Long drill hole high-pressure hydraulic slotting anti-reflection device

Abstract

The invention relates to the technical field of rock stratum hydraulic slotting permeability increasing, in particular to a long drill hole high-pressure hydraulic slotting permeability increasing device. The invention provides a long drill hole high-pressure hydraulic slotting anti-reflection device capable of cutting and expanding a slotting position in advance and improving the slotting effect and efficiency of a rock stratum. A long drill hole high-pressure hydraulic slotting anti-reflection device comprises a connecting pipe, a slotting device, a rotating piece and the like, the upper side of the connecting pipe is connected with the slotting device, and the middle of the slotting device is rotationally connected with the rotating piece. A motor is started, a rotating ring is made to rotate through a transmission assembly, a first telescopic rod is driven to rotate, a top plate pushes an expansion plate to move on a guide frame through the acting force of a first spring, the expansion plate extends to make contact with a drill hole, and along with rotation of a drill bit, the expansion plate rotates to expand the hydraulic cutting seam of a rock stratum; and the effects that the slit can be cut and expanded in advance, and the rock stratum slotting effect and efficiency are improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic slotting and permeability enhancement of rock formations, in particular to a long borehole high-pressure hydraulic slotting and permeability enhancement device. Background Art

[0002] The long borehole high pressure hydraulic cutting and permeability enhancement device is a device specially used to improve the permeability of coal seams or rock formations. It forms cracks in the borehole through high pressure water jets, thereby increasing the permeability of coal seams or rock formations, improving gas extraction efficiency or improving mine ventilation conditions.

[0003] The existing long-borehole high-pressure hydraulic cutting and permeability enhancement device pre-drills a hole in the target rock formation through a drilling rig to form a channel, and then sprays a high-pressure jet through the nozzle on the drill bit to cut the rock formation. However, since the existing long-borehole high-pressure hydraulic cutting and permeability enhancement device cannot pre-cut the cutting joint, when the mixed jet is sprayed to the rock formation cutting joint, the initial resistance is large, and the high-pressure water jet lacks a clear path, which may cause the cracks to develop in an undesirable direction, thereby resulting in poor rock formation cutting effect and efficiency.

[0004] Therefore, a long-borehole high-pressure hydraulic cutting and permeability-enhancing device has been developed that can pre-cut and expand the cutting joints to improve the rock cutting effect and efficiency. Summary of the invention

[0005] In order to overcome the shortcomings of the existing long-borehole high-pressure hydraulic cutting and permeability enhancement device that is unable to pre-cut the cutting joint, the initial resistance is large when the mixed jet is sprayed to the rock formation cutting joint, and the high-pressure water jet lacks a clear path, which may cause the cracks to develop in an undesirable direction, thereby resulting in poor rock formation cutting effect and efficiency, the present invention provides a long-borehole high-pressure hydraulic cutting and permeability enhancement device that can pre-cut and expand the cutting joint to improve the rock formation cutting effect and efficiency.

[0006] The technical solution is: a long-borehole high-pressure hydraulic slotting and permeability-enhancing device, including a connecting pipe, a slotting device, a rotating part, a high-pressure nozzle, a drill bit and an expansion mechanism, the upper side of the connecting pipe is connected to the slotting device, the middle part of the slotting device is rotatably connected to the rotating part, the left and right sides of the rotating part are connected to the high-pressure nozzle, the upper side of the slotting device is connected to the drill bit, and the slotting device is provided with an expansion mechanism that can pre-cut and expand the slotting of the rock formation.

[0007] Furthermore, the connecting pipe is provided with threads.

[0008] Further, the expansion mechanism includes a rotating ring, a motor, a transmission assembly, a first telescopic rod, a first spring, a top plate, a guide frame, a second spring and an expansion plate. The upper part of the slotter is rotatably connected to the rotating ring, the upper part of the slotter is connected to the motor, the motor is located above the rotating ring, a transmission assembly is provided between the motor output shaft and the rotating ring, a plurality of first telescopic rods are connected to the outer side of the rotating ring, the telescopic ends of the first telescopic rods are connected to the top plates, the top plates are connected to the first telescopic rods connected thereto with the first springs, the upper part of the slotter is connected to the outer side of the plurality of guide frames, and the space between two adjacent guide frames The expansion plates are all slidably connected, and a second spring is connected between the expansion plates and the connected guide frames. When the expansion plates move to the hydraulic cutting seam, the drill bit stops moving, the motor is started, and the gears and gear rings in the transmission assembly are meshed to rotate the rotating ring, driving the first telescopic rod to rotate. When the top plate moves to the expansion plate, the top plate pushes the expansion plate to move on the guide frame through the force of the first spring, and the second spring is squeezed and contracted, so that the expansion plate is extended to contact the drill hole. As the drill bit rotates, the expansion plate rotates to expand the hydraulic cutting seam of the rock formation.

[0009] Furthermore, the transmission assembly includes a gear and a gear ring. The gear is connected to the lower side of the motor output shaft, and the gear ring is connected to the upper side of the rotating ring. The gear ring is meshed with the gear.

[0010] Furthermore, the rotating mechanism includes a support seat, an electric push rod, a space cam and a lifting plate. A plurality of support seats are connected to the outer side of the middle part of the slitter, and the support seats are all connected to the electric push rods. The upper side of the rotating part is connected to the space cam, and a lifting plate is connected between the telescopic ends of the electric push rod. The lifting plate contacts and cooperates with the space cam. The electric push rod on the support seat is started to push the lifting plate to move, so that the lifting plate triggers the space cam to rotate, driving the rotating part to rotate, and then the high-pressure nozzle rotates.

[0011] Furthermore, it also includes an isolation mechanism, which includes a second telescopic rod, a screw rod, a rotating cylinder, an isolation baffle, a third spring and a rotating wheel. The second telescopic rod is connected to the left and right sides of the upper part of the rotating member, and the telescopic end of the second telescopic rod is connected to the screw rod. The screw rod is threadedly connected to the rotating cylinder, and the rotating cylinder is rotatably connected to the rotating member. The rotating cylinder is connected to the isolation baffle, and the isolation baffle is in contact with adjacent high-pressure nozzles. The screw rod is connected to the connected second telescopic rod with a third spring, and the outer side of the screw rod is rotatably connected to the rotating wheel. After the slitter enters the borehole, the rotating wheel on the screw rod is always kept in contact with the inner wall of the borehole by the force of the third spring. When the rotating wheel moves to the pre-expanded slit, the rotating wheel moves outward under the action of the third spring, driving the screw rod to move outward, causing the rotating cylinder to rotate, and driving the isolation baffle to rotate and disengage from the high-pressure nozzle.

[0012] Furthermore, a heating mechanism is included, which includes a support block, a third telescopic rod, a heating cover, a heating tube and a fourth spring. A plurality of support blocks are connected to the drill bit, each of which is connected to the third telescopic rod. A heating cover is connected between the telescopic ends of the four third telescopic rods on the left side, and a heating cover is also connected between the telescopic ends of the four third telescopic rods on the right side. A heating tube is connected to the inner side of the heating cover, and a fourth spring is connected between the third telescopic rod and the connected heating cover. The heating cover on the third telescopic rod is always kept in contact with the inner wall of the borehole through the action of the fourth spring, and the heating tube is heated at the same time.

[0013] Furthermore, it also includes a stabilizing mechanism, which includes a fourth telescopic rod, a stabilizing plate and a fifth spring. The upper and lower parts of the connecting tube are connected to multiple fourth telescopic rods, and the telescopic ends of the fourth telescopic rods are connected to stabilizing plates. The stabilizing plates are connected to the connected fourth telescopic rods with fifth springs. Through the action of the fifth spring, the stabilizing plates on the fourth telescopic rods always keep in contact with the inner wall of the drill hole.

[0014] Furthermore, the stabilizing plates are all arc-shaped.

[0015] Furthermore, it also includes a reinforcement mechanism, which includes a liquid guide tube, a fixed block and a liquid adding tube. The lower side of the high-pressure nozzle is connected to the liquid guide tube, the outer side of the lower part of the connecting tube is connected to multiple fixed blocks, the outer side of the upper part of the connecting tube is connected to multiple fixed blocks, the lower side of the liquid guide tube is connected to the liquid adding tube, and the liquid adding tube is connected to the adjacent fixed blocks. High-pressure water flow is introduced into the liquid guide tube through the liquid adding tube, so that the high-pressure water flow enters the high-pressure nozzle.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention starts the motor, rotates the rotating ring through the transmission assembly, drives the first telescopic rod to rotate, and uses the force of the first spring to enable the top plate to push the expansion plate to move on the guide frame, so that the expansion plate is extended to contact the drill hole, and as the drill bit rotates, the expansion plate rotates to expand the hydraulic cutting of the rock formation, thereby achieving the effect of being able to cut and expand the cutting joint in advance, thereby improving the effect and efficiency of the rock formation cutting.

[0017] 2. The present invention starts the electric push rod on the support seat to push the lifting plate to move, so that the lifting plate triggers the space cam to rotate, drives the rotating part to rotate, and then rotates the high-pressure nozzle, thereby achieving the effect of being able to adjust the direction of the high-pressure nozzle to facilitate changing the cutting direction.

[0018] 3. After the slitter enters the borehole, the force of the third spring is used to keep the rotating wheel on the screw rod in contact with the inner wall of the borehole at all times. When the rotating wheel moves to the pre-expanded slit, the rotating wheel moves outward under the force of the third spring, driving the screw rod to move outward, causing the rotating cylinder to rotate, driving the isolation baffle to rotate and disengage from the high-pressure nozzle, thereby achieving the effect of being able to open the high-pressure nozzle after the high-pressure nozzle moves to the slit to avoid clogging of the high-pressure nozzle.

[0019] 4. The present invention uses the force of the fourth spring to keep the heating cover on the third telescopic rod in contact with the inner wall of the borehole at all times, and at the same time heats the heating tube, thereby achieving the effect of heating the rock formation and accelerating the ice melting of the rock formation.

[0020] 5. The present invention uses the force of the fifth spring to ensure that the stabilizing plate on the fourth telescopic rod always keeps in contact with the inner wall of the borehole, thereby achieving the effect of limiting and stabilizing the connecting pipe and preventing the connecting pipe from deviating and shaking.

[0021] 6. The present invention introduces high-pressure water flow into the liquid guide pipe through the liquid adding pipe, so that the high-pressure water flow enters the high-pressure nozzle, thereby achieving the effect of enhancing the hydraulic power of the high-pressure nozzle and improving the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the first part of the expansion mechanism of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the second part of the expansion mechanism of the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating mechanism of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the first part of the isolation mechanism of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the second part of the isolation mechanism of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the heating mechanism of the present invention.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the stabilizing mechanism of the present invention.

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the reinforcing mechanism of the present invention.

[0032] Parts names and serial numbers in the figure: 1: connecting pipe, 2: slotting device, 21: rotating part, 22: high pressure nozzle, 3: drill bit, 4: expansion mechanism, 41: rotating ring, 42: motor, 43: transmission assembly, 44: first telescopic rod, 441: first spring, 45: top plate, 46: guide frame, 461: second spring, 47: expansion plate, 5: rotating mechanism, 51: support seat, 52: electric push rod, 53: space cam, 54: lifting plate, 6: Isolation mechanism, 61: Second telescopic rod, 62: Screw rod, 63: Rotating cylinder, 64: Isolation baffle, 65: Third spring, 66: Rotating wheel, 7: Heating mechanism, 71: Support block, 72: Third telescopic rod, 73: Heating cover, 74: Heating tube, 75: Fourth spring, 8: Stabilizing mechanism, 81: Fourth telescopic rod, 82: Stabilizing plate, 83: Fifth spring, 9: Reinforcement mechanism, 91: Liquid guide tube, 92: Fixed block, 93: Liquid adding tube. DETAILED DESCRIPTION

[0033] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0034] A long borehole high pressure hydraulic cutting and permeability enhancement device, such as Figure 1 and Figure 2 As shown, it includes a connecting pipe 1, a slotter 2, a rotating part 21, a high-pressure nozzle 22, a drill bit 3 and an expansion mechanism 4. The slotter 2 is connected to the upper side of the connecting pipe 1, and a thread is provided on the connecting pipe 1 for easy connection with a drill rod. The middle part of the slotter 2 is rotatably connected to the rotating part 21, and the left and right sides of the rotating part 21 are connected to the high-pressure nozzle 22. The drill bit 3 is connected to the upper side of the slotter 2, and the slotter 2 is provided with an expansion mechanism 4.

[0035] like Figure 1 , Figure 3 and Figure 4As shown, the expansion mechanism 4 includes a rotating ring 41, a motor 42, a transmission assembly 43, a first telescopic rod 44, a first spring 441, a top plate 45, a guide frame 46, a second spring 461 and an expansion plate 47. The upper part of the slotter 2 is rotatably connected to the rotating ring 41, and the upper part of the slotter 2 is connected to the motor 42. The motor 42 is located above the rotating ring 41. A transmission assembly 43 is provided between the output shaft of the motor 42 and the rotating ring 41. The transmission assembly 43 includes a gear and a gear ring. The lower side of the output shaft of the motor 42 is connected to Gear, a gear ring is connected to the upper side of the rotating ring 41, the gear ring is meshed with the gear, four first telescopic rods 44 are connected to the outer side of the rotating ring 41, the telescopic ends of the first telescopic rods 44 are connected to top plates 45, and first springs 441 are connected between the top plates 45 and the connected first telescopic rods 44, eight guide frames 46 are connected to the outer side of the upper part of the slitter 2, expansion plates 47 are slidably connected between two adjacent guide frames 46, and second springs 461 are connected between the expansion plates 47 and the connected guide frames 46.

[0036] When using the present invention, firstly, the connecting pipe 1 is connected to the drill rod of the drilling rig, and then the drilling rig is started to rotate and move the drill rod, thereby driving the connecting pipe 1 and the slotting device 2 to rotate and move, so that the drill bit 3 rotates and drills in the rock formation to drill holes in the rock formation. When the expansion plate 47 moves to the hydraulic slotting position, the drill bit 3 stops moving, and the motor 42 is started. The gear and the gear ring in the transmission assembly 43 are meshed to rotate the rotating ring 41, thereby driving the first telescopic rod 44 to rotate. When the top plate 45 moves to the expansion plate 47, the top plate 45 pushes the expansion plate 47 to move on the guide frame 46 through the action force of the first spring 441, and the second spring 461 is squeezed. The expansion plate 47 is compressed and contracts, so that the expansion plate 47 is extended to contact the borehole. As the drill bit 3 rotates, the expansion plate 47 rotates to expand the hydraulic cutting joint of the rock formation, thereby being able to cut and expand the cutting joint in advance, thereby improving the effect and efficiency of the rock formation cutting. After cutting, the top plate 45 is separated from the expansion plate 47, and the second spring 461 rebounds, so that the expansion plate 47 is reset, and then the drill bit 3 continues to move and drill. When the high-pressure nozzle 22 moves to the hydraulic cutting joint, the drill bit 3 stops moving and rotating, and then the high-pressure nozzle 22 sprays a high-pressure jet to hydraulically cut the rock formation, thereby increasing the permeability of the rock formation, improving the gas extraction efficiency and improving the ventilation conditions of the mine.

[0037] like Figure 1 and Figure 5 As shown, the rotating mechanism 5 includes a support seat 51, an electric push rod 52, a space cam 53 and a lifting plate 54. Two support seats 51 are connected to the outer side of the middle part of the slitter 2, and the support seats 51 are connected to the electric push rods 52. The space cam 53 is connected to the upper side of the rotating member 21. The lifting plate 54 is connected between the telescopic ends of the electric push rod 52, and the lifting plate 54 is in contact with the space cam 53.

[0038] By using the rotating mechanism 5 of the device, the direction of the high-pressure nozzle 22 can be adjusted, and the electric push rod 52 on the support seat 51 is started to push the lifting plate 54 to move, so that the lifting plate 54 triggers the space cam 53 to rotate, driving the rotating part 21 to rotate, and then the high-pressure nozzle 22 rotates, thereby playing a role in adjusting the direction of the high-pressure nozzle 22 to facilitate changing the cutting direction.

[0039] like Figure 1 , Figure 6 and Figure 7 As shown, an isolation mechanism 6 is also included, and the isolation mechanism 6 includes a second telescopic rod 61, a screw rod 62, a rotating cylinder 63, an isolation baffle 64, a third spring 65 and a rotating wheel 66. The second telescopic rod 61 is connected to both sides of the upper left and right sides of the rotating member 21, and the telescopic end of the second telescopic rod 61 is connected to the screw rod 62, and the rotating cylinder 63 is threadedly connected to the screw rod 62. The rotating cylinder 63 is rotatably connected to the rotating member 21, and the rotating cylinder 63 is connected to the isolation baffle 64. The isolation baffle 64 is in contact with the adjacent high-pressure nozzle 22. The screw rod 62 is connected to the second telescopic rod 61 connected thereto with a third spring 65, and the outer side of the screw rod 62 is rotatably connected to the rotating wheel 66.

[0040] By using the isolation mechanism 6 of the device, the high-pressure nozzle 22 can be isolated. After the slitter 2 enters the borehole, the force of the third spring 65 keeps the rotating wheel 66 on the screw rod 62 in contact with the inner wall of the borehole at all times. When the rotating wheel 66 moves to the pre-expanded slit, the rotating wheel 66 moves outward under the force of the third spring 65, driving the screw rod 62 to move outward, causing the rotating cylinder 63 to rotate, driving the isolation baffle 64 to rotate and disengage from the high-pressure nozzle 22, thereby achieving the effect of being able to open the high-pressure nozzle 22 after the high-pressure nozzle 22 moves to the slit, thereby avoiding blockage of the high-pressure nozzle 22.

[0041] like Figure 1 and Figure 8 As shown, a heating mechanism 7 is also included, and the heating mechanism 7 includes a support block 71, a third telescopic rod 72, a heating cover 73, a heating tube 74 and a fourth spring 75. Eight support blocks 71 are connected to the drill bit 3, and the support blocks 71 are all connected to the third telescopic rods 72. A heating cover 73 is connected between the telescopic ends of the four third telescopic rods 72 on the left side, and a heating cover 73 is also connected between the telescopic ends of the four third telescopic rods 72 on the right side. The inner side of the heating cover 73 is connected to the heating tube 74, and the fourth spring 75 is connected between the third telescopic rods 72 and the connected heating cover 73.

[0042] The heating mechanism 7 of the device can be used to heat the rock formation. The heating cover 73 on the third telescopic rod 72 is always kept in contact with the inner wall of the borehole through the force of the fourth spring 75, and the heating tube 74 is heated at the same time, thereby heating the rock formation and accelerating the melting of ice in the rock formation.

[0043] like Figure 1 and Fig. 9 As shown, a stabilizing mechanism 8 is also included, and the stabilizing mechanism 8 includes a fourth telescopic rod 81, a stabilizing plate 82 and a fifth spring 83. The upper and lower parts of the connecting tube 1 are connected to four fourth telescopic rods 81, and the telescopic ends of the fourth telescopic rods 81 are connected to stabilizing plates 82. The stabilizing plates 82 are all arc-shaped, which is convenient for fitting drilling holes. The stabilizing plates 82 are connected to the fourth telescopic rods 81 with fifth springs 83.

[0044] By using the stabilizing mechanism 8 of the device, the connecting pipe 1 can be limited and stabilized. Through the force of the fifth spring 83, the stabilizing plate 82 on the fourth telescopic rod 81 always keeps in contact with the inner wall of the borehole, thereby limiting and stabilizing the connecting pipe 1 and preventing the connecting pipe 1 from deviating and shaking.

[0045] like Figure 1 and Fig.10 As shown, it also includes a reinforcement mechanism 9, which includes a liquid guide tube 91, a fixed block 92 and a liquid adding tube 93. The lower side of the high-pressure nozzle 22 is connected to the liquid guide tube 91, the lower outer side of the connecting tube 1 is connected to four fixed blocks 92, the upper outer side of the connecting tube 1 is connected to two fixed blocks 92, the lower side of the liquid guide tube 91 is connected to the liquid adding tube 93, and the liquid adding tube 93 is connected to the adjacent fixed block 92.

[0046] The use of the enhancement mechanism 9 of the device can enhance the hydraulic power. When the rock layer is relatively hard, a high-pressure water flow is introduced into the liquid guide pipe 91 through the liquid adding pipe 93, so that the high-pressure water flow enters the high-pressure nozzle 22, thereby enhancing the hydraulic power of the high-pressure nozzle 22 and improving the cutting efficiency.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A long borehole high pressure hydraulic slotting and permeability enhancement device, characterized in that: The invention comprises a connecting pipe (1), a slot cutter (2), a rotating member (21), a high-pressure nozzle (22), a drill bit (3) and an expansion mechanism (4); the upper side of the connecting pipe (1) is connected to the slot cutter (2); the middle part of the slot cutter (2) is rotatably connected to the rotating member (21); the left and right sides of the rotating member (21) are both connected to the high-pressure nozzle (22); the upper side of the slot cutter (2) is connected to the drill bit (3); and the slot cutter (2) is provided with an expansion mechanism (4) capable of pre-cutting and expanding the slotted portion of the rock formation.

2. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 1, characterized in that: The connecting pipe (1) is provided with threads.

3. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 1, characterized in that: The expansion mechanism (4) comprises a rotating ring (41), a motor (42), a transmission assembly (43), a first telescopic rod (44), a first spring (441), a top plate (45), a guide frame (46), a second spring (461) and an expansion plate (47). The upper part of the slot cutter (2) is rotatably connected to the rotating ring (41). The upper part of the slot cutter (2) is connected to the motor (42). The motor (42) is located above the rotating ring (41). A transmission assembly (43) is provided between the output shaft of the motor (42) and the rotating ring (41). The outer side of the rotating ring (41) is connected to a plurality of first telescopic rods (44). The telescopic ends of the first telescopic rods (44) are all connected to the top plates (45). The top plates (45) are all connected to the first telescopic rods (44) connected thereto. The outer side of the upper part of the slot cutter (2) is connected to a plurality of guide frames ( 46), expansion plates (47) are slidably connected between two adjacent guide frames (46), and second springs (461) are connected between the expansion plates (47) and the connected guide frames (46). When the expansion plates (47) move to the hydraulic cutting position, the drill bit (3) stops moving, the motor (42) is started, and the rotating ring (41) is rotated through the transmission component (43), driving the first telescopic rod (44) to rotate. When the top plate (45) moves to the expansion plate (47), the top plate (45) pushes the expansion plate (47) to move on the guide frame (46) through the action force of the first spring (441), and the second spring (461) is squeezed and contracted, so that the expansion plate (47) is extended to contact the drill hole. As the drill bit (3) and the slotting device (2) rotate, the expansion plate (47) rotates to expand the hydraulic cutting position of the rock formation.

4. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 3 is characterized in that: The transmission assembly (43) comprises a gear and a gear ring. The lower side of the output shaft of the motor (42) is connected to the gear, and the upper side of the rotating ring (41) is connected to the gear ring. The gear ring is meshed with the gear.

5. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 3 is characterized in that: The rotating mechanism (5) comprises a supporting seat (51), an electric push rod (52), a space cam (53) and a lifting plate (54). A plurality of supporting seats (51) are connected to the outer side of the middle part of the slotting device (2). The supporting seats (51) are all connected to the electric push rods (52). The upper side of the rotating member (21) is connected to the space cam (53). The lifting plate (54) is connected between the telescopic ends of the electric push rods (52). The lifting plate (54) contacts and cooperates with the space cam (53). The electric push rod (52) on the supporting seat (51) is started to push the lifting plate (54) to move, so that the lifting plate (54) triggers the space cam (53) to rotate, drives the rotating member (21) to rotate, and further causes the high-pressure nozzle (22) to rotate.

6. A long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 5, characterized in that: The device also includes an isolation mechanism (6), which includes a second telescopic rod (61), a screw rod (62), a rotating cylinder (63), an isolation baffle (64), a third spring (65) and a rotating wheel (66). The left and right sides of the upper part of the rotating member (21) are connected to the second telescopic rod (61), the telescopic end of the second telescopic rod (61) is connected to the screw rod (62), the screw rod (62) is threadedly connected to the rotating cylinder (63), the rotating cylinder (63) is rotatably connected to the rotating member (21), the rotating cylinder (63) is connected to the isolation baffle (64), and the isolation baffle (64) is connected to the adjacent high-pressure nozzle (22). A third spring (65) is connected between the screw rod (62) and the second telescopic rod (61) connected thereto, and a rotating wheel (66) is rotatably connected to the outer side of the screw rod (62). After the slot cutter (2) enters the borehole, the rotating wheel (66) on the screw rod (62) is always kept in contact with the inner wall of the borehole by the action force of the third spring (65). When the rotating wheel (66) moves to the pre-expanded slot, the rotating wheel (66) moves outward under the action force of the third spring (65), driving the screw rod (62) to move outward, so that the rotating cylinder (63) rotates, and drives the isolation baffle (64) to rotate and separate from the high-pressure nozzle (22).

7. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 6, characterized in that: The drill bit (3) further comprises a heating mechanism (7), which comprises a support block (71), a third telescopic rod (72), a heating cover (73), a heating tube (74) and a fourth spring (75). The drill bit (3) is connected with a plurality of support blocks (71), each of which is connected with a third telescopic rod (72). A heating cover (73) is connected between the telescopic ends of four third telescopic rods (72) on the left side, and a heating cover (73) is also connected between the telescopic ends of four third telescopic rods (72) on the right side. The inner side of each heating cover (73) is connected with a heating tube (74). A fourth spring (75) is connected between each third telescopic rod (72) and the connected heating cover (73). The heating cover (73) on the third telescopic rod (72) is always kept in contact with the inner wall of the drill hole by the action force of the fourth spring (75), and the heating tube (74) is heated at the same time.

8. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 7, characterized in that: The invention also comprises a stabilizing mechanism (8), which comprises a fourth telescopic rod (81), a stabilizing plate (82) and a fifth spring (83). The upper and lower parts of the connecting pipe (1) are both connected to a plurality of fourth telescopic rods (81), and the telescopic ends of the fourth telescopic rods (81) are both connected to stabilizing plates (82). The stabilizing plates (82) are both connected to the fourth telescopic rods (81) and a fifth spring (83) is connected between the stabilizing plates (82) and the connected fourth telescopic rods (81). Through the action force of the fifth spring (83), the stabilizing plates (82) on the fourth telescopic rods (81) always keep in contact with the inner wall of the borehole.

9. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 8, characterized in that: The stabilizing plates (82) are all arc-shaped.

10. The long-borehole high-pressure hydraulic slotting and permeability enhancement device according to claim 8, characterized in that: The device also comprises a reinforcing mechanism (9), the reinforcing mechanism (9) comprising a liquid guide tube (91), a fixing block (92) and a liquid adding tube (93); the lower side of the high-pressure nozzle (22) is connected to the liquid guide tube (91); the lower outer side of the connecting tube (1) is connected to a plurality of fixing blocks (92); the upper outer side of the connecting tube (1) is connected to a plurality of fixing blocks (92); the lower side of the liquid guide tube (91) is connected to the liquid adding tube (93); the liquid adding tube (93) is connected to an adjacent fixing block (92); a high-pressure water flow is introduced into the liquid guide tube (91) through the liquid adding tube (93), so that the high-pressure water flow enters the high-pressure nozzle (22).

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