Geological sampling device based on hyperspectral scanning technology

Abstract

The invention relates to the technical field of geological exploration, in particular to a geological sampling device based on a hyperspectral scanning technology. Comprising a mounting shaft, the mounting shaft is detachably connected with an outer cylinder, the lower end of the outer cylinder is detachably connected with a drill bit, the mounting shaft is rotatably connected with a mounting seat, the mounting seat is detachably connected with a middle cylinder and an inner cylinder, the lower end of the middle cylinder is detachably connected with a cutter, and the peripheral side of the inner cylinder is sleeved with a sealing bag; a sealing disc is connected into the inner cylinder in a sealed and sliding mode, the installation base, the inner cylinder and the sealing disc jointly form a liquid storage cavity, and the sealing bag is fixedly connected with a filling bag. The fluid in the liquid storage cavity is controlled to enter the space between the filling bag and the sealing bag, so that the filling bag deforms and provides support for a fault sample, the space between two sections of samples of the fault is filled, the soil structure level of the fault sample is kept, and the problem of low sampling efficiency caused by replacement of a sampling position is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological exploration, and particularly to a geological sampling device based on hyperspectral scanning technology. BACKGROUND

[0002] Geological sampling is a basic work of analyzing geological characteristics, resource potential and environmental conditions by systematically collecting rock, soil or mineral samples, and the hyperspectral scanning technology can perform efficient and non-destructive fine spectral analysis on the samples after geological sampling, quickly identify mineral types, alteration combinations and microstructures, and effectively supplement and deepen field investigation results; currently, a triple-tube sampler is often used to sample soil at a specific location and depth: the device relies on an external drill pipe to cut the soil layer while extruding the sample into the inner tube for storage, however, due to geological structure changes, hydrological erosion or human activities, the soil inside the sampling area may develop 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 lower soil body; after the sampler enters the soil layer below the cavity, the newly entered sample contacts the original sample, causing the original clear soil layer structure to be destroyed; such mixing not only causes cross-contamination of different depth soil layers, but also obscures the sequence information, resulting in the loss of effective depth identification; in practice, if such a problem occurs, the sample usually needs to be supplemented or the sampling location needs to be re-evaluated, which significantly increases the difficulty of work and reduces the overall sampling efficiency. SUMMARY

[0003] The present application provides a geological sampling device based on hyperspectral scanning technology to overcome the problem of low sampling efficiency caused by the need to replace the sampling location when using a triple-tube sampler to sample geological samples in the presence of cavities in the soil layer.

[0004] The technical implementation of the present application is: a geological sampling device based on hyperspectral scanning technology, comprising: a mounting shaft, a water flow channel is arranged in the mounting shaft, the mounting shaft is detachably connected with an outer cylinder, the lower end of the outer cylinder is detachably connected with a drill bit, the mounting shaft is rotationally connected with a mounting seat, the mounting seat is detachably connected with a middle cylinder and an inner cylinder, the lower end of the middle cylinder is detachably connected with a cutter, a sealing bag is sleeved on the side of the inner cylinder, a sealing disc is slidably connected in the inner cylinder, the sealing disc is fixedly connected with the sealing bag, the mounting seat, the inner cylinder and the sealing disc jointly form a liquid storage cavity, the upper part of the inner cylinder is provided with a liquid guide hole communicating with the liquid storage cavity, the sealing bag is fixedly connected with a filling bag, the filling bag is stacked in the cutter, the cutter is provided with a detection assembly for detecting the continuity of the sample in the inner cylinder, and the mounting seat is provided with a traction assembly for keeping the sample and the soil layer relatively stationary.

[0005] Further, a butyl rubber layer is arranged on the outer periphery of the sealing bag to adhere the sealing bag to the filling bag.

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

[0007] Further, the detection assembly comprises a connecting cylinder sealingly connected to the cutter, the lower part of the filling bag is fixed to the connecting cylinder, the upper side of the connecting cylinder is fixed with annularly distributed elastic flaps, the cutter is clamped with a first clamping hoop, the first clamping hoop is fixed with annularly distributed elastic arc flaps between the connecting cylinder, the side of the elastic arc flaps close to the cutter is fixed with a sealing piece, the cutter is provided with drainage holes at the position close to the sealing piece, the sealing piece is used to block the adjacent drainage holes, and the fluid is stored between the liquid storage cavity, the middle cylinder and the inner cylinder.

[0008] Further, the force required to bend the elastic flaps is greater than the force required to bend the elastic arc flaps.

[0009] Further, in the state that the sealing piece blocks the adjacent drainage holes, the minimum distance between the elastic flaps and the inner cylinder in the direction of the central axis of the inner cylinder is greater than the sum of the thicknesses of the sealing bag and the filling bag.

[0010] Further, the traction assembly comprises a mounting bracket fixed to the lower side of the mounting seat, a threaded member threadedly connected to the mounting bracket, a connecting rod fixed to the upper side of the threaded member, the connecting rod sealingly and rotatably connected to the mounting shaft through the mounting seat, a spiral member fixed to the upper part of the connecting rod and located in the water supply channel, and a pull rope fixed to the threaded member, the pull rope being used to pull the sealing disc to move.

[0011] Further, the side of the elastic flaps close to the central axis of the cutter is provided with a folding groove to facilitate the folding of the elastic flaps.

[0012] Further, the side of the elastic flaps close to the central axis of the cutter and the lower side of the inner cylinder are arc-shaped to facilitate the sliding of the elastic flaps relative to the filling bag and the sliding of the sealing bag relative to the inner cylinder.

[0013] Further, the cutter is clamped with a second clamping hoop, the inner side of the second clamping hoop is fixed with annularly distributed T-shaped members, the side of the T-shaped members away from the second clamping hoop is fixed with elastic strips, the elastic strips are in contact with the filling bag to maintain the taut state of the filling bag.

[0014] The application discloses the following technical effects: the application controls the fluid in the liquid storage cavity to enter between the filling bag and the sealing bag, so that the filling bag is deformed and provides support for the sample of the fault, thus filling the space between the two samples of the fault, maintaining the soil structure level of the fault sample, and avoiding the problem of low sampling efficiency caused by replacing the sampling position.

[0015] The continuous or fault state of the sample is perceived by the extrusion of the elastic flaps by the sample entering the cutter, and when the sample is faulted, the drainage hole is blocked by the sealing sheet to change the water flow path, so that the part of the filling bag is deformed and enters the inside of the cutter, thus filling the space between the two samples of the fault with the filling bag, and maintaining the soil structure level of the sample.

[0016] The impact of the water flow in the water supply channel on the screw is used as power to drive the threaded member to wind the pull rope, so as to pull the sealing bag to slide relative to the inner cylinder, maintain the relative static state of the sample in the inner cylinder and the original soil layer, and then when the fault sample appears, the soil structure level between the two samples of the fault can still be maintained. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the application; Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting seat and the middle cylinder of the application; Figure 3 It is a schematic diagram of the three-dimensional structure of the inner cylinder and the sealing bag of the application; Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting shaft and the mounting seat of the application; Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing disc and the pull rope of the application; Figure 6 It is a schematic diagram of the three-dimensional structure of the sealing bag and the filling bag of the application; Figure 7 It is a schematic diagram of the three-dimensional structure of the sealing bag and the filling bag of the application; Figure 6 It is an enlarged view of A in the middle; Figure 8 It is a schematic diagram of the three-dimensional structure of the second clamp and the T-shaped member of the application; Figure 9 It is a schematic diagram of the three-dimensional structure of the filling bag when supporting the sample of the application.

[0018] In the figure: 1, installation shaft, 101, water supply flow channel, 2, outer cylinder, 3, drill bit, 4, mounting seat, 5, middle cylinder, 6, cutter, 601, liquid discharge hole, 7, inner cylinder, 701, liquid storage cavity, 702, liquid guide hole, 8, sealing bag, 9, sealing disc, 10, filling bag, 11, connecting cylinder, 12, elastic folding piece, 121, folding groove, 13, first clamp, 14, elastic arc piece, 15, sealing piece, 16, mounting frame, 17, threaded part, 171, connecting rod, 172, screw part, 18, pull rope, 19, second clamp, 20, T-shaped part, 21, elastic strip. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments. Embodiment 1

[0020] The present embodiment provides a geological sampling device based on hyperspectral scanning technology, which is used to solve the problem of low sampling efficiency caused by the need to replace the sampling position when using a triple-tube sampler to sample geology and encountering a soil layer with a cavity.

[0021] Reference Figures 1 to 6The utility model relates to a geological sampling device based on hyperspectral scanning technology, which comprises a mounting shaft 1, a 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 seat 4 rotationally connected to the mounting shaft 1, a middle cylinder 5 and an inner cylinder 7 detachably connected to the mounting seat 4, a cutter 6 detachably connected to the lower end of the middle cylinder 5, and the mounting shaft 1, the outer cylinder 2, the drill bit 3, the mounting seat 4, the middle cylinder 5, the cutter 6 and the inner cylinder 7 together constitute a triple-tube sampler in the prior art. A water supply channel 101 is arranged in the mounting shaft 1, which is used to deliver surface water to the space between the drill bit 3 and the cutter 6, so as to cool the cutter 6 during the drilling process. A sealing bag 8 is sleeved around the outer side of the inner cylinder 7. The cross section of the sealing bag 8 is U-shaped at the beginning. The upper end of the sealing bag 8 is connected to an elastic rope, which has a diameter of half the inner diameter of the inner cylinder 7 when not under stress. A sealing disc 9 is sealingly and slidingly connected in the inner cylinder 7. The lower side of the sealing disc 9 is fixedly connected to the sealing bag 8 by clamping, bonding or other methods. The mounting seat 4, the inner cylinder 7 and the sealing disc 9 together constitute a liquid storage cavity 701. The upper part of the inner cylinder 7 is provided with annularly distributed liquid guide holes 702 which are in communication with the liquid storage cavity 701. Fluids are stored between the liquid storage cavity 701 and the middle cylinder 5 and the inner cylinder 7. The fluids can be water. The sealing bag 8 is fixedly connected to a filling bag 10, which is stacked in the cutter 6. The sealing bag 8 and the filling bag 10 are made of flexible and high-strength water-tight materials. In this case, polyester filament woven cloth that has been subjected to post-shaping treatment is selected. The axial length of the filling bag 10 after being unfolded is greater than the axial length of the inner cylinder 7, and the axial length of the sealing bag 8 after being unfolded is less than the axial length 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 provided with a detection assembly for detecting the continuity of the sample in the inner cylinder 7. The mounting seat 4 is provided with a traction assembly for keeping the sample and the soil layer relatively stationary. A butyl rubber layer is arranged on the outer periphery of the sealing bag 8, which is used to make the sealing bag 8 and the filling bag 10 adhere to each other when they are in contact.

[0022] The above arrangement can achieve the following effects. By controlling the fluid in the liquid storage cavity 701 to enter between the filling bag 10 and the sealing bag 8, the filling bag 10 is deformed and provides support for the faulted sample. In this way, the space between the two samples of the fault is filled, the soil structure hierarchy of the faulted sample is maintained, and the problem of low sampling efficiency caused by the replacement of the sampling position is avoided.

[0023] Reference Figures 5 to 7The detection assembly comprises a connecting cylinder 11 sealingly and slidably connected in the cutter 6, the lower part of the filling bag 10 is fixedly connected with the connecting cylinder 11, so as 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 fixedly connected with annularly distributed elastic folding pieces 12, the cutter 6 is clamped with a first clamping hoop 13, the first clamping hoop 13 is fixedly connected with annularly distributed elastic arc pieces 14 between the connecting cylinder 11, the side close to the cutter 6 of the elastic arc pieces 14 is fixedly connected with a sealing piece 15, the position close to the sealing piece 15 of the cutter 6 is provided with a drainage hole 601, and the sealing piece 15 is used for plugging the adjacent drainage hole 601.

[0024] With reference to Figure 7 In the state that the sealing piece 15 plugs the adjacent drainage hole 601, the minimum distance between the elastic folding piece 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 inner side of the cutter 6 without being adhered to the sealing bag 8 under the extrusion of water between the middle cylinder 5 and the inner cylinder 7; and the force required for the elastic folding piece 12 to be bent is greater than the force required for the elastic arc piece 14 to be bent.

[0025] The above arrangement can realize that the continuous or fault state of the sample is perceived by the extrusion of the sample into the cutter 6 to the elastic folding piece 12, in the case of sample fault, the drainage hole 601 is plugged by the sealing piece 15, so as to change the flow path of water, so that the position of the filling bag 10 extruded by water is deformed and enters the inner side of the cutter 6, so that the space between the two samples of the fault is filled by the filling bag 10, and the soil structure level of the sample is maintained.

[0026] With reference to Figure 4 And Figure 5 The traction assembly comprises a mounting frame 16 fixedly connected to the lower side of the mounting seat 4, a threaded member 17 threadedly connected with the mounting frame 16, a connecting rod 171 fixedly connected to the upper side of the threaded member 17, the connecting rod 171 penetrating through the mounting seat 4 and sealingly and rotatably connected with the mounting shaft 1, a spiral member 172 fixedly connected to the upper part of the connecting rod 171 and located in the water supply channel 101, the spiral member 172 being used for rotating under the impact of water flow in the water supply channel 101, a pull rope 18 fixedly connected with the threaded member 17, the number of the pull rope 18 can be two symmetrically distributed, and the pull rope 18 is used for pulling the sealing disc 9 to move, and a blind hole is arranged in the lower part of the mounting shaft 1, and the blind hole of the mounting shaft 1 is used for the threaded member 17 to enter after winding the pull rope 18.

[0027] The above arrangement can realize that the impact of water flow in the water supply channel 101 to the spiral member 172 is used as power to drive the threaded member 17 to wind the pull rope 18, so as to pull the sealing bag 8 to slide relative to the inner cylinder 7, so as to maintain the relative static state of the sample in the inner cylinder 7 and the original soil layer, and then in the case of fault sample, the soil structure level between the two samples of the fault can still be maintained.

[0028] The sampling process: determine the sampling depth at the sampling position, use the drilling machine to form a sampling hole, so that the device can directly sample the soil layer at the sampling depth, then connect the installation shaft 1 with the drilling machine, and use the drilling machine to make the device deep into the sampling hole to the sampling depth, at this time the cutter 6 is in contact with the soil layer to be sampled; determine the flow rate of water in the water flow channel 101 and the feeding speed of the installation shaft 1 according to the pitch of the threads on the surface of the threaded part 17 and the diameter of the threaded part 17, so that the downward movement speed of the installation shaft 1 is consistent with the upward movement speed of the sealing disc 9 relative to the inner cylinder 7.

[0029] Control the rotation and uniform downward movement of the installation shaft 1. In the process of rotation of the installation shaft 1, the installation shaft 1 drives the outer cylinder 2 and the drill bit 3 to rotate and continuously feed downward, and the mounting seat 4, the middle cylinder 5, the cutter 6 and the inner cylinder 7 only feed downward under the action of the friction between the cutter 6 and the soil layer; in the process of downward movement of the cutter 6, part of the soil layer enters the cutter 6 to become a columnar sample, when the sample contacts the elastic folding piece 12 (i.e. after moving a distance of the maximum interval between the lower side of the cutter 6 and the elastic folding piece 12), water is supplied into the water flow channel 101, so that the water flow in the water flow channel 101 drives the spiral part 172 to rotate, the spiral part 172 drives the threaded part 17 to rotate through the connecting rod 171, the threaded part 17 winds the pull rope 18, and the sealing disc 9 is moved by the pull rope 18 to make the sealing disc 9 move upward relative to the inner cylinder 7, but remains stationary relative to the soil layer.

[0030] After the sample contacts the elastic folding piece 12 and the sealing disc 9 starts to move upward relative to the inner cylinder 7: as the inner cylinder 7 moves downward, the sample extrudes the elastic folding piece 12, so that the elastic folding piece 12 and the connecting cylinder 11 move upward relative to the inner cylinder 7, the elastic folding piece 12 contacts the filling bag 10 and stops moving upward, and actively extrudes the filling bag 10 in the direction of the sealing bag 8 to ensure the bonding effect of the sealing bag 8 and the filling bag 10, and the connecting cylinder 11 bends the elastic arc piece 14, which drives the sealing piece 15 to move and unblock the drainage hole 601, then the elastic folding piece 12 is bent under the extrusion of the sample, and the sample continues to move to a deeper part of the inner cylinder 7 after passing through the elastic folding piece 12, and in the subsequent state, the elastic folding piece 12 always has a tendency to move upward under the action of the friction between the sample and it, but the relative positions of the elastic folding piece 12, the connecting cylinder 11 and the cutter 6 remain stationary because the elastic folding piece 12 cannot continue to move upward.

[0031] After the sample contacts the elastic folding piece 12 and the sealing disc 9 starts 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 cavity 701 is extruded 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 to the space between the cutter 6 and the drill bit 3 through the drainage hole 601.

[0032] During the rotation of the screw 17, the screw 17 is uniformly moved up relative to the mounting frame 16 under the influence of the screw thread between the screw 17 and the mounting frame 16, so that the position of the cord 18 winding out of the screw 17 is always changing, preventing the outer diameter of the position of the screw 17 winding the cord 18 from changing and affecting the speed of winding the cord 18.

[0033] During the upward movement of the sealing disc 9 relative to the inner cylinder 7, the sealing disc 9 pulls the sealing bag 8 and the filling bag 10 to move together, so that the sealing bag 8 is turned inward from the lower part into the inner cylinder 7, and the filling bag 10 moves 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 a friction force is generated between the filling bag 10 and the sample; with the downward movement of the inner cylinder 7, the sample, the sealing bag 8, the sealing disc 9 and the filling bag 10 move together to a deeper part of the inner cylinder 7.

[0034] When encountering a cavity, with the downward movement of the inner cylinder 7, the sample continues to move to a deeper part of the inner cylinder 7 under the driving of the filling bag 10, and after the sample loses contact with the elastic flap 12, the elastic flap 12 restores under the elastic action of itself, the elastic flap 12 and the connecting cylinder 11 move downward relative to the cutter 6 under the elastic action of the elastic arc piece 14, so that the distance between the elastic flap 12 and the inner cylinder 7 increases, the elastic flap 12 no longer actively extrudes the filling bag 10, and the sealing piece 15 re-seals the drainage hole 601. Thereafter, with the upward movement of the sealing disc 9 relative to the inner cylinder 7, the water in the liquid storage cavity 701 entering between the middle cylinder 5 and the inner cylinder 7 extrudes the filling bag 10, so that the filling bag 10 deforms inwardly 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 (for the state of the filling bag 10 in the middle). Figure 9

[0035] When passing through the cavity, a new section of the sample enters the cutter 6 and gradually approaches the elastic flap 12, and when the new sample contacts the elastic flap 12, it will contact the filling bag 10, and then the sample and the filling bag 10 move together to a deeper part of the inner cylinder 7 and extrude the elastic flap 12 to bend upward relative to the cutter 6, thereby re-removing the sealing of the drainage hole 601. Thus, the water storage space formed between the filling bag 10 and the sealing bag 8 is used to fill the space between the two sections of the sample, so as to maintain the soil structure hierarchy of the fault sample.

[0036] ​When the sealing disc 9 is moved to the deepest part of the inner cylinder 7, the sealing bag 8 is completely turned to the inner side of the inner cylinder 7, and the elastic rope on the sealing bag 8 gathers the filling bag 10, and the sample in the inner cylinder 7 is gathered out of an annular groove by the gathering effect of the elastic rope, then the drilling machine is controlled to take out the device together with the sample, in the process of taking out the sample, the annular groove on the sample facilitates the separation of the sample from the original soil layer; the drill bit 3 and the cutter 6 are removed in turn, and the connection between the filling bag 10 and the connecting cylinder 11 is released, then the sealing bag 8 and the filling bag 10 are taken out from the inner cylinder 7 together with the sample inside, the magic tape between the sealing bag 8 and the sealing disc 9 is separated, thus the taking out of the sample is completed, and the composition in the sample is analyzed by using the hyperspectral scanning technology; then the sealing disc 9 is pulled down, so that the sealing disc 9 drives the pull rope 18, the threaded part 17, the connecting rod 171 and the spiral part 172 to reset, a new sealing bag 8 is sleeved outside the inner cylinder 7 again, and the sealing bag 8 is connected with the sealing disc 9, the filling bag 10 is stacked outside the connecting cylinder 11 again, and the lower part of the filling bag 10 is connected with the connecting cylinder 11, so that the filling bag 10 is bonded with the sealing bag 8, the cutter 6 and the drill bit 3 are installed in place in turn, and thus the resetting operation of the device is completed, and the sampling operation at the next site is continued. Embodiment 2

[0037] This embodiment is further optimized on the basis of embodiment 1.

[0038] Reference Figure 7 and Figure 9 The side of the elastic flap 12 close to the central axis of the cutter 6 is provided with a folding groove 121 close to the central axis of the cutter 6, which facilitates the upward bending of the elastic flap 12 and inhibits the downward bending of the elastic flap 12, so that the elastic flap 12 provides support for the filling bag 10 during the deformation of the filling bag 10 caused by water extrusion, and the filling bag 10 is maintained in a substantially cylindrical shape, so that the filling bag 10 provides support for the sample of the fault, and the stability of the position of the sample and the sealing bag 8 is maintained. Embodiment 3

[0039] This embodiment is further optimized on the basis of embodiment 2.

[0040] Reference Figure 7 The side of the elastic flap 12 close to the central axis of the cutter 6 and the lower side of the inner cylinder 7 are arc-shaped, 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. Embodiment 4

[0041] This embodiment is further optimized on the basis of embodiment 3.

[0042] Reference Figure 5 and Figure 8The second clamping hoop 19 is clamped in the cutter 6, and the T-shaped members 20 distributed in a ring shape are fixed to the inner side of the second clamping hoop 19. The elastic strips 21 are fixed to the side of the T-shaped members 20 away from the second clamping hoop 19, and the T-shaped members 20 and the elastic strips 21 are integrally injection molded. The elastic strips 21 are made of elastic rubber material, and the elastic strips 21 contact the filling bag 10. The filling bag 10 is kept in a taut state by the friction force between the elastic strips 21 and the filling bag 10.

[0043] The above examples only illustrate the technical idea of the present application, and cannot limit the protection scope of the present application. Any modification made according to the technical idea of the present application on the basis of the technical scheme falls within the protection scope of the present application. The technologies not involved in the present application can be realized by the prior art.

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 slidably connected to the inner cylinder. The sealing bag (8) is fixedly connected. The 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 sealing bag (8) is fixedly connected 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.

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 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). An annularly distributed elastic flap (12) is fixed to the upper side of the connecting cylinder (11). A first clamp (13) is clamped inside the cutter (6). An annularly distributed elastic arc plate (14) is 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). A drain hole (601) is provided on the cutter (6) near the sealing plate (15). The sealing plate (15) is used to block the adjacent drain holes (601). Fluid is stored in the liquid storage chamber (701) and between the middle cylinder (5) and the inner cylinder (7).

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

6. The geological sampling device based on hyperspectral scanning technology according to claim 4, 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).

7. The geological sampling device based on hyperspectral scanning technology according to claim 1, characterized in that, The traction assembly includes: Mounting bracket (16) is fixed to the lower side of mounting base (4). Mounting bracket (16) is threaded with threaded part (17). A connecting rod (171) is fixed to the upper side of threaded part (17). The 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 screw part (172). A pull rope (18) is fixed to threaded part (17). The pull rope (18) is used to pull the sealing disc (9) to move.

8. The geological sampling device based on hyperspectral scanning technology according to claim 4, characterized in that, The elastic flap (12) is provided with a folding groove (121) on the side near the central axis of the cutter (6) at the bending point, so as to facilitate the bending of the elastic flap (12).

9. The geological sampling device based on hyperspectral scanning technology according to claim 8, 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).

10. The geological sampling device based on hyperspectral scanning technology according to claim 9, 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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