A rotary drilling device for complex geology and its use method

Abstract

The present invention relates to a rotary drilling device for complex geology applied to the field of construction engineering manufacturing and a method for using the same. The method can reduce the workload of reinforcement and improve work efficiency by reinforcing a small part of the hole wall. At the same time, the hole wall on the upper part is set as a slope based on area B. On the slope, the direction of gravity is at a certain angle to the slope surface, and part of the gravity of the soil is decomposed into a component force along the slope surface, which reduces the shear force along the slope surface, making it difficult for the hole wall to collapse, greatly improving the overall stability of the hole wall. At the same time, when it is necessary to strengthen the strength of area C, the lifting rod is rotated to drive the rear filling box to move to the position of area C, and the top and bottom ends of the rear filling box are both located on one side of area B, and then the driving motor is started to drive the spiral rod to rotate to fill the mud into the inner wall of area C, which can reinforce area C and further improve the overall stability of the hole wall.

Description

Technical Field

[0001] The invention relates to a rotary drilling device, in particular to a rotary drilling device for complex geology applied in the field of construction engineering manufacturing and a use method thereof. Background Art

[0002] The rotary drilling device is a rotary drilling and hole-forming equipment used in pile construction technology. When the rotary drilling device is constructed in loose geology, the hole wall is prone to collapse under the action of gravity. The Chinese patent application with application number CN202111348583.3 discloses a quicksand geological rotary drilling drill and a long casing mud hole-forming method using the rotary drilling drill. During the rotary drilling process, the first casing plate and the second casing plate are used to squeeze the hole wall away from each other to reinforce the hole wall to prevent collapse. The Chinese patent application with application number CN202111263835.2 discloses a pile foundation engineering rotary drilling hole wall compaction device and method, which compacts the hole wall soil by controlling the opening and closing mechanism of the compaction component.

[0003] The above method requires reinforcement of the entire inner wall of the hole, resulting in a large amount of construction work, and the reinforced hole wall is in a vertical state. In the vertical wall, all soil pressure is applied vertically, the force is concentrated, and it is easy to exceed the bearing range of the soil and cause collapse. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the wall of the rotary drilling hole is in a vertical state. In the vertical wall, all soil pressure is applied vertically, the force is concentrated, and it is easy to exceed the bearing range of the soil and cause collapse.

[0005] To solve the above problems, the present invention provides a rotary drilling device for complex geology, including a rotary lifting rod, the bottom end of the rotary lifting rod is fixedly connected to an upper connecting plate, the bottom end of the upper connecting plate is fixedly connected to an intermediate rod, the bottom end of the intermediate rod is fixedly connected to a lower connecting plate, the bottom end of the lower connecting plate is fixedly connected to a rotary drilling head, the top end of the lower connecting plate is fixedly connected to a plurality of evenly distributed conical reamers, the conical reamers include a lower telescopic drive fixedly connected to the lower connecting plate, the telescopic end of the lower telescopic drive is fixedly connected to the reaming rod, the top end of the upper connecting plate is fixedly connected to a plurality of evenly distributed reinforcers, the reinforcer includes an upper telescopic drive fixedly connected to the upper connecting plate, the telescopic end of the upper telescopic drive is fixedly connected to a frame, and an extrusion roller is rotatably connected between the top and bottom ends of the frame.

[0006] A method for using a rotary drilling device for complex geology, comprising the following steps:

[0007] When the rotary drilling device is working, the rotary lifting rod drives the rotary drilling head to rotate downward to drill holes. The drilling stops after drilling 1-2 meters deep, and the area formed by this drilling is recorded as area A. Then the rotary lifting rod drives the rotary drilling head to continue drilling downward until the reinforcement moves to the bottom of area A. Then the rotary lifting rod stops moving downward but keeps rotating, and the upper telescopic drive drives the squeezing roller to slowly extend and shorten toward the hole wall. During the extension process, the squeezing roller contacts the hole wall and rotates to pressurize and fix the hole wall, and this pressurized and fixed area is recorded as The conical reamer moves to the top of the B area, and then rotates the lifting rod upward and rotates, driving the conical reamer to move to the top of the B area, and moves toward the top of the A area, and the area from the top of the B area to the top of the A area is recorded as the C area. At the same time, during the movement of the conical reamer in the C area, the reaming rod is driven to slowly extend by the lower telescopic drive. The hole wall is cut during the slow extension of the reaming rod, so that the C area is conical, and after the conical reamer moves to the top of the C area, the lower telescopic drive drives the reaming rod to retract, and the above operations are repeated to complete the drilling construction.

[0008] As a further improvement of the present application, the lower telescopic drive and the upper telescopic drive are both composed of a protective shell, the inner wall of one end of the protective shell is fixedly connected to a hydraulic telescopic rod, the inner wall of the other end of the protective shell is fixedly connected to a frame block, and one end of the hydraulic telescopic rod passes through the frame block and is slidably connected thereto.

[0009] As a further improvement of the present application, a rear supplement box is arranged on the upper side of the upper connecting plate, and holes are opened at the top and bottom ends of the rear supplement box, and the rotating lifting rod passes through the holes and is fixedly connected thereto.

[0010] As a further improvement of the present application, a plurality of outlet holes are opened on the side wall of the rear supplement box, and an inner tube is fixedly connected to the inner wall of the outlet hole, and one end of the inner tube is located on the inner side of the rear supplement box.

[0011] As another improvement of the present application, a connecting shell is fixedly connected between one end of the inner tube and the inner wall of the rear supplementary box, and a driving motor is fixedly connected to the inner wall of the connecting shell.

[0012] As another improved supplement of the present application, a feed hole is opened at one end of the inner tube away from the connecting shell, the inner wall of the inner tube is rotatably connected to a screw rod, and the output end of the drive motor is fixedly connected to one end of the screw rod.

[0013] As another improved supplement of the present application, a material conveying pipe is fixedly connected to the top of the rear supplement box, and the height of the rear supplement box is greater than or equal to the height of the C area.

[0014] In summary, the device can reduce the workload of reinforcement and improve work efficiency by reinforcing a small part of the hole wall. At the same time, the upper hole wall is set as a slope based on area B. On the slope, the direction of gravity is at a certain angle to the slope surface, and part of the gravity of the soil is decomposed into a component along the slope surface, which reduces the shear force along the slope surface, making it difficult for the hole wall to collapse, greatly improving the overall stability of the hole wall. At the same time, when it is necessary to strengthen the strength of area C, mud can be provided to the interior of the rear filling box through the feed pipe, and the lifting rod is rotated to drive the rear filling box to move to the position of area C, and the top and bottom ends of the rear filling box are both located on one side of area B, and then the drive motor is started to drive the spiral rod to rotate to fill the mud into the inner wall of area C, which can reinforce area C and further improve the overall stability of the hole wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a state diagram of the rotary drilling head when drilling a hole in the first and second embodiments of the present application;

[0016] Figure 2 This is a state diagram of the reinforcer reinforcing the hole wall in the first embodiment of the present application;

[0017] Figure 3 This is a state diagram of the conical reamer when reaming in the first embodiment of the present application;

[0018] Figure 4 This is a state diagram of the rear filling tank when injecting mud in the second embodiment of the present application;

[0019] Figure 5 This is a front cross-sectional view of the lower telescopic drive in the first embodiment of the present application;

[0020] Figure 6 This is a front cross-sectional view of the upper telescopic drive in the first embodiment of the present application;

[0021] Figure 7 This is a front cross-sectional view of the rear fill box in the second embodiment of the present application.

[0022] Description of the numbers in the figure:

[0023] 1. Rotating lifting rod; 2. Upper connecting plate; 3. Middle rod; 4. Lower connecting plate; 5. Rotary digging head; 6. Lower telescopic drive; 7. Expanding rod; 8. Upper telescopic drive; 9. Frame; 10. Extrusion roller; 11. Protective shell; 1101. Hydraulic telescopic rod; 1102. Frame block; 12. Perforation; 13. Rear filling box; 14. Outlet hole; 15. Inner tube; 16. Connecting shell; 17. Feed hole; 18. Driving motor; 19. Screw rod; 20. Feed pipe. DETAILED DESCRIPTION

[0024] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0025] The first implementation method:

[0026] Figure 1-3 and Figure 5-6 A rotary drilling device for complex geological conditions is shown, comprising a rotary lifting rod 1 with lifting and rotating functions, the bottom end of the rotary lifting rod 1 is fixedly connected to an upper connecting plate 2, the bottom end of the upper connecting plate 2 is fixedly connected to an intermediate rod 3, the bottom end of the intermediate rod 3 is fixedly connected to a lower connecting plate 4, the bottom end of the lower connecting plate 4 is fixedly connected to a rotary drilling head 5, the top end of the lower connecting plate 4 is fixedly connected to a plurality of evenly distributed conical reamers, the conical reamers comprise a lower telescopic drive 6 fixedly connected to the lower connecting plate 4, the telescopic end of the lower telescopic drive 6 is fixedly connected to a reaming rod 7, the top end of the upper connecting plate 2 is fixedly connected to a plurality of evenly distributed reinforcers, the reinforcer comprises an upper telescopic drive 8 fixedly connected to the upper connecting plate 2, the telescopic end of the upper telescopic drive 8 is fixedly connected to a frame 9, and a squeezing roller 10 is rotatably connected between the top and bottom ends of the frame 9.

[0027] A method for using a rotary drilling device for complex geology, comprising the following steps:

[0028] When the rotary drilling device is working, the rotary lifting rod 1 drives the rotary drilling head 5 to rotate downward to drill holes. After drilling 1-2 meters deep, the drilling stops, and the area formed by the drilling is recorded as area A. Then the rotary lifting rod 1 drives the rotary drilling head 5 to continue drilling downward until the reinforcement moves to the bottom of area A. Then the rotary lifting rod 1 stops moving downward but keeps rotating, and the upper telescopic driver 8 drives the squeezing roller 10 to slowly extend and shorten toward the hole wall. The squeezing roller 10 contacts the hole wall and rotates during the extension process to pressurize and fix the hole wall, and the pressurized and fixed area The area is marked as area B, and then the lifting rod 1 is rotated to move upward and rotate, driving the conical reamer to move to the top of area B, and move toward the top of area A, and the area from the top of area B to the top of area A is marked as area C. At the same time, during the movement of the conical reamer in area C, the reaming rod 7 is slowly extended by the lower telescopic driver 6. During the slow extension of the reaming rod 7, the hole wall is cut to make area C conical. After the conical reamer moves to the top of area C, the lower telescopic driver 6 drives the reaming rod 7 to contract, and the above operations are repeated to complete the drilling construction.

[0029] The above arrangement can reduce the workload of reinforcement and improve work efficiency by reinforcing a small part of the hole wall. At the same time, the upper hole wall is set as a slope based on area B. On the slope, the direction of gravity is at a certain angle to the slope surface, and part of the gravity of the soil is decomposed into a component force along the slope surface, which reduces the shear force along the slope surface, making it difficult for the hole wall to collapse, thereby greatly improving the overall stability of the hole wall.

[0030] The lower telescopic drive 6 and the upper telescopic drive 8 are both composed of a protective shell 11, and the inner wall of one end of the protective shell 11 is fixedly connected to a hydraulic telescopic rod 1101, and the inner wall of the other end of the protective shell 11 is fixedly connected to a frame block 1102, and one end of the hydraulic telescopic rod 1101 passes through the frame block 1102 and is slidably connected thereto.

[0031] When the lower telescopic drive 6 and the upper telescopic drive 8 drive the reaming rod 7 and the squeezing roller 10 to extend or shorten, the hydraulic telescopic rod 1101 is extended or shortened.

[0032] The second implementation method:

[0033] Figure 1 , Figure 4 and Figure 7 A rotary drilling device for complex geology is shown. Different from the first embodiment, a rear-fill box 13 is provided on the upper side of the upper connecting plate 2. The top and bottom ends of the rear-fill box 13 are provided with through holes 12. The rotating lifting rod 1 passes through the through holes 12 and is fixedly connected thereto. A plurality of outlet holes 14 are provided on the side wall of the rear-fill box 13. An inner tube 15 is fixedly connected to the inner wall of the outlet hole 14. One end of the inner tube 15 is located on the inner side of the rear-fill box 13. A connecting shell 16 is fixedly connected between one end of the inner tube 15 and the inner wall of the rear-fill box 13. A driving motor 18 is fixedly connected to the inner wall of the connecting shell 16. A feeding hole 17 is provided at the end of the inner tube 15 away from the connecting shell 16. A screw rod 19 is rotatably connected to the inner wall of the inner tube 15. The output end of the driving motor 18 is fixedly connected to one end of the screw rod 19. A feed pipe 20 is fixedly connected to the top of the rear-fill box 13. The height of the rear-fill box 13 is greater than or equal to the height of area C.

[0034] Through the above arrangement, when it is necessary to strengthen the strength of area C, mud can be provided to the interior of the rear filling box 13 through the feed pipe 20, and at the same time, the lifting rod 1 is rotated to drive the rear filling box 13 to move to the position of area C, and the top and bottom ends of the rear filling box 13 are both located on one side of area B. Then, the drive motor 18 is started to drive the spiral rod 19 to rotate to fill the mud into the inner wall of area C, which can reinforce area C and further improve the overall stability of the hole wall.

[0035] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A rotary drilling device for complex geological conditions, comprising a rotary lifting rod (1) having lifting and rotating functions, characterized in that: The bottom end of the rotary lifting rod (1) is fixedly connected to an upper connecting plate (2), the bottom end of the upper connecting plate (2) is fixedly connected to an intermediate rod (3), the bottom end of the intermediate rod (3) is fixedly connected to a lower connecting plate (4), the bottom end of the lower connecting plate (4) is fixedly connected to a rotary drilling head (5), the top end of the lower connecting plate (4) is fixedly connected to a plurality of evenly distributed conical reamers, the conical reamer comprises a lower telescopic drive (6) fixedly connected to the lower connecting plate (4), the telescopic end of the lower telescopic drive (6) is fixedly connected to a reaming rod (7), the top end of the upper connecting plate (2) is fixedly connected to a plurality of evenly distributed reinforcers, the reinforcers comprise an upper telescopic drive (8) fixedly connected to the upper connecting plate (2), the telescopic end of the upper telescopic drive (8) is fixedly connected to a frame (9), and a squeezing roller (10) is rotatably connected between the top and bottom ends of the frame (9); The rotating lifting rod (1) drives the rotary drilling head (5) to rotate downwards and drill holes. The drilling stops after drilling 1-2 meters deep, and the area formed by the drilling is recorded as area A. The rotating lifting rod (1) drives the rotary drilling head (5) to continue drilling downwards until the reinforcement moves to the bottom of area A. The rotating lifting rod (1) stops moving downwards but keeps rotating, and the upper telescopic drive (8) drives the squeezing roller (10) to slowly extend and shorten toward the hole wall. The squeezing roller (10) contacts the hole wall and rotates during the extension process, thereby The pressurized and fixed area is recorded as area B. The lifting rod (1) is then rotated to move upward and rotate, driving the conical reamer to move to the top of area B and to the top of area A. The area from the top of area B to the top of area A is recorded as area C. At the same time, during the movement of the conical reamer in area C, the reaming rod (7) is driven to slowly extend through the lower telescopic drive (6). During the slow extension of the reaming rod (7), the hole wall is cut, so that area C is a cone with a wide top and a narrow bottom, and the hole wall is vertical as a whole.

2. A rotary drilling device for complex geology according to claim 1, characterized in that: The lower telescopic drive (6) and the upper telescopic drive (8) are both composed of a protective shell (11); the inner wall at one end of the protective shell (11) is fixedly connected to a hydraulic telescopic rod (1101); the inner wall at the other end of the protective shell (11) is fixedly connected to a frame block (1102); one end of the hydraulic telescopic rod (1101) passes through the frame block (1102) and is slidably connected thereto.

3. A rotary drilling device for complex geology according to claim 2, characterized in that: A rear supplement box (13) is arranged on the upper side of the upper connecting plate (2), and a through hole (12) is provided at the top and bottom ends of the rear supplement box (13), and the rotating lifting rod (1) passes through the through hole (12) and is fixedly connected thereto.

4. A rotary drilling device for complex geology according to claim 3, characterized in that: The side wall of the rear supplement box (13) is provided with a plurality of outlet holes (14), the inner wall of the outlet hole (14) is fixedly connected with an inner tube (15), and one end of the inner tube (15) is located on the inner side of the rear supplement box (13).

5. A rotary drilling device for complex geology according to claim 4, characterized in that: A connecting shell (16) is fixedly connected between one end of the inner tube (15) and the inner wall of the rear supplementary box (13), and a driving motor (18) is fixedly connected to the inner wall of the connecting shell (16).

6. A rotary drilling device for complex geology according to claim 5, characterized in that: A feed hole (17) is provided at one end of the inner tube (15) away from the connecting shell (16); a screw rod (19) is rotatably connected to the inner wall of the inner tube (15); and an output end of the drive motor (18) is fixedly connected to one end of the screw rod (19).

7. A method for using a rotary drilling device for complex geological conditions according to any one of claims 3 to 6, characterized in that: The following steps are involved: When the rotary drilling device is working, the rotary lifting rod (1) drives the rotary drilling head (5) to rotate downwards and drill holes. After drilling 1-2 meters deep, the drilling stops downwards, and the area formed by the drilling is recorded as area A. Then, the rotary lifting rod (1) drives the rotary drilling head (5) to continue drilling downwards until the reinforcement moves to the bottom of area A. Then, the rotary lifting rod (1) stops moving downwards but keeps rotating, and the upper telescopic drive (8) drives the squeezing roller (10) to slowly extend and shorten toward the hole wall. During the extension process, the squeezing roller (10) contacts the hole wall and rotates, pressurizing and fixing the hole wall, and the pressurized and fixed hole wall is pressed. The area is recorded as area B, and then the lifting rod (1) is rotated to move upward and rotate, driving the conical reamer to move to the top of area B and move toward the top of area A, and the area from the top of area B to the top of area A is recorded as area C. At the same time, during the movement of the conical reamer in area C, the reaming rod (7) is driven to slowly extend through the lower telescopic drive (6). During the slow extension of the reaming rod (7), the hole wall is cut, so that area C is conical. After the conical reamer moves to the top of area C, the lower telescopic drive (6) drives the reaming rod (7) to retract, and the above operation is repeated to complete the drilling construction.

8. The method for using a rotary drilling device for complex geology according to claim 7, characterized in that: A material delivery pipe (20) is fixedly connected to the top end of the rear filling box (13), and the height of the rear filling box (13) is greater than or equal to the height of the C area.

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