An in-situ, high-fidelity sampling device and method for rare earth mineral weathering layers

Abstract

This application relates to the field of rare earth ore sampling technology, providing an in-situ, high-fidelity sampling device and method for rare earth ore weathering layers. The device includes a drilling platform, a borehole sampling device, a seismic wave excitation device, a seismic wave receiving device, a central control system, and an operation display screen. The borehole sampling device is located at the center of the drilling platform. Multiple seismic wave excitation devices and seismic wave receiving devices are arranged around the borehole sampling device. The borehole sampling device, seismic wave excitation device, seismic wave receiving device, and operation display screen are all electrically connected to the central control system. By rapidly acquiring and analyzing seismic wave data from the sampling area, the weathering layer structure of the sampling area is reconstructed. Based on the imaging results, the sampling operation area is adjusted, completing the sampling in one go. This ensures the authenticity of the sampling while avoiding damage to the original structure of the rare earth.

Description

Technical Field

[0001] This application belongs to the field of rare earth ore sampling technology, and more specifically, it relates to an in-situ, high-fidelity sampling device and method for rare earth ore weathering layers. Background Technology

[0002] Rare earth ore sampling is a crucial step in the design of rare earth resource mining. Current sampling methods typically involve first delineating the sampling area, then using drilling equipment to collect samples. Due to the uncertainty of underground conditions, sampling often encounters underground mineral blocks or rocks. These blocks or rocks can alter the physical properties of the collected rare earth samples, such as density, moisture content, and particle size distribution, leading to sample distortion. Furthermore, they can severely hinder the required sampling depth, affecting the accuracy of the samples. Therefore, multiple drilling and repeated sampling at different points within the sampling area are usually necessary, which is time-consuming and severely damages surface vegetation. Summary of the Invention

[0003] To address the shortcomings of the existing technology, the purpose of this application is to provide an in-situ, high-fidelity sampling device for rare earth mineral weathering layers. This device rapidly collects and analyzes seismic wave data from the area to be sampled, reconstructs the weathering layer structure of the area, adjusts the sampling area based on the imaging results, and completes the sampling in one go, thus ensuring the authenticity of the sampling.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide an in-situ high-fidelity sampling device for rare earth mineral weathering layers, comprising: a drilling platform, a borehole sampling device, a seismic wave excitation device, a seismic wave receiving device, a central control system, and an operation display screen. The borehole sampling device is located at the center of the drilling platform, and multiple seismic wave excitation devices and seismic wave receiving devices are arranged around the borehole sampling device. The borehole sampling device, the seismic wave excitation device, the seismic wave receiving device, and the operation display screen are all electrically connected to the central control system.

[0005] In one embodiment, the drilling sampling device includes: a lifting device, a drilling rig, an adapter, a drilling barrel, and a cutting tool; the lifting device is disposed on the drilling platform, the drilling rig is disposed on the lifting device, the adapter is disposed on the drilling rig, one end of the drilling barrel is connected to the adapter, and the other end is equipped with the cutting tool.

[0006] In one embodiment, the adapter and the drilling barrel are snapped together, and the cutting tool is an annular cutting tool with a hollow conical cutting end.

[0007] In one embodiment, the lifting device is a screw assembly vertically mounted on the drilling platform, and the drilling rig is fixed on the slider of the screw assembly; or, the lifting device includes a gantry and a linear actuator mounted on the gantry, the linear actuator being connected to the drilling rig; the linear actuator is a pneumatic cylinder, a hydraulic cylinder, or an electric push rod.

[0008] In one embodiment, the seismic wave excitation device includes: a positioning sleeve, a contact rod, a rotating buckle, a first spring, and a seismic wave trigger. One end of the first spring is connected to the contact rod, and the other end is connected to the seismic wave trigger. The contact rod, the first spring, and the seismic wave trigger are all movably disposed within the positioning sleeve. One end of the positioning sleeve is fixed to the drilling platform, and the other end is supported on the ground. A rotating buckle is provided on the end of the positioning sleeve away from the ground. The rotating buckle cooperates with the contact rod to stably keep the contact rod in the current position.

[0009] In one embodiment, the seismic wave receiving device includes: a fixed cylinder, a second spring, and a seismic wave receiver; the lower end of the fixed cylinder is open, and the fixed cylinder is disposed outside the lower end of the positioning sleeve; the second spring and the seismic wave receiver are disposed inside the fixed cylinder; one end of the second spring is fixed to the fixed cylinder, and the other end is connected to the seismic wave receiver.

[0010] In one embodiment, both the positioning sleeve and the fixing sleeve are made of metal; the fixing sleeve and the positioning sleeve are radially engaged by a slot and a block.

[0011] In one embodiment, the central control system is housed in an insulating box, and both the seismic wave trigger and the seismic wave receiver are provided with insulating protective sleeves.

[0012] In one embodiment, the drilling platform is equipped with a power storage device.

[0013] Another objective of this application is to provide an in-situ, high-fidelity sampling method for rare earth mineral weathering layers, based on the aforementioned in-situ, high-fidelity sampling device for rare earth mineral weathering layers, the method comprising the following steps:

[0014] S1. Determine the initial sampling location based on the sampling operation area;

[0015] S2. Move the device to the initial sampling position and ensure that both the seismic wave excitation device and the seismic wave receiving device are in contact with the ground surface.

[0016] S3. Under the control of the central control system, the seismic wave excitation device excites seismic waves to the ground, the seismic wave receiving device receives the seismic waves reflected from the ground, and feeds back the seismic wave data to the central control system.

[0017] S4. The central control system performs seismic wave imaging based on the received seismic wave data to identify the weathered layer structure around the sampling operation area.

[0018] S5. The staff decides whether to select an in-situ sampling location based on the seismic wave imaging results displayed on the operation display screen. If the initial sampling location meets the sampling requirements, proceed to step S6. If the initial sampling location does not meet the sampling requirements, repeat step S1 and select a new initial sampling location.

[0019] S6. The central control system controls the drilling sampling device to perform drilling sampling;

[0020] S7. Repeat steps S1-S6 until all sampling operations are completed.

[0021] The beneficial effects of the in-situ high-fidelity sampling device and method for rare earth weathering layers provided in this application are as follows: The device integrates seismic imaging and sampling, with all sampling operations controlled by a central control system, overcoming the shortcomings of traditional sampling methods that lack geological information about the weathering layer. It can acquire high-precision geological information about the sampling area, achieving high-quality, high-fidelity sampling. The device can precisely avoid areas with significant drilling disturbance, enabling accurate, fixed-point natural sampling and providing more reliable sample data for the study of the natural occurrence of rare earth weathering layers. Furthermore, it obtains rare earth samples in their original natural state without adding numerous cumbersome operations to the original sampling method, improving the authenticity of sample collection and effectively increasing the efficiency of rare earth sampling at multiple locations. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view structural schematic diagram of the rare earth mineral weathering layer in-situ high-fidelity sampling device provided in the embodiments of this application.

[0024] Figure 2 A partial cross-sectional view of the rare earth mineral weathering layer in-situ high-fidelity sampling device provided in the embodiments of this application;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0027] Figure 5 A top view schematic diagram of the in-situ high-fidelity sampling device for rare earth mineral weathering layers provided in the embodiments of this application;

[0028] Figure 6 A schematic diagram of seismic wave imaging performed by the in-situ high-fidelity sampling device for rare earth mineral weathering layers provided in this application embodiment.

[0029] The following are the labeling elements in the figure:

[0030] 1. Drilling platform; 2. Drilling sampling device; 21. Lifting device; 22. Drilling rig; 23. Adapter; 24. Drilling barrel; 25. Cutting tool; 3. Seismic wave excitation device; 31. Positioning sleeve; 32. Abutment rod; 321. Annular groove; 33. Rotary buckle; 34. First spring; 35. Seismic wave trigger; 4. Seismic wave receiving device; 41. Fixed cylinder; 42. Second spring; 43. Seismic wave receiver; 44. Locking block; 5. Central control system; 6. Operation display screen; 7. Storage power supply. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] like Figures 1-6 As shown in the present invention, an in-situ authentic sampling device for rare earth mineral weathering layers will now be described in detail.

[0036] This in-situ high-fidelity sampling device for rare earth mineral weathering layers includes: a drilling platform 1, a borehole sampling device 2, a seismic wave excitation device 3, a seismic wave receiving device 4, a central control system 5, and an operation display screen 6. The drilling platform 1 serves as the main support structure. The borehole sampling device 2 is located at the center of the drilling platform 1 and is used for drilling and sampling. Multiple seismic wave excitation devices 3 and 4 are arranged around the borehole sampling device 2 to increase the detection area. The central control system 5 and operation display screen 6 are located on the drilling platform 1. The central control system 5 serves as the control center, while the operation display screen 6 is used by personnel for operation and confirmation of imaging results. The borehole sampling device 2, seismic wave excitation device 3, seismic wave receiving device 4, and operation display screen 6 are all electrically connected to the central control system 5. The central control system 5 controls the operation of each component and is used for seismic wave imaging. The images are displayed on the operation display screen 6 for personnel confirmation. The operation display screen 6 is a touchscreen.

[0037] The seismic wave excitation device 3 and the seismic wave receiving device 4 are used to detect seismic waves underground in the sampling area and feed the seismic wave data back to the central control system 5. The central control system 5 is used to perform seismic wave imaging on the fed-back seismic wave data, invert the weathered layer structure composition of the area to be sampled, and display it on the operation display screen 6. The staff adjusts the sampling operation area according to the imaging results so that the sampling can be completed in one go, which ensures the authenticity of the sampling and does not damage the original structure of rare earth.

[0038] In this embodiment, the device integrates seismic imaging and sampling. All sampling operations are controlled by the central control system 5, overcoming the drawback of unknown geological information in the weathered layer of traditional sampling areas. It acquires high-precision geological information of the sampling area, achieving high-quality, high-fidelity sampling. The device can precisely avoid areas with significant drilling disturbances, enabling accurate, fixed-point natural sampling and providing more reliable sample data for the study of the natural occurrence of rare earth weathered layers. Furthermore, compared to the original sampling method, it obtains rare earth samples in their original natural state without adding numerous cumbersome operations, improving the authenticity of the collection and increasing the efficiency of multi-site rare earth sampling.

[0039] In this embodiment, as Figure 1 and Figure 2As shown, the drilling sampling device 2 includes: a lifting device 21, a drilling rig 22, an adapter 23, a drilling barrel 24, and a cutting blade 25. The lifting device 21 is mounted on the drilling platform 1, the drilling rig 22 is mounted on the lifting device 21, the adapter 23 is mounted on the drilling rig 22, one end of the drilling barrel 24 is connected to the adapter 23, and the other end is fitted with the cutting blade 25. The drilling platform 1 has a through hole for the drilling barrel 24 to move up and down. The lifting device 21 drives the drilling to move up and down. The drilling rig, through the adapter 23, drives the drilling barrel 24 to rotate, so that the cutting blade 25 rotates and drills. The soil sample enters the drilling barrel 24 as it penetrates deeper. An opening extending along the axis can be opened on the side wall of the drilling barrel 24 to facilitate confirmation of the soil sample's integrity; the opening can be sealed with a transparent acrylic plate.

[0040] In this embodiment, the adapter 23 and the drilling barrel 24 are snapped together, such as by a snap-fit ​​groove, which facilitates disassembly and assembly, and the removal of soil samples from the drilling barrel 24. Alternatively, the adapter 23 and the drilling barrel 24 can be connected via a connecting flange. In this embodiment, the cutting blade 25 is an annular cutting blade with a hollow conical cutting end, meaning the drilling end of the cutting blade 25 is conical, which facilitates drilling, and the hollow shape allows soil samples to easily enter the drilling barrel 24.

[0041] like Figure 2 As shown, in this embodiment, the lifting device 21 is a lead screw assembly vertically mounted on the drilling platform 1, and the drilling rig 22 is fixed on the slider of the lead screw assembly. The lead screw assembly is a conventional structure, generally including a base, a lead screw motor, a lead screw, a slider, and a guide rod. In other embodiments, the lifting device 21 includes a gantry frame and a linear actuator mounted on the gantry frame, the linear actuator being connected to the drilling rig 22; the linear actuator is a pneumatic cylinder, a hydraulic cylinder, or an electric push rod. The purpose of the lifting device 21 is to realize the lifting action of drilling for drilling sampling.

[0042] like Figure 2 , Figure 3As shown, in this embodiment, the seismic wave excitation device 3 includes: a positioning sleeve 31, a connecting rod 32, a rotating buckle 33, a first spring 34, and a seismic wave trigger 35. The positioning sleeve 31 is a cylindrical structure open at both ends. One end of the positioning sleeve 31 is fixed to the drilling platform 1, and the other end is supported on the ground. In this embodiment, the positioning sleeve 31 is connected to the drilling platform by welding or a fixed flange, and the positioning sleeve 31 is used to support the entire device on the ground. In this embodiment, the connecting rod 32, the first spring 34, and the seismic wave trigger 35 are all movably disposed within the positioning sleeve 31, which also serves to protect the seismic wave trigger 35. One end of the first spring 34 is connected to the connecting rod 32, and the other end is connected to the seismic wave trigger 35. The seismic wave trigger 35 is disposed within the end of the positioning sleeve 31 closest to the ground. A rotating buckle 33 is provided on the end of the positioning sleeve 31 furthest from the ground. The rotating buckle 33 cooperates with the connecting rod 32 to stably hold the connecting rod 32 in its current position. like Figure 5 As shown, two rotating buckles 33 are provided at the same positioning sleeve 31. The rotating buckles 33 have a straight structure, with one end hinged and the other end being a snap-fit ​​end. A concave annular groove 321 is provided on the abutment rod 32. When the snap-fit ​​end is snapped into the annular groove 321, the position of the abutment rod 32 is not limited, and the two rotating buckles 33 are in a straight line. When the snap-fit ​​end is unscrewed from the annular groove 321, the abutment rod 32 can move freely, and the two rotating buckles 33 are parallel. In actual operation, when the positioning sleeve 31 is placed on the ground, the operator presses the abutment rod 32, compressing the first spring 34, so that the annular groove 321 on the abutment rod 32 and the rotating buckles 33 are on the same horizontal plane. Then, the rotating buckles 33 and the annular groove 321 cooperate to fix the position of the abutment rod 32. At this time, the first spring 34 is in a compressed state, and the elastic force of the first spring 34 will drive the seismic wave trigger 35 to press tightly against the ground.

[0043] like Figure 2 and Figure 4 As shown, in this embodiment, the seismic wave receiving device 4 includes a fixed cylinder 41, a second spring 42, and a seismic wave receiver 43. The lower end of the fixed cylinder 41 is open, and the fixed cylinder 41 is located outside the lower end of the positioning sleeve 31. The length of the fixed cylinder 41 is less than that of the positioning sleeve 31, and the lower end face of the fixed cylinder 41 is flush with the lower end face of the positioning sleeve 31. The second spring 42 and the seismic wave receiver 43 are disposed inside the fixed cylinder 41. One end of the second spring 42 is fixed to the fixed cylinder 41, and the other end is connected to the seismic wave receiver 43. When the fixed cylinder 41 is not in contact with the ground, the seismic wave receiver 43 partially extends out of the fixed cylinder 41. When the fixed cylinder 41 contacts the ground, the seismic wave receiver 43 is pressed into the fixed cylinder 41. At this time, the second spring 42 is in a compressed state, and the second spring 42 drives the seismic wave receiver 43 to press tightly against the ground.

[0044] In this embodiment, the seismic wave trigger 35 and the seismic wave receiver 43 are arranged adjacent to each other, so that the seismic wave receiver 43 can receive the seismic waves reflected from the ground by the seismic wave trigger 35. In this embodiment, there are three, four, or five seismic wave excitation devices 3 and seismic wave receiving devices 4 arranged at equal arc intervals.

[0045] In this embodiment, both the positioning sleeve 31 and the fixing sleeve 41 are made of metal, preferably steel. The fixing sleeve 41 and the positioning sleeve 31 are radially engaged by a slot and a locking block 44. For example, the fixing sleeve 41 has a protruding locking block 44, and the outer wall of the positioning sleeve 31 has a slot. The locking block 44 is radially engaged into the slot, thus fixing the fixing sleeve 41 relative to the positioning sleeve 31 both axially and radially. Of course, the locking block 44 can also be provided on the fixing sleeve 41, and the slot can be provided on the positioning sleeve 31.

[0046] In this embodiment, the central control system 5 is housed within an insulating box. This design ensures that the central control system 5 is in a safe environment and is not affected by external abnormal currents. Insulating protective sleeves are provided around both the seismic wave trigger 35 and the seismic wave receiver 43 to prevent interference from abnormal currents and frictional damage.

[0047] In this implementation, such as Figure 5 As shown, the drilling platform 1 is equipped with a power storage 7, which can be a conventional mobile power source such as a lithium battery to provide power.

[0048] In this embodiment, the drilling platform 1 can be equipped with multiple support legs, each with rollers for easy position adjustment. The drilling platform 1 is also equipped with handles or lifting rings for convenient transport of the device.

[0049] In this embodiment, the central control system 5 is a conventional control system, generally including a signal transmitter, a smart motherboard, a battery, a control interface module, and a signal storage module. The signal transmitter, control interface module, and signal storage module are all connected to the smart motherboard via wires, and the battery is connected to other components via wires. The main function of the signal transmitter is to issue operating commands to the smart motherboard. The main function of the smart motherboard is to control the rotational speed of the drilling rig 22, the descent speed of the lifting device 21, and the frequency of the seismic waves excited by the seismic wave trigger 35, as well as to perform imaging processing on the seismic wave data. The central control system 5 processes the seismic wave data and completes seismic wave imaging on the operation display screen 6. Based on the imaging results, it further guides the selection of sampling areas and simulates the internal structure of a large-scale rare earth weathering layer based on the imaging results of different sampling areas. The main function of the control interface module is to uniformly regulate the data transmission interface between each seismic wave trigger 35, seismic wave receiver 43, and the smart motherboard. The main function of the signal storage module is to store all operating information of the smart motherboard.

[0050] The principle of seismic wave imaging can refer to the existing three-dimensional seismic wave detector TSP-3D equipment. This detector generates seismic wave signals by exciting the source point and propagating them forward in the form of spherical waves in the vertical direction. When an anomaly is encountered in front of the seismic wave, reflected waves (X, Y, Z) are generated, thereby obtaining a large number of three-dimensional data sets to predict the geological spatial structure and distribution of the sampling area.

[0051] It should be noted that both the seismic wave trigger 35 and the seismic wave receiver 43 can be commercially available products. Furthermore, since there are a wide variety of seismic wave imaging methods to choose from, one or more imaging methods can be selected and integrated into the central control system 5. The imaging principle will not be described in detail here.

[0052] In this embodiment, an in-situ authentic sampling method for rare earth mineral weathering layers is also provided. This method is based on the aforementioned in-situ authentic sampling device for rare earth mineral weathering layers and includes the following steps:

[0053] S1. Determine the initial sampling location based on the sampling operation area.

[0054] S2. Move the device to the initial sampling position and make both the seismic wave excitation device 3 and the seismic wave receiving device 4 in contact with the ground surface; wherein, the positioning sleeve 31 is used to provide support, the seismic wave trigger 35 is tightly pressed against the ground under the elastic force of the first spring 34, and the seismic wave receiver 43 is tightly pressed against the ground under the elastic force of the second spring 42.

[0055] S3. The staff operates the display screen 6 and under the control of the central control system 5, the seismic wave excitation device 3 emits seismic waves into the ground, the seismic wave receiving device 4 receives the seismic waves reflected from the ground and feeds the seismic wave data back to the central control system 5.

[0056] S4 and the central control system 5 perform seismic wave imaging based on the received seismic wave data to identify the weathered layer structure around the sampling operation area.

[0057] S5. The central control system 5 displays the seismic wave imaging structure on the operation display screen 6. Based on the seismic wave imaging results, the staff decides whether to select an in-situ sampling location. If the initial sampling location meets the sampling requirements, proceed to step S6. If the initial sampling location does not meet the sampling requirements, repeat step S1 and select a new initial sampling location. If the requirements are not met, it generally means that there are large mineral blocks or rocks underground, which affect the authenticity of the sampling.

[0058] S6. After determining the in-situ sampling location, the central control system 5 controls the drilling sampling device 2 to perform drilling sampling. Under the action of the lifting device 21, the drilling rig 22 is driven to descend, and the drilling operation drives the drilling barrel 24 and the cutting blade 25 to rotate, thereby realizing drilling sampling. After reaching the sampling depth, the lifting device 21 drives the drilling rig 22 to rise, withdrawing the drilling barrel 24 and the cutting blade 25 from the ground, and taking out the soil sample, thus completing one sampling.

[0059] S7. Repeat steps S1-S6 until all sampling operations are completed.

[0060] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for in-situ, high-fidelity sampling of rare earth mineral weathering layers, characterized in that, include: The system comprises a drilling platform (1), a borehole sampling device (2), a seismic wave excitation device (3), a seismic wave receiving device (4), a central control system (5), and an operation display screen (6). The borehole sampling device (2) is located at the center of the drilling platform (1). Multiple seismic wave excitation devices (3) and seismic wave receiving devices (4) are arranged around the borehole sampling device (2). The borehole sampling device (2), seismic wave excitation device (3), seismic wave receiving device (4), and operation display screen (6) are all electrically connected to the central control system (5). (2) Includes: a lifting device (21), a drilling rig (22), an adapter (23), a drilling barrel (24), and a cutting tool (25); the lifting device (21) is mounted on the drilling platform (1), the drilling rig (22) is mounted on the lifting device (21), the adapter (23) is mounted on the drilling rig (22), one end of the drilling barrel (24) is connected to the adapter (23), and the other end is equipped with the cutting tool (25); the side wall of the drilling barrel (24) has an opening extending along the axis, and a transparent acrylic plate is provided to close the opening; The seismic wave excitation device (3) includes: a positioning sleeve (31), a contact rod (32), a rotating buckle (33), a first spring (34), and a seismic wave trigger (35). One end of the first spring (34) is connected to the contact rod (32), and the other end is connected to the seismic wave trigger (35). The contact rod (32), the first spring (34), and the seismic wave trigger (35) are all movably disposed in the positioning sleeve (31). One end of the positioning sleeve (31) is fixed on the drilling platform (1), and the other end is supported on the ground. A rotating buckle (33) is provided on the end of the positioning sleeve (31) away from the ground. The rotating buckle (33) cooperates with the contact rod (32) to make the contact rod (32) stably stay in the current position.

2. The rare earth mineral weathering layer in-situ authentic sampling device as described in claim 1, characterized in that: The adapter (23) and the drilling barrel (24) are connected, and the cutting tool (25) is an annular cutting tool with a hollow conical cutting end.

3. The rare earth ore weathering layer in-situ authentic sampling device as described in claim 2, characterized in that: The lifting device (21) is a screw assembly vertically mounted on the drilling platform (1), and the drilling rig (22) is fixed on the slider of the screw assembly; or, the lifting device (21) includes: a gantry frame and a linear drive mounted on the gantry frame, the linear drive being connected to the drilling rig (22); the linear drive is a cylinder, a hydraulic cylinder or an electric push rod.

4. The in-situ authentic sampling device for rare earth mineral weathering layers as described in claim 1, characterized in that: The seismic wave receiving device (4) includes: a fixed cylinder (41), a second spring (42), and a seismic wave receiver (43); the lower end of the fixed cylinder (41) is open, and the fixed cylinder (41) is located outside the lower end of the positioning sleeve (31). The second spring (42) and the seismic wave receiver (43) are located inside the fixed cylinder (41). One end of the second spring (42) is fixed to the fixed cylinder (41), and the other end is connected to the seismic wave receiver (43).

5. The rare earth mineral weathering layer in-situ authentic sampling device as described in claim 4, characterized in that: Both the positioning sleeve (31) and the fixing sleeve (41) are made of metal; the fixing sleeve (41) and the positioning sleeve (31) are radially engaged by a slot and a block (44).

6. The rare earth ore weathering layer in-situ authentic sampling device as described in claim 5, characterized in that: The central control system (5) is housed in an insulating box, and the outer periphery of the seismic wave trigger (35) and the seismic wave receiver (43) is provided with an insulating protective sleeve.

7. The in-situ authentic sampling device for rare earth mineral weathering layers as described in claim 6, characterized in that: The drilling platform (1) is equipped with a power storage device (7).

8. A method for in-situ, high-fidelity sampling of rare earth mineral weathering layers, characterized in that, Based on the rare earth mineral weathering layer in-situ authentic sampling device as described in any one of claims 1-7, the method includes the following steps: S1. Determine the initial sampling location based on the sampling operation area; S2. Move the device to the initial sampling position and make both the seismic wave excitation device (3) and the seismic wave receiving device (4) contact the ground surface; S3. Under the control of the central control system (5), the seismic wave excitation device (3) sends seismic waves to the ground, the seismic wave receiving device (4) receives the seismic waves reflected from the ground, and feeds back the seismic wave data to the central control system (5). S4. The central control system (5) performs seismic wave imaging based on the received seismic wave data to identify the weathered layer structure around the sampling operation area. S5. The staff decides whether to select an in-situ sampling location based on the seismic wave imaging results displayed on the operation display screen. If the initial sampling location meets the sampling requirements, proceed to step S6. If the initial sampling location does not meet the sampling requirements, repeat step S1 and select a new initial sampling location. S6. The central control system controls the drilling sampling device (2) to perform drilling sampling; S7. Repeat steps S1-S6 until all sampling operations are completed.

Images