positioning monitoring sensor 110 of the secondary anti-seepage geomembrane 130 relative to the potential zero point can be measured, and the voltage, current or resistance value between any two multi-parameter positioning monitoring sensors 110 on the secondary anti-seepage geomembrane 130 can also be measured. When switching to pollution characteristic value parameter data collection, the pollution characteristic value parameter data of the area where any multi-parameter positioning monitoring sensor 110 is located under the secondary anti-seepage geomembrane 130 can be measured. The pollution characteristic value parameters include but are not limited to electrical conductivity (EC), temperature, biochemical oxygen demand (BOD), chemical oxygen demand (CODcr), pH value, TDS total dissolved solids, salinity, oxidation-reduction potential (ORP), ammonia nitrogen, total phosphorus, total organic carbon (TOC). The pollution characteristic value parameters can be one or a combination of several.

[0056] Once there are damaged holes in the main anti-seepage geomembrane 120, liquid on the main anti-seepage geomembrane 120 leaks through the main anti-seepage geomembrane 120, and the multi-parameter positioning monitoring sensor 110 under the main anti-seepage geomembrane 120 can detect the changes in the electric field and the changes in the pollution characteristic value parameter data caused by the damage and leakage. The data analysis system calculates and analyzes the electrical parameters and pollution characteristic value parameter data collected by each multi-parameter positioning monitoring sensor 110, draws an equipotential map, and can locate the coordinates of the leakage and damage, determine the area and degree of leakage pollution, and trace the coordinates to find the actual holes and perform repairs, thereby reducing or even avoiding leakage caused by damage.

[0057] In this embodiment, the anti-seepage geomembrane can be a single-layer membrane, which can only include the main anti-seepage geomembrane 120, or a double-layer membrane: including the main anti-seepage geomembrane 120 and the secondary anti-seepage geomembrane 130. Regardless of whether it is a single-layer membrane anti-seepage structure or a double-layer membrane anti-seepage structure, there needs to be a conductive surface layer 140 under the main anti-seepage geomembrane 120 to provide a conductive layer for potential collection for the multi-parameter positioning monitoring sensor 110. The conductive surface layer 140 can be an artificial synthetic conductive material or a natural conductive material. Artificial synthetic materials include any one of conductive geotextiles, materials composited with conductive geotextiles, conductive geomembranes, etc., preferably conductive geotextiles. Natural conductive materials include moist clay cushions and other conductive natural materials.

[0058] When the multi-parameter geomembrane leakage and damage positioning monitoring system 100 is a single-layer geomembrane, the multi-parameter positioning monitoring sensor 110 is arranged under the single-layer anti-seepage geomembrane and fixed on the conductive surface layer 140. The multi-parameter geomembrane leakage and damage positioning monitoring system 100 collects the electrical parameter data and pollution characteristic value parameter data of the monitoring electrode of each multi-parameter positioning monitoring sensor 110 under the membrane, and uploads them to the data analysis system of the cloud server 160 for calculation and analysis, so as to obtain the leakage situation of the anti-seepage geomembrane and locate the coordinates of the leakage and damage position.

[0059] When the multi-parameter geomembrane leakage and damage positioning monitoring system 100 is a double-layer geomembrane, a plurality of the multi-parameter positioning monitoring sensors 110 are arranged under the primary anti-seepage geomembrane 120 and fixed on the conductive surface layer 140, and a plurality of the multi-parameter positioning monitoring sensors 110 are arranged under the secondary anti-seepage geomembrane 130. The multi-parameter geomembrane leakage and damage positioning monitoring system 100 collects the electrical parameter data and pollution characteristic value parameter data of the monitoring electrode of each multi-parameter positioning monitoring sensor 110 under the membrane, and uploads them to the data analysis system of the cloud server 160 for calculation and analysis to obtain the leakage and damage coordinates, leakage pollution area and pollution degree.

[0060] The multi-parameter positioning monitoring sensors 110 are generally arranged at equal intervals, and the intervals can be any value, usually 1 to 10 meters. For special projects, the multi-parameter positioning monitoring sensors 110 can also be arranged at non-equal intervals. The placement position of each multi-parameter positioning monitoring sensor 110 must be accurately located, and all position coordinates must be recorded and accurately traceable.

[0061] Among them, each of the multi-parameter positioning monitoring sensors 110 can be connected to the acquisition switching switch through a signal transmission control cable, and the acquisition switch is controlled by the acquisition control center 150 to switch each input. All signals enter the acquisition control center 150, and the electrical parameter values ​​and pollution characteristic value parameter values ​​sent back by the multi-parameter positioning monitoring sensor 110 are read by the acquisition control center 150. All data are transmitted to the cloud server 160 through the network. The data analysis system in the cloud server 160 finally determines the damage point of the anti-seepage geomembrane through calculation, calculates the coordinates of the damage point, and notifies the relevant responsible party of the coordinate information of the damage point. The client 170 of the relevant responsible party finds the damaged location and repairs it through positioning and tracing based on the calculated coordinate point information.

[0062] As can be seen from the above, the multi-parameter positioning monitoring sensor 110 of the geomembrane leakage and damage positioning monitoring system 100 in this embodiment integrates the electrical parameter data and pollution characteristic value parameter data collection functions, and can collect electrical parameter data above and below the geomembrane and pollution characteristic value parameter data under the membrane. It can locate the leakage damage point and the leakage contaminated area through multiple parameters, and judge the degree of pollution at the same time, avoiding omissions and false alarms caused by the influence of environmental factors in the single parameter monitoring system.

[0063] In a possible implementation of this embodiment, the acquisition control center 150 adopts industrial Ethernet and distributed bus protocols, including any one or more combinations of RS485 bus, RS232 bus, CAN bus, FF field bus, LonWorks field bus, Profibus bus, Devicenet bus, CC-Link bus, and WorldFIP bus.

[0064] That is to say, in this embodiment, the control of data acquisition adopts industrial Ethernet and distributed bus protocols, including but not limited to RS485 bus, RS232 bus, CAN bus, FF field bus, LonWorks field bus, Profibus bus, Devicenet bus, CC-Link bus, WorldFIP bus. The collected data is uploaded to the cloud server 160 for data analysis. The cloud server 160 performs data analysis through a pre-built-in data analysis system to obtain the coordinates of the leakage damage point and the leakage contaminated area. The calculation results are output in the form of images, data tables, information feedback, etc.

[0065] In this embodiment, the acquisition control center 150 is the nerve center of the pollution monitoring system. It sends acquisition instructions to each multi-parameter positioning monitoring sensor 110 through bus control. After receiving the instructions, each multi-parameter positioning monitoring sensor 110 reads the electrical parameter data and pollution characteristic value parameter data at the location. The acquisition control center 150 packages the collected data and sends it to the cloud server 160. The data analysis system of the cloud server 160 classifies the data sent by the acquisition control center 150 and performs shape analysis and processing, and finally forms an equipotential map of the electrical parameter measurement values ​​and the pollution characteristic value parameter measurement values ​​in the monitoring range. According to the equipotential map, the location of the leakage area and the degree of pollution can be determined.

[0066] In a possible implementation of this embodiment, the cloud server 160 obtains an equipotential map of electrical parameter measurement values ​​and an equipotential map of pollution characteristic value parameter measurement values ​​based on the electrical parameter data and pollution characteristic value parameter data collected by each of the multi-parameter positioning monitoring sensors 110, and obtains the coordinates of the leakage damage point, as well as the leakage pollution range and pollution degree based on each of the equipotential maps.

[0067] Therefore, the geomembrane leakage and damage positioning monitoring system 100 in this embodiment can determine the leakage pollution area and pollution degree according to the distribution of the collected pollution characteristic value parameter data, and can determine the coordinates of the leakage and damage according to the distribution characteristics of the electrical parameter data. After all data are calculated by the data analysis system in the cloud server, the leakage or pollution situation is displayed or notified to the client 170 of the relevant responsible person.

[0068] In order to enable those skilled in the art to further understand the principle of the present invention, the monitoring process of this embodiment is described below, specifically as follows: The excitation power supply 190 is connected to the power supply electrode 121 on the main anti-seepage membrane, the power supply electrode 122 under the main anti-seepage membrane, and the power supply electrode 131 under the secondary anti-seepage membrane through a power line. For the main anti-seepage geomembrane 120, the power supply electrode 121 on the main anti-seepage membrane and the power supply electrode 122 under the main anti-seepage membrane are respectively connected to the upper and lower parts of the main anti-seepage geomembrane 120, so that a stable electric potential field is formed above and below the main anti-seepage geomembrane 120. Once the main anti-seepage geomembrane 120 is damaged and leaks, a point power source electric field is formed in the leak area, and the potential of the point is abnormal. By reading the potential data of each multi-parameter positioning monitoring sensor 110, the abnormal current density area on the main anti-seepage geomembrane 120 can be determined, thereby determining the specific leakage point on the main anti-seepage geomembrane 120 and issuing an alarm prompt. At the same time, the multi-parameter positioning monitoring sensor 110 located under the main anti-seepage geomembrane 120 transmits the pollution characteristic value parameter data to the acquisition control center 150. The acquisition control center 150 reads the pollution characteristic value parameter data of the multi-parameter positioning monitoring sensor 110, and can determine the leakage pollution area and the degree of pollution, and combine the electric field analysis results to give the coordinate position of the leakage damage. For the secondary anti-seepage geomembrane 130, the power supply electrode 122 under the main anti-seepage membrane and the power supply electrode 131 under the secondary anti-seepage membrane are respectively connected to the upper and lower parts of the secondary anti-seepage geomembrane 130, so that a stable electric field is formed above and below the secondary anti-seepage geomembrane 130. If the secondary anti-seepage geomembrane 130 leaks and breaks, a point electric field is formed in the leak area of ​​the secondary anti-seepage geomembrane 130, and the current density at the point suddenly changes. By reading the electrical parameter data of the multi-parameter positioning monitoring sensor 110 and analyzing and calculating the data, the coordinate information of the leakage damage point can be obtained.

[0069] To summarize, the present application arranges a multi-parameter positioning monitoring sensor that integrates electrical parameter data and pollution characteristic value parameter data collection functions under the anti-seepage geomembrane, so as to collect electrical parameter data above and below the geomembrane and pollution characteristic value parameter data under the membrane, locate the leakage and damage position through multiple parameters, judge the pollution leakage area and pollution degree, and avoid omissions and false alarms caused by the influence of environmental factors in the single parameter monitoring system; the present application can determine the leakage pollution area and pollution degree based on the distribution of the collected pollution characteristic value parameter data, and the distribution characteristics of the electrical parameter data can determine the coordinates of the leakage and damage.

[0070] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A multi-parameter geomembrane leakage and damage positioning monitoring system, characterized in that: include: Multiple multi-parameter positioning monitoring sensors, primary anti-seepage geomembrane, secondary anti-seepage geomembrane, data collection and control center, cloud server and data analysis system; A plurality of multi-parameter positioning monitoring sensors are arranged under the primary anti-seepage geomembrane or the secondary anti-seepage geomembrane at a certain interval and are located on the conductive surface layer; Each of the multi-parameter positioning monitoring sensors includes a shell, an electrical parameter sensing unit and a pollution characteristic value parameter sensing unit arranged inside the shell, and a collection switching unit respectively connected to the electrical parameter sensing unit and the pollution characteristic value parameter sensing unit to control the switching of the electrical parameter sensing unit and the pollution characteristic value parameter sensing unit; wherein the probe of the electrical parameter sensing unit and the probe of the pollution characteristic value parameter sensing unit are respectively exposed from the shell; the collection switching unit is connected to a collection control center arranged outside the shell, and switches and controls the multi-parameter positioning monitoring sensor according to a collection control signal output by the collection control center; the multi-parameter positioning monitoring sensor is controlled by an MCU; each of the multi-parameter positioning monitoring sensors is configured with a positioning module and an identification encoder for tracking and identifying the position and number of the sensor; The acquisition control center controls the multi-parameter positioning monitoring sensor to collect electrical parameter data and pollution characteristic value parameter data, and transmits the electrical parameter data and the pollution characteristic value parameter data to the cloud server; The cloud server calculates and analyzes the multi-parameter data collected by the collection and control center through the data analysis system to obtain the coordinates of the geomembrane leakage and damage points, and at the same time determines the scope and degree of leakage pollution caused by the damage.

2. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: When the electrical parameter sensing units in each of the multi-parameter positioning monitoring sensors corresponding to the main anti-seepage geomembrane are turned on in sequence, the potential values ​​of each of the multi-parameter positioning monitoring sensors corresponding to the main anti-seepage geomembrane relative to the potential zero point are measured, or the potential value between any two multi-parameter positioning monitoring sensors under the main anti-seepage geomembrane is measured; when the electrical parameter sensing units in each of the multi-parameter positioning monitoring sensors corresponding to the secondary anti-seepage geomembrane are turned on in sequence, the potential values ​​of each of the multi-parameter positioning monitoring sensors corresponding to the secondary anti-seepage geomembrane relative to the potential zero point are measured, or the potential value between any two multi-parameter positioning monitoring sensors under the secondary anti-seepage geomembrane is measured; when each of the multi-parameter positioning monitoring sensors switches to pollution characteristic value parameter collection, the pollution characteristic value of any multi-parameter positioning monitoring sensor at the location under the main anti-seepage geomembrane or the secondary anti-seepage geomembrane is measured.

3. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: The electrical parameter sensing unit is made of conductive plastic, and the pollution characteristic value parameter sensing unit is made of corrosion-resistant material.

4. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 or 3, characterized in that: The multi-parameter positioning monitoring sensor integrates an electrical parameter sensing unit and a pollution characteristic value parameter sensing unit; the electrical parameter sensing unit integrates one or more combinations of voltage, current or resistance; the pollution characteristic value parameter sensing unit integrates one or more combinations of conductivity, temperature, biochemical oxygen demand, chemical oxygen demand, pH value, TDS total dissolved solids, salinity, redox potential, ammonia nitrogen, total phosphorus, and total organic carbon.

5. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: Each of the multi-parameter positioning monitoring sensors is arranged under the primary anti-seepage geomembrane or the secondary anti-seepage geomembrane according to a preset dot matrix spacing, and the spacing is 0.5 meters to 50 meters.

6. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: The conductive surface layer is a conductive geotextile or a conductive plastic net or a composite material layer made of conductive geotextile or a uniform soil cushion layer.

7. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: The acquisition control center adopts industrial Ethernet and distributed bus protocols, including any one or more combinations of RS485 bus, RS232 bus, CAN bus, FF field bus, LonWorks field bus, Profibus bus, Devicenet bus, CC-Link bus, and WorldFIP bus.

8. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: The cloud server analyzes and draws equipotential maps of electrical measurement values ​​and equipotential maps of pollution characteristic values ​​based on the electrical parameter data and pollution characteristic value parameter data collected by each of the multi-parameter positioning monitoring sensors, and obtains the coordinates of the leakage and damage points based on each of the equipotential maps, while determining the scope and degree of leakage pollution caused by the damage.

9. The multi-parameter geomembrane leakage and damage positioning monitoring system according to claim 1 is characterized in that: Each of the multi-parameter positioning monitoring sensors is made of fully sealed waterproof and anti-corrosion material. The shell of each of the multi-parameter positioning monitoring sensors is made of anti-corrosion engineering plastics and is sealed by glue injection. The cable connector connecting the multi-parameter positioning monitoring sensor and the acquisition control center is sealed by glue injection, and the sealing level reaches IPX8.

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