Geological sampling device based on hyperspectral scanning technology

Abstract

The present application relates to geological survey technical field, especially based on hyperspectral scanning technology geological sampling device, including: the mounting shaft, the mounting shaft detachable connection has the outer tube, the lower end of outer tube detachable connection has the drill bit, the mounting shaft rotationally connected with the mounting seat, the mounting seat detachable connection has the middle tube and the inner tube, the lower end of middle tube detachable connection has the cutter, the inner tube is sleeved with the sealing bag in the circumferential side, the inner tube is sealed and is slidably connected with the sealing disc, the mounting seat, the inner tube and the sealing disc jointly constitute the liquid storage cavity, the sealing bag is fixed with the filling bag, the present application is by controlling the fluid in the liquid storage cavity into the filling bag between sealing bag, make the filling bag deformation and provide support for the sample of fault, so fill the space between the two samples of fault, keep the soil structure level of fault sample, avoid the problem of low sampling efficiency caused by replacing sampling position again.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to a geological sampling device based on hyperspectral scanning technology. Background Technology

[0002] Geological sampling is a fundamental process involving the systematic collection of samples such as rocks, soil, or minerals to analyze geological characteristics, resource potential, and environmental conditions. Hyperspectral scanning technology, after geological sampling, enables efficient and non-destructive fine spectral analysis of the samples, rapidly identifying mineral types, alteration assemblages, and microstructures, effectively supplementing and deepening the results of field investigations. Currently, triple-tube samplers are commonly used for soil sampling at specific locations and depths. This equipment relies on an external drill pipe to cut through the soil layer while simultaneously squeezing the sample into an inner tube for preservation. However, it is susceptible to the effects of geological tectonic movements, hydrological erosion, or human activities. The soil in the sampling area may contain cavities. When the sampler passes through the cavity, the sample in the inner tube is prone to displacement or collapse due to the loss of support from the underlying soil. After the sampler enters the soil layer below the cavity, the newly entered sample comes into contact with the existing sample, which destroys the originally clear soil stratification structure. This mixing not only causes cross-contamination between soil layers at different depths, but also obscures the stratification information, resulting in the loss of effective depth markers. In practice, if such problems occur, it is usually necessary to take additional samples or reassess the sampling location, which significantly increases the difficulty of the work and reduces the overall sampling efficiency. Summary of the Invention

[0003] This invention provides a geological sampling device based on hyperspectral scanning technology to overcome the disadvantage that when using a triple tube sampler for geological sampling, if a soil layer with cavities is encountered, the sampling location needs to be changed, resulting in low sampling efficiency.

[0004] The technical implementation scheme of the present invention is as follows: a geological sampling device based on hyperspectral scanning technology, comprising: a mounting shaft, a water supply channel provided inside the mounting shaft, an outer cylinder detachably connected to the mounting shaft, a drill bit detachably connected to the lower end of the outer cylinder, a mounting base rotatably connected to the mounting shaft, a middle cylinder and an inner cylinder detachably connected to the mounting base, a cutter detachably connected to the lower end of the middle cylinder, a sealing bag sleeved around the periphery of the inner cylinder, a sealing disc slidably connected inside the inner cylinder, the sealing disc being fixedly connected to the sealing bag, the mounting base, the inner cylinder, and the sealing disc together forming a liquid storage chamber, a liquid guide hole communicating with the liquid storage chamber being provided at the upper part of the inner cylinder, a filling bag being fixedly connected to the sealing bag, the filling bag being stacked inside the cutter, a detection component for detecting the continuity of the sample inside the inner cylinder being provided inside the cutter, and a traction component for keeping the sample relatively stationary with respect to the soil layer being provided on the mounting base.

[0005] Furthermore, a butyl rubber layer is provided on the outer periphery of the sealed bag to adhere the sealed bag to the filling bag.

[0006] Furthermore, the inner surface of the filling bag is roughened to increase the friction between the filling bag and the sample.

[0007] Furthermore, the detection component includes: a connecting cylinder, which is slidably and sealed within the cutter; the lower part of the filling bag is fixedly connected to the connecting cylinder; annularly distributed elastic flaps are fixedly connected to the upper side of the connecting cylinder; a first clamp is engaged within the cutter; annularly distributed elastic arc plates are fixedly connected between the first clamp and the connecting cylinder; a sealing plate is fixedly connected to the side of the elastic arc plate near the cutter; drain holes are provided on the cutter near the sealing plate; the sealing plate is used to block adjacent drain holes; and fluid is stored in the liquid storage chamber and between the middle cylinder and the inner cylinder.

[0008] Furthermore, the force required to bend the elastic flap is greater than the force required to bend the elastic arc sheet.

[0009] Furthermore, when the sealing sheet blocks the adjacent drain holes, the minimum distance between the elastic flap and the inner cylinder in the direction of the inner cylinder's central axis is greater than the sum of the thicknesses of the sealing bag and the filling bag.

[0010] Furthermore, the traction assembly includes: a mounting bracket fixed to the lower side of the mounting base; the mounting bracket is threadedly connected to a threaded component; a connecting rod is fixedly connected to the upper side of the threaded component; the connecting rod passes through the mounting base and is slidably and rotatably connected to the mounting shaft; the upper part of the connecting rod is located within the water supply channel and is fixedly connected to a helical component; a pull rope is fixedly connected to the threaded component; the pull rope is used to traction the sealing disc to move.

[0011] Furthermore, a folding groove is provided on the side of the elastic flap near the central axis of the cutter to facilitate bending of the elastic flap.

[0012] Furthermore, the elastic flap is curved on the side near the central axis of the cutter and on the lower side of the inner cylinder, which facilitates the sliding of the elastic flap relative to the filling bag and the sliding of the sealing bag relative to the inner cylinder.

[0013] Furthermore, a second clamp is engaged inside the cutter, and a ring of T-shaped members are fixedly connected to the inner side of the second clamp. An elastic strip is fixedly connected to the side of the T-shaped members away from the second clamp, and the elastic strip contacts the filling bag to keep the filling bag taut.

[0014] The present invention discloses the following technical effects: The present invention controls the fluid in the storage chamber to enter between the filling bag and the sealing bag, so that the filling bag deforms and provides support for the sample of the fault. In this way, the space between the two sections of the sample of the fault is filled, the soil structure layer of the fault sample is maintained, and the problem of low sampling efficiency caused by changing the sampling position is avoided.

[0015] The continuous or discontinuous state of the sample is sensed by the compression of the elastic flap inside the cutter. When the sample is discontinuous, the drainage hole is blocked by the sealing plate to change the flow path of the water. This causes the water to deform the part of the filling bag and enter the inside of the cutter. In this way, the filling bag fills the space between the two sections of the discontinuous sample, maintaining the soil structure layers of the sample.

[0016] Powered by the impact of water flow on the spiral component in the water supply channel, the threaded component is driven to wind up the rope, thereby pulling the sealed bag to slide relative to the inner cylinder, maintaining the relative static state of the sample in the inner cylinder and the original soil layer. Thus, even when a fault sample appears, the soil structure layers between the two sections of the fault sample can still be maintained. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the mounting base and the middle cylinder of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the inner cylinder and sealing bag of the present invention;

[0020] Figure 4 This is a three-dimensional structural cross-sectional view of the mounting shaft and mounting base of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the sealing disc and pull rope of the present invention;

[0022] Figure 6 This is a three-dimensional structural cross-sectional view of the sealing bag and filling bag of the present invention;

[0023] Figure 7 Appendix to this invention Figure 6 Enlarged view of point A in the middle;

[0024] Figure 8 This is a three-dimensional structural diagram of the second clamp and T-shaped component of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the filling bag supporting the sample according to the present invention.

[0026] In the diagram: 1. Mounting shaft, 101. Water supply channel, 2. Outer cylinder, 3. Drill bit, 4. Mounting base, 5. Middle cylinder, 6. Cutting blade, 601. Drain hole, 7. Inner cylinder, 701. Liquid storage chamber, 702. Liquid guide hole, 8. Sealing bag, 9. Sealing disc, 10. Filling bag, 11. Connecting cylinder, 12. Elastic folding piece, 121. Convenient folding groove, 13. First clamp, 14. Elastic arc piece, 15. Sealing piece, 16. Mounting bracket, 17. Threaded part, 171. Connecting rod, 172. Spiral part, 18. Pull rope, 19. Second clamp, 20. T-shaped part, 21. Elastic strip. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1

[0028] This embodiment provides a geological sampling device based on hyperspectral scanning technology to solve the problem of low sampling efficiency when encountering soil layers with cavities during geological sampling using a triple tube sampler, which necessitates changing the sampling location.

[0029] refer to Figures 1 to 6A geological sampling device based on hyperspectral scanning technology includes: a mounting shaft 1, an outer cylinder 2 detachably connected to the mounting shaft 1, a drill bit 3 detachably connected to the lower end of the outer cylinder 2, a mounting base 4 rotatably connected to the mounting shaft 1, a middle cylinder 5 and an inner cylinder 7 detachably connected to the mounting base 4, and a cutter 6 detachably connected to the lower end of the middle cylinder 5. The mounting shaft 1, outer cylinder 2, drill bit 3, mounting base 4, middle cylinder 5, cutter 6, and inner cylinder 7 together constitute a triple-tube sampler in the prior art; a water supply channel 1 is provided inside the mounting shaft 1. 01. The water supply channel 101 is used to transport surface water to the area between the drill bit 3 and the cutter 6 to cool the cutter 6 during drilling. A sealing bag 8 is fitted around the periphery of the inner cylinder 7. Initially, the cross-section of the sealing bag 8 is U-shaped, and an elastic rope is connected to the upper end of the sealing bag 8. The diameter of the elastic rope when not under tension is half the inner diameter of the inner cylinder 7. A sealing disc 9 is slidably connected inside the inner cylinder 7. The lower side of the sealing disc 9 is fixedly connected to the sealing bag 8 by snap-fitting, adhesive, or other methods. The mounting base 4 and the inner cylinder... 7 and the sealing disc 9 together form a liquid storage chamber 701. The upper part of the inner cylinder 7 is provided with annularly distributed liquid guide holes 702 that communicate with the liquid storage chamber 701. Fluid, which can be water, is stored between the liquid storage chamber 701, the middle cylinder 5, and the inner cylinder 7. A filling bag 10 is fixedly connected to the sealing bag 8. The filling bags 10 are stacked inside the cutter 6. Both the sealing bag 8 and the filling bag 10 are made of flexible, high-strength, and waterproof material. Here, a polyester filament woven fabric that has undergone post-forming treatment is used. The axial length of the filling bag 10 after unfolding is... The axial length of the inner cylinder 7 is greater than that of the inner cylinder 7, while the axial length of the sealed bag 8 after unfolding is less than that of the inner cylinder 7. The inner surface of the filling bag 10 is roughened to increase the friction between the filling bag 10 and the sample. The cutter 6 is equipped with a detection component for detecting the continuity of the sample in the inner cylinder 7, and the mounting base 4 is equipped with a traction component for keeping the sample and the soil layer relatively stationary. The outer periphery of the sealed bag 8 is provided with a butyl rubber layer to allow the sealed bag 8 and the filling bag 10 to adhere together when in contact.

[0030] The above setup enables the fluid in the storage chamber 701 to enter between the filling bag 10 and the sealing bag 8, causing the filling bag 10 to deform and provide support for the sample of the fault. This fills the space between the two sections of the fault sample, maintains the soil structure layers of the fault sample, and avoids the problem of low sampling efficiency caused by changing the sampling location.

[0031] refer to Figures 5 to 7The detection assembly includes: a connecting cylinder 11, which is slidably connected to the cutter 6; the lower part of the filling bag 10 is fixedly connected to the connecting cylinder 11 to prevent water between the middle cylinder 5 and the inner cylinder 7 from entering the inner side of the cutter 6 through the gap between the filling bag 10 and the connecting cylinder 11; annularly distributed elastic flaps 12 are fixedly connected to the upper side of the connecting cylinder 11; a first clamp 13 is clamped inside the cutter 6; annularly distributed elastic arc plates 14 are fixedly connected between the first clamp 13 and the connecting cylinder 11; a sealing plate 15 is fixedly connected to the side of the elastic arc plate 14 near the cutter 6; and drain holes 601 are provided on the cutter 6 near the sealing plate 15. The sealing plate 15 is used to block adjacent drain holes 601.

[0032] refer to Figure 7 With the sealing plate 15 blocking the adjacent drain hole 601, the minimum distance between the elastic flap 12 and the inner cylinder 7 in the direction of the central axis of the inner cylinder 7 is greater than the sum of the thicknesses of the sealing bag 8 and the filling bag 10, so that the filling bag 10 can move to the inside of the cutter 6 without sticking to the sealing bag 8 under the pressure of water between the middle cylinder 5 and the inner cylinder 7; the force required to bend the elastic flap 12 is greater than the force required to bend the elastic arc plate 14.

[0033] The above setup enables the continuous or discontinuous state of the sample to be sensed by the compression of the elastic flap 12 by the sample entering the cutter 6. When the sample is discontinuous, the drainage hole 601 is blocked by the sealing piece 15 to change the flow path of the water, causing the water to deform the part of the filling bag 10 and enter the inside of the cutter 6. In this way, the filling bag 10 is used to fill the space between the two discontinuous sections of the sample, maintaining the soil structure layers of the sample.

[0034] refer to Figure 4 and Figure 5 The traction assembly includes: a mounting bracket 16, fixed to the lower side of the mounting base 4; a threaded member 17 is threadedly connected to the mounting bracket 16; a connecting rod 171 is fixedly connected to the upper side of the threaded member 17; the connecting rod 171 passes through the mounting base 4 and is slidably and rotatably connected to the mounting shaft 1; the upper part of the connecting rod 171 is located in the water supply channel 101 and is fixedly connected to a helical member 172; the helical member 172 is used to rotate under the impact of water flow in the water supply channel 101; a pull rope 18 is fixedly connected to the threaded member 17; the number of pull ropes 18 can be two symmetrically distributed; the pull ropes 18 are used to pull the sealing disc 9 to move; a blind hole is provided in the lower part of the mounting shaft 1; the blind hole of the mounting shaft 1 is used for the threaded member 17 to enter the blind hole after winding the pull rope 18.

[0035] The above setup enables the spiral component 172 to be driven by the impact of the water flow in the water supply channel 101, which in turn drives the threaded component 17 to wind up the rope 18, thereby pulling the sealing bag 8 to slide relative to the inner cylinder 7, maintaining the relative static state of the sample in the inner cylinder 7 and the original soil layer, and thus maintaining the soil structure layers between the two sections of the fault sample when a fault sample appears.

[0036] Sampling process: Determine the sampling depth at the sampling location, use a drilling rig to form a sampling hole, so that the device can directly sample the soil layer at the sampling depth. Then connect the mounting shaft 1 to the drilling rig, and use the drilling rig to insert the device into the sampling depth of the sampling hole. At this time, the cutter 6 contacts the soil layer to be sampled. Determine the water flow rate in the water supply channel 101 and the feed speed of the mounting shaft 1 according to the thread pitch of the threaded part 17 and the diameter of the threaded part 17, so that the downward movement speed of the mounting shaft 1 is consistent with the upward movement speed of the sealing plate 9 relative to the inner cylinder 7.

[0037] The mounting shaft 1 is controlled to rotate and move downwards at a constant speed. During the rotation of the mounting shaft 1, the mounting shaft 1 drives the outer cylinder 2 and the drill bit 3 to rotate and continuously feed downwards. The mounting base 4, the middle cylinder 5, the cutter 6 and the inner cylinder 7 only feed downwards under the action of the friction between the cutter 6 and the soil layer. During the downward movement of the cutter 6, part of the soil layer enters the cutter 6 and becomes a columnar sample. When the sample contacts the elastic flap 12 (i.e., after the distance between the lower side of the cutter 6 and the elastic flap 12 is reduced by one step), water is supplied to the water supply channel 101, so that the water flow in the water supply channel 101 drives the spiral component 172 to rotate. The spiral component 172 drives the threaded component 17 to rotate through the connecting rod 171. The threaded component 17 winds up the pull rope 18 and uses the pull rope 18 to pull the sealing disc 9 to move, so that the sealing disc 9 moves upwards relative to the inner cylinder 7, but remains stationary relative to the soil layer.

[0038] After the sample contacts the elastic flap 12 and the sealing disc 9 begins to move upward relative to the inner cylinder 7: as the inner cylinder 7 moves downward, the sample squeezes the elastic flap 12, causing the elastic flap 12 and the connecting cylinder 11 to move upward relative to the inner cylinder 7. The elastic flap 12 contacts the filling bag 10 and stops moving upward, actively squeezing the filling bag 10 towards the sealing bag 8 to ensure the adhesion between the sealing bag 8 and the filling bag 10. At the same time, the connecting cylinder 11 pulls the elastic arc plate 14 to bend, and the elastic arc plate 14 drives the sealing plate 15 to move and release the blockage of the drain hole 601. Subsequently, the elastic flap 12 bends under the pressure of the sample. After the sample passes the elastic flap 12, it continues to move deeper into the inner cylinder 7. In the subsequent state, the elastic flap 12 always has an upward tendency under the action of friction between the sample and it. However, since the elastic flap 12 cannot continue to move upward, the relative positions of the elastic flap 12, the connecting cylinder 11 and the cutter 6 all remain stationary.

[0039] After the sample comes into contact with the elastic flap 12 and the sealing disc 9 begins to move upward relative to the inner cylinder 7: as the sealing disc 9 moves upward relative to the inner cylinder 7, the water in the liquid storage chamber 701 is squeezed between the middle cylinder 5 and the inner cylinder 7 through the liquid guide hole 702, so that the water between the middle cylinder 5 and the inner cylinder 7 is discharged through the drain hole 601 to the space between the cutter 6 and the drill bit 3.

[0040] During the rotation of the threaded part 17, the threaded part 17 moves upward at a constant speed relative to the mounting bracket 16 due to the influence of the thread between it and the mounting bracket 16. This causes the position of the pull rope 18 winding around the outside of the threaded part 17 to keep changing, preventing the outer diameter of the position where the threaded part 17 winds around the pull rope 18 from changing and affecting the speed of winding the pull rope 18.

[0041] As the sealing disc 9 moves upward relative to the inner cylinder 7, the sealing disc 9 pulls the sealing bag 8 and the filling bag 10 to move together, causing the sealing bag 8 to flip into the inner cylinder 7 from the bottom, and the filling bag 10 to move into the inner cylinder 7, so that the filling bag 10 and the sealing bag 8 together wrap the sample entering the inner cylinder 7, and friction is generated between the filling bag 10 and the sample; as the inner cylinder 7 moves downward, the sample, the sealing bag 8, the sealing disc 9 and the filling bag 10 move together into the deeper part of the inner cylinder 7.

[0042] When encountering a cavity, as the inner cylinder 7 moves downward, the sample continues to move deeper into the inner cylinder 7 under the influence of the filling bag 10. After the sample loses contact with the elastic flap 12, the elastic flap 12 recovers under its own elasticity. The elastic flap 12 and the connecting cylinder 11 move downward relative to the cutter 6 under the elastic action of the elastic arc plate 14, increasing the distance between the elastic flap 12 and the inner cylinder 7. The elastic flap 12 no longer actively squeezes the filling bag 10, and the sealing plate 15 re-seals the drain hole 601. Subsequently, as the sealing plate 9 moves upward relative to the inner cylinder 7, water entering from the storage cavity 701 between the middle cylinder 5 and the inner cylinder 7 squeezes the filling bag 10, causing the filling bag 10 to deform into the inner cylinder 7. The filling bag 10 contacts the lower side of the sample, and the elastic flap 12 contacts the filling bag 10 (see reference). Figure 9 (State of filling bag 10).

[0043] After passing through the cavity, a new sample enters the cutter 6 and gradually approaches the elastic flap 12. When the new sample comes into contact with the elastic flap 12, it will also come into contact with the filling bag 10. Subsequently, the sample and the filling bag 10 move together into the inner cylinder 7, and squeeze the elastic flap 12 to move upward relative to the cutter 6 and bend it, thus releasing the seal on the drainage hole 601. In this way, the water storage space is formed between the filling bag 10 and the sealing bag 8 to fill the space between the two sample sections and maintain the soil structure layers of the fault sample.

[0044] When the sealing disc 9 moves to the deepest part of the inner cylinder 7, the sealing bag 8 completely flips over to the inside of the inner cylinder 7, and the elastic rope on the sealing bag 8 pulls the filling bag 10 together. The pulling action of the elastic rope creates an annular groove in the sample inside the inner cylinder 7. Then, the drilling rig is controlled to remove the device along with the sample. During sample removal, the annular groove on the sample facilitates separation from the original soil layer. The drill bit 3 and cutter 6 are then removed sequentially, and the connection between the filling bag 10 and the connecting cylinder 11 is released. The sealing bag 8 and the filling bag 10, along with the sample inside, are then pulled out of the inner cylinder 7. The Velcro is separated, thus completing the sample extraction. Hyperspectral scanning technology is used to analyze the components in the sample. Then, the sealing disc 9 is pulled down, causing the sealing disc 9 to drive the pull rope 18, threaded part 17, connecting rod 171 and spiral part 172 to reset. A new sealing bag 8 is re-attached to the outside of the inner cylinder 7 and connected to the sealing disc 9. The filling bag 10 is re-stacked on the outside of the connecting cylinder 11 and the lower part of the filling bag 10 is connected to the connecting cylinder 11, so that the filling bag 10 and the sealing bag 8 are bonded. The cutter 6 and drill bit 3 are installed in sequence, thus completing the reset operation of the device and continuing the sampling operation at the next location. Example 2

[0045] This embodiment is a further optimization based on Embodiment 1.

[0046] refer to Figure 7 and Figure 9 A folding groove 121 is provided on the side of the elastic flap 12 near the central axis of the cutter 6, which facilitates the elastic flap 12 to bend upward and inhibits the elastic flap 12 from bending downward. In this way, during the deformation of the water-pressed filling bag 10, the elastic flap 12 provides support for the filling bag 10, keeping the filling bag 10 roughly cylindrical. In this way, the filling bag 10 provides support for the fractured sample and maintains the stability of the sample and the sealed bag 8. Example 3

[0047] This embodiment is a further optimization based on embodiment 2.

[0048] refer to Figure 7 The elastic flap 12 is curved on the side near the central axis of the cutter 6 and on the lower side of the inner cylinder 7, which facilitates the sliding of the elastic flap 12 relative to the filling bag 10 and the sliding of the sealing bag 8 relative to the inner cylinder 7. Example 4

[0049] This embodiment is a further optimization based on embodiment 3.

[0050] refer to Figure 5 and Figure 8The cutter 6 has a second clamp 19 inside, and a ring of T-shaped parts 20 are fixedly connected to the inner side of the second clamp 19. An elastic strip 21 is fixedly connected to the side of the T-shaped parts 20 away from the second clamp 19. The T-shaped parts 20 and the elastic strip 21 are integrally injection molded. The elastic strip 21 is made of elastic rubber. The elastic strip 21 is in contact with the filling bag 10. The filling bag 10 is kept taut by the friction between the elastic strip 21 and the filling bag 10.

[0051] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention. Technologies not covered in this invention can be implemented using existing technologies.

Claims

1. A geological sampling device based on hyperspectral scanning technology, characterized in that it includes: The mounting shaft (1) has a water supply channel (101) inside. The mounting shaft (1) is detachably connected to an outer cylinder (2). The lower end of the outer cylinder (2) is detachably connected to a drill bit (3). The mounting shaft (1) is rotatably connected to a mounting base (4). The mounting base (4) is detachably connected to a middle cylinder (5) and an inner cylinder (7). The lower end of the middle cylinder (5) is detachably connected to a cutter (6). A sealing bag (8) is fitted around the periphery of the inner cylinder (7). A sealing disc (9) is slidably connected inside the inner cylinder (7). The sealing disc (9) is fixedly connected to the sealing bag (8). The mounting base (4) and the outer cylinder (2) are rotatably connected to a mounting base (4). The inner cylinder (7) and the sealing plate (9) together form a liquid storage chamber (701). The upper part of the inner cylinder (7) is provided with a liquid guide hole (702) communicating with the liquid storage chamber (701). The liquid storage chamber (701) and the middle cylinder (5) are both filled with fluid, which is water. The sealing bag (8) is fixed with a filling bag (10). The filling bag (10) is stacked inside the cutter (6). The cutter (6) is provided with a detection component for detecting the continuity of the sample inside the inner cylinder (7). The mounting base (4) is provided with a traction component for keeping the sample relatively stationary with the soil layer. The detection component includes: The connecting cylinder (11) is slidably connected to the cutter (6). The lower part of the filling bag (10) is fixed to the connecting cylinder (11) to prevent water between the middle cylinder (5) and the inner cylinder (7) from entering the inner side of the cutter (6) through the gap between the filling bag (10) and the connecting cylinder (11). The upper side of the connecting cylinder (11) is fixed with annularly distributed elastic flaps (12). The cutter (6) is fitted with a first clamp (13). Annularly distributed elastic arc plates (14) are fixed between the first clamp (13) and the connecting cylinder (11). A sealing plate (15) is fixed to the side of the elastic arc plate (14) near the cutter (6). Drainage holes (601) are provided on the cutter (6) near the sealing plate (15). The sealing plate (15) is used to block the adjacent drainage holes (601). The traction assembly includes: Mounting bracket (16) is fixed to the lower side of mounting base (4). Mounting bracket (16) is threaded with threaded component (17). Connecting rod (171) is fixed to the upper side of threaded component (17). Connecting rod (171) passes through mounting base (4) and is sealed and slidably connected to mounting shaft (1). The upper part of connecting rod (171) is located in water supply channel (101) and is fixed with spiral component (172). Spiral component (172) is used to rotate under the impact of water flow in water supply channel (101). Pull rope (18) is fixed to threaded component (17). There are two symmetrically distributed pull ropes (18). Pull rope (18) is used to pull the sealing disc (9) to move. A blind hole is provided in the lower part of mounting shaft (1). The blind hole of mounting shaft (1) is used for threaded component (17) to wind up the pull rope (18) and enter it.

2. The geological sampling device based on hyperspectral scanning technology according to claim 1, characterized in that, The outer periphery of the sealed bag (8) is provided with a butyl rubber layer for adhering the sealed bag (8) to the filling bag (10).

3. The geological sampling device based on hyperspectral scanning technology according to claim 1, characterized in that, The inner surface of the filling bag (10) is roughened to increase the friction between the filling bag (10) and the sample.

4. The geological sampling device based on hyperspectral scanning technology according to claim 1, characterized in that, The force required to bend the elastic flap (12) is greater than the force required to bend the elastic arc (14).

5. The geological sampling device based on hyperspectral scanning technology according to claim 1, characterized in that, With the sealing sheet (15) blocking the adjacent drain hole (601), the minimum distance between the elastic flap (12) and the inner cylinder (7) in the direction of the central axis of the inner cylinder (7) is greater than the sum of the thicknesses of the sealing bag (8) and the filling bag (10).

6. The geological sampling device based on hyperspectral scanning technology according to claim 1, characterized in that, The elastic flap (12) has a folding groove (121) on the side near the central axis of the cutter (6) at the bending point, which facilitates the bending of the elastic flap (12).

7. The geological sampling device based on hyperspectral scanning technology according to claim 6, characterized in that, The elastic flap (12) is arc-shaped on the side near the central axis of the cutter (6) and on the lower side of the inner cylinder (7), which facilitates the sliding of the elastic flap (12) relative to the filling bag (10) and the sliding of the sealing bag (8) relative to the inner cylinder (7).

8. The geological sampling device based on hyperspectral scanning technology according to claim 7, characterized in that, The cutter (6) is fitted with a second clamp (19), and a ring-shaped T-shaped piece (20) is fixedly connected to the inner side of the second clamp (19). An elastic strip (21) is fixedly connected to the side of the T-shaped piece (20) away from the second clamp (19). The elastic strip (21) contacts the filling bag (10) to keep the filling bag (10) taut.

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