Threaded type directional working well excavation pile casing device and using method thereof

Abstract

The invention discloses a thread type directional working well excavation pile casing device and a using method thereof, and relates to the technical field of well opening construction equipment, the thread type directional working well excavation pile casing device comprises a torsion jacking machine, a supporting disc seat, a torsion jacking machine head, a torsion transmission cap, a thread type pile casing, a torsion receiving cap, an equipment mounting port and an auxiliary device; in the sinking operation, forward rotation force is provided through the torsion jacking machine, forward rotation sinking of the threaded pile casing is driven through transmission of the torsion transmission cap, subsection sinking installation can be achieved, operation is easy, convenient and efficient, and the requirement for the working depth of the pile casing of a working well can be effectively met; during upward pulling operation, the torsion jacking machine is rotated reversely, upward pulling of the threaded pile casing is achieved, after a torsion jacking machine head is detached, the last sinking section pile casing is connected for reverse rotation operation, the lower space is backfilled every time one section of pile casing is lifted, and construction safety and smooth follow-up work are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of well excavation construction equipment, and in particular to a threaded directional working well excavation casing device and a use method thereof. Background Art

[0002] In recent years, with the rapid development of urban economy and the continuous deepening of urbanization, the traditional industry of municipal construction has developed in the direction of scale. In engineering construction, a large number of pipeline construction is inevitable. Micro-pipe jacking technology, as a modern construction technology with the advantages of flexibility and efficiency, is more convenient than traditional construction. It can not only improve the effectiveness of engineering construction, but also ensure the quality of construction. However, a large number of working wells need to be excavated during micro-pipe jacking construction. On average, a working well needs to be set up for every 60 meters of jacking distance, which makes the excavation and support of the working wells large. In addition, the construction sites are mostly in complex underground areas, which leads to the limitation of the working surface of the working well construction. How to quickly carry out the construction of working wells has become an urgent problem to be solved in the current micro-pipe jacking construction process. At present, the conventional excavation and support construction method of the top pipe working well is to break the existing road surface, use machinery to dig, and after digging to a certain depth, hoist the steel casing into the working well, use the pipe shaking machine to sink the steel casing to support the surrounding soil, and then excavate the lower soil, repeat the steps until the working well depth reaches the design requirements, and then weld each section of the steel casing. This construction method is time-consuming and there is a risk of working in a confined space during welding. In this context, the present invention adopts a threaded directional working well excavation casing sinking and extraction construction method, which effectively solves the problem of large on-site working well construction volume and complex construction environment. Summary of the invention

[0003] The purpose of the present invention is to provide a threaded directional working well excavation casing device and a method of using the same in order to solve the above problems, thereby solving the problems of large construction volume and complex construction environment in existing working wells.

[0004] In order to solve the above problems, the present invention provides a technical solution: a threaded directional working well excavation casing device, comprising a torque jacking machine, a support disc seat, a torque jacking machine head, a torque transmission cap, a threaded casing, a torque receiving cap, an equipment installation port and an auxiliary device; the torque jacking machine is fixedly connected inside the auxiliary device, and an equipment installation port is provided inside the torque jacking machine; the top of the support disc seat is fixedly connected to the bottom of the torque jacking machine; the torque jacking machine head is located inside the equipment installation port, and a torque transmission cap is provided at the bottom of the torque jacking machine head; there are several threaded casings, and the several threaded casings are connected to each other through torque transmission caps, wherein the uppermost threaded casing is connected to the torque transmission cap at the bottom of the torque jacking machine head through a torque receiving cap.

[0005] Preferably, the specific structure of the auxiliary device includes a machine base, a cylinder 1, a connecting arm, a cylinder 2, a connecting block, a lifting arm, a guide sleeve, a motor 1, a guide slot seat, a guide slot, a screw, a movable seat, wheels and a hook; wheels are provided at the four corners of the bottom of the machine base; there are two cylinders 1, the outsides of the two cylinders 1 are fixedly connected to the inside of the right side of the machine base, and the ends of the upper piston rods of the two cylinders 1 are fixedly connected to the lower right side of the connecting arm; the upper outside of the cylinder 2 is fixedly connected to the central inside of the connecting arm; the outside of the guide sleeve is fixedly connected to the inside of the left side of the connecting arm; the outside of the lifting arm is vertically movably connected to the inside of the guide sleeve, A hook is movably connected to the lower end of the lifting arm, and a connecting block is fixedly connected to the top of the lifting arm, and the lower right side of the connecting block is fixedly connected to the end of the upper piston rod of the second oil cylinder; the lower outer side of the guide groove seat is fixedly connected to the left side of the inside of the machine base, and a vertical guide groove is opened on the right side of the guide groove seat; the motor 1 is fixedly connected to the top of the guide groove seat; the screw is movably connected to the center of the guide groove, and the upper center of the screw is fixedly connected to the lower output shaft of the motor; the outer side of the movable seat is movably connected to the inside of the guide groove, and the threaded hole set in the center of the movable seat is connected to the screw, and the right outer side of the movable seat is fixedly connected to the left side of the torque jacking machine.

[0006] Preferably, the wheels are wheels with brakes.

[0007] Preferably, the motor 1 is a servo motor or a stepper motor.

[0008] Preferably, the guide groove is a T-shaped guide groove.

[0009] A sinking method for a threaded directional working well excavation casing device, the sinking method comprising: A. At the selected location, dig a working well to a depth that meets the receiving surface; B. Use auxiliary devices to set the torque jacking machine frame to the selected position; C. Install the support plate seat at the bottom of the torque jacking machine; D. Install the first section of threaded casing from the equipment installation port inside the torque jacking machine; E. Install the torque jacking machine head from the equipment installation port inside the torque jacking machine; F. Install the first section of threaded casing to the bottom of the torque jacking head through the torque receiving cap; G. Check the equipment after installation; H. Turn on the torque jacking machine, which provides a positive rotational force to drive the torque jacking machine head to form a downward rotational force, which is transmitted to the torque receiving cap through the torque transmission cap, driving the threaded casing to rotate forward and sink; I. Sink the first section of threaded casing. After the first section of threaded casing sinks to the specified depth, lift out the torque jacking machine head from the equipment installation port, separate the torque receiving cap and the torque transmission cap of the first section of steel casing, wherein the torque transmission cap of the first section of casing is separated from the torque jacking machine head; J. Lift and sink a new section of threaded casing from the equipment installation port, connect the lower part of the new section of sleeve to the torque transmission cap of the previous sleeve, lift the torque jacking head from the equipment installation port, connect the upper torque receiving cap of the new sleeve to the bottom of the torque jacking head, and perform jacking; K. Repeat step J until the casing operation depth of the working well is completed.

[0010] A method for pulling out a threaded directional working well excavation casing device, the method comprising: a. When the depth of the working well meets the design requirements and the pipe jacking construction is completed, the torque jacking machine will rotate in the opposite direction; b. Wait for the torque jacking machine head and the upper part of the threaded casing to rise from the equipment installation port according to the spiral jacking force before carrying out the hoisting operation; c. Push the torque force into the machine head for removal; d. Connect the torque receiving cap on the upper part of the last sinking section of the threaded casing to the torque jacking machine and perform reverse rotation operation; e. After the last section of the threaded casing is pushed out from the equipment installation port, the removal and hoisting operation is carried out; f. The empty area at the bottom of the working pit is backfilled with saltpeter mixed soil; g. Repeat the above work. Each time the threaded casing is lifted, the lower space is backfilled until the threaded casing has finished rising.

[0011] The beneficial effects of the present invention are as follows: (1) The present invention has a reasonable and simple structure, low production cost and convenient installation. The motor 1 in the auxiliary device drives the screw to rotate to move the movable seat in the guide groove, and the height of the torque jacking machine can be adjusted. The wheels with brakes are used to facilitate movement and fixing of the position. The oil cylinder 1 and the oil cylinder 2 can adjust the hook position to facilitate lifting of the equipment, and the support plate seat increases the contact area with the ground.

[0012] (2) During the sinking operation, the present invention provides a forward rotational force through the torque jacking machine, which is transmitted through the torque transmission cap to drive the threaded casing to rotate forward and sink. The casing can be installed in sections, which is easy and efficient to operate and can effectively meet the depth requirements of the working well casing operation.

[0013] (3) During the pulling operation, the present invention rotates the torque jacking machine in the reverse direction to pull up the threaded casing. After the torque jacking machine head is removed, the last sinking section of the casing is connected and rotated in the reverse direction. Each time a section of the casing is lifted, the lower space is backfilled to ensure construction safety and smooth progress of subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 for Figure 1 sectional view of .

[0016] Figure 3 for Figure 1 A partial schematic diagram of .

[0017] Figure 4 for Figure 1 A local three-dimensional image of .

[0018] Figure 5 This is a schematic diagram of the structure of the auxiliary device.

[0019] 1-torque jacking machine; 2-support plate seat; 3-torque jacking machine head; 4-torque transmission cap; 5-threaded casing; 6-torque receiving cap; 7-equipment installation port; 8-auxiliary device; 81-machine base; 82-oil cylinder one; 83-connecting arm; 84-oil cylinder two; 85-connecting block; 86-lifting arm; 87-guide sleeve; 88-motor one; 89-guide groove seat; 810-guide groove; 811-screw; 812-movable seat; 813-wheel; 814-hook. DETAILED DESCRIPTION like Figures 1 to 4 As shown, this specific embodiment adopts the following technical scheme: a threaded directional working well excavation casing device, including a torque jacking machine 1, a support disc seat 2, a torque jacking machine head 3, a torque transmission cap 4, a threaded casing 5, a torque receiving cap 6, an equipment installation port 7 and an auxiliary device 8; the torque jacking machine 1 is fixedly connected to the inside of the auxiliary device 8, and an equipment installation port 7 is provided inside the torque jacking machine 1; the top of the support disc seat 2 is fixedly connected to the bottom of the torque jacking machine 1; the torque jacking machine head 3 is located inside the equipment installation port 7, and a torque transmission cap 4 is provided at the bottom of the torque jacking machine head 3; there are several threaded casings 5, and several threaded casings 5 ​​are connected to each other through the torque transmission cap 4, wherein the uppermost threaded casing 5 is connected to the torque transmission cap 4 at the bottom of the torque jacking machine head 3 through the torque receiving cap 6.

[0021] like Figure 5As shown, the specific structure of the auxiliary device 8 includes a machine base 81, a cylinder 1 82, a connecting arm 83, a cylinder 2 84, a connecting block 85, a lifting arm 86, a guide sleeve 87, a motor 1 88, a guide slot seat 89, a guide slot 810, a screw 811, a movable seat 812, a wheel 813 and a hook 814; wheels 813 are provided at the four corners of the bottom of the machine base 81; there are two cylinders 1 82, the exteriors of the two cylinders 1 82 are fixedly connected to the inside of the right side of the machine base 81, and the ends of the upper piston rods of the two cylinders 1 82 are fixedly connected to the lower right side of the connecting arm 83; the exterior of the upper side of the cylinder 2 84 is fixedly connected to the central interior of the connecting arm 83; the exterior of the guide sleeve 87 is fixedly connected to the inside of the left side of the connecting arm 83; the exterior of the lifting arm 86 is vertically movably connected to the guide sleeve 87 Internally, a hook 814 is movably connected to the lower end of the lifting arm 86, a connecting block 85 is fixedly connected to the top of the lifting arm 86, and the lower right side of the connecting block 85 is fixedly connected to the upper piston rod end of the cylinder 84; the lower external side of the guide groove seat 89 is fixedly connected to the left side of the machine base 81, and a vertical guide groove 810 is opened on the right side of the guide groove seat 89; the motor 88 is fixedly connected to the top of the guide groove seat 89; the screw 811 is movably connected to the center of the guide groove 810, and the upper center of the screw 811 is fixedly connected to the lower output shaft of the motor 88; the movable seat 812 is externally movably connected to the inside of the guide groove 810, the threaded hole arranged in the center of the movable seat 812 is connected to the screw 811, and the right external side of the movable seat 812 is fixedly connected to the left side of the torque jacking machine 1.

[0022] Among them, the wheel 813 is a wheel with a brake; the motor 88 is a servo motor or a stepper motor; and the guide groove 810 is a T-shaped guide groove.

[0023] A sinking method for a threaded directional working well excavation casing device, the sinking method comprising: A. At the selected location, dig a working well to a depth that meets the receiving surface; B. Setting up the torque jacking machine 1 to the selected position through the auxiliary device 8; C. Install the support disc seat 2 at the bottom of the torque jacking machine 1; D. Install the first section of threaded casing 5 from the equipment installation opening 7 inside the torque jacking machine 1; E. Install the torque jacking machine head 3 from the equipment installation port 7 inside the torque jacking machine 1; F. Install the first section of threaded casing 5 to the bottom of the torque jacking head 3 through the torque receiving cap 6; G. Check the equipment after installation; H. Turn on the torque jacking machine 1, which provides a positive rotational force to drive the torque jacking machine head 3 to form a downward rotational force, which is transmitted to the torque receiving cap 6 through the torque transmission cap 4, and drives the threaded casing 5 to rotate forward and sink; I. Sink the first section of the threaded casing 5. After the first section of the threaded casing 5 sinks to a specified depth, lift out the torque jacking machine head 3 from the equipment installation port 7, separate the torque receiving cap 6 and the torque transmission cap 4 of the first section of the steel casing, wherein the torque transmission cap 4 of the first section of the casing is separated from the torque jacking machine head 3; J. Lift and sink a new section of threaded casing 5 from the equipment installation port 7, connect the lower part of the new section of sleeve to the torque transmission cap 4 of the previous sleeve, lift the torque jacking head 3 from the equipment installation port 7, connect the upper torque receiving cap 6 of the new sleeve to the bottom of the torque jacking head 3, and perform jacking; K. Repeat step J until the casing operation depth of the working well is completed.

[0024] A method for pulling out a threaded directional working well excavation casing device, the method comprising: a. When the depth of the working well meets the design requirements and the pipe jacking construction is completed, the torque jacking machine 1 is rotated in the reverse direction; b. After the torque jacking head 3 and the upper part of the threaded casing 5 are lifted from the equipment installation port 7 according to the spiral jacking force, the hoisting operation is carried out; c. Push the torque into the machine head 3 for removal; d. Connect the torque receiving cap 6 on the upper part of the last sinking section of the threaded casing 5 to the torque jacking machine 1 to perform reverse rotation operation; e. After the last section of the threaded casing 5 is pushed out from the equipment installation port 7, the removal and hoisting operation is carried out; f. The empty area at the bottom of the working pit is backfilled with saltpeter mixed soil; g. Repeat the above work, and each time the threaded casing 5 is lifted, the lower space is backfilled until the threaded casing 5 is completely lifted.

[0025] The use status of the present invention is: the present invention has a reasonable and simple structure, low production cost, and convenient installation. When preparing for work, first dig a working well at a selected position to a depth that meets the receiving surface, and then set up the torque jacking machine 1 at the selected position through the auxiliary device 8. The four corners of the bottom of the machine base 81 of the auxiliary device 8 are provided with wheels 813 with brakes, which are convenient for moving and fixing the position. The motor 88 (which can be a servo motor or a stepping motor) drives the screw 811 to rotate, so that the movable seat 812 moves up and down in the guide groove 810 (T-shaped guide groove), thereby adjusting the height of the torque jacking machine 1. The oil cylinder 1 82 and the oil cylinder 2 84 can adjust the position of the hook 814 through the connecting arm 83, the connecting block 85 and other components, which is convenient for lifting. Transport equipment, install a support disc seat 2 at the bottom of the torque jacking machine 1, thereby increasing the contact area with the ground; when installing the equipment, first install the first section of threaded casing 5 from the equipment installation port 7 inside the torque jacking machine 1, and then install the torque jacking machine head 3 from the equipment installation port 7 inside the torque jacking machine 1, and then install the first section of threaded casing 5 to the bottom of the torque jacking machine head 3 through the torque receiving cap 6, and then check the equipment after installation is completed; and when sinking operation, first turn on the torque jacking machine 1, the torque jacking machine 1 provides a forward rotational force, driving the torque jacking machine head 3 to form a downward rotational force, which is transmitted to the torque receiving cap 6 through the torque transmission cap 4, driving the threaded casing 5 is rotated forward and sunk to sink the first section of threaded casing 5. After the first section of threaded casing 5 sinks to the specified depth, the torque jacking machine head 3 is hoisted out from the equipment installation port 7, and the torque receiving cap 6 and the torque transmission cap 4 of the first section of steel casing are separated, wherein the torque transmission cap 4 of the first section of casing is separated from the torque jacking machine head 3, and a new section of threaded casing 5 is hoisted and sunk from the equipment installation port 7, and the lower part of the new section of sleeve is connected to the torque transmission cap 4 of the previous sleeve, and the torque jacking machine head 3 is hoisted from the equipment installation port 7, and the upper torque receiving cap 6 of the new sleeve is connected to the bottom of the torque jacking machine head 3 for jacking, and this step is repeated until the working well casing operation depth is completed; when the working well depth meets the set depth, the working well depth is 0.08mm. The design requires that after the pipe jacking construction is completed, the pulling operation begins. When pulling up, first rotate the torque jacking machine 1 in the opposite direction, and wait for the torque jacking machine head 3 and the upper part of the threaded casing 5 to be lifted from the equipment installation port 7 according to the spiral jacking force before performing the hoisting operation, remove the torque jacking machine head 3, connect the torque receiving cap 6 on the last section of the threaded casing 5 to the torque jacking machine 1, and perform the opposite rotation operation, wait for the last section of the threaded casing 5 to be pushed out from the equipment installation port 7, and then perform the dismantling and hoisting operation. The vacant area at the bottom of the working shaft is backfilled with saltpeter mixed soil, and repeat the above work. Every time a section of the threaded casing 5 is lifted, the lower space is backfilled until the threaded casing 5 is completely raised.

[0026] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "screw-on" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0029] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

Claims

1. A threaded directional working well excavation casing device, characterized in that: It comprises a torque jacking machine (1), a support disc seat (2), a torque jacking machine head (3), a torque transmission cap (4), a threaded casing (5), a torque receiving cap (6), an equipment installation port (7) and an auxiliary device (8); The torque jacking machine (1) is fixedly connected to the inside of the auxiliary device (8), and a device installation opening (7) is provided inside the torque jacking machine (1); The top of the support disc seat (2) is fixedly connected to the bottom of the torque jacking machine (1); The torque jacking head (3) is located inside the equipment installation opening (7), and a torque transmission cap (4) is provided at the bottom of the torque jacking head (3); There are a plurality of threaded protective sleeves (5), and the plurality of threaded protective sleeves (5) are connected to each other via torque transmission caps (4), wherein the uppermost threaded protective sleeve (5) is connected to the torque transmission cap (4) at the bottom of the torque jacking machine head (3) via a torque receiving cap (6).

2. The threaded directional working well excavation casing device and the use method thereof according to claim 1 are characterized in that: The specific structure of the auxiliary device (8) includes a machine base (81), a first oil cylinder (82), a connecting arm (83), a second oil cylinder (84), a connecting block (85), a lifting arm (86), a guide sleeve (87), a first motor (88), a guide groove seat (89), a guide groove (810), a screw rod (811), a movable seat (812), a wheel (813) and a hook (814); Wheels (813) are provided at the four corners of the bottom of the machine base (81); There are two oil cylinders (82), the outsides of the two oil cylinders (82) are fixedly connected to the inside of the right side of the machine base (81), and the ends of the upper piston rods of the two oil cylinders (82) are fixedly connected to the lower right side of the connecting arm (83); The upper outer portion of the second oil cylinder (84) is fixedly connected to the central inner portion of the connecting arm (83); The guide sleeve (87) is externally fixedly connected to the left interior of the connecting arm (83); The outside of the lifting arm (86) is vertically movably connected to the inside of the guide sleeve (87); the lower end of the lifting arm (86) is movably connected to a hook (814); the top of the lifting arm (86) is fixedly connected to a connecting block (85); and the lower right side of the connecting block (85) is fixedly connected to the upper piston rod end of the second oil cylinder (84); The lower exterior of the guide groove seat (89) is fixedly connected to the left interior of the machine base (81), and a vertical guide groove (810) is provided on the right side of the guide groove seat (89); The motor 1 (88) is fixedly connected to the top of the guide groove seat (89); The screw rod (811) is movably connected to the center of the guide groove (810), and the center of the upper side of the screw rod (811) is fixedly connected to the lower output shaft of the motor 1 (88); The outside of the movable seat (812) is movably connected to the inside of the guide groove (810), a threaded hole arranged in the center of the movable seat (812) is connected to the screw rod (811), and the right side of the movable seat (812) is fixedly connected to the left side of the torque jacking machine (1).

3. The threaded directional working well excavation casing device according to claim 2 is characterized in that: The wheel (813) is a wheel with a brake.

4. The threaded directional working well excavation casing device according to claim 2 is characterized in that: The motor 1 (88) is a servo motor or a stepper motor.

5. The threaded directional working well excavation casing device according to claim 2 is characterized in that: The guide groove (810) is a T-shaped guide groove.

6. A method for sinking and using the threaded directional well excavation casing device according to claim 1, characterized in that: The sinking method includes: A. At the selected location, dig a working well to a depth that meets the receiving surface; B. erecting the torque jacking machine (1) to a selected position by means of an auxiliary device (8); C. Install a support plate seat (2) at the bottom of the torque jacking machine (1); D. Install the first section of the threaded casing (5) from the equipment installation opening (7) inside the torque jacking machine (1); E. Install the torque jacking machine head (3) from the equipment installation opening (7) inside the torque jacking machine (1); F. Install the first section of the threaded casing (5) to the bottom of the torque jacking head (3) through the torque receiving cap (6); G. Check the equipment after installation; H. Turn on the torque jacking machine (1), which provides a positive rotational force to drive the torque jacking machine head (3) to form a downward rotational force, which is transmitted to the torque receiving cap (6) through the torque transmission cap (4), driving the threaded casing (5) to rotate and sink in the positive direction; I. sinking the first section of the threaded casing (5). After the first section of the threaded casing (5) has sunk to a specified depth, lifting the torque jacking machine head (3) from the equipment installation port (7), separating the torque receiving cap (6) and the torque transmission cap (4) of the first section of the steel casing, wherein the torque transmission cap (4) of the first section of the casing is separated from the torque jacking machine head (3); J. Lift and sink a new section of threaded casing (5) from the equipment installation opening (7), connect the lower part of the new section of sleeve to the torque transmission cap (4) of the previous sleeve, lift the torque jacking machine head (3) from the equipment installation opening (7), connect the upper torque receiving cap (6) of the new sleeve to the lower part of the torque jacking machine head (3), and carry out jacking; K. Repeat step J until the casing operation depth of the working well is completed.

7. A method for pulling out and using the threaded directional well excavation casing device according to claim 1, characterized in that: The pulling method includes: a. When the depth of the working well meets the design requirements and the pipe jacking construction is completed, the torque jacking machine (1) is rotated in the reverse direction; b. Wait for the torque jacking machine head (3) and the upper part of the threaded casing (5) to be lifted from the equipment installation opening (7) according to the screw jacking force before carrying out the hoisting operation; c. Push the torque force into the machine head (3) to remove it; d. Connect the torque receiving cap (6) on the upper part of the last lowered section of the threaded casing (5) to the torque jacking machine (1) and perform reverse rotation operation; e. After the last section of the threaded casing (5) is pushed out from the equipment installation opening (7), the removal and hoisting operation is carried out; f. The empty area at the bottom of the working pit is backfilled with saltpeter mixed soil; g. Repeat the above work, and each time the threaded casing (5) is lifted, the lower space is backfilled until the threaded casing (5) is completely lifted.

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