Geological core sampling device and sampling method

Abstract

The invention discloses a geological core sampling device and method, and belongs to the technical field of geological prospecting, a longitudinal sampling mechanism is used for longitudinal sampling, and the output end of a rotation driving unit is fixedly connected with a longitudinal sampling barrel to drive the longitudinal sampling barrel to rotate; the rotary driving unit is arranged in the movable sampling platform; the longitudinal driving unit drives the movable sampling platform and the longitudinal sampling barrel to move; the movable outer barrel is sleeved outside the longitudinal sampling barrel; the outer cylinder driving unit is arranged in the machine base; the upper end of the movable outer cylinder mechanism penetrates through the base and is connected with the outer cylinder driving unit for driving the movable outer cylinder to move; the transverse sampling mechanism is used for transverse sampling, and a transverse sampling seat is arranged between the movable outer barrel and the longitudinal sampling barrel; the fixed sampling platform is fixedly arranged above the machine base; the lower end of the longitudinal moving unit is connected with the transverse sampling seat for driving the transverse sampling seat to move; the transverse sampling barrel and the transverse sampling driving unit are arranged in the transverse sampling seat; the transverse sampling driving unit is used for driving the transverse sampling barrel to transversely move.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, and more specifically relates to a geological core sampling device and a sampling method. Background Art

[0002] "Geological exploration" refers to the investigation and research activities of exploring energy mineral resources such as oil, natural gas, and metals through various geophysical, geochemical and other means and methods, determining potential resource-rich layers, and determining the types and enrichment levels of minerals. In the process of exploration of energy minerals such as oil and gas, in order to identify the reservoir characteristics and oil and gas content, as well as the technical conditions for exploitation and utilization, and to provide the geological data required for drilling design, the geological conditions such as rocks, strata, structures, minerals, hydrology, and landforms in a certain area are investigated and studied. In the process of geological exploration, it is necessary to sample the core located underground in order to analyze the lithological characteristics, mineral composition, physical characteristics, and oil and gas content of the core. However, the existing core sampler does not have the function of removing samples. When the core sample is taken out of the drill barrel, the drill barrel needs to be removed first, and then manually pulled and knocked. The coring process is laborious and laborious, and excessive knocking can easily cause the core sample to break, which is not conducive to the complete removal of the core sample. In addition, during the tapping process, the core sample is prone to break at the junction of the two layers of geological core, resulting in the inability to correctly observe the specific conditions of the junction of the two layers of geological core during research. At this time, it is necessary to use the sidewall sampling technology to supplement the core. The existing sampling equipment has the problem of low sampling efficiency after a single sampling, and the core is incomplete and continuous, making it difficult to obtain transition samples of the complete rock layer. Therefore, it is urgent to make a device that can take out core samples in one trip down the well and supplement the cross-section with horizontal core samples to solve the above problems. Summary of the invention

[0003] In view of this, the present invention provides a geological core sampling device and a sampling method, which adopts the following technical solutions:

[0004] A geological core sampling device, comprising a machine base, a frame, a longitudinal sampling mechanism, a transverse sampling mechanism and a movable outer cylinder mechanism; the machine base is erected on the ground to support the entire device; the frame is erected above the machine base 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 comprises a longitudinal sampling barrel, a rotation drive unit, a movable sampling platform and a longitudinal drive unit; the output end of the rotation drive unit is fixedly connected to the longitudinal sampling barrel to drive the longitudinal sampling barrel to rotate; the rotation drive unit is arranged inside the movable sampling platform; the longitudinal drive unit is arranged inside one side of the frame to drive the movable sampling platform and the longitudinal sampling barrel to move up and down; the movable outer cylinder mechanism comprises a movable outer cylinder and an outer cylinder drive unit; The outer cylinder is sleeved on the outside of the longitudinal sampling cylinder; the outer cylinder driving unit is arranged inside the machine base; the upper end of the movable outer cylinder mechanism passes through the machine base and is connected to the outer cylinder driving unit, which is used to drive the movable outer cylinder to move up and down; the transverse sampling mechanism is used for transverse sampling, and includes 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 fixed above the machine base; the longitudinal moving unit is arranged on the fixed sampling platform, and the lower end is connected to the transverse sampling seat, which is used to drive 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 to drive the transverse sampling cylinder to move transversely.

[0005] Furthermore, the frame includes two symmetrically arranged columns, which are respectively slidably connected to the two sides of the mobile sampling platform; the longitudinal drive unit is arranged in one of the columns, including a third motor, a driving sprocket and a driven sprocket; a transmission block is fixedly provided on the outside of the mobile sampling platform; the output end of the third motor is fixedly connected to the rotating shaft of the driving sprocket; the driving sprocket and the driven sprocket are connected by chain transmission; the chain between the driving sprocket and the driven sprocket passes through the transmission block and meshes with the teeth of the transmission block for transmission.

[0006] Furthermore, the rotation drive unit includes a first driving gear, a first driven gear and a first motor; the first driven gear is sleeved on the outside of the longitudinal sampling tube and fixedly connected to the longitudinal sampling tube; the first driven gear is meshed with the first driving gear for transmission; the output end of the first motor is fixedly connected to the rotating shaft of the first driving gear.

[0007] Furthermore, the longitudinal sampling barrel is hollow, and the upper part passes through the mobile sampling platform; a spiral cutting blade is arranged on the lower side of the longitudinal sampling barrel for digging downward, and a sharp tooth portion is arranged on the lower end for breaking the rock surface; an inclined cleaning sheet is arranged on the inner side of the lower part of the movable outer barrel for cleaning the cutting blade.

[0008] Furthermore, an external thread is provided on the outer side surface of the upper portion of the movable outer cylinder; the outer cylinder driving 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 rotating shaft of the second driving gear; the second driven gear is meshed with the second driving gear for transmission; the second driven gear is sleeved on the movable outer cylinder and is threadedly connected to the movable outer cylinder.

[0009] Furthermore, the longitudinal moving unit includes two groups of longitudinal moving components, which are respectively connected to the two sides of the transverse sampling seat; the longitudinal moving components include support rollers and winches; the support rollers are arranged inside the fixed sampling platform through the support seats, and the winch is connected to the transverse sampling seat through cables, and the middle part of the cables is supported by support rollers to keep the cables vertically arranged.

[0010] Furthermore, a plurality of through holes matching the transverse sampling tube are provided on the side wall of the movable outer tube for the transverse sampling tube to perform transverse sampling; a through hole matching the transverse sampling tube is provided on the side of the transverse sampling seat, which is opposite to the through hole on the movable outer tube.

[0011] Furthermore, the transverse sampling drive unit includes an upper movable plate, a lower movable plate, three groups of electric telescopic rods, a first connecting rod and a second connecting rod; the upper movable plate and the lower movable plate are both sleeved on the outside of the longitudinal sampling tube; the upper movable plate is rotatably connected to the transverse sampling tube through the first connecting rod, and the lower movable plate is rotatably connected to the transverse sampling tube through the second connecting rod; the three groups of electric telescopic rods are evenly arranged between the upper movable plate and the lower movable plate along the central axis of the longitudinal sampling tube, and are used to drive the upper movable plate and the lower movable plate to move toward each other so that the transverse sampling tube passes through the through hole of the transverse sampling seat and the movable outer tube.

[0012] The sampling method of the geological core sampling device comprises the following steps: setting up the sampling device at the position where sampling is required, first starting the second motor to lower the mobile outer cylinder and align it with the sampling position, and then starting the third motor to move the longitudinal sampling cylinder downward along the mobile outer cylinder and accurately align it with the sampling position; simultaneously operating the first motor and the second motor to rotate the longitudinal sampling cylinder and advance downward to perform longitudinal sampling, and taking out the core sample inside the longitudinal sampling cylinder above the mobile sampling platform; when horizontal sampling is required, at the fixed sampling platform, the horizontal sampling seat is lowered by a winch, so that the horizontal sampling seat moves downward along the longitudinal sampling cylinder to the position where horizontal sampling is required, and the upper movable plate and the lower movable plate are moved relative to each other by an electric telescopic rod, and the horizontal sampling cylinder is pushed outward, so that the horizontal sampling cylinder passes through the horizontal sampling seat and the mobile outer cylinder and extends into the core, a small part of the core sample is intercepted, and the horizontal sampling is completed.

[0013] The beneficial effects of the present invention are:

[0014] The present invention provides a geological core sampling device and a sampling method. By arranging a longitudinal sampling mechanism and a transverse sampling mechanism to perform longitudinal sampling and transverse sampling, a transverse core sample can be obtained while a longitudinal core sample column is obtained, and the transverse core sample data is used to supplement the longitudinal core sample data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the front structure of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the longitudinal drive unit of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the lateral sampling seat of the present invention.

[0019] Among them, in the figure:

[0020] 1- base; 2- frame; 3- movable outer cylinder; 4- longitudinal sampling cylinder; 5- column; 6- movable sampling platform; 7- transverse sampling seat; 8- fixed sampling platform; 9- transverse sampling cylinder; 10- third motor; 11- driving sprocket; 12- driven 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 DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please refer to the attached Figure 1-3 The present invention provides a geological core sampling device, comprising a machine base 1, a frame 2, a longitudinal sampling mechanism, a transverse sampling mechanism and a movable outer cylinder mechanism. The machine base 1 is erected on the ground to support the entire device; the frame 2 is erected above the machine 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, and the longitudinal sampling mechanism includes a longitudinal sampling barrel 4, a rotation drive unit, a mobile sampling platform 6 and a longitudinal drive unit; the output end of the rotation drive unit is fixedly connected to the longitudinal sampling barrel 4, and is used to drive the longitudinal sampling barrel 4 to rotate into the formation; the rotation drive unit is arranged inside the mobile sampling platform 6; the longitudinal drive unit is arranged 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 barrel 4 to move up and down.

[0024] The frame 2 includes two symmetrically arranged columns 5, and the two columns 5 are longitudinally provided with a slide groove inside; the column 5 is opened toward one side of the mobile sampling platform 6 for cooperating with the mobile sampling platform; a slider protruding from the edge of the mobile sampling platform 6 is provided on both sides of the mobile sampling platform 6, and the slider extends into the opening of the column 5 and is slidably connected with the slide groove; the longitudinal driving unit is arranged in one of the columns 5, including a third motor 10, a driving sprocket 11 and a driven sprocket 12; a transmission block 13 is fixedly arranged on the outer side of the slider near one side of the longitudinal driving unit; the output end of the third motor 10 is fixedly connected to the rotating shaft of the driving sprocket 11; the driving sprocket 11 and the driven sprocket 12 are connected by chain transmission; the chain between the driving sprocket 11 and the driven sprocket 12 passes through the transmission block 13, and is meshed with the teeth of the transmission block 13 for transmission, thereby driving the transmission block 13 to move up and down, thereby controlling the mobile sampling platform 6 and the longitudinal sampling cylinder 4 to move up and down.

[0025] The rotation driving unit includes a first driving gear, a first driven gear and a first motor; the first driven gear is sleeved on the outside of the longitudinal sampling barrel 4 and is fixedly connected to the longitudinal sampling barrel 4; the first driven gear is meshed with the first driving gear for transmission; the output end of the first motor is fixedly connected to 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 barrel 4 to rotate.

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

[0027] The movable outer cylinder mechanism comprises a movable outer cylinder 3 and an outer cylinder driving unit; the movable outer cylinder 3 is sleeved on the outside of the longitudinal sampling cylinder 4; the outer cylinder driving unit is arranged inside the machine base 1; the upper end of the movable outer cylinder mechanism passes through the machine base 1 and is connected to the outer cylinder driving unit, and the outer cylinder driving unit is used to drive the movable outer cylinder 3 to move up and down.

[0028] The inner side surface of the lower part of the movable outer cylinder 3 is provided with an inclined cleaning piece, which is used to clean the residual soil on the cutting blade of the longitudinal sampling cylinder 4, so as to make the excavation smoother. The upper part of the movable outer cylinder 3 passes through the machine base 1, and the upper end is provided with a boss protruding outward; the outer side surface of the upper part of the movable outer cylinder 3 is provided with an external thread; the outer cylinder driving 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 rotating shaft of the second driving gear; the second driven gear is meshed with the second driving gear for transmission; the center of the second driven gear is through, and the inner side is provided with an internal thread that matches the external thread of the movable outer cylinder 3, which is sleeved on the movable outer cylinder 3 so that the second driven gear is threadedly connected with the movable outer cylinder 3; the second motor drives the second driving gear and the second driven gear to rotate, thereby driving the movable outer cylinder 3 to move up and down.

[0029] The transverse sampling mechanism is used for transverse sampling, and can move to the connection between two layers of geological cores to extract complete core samples at the connection between the two layers of geological cores; the transverse sampling mechanism includes a transverse sampling seat 7, a fixed sampling platform 8, a transverse sampling tube 9, a transverse sampling drive unit and a longitudinal moving unit; the fixed sampling platform 8 is fixed above the machine base 1; the longitudinal moving unit is arranged on the fixed sampling platform 8, and the lower end 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 tube 9 and the transverse sampling drive unit are arranged inside the transverse sampling seat 7; the transverse sampling drive unit is used to drive the transverse sampling tube 9 to move transversely.

[0030] The transverse sampling seat 7 is arranged between the movable outer cylinder 3 and the longitudinal sampling cylinder 4. When transverse sampling is not required, the transverse sampling seat 7 is pulled by the longitudinal moving unit and arranged on the upper layer of the surface. When transverse sampling is required, the transverse sampling seat 7 below the longitudinal moving unit performs transverse sampling. The longitudinal moving unit includes two groups of longitudinal moving components, which are respectively connected to the two sides of the transverse sampling seat 7; the longitudinal moving components include support rollers 14 and winches 15; the support rollers 14 are arranged inside the fixed sampling platform 8 through support seats, and the winches 15 are connected to the transverse sampling seat 7 through cables, and the middle part of the cables is supported by the support rollers 14 to keep the cables arranged vertically; the winches 15 in the two groups of longitudinal moving components drive the transverse sampling seat 7 to move up and down to the position where transverse sampling is required.

[0031] The side wall of the movable outer cylinder 3 is provided with a plurality of through holes adapted to the transverse sampling cylinder 9, which are used for the transverse sampling cylinder 9 to perform transverse sampling. The transverse sampling drive unit comprises an upper movable plate 16, a lower movable plate 17, three sets of electric telescopic rods 18, a first connecting rod 19 and a second connecting rod 20; the upper movable plate 16 and the lower movable plate 17 are both sleeved on the outside of the longitudinal sampling cylinder 4; the upper movable plate 16 is rotatably connected to the transverse sampling cylinder 9 through the first connecting rod 19, and the lower movable 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 between the upper movable plate 16 and the lower movable plate 17 along the central axis of the longitudinal sampling cylinder 4, and are used to drive the upper movable plate 16 and the lower movable plate 17 to move in opposite directions; the side of the transverse sampling seat 7 is provided with a through hole adapted to the transverse sampling cylinder 9, which is opposite to the through hole on the movable outer cylinder 3. The electric telescopic rod 18 contracts to drive the upper movable plate 16 and the lower movable plate 17 to move relative to each other, thereby pushing out the transverse sampling tube 9 through the first connecting rod 19 and the second connecting rod 20, so that the transverse sampling tube 9 passes through the transverse sampling seat 7 and the movable outer cylinder 3 and extends into the core, intercepting a small part of the core sample, and completing the transverse sampling. The electric telescopic rod 18 extends to retract the transverse sampling tube 9, and the winch 15 can drive the transverse sampling seat 7 to be removed from the movable outer cylinder 3, thereby removing the core sample.

[0032] The present invention also provides a sampling method of the geological core sampling device, the specific steps of which are as follows:

[0033] Set up the sampling device at the position where sampling is required, first start the second motor to lower the mobile outer cylinder 3 and align it with the sampling position, then start the third motor to move the longitudinal sampling cylinder 4 downward along the mobile outer cylinder 3 and accurately align it with the sampling position; at the same time, operate the first motor and the second motor to rotate the longitudinal sampling cylinder 4 and dig downward to perform longitudinal sampling. The operator can take out the core sample inside the longitudinal sampling cylinder 4 above the mobile sampling platform 6. When horizontal sampling is required, the operator lowers the horizontal sampling seat 7 at the fixed sampling platform 8 through the winch 15, so that the horizontal sampling seat 7 moves downward along the longitudinal sampling cylinder 4 to the position where horizontal sampling is required, and uses the electric telescopic rod 18 to move the upper moving plate 16 and the lower moving plate 17 relatively, push out the horizontal sampling cylinder 9, and make the horizontal sampling cylinder 9 pass through the horizontal sampling seat 7 and the mobile outer cylinder 3 and extend into the core, intercept a small part of the core sample, and complete the horizontal sampling.

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

[0035] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather 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 comprises a machine base (1), a frame (2), a longitudinal sampling mechanism, a transverse sampling mechanism and a movable outer cylinder mechanism; the machine base (1) is erected on the ground and is used to support the entire device; the frame (2) is erected above the machine base (1) and is used 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 comprises a longitudinal sampling cylinder (4), a rotation drive unit, a movable sampling platform (6) and a longitudinal drive unit; the output end of the rotation drive unit is fixedly connected to the longitudinal sampling cylinder (4) and is used to drive the longitudinal sampling cylinder (4) to rotate; the rotation drive unit is arranged inside the movable sampling platform (6); the longitudinal drive unit is arranged 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 comprises a movable outer cylinder (3) and an outer cylinder drive unit; the movable outer cylinder (3) is sleeved on the longitudinal sampling cylinder (4); The outer cylinder (4) is arranged outside the sample cylinder (4); the outer cylinder driving unit is arranged inside the machine base (1); the upper end of the movable outer cylinder mechanism passes through the machine base (1) and is connected to the outer cylinder driving unit, and is used to drive the movable outer cylinder (3) to move up and down; the transverse sampling mechanism is used for transverse sampling, and comprises a transverse sampling seat (7), a fixed sampling platform (8), a transverse sampling cylinder (9), a transverse sampling driving unit and a longitudinal moving unit; the transverse sampling seat (7) is arranged between the movable outer cylinder (3) and the longitudinal sampling cylinder (4); the fixed sampling platform (8) is fixed above the machine base (1); the longitudinal moving unit is arranged on the fixed sampling platform (8), and the lower end 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 driving unit are arranged inside the transverse sampling seat (7); the transverse sampling driving unit is used to drive the transverse sampling cylinder (9) to move transversely.

2. A geological core sampling device according to claim 1, characterized in that: The frame (2) comprises two symmetrically arranged columns (5) which are respectively slidably connected to two sides of the mobile sampling platform (6); the longitudinal drive unit is arranged in one of the columns (5), and comprises a third motor (10), a driving sprocket (11) and a driven sprocket (12); a transmission block (13) is fixedly arranged on the outer side of the mobile sampling platform (6); the output end of the third motor (10) is fixedly connected to the rotating shaft of the driving sprocket (11); the driving sprocket (11) and the driven sprocket (12) are connected through a chain transmission; the chain between the driving 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 1, characterized in that: The rotary drive unit comprises a first driving gear, a first driven gear and a first motor; the first driven gear is sleeved on the outside of the longitudinal sampling barrel (4) and is fixedly connected to the longitudinal sampling barrel (4); the first driven gear is meshed with the first driving gear for transmission; and the output end of the first motor is fixedly connected to the rotating shaft of the first driving gear.

4. A geological core sampling device according to claim 1, characterized in that: The longitudinal sampling tube (4) is hollow, and its upper part passes through the mobile sampling platform (6); a spiral cutting blade is arranged on the lower side of the longitudinal sampling tube (4) for digging downward, and a sharp tooth portion is arranged at the lower end for breaking the rock surface; an inclined cleaning sheet is arranged on the lower inner side of the movable outer tube (3) for cleaning the cutting blade.

5. A geological core sampling device according to claim 1, characterized in that: The outer side surface of the upper part of the movable outer cylinder (3) 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 to the rotating shaft of the second driving gear; the second driven gear is meshed 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 1, characterized in that: The longitudinal moving unit comprises two groups of longitudinal moving components, which are respectively connected to the two side parts of the transverse sampling seat (7); the longitudinal moving components comprise a supporting roller (14) and a winch (15); the supporting roller (14) is arranged inside the fixed sampling platform (8) through a supporting seat, and the winch (15) is connected to the transverse sampling seat (7) through a cable, and the middle part of the cable is supported by the supporting roller (14) to keep the cable arranged vertically.

7. A geological core sampling device according to claim 1, characterized in that: The side wall of the movable outer cylinder (3) is provided with a plurality of through holes which are compatible with the transverse sampling cylinder (9) and are used for the transverse sampling cylinder (9) to perform transverse sampling; the side of the transverse sampling seat (7) is provided with a through hole which is compatible with the transverse sampling cylinder (9) and is opposite to the through hole on the movable outer cylinder (3).

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

9. The sampling method of the geological core sampling device according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: setting up a sampling device at a position where sampling is required, first starting a second motor to lower a movable outer cylinder (3) to align it with the sampling position, and then starting a third motor to move a longitudinal sampling cylinder (4) downward along the movable outer cylinder (3) to accurately align it with the sampling position; simultaneously operating a first motor and a second motor to rotate the longitudinal sampling cylinder (4) to advance downward, and longitudinal sampling is performed, and a core sample inside the longitudinal sampling cylinder (4) is taken out above a movable sampling platform (6); when transverse sampling is required, When the horizontal sampling seat (7) is lowered at the fixed sampling platform (8) by means of a winch (15), the horizontal sampling seat (7) is moved downward along the longitudinal sampling tube (4) to the position where horizontal sampling is required, and the upper movable plate (16) and the lower movable plate (17) are relatively moved by means of an electric telescopic rod (18), and the horizontal sampling tube (9) is pushed outward, so that the horizontal sampling tube (9) passes through the horizontal sampling seat (7) and the movable outer tube (3) and extends into the rock core, thereby cutting off a small portion of the rock core sample and completing the horizontal sampling.

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