A drilling rig device for geotechnical exploration in a complex geological area

Abstract

The application discloses a drilling machine device for geotechnical exploration in a complex geological area and belongs to the technical field of drilling machine devices.The device comprises a vehicle body, a ground penetrating radar is arranged at the top end of the vehicle body, a drill rod mounting seat is arranged above the vehicle body, guide blocks are fixedly connected to the two ends of the drill rod mounting seat, a guide rod is fixedly connected to the top end of the vehicle body and is in sliding connection with the guide blocks, and a transverse lifting and carrying mechanism is arranged at the top end of the vehicle body and is connected with the drill rod mounting seat.The ground penetrating radar, an outer drill rod, an inner drill rod, a coring clamping cylinder and a traction mechanism are arranged, the ground penetrating radar is used to detect the thickness of each layer of underground rock and soil, the function of independent coring of each layer of underground rock and soil is realized, the whole rock core does not need to be cut for subsequent processing, the subsequent workload of the staff is reduced, the friction between the rock core and the inner drill rod is small because only a small section of rock core is arranged in the inner drill rod, the rock core and the inner drill rod are easily separated, and the extraction difficulty of the rock core is obviously reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling rigs, and in particular to a drilling rig for rock and soil exploration in geologically complex areas. Background Art

[0002] When it is necessary to investigate geological conditions, explore hydrogeology, etc., it is necessary to use a drilling rig to sample and test underground rock and soil layers;

[0003] The existing drilling rig mainly uses a drill rod and a drill bit to drill the drill rod into the ground, then pulls out the drill rod, and then extracts the drilled core from the ground, and then uses a special tool to remove the core from the inside of the drill rod. However, due to the long length of the drill rod and the fact that the core to be removed is in the shape of a long cylinder inside the drill rod, the friction between the entire core and the inner wall of the drill rod is relatively large, which makes it more troublesome to remove the entire core. The removed core also needs to be cut according to the position of the different layers below to facilitate subsequent detection and analysis of the cores of different layers. In the existing removal method, there is also a method of cutting the core from the drill rod by pressing the core tube or using a cutting tool (such as a saw blade or a cutter) to cut the core from the drill rod and then remove it. This not only damages the core tube, but also makes the operation more troublesome. Therefore, a drilling rig device for geotechnical exploration in geologically complex areas is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the cores drilled by the drilling rig are difficult to extract and the subsequent cores need to be cut and classified according to different rock layers, which increases the difficulty of core processing. A drilling rig device for geotechnical exploration in geologically complex areas is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A drilling rig device for geotechnical exploration in geologically complex areas comprises a vehicle body, a ground-penetrating radar is provided at the top of the vehicle body, a drill rod mounting seat is provided above the vehicle body, both ends of the drill rod mounting seat are fixedly connected to guide blocks, the top of the vehicle body is fixedly connected to a guide rod slidably connected to the guide block, a transverse lifting and transporting mechanism connected to the drill rod mounting seat is installed at the top of the vehicle body, a drive cavity is provided inside the drill rod mounting seat, the top and bottom ends of the drill rod mounting seat are provided with aligned rotating holes, an external drill rod is rotatably connected in the rotating hole, and a gear driving mechanism connected to the external drill rod is provided inside the drive cavity;

[0007] The top of the said drilling rod mounting seat is fixedly connected to the mounting top plate by a column, and the said mounting top plate is provided with a rotating mouth, and the inner side of the said rotating mouth is rotatably connected to the synchronous rotating drum, and the top of the said synchronous rotating drum is fixedly connected to the synchronous gear by a rotating shaft, and the top of the said synchronous rotating drum is fixedly connected to the synchronous gear by a rotating shaft.

[0008] The inner wall of the core clamping cylinder is provided with circumferentially distributed translational sliding grooves, and a clamping assembly for clamping the core is provided inside the translational sliding grooves.

[0009] Preferably, a drill bit is fixedly connected to the bottom end of the outer drill rod, and the side wall thickness of the outer drill rod is smaller than the side wall thickness of the drill bit.

[0010] Preferably, a vertical limiting groove is provided on the inner wall of the outer drill rod, the top of the vertical limiting groove is in an open state, and the surfaces of the inner drill rod and the core clamping tube are fixedly connected with a vertical strip block slidably arranged with the vertical limiting groove.

[0011] Preferably, the gear drive mechanism includes a driven gear fixedly connected to the surface of the outer drill rod and a drilling motor installed on the top of the drill rod mounting seat, and the output end of the drilling motor extends into the driving cavity and is fixedly connected to a driving gear meshing with the driven gear.

[0012] Preferably, the bottom end of the synchronous rotating cylinder is provided with holes distributed in a circumference, and a U-shaped block is fixedly connected to the bottom end of the synchronous rotating cylinder at the holes.

[0013] Preferably, the traction mechanism includes a traction motor installed at the top inner side of the synchronous rotating cylinder, a worm fixedly connected to the output end of the traction motor, and a worm wheel rotatably arranged on the inner side of the U-shaped block.

[0014] Preferably, the worm wheel is engaged with the worm, and an annular groove for winding the traction cable is provided on the surface of the worm wheel.

[0015] Preferably, the clamping assembly includes a core clamping plate that is slidably arranged inside the translation slot and can only move horizontally. The surface of the core clamping plate is provided with a clamping protrusion for increasing friction, and a pressure block that moves vertically is slidably arranged inside the translation slot.

[0016] Preferably, a wire groove for passing the traction cable is provided at the top end of the core clamping plate, and the top end of the core clamping plate is arranged obliquely.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This solution is equipped with a ground-penetrating radar, an outer drill rod, an inner drill rod, a core sampling clamping tube and a traction mechanism. The ground-penetrating radar is used to detect the thickness of each layer of underground rock and soil. The controller is used to control the operation of the horizontal lifting and transporting mechanism according to the detected thickness value, so that the horizontal lifting and transporting mechanism drives the outer drill rod to drill into the corresponding thickness value. Then, the core sampling clamping tube is used to clamp the drilled core. At the same time, the rotation force of the outer drill rod is used to twist the drilled core off, thereby realizing the function of independent coring of each layer of underground rock and soil. There is no need to subsequently cut off the entire section of core, reducing the subsequent workload of the staff.

[0019] 2. This solution is provided with an outer drill rod, an inner drill rod, a core sampling clamping tube, a clamping assembly and a traction mechanism. After the drilled core is clamped by the clamping assembly inside the core sampling clamping tube, the core sampling clamping tube and the inner drill rod are pulled out of the outer drill rod under the action of the traction mechanism. Then, the outer drill rod is lifted up to separate it from the core, and the core sampling clamping tube is raised so that the clamping assembly no longer clamps the core, and the core can be extracted. Since there is only a small section of core inside the inner drill rod, the friction between the core and the inner drill rod is small, so they are easy to separate, which significantly reduces the difficulty of extracting the core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a drilling rig for geotechnical exploration in geologically complex areas proposed by the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of a drilling rig for geotechnical exploration in geologically complex areas proposed by the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the assembly structure of a traction mechanism, a gear drive mechanism, an outer drill rod, and an inner drill rod in a drilling rig for geotechnical exploration in geologically complex areas proposed by the present invention;

[0023] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0024] Figure 5 This is a schematic cross-sectional view of a core clamping tube in a drilling rig for geotechnical exploration in geologically complex areas proposed by the present invention;

[0025] Figure 6This is a schematic diagram of the cross-sectional structure of the outer drill rod and drill bit in a drilling rig device for geotechnical exploration in geologically complex areas proposed by the present invention.

[0026] In the figure: 1. Vehicle body; 2. Ground penetrating radar; 3. Mounting top plate; 4. Drilling motor; 5. Guide rod; 6. Drill rod mounting seat; 7. Outer drill rod; 8. Motor mounting plate; 9. Worm gear; 10. Transverse lifting and transporting mechanism; 11. Inner drill rod; 12. Driven gear; 13. Driving gear; 14. Traction cable; 15. Coring clamping cylinder; 1501. Translation slide; 16. Drill bit; 17. Worm; 18. Clamping protrusion; 19. Pressure block; 20. Core clamping plate; 2001. Wire groove; 21. Blocking piece; 22. Synchronous rotating cylinder; 23. Synchronous gear; 24. Transmission gear; 25. Traction motor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0030] Example, see Figures 1 to 6 A drilling rig for geotechnical exploration in geologically complex areas includes a vehicle body 1, a ground-penetrating radar 2 is provided on the top of the vehicle body 1, and the ground-penetrating radar 2 can detect the thickness of each underground rock layer. This is a prior art, and its working principle will not be described in detail here.

[0031] A drill rod mounting seat 6 is provided above the vehicle body 1. Guide blocks are fixedly connected to both ends of the drill rod mounting seat 6. A guide rod 5 slidably connected to the guide block is fixedly connected to the top of the vehicle body 1. The guide rod 5 cooperates with the guide block to ensure the stability of the lifting of the drill rod mounting seat 6.

[0032] A transverse lifting and transporting mechanism 10 connected to the drill rod mounting seat 6 is installed at the top of the vehicle body 1. The transverse lifting and transporting mechanism 10 is a prior art. The transverse lifting and transporting mechanism 10 in the prior art is horizontally arranged. Here, it is arranged in a vertical state, and its free end is connected to the drill rod mounting seat 6 to ensure that the transverse lifting and transporting mechanism 10 can drive the drill rod mounting seat 6 to move up and down. Its specific structure and working principle are not repeated here.

[0033] A drive chamber is provided inside the drill rod mounting seat 6, and aligned rotating holes are provided at the top and bottom ends of the drill rod mounting seat 6. The outer drill rod 7 is rotatably connected in the rotating hole, and a gear drive mechanism connected to the outer drill rod 7 is provided inside the drive chamber; further, the gear drive mechanism includes a driven gear 12 fixedly connected to the surface of the outer drill rod 7 and a drilling motor 4 installed at the top of the drill rod mounting seat 6, and the output end of the drilling motor 4 extends to the inside of the drive chamber and is fixedly connected to a driving gear 13 that meshes with the driven gear 12.

[0034] It should be noted that the drilling motor 4 drives the driving gear 13 to rotate, the driving gear 13 drives the driven gear 12 engaged therewith to rotate, and the driven gear 12 drives the outer drill rod 7 to rotate. The outer drill rod 7 cooperates with the drill bit 16 to drill into the ground for core drilling operations.

[0035] The top of the drill rod mounting seat 6 is fixedly connected to the mounting top plate 3 through a column. A rotating port is opened inside the mounting top plate 3. A synchronous rotating cylinder 22 is rotatably connected to the inside of the rotating port. The top of the synchronous rotating cylinder 22 is fixedly connected to a synchronous gear 23 through a rotating shaft. A synchronous motor is installed on the inner top of the motor mounting plate 8. The output end of the synchronous motor is fixedly connected to a transmission gear 24 that meshes with the synchronous gear 23.

[0036] It should be noted that: the synchronous motor drives the transmission gear 24 to rotate, the transmission gear 24 drives the synchronous gear 23 meshing with it to rotate, the synchronous gear 23 drives the synchronous rotating cylinder 22 to rotate, the synchronous rotating cylinder 22 drives the traction mechanism to rotate, and the traction mechanism drives the traction cable 14 to rotate synchronously with the outer drill rod 7 to avoid entanglement of the traction cable 14.

[0037] A traction mechanism is provided inside the synchronous rotating cylinder 22, and the traction mechanism is connected to the core clamping cylinder 15 through the traction steel cable 14. Furthermore, the bottom end of the synchronous rotating cylinder 22 is provided with holes distributed in a circumference (the traction steel cable 14 is provided through the holes), and the bottom end of the synchronous rotating cylinder 22 is fixedly connected to a U-shaped block at the hole. Furthermore, the traction mechanism includes a traction motor 25 installed at the top inner side of the synchronous rotating cylinder 22, a worm 17 fixedly connected to the output end of the traction motor 25, and a worm wheel 9 rotatably arranged on the inner side of the U-shaped block. Furthermore, the worm wheel 9 is engaged with the worm 17, and the surface of the worm wheel 9 is provided with an annular groove for winding the traction steel cable 14.

[0038] It should be noted that the traction motor 25 drives the worm 17 at its output end to rotate, and the worm 17 drives the worm wheel 9 engaged with it to rotate. The rotation of the worm wheel 9 will reel in the traction cable 14, and the traction cable 14 drives the pressure block 19 to move upward, thereby providing driving force for the clamping assembly to clamp the core.

[0039] The core clamping tube 15 is slidably connected to the inner wall of the outer drill rod 7. The inner drill rod 11 is slidably provided inside the outer drill rod 7. A stopper 21 is rotatably provided near the top of the side wall of the outer drill rod 7 to limit the inner drill rod 11. A through groove is provided inside the side wall of the inner drill rod 11 for the traction cable 14 to pass through.

[0040] It should be noted that the setting of the inner drill rod 11 can ensure that the drilled core is of consistent thickness from top to bottom. At the same time, when the core clamping tube 15 is moved upward by the traction steel cable 14, the inner drill rod 11 uses its own gravity to apply downward pressure to the core clamping tube 15, so that the traction steel cable 14 passing through the core clamping tube 15 is always in a taut state, thereby ensuring that the core clamping plate 20 always squeezes the core, making it easier for the core clamping tube 15 to take the core out from the inside of the outer drill rod 7.

[0041] The inner wall of the core sampling clamping cylinder 15 is provided with a circumferentially distributed translation groove 1501, and a clamping assembly for clamping the core is arranged inside the translation groove 1501. Furthermore, the clamping assembly includes a core clamping plate 20 that is slidably arranged on the inside of the translation groove 1501 and can only move horizontally. The surface of the core clamping plate 20 is provided with a clamping protrusion 18 for increasing friction, and a vertically moving pressure block 19 is slidably arranged on the inside of the translation groove 1501. Furthermore, a wire groove 2001 for the traction steel cable 14 to pass through is provided at the top of the core clamping plate 20, and the top of the core clamping plate 20 is arranged obliquely.

[0042] It should be noted that when the traction cable 14 drives the pressure block 19 to move upward, the pressure block 19 can squeeze the inclined surface of the top of the core clamping plate 20, so that the core clamping plate 20 moves toward the core, thereby realizing the clamping and fixing function of the core, which is convenient for the subsequent twisting and extraction of the core.

[0043] Furthermore, a drill bit 16 is fixedly connected to the bottom end of the outer drill rod 7 , and the side wall thickness of the outer drill rod 7 is smaller than the side wall thickness of the drill bit 16 .

[0044] Furthermore, a vertical limit slot is provided on the inner wall of the outer drill rod 7, the top of which is in an open state, and the surfaces of the inner drill rod 11 and the core clamping tube 15 are fixedly connected with vertical strip blocks that are slidably arranged with the vertical limit slot, ensuring that when the outer drill rod 7 rotates, the inner drill rod 11 and the core clamping tube 15 can be driven to rotate synchronously.

[0045] When the present invention is used, the ground penetrating radar 2 is first used to detect the thickness of each underground rock layer, and the thickness value of each detected rock layer is uploaded to the controller. The controller controls the horizontal movement, lifting and transporting mechanism 10 to work according to the thickness value (starting from the thickness value of the topmost rock layer). The horizontal movement, lifting and transporting mechanism 10 drives the drill rod mounting seat 6 to move downward, and then drives the outer drill rod 7 to move downward. At the same time, the controller is used to turn on the drilling motor 4 and the synchronous motor. The drilling motor 4 drives the driving gear 13 to rotate, and the driving gear 13 drives the driven gear 12 engaged therewith to rotate. The driven gear 12 drives the outer drill rod 7 to rotate, and the outer drill rod 7 drives the drill bit 16 to rotate, thereby realizing the drilling function of the underground rock layer. The synchronous motor drives the transmission gear 24 to rotate, and the transmission gear 24 drives the synchronous gear 23 engaged therewith to rotate. The synchronous gear 23 drives the synchronous rotating drum 22 to rotate, and the synchronous rotating drum 22 drives the traction mechanism to rotate. The traction mechanism drives the traction cable 14 to rotate synchronously with the outer drill rod 7 to avoid entanglement of the traction cable 14.

[0046] When the outer drill rod 7 moves down to the measured thickness, the controller controls the transverse lifting and transporting mechanism 10 to stop working. At this time, the outer drill rod 7 stops moving down. Then the controller controls the traction motor 25 to work. The traction motor 25 drives the worm 17 at its output end to rotate. The worm 17 drives the worm gear 9 engaged therewith to rotate. The worm gear 9 rotates and reels the traction cable 14. The traction cable 14 drives the pressure block 19 to move upward. The upward movement of the pressure block 19 can squeeze the inclined surface of the top of the core clamping plate 20, so that the core clamping plate 20 moves toward the direction of the core, thereby realizing the clamping and fixing function of the core. At the same time, under the action of the rotational force of the outer drill rod 7, the coring clamping tube 15 can rotate the core, thereby realizing the twisting function of the core.

[0047] After the core is twisted off, the synchronous motor and the drilling motor 4 are turned off, and the blocking member 21 is manually rotated to contact the limit of the inner drill rod 11. At this time, the traction cable 14 drives the core clamping tube 15 to move upward through the pressure block 19, and the core clamping tube 15 drives the inner drill rod 11 to move upward, thereby taking out the core clamped inside the core clamping tube 15. When the core clamping tube 15 and the inner drill rod 11 are pulled out from the outer drill rod 7, the inner drill rod 11 is manually moved upward to separate it from the core (because there is only a small section of core inside the inner drill rod 11, the friction between the core and the inner drill rod 11 is small, which makes it easy to separate). Then, the core clamping tube 15 is held by hand and moved upward to separate the pressure block 19 from the core clamping plate 20, so that the core clamping plate 20 no longer clamps the core, thereby taking the drilled core out of the core clamping tube 15.

[0048] After the core is taken out, the core clamping tube 15 and the inner drill rod 11 are reset to the inside of the outer drill rod 7, and then the controller controls the drilling motor 4 and the synchronous motor to work again, and at the same time controls the horizontal lifting and transporting mechanism 10 to continue to move down a certain distance (the thickness value of the next rock layer). The above operations are repeated in this way, and the cores of different rock layers can be drilled independently. Since the length of each layer of core is short, the friction between the core and the inner wall of the inner drill rod 11 is small, which significantly facilitates the extraction of the core. Since the cores of the same rock layer are drilled independently, there is no need to subsequently cut off the entire section of core, reducing the subsequent workload of the staff.

[0049] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A drilling rig for geotechnical exploration in geologically complex areas, comprising a vehicle body (1), characterized in that: The top of the vehicle body (1) is provided with a ground penetrating radar (2), the top of the vehicle body (1) is provided with a drill rod mounting seat (6), both ends of the drill rod mounting seat (6) are fixedly connected with guide blocks, the top of the vehicle body (1) is fixedly connected with a guide rod (5) slidably connected with the guide block, the top of the vehicle body (1) is provided with a transverse lifting and transporting mechanism (10) connected with the drill rod mounting seat (6), a driving cavity is provided inside the drill rod mounting seat (6), the top and bottom ends of the drill rod mounting seat (6) are provided with aligned rotating holes, an outer drill rod (7) is rotatably connected in the rotating hole, and a gear driving mechanism connected with the outer drill rod (7) is provided inside the driving cavity; The top end of the drill rod mounting seat (6) is fixedly connected to the mounting top plate (3) via a column, a rotating port is provided inside the mounting top plate (3), a synchronous rotating cylinder (22) is rotatably connected to the inner side of the rotating port, the top end of the synchronous rotating cylinder (22) is fixedly connected to the synchronous gear (23) via a rotating shaft, a motor mounting plate (8) is installed on the top end of the mounting top plate (3), a synchronous motor is installed on the inner top end of the motor mounting plate (8), and a transmission gear (23) meshing with the synchronous gear (23) is fixedly connected to the output end of the synchronous motor. 24), a traction mechanism is provided inside the synchronous rotating cylinder (22), the traction mechanism is connected to a core clamping cylinder (15) through a traction steel cable (14), the core clamping cylinder (15) is slidably connected to the inner wall of the outer drill rod (7), an inner drill rod (11) is slidably provided inside the outer drill rod (7), a blocking member (21) is rotatably provided on the side wall of the outer drill rod (7) near the top end for limiting the inner drill rod (11), and a through groove for the traction steel cable (14) to pass through is provided inside the side wall of the inner drill rod (11); The inner wall of the core clamping cylinder (15) is provided with circumferentially distributed translational sliding grooves (1501), and a clamping assembly for clamping the core is provided inside the translational sliding grooves (1501).

2. A drilling rig for geotechnical exploration in geologically complex areas according to claim 1, characterized in that: The bottom end of the outer drill rod (7) is fixedly connected to a drill bit (16), and the side wall thickness of the outer drill rod (7) is smaller than the side wall thickness of the drill bit (16).

3. The drilling rig for geotechnical exploration in geologically complex areas according to claim 1, characterized in that: The inner wall of the outer drill rod (7) is provided with a vertical limiting slot, the top of which is open, and the surfaces of the inner drill rod (11) and the core clamping cylinder (15) are fixedly connected with vertical strip blocks that are slidably arranged with the vertical limiting slot.

4. The drilling rig for geotechnical exploration in geologically complex areas according to claim 1, characterized in that: The gear drive mechanism comprises a driven gear (12) fixedly connected to the surface of an outer drill rod (7) and a drilling motor (4) mounted on the top of a drill rod mounting seat (6); an output end of the drilling motor (4) extends into the interior of a drive cavity and is fixedly connected to a driving gear (13) meshing with the driven gear (12).

5. The drilling rig for geotechnical exploration in geologically complex areas according to claim 1, characterized in that: The bottom end of the synchronous rotating cylinder (22) is provided with holes distributed in a circumferential manner, and the bottom end of the synchronous rotating cylinder (22) is fixedly connected to a U-shaped block at the holes.

6. The drilling rig for geotechnical exploration in geologically complex areas according to claim 5, characterized in that: The traction mechanism comprises a traction motor (25) mounted on the inner top end of a synchronous rotating cylinder (22), a worm (17) fixedly connected to the output end of the traction motor (25), and a worm wheel (9) rotatably arranged on the inner side of a U-shaped block.

7. The drilling rig for geotechnical exploration in geologically complex areas according to claim 6, characterized in that: The worm wheel (9) is meshed with the worm (17), and an annular groove for winding the traction cable (14) is provided on the surface of the worm wheel (9).

8. The drilling rig for geotechnical exploration in geologically complex areas according to claim 1, characterized in that: The clamping assembly includes a core clamping plate (20) that is slidably arranged on the inner side of a translational slide groove (1501) and can only move horizontally. The surface of the core clamping plate (20) is provided with a clamping protrusion (18) for increasing friction. A pressure block (19) that moves vertically is slidably arranged on the inner side of the translational slide groove (1501).

9. The drilling rig for geotechnical exploration in geologically complex areas according to claim 8, characterized in that: The top end of the core clamping plate (20) is provided with a wire groove (2001) for the traction steel cable (14) to pass through, and the top end of the core clamping plate (20) is arranged obliquely.

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