A geological core sampling device and method

Abstract

The application discloses a geological core sampling device and a sampling method, and belongs to the technical field of geological exploration. A longitudinal sampling mechanism is used for longitudinal sampling, a rotating driving unit is fixed to the output end of a longitudinal sampling cylinder to drive the longitudinal sampling cylinder to rotate; the rotating driving unit is arranged in a moving sampling platform; a longitudinal driving unit drives the moving sampling platform and the longitudinal sampling cylinder to move; a moving outer cylinder sleeve is arranged outside the longitudinal sampling cylinder; an outer cylinder driving unit is arranged in a machine base; the upper end of a moving outer cylinder mechanism penetrates through the machine base and is connected with the outer cylinder driving unit to drive the moving outer cylinder to move; a transverse sampling mechanism is used for transverse sampling, a transverse sampling seat is arranged between the moving outer cylinder and the longitudinal sampling cylinder; a fixed sampling platform is fixed above the machine base; the lower end of a longitudinal moving unit is connected with the transverse sampling seat to drive the transverse sampling seat to move; a transverse sampling cylinder and a transverse sampling driving unit are arranged in the transverse sampling seat; and the transverse sampling driving unit is used for driving the transverse sampling cylinder to move transversely.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of geological exploration, and more particularly relates to a geological core sampling device and a sampling method. BACKGROUND

[0002] Geological exploration is an investigation and research activity of determining potential resource enrichment layers, determining mineral types and enrichment degrees, etc. by means of various geophysical and geochemical means and methods to explore energy mineral resources such as oil and gas and metals. In the process of exploring energy mineral resources such as oil and gas, geological data required for drilling design is provided to investigate and research the geological conditions of rocks, strata, structures, mineral resources, hydrology, and landforms in a certain area in order to find out the characteristics of reservoirs and oil and gas conditions and the technical conditions for exploitation and utilization. In the process of geological exploration, the underground core needs to be sampled in order to analyze the lithological characteristics, mineral composition, physical characteristics, and oil and gas conditions of the core. However, the existing core sampler does not have the function of taking out the sample. When the core sample is taken out from the drill barrel, the drill barrel needs to be taken down first, and then the manual pulling and knocking form is used. The coring process is time-consuming and laborious, and excessive force in knocking can easily cause the fracture of the core sample, which is not conducive to the complete taking out of the core sample. And in the process of knocking, the core sample is easy to fracture at the junction of two layers of geological cores, which leads to the fact that the specific conditions of the junction of two layers of geological cores cannot be correctly observed during the research. At this time, the side wall sampling technology needs to be used to supplement the core. The existing sampling equipment has the problems of low sampling efficiency, incomplete and continuous core, and difficulty in obtaining complete rock layer over sample after single sampling and tripping in, and therefore, it is urgent to make a device that can take out the core sample once downhole and supplement the cross section with the horizontal core sample to solve the above problems. SUMMARY

[0003] Therefore, the present application provides a geological core sampling device and a sampling method, which adopts the following technical scheme:

[0004] The geological core sampling device comprises a base, a frame, a longitudinal sampling mechanism, a transverse sampling mechanism and a movable outer cylinder mechanism; the base is arranged on the ground and is used for supporting the whole device; the frame is arranged above the base and is used for supporting the longitudinal sampling mechanism, the transverse sampling mechanism and the movable outer cylinder mechanism; the longitudinal sampling mechanism is used for longitudinal sampling of a geological core and comprises a longitudinal sampling cylinder, a rotary driving unit, a movable sampling platform and a longitudinal driving unit; the rotary driving unit is fixedly connected to the output end of the longitudinal sampling cylinder and is used for driving the longitudinal sampling cylinder to rotate; the rotary driving unit is arranged inside the movable sampling platform; the longitudinal driving unit is arranged inside one side of the frame and is used for driving the movable sampling platform and the longitudinal sampling cylinder to move up and down; the movable outer cylinder mechanism comprises a movable outer cylinder and an outer cylinder driving unit; the movable outer cylinder is arranged outside the longitudinal sampling cylinder; the outer cylinder driving unit is arranged inside the base; the upper end of the movable outer cylinder mechanism penetrates through the base and is connected to the outer cylinder driving unit, and is used for driving the movable outer cylinder to move up and down; the transverse sampling mechanism is used for transverse sampling and comprises a transverse sampling seat, a fixed sampling platform, a transverse sampling cylinder, a transverse sampling driving unit and a longitudinal moving unit; the transverse sampling seat is arranged between the movable outer cylinder and the longitudinal sampling cylinder; the fixed sampling platform is fixedly arranged above the base; the longitudinal moving unit is arranged on the fixed sampling platform and is connected to the lower end of the transverse sampling seat and is used for driving the transverse sampling seat to move up and down; the transverse sampling cylinder and the transverse sampling driving unit are arranged inside the transverse sampling seat; the transverse sampling driving unit is used for driving the transverse sampling cylinder to move transversely.

[0005] Further, the frame comprises two vertical columns arranged symmetrically and slidably connected to the two sides of the movable sampling platform; the longitudinal driving unit is arranged in one of the vertical columns and comprises a third motor, a driving sprocket and a driven sprocket; a transmission block is fixedly arranged outside the movable sampling platform; the output end of the third motor is fixedly connected to the rotation shaft of the driving sprocket; the driving sprocket and the driven sprocket are connected through a chain transmission; the chain between the driving sprocket and the driven sprocket penetrates through the transmission block and is in meshing transmission with the teeth of the transmission block.

[0006] Further, the rotary driving unit comprises a first driving gear, a first driven gear and a first motor; the first driven gear is arranged outside the longitudinal sampling cylinder and is fixedly connected to the longitudinal sampling cylinder; the first driven gear is in meshing transmission with the first driving gear; the output end of the first motor is fixedly connected to the rotation shaft of the first driving gear.

[0007] Further, the longitudinal sampling cylinder is hollow and arranged through the moving sampling platform; the lower side of the longitudinal sampling cylinder is provided with a spiral cutting blade for downward excavation, and the lower end is provided with a sharp tooth for breaking the rock surface; the inner side of the lower part of the moving outer cylinder is provided with an inclined cleaning blade for cleaning the cutting blade.

[0008] Further, the upper side of the moving outer cylinder is provided with an external thread; the outer cylinder driving unit comprises a second driving gear, a second driven gear and a second motor; the output end of the second motor is fixedly connected with the rotating shaft of the second driving gear; the second driven gear is in meshing transmission with the second driving gear; the second driven gear is sleeved on the moving outer cylinder and threadedly connected with the moving outer cylinder.

[0009] Further, the longitudinal moving unit comprises two groups of longitudinal moving assemblies connected to the two sides of the horizontal sampling seat; the longitudinal moving assembly comprises a supporting roller and a winch; the supporting roller is arranged inside the fixed sampling platform through a supporting seat, and the winch connects the horizontal sampling seat through a cable; the middle part of the cable is supported by the supporting roller to keep the cable vertically arranged.

[0010] Further, a plurality of through holes adapted to the horizontal sampling cylinder are formed in the side wall of the moving outer cylinder for horizontal sampling of the horizontal sampling cylinder; the side surface of the horizontal sampling seat is provided with a through hole adapted to the horizontal sampling cylinder and opposite to the through hole in the moving outer cylinder.

[0011] Further, the horizontal sampling driving unit comprises an upper moving plate, a lower moving plate, three groups of electric telescopic rods, a first connecting rod and a second connecting rod; the upper moving plate and the lower moving plate are both sleeved outside the longitudinal sampling cylinder; the upper moving plate is rotationally connected with the horizontal sampling cylinder through the first connecting rod, and the lower moving plate is rotationally connected with the horizontal sampling cylinder through the second connecting rod; the three groups of electric telescopic rods are uniformly arranged between the upper moving plate and the lower moving plate along the central axis of the longitudinal sampling cylinder for driving the upper moving plate and the lower moving plate to move oppositely so that the horizontal sampling cylinder penetrates through the through holes of the horizontal sampling seat and the moving outer cylinder.

[0012] The sampling method of the geological core sampling device comprises the following steps: erecting the sampling device at a position where sampling is required, starting the second motor to lower the moving outer cylinder, aligning the sampling position, starting the third motor to move the longitudinal sampling cylinder downward along the moving outer cylinder and accurately aligning the sampling position; simultaneously, rotating the longitudinal sampling cylinder downward by operating the first motor and the second motor to perform longitudinal sampling, and taking out the core sample in the longitudinal sampling cylinder above the moving sampling platform; when horizontal sampling is required, the horizontal sampling seat is lowered by the winch at the fixed sampling platform, the horizontal sampling seat is moved downward along the longitudinal sampling cylinder to the position where horizontal sampling is required, the upper moving plate and the lower moving plate are relatively moved by the electric telescopic rod, the horizontal sampling cylinder is pushed out, the horizontal sampling cylinder penetrates the horizontal sampling seat and the moving outer cylinder and extends into the core, a small part of the core sample is cut off, and horizontal sampling is completed.

[0013] The present application has the following advantages:

[0014] The present application provides a geological core sampling device and a sampling method, which can perform longitudinal sampling and horizontal sampling by setting longitudinal sampling mechanism and horizontal sampling mechanism, can obtain longitudinal core sample column and horizontal core sample at the same time, and can supplement the data of longitudinal core sample by using the data of horizontal core sample. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the provided drawings.

[0016] Fig. 1 It is a front structure schematic diagram of the present application.

[0017] Fig. 2 It is a structure schematic diagram of the longitudinal driving unit of the present application.

[0018] Fig. 3 It is a structure schematic diagram of the horizontal sampling seat of the present application.

[0019] In the drawings:

[0020] 1-base; 2-frame; 3-moving outer cylinder; 4-longitudinal sampling cylinder; 5-stand; 6-moving sampling platform; 7-horizontal sampling seat; 8-fixed sampling platform; 9-horizontal sampling cylinder; 10-third motor; 11-driving sprocket; 12-following sprocket; 13-transmission block; 14-supporting roller; 15-winch; 16-upper moving plate; 17-lower moving plate; 18-electric telescopic rod; 19-first connecting rod; 20-second connecting rod. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figs. 1-3 This invention provides a geological core sampling device, including a base 1, a frame 2, a longitudinal sampling mechanism, a transverse sampling mechanism, and a movable outer cylinder mechanism. The base 1 is mounted on the ground to support the entire device; the frame 2 is mounted above the base 1 to support the longitudinal sampling mechanism, the transverse sampling mechanism, and the movable outer cylinder mechanism.

[0023] The longitudinal sampling mechanism is used for longitudinal sampling of geological cores. The longitudinal sampling mechanism includes a longitudinal sampling cylinder 4, a rotary drive unit, a mobile sampling platform 6, and a longitudinal drive unit. The output end of the rotary drive unit is fixedly connected to the longitudinal sampling cylinder 4 and is used to drive the longitudinal sampling cylinder 4 to rotate into the formation. The rotary drive unit is disposed inside the mobile sampling platform 6. The longitudinal drive unit is disposed inside one side of the frame 2. One side of the mobile sampling platform 6 is connected to the longitudinal drive unit, and the other side is slidably connected to the frame 2. The longitudinal drive unit is used to drive the mobile sampling platform 6 to move up and down, thereby driving the longitudinal sampling cylinder 4 to move up and down.

[0024] The frame 2 includes two symmetrically arranged columns 5, each with a longitudinally arranged groove inside. Each column 5 has an opening facing the mobile sampling platform 6 to accommodate it. Each side of the mobile sampling platform 6 has a slider protruding from its edge, extending into the opening of the column 5 and slidingly connected to the groove. The longitudinal drive unit is located in one of the columns 5 and includes a third motor 10, a drive sprocket 11, and a driven sprocket 12. A transmission block 13 is fixedly mounted on the outer side of the slider near the longitudinal drive unit. The output end of the third motor 10 is fixedly connected to the shaft of the drive sprocket 11. The drive sprocket 11 and the driven sprocket 12 are connected by a chain drive. The chain between the drive sprocket 11 and the driven sprocket 12 passes through the transmission block 13 and meshes with the teeth of the transmission block 13, thereby driving the transmission block 13 to move up and down, and thus controlling the up and down movement of the mobile sampling platform 6 and the longitudinal sampling cylinder 4.

[0025] The rotating driving unit comprises a first driving gear, a first driven gear and a first motor; the first driven gear is sleeved outside the longitudinal sampling cylinder 4 and fixedly connected with the longitudinal sampling cylinder 4; the first driven gear is in meshing transmission with the first driving gear; the output end of the first motor is fixedly connected with the rotating shaft of the first driving gear; the first motor drives the first driving gear and the first driven gear to rotate, thereby driving the longitudinal sampling cylinder 4 to rotate.

[0026] The longitudinal sampling cylinder 4 is hollow and penetrates the moving sampling platform 6; the lower side of the longitudinal sampling cylinder 4 is provided with a spiral cutting blade for downward excavation, and the lower end is provided with a sharp tooth part for breaking the rock surface; the core sample obtained by the longitudinal sampling cylinder 4 can be taken out above the moving sampling platform 6.

[0027] The moving outer cylinder mechanism comprises a moving outer cylinder 3 and an outer cylinder driving unit; the moving outer cylinder 3 is sleeved outside the longitudinal sampling cylinder 4; the outer cylinder driving unit is arranged inside the machine base 1; the upper end of the moving outer cylinder mechanism penetrates the machine base 1 and is connected with the outer cylinder driving unit; the outer cylinder driving unit is used for driving the moving outer cylinder 3 to move up and down.

[0028] The lower inner side of the moving outer cylinder 3 is provided with an inclined cleaning blade for cleaning the residual soil on the cutting blade of the longitudinal sampling cylinder 4, so that the excavation is more smooth; the upper part of the moving outer cylinder 3 penetrates the machine base 1 and is provided with a protruding boss at the upper end; the upper outer side of the moving outer cylinder 3 is provided with external threads; the outer cylinder driving unit comprises a second driving gear, a second driven gear and a second motor; the output end of the second motor is fixedly connected with the rotating shaft of the second driving gear; the second driven gear is in meshing transmission with the second driving gear; the center of the second driven gear penetrates and is provided with internal threads matched with the external threads of the moving outer cylinder 3; the second driven gear is sleeved on the moving outer cylinder 3, so that the second driven gear is threadedly connected with the moving outer cylinder 3; the second motor drives the second driving gear and the second driven gear to rotate, thereby driving the moving outer cylinder 3 to move up and down.

[0029] The lateral sampling mechanism is used for lateral sampling and can move to the connection between two geological cores to extract a complete core sample at the connection between the two geological cores; the lateral sampling mechanism comprises a lateral sampling seat 7, a fixed sampling platform 8, a lateral sampling cylinder 9, a lateral sampling driving unit and a longitudinal moving unit; the fixed sampling platform 8 is fixedly arranged above the machine base 1; the longitudinal moving unit is arranged on the fixed sampling platform 8 and connected with the lateral sampling seat 7 at the lower end, and is used for driving the lateral sampling seat 7 to move up and down; the lateral sampling cylinder 9 and the lateral sampling driving unit are arranged inside the lateral sampling seat 7; the lateral sampling driving unit is used for driving the lateral sampling cylinder 9 to move laterally.

[0030] The lateral sampling seat 7 is arranged between the movable outer cylinder 3 and the longitudinal sampling cylinder 4, and is arranged on the surface upper layer by the longitudinal moving unit when lateral sampling is not needed, and the lateral sampling seat 7 below the longitudinal moving unit is used for lateral sampling when lateral sampling is needed. The longitudinal moving unit comprises two groups of longitudinal moving assemblies connected with the two side portions of the lateral sampling seat 7 respectively; the longitudinal moving assembly comprises a supporting roller 14 and a winch 15; the supporting roller 14 is arranged in the fixed sampling platform 8 through a supporting seat, and the winch 15 is connected with the lateral sampling seat 7 through a cable, the middle portion of the cable is supported by the supporting roller 14, and the cable is arranged vertically; the winch 15 in the two groups of longitudinal moving assemblies drives the lateral sampling seat 7 to move up and down to the position required for lateral sampling.

[0031] A plurality of through holes matched with the lateral sampling cylinder 9 are formed in the side wall of the movable outer cylinder 3 and used for lateral sampling of the lateral sampling cylinder 9. The lateral sampling driving unit comprises an upper moving plate 16, a lower moving plate 17, three groups of electric telescopic rods 18, a first connecting rod 19 and a second connecting rod 20; the upper moving plate 16 and the lower moving plate 17 are both sleeved outside the longitudinal sampling cylinder 4; the upper moving plate 16 is rotationally connected with the lateral sampling cylinder 9 through the first connecting rod 19, and the lower moving plate 17 is rotationally connected with the lateral sampling cylinder 9 through the second connecting rod 20; the three groups of electric telescopic rods 18 are arranged axially along the central axis of the longitudinal sampling cylinder 4 between the upper moving plate 16 and the lower moving plate 17, and are used for driving the upper moving plate 16 and the lower moving plate 17 to move oppositely; a through hole matched with the lateral sampling cylinder 9 is formed in the side surface of the lateral sampling seat 7 and is opposite to the through hole on the movable outer cylinder 3. The electric telescopic rod 18 is retracted to drive the upper moving plate 16 and the lower moving plate 17 to move oppositely, so that the lateral sampling cylinder 9 is pushed outwards through the first connecting rod 19 and the second connecting rod 20, the lateral sampling cylinder 9 penetrates through the lateral sampling seat 7 and the movable outer cylinder 3 and extends into the core, a small part of core samples are cut off, and lateral sampling is completed. The electric telescopic rod 18 is extended to retract the lateral sampling cylinder 9, and the winch 15 can drive the lateral sampling seat 7 to be taken out from the movable outer cylinder 3, so that the core samples are taken out.

[0032] The application also provides a sampling method of the geological core sampling device.

[0033] The sampling device is erected at the position where sampling is needed, the second motor is started to lower the moving outer cylinder 3, the longitudinal sampling cylinder 4 is moved downward along the moving outer cylinder 3, and the sampling position is accurately aligned; meanwhile, the first motor and the second motor are operated to rotate the longitudinal sampling cylinder 4 downward to dig and sample longitudinally, and the operator can take out the core sample in the longitudinal sampling cylinder 4 above the moving sampling platform 6. When horizontal sampling is needed, the operator lowers the horizontal sampling seat 7 at the fixed sampling platform 8 by the winch 15, moves the horizontal sampling seat 7 downward along the longitudinal sampling cylinder 4 to the position where horizontal sampling is needed, moves the upper moving plate 16 and the lower moving plate 17 relative to each other by the electric telescopic rod 18, pushes the horizontal sampling cylinder 9 outward, makes the horizontal sampling cylinder 9 penetrate through the horizontal sampling seat 7 and the moving outer cylinder 3 to extend into the core, and cuts a small amount of core sample to complete the horizontal sampling.

[0034] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0035] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A geological core sampling device, characterized in that, The device includes a base (1), a frame (2), a longitudinal sampling mechanism, a transverse sampling mechanism, and a movable outer cylinder mechanism. The base (1) is mounted on the ground to support the entire device. The frame (2) is mounted above the base (1) to support the longitudinal sampling mechanism, the transverse sampling mechanism, and the movable outer cylinder mechanism. The longitudinal sampling mechanism is used for longitudinal sampling of geological cores and includes a longitudinal sampling cylinder (4), a rotary drive unit, a movable sampling platform (6), and a longitudinal drive unit. The output end of the rotary drive unit is fixedly connected to the longitudinal sampling cylinder (4) and is used to drive the longitudinal sampling cylinder (4) to rotate. The rotary drive unit is located inside the movable sampling platform (6). The longitudinal drive unit is located inside one side of the frame (2) and is used to drive the movable sampling platform (6) and the longitudinal sampling cylinder (4) to move up and down. The movable outer cylinder mechanism includes a movable outer cylinder (3) and an outer cylinder drive unit. The movable outer cylinder (3) is fitted onto the longitudinal sampling cylinder (4). External; the outer cylinder drive unit is located inside the base (1); the upper end of the movable outer cylinder (3) passes through the base (1) and is connected to the outer cylinder drive unit, the outer cylinder drive unit is used to drive the movable outer cylinder (3) to move up and down; the transverse sampling mechanism is used for transverse sampling, including a transverse sampling seat (7), a fixed sampling platform (8), a transverse sampling cylinder (9), a transverse sampling drive unit and a longitudinal moving unit; the transverse sampling seat (7) is located between the movable outer cylinder (3) and the longitudinal sampling cylinder (4); the fixed sampling platform (8) is fixed above the base (1); the longitudinal moving unit is located on the fixed sampling platform (8), the lower end of which is connected to the transverse sampling seat (7), and is used to drive the transverse sampling seat (7) to move up and down; the transverse sampling cylinder (9) and the transverse sampling drive unit are located inside the transverse sampling seat (7); the transverse sampling drive unit is used to drive the transverse sampling cylinder (9) to move laterally.

2. The geological core sampling device according to claim 1, characterized in that, The frame (2) includes two symmetrically arranged columns (5), which are slidably connected to both sides of the mobile sampling platform (6); the longitudinal drive unit is located in one of the columns (5) and includes a third motor (10), a drive sprocket (11) and a driven sprocket (12); a transmission block (13) is fixedly provided on the outside of the mobile sampling platform (6); the output end of the third motor (10) is fixedly connected to the shaft of the drive sprocket (11); the drive sprocket (11) and the driven sprocket (12) are connected by chain drive; the chain between the drive sprocket (11) and the driven sprocket (12) passes through the transmission block (13) and meshes with the teeth of the transmission block (13) for transmission.

3. A geological core sampling device according to claim 2, characterized in that, The rotary drive unit includes a first driving gear, a first driven gear, and a first motor; the first driven gear is sleeved outside the longitudinal sampling cylinder (4) and is fixedly connected to the longitudinal sampling cylinder (4); the first driven gear meshes with the first driving gear for transmission; the output end of the first motor is fixedly connected to the shaft of the first driving gear.

4. A geological core sampling device according to claim 3, characterized in that, The longitudinal sampling cylinder (4) is hollow and the upper part passes through the mobile sampling platform (6); the lower side of the longitudinal sampling cylinder (4) is provided with a spiral cutting blade for downward excavation, and the lower end is provided with a sharp tooth for breaking the rock surface; the lower inner side of the mobile outer cylinder (3) is provided with an inclined cleaning plate for cleaning the cutting blade.

5. A geological core sampling device according to claim 4, characterized in that, The upper outer side of the movable outer cylinder (3) is provided with an external thread; the outer cylinder drive unit includes a second driving gear, a second driven gear and a second motor; the output end of the second motor is fixedly connected to the shaft of the second driving gear; the second driven gear meshes with the second driving gear for transmission; the second driven gear is sleeved on the movable outer cylinder (3) and is threadedly connected to the movable outer cylinder (3).

6. A geological core sampling device according to claim 5, characterized in that, The longitudinal moving unit includes two sets of longitudinal moving components, which are respectively connected to the two sides of the transverse sampling seat (7); the longitudinal moving components include a support roller (14) and a winch (15); the support roller (14) is set inside the fixed sampling platform (8) through a support seat, and the winch (15) is connected to the transverse sampling seat (7) through a cable, with the middle of the cable supported by the support roller (14) to keep the cable vertical.

7. A geological core sampling device according to claim 6, characterized in that, The movable outer cylinder (3) has several through holes on its side wall that are adapted to the transverse sampling cylinder (9) for transverse sampling by the transverse sampling cylinder (9); the transverse sampling seat (7) has through holes on its side that are adapted to the transverse sampling cylinder (9) and are opposite to the through holes on the movable outer cylinder (3).

8. A geological core sampling device according to claim 7, characterized in that, The transverse sampling drive unit includes an upper moving plate (16), a lower moving plate (17), three sets of electric telescopic rods (18), a first connecting rod (19), and a second connecting rod (20). The upper moving plate (16) and the lower moving plate (17) are both sleeved on the outside of the longitudinal sampling cylinder (4). The upper moving plate (16) is rotatably connected to the transverse sampling cylinder (9) through the first connecting rod (19), and the lower moving plate (17) is rotatably connected to the transverse sampling cylinder (9) through the second connecting rod (20). The three sets of electric telescopic rods (18) are evenly arranged axially between the upper moving plate (16) and the lower moving plate (17) along the central axis of the longitudinal sampling cylinder (4), and are used to drive the upper moving plate (16) and the lower moving plate (17) to move in opposite directions so that the transverse sampling cylinder (9) passes through the through hole of the transverse sampling seat (7) and the moving outer cylinder (3).

9. The sampling method of the geological core sampling device according to claim 8, characterized in that, The process includes the following steps: First, set up a sampling device at the location where sampling is required. Then, start the second motor to lower the moving outer cylinder (3) and align it with the sampling position. Next, start the third motor to move the longitudinal sampling cylinder (4) downwards along the moving outer cylinder (3) and precisely align it with the sampling position. Simultaneously, operate the first and third motors to rotate the longitudinal sampling cylinder (4) downwards for longitudinal sampling. The core sample inside the longitudinal sampling cylinder (4) is then retrieved above the moving sampling platform (6). When transverse sampling is required... At that time, at the fixed sampling platform (8), the lateral sampling seat (7) is lowered by the winch (15) so that the lateral sampling seat (7) moves down along the longitudinal sampling cylinder (4) to the position where lateral sampling is required. The upper moving plate (16) and the lower moving plate (17) are moved relative to each other by the electric telescopic rod (18) and the lateral sampling cylinder (9) is pushed outward so that the lateral sampling cylinder (9) passes through the lateral sampling seat (7) and the moving outer cylinder (3) and extends into the rock core to cut a small part of the rock core sample and complete the lateral sampling.

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