Real-time monitoring, early warning and data acquisition system and method for potential polluted land parcels

Abstract

The invention relates to the technical field of environmental monitoring, and discloses a real-time monitoring and early warning and data acquisition system and method for a potential polluted land parcel. Collecting geoelectric parameters of the potential polluted land parcels through a geoelectric cable connected in series with a plurality of geoelectric electrodes; the multi-parameter sensor collects physicochemical parameters of the potential polluted land parcels; a ground electricity measuring instrument connected with the ground electricity cable obtains ground electricity parameters; a multi-parameter measuring instrument connected with the multi-parameter sensor is used for acquiring physical and chemical parameters; the monitoring and early warning platform determines a mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and the physicochemical parameters corresponding to each acquisition period; based on the materialization early warning threshold of the materialization parameter and the mapping relation, determining the geoelectric early warning threshold of the geoelectric parameter; carrying out real-time monitoring and early warning on the potential polluted land parcels based on a physicochemical early warning threshold value and a geoelectricity early warning threshold value; the mapping relation between the geoelectric parameters and the physicochemical parameters can be described in time, and therefore whole-process real-time monitoring and dynamic early warning can be carried out on potential polluted land parcels.

Description

Technical Field

[0001] The present disclosure relates to the field of environmental monitoring technology, and in particular to a real-time monitoring, early warning and data collection system and method for potentially contaminated land. Background Art

[0002] For operating sites with hardened surfaces such as oil tank plants, chemical parks, municipal roads, gas stations, and landfills, natural disasters, improper storage of raw materials and waste disposal in chemical plants, enterprise relocation and transportation, and pipeline damage can easily cause soil and groundwater pollution. Real-time monitoring of potentially contaminated sites is an important guarantee for assessing the safety of the soil and groundwater environment.

[0003] At present, the monitoring method of underground pollution is mainly based on traditional drilling sampling. Specifically, the surface is drilled by a drilling rig to obtain a monitoring well; the monitoring results are determined by obtaining the data of the monitoring well. At this time, although the accuracy of a single monitoring point is high, the cost and risk of establishing a large number of monitoring wells are high, and the well construction process requires the destruction of surface structures such as hardened ground, which has the potential risk of damaging the waterproof bottom plate and pipeline network. In addition, the temporal and spatial distribution of monitoring information is discontinuous, making it difficult to achieve real-time monitoring and early warning of the entire process.

[0004] In order to make up for the defects of traditional drilling sampling monitoring methods, a variety of in-situ testing methods and geophysical methods are applied to environmental monitoring projects. Among them, the in-situ testing method refers to a method of obtaining the engineering characteristic parameters of the rock and soil body in its natural state as much as possible, that is, without disturbing or minimally disturbing its original structure and physical and mechanical properties. However, the in-situ testing method also has the defect of a single monitoring point, and the surface structure such as hardened ground needs to be destroyed during the measurement process.

[0005] Geophysical methods are a series of methods that use physical principles and techniques to study the structure, composition and physical processes of the earth and its interior. Although geophysical methods can achieve non-destructive detection, the real-time monitoring process is in the initial exploration stage, and it is difficult to obtain dynamic change information of the strata, thus making it impossible to achieve real-time monitoring and early warning of potential contaminated plots, which is not conducive to timely investigation of sudden accidents such as pollution leaks, and poses a major environmental safety hazard. Summary of the invention

[0006] In view of this, the present invention proposes a real-time monitoring, early warning and data acquisition system and method for potentially contaminated sites, which can determine the coordinated change relationship between geoelectric parameters and physicochemical parameters, establish multi-source parameter early warning thresholds, and provide real-time monitoring and timely early warning for the environmental safety of soil and groundwater in potentially contaminated sites.

[0007] According to one aspect of the present disclosure, a real-time monitoring, early warning and data collection system for potentially contaminated land is provided, the system comprising:

[0008] A geoelectric cable having a plurality of geoelectric electrodes connected in series is used for laying in a potentially contaminated land to collect geoelectric parameters of the potentially contaminated land;

[0009] A multi-parameter sensor is used to be arranged on the potential contaminated land to collect the physical and chemical parameters of the potential contaminated land;

[0010] A geoelectric measuring instrument connected to the geoelectric cable, used to obtain the geoelectric parameters;

[0011] A multi-parameter measuring instrument connected to the multi-parameter sensor, used to obtain the physicochemical parameters;

[0012] A monitoring and early warning platform is used to obtain the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle; based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle, determine the mapping relationship between the geoelectric parameters and the physicochemical parameters; based on the physicochemical early warning threshold of the physicochemical parameters and the mapping relationship, determine the geoelectric early warning threshold of the geoelectric parameters; based on the physicochemical early warning threshold and the geoelectric early warning threshold, perform real-time monitoring and early warning of the potential contaminated land.

[0013] In a possible implementation, determining the mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and the physicochemical parameters corresponding to each acquisition period includes:

[0014] Acquire a mapping relationship model between the geoelectric parameters and the physicochemical parameters;

[0015] Based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition period, the model parameters in the mapping relationship model are determined to obtain the mapping relationship.

[0016] In a possible implementation, the mapping relationship model indicates that the geoelectric parameter and the physicochemical parameter are in a linear relationship, and accordingly, is represented by the following formula:

[0017] ρ=k*C+b;

[0018] Among them, ρ represents geoelectric parameters; C represents physical and chemical parameters; k represents the slope of the straight line; and b represents the intercept of the straight line.

[0019] In a possible implementation, the distance between two adjacent ground electrodes on the ground cable is a, and the distance between the installation position of the multi-parameter sensor and the ground cable is less than or equal to a.

[0020] In a possible implementation, the ground power cable is laid along the diagonal of the rectangular area where the potentially contaminated land is located, and the number of ground power electrodes connected in series on each ground power cable is greater than or equal to a preset number.

[0021] In a possible implementation, the geoelectric cable includes n geoelectric electrodes, and the distance between two adjacent geoelectric electrodes is a; the n geoelectric electrodes measure the geoelectric measuring points of layer I on a cross section formed by the geoelectric cable and perpendicular to the direction of the potentially contaminated land;

[0022] For the i-th layer of geoelectric measuring points, four geoelectric electrodes with an interval of i*a are determined to form a group of i-th layer of geoelectric electrode groups respectively; each group of i-th layer of geoelectric electrode groups includes: a current positive electrode, a voltage positive electrode, a voltage negative electrode, and a current negative electrode in the order of arrangement of the geoelectric electrodes, and the geoelectric measuring point corresponding to the i-th layer of geoelectric electrode group is located at the midpoint of the voltage positive electrode and the voltage negative electrode;

[0023] Accordingly,

[0024] The distance X between the jth geoelectric measuring point in the i-th layer and the first geoelectric electrode in the direction parallel to the geoelectric cable #i-j for:

[0025]

[0026] The distance Y between the jth geoelectric measuring point in the i-th layer of geoelectric measuring points and the first geoelectric electrode in the direction perpendicular to the geoelectric cable #i-j for:

[0027] Y #i-j =ia.

[0028] In a possible implementation, the two ends of the geoelectric cable are a closed end and a transmission end, respectively, and the transmission end is an end used to connect to the geoelectric measuring instrument; the minimum distance between the transmission end and the geoelectric electrode is greater than a preset distance, and the preset distance is determined based on capacitive coupling interference and electromagnetic coupling interference.

[0029] In a possible implementation, the grounding electrode includes a grounding conductive block and a sealing ring, and two ends of the grounding conductive block connected to the grounding cable are respectively wrapped with the sealing ring.

[0030] According to another aspect of the present disclosure, a real-time monitoring, early warning and data collection method for a potential contaminated land parcel is provided, which is used in the real-time monitoring, early warning and data collection system for the potential contaminated land parcel, and the method comprises:

[0031] Acquire the geoelectric parameters collected by the geoelectric measuring instrument and the physicochemical parameters collected by the multi-parameter measuring instrument in each collection cycle;

[0032] Determine a mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and the physicochemical parameters corresponding to each acquisition period;

[0033] Determining a geoelectric warning threshold of the geoelectric parameter based on the physicochemical warning threshold of the physicochemical parameter and the mapping relationship;

[0034] Based on the physicochemical warning threshold and the geoelectrical warning threshold, the potentially contaminated land is monitored and warned in real time.

[0035] According to another aspect of the present disclosure, a real-time monitoring, early warning and data collection device for a potentially contaminated land is provided, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to implement the above method when executing the instructions stored in the memory.

[0036] According to another aspect of the present disclosure, a non-volatile computer-readable storage medium is provided, on which computer program instructions are stored, wherein the computer program instructions implement the above method when executed by a processor.

[0037] According to another aspect of the present disclosure, a computer program product is provided, including a computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in a processor of an electronic device, the processor in the electronic device executes the above method.

[0038] The geoelectric parameters of the potential contaminated plots are collected through a geoelectric cable with multiple geoelectric electrodes in series; the multi-parameter sensor collects the physicochemical parameters of the potential contaminated plots; the geoelectric measuring instrument connected to the geoelectric cable obtains the geoelectric parameters; the multi-parameter measuring instrument connected to the multi-parameter sensor obtains the physicochemical parameters; the monitoring and early warning platform determines the mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and physicochemical parameters corresponding to each collection cycle; the geoelectric early warning threshold of the geoelectric parameters is determined based on the physicochemical early warning threshold of the physicochemical parameters and the mapping relationship; the potential contaminated plots are monitored and warned in real time based on the physicochemical early warning threshold and the geoelectric early warning threshold; the mapping relationship between the geoelectric parameters and the physicochemical parameters of the formation medium can be drawn in time, so that the potential contaminated plots can be monitored and warned in real time and dynamically throughout the process, solving the problem of being unable to realize real-time monitoring and early warning of the potential contaminated plots. In addition, a geoelectric measuring point profile measurement method is provided, which can obtain the surface information of the underground medium, make up for the defects of the single measuring point of traditional drilling, improve the monitoring range and accuracy, and reduce the monitoring cost.

[0039] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0041] Figure 1 A schematic diagram showing a real-time monitoring, early warning and data collection system for a potentially contaminated land parcel according to an embodiment of the present disclosure;

[0042] Figure 2 A schematic diagram showing a geoelectric electrode according to an embodiment of the present disclosure;

[0043] Figure 3 A schematic diagram showing a geoelectrical measurement point profile according to an embodiment of the present disclosure;

[0044] Figure 4 A schematic diagram showing the arrangement of a ground power cable and a multi-source sensor according to an embodiment of the present disclosure is shown;

[0045] Figure 5 A cross-sectional diagram showing changes in geoelectric parameters of a potentially contaminated plot from the 1st day to the 14th day according to an embodiment of the present disclosure;

[0046] Figure 6 A schematic diagram showing a mapping relationship between geoelectric parameters and pH according to an embodiment of the present disclosure;

[0047] Figure 7 A schematic diagram showing the construction of a real-time monitoring, early warning and data collection system for a potentially contaminated land plot according to an embodiment of the present disclosure;

[0048] Figure 8 A flow chart showing a method for real-time monitoring, early warning and data collection of a potentially contaminated land parcel according to an embodiment of the present disclosure;

[0049] Fig. 9 A block diagram showing a real-time monitoring, early warning and data collection device for a potentially contaminated land plot according to an embodiment of the present disclosure;

[0050] Fig.10 A block diagram of a real-time monitoring, early warning and data collection device for a potentially contaminated land plot according to another embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0051] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0052] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0053] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0054] Figure 1 A schematic diagram of a real-time monitoring, early warning and data collection system for a potentially contaminated land plot according to an embodiment of the present disclosure is shown. Figure 1 As shown, the system includes: a geoelectric cable 6 , a multi-parameter sensor 8 , a geoelectric measuring instrument 1 , a multi-parameter measuring instrument 4 and a monitoring and early warning platform 100 .

[0055] The geoelectric cable 6 is used to be laid in a potentially contaminated land to collect geoelectric parameters of the potentially contaminated land.

[0056] Among them, the potentially contaminated land refers to the land area that may be contaminated, or the land area that needs to be monitored in real time. Geoelectric parameters refer to a series of physical quantities that describe the electrical characteristics of the earth's interior. Exemplarily, geoelectric parameters include but are not limited to at least one of the following: conductivity, resistivity, polarizability, relaxation time, etc. This embodiment does not limit the implementation method of geoelectric parameters.

[0057] The geoelectric cable 6 is connected in series with a plurality of (n) geoelectric electrodes 11. The geoelectric electrode 11 refers to a conductor inserted into or in contact with the ground during geoelectric measurement, wherein n is a positive integer.

[0058] The method of connecting n ground electrodes 11 in series with the ground cable 6 includes: connecting the ground electrodes 11 between multiple segments of the ground cable 6. Figure 2 The grounding electrode 11 includes a grounding conductive block 14 and a sealing ring 15, and the two ends of the grounding conductive block 14 connected to the grounding cable 6 are respectively wrapped with the sealing ring 15. At this time, the grounding cable 6 includes multiple sub-cables, and two adjacent sub-cables are connected through the grounding conductive block 14, and the connected ports are wrapped with the sealing ring 15. In this way, the sealing between the grounding conductive block 14 and the sub-cable can be ensured, thereby protecting the grounding conductive block 14 and the grounding cable 6 to achieve a safe conductive connection. At the same time, after the grounding cable 6 is buried under the ground surface, the connected ports can be prevented from being eroded by soil particles or even liquids, which affects the connection between the grounding conductive block 14 and the sub-cables.

[0059] Optionally, the material of the ground conductive block 14 may be H62 brass, and the sealing ring 15 may be polyurethane; in other implementations, the ground conductive block 14 may be other conductive materials, and the sealing ring 15 may be other insulating sealing materials. This embodiment does not limit the implementation of the ground conductive block 14 and the sealing ring 15.

[0060] Exemplarily, the distances between two adjacent ground electrodes 11 among the n ground electrodes 11 are equal, and are both a. The value of a is determined based on the length of the ground cable 6 and the value of n. Exemplarily, the determination method of a is expressed by the following formula:

[0061] a=L / (n-1);

[0062] Wherein, L represents the length of the grounding cable 6 , and n represents the number of the grounding electrodes 11 .

[0063] The n geoelectric electrodes 11 measure the I-layer geoelectric measuring points 12 on the cross section formed by the geoelectric cable 6 and perpendicular to the direction of the potentially contaminated land. Where I is a positive integer. Each layer of geoelectric measuring points 12 includes J geoelectric measuring points 12, and J is a positive integer. J = n-3I, and J>0, that is, n-3I>0.

[0064] like Figure 3 The section shown is a section perpendicular to the contaminated land (i.e., perpendicular to the horizontal plane of the contaminated land) and passing through the location cable 6, wherein the geoelectric cable 6 extends in a direction parallel to the contaminated land. In this section, the geoelectric electrodes 11 on the geoelectric cable 6 perform measurements on the geoelectric measuring points 12 of each layer.

[0065] The geoelectric measuring point 12 refers to a specific location where geoelectric parameters are actually measured in geoelectric measurement, that is, the geoelectric parameters at the location of the geoelectric measuring point 12 are measured through the geoelectric electrode 11. In this embodiment, the coordinates of the geoelectric measuring point 12 are determined based on the geoelectric electrode 11. At each geoelectric measuring point 12, current injection and voltage measurement are performed through the geoelectric electrode 11, so as to obtain the resistivity value or other electrical parameters of the geoelectric measuring point 12 and obtain the geoelectric parameters.

[0066] Specifically, for the i-th layer of geoelectric measuring points 12, four geoelectric electrodes 11 with an interval of i*a are determined to form a group of i-th layer of geoelectric electrode groups; each group of i-th layer of geoelectric electrode groups includes, in the order of arrangement of the geoelectric electrodes 11: current positive electrode C + , voltage positive electrode P + , voltage negative electrode P - , and the negative current electrode C - , the geoelectric measuring point 12 corresponding to the i-th geoelectric electrode group is located at the voltage positive electrode P + and voltage negative electrode P - The midpoint of the current positive electrode C in each of the two adjacent groups of i-th layer geoelectric electrodes is i*a. + and the current negative electrode C -As a pair of current electrodes, used to input current into the ground; the voltage positive electrode P + , voltage negative electrode P - As a pair of voltage electrodes, they are used to measure voltage data, which can reflect the changes in geoelectric parameters such as underground resistivity, thereby inferring the underground geological structure and possible pollution.

[0067] Correspondingly, the distance X between the jth geoelectric measuring point in the i-th layer of geoelectric measuring points and the first geoelectric electrode 11 in the direction parallel to the geoelectric cable 6 is #i-j It is represented by the following formula, where j is a positive integer less than or equal to J:

[0068]

[0069] The distance Y between the jth geoelectric measuring point 12 in the i-th layer of geoelectric measuring points 12 and the first geoelectric electrode 11 in the direction perpendicular to the geoelectric cable 6 #i-j It is expressed by the following formula:

[0070] Y #i-j =ia.

[0071] refer to Figure 3 , a layer of geoelectric measuring points 12 is formed on the cross section formed by the geoelectric cable 6 and perpendicular to the potentially contaminated land, assuming that the direction parallel to the geoelectric cable 6 is the x-axis, the direction perpendicular to the geoelectric cable 6 is the y-axis, and the first geoelectric electrode 11 is the coordinate origin. The first geoelectric electrode 11 refers to any one of the geoelectric electrodes 11 near the two ends of the geoelectric cable 6, Figure 3 In the embodiment, the first geoelectric electrode 11 is the geoelectric electrode 11 (i.e., the first geoelectric electrode 11 is the geoelectric electrode 11 far away from the end of the geoelectric cable 6 connected to the geoelectric measuring instrument 1) Figure 3 The first grounding electrode 11) on the left side is taken as an example for explanation.

[0072] For the first layer (i=1) geoelectric measuring point 12, four geoelectric electrodes 11 (1, 2, 3, 4) with an interval of a constitute a group of geoelectric electrodes, wherein 2 and 3 of the geoelectric electrodes 11 are respectively the positive voltage electrodes P + , voltage negative electrode P - At this time, the midpoint between 2 and 3 in the geoelectric electrodes 11 is the x-axis coordinate X of the first (j=1) geoelectric measuring point #1-1 in the first layer. #1-1 , a is the y-axis coordinate Y of #1-1 #1-1 ;

[0073] Right now,

[0074] Next, four ground electrodes 11 (2, 3, 4, 5) with an interval of a constitute the next group of ground electrodes, wherein 3 and 4 of the ground electrodes 11 are respectively the voltage positive electrodes P+ , voltage negative electrode P - At this time, the midpoint between 3 and 4 in the geoelectric electrodes 11 is the x-axis coordinate X of the second (j=2) geoelectric measuring point #1-2 in the first layer. #1-2 , a is the y-axis coordinate Y of #1-2 #1-2 ;

[0075] Right now,

[0076] This cycle is repeated to obtain the x-axis coordinate X of the jth geoelectric measuring point #1-j in the first layer. #1-j for:

[0077]

[0078] In the case of j=J, since J=n-3I,

[0079] #1-j's y-axis coordinate Y #1-j for:

[0080] Y #1-j =a.

[0081] For the second layer (i=2) geoelectric measuring point 12, four geoelectric electrodes 11 (1, 3, 5, 7) with an interval of 2a constitute a group of geoelectric electrodes, wherein 3 and 5 of the geoelectric electrodes 11 are respectively the voltage positive electrodes P + , voltage negative electrode P - At this time, the midpoint between 3 and 5 in the geoelectric electrode 11 is the x-axis coordinate X of the first (j=1) geoelectric measuring point #2-1 in the second layer. #2-1 , 2a is the y-axis coordinate Y of #2-1 #2-1 ;

[0082] That is, X #2-1 =2·a+a=3a,Y #2-1 =2a;

[0083] Next, four ground electrodes 11 (3, 5, 7, 9) with an interval of 2a constitute the next group of ground electrodes, wherein 5 and 7 of the ground electrodes 11 are respectively the voltage positive electrodes P + , voltage negative electrode P - At this time, the midpoint between 5 and 7 in the geoelectric electrode 11 is the x-axis coordinate X of the second (j=2) electrical measuring point #2-2 in the second layer. #2-2 , 2a is the y-axis coordinate Y of #2-2 #2-2 ;

[0084] That is, X #2-2 =2·2·a+a=5a,Y #2-2 =2a.

[0085] This cycle is repeated to obtain the x-axis coordinate X of the jth geoelectric measuring point #2-2 in the second layer. #2-j for:

[0086]

[0087] #2-2's y-axis coordinate Y #2-j for:

[0088] Y #2-j =2a.

[0089] According to the above principle, a cycle is performed for each layer of geoelectric measuring points 12 to obtain the x-axis coordinate X of the j-th geoelectric measuring point #ij in the i-th layer. #i-j and the y-axis coordinate Y #i-j The calculation formula is:

[0090]

[0091] based on Figure 3 The schematic diagram of the geoelectric measuring point 12 shown in FIG. 1 is shown. Assuming a = 1.2 m, then 2a = 2.4 m, 3a = 3.6 m, 4a = 4.8 m, and 5a = 6 m. Taking the acquisition number #1-1 as an example, the geoelectric electrodes 11 No. 1 to No. 4 are C + , P + , P - , C - The distance between adjacent electrodes is 1.2 m. Therefore, if the No. 1 geoelectric electrode 11 is taken as the origin of the coordinate, the coordinate of the geoelectric measuring point 12 is the horizontal coordinate X #1-1 is the voltage electrode P + , P - The midpoint of #1-1 With C + , P + , P - , C - The spacing between adjacent electrodes is consistent, that is, X #1-1 =1.8m, Y #1-1 =1.2m.

[0092] In this embodiment, the two ends of the geoelectric cable 6 include a closed end 9 and a transmission end 10, and the transmission end 10 is an end for connecting to the geoelectric measuring instrument 1. Correspondingly, the closed end 9 is an end away from the geoelectric measuring instrument 1.

[0093] In order to prevent the distance between the geoelectric measuring instrument 1 and the geoelectric electrode 11 closest to the transmission end 10 from being too close, thereby causing the problem of capacitive coupling interference and / or electromagnetic coupling interference, illustratively, the minimum distance between the transmission end 10 and the geoelectric electrode 11 is greater than a preset distance, and the preset distance is determined based on the capacitive coupling interference and the electromagnetic coupling interference. That is, the preset distance makes the capacitive coupling interference and the electromagnetic coupling interference between the geoelectric measuring instrument 1 and the geoelectric electrode 11 closest to the transmission end 10 meet the preset expected requirements.

[0094] The minimum distance between the transmission end 10 and the geoelectric electrode 11 is the distance between the geoelectric electrode 11 closest to the transmission end 10 and the transmission end 10. Optionally, the minimum distance may be the distance between the end of the geoelectric electrode 11 closest to the transmission end 10, which is close to the geoelectric measuring instrument 1, and the transmission end 10; or, it may be the distance between the midpoint of the geoelectric electrode 11 closest to the transmission end 10 and the transmission end 10; or, it may be the distance between the end of the geoelectric electrode 11 closest to the transmission end 10, which is far from the geoelectric measuring instrument 1, and the transmission end 10. This embodiment does not limit the measurement method of the distance between the geoelectric electrode 11 and the transmission end 10.

[0095] For example, the preset distance is 5a, that is, the distance L between the ground electrode 11 closest to the transmission end 10 and the transmission end 10 n Need to meet L n >5a. In other embodiments, the preset distance may also be other values, and this embodiment does not limit the value of the preset distance.

[0096] Optionally, to avoid material loss and excessive resistance caused by an overly long end cable, the minimum distance between the closed end 9 and the ground electrode 11 is within a preset distance range. The minimum distance between the closed end 9 and the ground electrode 11 is the distance between the ground electrode 11 closest to the closed end 9 and the closed end 9. The distance is measured by referring to the distance measurement method between the ground electrode 11 and the transmission end 10 described above, and will not be described in detail in this embodiment.

[0097] For example, the preset distance range is ( a), at this time, the distance L1 between the ground electrode 11 closest to the closed end 9 and the closed end 9 must satisfy In other embodiments, the preset distance range may also be set in other ways, and this embodiment does not limit the value of the preset distance range.

[0098] Exemplarily, the ground-to-ground cables 6 are laid along the diagonal lines of the rectangular area where the potentially contaminated land is located, and the number of the ground-to-ground electrodes 11 connected in series on each ground-to-ground cable 6 is greater than or equal to a preset number.

[0099] The rectangular area where the potential contaminated land is located refers to the smallest rectangular area that can surround the potential contaminated land. At this time, if the length of the rectangular area is x and the width is y, the length of the ground cable 6 is at least

[0100] In this embodiment, by laying straight diagonal lines along the rectangular area where the potential contaminated land is located, the minimum number of geoelectric cables 6 can be used as much as possible to cover the measurement of geoelectric parameters of the entire site, which can simplify the system structure and save system construction costs.

[0101] In other implementations, the ground cable 6 may also be laid in parallel to the length or width of the rectangular area. This embodiment does not limit the laying method of the ground cable 6.

[0102] Exemplarily, the preset number is 10 or 20, and this embodiment does not limit the value of the preset number. Since the length of the ground-electric cable 6 is fixed by the size of the potentially contaminated land, in order to avoid the problem of too few electrodes, resulting in a small amount of data and poor monitoring accuracy, this embodiment sets the ground-electric electrodes 11 to be greater than or equal to the preset number, and the spacing between the ground-electric electrodes 11 is determined based on the length of the ground-electric cable 6 and the number of ground-electric electrodes 11, which can ensure that the amount of data of the geoelectric parameters collected by the ground-electric electrodes 11 meets the collection requirements.

[0103] like Figure 4 As shown, assuming that the rectangular area where the potential contaminated land is located has a length x=30m and a width y=23m, two ground cables 6 are laid in a straight line along the diagonal of the potential contaminated land, and the ground cables 6 are connected in series with n=32 ground electrodes 11. The total length of each ground cable 6 is designed to be 48.5m. The distance between the ground electrodes 11 is a=1.2m, the closed end 9 of the ground cable 6 is 1m away from the first ground electrode 11, the transmission end 10 is 10m away from the 32nd ground electrode 11, and the length from the first ground electrode to the 32nd ground electrode 11 is 37.2m. Figure 4 In the embodiment, the geoelectric electrode 11 close to the closed end 9 is taken as the first geoelectric electrode 11, and the geoelectric electrode 11 close to the transmission end 10 is taken as the last geoelectric electrode 11. In other embodiments, the numbering order of the first geoelectric electrode 11 and the last geoelectric electrode 11 can also be swapped. This embodiment does not limit the numbering method of the geoelectric electrodes 11.

[0104] Optionally, the ground power cable 6 is laid underground in a potentially contaminated plot, such as the ground power cable 6 is laid 10 cm below the ground; or, the ground power electrode 11 is wrapped with bentonite and directly coupled to the hardened ground; this embodiment does not limit the setting method of the ground power cable 6.

[0105] The multi-parameter sensor 8 is used to be set in a potential contaminated land to collect the physical and chemical parameters of the potential contaminated land.

[0106] The physicochemical parameters refer to data that can reflect the underground dielectric properties. The physicochemical parameters include but are not limited to at least one of the following: pollutant concentration, oxidation-reduction potential (ORP) data, pH data, dissolved oxygen (DO), groundwater conductivity, etc. This embodiment does not limit the types of physicochemical parameters.

[0107] The type of the multi-parameter sensor 8 is determined based on the type of the physicochemical parameters. For example, if the physicochemical parameters include pollutant concentrations, and the pollutants are heavy metals, the multi-parameter sensor 8 includes a heavy metal sensor to detect the concentration of heavy metals in potentially contaminated land. If the physicochemical parameters include pH data and / or DO data, the multi-parameter sensor 8 includes an electrochemical sensor. If the physicochemical parameters include ORP data, the multi-parameter sensor 8 includes an ORP sensor. If the physicochemical parameters include groundwater conductivity, the multi-parameter sensor 8 includes a conductivity sensor. This embodiment does not limit the implementation method of the multi-parameter sensor 8.

[0108] Exemplarily, in order to establish a coordinated change relationship between the physicochemical parameters measured by the multi-parameter measuring instrument 4 and the geoelectric parameters measured by the geoelectric measuring instrument 1, the setting position of the multi-parameter sensor 8 is determined based on the laying position of the geoelectric cable 6, so that the multi-parameter sensor 8 is set near the geoelectric cable 6. Exemplarily, the distance between the setting position of the multi-parameter sensor 8 and the geoelectric cable 6 is less than or equal to a.

[0109] For example: a=1.2 m, the average distance between the installation position of the multi-parameter sensor 8 and the ground cable 6 is 1 m, which is less than a.

[0110] In this embodiment, the multi-parameter measuring instrument 4 is connected to the multi-parameter sensor 8 via a conductive cable 7. In order to prevent the multi-parameter measuring instrument 4 and the multi-parameter sensor 8 from being too close to each other, thereby causing the problem of capacitive coupling interference and / or electromagnetic coupling interference, in one example, the distance between the conductive cable 7 and the multi-parameter sensor 8 is greater than a preset minimum distance value, which is determined based on the capacitive coupling interference and electromagnetic coupling interference between the conductive cable 7 and the multi-parameter sensor 8. That is, the minimum distance value makes the capacitive coupling interference and electromagnetic coupling interference between the conductive cable 7 and the multi-parameter sensor 8 meet the preset expected requirements.

[0111] Exemplarily, the minimum distance is 5a, that is, the distance between the multi-parameter measuring instrument 4 and the multi-parameter sensor 8 is greater than 5a.

[0112] The geoelectric measuring instrument 1 is connected to the geoelectric cable 6 so that the geoelectric measuring instrument 1 can obtain the geoelectric parameters collected by the geoelectric electrodes 11 on the geoelectric cable 6 .

[0113] Exemplarily, the geoelectrical measuring instrument 1 and the geoelectrical cable 6 are connected by threads, and mutually adaptable threaded interfaces are provided on the transmission ends 10 of the geoelectrical measuring instrument 1 and the geoelectrical cable 6. In other implementations, the geoelectrical measuring instrument 1 and the geoelectrical cable 6 may also be connected by other methods, and this embodiment does not limit the connection method between the geoelectrical measuring instrument 1 and the geoelectrical cable 6.

[0114] The geoelectric measuring instrument 1 obtains the geoelectric parameters collected by the geoelectric electrode 11 according to a preset collection cycle, and the period of the collection cycle is longer than the total measurement time of each geoelectric measuring point 12 in each geoelectric cable 6. Assuming that the measurement time of a single geoelectric measuring point 12 is 30s, the measurement time of a single measuring line is 30s*the number of geoelectric measuring points 12. At this time, the time for each geoelectric cable 6 to collect geoelectric parameters each time is 30s*the number of geoelectric measuring points 12, for example: specifically 0.5-1 hour. If the collection cycle is once a day, the collection cycle is longer than the time for each geoelectric cable 6 to collect geoelectric parameters each time.

[0115] The multi-parameter measuring instrument 4 is connected to the multi-parameter sensor 8 so that the multi-parameter measuring instrument 4 acquires the physicochemical parameters collected by the multi-parameter sensor 8 .

[0116] Exemplarily, the multi-parameter measuring instrument 4 and the multi-parameter sensor 8 are connected in a spirally wound conductive manner. This embodiment does not limit the connection method between the multi-parameter measuring instrument 4 and the multi-parameter sensor 8.

[0117] Optionally, the acquisition cycle of the multi-parameter measuring instrument 4 is synchronized with that of the geoelectric measuring instrument 1 , so as to obtain geoelectric parameters and physicochemical parameters corresponding to the same acquisition cycle. For example, the acquisition cycle of the multi-parameter measuring instrument 4 is also once a day, and is synchronized with that of the geoelectric measuring instrument 1 .

[0118] In one example, the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1 are arranged in a monitoring room 5, and two cable inlet and outlet ports 13 are provided at the bottom of the monitoring room 5, respectively extending the conductive cable 7 and the geoelectric cable 6 to the outside of the monitoring room 5, so as to be arranged in a potentially contaminated land. An uninterruptible power supply transformer 3 is also arranged in the monitoring room 5, and the input end of the uninterruptible power supply transformer 3 is connected to a 220V AC power supply, and the output end is respectively connected to the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1, so as to supply power to the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1.

[0119] The monitoring and early warning platform is respectively connected to the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1. In one example, a router 2 is also provided in the monitoring room 5, and the router 2 is respectively connected to the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1 through wires, and the router 2 and the geoelectric measuring instrument 1 are also connected through a network cable, so that the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1 are networked, and the collected geoelectric parameters and physicochemical parameters are transmitted to the remote monitoring and early warning platform through the Internet.

[0120] In this embodiment, the monitoring and early warning platform is used to obtain the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle; based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle, the mapping relationship between the geoelectric parameters and the physicochemical parameters is determined; based on the physicochemical early warning threshold of the physicochemical parameters and the mapping relationship, the geoelectric early warning threshold of the geoelectric parameters is determined; based on the physicochemical early warning threshold and the geoelectric early warning threshold, real-time monitoring and early warning of potential contaminated plots are performed.

[0121] In one example, after the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1 collect geoelectric parameters and physicochemical parameters, the collected parameters are uploaded to the monitoring and early warning platform through the router 2; or, the monitoring and early warning platform sends a parameter acquisition request to the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1, and the multi-parameter measuring instrument 4 and the geoelectric measuring instrument 1 send the collected geoelectric parameters and physicochemical parameters to the monitoring and early warning platform when the parameter acquisition request is obtained; this embodiment does not limit the way in which the monitoring and early warning platform obtains geoelectric parameters and physicochemical parameters.

[0122] In one example, based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle, a mapping relationship between the geoelectric parameters and the physicochemical parameters is determined, including: obtaining a mapping relationship model between the geoelectric parameters and the physicochemical parameters; based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle, determining model parameters in the mapping relationship model to obtain a mapping relationship.

[0123] Exemplarily, the mapping relationship model indicates that the geoelectric parameters and the physicochemical parameters are linearly related, and accordingly, it is expressed by the following formula:

[0124] ρ=k*C+b;

[0125] Wherein, ρ represents geoelectric parameters; C represents physical and chemical parameters; k represents the slope of the straight line; and b represents the intercept of the straight line. In this embodiment, k and b in the mapping relationship model can be determined based on the geoelectric parameters and physical and chemical parameters corresponding to each acquisition cycle to obtain a mapping relationship.

[0126] Since each geoelectric measuring point corresponds to a set of geoelectric parameters, the monitoring and early warning platform can determine the mapping relationship corresponding to each geoelectric measuring point based on the geoelectric parameters and physicochemical parameters corresponding to the geoelectric measuring point, thereby realizing real-time early warning of the geoelectric parameters of each geoelectric measuring point.

[0127] Assume that the materialized warning threshold is C 筛查值 , then according to the above mapping relationship, the geoelectric warning threshold ρ 预警阈值 = k*C 筛查值 + b. Afterwards, if the physical and chemical parameters obtained by the monitoring and early warning platform are greater than C 筛查值 , the first warning is issued if the geoelectric parameter exceeds ρ 预警阈值 , then a second warning is issued.

[0128] Optionally, the first warning and the second warning are the same or different, for example: the first warning is a light prompt, and the second warning is a light + voice prompt; for example: the first warning is a display of abnormal physical and chemical parameters; the second warning is a display of abnormal geoelectric parameters. This embodiment does not limit the implementation methods of the first warning and the second warning.

[0129] Optionally, the monitoring and early warning platform includes a display device, which can display the mapping relationship and the schematic diagram of the change of geoelectric parameters. Figure 5 The change information of geoelectric parameters on the profile shown is based on Figure 5 It can be seen that as the number of days increases, the geoelectric parameters near the pipelines of the potential contaminated plots gradually increase, indicating that there is a pollutant solute migration process caused by pipeline leakage in the potential contaminated plots. The mapping relationship constructed based on the geoelectric parameters and physicochemical parameters collected every day is referenced Figure 6 As shown, Figure 6 The mapping relationship shown is the mapping relationship between geoelectric parameters and pH data, and ρ=0.058*CpH+3.12. If pH>4.2 is defined as pipeline leakage, that is, the physicochemical warning threshold is 4.2, then based on the mapping relationship, the geoelectric warning threshold is 30Ω·m. The monitoring and early warning platform realizes real-time monitoring and early warning of the entire process of potential contaminated land based on the physicochemical warning threshold of 4.2 and the geoelectric warning threshold of 30Ω·m.

[0130] According to the above, reference Figure 7 The process of building a real-time monitoring, early warning and data collection system for potentially contaminated land in this application includes at least the following steps:

[0131] Step 71, design of ground power cable 6 and ground power electrode 11:

[0132] For example, a ground cable 6 is laid along the diagonal of the rectangular area where the potential contaminated land is located, and the length of the ground cable 6 is at least Among them, x is the length of the rectangular area, and y is the width of the rectangular area.

[0133] Step 72, design of multi-parameter sensor 8:

[0134] For example, the multi-parameter sensor 8 is set within a range of 2a with the grounding cable 6 as the center line, a length of L, and a width of 2a. In this way, the distance between the multi-parameter sensor 8 and the grounding cable 6 can be ensured to be less than a. The multi-parameter sensor 8 includes but is not limited to: ORP data, pH data, DO data, groundwater conductivity, etc.

[0135] Step 73, monitoring room 5 and equipment system construction:

[0136] For example, the ground-electric cable 6 is buried 10 cm underground, or the ground-electric electrode 11 is coupled to the ground surface by wrapping bentonite; the monitoring room 5 is equipped with a 220V AC power supply, the uninterruptible power supply transformer 3 is connected to the 220V AC power supply, and the uninterruptible power supply transformer 3 is connected to the router 2, the ground-electric measuring instrument 1, and the multi-parameter measuring instrument 4 to supply power to the router 2, the ground-electric measuring instrument 1, and the multi-parameter measuring instrument 4. The ground-electric cable 6 and the conductive cable 7 for connecting the multi-parameter sensor 8 are connected to the monitoring room 5 through the cable inlet and outlet ports 13 of the monitoring room 5, respectively.

[0137] Step 74, data acquisition array and acquisition cycle formulation:

[0138] For example, a data acquisition array is designed according to the number of geoelectric electrodes 11 and the profile where the geoelectric measuring points 12 are located, and the data acquisition time and cycle of the geoelectric measuring instrument 1 and the multi-parameter measuring instrument 4 are set.

[0139] Step 75, integration and visualization analysis of geoelectric parameters and physicochemical parameters:

[0140] Obtain the changing trends of the geoelectric parameters of the profile where the geoelectric measuring point 12 is located, as well as the changing trends of the physicochemical parameters, establish a mapping relationship based on the physicochemical parameters and the geoelectric parameters, and establish a geoelectric early warning threshold. Based on the changing information of the geoelectric parameters and the physicochemical parameters, realize the full process real-time monitoring and early warning of potential contaminated plots.

[0141] In summary, the real-time monitoring, early warning and data acquisition system for potentially contaminated plots provided in this embodiment collects geoelectric parameters of potentially contaminated plots through a geoelectric cable with multiple geoelectric electrodes connected in series; a multi-parameter sensor collects physicochemical parameters of potentially contaminated plots; a geoelectric measuring instrument connected to the geoelectric cable obtains geoelectric parameters; a multi-parameter measuring instrument connected to the multi-parameter sensor obtains physicochemical parameters; a monitoring and early warning platform determines the mapping relationship between geoelectric parameters and physicochemical parameters based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle; determines the geoelectric early warning threshold of geoelectric parameters based on the physicochemical early warning threshold of physicochemical parameters and the mapping relationship; performs real-time monitoring and early warning of potentially contaminated plots based on the physicochemical early warning threshold and the geoelectric early warning threshold; the mapping relationship between geoelectric parameters and physicochemical parameters of the formation medium can be drawn in time, so that real-time monitoring and dynamic early warning of the entire process can be performed on the potentially contaminated plots, solving the problem that real-time monitoring and early warning of potentially contaminated plots cannot be achieved.

[0142] In addition, a geoelectric measuring point profile measurement method is provided to obtain the surface information of the underground medium, which makes up for the defects of the single measuring point in traditional drilling, improves the monitoring range and accuracy, and reduces the monitoring cost.

[0143] Figure 8 A flowchart showing a method for real-time monitoring, early warning and data collection of a potentially contaminated land plot according to an embodiment of the present disclosure is shown. Figure 1 The monitoring and early warning platform 100 in the system shown in the figure is used as an example for explanation. Figure 8 As shown, the method includes:

[0144] Step 801, obtaining the geoelectric parameters collected by the geoelectric measuring instrument in each collection cycle and the physicochemical parameters collected by the multi-parameter measuring instrument;

[0145] Step 802, determining a mapping relationship between geoelectric parameters and physicochemical parameters based on geoelectric parameters and physicochemical parameters corresponding to each acquisition period;

[0146] Step 803, determining a geoelectric warning threshold of a geoelectric parameter based on the physicochemical warning threshold of the physicochemical parameter and the mapping relationship;

[0147] Step 804: Based on the physical and chemical warning threshold and the geoelectric warning threshold, real-time monitoring and warning are performed on the potentially contaminated land.

[0148] For relevant details, please refer to the above system embodiment.

[0149] The real-time monitoring, early warning and data collection method for potentially contaminated plots provided in this embodiment can perform full-process real-time monitoring and dynamic early warning for potentially contaminated plots by timely drawing the mapping relationship between the geoelectric parameters and the physicochemical parameters of the formation medium, thereby solving the problem of being unable to achieve real-time monitoring and early warning of potentially contaminated plots.

[0150] Fig. 9 A block diagram of a real-time monitoring, early warning and data collection device for a potentially contaminated land plot according to an embodiment of the present disclosure is shown. Figure 1 The monitoring and early warning platform 100 in the system shown is used as an example for explanation. The device comprises: a parameter acquisition module 910 , a relationship determination module 920 , a threshold determination module 930 and a monitoring and early warning module 940 .

[0151] The parameter acquisition module 910 is used to acquire the geoelectric parameters collected by the geoelectric measuring instrument and the physicochemical parameters collected by the multi-parameter measuring instrument in each acquisition cycle;

[0152] A relationship determination module 920, configured to determine a mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and the physicochemical parameters corresponding to each acquisition period;

[0153] A threshold determination module 930, configured to determine a geoelectric warning threshold of the geoelectric parameter based on the physicochemical warning threshold of the physicochemical parameter and the mapping relationship;

[0154] The monitoring and early warning module 940 is used to perform real-time monitoring and early warning on the potential contaminated land based on the physical and chemical early warning threshold and the geoelectrical early warning threshold.

[0155] For detailed description, please refer to the above embodiments.

[0156] In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to execute the method described in the above method embodiments. The specific implementation can refer to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0157] The embodiment of the present disclosure also provides a computer-readable storage medium on which computer program instructions are stored, and the computer program instructions implement the above method when executed by a processor. The computer-readable storage medium can be a volatile or non-volatile computer-readable storage medium.

[0158] An embodiment of the present disclosure further proposes an electronic device, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to implement the above method when executing the instructions stored in the memory.

[0159] The embodiments of the present disclosure also provide a computer program product, including a computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in a processor of an electronic device, the processor in the electronic device executes the above method.

[0160] Fig.10 1 is a block diagram of a real-time monitoring, early warning and data collection device 1900 for a potential contaminated land according to an exemplary embodiment. For example, the device 1900 can be provided as a server or a terminal device. Fig.10 , the apparatus 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions, such as an application, that can be executed by the processing component 1922. The application stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above method.

[0161] The device 1900 may also include a power supply component 1926 configured to perform power management of the device 1900, a wired or wireless network interface 1950 configured to connect the device 1900 to a network, and an input / output interface 1958 (I / O interface). The device 1900 may operate based on an operating system stored in the memory 1932, such as Windows Server 2000. TM , MacOS X TM , Unix TM ,Linux TM , FreeBSD TM or similar.

[0162] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 1932 including computer program instructions, which can be executed by the processing component 1922 of the device 1900 to perform the above method.

[0163] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A real-time monitoring, early warning and data collection system for potentially contaminated land, characterized in that: The system comprises: A geoelectric cable having a plurality of geoelectric electrodes connected in series is used for laying in a potentially contaminated land to collect geoelectric parameters of the potentially contaminated land; A multi-parameter sensor is used to be arranged on the potential contaminated land to collect the physical and chemical parameters of the potential contaminated land; A geoelectric measuring instrument connected to the geoelectric cable, used to obtain the geoelectric parameters; A multi-parameter measuring instrument connected to the multi-parameter sensor, used to obtain the physicochemical parameters; A monitoring and early warning platform is used to obtain the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle; based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition cycle, determine the mapping relationship between the geoelectric parameters and the physicochemical parameters; based on the physicochemical early warning threshold of the physicochemical parameters and the mapping relationship, determine the geoelectric early warning threshold of the geoelectric parameters; based on the physicochemical early warning threshold and the geoelectric early warning threshold, perform real-time monitoring and early warning of the potential contaminated land.

2. The system according to claim 1, characterized in that The determining of the mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and the physicochemical parameters corresponding to each acquisition period includes: Acquire a mapping relationship model between the geoelectric parameters and the physicochemical parameters; Based on the geoelectric parameters and physicochemical parameters corresponding to each acquisition period, the model parameters in the mapping relationship model are determined to obtain the mapping relationship.

3. The system according to claim 2, characterized in that The mapping relationship model indicates that the geoelectric parameter and the physicochemical parameter are in a linear relationship, and accordingly, is expressed by the following formula: ρ=k*C+b; Among them, ρ represents geoelectric parameters; C represents physical and chemical parameters; k represents the slope of the straight line; and b represents the intercept of the straight line.

4. The system according to claim 1, characterized in that The distance between two adjacent ground electrodes on the ground cable is a, and the distance between the setting position of the multi-parameter sensor and the ground cable is less than or equal to a.

5. The system according to claim 1, characterized in that The ground power cable is laid along the diagonal of the rectangular area where the potential contaminated land is located, and the number of ground power electrodes connected in series on each ground power cable is greater than or equal to a preset number.

6. The system according to claim 1, characterized in that The geoelectric cable comprises n geoelectric electrodes, and the distance between two adjacent geoelectric electrodes is a; the n geoelectric electrodes measure the geoelectric measuring points of layer I on a cross section formed by the geoelectric cable and perpendicular to the direction of the potentially contaminated land; For the i-th layer of geoelectric measuring points, four geoelectric electrodes with an interval of i*a are determined to form a group of i-th layer of geoelectric electrode groups; Each i-th layer of geoelectric electrode groups includes, in order of arrangement of the geoelectric electrodes: a current positive electrode, a voltage positive electrode, a voltage negative electrode, and a current negative electrode, and the geoelectric measuring point corresponding to the i-th layer of geoelectric electrode groups is located at the midpoint of the voltage positive electrode and the voltage negative electrode; Accordingly, The distance X between the jth geoelectric measuring point in the i-th layer and the first geoelectric electrode in the direction parallel to the geoelectric cable #i-j for: The distance Y between the jth geoelectric measuring point in the i-th layer of geoelectric measuring points and the first geoelectric electrode in the direction perpendicular to the geoelectric cable #i-j for: Y #i-j =it。 7. The system according to claim 1, characterized in that The two ends of the geoelectric cable are respectively a closed end and a transmission end, and the transmission end is an end used to connect to the geoelectric measuring instrument; the minimum distance between the transmission end and the geoelectric electrode is greater than a preset distance, and the preset distance is determined based on capacitive coupling interference and electromagnetic coupling interference.

8. The system according to any one of claims 1 to 7, characterized in that: The grounding electrode comprises a grounding conductive block and a sealing ring, and two ends of the grounding conductive block connected to the grounding cable are respectively wrapped with the sealing ring.

9. A real-time monitoring, early warning and data collection method for potentially contaminated land, characterized in that: In the real-time monitoring, early warning and data acquisition system for a potentially contaminated land plot as described in any one of claims 1 to 8, the method comprises: Acquire the geoelectric parameters collected by the geoelectric measuring instrument and the physicochemical parameters collected by the multi-parameter measuring instrument in each collection cycle; Determine a mapping relationship between the geoelectric parameters and the physicochemical parameters based on the geoelectric parameters and the physicochemical parameters corresponding to each acquisition period; Determining a geoelectric warning threshold of the geoelectric parameter based on the physicochemical warning threshold of the physicochemical parameter and the mapping relationship; Based on the physicochemical warning threshold and the geoelectrical warning threshold, the potentially contaminated land is monitored and warned in real time.

10. A real-time monitoring, early warning and data collection device for potentially contaminated land, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to implement the method of claim 9 when executing the instructions stored in the memory.

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