Apparatus, method, medium and device for monitoring underground flow field based on resistivity anisotropy

Abstract

This invention relates to the field of geophysical exploration technology, and more particularly to a device, method, medium, and equipment for monitoring anisotropic groundwater flow fields with apparent resistivity. The anisotropic groundwater flow field monitoring device includes a power supply module, an electrode module, a voltage measurement module, and a control module. This invention uses a common measuring electrode at a measuring point and several directional measuring electrodes evenly arranged along a semi-circular arc centered on the common measuring electrode to simultaneously measure voltage values ​​in different directions. The control module processes the data to obtain apparent resistivity information in multiple directions. Furthermore, by collecting anisotropic data of apparent resistivity at various measuring points within the surface survey area and processing and analyzing the data in real time, the distribution of the degree of anisotropy of apparent resistivity in the survey area can be obtained, and the direction information of the most significant anisotropy can be acquired, thereby enabling the monitoring and assessment of groundwater flow field conditions.

Description

Technical Field

[0001] This invention relates to the field of geophysical exploration technology, and in particular to a device, method, medium, and equipment for monitoring anisotropic underground flow fields with apparent resistivity. Background Technology

[0002] In the process of groundwater pollution prevention and remediation, it is also necessary to accurately detect the diffusion direction, speed and range of pollution plumes (such as tailings dam leakage and landfill leachate) to carry out prevention and control. There is also a wide range of groundwater flow field detection applications in environmental and engineering fields such as seawater / saltwater intrusion monitoring, seepage detection of water conservancy projects such as dikes, and landslide and ground subsidence monitoring.

[0003] Currently, conventional methods for detecting groundwater and pore water flow direction mainly include direct methods such as borehole sampling, pumping / dispersion in-situ tests, and tracer testing, as well as geophysical methods such as the natural electric field method, charging method, and resistivity method. Geophysical methods, due to their advantages of speed, non-destructive testing, and large-scale detection, have become important tools for studying groundwater flow fields. However, the complexity of underground media structure and properties, and the existence of large-pore non-Darcy flow, further exacerbate the problem of multiple solutions in the inversion and interpretation of geophysical observation data. Groundwater flow drives the directional transport and distribution of conductive ions or particles in the medium, thus creating macroscopic differences in conductivity direction, exhibiting apparent resistivity anisotropy that can be observed at the surface. This resistivity anisotropy caused by pore fluids differs significantly from the inherent resistivity anisotropy of underground media caused by stratification and fractures in two aspects. First, fluid-induced anisotropy is correlated with the fluid flow direction; generally, the anisotropy difference is greatest along the flow direction and perpendicular to the flow direction. Secondly, fluid-induced anisotropy is easily altered by changes in fluid flow, unlike the inherent anisotropy caused by the orientation of bedding fractures, which possesses long-term stability. Therefore, changes in apparent resistivity anisotropy during long-term observation are a direct response to the groundwater flow field and are less susceptible to interference from other factors such as medium properties. By observing anisotropic changes, groundwater flow field conditions can be intuitively analyzed, enabling efficient groundwater flow field monitoring and improving the reliability of geophysical observation data inversion and interpretation.

[0004] Current technologies only consider the inherent resistivity anisotropy of underground media caused by stratification and fractures, neglecting the resistivity anisotropy resulting from dynamic changes in pore fluids. Existing resistivity anisotropy measurements typically employ a set of orthogonal electrodes, resulting in fixed resistivity anisotropy along orthogonal directions. When the direction of groundwater flow cannot be determined at the surface, it cannot be guaranteed that the deployed electrodes will be parallel (or perpendicular) to the flow direction, failing to capture the most significant resistivity anisotropy information. Monitoring fluid dynamics requires information on the direction of the most significant anisotropy, which current technologies struggle to provide. Existing tensor observation methods for resistivity testing require multiple power supply points in the measurement area, increasing the difficulty of subsequent data processing and interpretation, and the multi-point power supply approach is also inconvenient for long-term monitoring operations.

[0005] Therefore, it is necessary to provide a new device, method, medium, and equipment for monitoring underground flow fields with apparent resistivity anisotropy to solve the above-mentioned technical problems. Summary of the Invention

[0006] The main objective of this invention is to provide a device, method, medium, and equipment for monitoring underground flow fields with apparent resistivity anisotropy, aiming to solve the problem that existing devices cannot obtain the most significant directional information of anisotropy.

[0007] To achieve the above objectives, the present invention proposes an apparent resistivity anisotropic underground flow field monitoring device, comprising a power supply module, an electrode module, a voltage measurement module, and a control module. The power supply module is grounded. The electrode module includes a common measuring electrode disposed at the measuring point and several directional measuring electrodes arranged uniformly along a semi-circular arc centered on the common measuring electrode. The voltage measurement module is electrically connected to each of the directional measuring electrodes to measure the voltage values ​​corresponding to the measuring electrodes in different directions. The control module is communicatively connected to the voltage measurement module and can calculate the significant resistivity anisotropy coefficient and the dominant conductivity vector reflecting the dynamic state of the underground flow field based on the received voltage value data.

[0008] Optionally, the measuring electrodes in each direction are flexibly connected to the ground surface; Optionally, there are multiple electrode modules, each electrode module is set up in a one-to-one correspondence with a measurement point, and the common measurement electrodes are arranged in a grid shape.

[0009] Optionally, the orientation measuring electrodes corresponding to each of the common measuring electrodes are arranged in the same direction.

[0010] In addition, the present invention also provides a method for monitoring anisotropic subsurface flow fields with apparent resistivity, which uses the anisotropic subsurface flow field monitoring device with apparent resistivity as described above to monitor the subsurface flow field, and includes the following steps: S1: Deploy an anisotropic underground flow field monitoring device with apparent resistivity to form a stable DC electric field and a distributed wireless measurement network consisting of several electrode modules corresponding to the measurement points within the measurement area; S2: Continuously collect time-series data of voltage values ​​in different directions at the measurement points within the measurement area using a distributed wireless measurement network and voltage measurement module; S3: The control module calculates the apparent resistivity of the measuring point in different directions based on the timing data of the voltage values ​​in different directions at the measuring point; S4: The control module calculates the significant resistivity anisotropy coefficient and the dominant conductivity vector based on the maximum and minimum values ​​of apparent resistivity in different directions, and further generates a plane contour map of the significant resistivity anisotropy coefficient and a distribution map of the dominant conductivity vector at different times that can reflect the dynamic situation of the underground flow field.

[0011] Optionally, S1 includes: A common measuring electrode and several directional measuring electrodes are set at the measuring point, arranged uniformly along a semi-circular arc centered on the common measuring electrode. Connect the measuring electrodes N in each direction to the voltage measurement module respectively; A power supply module is deployed to establish a stable DC electric field within the measurement area. The power supply module includes a power supply device, a power supply electrode A, and a power supply electrode B. Specifically, power supply electrode A and power supply electrode B are respectively arranged on both sides of the measurement area. Power supply electrode A is set adjacent to the measurement area, and power supply electrode B is set at infinity within the measurement area. The power supply device is used to send a regulated DC signal through power supply electrode A and power supply electrode B to establish a stable DC electric field within the measurement area.

[0012] Optionally, in step S3, the specific calculation formula for the apparent resistivity at each measuring point is as follows: ; in: This refers to the number of the direction measuring electrode. For the measuring point Measurement electrodes in each direction Apparent resistivity in the direction of the location; For device coefficients, M is the common measurement electrode. For the first Measurement electrodes in each direction, AM, , These respectively represent the connection between power supply electrode A and common measurement electrode M, and between power supply electrode A and the first... Between the measuring electrodes in each direction, and between the common measuring electrode and the first... The distance between the measuring electrodes is measured in each direction; The supply current for the power supply equipment.

[0013] Optionally, S4 includes: Based on the maximum value of apparent resistivity in different directions at the measuring point and minimum value The significant resistivity anisotropy coefficient was calculated. The specific formula is as follows: ; Minimum value The dominant conductivity vector at the measuring point is defined by its corresponding direction. Based on the significant resistivity anisotropy coefficient and dominant conductance vector at different times, a plane contour map of the significant resistivity anisotropy coefficient and a distribution map of the dominant conductance vector are generated, respectively.

[0014] The present invention also provides a readable storage medium storing computer program instructions thereon, which, when executed by a processor, implement the apparent resistivity anisotropic underground flow field monitoring method as described above.

[0015] The present invention also provides an electronic device, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, wherein the computer program instructions are executed by the processor to perform the apparent resistivity anisotropic underground flow field monitoring method as described above.

[0016] The technical solution of this invention can simultaneously measure voltage values ​​in different directions using a common measuring electrode at a measuring point and several directional measuring electrodes arranged uniformly along a semi-circular arc centered on the common measuring electrode. The data is then processed by a control module to obtain apparent resistivity information in multiple directions (0~180 degrees without blind spots). Furthermore, by collecting apparent resistivity anisotropy data from various measuring points within the surface survey area and processing and analyzing the data in real time, the distribution of apparent resistivity anisotropy in the survey area can be obtained, and the direction information with the most significant anisotropy can be acquired, thereby enabling the monitoring and evaluation of groundwater flow field conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the layout of the apparent resistivity anisotropic underground flow field monitoring device in Embodiment 1 of the present invention; Figure 2 This is a flowchart illustrating the method for monitoring anisotropic underground flow fields with apparent resistivity in Embodiment 2 of the present invention. Figure 3 This is a schematic diagram of the electrode module arrangement in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the arrangement of measuring points within the measuring area in Embodiment 2 of the present invention; Figure 5 In Embodiment 2 of the present invention Contour map of the significant resistivity anisotropy coefficient in the test area at time t; Figure 6 In Embodiment 2 of the present invention Contour map of the significant resistivity anisotropy coefficient in the test area at time t; Figure 7 In Embodiment 2 of the present invention Planar distribution map of the dominant conductance vector in the test area at a given time; Figure 8 In Embodiment 2 of the present invention Planar distribution map of dominant conductance vector in the measurement area at any given time.

[0019] Explanation of icon numbers: 1 Power supply module, 2 Common measuring electrode, 3 Direction measuring electrode, 4 Measurement area.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0026] This invention proposes a device, method, medium, and equipment for monitoring underground flow fields with apparent resistivity anisotropy, aiming to solve the problem that existing devices cannot obtain the most significant directional information of anisotropy.

[0027] Example 1: See Figure 1 This embodiment provides a subsurface flow field monitoring device with apparent resistivity anisotropy, including a power supply module 1, an electrode module, a voltage measurement module, a wireless communication module, and a control module. The power supply module 1 is grounded. The electrode module includes a common measuring electrode 2 disposed at a measuring point and several directional measuring electrodes 3 arranged uniformly along a semi-circular arc centered on the common measuring electrode 2. The voltage measurement module is electrically connected to each of the directional measuring electrodes 3 to measure the voltage values ​​corresponding to the different directional measuring electrodes 3. The wireless communication module is communicatively connected to both the voltage measurement module and the control module to transmit data between the voltage measurement module and the control module. The control module can calculate the significant resistivity anisotropy coefficient and the dominant conductivity vector reflecting the dynamics of the subsurface flow field based on the received voltage value data.

[0028] Driven by pressure, pore water in the underground medium flows directionally along the dominant path. The water flow carries dissolved ions with it, causing these conductive ions to form a higher concentration gradient or connectivity along the flow direction, resulting in a decrease in resistivity along the flow direction. This resistivity anisotropy caused by water flow will manifest as lower resistivity directions in direct current resistivity exploration, indicating the dominant flow direction of groundwater or the extension direction of high-permeability channels. Furthermore, the greater the water flow velocity and the more significant the difference in ion concentration, the more pronounced the resistivity anisotropy will typically be. This embodiment uses a common measuring electrode 2 at the measuring point and several directional measuring electrodes 3 arranged uniformly along a semi-circular arc centered on the common measuring electrode 2 to simultaneously measure voltage values ​​in different directions. The data is then processed by the control module to obtain apparent resistivity information in multiple directions (0~180 degrees without blind spots). The direction corresponding to the minimum apparent resistivity value can directly indicate the direction of the water flow field. Furthermore, by calculating the significant resistivity anisotropy coefficient of each measuring point in the surface measuring area 4 and processing and analyzing the data in real time, the distribution of the degree of apparent resistivity anisotropy in measuring area 4 can be obtained, and the direction information of the most significant anisotropy can be obtained, thereby realizing the monitoring and evaluation of the groundwater flow field.

[0029] This embodiment also includes a wireless communication module, which is communicatively connected to both the voltage measurement module and the control module, and is used to transmit data between the voltage measurement module and the control module.

[0030] Among them, the measuring electrodes 3 in each direction are flexibly connected to the ground surface, so as to adjust the setting distance and angle of the measuring electrodes 3 according to the actual situation, thus getting rid of the cable restriction and realizing the large-scale arbitrary measurement network layout.

[0031] The number of electrode modules is multiple, and each electrode module is set up in a one-to-one correspondence with a measuring point. The common measuring electrodes 2 are arranged in a grid shape. The measuring points can be easily arranged into a rectangular or rhomboid network, or even a measuring network of any grid shape, according to the spacing required by the observation task, so as to realize the all-round monitoring of the groundwater flow field in the measuring area 4.

[0032] The orientation of the directional measuring electrodes 3 corresponding to each of the common measuring electrodes 2 is the same to facilitate subsequent data processing. The voltage measurement module synchronously and independently collects the significant resistivity anisotropy coefficient and dominant conductivity vector at the measuring points according to a unified clock cycle set by the system, and transmits this data back to the remote data signal receiving and control equipment in real time. Based on the collected data from measuring area 4, it is easy to plot the distribution maps of the "significant resistivity anisotropy coefficient" and the "dominant conductivity vector" at different times in measuring area 4. The spatiotemporal evolution information of the "significant resistivity anisotropy coefficient" and the "dominant conductivity vector" can intuitively reflect the dynamic situation of the underground flow field, thereby realizing dynamic monitoring of the underground flow field.

[0033] Example 2: See Figure 2 This embodiment provides a method for monitoring anisotropic subsurface flow fields with apparent resistivity, including the design of anisotropic resistivity measurement network (i.e., distributed wireless measurement network design), the arrangement of multiple voltage measurement nodes, the arrangement of transmitters and power supply electrodes (power supply equipment arrangement), program-controlled data acquisition of the measurement network, and the processing and analysis of observation data. The method uses the anisotropic subsurface flow field monitoring device described above to monitor the subsurface flow field, specifically including the following steps: S1: Deploy an anisotropic underground flow field monitoring device with apparent resistivity to form a stable DC electric field and a distributed wireless measurement network consisting of several electrode modules corresponding to the measurement points within the measurement area 4. S1 includes: Establishing a monitoring network in the target area according to specific monitoring needs such as hydrological surveys, seepage, or pollution transport mainly involves designing and determining the specific coordinate locations of each monitoring point within the network. Taking a regular monitoring network as an example, refer to... Figure 4 In the diagram, X (m) represents the position of the measuring point along the X-axis (east-west direction), and Y (m) represents the position of the measuring point along the Y-axis (north-south direction). Seven east-west oriented measuring lines are designed within measuring area 4, with a line spacing of 15 m. Each measuring line contains 16 measuring points, spaced 10 m apart. A rectangular grid measuring network is constructed, with each grid cell measuring 15 m north-south and 10 m east-west, for a total network area of ​​90 m × 150 m.

[0034] A common measuring electrode 2 and several directional measuring electrodes 3, arranged evenly along a semi-circular arc centered on the common measuring electrode 2, are set up at each measuring point. Specifically, distributed wireless multi-channel voltage measurement nodes are deployed within the measuring area 4 according to the locations of each measuring point in the designed measuring network. A node common measuring electrode 2 is arranged at each measuring point. See [link / reference] Figure 3 In this embodiment, seven directional measuring electrodes 3 (N1, N2, N3, N4, N5, N6, N7) are arranged clockwise from due west, with an angle of 30° between each electrode. The electrode distance between each directional measuring electrode 3 and the common measuring electrode 2 is set to 5 m. The distributed wireless multi-channel voltage measurement nodes at all measuring points within the measurement network are arranged in the same manner, ensuring that all electrodes are well grounded, with specific requirements the same as conventional electrical resistivity tomography.

[0035] Connect the measuring electrodes 3 in each direction to the voltage measuring module respectively; A power supply module 1 is arranged to establish a stable DC electric field within the measurement area 4. The power supply module 1 includes a power supply device, a power supply electrode A, and a power supply electrode B. Specifically, power supply electrode A and power supply electrode B are arranged on both sides of the measurement area 4, with power supply electrode A adjacent to the measurement area 4 and power supply electrode B located at infinity in the measurement area 4. The power supply device sends a regulated DC signal through power supply electrode A and power supply electrode B to establish a stable DC electric field within the measurement area 4.

[0036] This embodiment uses a power supply device (a transmitter of a conventional DC electrical resistivity tomography instrument) to transmit the power supply current. Power supply electrode A is located on the west side of survey area 4, and power supply electrode B is located on the east side of survey area 4, at a distance of 4800 m from the survey area, to meet the "infinity" requirement of electrical resistivity tomography. Ensure that all electrodes are properly grounded, with specific requirements the same as for conventional electrical resistivity tomography. Adjust the transmission voltage to ensure that the transmission current is stable and not less than 200 mA.

[0037] S2: The distributed wireless measurement network and voltage measurement module are used to continuously collect the time sequence data of voltage values ​​in different directions at the measurement points in the measurement area 4; In this embodiment, all measurement nodes (common measurement electrode 2 and direction measurement electrode 3), transmitters, and power supply electrodes at all measurement points are installed and debugged. After the transmitter's power supply current stabilizes, the control parameters sent by the control module can be received remotely via the wireless communication module's data signal, and all measurement nodes can be started to perform synchronous measurements. This embodiment sets up synchronous observation once every hour, and each measurement node temporarily stores the latest seven sets of voltage data. For example, the measurement data of node j at time t can be represented as... ( ), and They are nodes exist The voltage between the seven directional electrodes and the common electrode is measured at any given time. After each synchronous measurement is completed, the control module sequentially receives the observation data from each node using a polling method. Once all node data has been received, the next round of data acquisition can be initiated.

[0038] S3: The control module calculates the apparent resistivity of the measuring point in different directions based on the timing data of the voltage values ​​in different directions at the measuring point; In S3, the specific calculation formula for the apparent resistivity at each measuring point is as follows: ; in: This is the number for direction measuring electrode 3. For the measuring point The apparent resistivity of electrode 3 is measured in one direction. For device coefficients, M is the common measuring electrode 2. For the first Three measuring electrodes in each direction, AM, , These respectively represent the connection between power supply electrode A and common measurement electrode 2, and between power supply electrode A and the first... Between each directional measuring electrode 3, and between the common measuring electrode 2 and the first... The distance between electrodes 3 in each direction is measured; The supply current for the power supply equipment.

[0039] S4: The control module calculates the significant resistivity anisotropy coefficient and the dominant conductivity vector based on the maximum and minimum values ​​of apparent resistivity in different directions, and further generates a plane contour map of the significant resistivity anisotropy coefficient and a distribution map of the dominant conductivity vector at different times that can reflect the dynamic situation of the underground flow field.

[0040] S4 includes: Based on the maximum value of apparent resistivity in different directions at the measuring point and minimum value The significant resistivity anisotropy coefficient was calculated. The specific formula is as follows: ; Minimum value The dominant conductivity vector at the measuring point is defined by its corresponding direction. Based on the significant resistivity anisotropy coefficient and dominant conductance vector at different times, a plane contour map of the significant resistivity anisotropy coefficient and a distribution map of the dominant conductance vector are generated, respectively.

[0041] See Figure 5 for Contour map of the significant resistivity anisotropy coefficient in test area 4 at time t; Figure 6 for Contour map of the significant resistivity anisotropy coefficient in test area 4 at time t; Figure 7 for Planar distribution diagram of dominant conductance vector in test area 4 at the given time; Figure 8 for Planar distribution map of dominant conductance vector in measurement area 4 at time of measurement. Figures 5 to 8 It can intuitively reflect the underground flow field in survey area 4. Combined with the observation results at different times, it can intuitively obtain the dynamic migration and diffusion of seepage or leakage in survey area 4.

[0042] This embodiment has the following beneficial effects: (1) Conventional apparent resistivity observation equipment is limited by cables in field operations and cannot be deployed in large-scale arbitrary measurement networks for long-term monitoring. This embodiment uses a measurement network composed of distributed measurement nodes to get rid of cable limitations, which can realize the deployment of large-scale arbitrary measurement networks, making it more convenient for long-term monitoring operations in the field, especially under complex terrain conditions, and greatly improving field work efficiency.

[0043] (2) Conventional electrical resistivity exploration methods can generally only provide apparent resistivity data, which is inconvenient for conducting apparent resistivity anisotropy tests, and cannot provide information on the dominant conductivity direction in survey area 4. The significant resistivity anisotropy coefficient and dominant conductivity direction in this embodiment can intuitively reflect the spatial variation of the underground flow field, providing richer observation information for monitoring and analysis.

[0044] (3) Conventional electrical exploration methods are limited by equipment and devices, making it difficult to carry out continuous high-frequency time-series data acquisition. In particular, the observation method of measuring each measuring point sequentially by a single set of observation instruments cannot meet the requirement of synchronous measurement at each measuring point. In this embodiment, once the measurement network composed of distributed measurement nodes is set up, data can be collected synchronously under a uniformly set clock cycle, and each measuring point can strictly synchronously collect high-quality time-series observation data.

[0045] (4) The distributed wireless measurement network of this embodiment can automatically collect apparent resistivity data, apparent resistivity anisotropy data and dominant conductance vector data in different directions of the measurement area 4 at high frequency. The information in both time and space dimensions is richer. The richer observation data can greatly improve the reliability of data analysis and interpretation, and realize more accurate and reliable real-time monitoring.

[0046] (5) Distributed wireless monitoring networks can be deployed in areas requiring hydrological monitoring to detect groundwater and pore water flow direction and draw regional groundwater flow field maps. They can also be deployed around important water conservancy facilities such as dams and reservoirs to conduct long-term seepage monitoring and ensure the safety of the facilities. Furthermore, they can be deployed in key coastal areas to monitor seawater intrusion. The real-time monitoring and collection of apparent resistivity anisotropy data can accurately reflect the spatial distribution characteristics and temporal variation trends of the groundwater flow field in monitoring area 4, and promptly identify possible seepage, leakage, and their migration direction and range in monitoring area 4, thereby achieving early warning, forecasting, and disaster prevention and mitigation.

[0047] Example 3: This embodiment includes a readable storage medium storing computer program instructions, which, when executed by a processor, implement the apparent resistivity anisotropic underground flow field monitoring method as described above.

[0048] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0049] Example 4: This embodiment includes an electronic device, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, wherein the computer program instructions are executed by the processor to perform the apparent resistivity anisotropic underground flow field monitoring method as described above.

[0050] For example, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the electronic device.

[0051] The electronic device can be a mobile phone, desktop computer, laptop, handheld computer, cloud server, or other computing device. The electronic device may include, but is not limited to, processors and memory. For example, the electronic device may also include input / output devices, network access devices, buses, etc.

[0052] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the electronic device, connecting all parts of the electronic device via various interfaces and lines.

[0053] The memory can be used to store the computer program and / or modules. The processor implements the computer program by running or executing the computer program and / or modules stored in the memory, and by calling data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital card (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0054] Wherein, if the modules / units integrated in the electronic device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the protection scope of the present invention.

Claims

1. A monitoring device for anisotropic underground flow field with apparent resistivity, characterized in that, The system includes a power supply module (1), an electrode module, a voltage measurement module, and a control module. The power supply module (1) is grounded. The electrode module includes a common measuring electrode (2) located at the measuring point and several directional measuring electrodes (3) arranged uniformly along a semi-circular arc centered on the common measuring electrode (2). The voltage measurement module is electrically connected to each of the directional measuring electrodes (3) to measure the voltage values ​​corresponding to the different directional measuring electrodes (3). The control module is communicatively connected to the voltage measurement module and can calculate the significant resistivity anisotropy coefficient and the dominant conductivity vector, which reflect the dynamic state of the underground flow field, based on the received voltage value data.

2. The apparent resistivity anisotropic underground flow field monitoring device according to claim 1, characterized in that, The measuring electrodes (3) in each direction are flexibly connected to the ground surface.

3. The apparent resistivity anisotropic underground flow field monitoring device according to claim 2, characterized in that, The number of electrode modules is multiple, and each electrode module is set up in a one-to-one correspondence with a measurement point, and each of the common measurement electrodes (2) is arranged in a grid shape.

4. The apparent resistivity anisotropic underground flow field monitoring device according to claim 3, characterized in that, The orientation measurement electrodes (3) corresponding to each of the common measurement electrodes (2) are arranged in the same direction.

5. A method for monitoring anisotropic subsurface flow fields with apparent resistivity, characterized in that, The method for monitoring underground flow fields using the anisotropic subsurface flow field monitoring device with apparent resistivity as described in claim 4 includes the following steps: S1: Deploy an anisotropic underground flow field monitoring device with apparent resistivity to form a stable DC electric field and a distributed wireless measurement network consisting of several electrode modules corresponding to the measurement points in the measurement area (4); S2: The voltage time sequence data of different directions at the measurement points in the measurement area (4) are continuously collected by the distributed wireless measurement network and voltage measurement module; S3: The control module calculates the apparent resistivity of the measuring point in different directions based on the timing data of the voltage values ​​in different directions at the measuring point; S4: The control module calculates the significant resistivity anisotropy coefficient and the dominant conductivity vector based on the maximum and minimum values ​​of apparent resistivity in different directions, and further generates a plane contour map of the significant resistivity anisotropy coefficient and a distribution map of the dominant conductivity vector at different times that can reflect the dynamic situation of the underground flow field.

6. The method for monitoring anisotropic subsurface flow fields with apparent resistivity according to claim 5, characterized in that, S1 includes: A common measuring electrode (2) and several directional measuring electrodes (3) are set at the measuring point, arranged in a semi-circular arc with the common measuring electrode (2) as the center. Connect the measuring electrodes (3) in each direction to the voltage measuring module respectively; A power supply module (1) is arranged to establish a stable DC electric field in the test area (4). The power supply module (1) includes a power supply device, a power supply electrode A and a power supply electrode B. Specifically, power supply electrode A and power supply electrode B are arranged on both sides of the test area (4). Power supply electrode A is set adjacent to the test area (4), and power supply electrode B is set at infinity in the test area (4). The power supply device sends a regulated DC signal through power supply electrode A and power supply electrode B to establish a stable DC electric field in the test area (4).

7. The method for monitoring anisotropic subsurface flow fields with apparent resistivity according to claim 5, characterized in that, In S3, the specific calculation formula for the apparent resistivity at each measuring point is as follows: ; in: The numbering of the direction measuring electrode (3) For the measuring point The apparent resistivity of the electrode (3) is measured in each direction; For device coefficients, M is the common measurement electrode (2). For the first Measurement electrodes in each direction (3), AM, , These respectively represent the connection between power supply electrode A and the common measurement electrode (2), and between power supply electrode A and the first... Between the directional measuring electrodes (3), and between the common measuring electrode (2) and the first... The distance between the measuring electrodes (3) in each direction; The supply current for the power supply equipment.

8. The method for monitoring anisotropic subsurface flow fields with apparent resistivity according to claim 5, characterized in that, S4 includes: Based on the maximum value of apparent resistivity in different directions at the measuring point and minimum value The significant resistivity anisotropy coefficient was calculated. The specific formula is as follows: ； Minimum value The dominant conductivity vector at the measuring point is defined by its corresponding direction. Based on the significant resistivity anisotropy coefficient and dominant conductance vector at different times, a plane contour map of the significant resistivity anisotropy coefficient and a distribution map of the dominant conductance vector are generated, respectively.

9. A readable storage medium, characterized in that, It stores computer program instructions, which, when executed by a processor, implement the method for monitoring anisotropic subsurface flow fields with apparent resistivity as described in any one of claims 5 to 8.

10. An electronic device, characterized in that, include: The method for monitoring anisotropic subsurface flow fields with apparent resistivity as described in any one of claims 5 to 8 includes at least one processor, at least one memory, and computer program instructions stored in the memory, which are executed by the processor when the computer program instructions are executed.

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