Multi-point drilling holographic imaging detection method, system and equipment and storage medium

Abstract

The invention discloses a multi-point drilling holographic imaging detection method, system and device and a storage medium, and relates to the technical field of underground goaf detection, and the detection method comprises the steps: carrying out the multi-point drilling at a planned position through a drilling device, and recording the drilling parameters; a set of holographic imaging system used for collecting drilling data is installed in each drilling hole and covers the whole detection area; a data collecting and processing system is established and used for processing the drilling data collected by the holographic imaging system, and a holographic image of the underground goaf is established; the holographic image of the underground goaf is analyzed, and the boundary, structural features and potential dangerous areas of the goaf are identified; and risk assessment and safety assessment are carried out in combination with geological information, and comprehensive treatment suggestions are given. According to the detection method, the ultra-large underground goaf is detected in detail, the influence of the underground goaf on the surrounding environment and the engineering structure is evaluated, and a basis is provided for risk evaluation.

Description

Technical Field

[0001] The present invention relates to the technical field of underground void detection, and more specifically to a multi-point borehole holographic imaging detection method, system, equipment and storage medium. Background Art

[0002] Ultra-large underground voids generally refer to vast cavities or spaces beneath the Earth's surface, formed by natural or human factors. They are typically found in mining areas, areas with developed karst caves, or areas with frequent groundwater activity. These voids pose potential risks and can cause surface collapse, alter groundwater conditions, and contaminate groundwater.

[0003] Due to the hidden nature of underground voids, the detection and monitoring of ultra-large underground voids typically utilizes technologies such as geophysical exploration, acoustic detection, borehole exploration, and remote sensing. Drilling exploration is widely used in underground engineering, but it is costly and time-consuming, and can only provide point-like information, resulting in low efficiency and accuracy in detecting ultra-large underground voids. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a multi-point borehole holographic imaging detection method, system, equipment and storage medium to solve the technical problem of low detection efficiency and accuracy of ultra-large underground voids in existing drilling exploration operations.

[0005] To achieve the above objectives, the first objective of the present invention is to provide a method for detecting underground void areas using multi-point borehole holographic imaging, the method comprising: Step S1: Use drilling equipment to perform multiple drillings at the planned locations and record drilling parameters; Step S2: Install a holographic imaging system in each borehole for collecting borehole data, and cover the entire detection area; Step S3: establishing a data acquisition and processing system for processing the drilling data acquired by the holographic imaging system to construct a holographic image of the underground void; Step S4: analyzing the holographic image of the underground empty area to identify the boundaries, structural features and potential dangerous areas of the empty area; Step S5: Conduct risk assessment and safety assessment based on geological information and provide comprehensive management recommendations.

[0006] Furthermore, before step S1, the method further includes: Step S0: Conduct a geological survey of the underground void area, plan the location and depth of the drill holes based on the geological survey, and connect them to form a holographic imaging network while covering the entire underground void area.

[0007] Furthermore, in step S1, the drilling equipment is used to perform actual drilling operations at the planned drilling location, and the drilling equipment includes a drilling rig and a drilling tool installed on the drilling rig, and the drilling tool is suitable for drilling a hole of a predetermined depth and then maintaining a certain inclination angle for drilling.

[0008] Furthermore, in step S2, the holographic imaging system includes a laser emitter, an optical sensor, a holographic recording medium, and a controller, wherein: The laser emitter is suitable for emitting laser light to illuminate the underground space under the action of the controller, the optical sensor is suitable for receiving the laser light reflected from the underground space to form an initial holographic image, and the holographic recording medium is suitable for capturing the interference holographic image of the laser light.

[0009] Furthermore, in step S3, the establishment of a data acquisition and processing system for processing the drilling data acquired by the holographic imaging system to construct a holographic image of the underground void specifically includes: Step S 31 : Converting the light signal received by the optical sensor into an electrical signal; Step S 32 : performing denoising, filtering, and correction processing on the initial holographic data collected from the interference holographic image to obtain first holographic data; Step S 33 : Use the first holographic data to perform three-dimensional imaging to obtain a three-dimensional structural model of the entire underground void area.

[0010] Furthermore, in step S5, the risk assessment and safety assessment are conducted in combination with geological information, and comprehensive management suggestions are given, specifically including: Step S 51 : Analyze the three-dimensional structural model of the underground void and extract the geometric parameters and boundary condition information of the underground void; Step S 52 : Based on the geological conditions, explain the causes, stability and impact of the underground void on the surrounding environment.

[0011] A second object of the present invention is to provide an underground void multi-point borehole holographic imaging detection system, which uses the underground void multi-point borehole holographic imaging detection method described above, and the detection system includes: Drilling equipment, including a drilling rig and a drilling tool mounted on the drilling rig, the drilling tool being used to perform actual drilling operations at the planned drilling location; A holographic imaging device is installed in each drilled borehole. Each holographic imaging device includes a laser emitter, an optical sensor, and a holographic recording medium. The laser emitter is used to emit laser light and illuminate the corresponding borehole; the optical sensor is used to receive laser light reflected from the underground void to form an initial holographic image; and the holographic recording medium is used to capture the interference pattern of the laser light to form an interference holographic image. A data acquisition and processing system is used to convert the light signals received by the optical sensor into electrical signals, perform denoising, filtering, and correction processing on the data of the collected initial holographic image, and use the interference holographic image to perform three-dimensional imaging to obtain a three-dimensional structural model of the entire underground void area; The controller is used to control the holographic imaging equipment and the data acquisition and processing system to work according to the set requirements.

[0012] A third object of the present invention is to provide an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the method described above when executing the program.

[0013] A fourth object of the present invention is to provide a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method described above.

[0014] Compared with the prior art, the present invention has the following advantages and effects: The multi-point drilling holographic imaging detection method for underground voids in this application includes the following steps: using drilling equipment to perform multi-point drilling at planned locations and recording drilling parameters. By performing multi-point drilling at planned locations and installing a holographic imaging system in each borehole, data on the underground void can be obtained from multiple angles and positions. This multi-point detection method can significantly improve the precision and accuracy of detection and avoid blind spots and errors that may exist in single-point detection; installing a holographic imaging system for collecting drilling data in each borehole and covering the entire detection area; establishing a data acquisition and processing system for processing the drilling data collected by the holographic imaging system to construct a holographic image of the underground void; and processing the data collected by the holographic imaging system by establishing a data acquisition and processing system to further improve the accuracy and reliability of the data. Advanced data processing algorithms can effectively remove noise and interference, improving the quality of holographic images and more accurately identifying the boundaries, structural features, and potential hazardous areas of underground voids. Holographic images of these voids are analyzed to identify their boundaries, structural features, and potential hazardous areas. Through the installation of multiple drilling points and holographic imaging systems, a holographic imaging network is formed covering the entire detection area. This network layout can provide comprehensive information on underground voids, ensuring the reliability and integrity of detection results. The construction of a holographic imaging network can also enhance detection flexibility, allowing the location and number of drill holes to be adjusted according to actual needs to accommodate different geological conditions and detection requirements. Risk assessments and safety assessments combined with geological information can provide a more comprehensive understanding of the geological background and potential risks of underground voids. The integration of geological information can provide an important basis for comprehensive governance recommendations, improving the pertinence and effectiveness of governance measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the process of the multi-point borehole holographic imaging detection method for underground void areas in an embodiment of the present invention; Figure 2 Schematic diagram of the structure of a multi-point borehole holographic imaging detection method system for underground void areas according to an embodiment of the present invention; Figure 3 FIG. 4 is a schematic structural diagram of a specific electronic device in an embodiment of the present invention.

[0016] Description of reference numerals: 110 - processor; 120 - memory 120; 130 - input / output interface; 140 - communication interface; 150 - bus. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. In describing the present invention, it should be noted that the terms "include" and "comprising" as used herein should be understood as inclusive and open-ended, rather than exclusive. Specifically, when the terms "include" and "comprising" and their synonyms are used in the specification and claims, they indicate the inclusion of the specified features, steps, or components. These terms should not be interpreted as excluding the presence of other features, steps, or components.

[0018] Accurately understanding the spatial distribution characteristics of underground voids (including caves, goafs, and abandoned tunnels) is crucial for underground engineering projects such as tunneling, mining, and underground space development. Currently, the industry primarily uses a combination of borehole exploration and geophysical surveying to detect underground voids, but significant technical bottlenecks remain in practical application.

[0019] Traditional drilling exploration technology, through core sampling and in-hole imaging, can directly obtain stratum structural parameters and is considered the most reliable means of underground exploration. However, this technology has the following key drawbacks in practical application: First, the cost of single-hole operations is high. According to industry statistics, the average cost of an exploration hole with a depth of more than 100 meters is 80,000 to 120,000 yuan per hole, and the time spent on relocating drilling equipment accounts for about 35% of the overall construction period; secondly, point information has obvious limitations. Conventional hole spacing (usually 50-100 meters) makes it difficult to capture the sudden change characteristics of the void boundary, especially for multi-connected cavities with complex morphology. The missed detection rate can reach more than 40%; finally, the detection cycle is negatively correlated with accuracy. Although denser hole spacing can improve resolution, it will lead to an exponential increase in construction period.

[0020] To solve the above technical problems, please refer to Figure 1-2 As shown, in one embodiment, the present invention provides a method for detecting underground void areas through multi-point borehole holographic imaging, the detection method comprising: Step S1: Use drilling equipment to perform multiple drillings at the planned locations and record drilling parameters; In this step, by drilling multiple holes at planned locations and installing a holographic imaging system in each hole, data on the underground void area can be acquired from multiple angles and locations. This multi-point detection method significantly improves the precision and accuracy of detection, avoiding the blind spots and errors that may occur with single-point detection.

[0021] Step S2: Install a holographic imaging system in each borehole for collecting borehole data, and cover the entire detection area; Step S3: establishing a data acquisition and processing system for processing the drilling data acquired by the holographic imaging system to construct a holographic image of the underground void; In this step, a data acquisition and processing system is established to process the data collected by the holographic imaging system, further improving the accuracy and reliability of the data. Advanced data processing algorithms can effectively remove noise and interference, improve the quality of the holographic image, and more accurately identify the boundaries of underground voids, structural features, and potential danger zones.

[0022] Step S4: analyzing the holographic image of the underground empty area to identify the boundaries, structural features and potential dangerous areas of the empty area; In this step, multiple drilling points and the installation of a holographic imaging system are used to cover the entire detection area, forming a holographic imaging network. This network layout provides comprehensive information about underground voids, ensuring the reliability and integrity of detection results. The construction of a holographic imaging network also increases detection flexibility, allowing the location and number of drill holes to be adjusted as needed to accommodate varying geological conditions and detection requirements.

[0023] Step S5: Conduct risk assessment and safety assessment based on geological information and provide comprehensive management recommendations.

[0024] Integrating geological information into risk and safety assessments during this step provides a more comprehensive understanding of the geological background and potential risks of underground voids. This integration of geological information provides an important basis for comprehensive remediation recommendations, improving the relevance and effectiveness of remediation measures.

[0025] Therefore, by analyzing holographic images of underground voids, it is possible to accurately identify potentially hazardous areas, such as gas accumulation zones and rockburst risk zones. This precise identification capability provides important data support for risk assessment, enabling a more scientific assessment of the risk level of underground voids. Comprehensive management recommendations based on the assessment results can effectively reduce safety hazards in underground voids and improve the safety management of underground projects.

[0026] Specifically, in one embodiment of the present invention, before step S1, the following steps are further included: Step S0: Conduct a geological survey of the underground void area, plan the location and depth of the drill holes based on the geological survey, and connect them to form a holographic imaging network while covering the entire underground void area.

[0027] Therefore, geological surveys of underground voids provide a detailed understanding of the geological conditions within the voids, such as rock type, gas content, and geological structure. Based on this information, the location and depth of drill holes can be planned more accurately, ensuring that the holes effectively cover the entire void, thereby improving the efficiency of gas extraction or other resource extraction.

[0028] In addition, geological surveys can help identify adverse geological conditions in underground voids, such as faults and fracture zones, so that these areas can be avoided when planning drilling, avoiding ineffective drilling operations in these areas and saving time and resources.

[0029] More specifically, in step S1, the drilling equipment is used to perform actual drilling operations at the planned drilling location, and the drilling equipment includes a drilling rig and a drilling tool installed on the drilling rig, and the drilling tool is suitable for drilling a hole of a predetermined depth and then maintaining a certain inclination angle for drilling.

[0030] As the core component of drilling equipment, the drill rig provides powerful power support for drilling operations. Parameters such as its rated torque and rated speed determine the drilling progress and efficiency. The drill rig's spindle inclination angle is adjustable from –90° to +90°, and the hole height is adjustable from 0.78 to 1.48 m. This allows the drill rig to precisely adjust the angle and height of the hole according to actual needs, thereby improving drilling accuracy. Controlling the drill tool's inclination angle can improve drilling quality. For example, during directional drilling, by adjusting the drill tool's inclination angle, the hole can be extended along a predetermined trajectory, thereby improving the straightness and integrity of the hole.

[0031] More specifically, in step S2, the holographic imaging system includes a laser emitter, an optical sensor, a holographic recording medium, and a controller, wherein: The laser emitter is suitable for emitting laser light to illuminate the underground space under the action of the controller, the optical sensor is suitable for receiving the laser light reflected from the underground space to form an initial holographic image, and the holographic recording medium is suitable for capturing the interference holographic image of the laser light.

[0032] In this technical solution, the laser emitter is responsible for emitting laser light, while the controller adjusts parameters to minimize the impact on light source quality and adaptability. The optical sensor receives the reflected light and forms the initial holographic image. The holographic recording medium captures the interference pattern, which is crucial for resolution and stability. The controller, as the core, coordinates these various components, requiring analysis of synchronization accuracy and intelligence.

[0033] For example, using short-wavelength lasers in laser transmitters can improve spatial resolution and is suitable for detecting millimeter-scale structures, but a balance needs to be struck between penetration and scattering loss. Multi-angle illumination can be achieved through galvanometers / rotating prisms to cover a larger field of view (up to 120°), but mechanical vibrations need to be compensated.

[0034] The optical sensor uses a back-illuminated CMOS sensor to improve weak light response capabilities and is suitable for low-reflectivity rock environments.

[0035] More specifically, in step S3, the establishment of a data acquisition and processing system for processing the drilling data acquired by the holographic imaging system to construct a holographic image of the underground void specifically includes: Step S 31 : Converting the light signal received by the optical sensor into an electrical signal; During this step, the optical sensor converts the light signal into an electrical signal, requiring high sensitivity and low noise, which directly impacts the quality of subsequent data. High-performance photoelectric conversion devices (such as CMOS or CCD) are preferred to improve dynamic range and signal-to-noise ratio.

[0036] Step S 32 : performing denoising, filtering, and correction processing on the initial holographic data collected from the interference holographic image to obtain first holographic data; In this step, the use of wavelet denoising / deep learning denoising algorithms can effectively eliminate sensor noise and environmental interference, but excessive smoothing that leads to loss of detail must be avoided; the combination of spatial filtering (such as Fourier filtering) and frequency domain filtering can eliminate interference in specific frequency bands, but may introduce phase distortion, which requires synchronous correction; the accuracy of geometric correction (such as lens distortion correction) and phase correction (such as reference light compensation) directly affects the 3D reconstruction error, and a high-precision calibration model needs to be established.

[0037] Step S 33 : Use the first holographic data to perform three-dimensional imaging to obtain a three-dimensional structural model of the entire underground void area.

[0038] In this step, multi-view data fusion technology can solve the blind spot problem, but it is necessary to ensure that the registration error is less than 1 / 5 of the pixel size.

[0039] More specifically, in step S5, the risk assessment and safety assessment are conducted in combination with geological information, and comprehensive management suggestions are given, including: Step S 51 : Analyze the three-dimensional structural model of the underground void and extract the geometric parameters and boundary condition information of the underground void; Step S 52 : Based on the geological conditions, explain the causes, stability and impact of the underground void on the surrounding environment.

[0040] Therefore, visualizing the spatial morphology of underground voids (such as volume, distribution, burial depth, etc.) through three-dimensional models provides a geometric basis for risk assessment and is a prerequisite for subsequent mechanical analysis and stability simulation.

[0041] See also Figure 2 As shown, an embodiment of the present invention further provides an underground void multi-point borehole holographic imaging detection system, which adopts the above-mentioned underground void multi-point borehole holographic imaging detection method, and the detection system includes: Drilling equipment, including a drilling rig and a drilling tool mounted on the drilling rig, the drilling tool being used to perform actual drilling operations at the planned drilling location; A holographic imaging device is installed in each drilled borehole. Each holographic imaging device includes a laser emitter, an optical sensor, and a holographic recording medium. The laser emitter is used to emit laser light and illuminate the corresponding borehole; the optical sensor is used to receive laser light reflected from the underground void to form an initial holographic image; and the holographic recording medium is used to capture the interference pattern of the laser light to form an interference holographic image. A data acquisition and processing system is used to convert the light signals received by the optical sensor into electrical signals, perform denoising, filtering, and correction processing on the data of the collected initial holographic image, and use the interference holographic image to perform three-dimensional imaging to obtain a three-dimensional structural model of the entire underground void area; The controller is used to control the holographic imaging equipment and the data acquisition and processing system to work according to the set requirements.

[0042] The detection system of the above embodiment is used to implement the corresponding underground void area multi-point drilling holographic imaging detection method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0043] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, an embodiment of the present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable by the processor, and when the processor executes the program, it implements any of the methods described above.

[0044] Figure 3 1 shows a more specific hardware structure diagram of an electronic device provided by this embodiment. The device may include: a processor 110, a memory 120, an input / output interface 130, a communication interface 140, and a bus 150. The processor 110, the memory 120, the input / output interface 130, and the communication interface 140 are connected to each other within the device via the bus 150.

[0045] The processor 110 can be implemented using a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0046] The memory 120 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage devices, dynamic storage devices, etc. The memory 120 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 120 and is called and executed by the processor 110.

[0047] The input / output interface 130 is used to connect input / output modules to implement information input and output. The input / output modules can be configured as components within the device (not shown in the figure) or can be externally connected to the device to provide corresponding functions. Input devices may include a keyboard, mouse, touch screen, microphone, various sensors, etc., and output devices may include a display, speaker, vibrator, indicator light, etc.

[0048] The communication interface 140 is used to connect to a communication module (not shown) to enable communication between the device and other devices. The communication module can communicate via a wired method (such as USB, network cable, etc.) or a wireless method (such as mobile network, WiFi, Bluetooth, etc.).

[0049] The bus 150 comprises a pathway for transmitting information between the various components of the device (eg, the processor 110 , the memory 120 , the input / output interface 130 , and the communication interface 140 ).

[0050] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present disclosure also provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable the computer to execute the underground void area multi-point drilling holographic imaging detection method as described in any of the above embodiments.

[0051] The computer-readable media of this embodiment include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disc (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0052] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the underground void area multi-point drilling holographic imaging detection method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0054] In addition, to simplify the description and discussion, and so as not to obscure the embodiments of the present disclosure, known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, devices may be shown in the form of block diagrams to avoid obscuring the embodiments of the present disclosure, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the embodiments of the present disclosure are to be implemented (i.e., these details should be fully within the purview of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present disclosure, it will be apparent to those skilled in the art that the embodiments of the present disclosure may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0055] Although the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0056] Although the present invention is disclosed as above, the scope of protection disclosed by the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A method for detecting underground empty areas by multi-point drilling holographic imaging, characterized in that: The detection method comprises: Step S1: Use drilling equipment to perform multiple drillings at the planned locations and record drilling parameters; Step S2: Install a holographic imaging system in each borehole for collecting borehole data, and cover the entire detection area; Step S3: establishing a data acquisition and processing system for processing the drilling data acquired by the holographic imaging system to construct a holographic image of the underground void; Step S4: analyzing the holographic image of the underground empty area to identify the boundaries, structural features and potential dangerous areas of the empty area; Step S5: Conduct risk assessment and safety assessment based on geological information and provide comprehensive management recommendations.

2. The method for detecting underground void areas by multi-point drilling holographic imaging according to claim 1, characterized in that: Before step S1, the method further includes: Step S0: Conduct a geological survey of the underground void area, plan the location and depth of the drill holes based on the geological survey, and connect them to form a holographic imaging network while covering the entire underground void area.

3. The method for detecting underground void areas by multi-point drilling holographic imaging according to claim 2, characterized in that: In step S1, the drilling equipment is used to perform actual drilling operations at the planned drilling location, and the drilling equipment includes a drilling rig and a drilling tool installed on the drilling rig, and the drilling tool is suitable for drilling a hole of a predetermined depth and then maintaining a certain inclination angle for drilling.

4. The method for detecting underground void areas by multi-point drilling holographic imaging according to claim 1, characterized in that: In step S2, the holographic imaging system includes a laser emitter, an optical sensor, a holographic recording medium, and a controller, wherein: The laser emitter is suitable for emitting laser light to illuminate the underground space under the action of the controller, the optical sensor is suitable for receiving the laser light reflected from the underground space to form an initial holographic image, and the holographic recording medium is suitable for capturing the interference holographic image of the laser light.

5. The method for detecting underground void areas by multi-point drilling holographic imaging according to claim 4, characterized in that: In step S3, the data acquisition and processing system is established to process the drilling data acquired by the holographic imaging system to construct a holographic image of the underground void, specifically including: Step S 31 : Converting the light signal received by the optical sensor into an electrical signal; Step S 32 : performing denoising, filtering, and correction processing on the initial holographic data collected from the interference holographic image to obtain first holographic data; Step S 33 : Use the first holographic data to perform three-dimensional imaging to obtain a three-dimensional structural model of the entire underground void area.

6. The method for detecting underground void areas by multi-point drilling holographic imaging according to claim 5, characterized in that: In step S5, the risk assessment and safety assessment are conducted in combination with geological information, and comprehensive management suggestions are given, including: Step S 51 : Analyze the three-dimensional structural model of the underground void and extract the geometric parameters and boundary condition information of the underground void; Step S 52 : Based on the geological conditions, explain the causes, stability and impact of the underground void on the surrounding environment.

7. An underground void area multi-point borehole holographic imaging detection system, using the underground void area multi-point borehole holographic imaging detection method according to any one of claims 1 to 6, characterized in that: The detection system comprises: Drilling equipment, including a drilling rig and a drilling tool mounted on the drilling rig, the drilling tool being used to perform actual drilling operations at the planned drilling location; A holographic imaging device is installed in each drilled borehole. Each holographic imaging device includes a laser emitter, an optical sensor, and a holographic recording medium. The laser emitter is used to emit laser light and illuminate the corresponding borehole; the optical sensor is used to receive laser light reflected from the underground void to form an initial holographic image; and the holographic recording medium is used to capture the interference pattern of the laser light to form an interference holographic image. A data acquisition and processing system is used to convert the light signals received by the optical sensor into electrical signals, perform denoising, filtering, and correction processing on the data of the collected initial holographic image, and use the interference holographic image to perform three-dimensional imaging to obtain a three-dimensional structural model of the entire underground void area; The controller is used to control the holographic imaging equipment and the data acquisition and processing system to work according to the set requirements.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the method according to any one of claims 1 to 5 when executing the program. 9 . A non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the method according to claim 1 .

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