A device for rapidly detecting abnormal spatial patterns of ground collapse disease

Abstract

The application relates to the technical field of underground disease body detection, in particular to a device for rapidly detecting abnormal spatial forms of ground subsidence diseases, which comprises a device body, the device body comprises a base plate, a guide rod, a mounting sleeve, a three-dimensional scanner, a driving assembly and a receiving control assembly, the base plate is placed on the ground, the guide rod is vertically arranged in a drill hole and rotationally connected with the base plate, the mounting sleeve is slidably sleeved on the guide rod, the three-dimensional scanner is used for 3D scanning and imaging of the inner wall of a cavity to obtain three-dimensional form data of the cavity, and the driving assembly drives the guide rod to rotate around the axis of the guide rod to drive the mounting sleeve to synchronously rotate. Through the combined rotation and lifting motion, the three-dimensional scanner can complete full-range continuous scanning of the inner wall of the cavity in a single drill hole, so that complete three-dimensional data of the cavity can be obtained, and the whole cavity area can be accurately covered without multiple drilling.

Description

Technical Field

[0001] This application relates to the technical field of underground disease detection, and in particular to a rapid detection device for abnormal spatial morphology of ground subsidence disease. Background Technology

[0002] Ground subsidence is a key hidden danger affecting ground stability. It mainly includes types such as cavities, voids, and looseness. Cavities refer to independent cavities formed underground without filling materials. Voids are tiny gaps formed between the layers of rock and soil. Looseness is a state of loose rock and soil structure with dense pores. Ground subsidence is mostly caused by groundwater erosion, karst development, engineering construction residues, or long-term load effects. If it is not detected in time, it can easily induce safety accidents such as ground subsidence and road damage.

[0003] Currently, the detection of cavities in ground subsidence mainly relies on borehole imaging, which involves drilling multiple times in suspected abnormal areas, inserting a camera into the hole to take images of the hole wall, and relying on the operator's experience to judge the size of the defect. However, a cavity requires multiple drillings to cover the entire area, resulting in a large amount of drilling work and low detection efficiency.

[0004] Therefore, a rapid detection device for abnormal spatial morphology of ground subsidence is needed to solve the problem of low detection efficiency caused by the large workload of existing ground cavity detection drilling. Summary of the Invention

[0005] In order to achieve precise coverage of the entire area of ​​a single cavity and automatic detection of the size of the defect with a single drilling on the ground, thereby improving the detection efficiency of the defect, this application provides a rapid detection device for abnormal spatial morphology of ground subsidence defects.

[0006] This application provides a rapid detection device for abnormal spatial morphology of ground subsidence disease, which adopts the following technical solution: A rapid detection device for abnormal spatial morphology of ground subsidence defects includes a device body comprising a base plate, a guide rod, a mounting sleeve, a 3D scanner, a drive assembly, and a receiving and control assembly. The base plate is placed on the ground. The guide rod is vertically positioned within a borehole and rotatably connected to the base plate. The mounting sleeve is slidably fitted onto the guide rod. The 3D scanner is fixedly mounted on the mounting sleeve. The 3D scanner is used to perform 3D scanning imaging of the inner wall of a cavity to obtain 3D morphological data of the cavity. The drive assembly drives the guide rod to rotate around its own axis, thereby causing the mounting sleeve to rotate synchronously to achieve continuous circumferential scanning of the inner wall of the cavity by the 3D scanner. The drive assembly also drives the mounting sleeve to move up and down axially along the guide rod to achieve continuous longitudinal scanning of the inner wall of the cavity by the 3D scanner. The receiving and control assembly is electrically connected to the 3D scanner and receives the 3D morphological data transmitted by the 3D scanner and controls the operation of the drive assembly.

[0007] By adopting the above technical solution, the base plate is placed on the ground to provide stable support for the device. The guide rod is vertically inserted into the borehole and rotatedly connected to the base plate. The mounting sleeve is slidably fitted onto the guide rod, and the 3D scanner is fixed on the mounting sleeve. The drive component drives the guide rod to rotate and drives the mounting sleeve to rotate synchronously, realizing the 3D scanner's circumferential scanning of the cavity's inner wall. At the same time, the drive component controls the mounting sleeve to rise and fall axially along the guide rod, realizing the 3D scanner's longitudinal scanning of the cavity's inner wall. The receiving and control component receives the 3D morphological data transmitted by the 3D scanner to construct a complete 3D model of the cavity. The receiving and control component also controls the operation of the drive component to realize the automated control of the scanning process, ensuring that the 3D scanner can continuously and stably complete omnidirectional scanning within the cavity. Compared with the existing technology, through the combined motion of rotation and lifting, the 3D scanner can complete a continuous omnidirectional scanning of the cavity's inner wall in a single borehole, thereby obtaining complete 3D morphological data of the cavity and accurately covering the entire diseased area without multiple boreholes.

[0008] Optionally, the device body further includes a limiting anti-fall plate, which is fixedly installed at the bottom end of the guide rod to limit the movement stroke of the mounting sleeve.

[0009] By adopting the above technical solution, when the drive assembly drives the mounting sleeve to descend axially along the guide rod, the limiting anti-fall plate plays a limiting role on the mounting sleeve, restricting the downward movement range of the mounting sleeve, preventing the mounting sleeve from falling off the bottom of the guide rod due to excessive descent, and ensuring the safe and stable operation of the scanning work.

[0010] Optionally, the drive assembly includes a rotary drive and a lifting drive. The rotary drive is fixedly connected to the base plate and drives the guide rod to rotate, thereby causing the mounting sleeve to rotate. The lifting drive is fixedly installed on the guide rod and drives the mounting sleeve to move up and down between the base plate and the limiting anti-fall plate.

[0011] By adopting the above technical solution, the base plate provides an installation carrier for the rotary drive component, enabling the rotary drive component to stably drive the guide rod to rotate around its own axis, thereby driving the mounting sleeve to rotate synchronously, realizing the 3D scanner to continuously scan the inner wall of the cavity. The lifting and lowering movement of the mounting sleeve is controlled by the lifting drive component, enabling the mounting sleeve to achieve smooth axial movement while rotating. The rotational and lifting movements of the mounting sleeve are independently controlled by the rotary drive component and the lifting drive component, so that the rotational and lifting movements of the mounting sleeve can be precisely controlled, improving the accuracy and stability of the scanning trajectory.

[0012] Optionally, a sensor assembly is installed on the mounting sleeve. The sensor assembly includes an axial sensor, a radial sensor, an angle sensor, and a trigger sensor. The axial sensor is fixedly installed at the top of the mounting sleeve to detect the displacement data of the mounting sleeve along the axial direction of the guide rod. The radial sensor is fixedly installed on the periphery of the mounting sleeve to detect the radial data of the inner wall of the cavity. The angle sensor is coaxially arranged with the mounting sleeve to detect the angle change data of the mounting sleeve. The trigger sensor is fixedly installed at the bottom of the mounting sleeve. The trigger sensor is used to trigger a stop signal when the mounting sleeve reaches the limit anti-fall plate. After receiving the stop signal from the trigger sensor, the receiving and control assembly controls the drive assembly to stop.

[0013] By adopting the above technical solution, during the spiral descent of the installation sleeve from the base plate to the limit anti-fall plate, the axial sensor collects the axial displacement data of the installation sleeve in real time, the radial sensor synchronously collects the radial distance data from the peripheral wall of the installation sleeve to the inner wall of the cavity, and the angle sensor records the rotation angle of the installation sleeve. The three work together to provide complete spatial coordinate information for 3D scanning. During the downward movement of the installation sleeve, the trigger sensor sends a stop signal the instant it contacts the limit anti-fall plate. After receiving the signal, the receiving and control component controls the lifting drive to stop driving, preventing the installation sleeve from continuing to move downward and causing equipment collision damage. Based on the 3D scanning of the cavity by the 3D scanner, the sensor component provides multi-dimensional data support for the evaluation and analysis of the cavity, improving the accuracy and efficiency of cavity volume detection.

[0014] Optionally, multiple trigger sensors are distributed along the bottom end of the mounting sleeve.

[0015] By adopting the above technical solution, when the installation sleeve descends to contact the limit anti-fall plate, multiple trigger sensors can simultaneously or sequentially detect the contact signal and transmit it to the receiving control component, thereby improving the reliability and response speed of signal acquisition and thus enhancing the precise control of the installation sleeve's stroke.

[0016] Optionally, the trigger end of the trigger sensor protrudes from the bottom surface of the mounting sleeve, and the trigger end generates elastic deformation when it contacts the limiting anti-fall plate to trigger a stop signal.

[0017] By adopting the above technical solution, the trigger end protrudes from the bottom surface of the mounting sleeve and can quickly generate elastic deformation when it contacts the limit anti-fall plate, thereby ensuring the timeliness and accuracy of the trigger signal. The elastic deformation of the trigger end can also effectively buffer the impact force on the trigger sensor and avoid damage to the trigger sensor and mounting sleeve caused by rigid collision.

[0018] Optionally, the device body is further equipped with an inclination measuring component disposed at the top of the guide rod. The inclination measuring component includes a locking member and an inclination sensor. The inclination sensor is used to monitor the inclination state of the guide rod and transmit the data to the receiving control component. After receiving the data from the inclination sensor, the receiving control component controls the start and stop of the drive component. The inclination sensor is fixedly connected to the guide rod through the locking member.

[0019] By adopting the above technical solution, the tilt sensor is securely installed on the top of the guide rod by the locking component, and monitors the tilt state of the guide rod in real time. When the tilt of the guide rod exceeds the specified value, the tilt sensor can immediately send an abnormal signal to the receiving control component. After receiving and judging the signal, the receiving control component controls the start and stop of the drive component, thus avoiding the impact of the guide rod tilt on the scanning accuracy of the 3D scanner and the data acquisition accuracy of the sensor component, thereby affecting the analysis and judgment of the internal structure of the cavity.

[0020] Optionally, the receiving control component includes a data receiving and storage module, a data control module, and a data transmission line. The data receiving and storage module is used to receive and store data acquired by the 3D scanner, the sensor component, and the tilt sensor. The data control module is used to process the information in the data receiving and storage module and control the operating state of the drive component. The data transmission line is used to electrically connect the data receiving and storage module, the data control module, the 3D scanner, the sensor component, the tilt sensor, and the drive component.

[0021] By adopting the above technical solution, during the movement of the installation sleeve, the data receiving and storage module receives and temporarily stores the three-dimensional spatial data collected by the three-dimensional scanner and sensor components in real time. The data control module dynamically analyzes the stored information and determines the current position of the installation sleeve, and sends start and stop commands to the drive components to ensure that the movement state of the installation sleeve is within a controllable range. At the same time, data transmission between various structures is realized through the data transmission line, thereby improving the overall response speed.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Through a combination of rotation and lifting motion, the 3D scanner can complete a full-range continuous scan of the cavity wall in a single drilling operation, thereby obtaining complete 3D morphological data of the cavity and accurately covering the entire diseased area without the need for multiple drilling operations. 2. When the drive assembly drives the mounting sleeve to descend axially along the guide rod, the limit plate acts as a limiter to restrict the downward movement of the mounting sleeve, preventing it from falling off the bottom of the guide rod due to excessive descent, thus ensuring the safe and stable operation of the scanning work; 3. The tilt sensor is securely installed on the top of the guide rod by a locking device to monitor the tilt status of the guide rod in real time. When the tilt of the guide rod exceeds the specified value, the tilt sensor can immediately send an abnormal signal to the receiving control component. After receiving and judging the signal, the receiving control component controls the start and stop of the drive component to avoid the tilt of the guide rod affecting the scanning accuracy of the 3D scanner and the data acquisition accuracy of the sensor component, thereby affecting the analysis and judgment of the internal structure of the cavity. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the present application, used to illustrate the overall structure of the device body; Figure 2 This is a partial structural diagram of an embodiment of this application. Figure 1 This is used to demonstrate the specific structure of the receiving control component; Figure 3 This is a partial structural diagram of an embodiment of this application. Figure 2 This is used to demonstrate the specific structure of the sensor assembly.

[0024] Reference numerals: 1. Device body; 111. Inclination measurement component; 112. Locking component; 113. Inclination sensor; 2. Base plate; 211. Support plate; 3. Guide rod; 311. Limiting and anti-fall plate; 321. First mounting plate; 4. Mounting sleeve; 411. Sensor assembly; 412. Axial sensor; 413. Radial sensor; 414. Angle sensor; 415. Trigger sensor; 4151. Trigger end; 416. Second mounting plate; 5. 3D scanner; 6. Drive assembly; 611. Rotation drive component; 621. Lifting drive component; 7. Receiving and control assembly; 711. Data transmission line; 712. Data receiving and storage module; 713. Data control module; 8. Ground. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] Example: A rapid detection device for abnormal spatial morphology of ground subsidence disease, reference Figure 1 and Figure 2 The device includes a base plate 2, a guide rod 3, a mounting sleeve 4, a 3D scanner 5, a drive assembly 6, and a receiving and control assembly 7. After determining the location of the cavity, a hole is drilled in the cavity area, and the device 1 is vertically placed into the drilled hole. The bottom end of the base plate 2 abuts against the ground 8, providing stable support for the structure of the device 1. One end of the guide rod 3 is above the ground 8, and the other end passes through the base plate 2 and extends into the cavity below the ground 8. The guide rod 3 is rotatably connected to the base plate 2 through a bearing. The mounting sleeve 4 is slidably sleeved on the guide rod 3 along the axial direction of the guide rod 3. The 3D scanner 5 is fixedly installed on the side wall of the mounting sleeve 4 and moves synchronously with the mounting sleeve 4. The drive assembly 6 is fixedly installed on the device 1 and drives the guide rod 3 to rotate, and the guide rod 3 drives the mounting sleeve 4 to rotate synchronously. The 3D scanner 5 rotates in a circular motion to scan the interior of the cavity. Simultaneously, the drive assembly 6 drives the mounting sleeve 4 to move axially along the guide rod 3, causing the mounting sleeve 4 to move downwards at a uniform speed while rotating. This achieves a spiral scan of the cavity's inner wall, ensuring that the complete 3D morphological data of the cavity can be obtained with a single drilling operation, thus improving the detection efficiency and data accuracy of the cavity. The receiving control assembly 7 is installed on the side of the base plate 2 facing away from the ground 8. The receiving control assembly 7 is electrically connected to the 3D scanner 5 and the drive assembly 6. After the 3D scanner 5 collects data from the cavity's inner wall, it transmits the data signal to the receiving control assembly 7. The receiving control assembly 7 receives the data signal, processes and stores it, and determines whether the movement state of the 3D scanner 5 conforms to the preset scanning path. If a deviation occurs, it controls the drive assembly 6 to make dynamic adjustments.

[0027] refer to Figure 1 and Figure 2The length of the guide rod 3 is greater than the depth of the cavity, ensuring that the mounting sleeve 4, carrying the 3D scanner 5, can spirally lift and completely cover the entire height range of the cavity. A limit anti-fall plate 311 is fixedly installed at the bottom of the guide rod 3. The diameter of the limit anti-fall plate 311 is greater than the diameter of the guide rod 3. When the mounting sleeve 4 moves down along the guide rod 3 to the bottom, the limit anti-fall plate 311 abuts against the bottom of the mounting sleeve 4, thereby limiting the maximum stroke of the mounting sleeve 4 and preventing the mounting sleeve 4 from falling. This improves the safety and stability of the operation of the mounting sleeve 4. The base plate 2 and the limit anti-fall plate 311 together limit the axial movement range of the mounting sleeve 4 along the guide rod 3, ensuring that the 3D scanner 5 completes a precise spiral lifting and scanning path within the preset range.

[0028] refer to Figure 1 and Figure 2 Both the base plate 2 and the limiting fall arrestor 311 are made of opaque material. The opaque design of the base plate 2 effectively prevents external light from entering the borehole through the base plate 2 and interfering with the scanning process of the 3D scanner 5, ensuring stable light in the scanning environment. The opaque design of the limiting fall arrestor 311 effectively blocks stray external light that may exist at the bottom of the hole. The base plate 2 and the limiting fall arrestor 311 together form a double opaque structure, minimizing light interference with the scanning process.

[0029] refer to Figure 1 and Figure 2 The drive assembly 6 includes a rotary drive 611 and a lifting drive 621. The rotary drive 611 is positioned above the ground 8. A support plate 211 is provided on the upper surface of the base plate 2. The rotary drive 611 is positioned at a height higher than the top of the guide rod 3. The support plate 211 is fixedly connected to the base plate 2 via a long rod to ensure the stable installation of the rotary drive 611. In this embodiment, the rotary drive 611 is a servo motor. The output shaft of the rotary drive 611 is fixedly connected to the top of the guide rod 3, driving the guide rod 3 to rotate around its own axis, thereby achieving synchronous rotation of the mounting sleeve 4 and the 3D scanner 5, and thus realizing circumferential scanning of the inner wall of the cavity.

[0030] refer to Figure 1 and Figure 2 A first mounting plate 321 is fixedly installed on the guide rod 3. The first mounting plate 321 is located inside the drill hole and close to the base plate 2 below. Two lifting drive components 621 are provided and symmetrically installed on the first mounting plate 321. In this embodiment, the lifting drive component 621 is an electric cylinder. The telescopic end of the lifting drive component 621 is arranged in the vertical direction and fixedly connected to the upper surface of the mounting sleeve 4. The mounting sleeve 4 is driven to move up and down along the axial direction of the guide rod 3 to realize the precise vertical movement of the 3D scanner 5.

[0031] refer to Figure 1 and Figure 2The lifting drive component 621 and the rotation drive component 611 work together to achieve synchronous control of the rotation and lifting motion of the mounting sleeve 4, so that the 3D scanner 5 can scan stably along the preset spiral path. A second mounting plate 416 is also fixedly installed on the outer peripheral wall of the mounting sleeve 4. The 3D scanner 5 is stably connected to the mounting sleeve 4 through the second mounting plate 416, ensuring that the 3D scanner 5 maintains a stable position during the scanning process.

[0032] refer to Figure 2 and Figure 3 A sensor assembly 411 is also fixedly installed on the mounting sleeve 4. The sensor assembly 411 includes an axial sensor 412, a radial sensor 413, an angle sensor 414, and a trigger sensor 415. The axial sensor 412 is fixedly installed on the periphery of the mounting sleeve 4 and close to the base plate 2. When the mounting sleeve 4 is spirally raised and lowered, the axial sensor 412 collects the axial displacement data of the mounting sleeve 4 in real time. The axial sensor 412 is electrically connected to the receiving control assembly 7. The axial sensor 412 sends data signals to the receiving control assembly 7 and provides real-time feedback on the axial position change of the mounting sleeve 4. After receiving the axial displacement signal, the receiving control assembly 7 analyzes and judges it in combination with preset data and issues a control command to the drive assembly 6.

[0033] refer to Figure 2 and Figure 3 A radial sensor 413 is fixedly installed on the periphery of the mounting sleeve 4 to monitor the radial distance change between the mounting sleeve 4 and the inner wall of the cavity in real time. An angle sensor 414 is fixedly installed on the mounting sleeve 4 and coaxially arranged with the mounting sleeve 4. During the rotation of the mounting sleeve 4, the rotation angle of the mounting sleeve 4 is recorded in real time. The radial sensor 413 is electrically connected to the receiving control component 7. The radial sensor 413 sends data signals to the receiving control component 7 to provide real-time feedback on the relative position change between the mounting sleeve 4 and the inner wall of the cavity. After receiving the radial displacement signal, the receiving control component 7 analyzes and judges it in combination with preset data and issues a control command to the drive component 6.

[0034] refer to Figure 2 and Figure 3In this embodiment, the axial sensor 412 and the radial sensor 413 are selected from one of the following: laser rangefinder, infrared rangefinder, and blue-green rangefinder, depending on the actual working conditions. The laser rangefinder can achieve high-precision measurement in complex geological environments, has strong anti-interference capabilities, and is suitable for continuous ranging needs in deep holes, humid environments, and irregular hole wall environments. The infrared rangefinder has the advantages of fast response speed and low cost, and is suitable for medium and short distance ranging scenarios. The blue-green rangefinder has the ability to penetrate dust and water vapor. If there is a small amount of dust or humid water vapor in the cavity, the laser and infrared signals are easily scattered and attenuated, while blue-green light can reduce signal loss and ensure ranging stability. At the same time, the radial sensor 413 integrates the camera and the lighting module. In the cavity environment with low illumination or poor visibility, the lighting module provides uniform supplementary lighting, and the camera synchronously collects image information of the hole wall. The image information is received and stored by the receiving control component 7, which facilitates the remote observation of the cavity interior by the staff. By combining the ranging data and the image information, a comprehensive analysis of the cavity interior wall can be achieved.

[0035] refer to Figure 2 and Figure 3 A trigger sensor 415 is fixedly installed at the bottom of the mounting sleeve 4. Multiple trigger sensors 415 are provided and evenly distributed along the lower surface of the mounting sleeve 4. They are used to detect whether the mounting sleeve 4 contacts the limiting anti-fall plate 311 during descent. The trigger end 4151 of the trigger sensor 415 protrudes from the lower surface of the mounting sleeve 4. In this embodiment, the trigger end 4151 of the trigger sensor 415 is made of a good conductor material and has a certain elastic deformation capability. When the mounting sleeve 4 moves down to contact the limiting anti-fall plate 311, the trigger end 4151 is compressed and deformed, and the circuit is turned on. The trigger sensor 415 is electrically connected to the receiving control component 7. The trigger sensor 415 sends a trigger signal to the receiving control component 7. The receiving control component 7 immediately controls the drive component 6 to stop working to prevent the mounting sleeve 4 from continuing to move down and causing damage to the device body 1.

[0036] refer to Figure 2 and Figure 3 The trigger end 4151 of the trigger sensor 415 has elastic deformation capability, which buffers and absorbs energy after contacting the limit fall arrestor plate 311. The trigger end 4151 effectively reduces the impact force and avoids damage to the trigger sensor 415 due to rigid collision. After the trigger end 4151 is separated from the limit fall arrestor plate 311, the trigger end 4151 returns to its original shape by its own elasticity, ensuring the stability and reliability of the trigger sensor 415 when it is reused. The trigger ends 4151 of multiple trigger sensors 415 are distributed in a divergent manner to ensure reliable triggering when contacting the limit fall arrestor plate 311 in any direction.

[0037] refer to Figure 2 and Figure 3The device body 1 is also equipped with an inclination measurement component 111, which is fixedly installed on the top of the guide rod 3. The inclination measurement component 111 includes a locking member 112 and an inclination sensor 113. In this embodiment, the locking member 112 is a locking nut, which is used to fix the inclination sensor 113 to the top of the guide rod 3. The inclination sensor 113 is used to monitor the inclination angle change of the guide rod 3 in real time. The inclination sensor 113 is electrically connected to the receiving control component 7. The inclination sensor 113 transmits the collected inclination angle data to the receiving control component 7 in real time. The receiving control component 7 determines whether the guide rod 3 deviates from the vertical state according to a preset threshold. When the preset threshold is exceeded, the drive component 6 is controlled to stop to avoid affecting the scanning accuracy of the 3D scanner 5 and the data acquisition accuracy of the sensor component 411.

[0038] refer to Figure 2 and Figure 3 The receiving and control component 7 includes a data transmission line 711, a data receiving and storage module 712, and a data control module 713. The data transmission line 711 is used to realize the electrical connection and signal transmission between the data receiving and storage module 712, the data control module 713, the 3D scanner 5, the sensor component 411, the tilt sensor 113, and the drive component 6. The second mounting plate 416 and the base plate 2 are provided with through holes for the data transmission line 711 to pass through. The data receiving and storage module 712 and the data control module 713 are set on the upper surface of the base plate 2. The data receiving and storage module 712 receives the data transmitted by the data transmission line 711 and performs real-time storage and processing. The data control module 713 issues control commands to the drive component 6 according to the processing results to ensure that the 3D scanner 5, the sensor component 411, and the tilt sensor 113 work together.

[0039] refer to Figure 2 and Figure 3 Driven by the lifting drive component 621 and the rotating drive component 611, the 3D scanner 5 performs a full-range scan of the inner wall of the cavity, acquiring 3D data of the inner wall. The axial sensor 412, radial sensor 413, angle sensor 414, and trigger sensor 415 collect data in real time on the axial displacement of the installation sleeve 4, the radial distance of the inner wall of the cavity, the rotation angle, and the contact state with the limit anti-fall plate 311. Based on the scan of the 3D scanner 5, data inside the cavity can be further obtained, which facilitates the staff to accurately analyze the cavity structure and surrounding environment, and provides a reliable basis for subsequent construction safety assessment. The tilt sensor 113 monitors the tilt state of the guide rod 3 in real time, ensuring that the 3D scanner 5 and the sensor assembly 411 always maintain a vertical posture during the scanning process, avoiding data distortion caused by tilt.

[0040] The implementation principle of this application embodiment is as follows: After determining the location of the cavity, a hole is drilled in the cavity area, and the device body 1 is vertically placed into the drill hole. The bottom end of the base plate 2 abuts against the ground 8. One end of the guide rod 3 with the installation limit and anti-fall plate 311 extends into the cavity. The base plate 2 and the limit and anti-fall plate 311 form a double opaque structure, isolating internal and external light interference and providing a stable scanning environment for the 3D scanner 5. The rotation drive component 611 drives the guide rod 3 to rotate, which drives the mounting sleeve 4 to rotate synchronously. The lifting drive component 621 drives the mounting sleeve 4 to move down along the guide rod 3 at a uniform speed. The system enables the 3D scanner 5 to perform a spiral lifting and lowering scan of the inner wall of the cavity. The guide rod 3 is longer than the depth of the cavity, ensuring that the scan covers the entire height of the cavity. This allows for the acquisition of complete 3D morphological data with a single drilling operation. During the spiral lifting and lowering process of the installation sleeve 4, the sensor assembly 411 synchronously feeds back the axial displacement of the installation sleeve 4, the radial distance to the inner wall of the cavity, the rotation angle, and the contact status with the limit anti-fall plate 311. This further obtains data about the inside of the cavity, providing multi-dimensional data support for the assessment and analysis of the cavity and improving the accuracy and efficiency of cavity volume detection.

[0041] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rapid detection device for abnormal spatial morphology of ground subsidence disease, comprising a device body (1), characterized in that: The device body (1) includes a base plate (2), a guide rod (3), a mounting sleeve (4), a 3D scanner (5), a drive assembly (6), and a receiving and control assembly (7). The base plate (2) is placed on the ground (8). The guide rod (3) is vertically arranged in the borehole and rotatably connected to the base plate (2). The mounting sleeve (4) is slidably fitted on the guide rod (3). The 3D scanner (5) is fixedly installed on the mounting sleeve (4). The 3D scanner (5) is used to perform 3D scanning imaging of the inner wall of the cavity to obtain the three-dimensional morphological data of the cavity. The drive assembly (6) drives the guide rod (3) to rotate around its own axis to drive the mounting sleeve (4) to rotate synchronously so as to realize the 3D scanner (5) to continuously scan the inner wall of the cavity in the circumferential direction. The drive assembly (6) drives the mounting sleeve (4) to move up and down along the axial direction of the guide rod (3) so as to realize the 3D scanner (5) to continuously scan the inner wall of the cavity in the longitudinal direction. The receiving control assembly (7) is electrically connected to the 3D scanner (5). The receiving control assembly (7) receives the 3D morphological data transmitted by the 3D scanner (5) and controls the operation of the drive assembly (6).

2. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 1, characterized in that: The device body (1) also includes a limiting anti-fall plate (311), which is fixedly installed at the bottom end of the guide rod (3) to limit the movement of the mounting sleeve (4).

3. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 2, characterized in that: The drive assembly (6) includes a rotary drive (611) and a lifting drive (621). The rotary drive (611) is fixedly connected to the base plate (2). The rotary drive (611) drives the guide rod (3) to rotate so as to drive the mounting sleeve (4) to rotate. The lifting drive (621) is fixedly installed on the guide rod (3). The lifting drive (621) drives the mounting sleeve (4) to move up and down between the base plate (2) and the limiting anti-fall plate (311).

4. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 3, characterized in that: A sensor assembly (411) is installed on the mounting sleeve (4). The sensor assembly (411) includes an axial sensor (412), a radial sensor (413), an angle sensor (414), and a trigger sensor (415). The axial sensor (412) is fixedly installed on the top of the mounting sleeve (4) to detect the displacement data of the mounting sleeve (4) along the axial direction of the guide rod (3). The radial sensor (413) is fixedly installed on the periphery of the mounting sleeve (4) to detect the radial data of the inner wall of the cavity. The angle sensor (414) is coaxially arranged with the mounting sleeve (4) to detect the angle change data of the mounting sleeve (4). The trigger sensor (415) is fixedly installed on the bottom of the mounting sleeve (4). The trigger sensor (415) is used to trigger a stop signal when the mounting sleeve (4) reaches the limit anti-fall plate (311). After receiving the stop signal from the trigger sensor (415), the receiving control assembly (7) controls the driving assembly (6) to stop.

5. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 4, characterized in that: Multiple trigger sensors (415) are distributed along the bottom end of the mounting sleeve (4).

6. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 4, characterized in that: The trigger end (4151) of the trigger sensor (415) protrudes from the bottom surface of the mounting sleeve (4). When the trigger end (4151) comes into contact with the limiting anti-fall plate (311), it generates elastic deformation to trigger a stop signal.

7. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 4, characterized in that: The device body (1) is also equipped with an inclination measuring component (111) located at the top of the guide rod (3). The inclination measuring component (111) includes a locking member (112) and an inclination sensor (113). The inclination sensor (113) is used to monitor the inclination state of the guide rod (3) and transmit the data to the receiving control component (7). After receiving the data from the inclination sensor (113), the receiving control component (7) controls the drive component (6) to start and stop. The inclination sensor (113) is fixedly connected to the guide rod (3) through the locking member (112).

8. The rapid detection device for abnormal spatial morphology of ground subsidence disease according to claim 7, characterized in that: The receiving control component (7) includes a data receiving and storage module (712), a data control module (713), and a data transmission line (711). The data receiving and storage module (712) is used to receive and store data collected by the 3D scanner (5), the sensor assembly (411), and the tilt sensor (113). The data control module (713) is used to process the information in the data receiving and storage module (712) and control the operating state of the drive component (6). The data transmission line (711) is used to electrically connect the data receiving and storage module (712), the data control module (713), the 3D scanner (5), the sensor assembly (411), the tilt sensor (113), and the drive component (6).

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