Karst area subway tunnel limestone section grouting and water plugging drilling deviation rectifying device and karst area subway tunnel limestone section grouting and water plugging drilling deviation rectifying method

Abstract

The invention relates to the technical field of tunnel limestone section grouting and water plugging drilling, and discloses a karst area subway tunnel limestone section grouting and water plugging drilling deviation rectifying device and method.The karst area subway tunnel limestone section grouting and water plugging drilling deviation rectifying device comprises a first fixing sleeve, a push-pull mechanism is fixedly installed on the side face of the first fixing sleeve, and a driving mechanism is fixedly installed on the side face of the push-pull mechanism; and an adjusting mechanism is fixedly mounted on the side surface of the driving mechanism. When a drilled hole deviates, an air cylinder is opened to push a push rod to move, then a mounting piece, a bearing sleeve, a wheel and a rubber ring are pushed to move, the wheel and a driven wheel are pushed to move while the mounting piece moves, the push rod drives a push block to move when moving, and when the air cylinder is pushed outwards, the push block expands outwards to drive the driven wheel to move outwards. And then the gradually tensioned rack belt pushes the connecting plate and the abutting block to move upwards, the sliding sleeve and the guide rod move upwards, deviation correction operation can be conducted on the drill bit through the push-pull mechanism and the adjusting mechanism, and the drilling quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grouting and water blocking drilling in limestone sections of tunnels, and in particular to a deviation correction device and method for grouting and water blocking drilling in limestone sections of subway tunnels in karst areas. Background Art

[0002] During the construction of subway tunnels in karst areas (such as Jinan, the Spring City), the challenge of managing karst water in limestone sections is common. Karst water management is crucial for safe and efficient tunneling. Drilling holes in the karst areas of limestone sections and pre-grouting to block sudden water inrush channels is a common method of karst water management. Furthermore, tunnel construction often requires drilling, pumping out water, and burying test instruments. Geological drill bits (three-center drill bits) are often used for drilling holes, as they offer advantages such as fast drilling and easy slag removal.

[0003] However, when drilling long, deep holes exceeding 10 meters, the drill rod is prone to bending under its own weight and the jacking force of the drill rig. This can cause the drill bit to deviate from the designed hole position, affecting the quality of the hole. It can also cause intense friction between the drill rod and the inner wall of the hole, making drilling difficult and damaging the drill rod. In existing technologies, when drilling short holes, the drill rod can remain straight. When drilling longer holes, typically exceeding 10 meters, the drill rod bends under its own weight and the jacking force of the drill rig. When drilling longer holes, and continuing beyond 10 meters, the hole is prone to bending and deviating from the designed hole position.

[0004] Traditional drill bit correction methods mostly involve lifting the drill bit up and then drilling down again, repositioning the drill bit, and then correcting the drilling trajectory. This results in a slower drilling speed and requires repeating this process multiple times, resulting in a slower correction speed and the depth needs to be corrected each time the drilling moves.

[0005] Therefore, it is necessary to provide a device and method for correcting the deviation of grouting and water blocking drilling in the limestone section of a subway tunnel in a karst area. Summary of the Invention

[0006] The purpose of the present invention is to provide a grouting and water blocking drilling correction device and method for limestone sections of subway tunnels in karst areas, so as to solve the problem that the drill rod may deviate when drilling deep and long holes proposed in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A grouting and water-blocking drilling correction device for the limestone section of a subway tunnel in a karst area, comprising a first fixed sleeve, a push-pull mechanism fixedly installed on the side of the first fixed sleeve, a driving mechanism fixedly installed on the side of the push-pull mechanism, and an adjusting mechanism fixedly installed on the side of the driving mechanism; the push-pull mechanism comprises a fixed block, the side of the fixed block is fixedly connected to the side of the first fixed sleeve, the side of the fixed block is fixedly installed with a cylinder, the end face of the cylinder push rod is fixedly installed with a push rod, a flat surface is fixedly provided on the side of the push rod, a mounting piece is fixedly provided on the end face of the push rod, a through hole is fixedly provided on the side of the mounting piece, a bearing sleeve is fixedly installed on the inner wall of the through hole, a connecting rod is fixedly installed on the inner wall of the bearing sleeve, a wheel is fixedly installed on the side of the connecting rod, a rubber ring is fixedly installed on the side of the wheel, and a connecting plate is fixedly installed on the side of the cylinder.

[0008] According to the above technical solution, the driving mechanism includes a fixing member, the side surface of the fixing member is fixedly connected to the side surface of the cylinder, the side surface of the fixing member is fixedly mounted with a servo motor, and the end surface of the servo motor transmission rod is fixedly mounted with a first bevel gear.

[0009] According to the above technical solution, a bearing seat is fixedly installed on the side of the cylinder, a motor wheel is fixedly installed on the inner wall of the bearing seat through a pin, a second bevel gear is fixedly installed on the end face of the motor wheel, and the tooth surface of the second bevel gear is meshed with the tooth surface of the first bevel gear.

[0010] According to the above technical solution, a rubber ring is rotatably mounted on the end face of the connecting rod through a bearing base, a rack belt is meshingly mounted on the side face of the rubber ring, and the tooth surface of the rack belt is meshingly connected with the tooth surface of the motor wheel.

[0011] According to the above technical solution, the adjustment mechanism includes a push block, the bottom end face of the push block is fixedly connected to the side face of the push rod, the fixed end face of the connecting plate is fixedly mounted with a guide rod, and the side face of the guide rod is slidably mounted with a sliding sleeve.

[0012] According to the above technical solution, a stop block is fixedly installed on the side of the sliding sleeve, an extrusion block is fixedly installed on the bottom end face of the stop block, the side face of the extrusion block is extrusion-contacted and linked to the side face of the rack belt, and the side face of the push block is extrusion-contacted and connected to the side face of the stop block.

[0013] According to the above technical solution, a first buffer pad is fixedly installed on the inner wall of the first fixing sleeve, a hinge is fixedly installed on the side of the first fixing sleeve, and a second fixing sleeve is fixedly installed on the side of the hinge.

[0014] According to the above technical solution, a second buffer pad is fixedly installed on the inner wall of the second fixing sleeve, a locking bolt is provided on the side of the second fixing sleeve, a connecting block is fixedly installed on the fixed end surface of the connecting plate, and a reinforcing rod is fixedly installed on the side of the connecting block.

[0015] Based on the above-mentioned device for rectifying the deviation of a grouting and water-blocking drilling hole in a limestone section of a subway tunnel in a karst area, the present invention further proposes a method for rectifying the deviation of a grouting and water-blocking drilling hole in a limestone section of a subway tunnel in a karst area; the method comprises the following steps:

[0016] Step 1: First, install the device on the side of the drill pipe by tightening the bolts, and then use the cylinder to push the wheel and rubber ring to adjust the outer diameter;

[0017] Step 2: Insert the drill rod and drill bit into the water channel. When the drill bit moves downward and causes the hole to deviate, the extension length of the wheel is adjusted by four cylinders to correct the drill bit position.

[0018] Step 3: When the drill bit and drill rod need to be driven up and down, first turn on the servo motor, then drive the second bevel gear through the first bevel gear to drive the motor wheel and the driven wheel to rotate, driving the wheel to move;

[0019] Step 4: When the cylinder drives the push rod to adjust, the push block contracts and the pressing block moves downward, and then the guide rod moves downward to drive the pressing block to squeeze the rack belt to contract.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The grouting and water-blocking drilling correction device and method for the limestone section of a subway tunnel in a karst area, when the borehole deviates, the cylinder is opened to push the push rod to move, and then the mounting part, bearing sleeve, wheel, and rubber ring are pushed to move. When the mounting part moves, the wheel and the driven wheel are pushed to move. When the push rod moves, it drives the push block to move, and then squeezes the stop block to move downward. At the same time, it moves downward through the stop block and the sliding sleeve, drives the connecting plate to move downward, and then squeezes the rack belt to contract, adapting to the contraction of the driven wheel. When the cylinder pushes outward, the push block expands outward, and then drives the driven wheel to move outward, and then pushes the connecting plate and the stop block upward through the gradually tensioned rack belt, and moves upward through the sliding sleeve and the guide rod. The push-pull mechanism and the adjustment mechanism can be used to correct the drill bit and improve the drilling quality.

[0022] 2) The grouting and water-blocking drilling correction device and method for the limestone section of the subway tunnel in the karst area, when it is necessary to drive the wheel to rotate and drive the device and the drill bit and drill rod to move, first turn on the servo motor, and then drive the first bevel gear installed on the end face of the servo motor drive rod to rotate, and then drive the second bevel gear to rotate through the first bevel gear, and then drive the motor wheel to rotate, and then drive the rack belt to rotate and drive the driven wheel to rotate, and then drive the wheel installed on the side of the connecting rod to rotate through the connecting rod, and increase the friction with the inner wall of the sleeve through the rubber pad, and then rotate to prevent slipping during movement, which can drive the wheel to rotate and adapt to the movement of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the three-dimensional structure of a grouting and water-blocking drilling deviation correction device and method for a limestone section of a subway tunnel in a karst area according to an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the reinforcing rod structure in an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the hinge structure in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism in an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the cylinder structure in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the push-pull mechanism structure in an embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the structure of the second bevel gear in an embodiment of the present invention.

[0030] In the figure: 1. first fixing sleeve; 2. first buffer pad; 3. hinge; 4. second fixing sleeve; 5. second buffer pad; 6. locking bolt; 7. push-pull mechanism; 701. fixing block; 702. cylinder; 703. connecting plate; 704. push rod; 705. mounting piece; 706. bearing sleeve; 707. wheel; 708. rubber ring; 709. connecting rod; 8. driving mechanism; 801. fixing piece; 802. servo motor; 803. first bevel gear; 804. bearing seat; 805. motor wheel; 806. second bevel gear; 807. driven wheel; 808. rack belt; 9. adjusting mechanism; 901. pushing block; 902. resisting block; 903. squeezing block; 904. sliding sleeve; 905. guide rod; 10. connecting block; 11. reinforcing rod. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] Combine Figure 1-Figure 7, a grouting and water-blocking drilling correction device and method for the limestone section of a subway tunnel in a karst area, comprising a first fixed sleeve 1, a push-pull mechanism 7 fixedly installed on the side of the first fixed sleeve 1, a driving mechanism 8 fixedly installed on the side of the push-pull mechanism 7, and an adjusting mechanism 9 fixedly installed on the side of the driving mechanism 8; the push-pull mechanism 7 comprises a fixed block 701, the side of the fixed block 701 is fixedly connected to the side of the first fixed sleeve 1, a cylinder 702 fixedly installed on the side of the fixed block 701, a push rod 704 fixedly installed on the end face of the push rod of the cylinder 702, a flat surface fixedly opened on the side of the push rod 704, a mounting piece 705 fixedly installed on the end face of the push rod 704, a through hole fixedly opened on the side of the mounting piece 705, a bearing sleeve 706 fixedly installed on the inner wall of the through hole, A connecting rod 709 is fixedly mounted on the inner wall of the bearing sleeve 706, a wheel 707 is fixedly mounted on the side of the connecting rod 709, a rubber ring 708 is fixedly mounted on the side of the wheel 707, a connecting plate 703 is fixedly mounted on the side of the cylinder 702, the adjusting mechanism 9 includes a push block 901, the bottom end surface of the push block 901 is fixedly connected to the side of the push rod 704, a guide rod 905 is fixedly mounted on the fixed end surface of the connecting plate 703, a sliding sleeve 904 is slidably mounted on the side of the guide rod 905, a stop block 902 is fixedly mounted on the side of the sliding sleeve 904, an extrusion block 903 is fixedly mounted on the bottom end surface of the stop block 902, the side of the extrusion block 903 is extrusion-contacted and linked to the side of the rack belt 808, and the side of the push block 901 is extrusion-contacted and connected to the side of the stop block 902;

[0034] Specifically, first, open the locking bolt 6, then put the device on the side of the drill pipe through the first fixing sleeve 1 and the second fixing sleeve 4, and use the first buffer pad 2 and the second buffer pad 5 for buffering and protection, and then place the device on the inner wall of the sleeve; when the drilling hole deviates, open the cylinder 702 to push the push rod 704 to move, and then push the mounting member 705, the bearing sleeve 706, the wheel 707, and the rubber ring 708 to move, and then adjust the position. When the mounting member 705 moves, it will push the wheel 707 and the driven wheel 807 When the cylinder 702 pushes outward, the push block 901 expands outward, thereby driving the driven wheel 807 to move outward, and then the extrusion block 903 and the resist block 902 are pushed upward by the gradually tightened rack belt 808, and move upward through the sleeve 904 and the guide rod 905.

[0035] Example 2

[0036] See Figure 1-Figure 7, it is further obtained that the driving mechanism 8 includes a fixing member 801, the side of the fixing member 801 is fixedly connected to the side of the cylinder 702, a servo motor 802 is fixedly installed on the side of the fixing member 801, a first bevel gear 803 is fixedly installed on the end face of the transmission rod of the servo motor 802, a bearing seat 804 is fixedly installed on the side of the cylinder 702, a motor wheel 805 is fixedly installed on the inner wall of the bearing seat 804 through a pin, a second bevel gear 806 is fixedly installed on the end face of the motor wheel 805, the tooth surface of the second bevel gear 806 is meshed with the tooth surface of the first bevel gear 803, and the end face of the connecting rod 709 A rubber ring 708 is rotatably installed on the bearing base, and a rack belt 808 is meshedly installed on the side of the rubber ring 708. The tooth surface of the rack belt 808 is meshed and connected with the tooth surface of the motor wheel 805. A first buffer pad 2 is fixedly installed on the inner wall of the first fixed sleeve 1, a hinge 3 is fixedly installed on the side of the first fixed sleeve 1, a second fixed sleeve 4 is fixedly installed on the side of the hinge 3, a second buffer pad 5 is fixedly installed on the inner wall of the second fixed sleeve 4, a locking bolt 6 is provided on the side of the second fixed sleeve 4, a connecting block 10 is fixedly installed on the fixed end face of the connecting plate 703, and a reinforcing rod 11 is fixedly installed on the side of the connecting block 10.

[0037] Specifically, when it is necessary to drive the wheel 707 to rotate and drive the device and the drill bit and drill rod to move, the servo motor 802 is first turned on, which drives the first bevel gear 803 installed on the end face of the servo motor 802 to rotate, and then drives the second bevel gear 806 to rotate through the first bevel gear 803, and then drives the motor wheel 805 to rotate, and then drives the rack belt 808 to rotate and drives the driven wheel 807 to rotate, and then drives the wheel 707 installed on the side of the connecting rod 709 to rotate through the connecting rod 709, and increases the friction with the inner wall of the sleeve through the rubber pad 708 to prevent slipping during movement;

[0038] In this embodiment, the connecting block 10 and the reinforcing rod 11 serve as devices for connecting the upper and lower sides, thereby improving the structural strength.

[0039] Working principle: First, open the locking bolt 6, and then put the device on the side of the drill pipe through the first fixing sleeve 1 and the second fixing sleeve 4, and use the first buffer pad 2 and the second buffer pad 5 for buffering and protection, and then place the device on the inner wall of the sleeve; when the drilling hole is offset, open the cylinder 702 to push the push rod 704 to move, and then push the mounting part 705, the bearing sleeve 706, the wheel 707, and the rubber ring 708 to move, and then adjust the position. When the mounting part 705 moves, it will push the wheel 707 and the driven wheel 807 to move. When the push rod 704 moves further, it drives the push block 901 to move, and then squeezes the block 902 to move downward. At the same time, the block 902 and the sliding sleeve 904 move downward, driving the squeezing block 903 to move downward and squeeze the rack belt 808 to contract, thereby adapting to the contraction of the driven wheel 807. When the cylinder 702 is pushed outward, the push block 901 expands outward, thereby driving the driven wheel 807 to move outward, and then the extrusion block 903 and the stop block 902 are pushed upward through the gradually tensioned rack belt 808, and move upward through the sliding sleeve 904 and the guide rod 905; when it is necessary to drive the wheel 707 to rotate and drive the device and the drill bit and drill rod to move, first turn on the servo motor 802, and then drive the first bevel gear 803 installed on the end face of the servo motor 802 drive rod to rotate, and then drive the second bevel gear 806 to rotate through the first bevel gear 803, and then drive the motor wheel 805 to rotate, and then drive the rack belt 808 to rotate and drive the driven wheel 807 to rotate, and then drive the wheel 707 installed on the side of the connecting rod 709 to rotate through the connecting rod 709, and increase the friction with the inner wall of the sleeve through the rubber pad 708 to prevent slipping during movement.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A grouting and water-blocking drilling correction device for limestone sections of subway tunnels in karst areas, comprising a first fixing sleeve (1), characterized in that: A push-pull mechanism (7) is fixedly mounted on the side of the first fixed sleeve (1), a driving mechanism (8) is fixedly mounted on the side of the push-pull mechanism (7), and an adjusting mechanism (9) is fixedly mounted on the side of the driving mechanism (8); The push-pull mechanism (7) comprises a fixed block (701), the side of the fixed block (701) is fixedly connected to the side of the first fixed sleeve (1), a cylinder (702) is fixedly installed on the side of the fixed block (701), a push rod (704) is fixedly installed on the end face of the push rod of the cylinder (702), a flat surface is fixedly provided on the side of the push rod (704), a mounting member (705) is fixedly installed on the end face of the push rod (704), a through hole is fixedly provided on the side of the mounting member (705), a bearing sleeve (706) is fixedly installed on the inner wall of the through hole, a connecting rod (709) is fixedly installed on the inner wall of the bearing sleeve (706), a wheel (707) is fixedly installed on the side of the connecting rod (709), a rubber ring (708) is fixedly installed on the side of the wheel (707), and a connecting plate (703) is fixedly installed on the side of the cylinder (702).

2. The grouting and water blocking drilling correction device for limestone sections of subway tunnels in karst areas according to claim 1 is characterized by: The driving mechanism (8) comprises a fixing member (801), the side surface of the fixing member (801) being fixedly connected to the side surface of the cylinder (702), a servo motor (802) being fixedly mounted on the side surface of the fixing member (801), and a first bevel gear (803) being fixedly mounted on the end surface of a transmission rod of the servo motor (802).

3. The grouting and water blocking drilling correction device for limestone sections of subway tunnels in karst areas according to claim 1 is characterized by: A bearing seat (804) is fixedly mounted on the side of the cylinder (702), a motor wheel (805) is fixedly mounted on the inner wall of the bearing seat (804) via a pin, a second bevel gear (806) is fixedly mounted on the end face of the motor wheel (805), and the tooth surface of the second bevel gear (806) is meshed with the tooth surface of the first bevel gear (803).

4. The device for correcting the deviation of a grouting and water-blocking drilling hole in a limestone section of a subway tunnel in a karst area according to claim 1, characterized in that: The end face of the connecting rod (709) is rotatably mounted with a rubber ring (708) via a bearing base, and a rack belt (808) is meshedly mounted on the side face of the rubber ring (708), wherein the tooth surface of the rack belt (808) is meshedly connected with the tooth surface of the motor wheel (805).

5. The device for correcting the deviation of a grouting and water blocking drilling hole in a limestone section of a subway tunnel in a karst area according to claim 1, characterized in that: The adjusting mechanism (9) comprises a push block (901), the bottom end surface of the push block (901) is fixedly connected to the side surface of the push rod (704), a guide rod (905) is fixedly installed on the fixed end surface of the connecting plate (703), and a sliding sleeve (904) is slidably installed on the side surface of the guide rod (905).

6. The device for rectifying deviation of grouting and water blocking drilling in limestone section of subway tunnel in karst area according to claim 5, characterized in that: A stop block (902) is fixedly mounted on the side of the sliding sleeve (904), and an extrusion block (903) is fixedly mounted on the bottom end surface of the stop block (902). The side surface of the extrusion block (903) is extrusion-contacted and linked to the side surface of the rack belt (808), and the side surface of the push block (901) is extrusion-contacted and connected to the side surface of the stop block (902).

7. The device for correcting the deviation of a grouting and water blocking drilling hole in a limestone section of a subway tunnel in a karst area according to claim 1, characterized in that: A first buffer pad (2) is fixedly mounted on the inner wall of the first fixing sleeve (1), a hinge (3) is fixedly mounted on the side of the first fixing sleeve (1), and a second fixing sleeve (4) is fixedly mounted on the side of the hinge (3).

8. The device for correcting the deviation of a grouting and water-blocking drilling hole in a limestone section of a subway tunnel in a karst area according to claim 1, characterized in that: A second buffer pad (5) is fixedly mounted on the inner wall of the second fixing sleeve (4), a locking bolt (6) is provided on the side of the second fixing sleeve (4), a connecting block (10) is fixedly mounted on the fixed end surface of the connecting plate (703), and a reinforcing rod (11) is fixedly mounted on the side of the connecting block (10).

9. A method for rectifying the deviation of a grouting and water blocking drilling hole in a limestone section of a subway tunnel in a karst area, characterized in that: The following steps are involved: Step 1: First, the device is mounted on the side of the drill pipe by means of a locking bolt (6), and then the outer diameter is adjusted by pushing the wheel (707) and the rubber ring (708) through the cylinder (702); Step 2: Insert the drill rod and the drill bit into the water gushing channel. When the drill bit moves downward and causes the hole to deviate, the extension length of the wheel (707) is adjusted by the four cylinders (702) to correct the position of the drill bit. Step 3: When the drill bit and the drill rod need to be driven up and down, the servo motor (802) is first turned on, and then the second bevel gear (806) is driven by the first bevel gear (803), thereby driving the motor wheel (805) and the driven wheel (807) to rotate, thereby driving the wheel (707) to move; Step 4: When the cylinder (702) drives the push rod (704) to adjust, the push block (901) contracts to squeeze the stop block (902) downward, and then the guide rod (905) moves downward to drive the squeeze block (903) to squeeze the rack belt (808) to contract.

Images