Vertical shaft torsion adjusting device for vertical shaft heading machine construction and working method of vertical shaft torsion adjusting device

Abstract

The invention discloses a vertical shaft torsion adjusting device for construction of a vertical shaft heading machine and a working method of the vertical shaft torsion adjusting device. The vertical shaft torsion adjusting device comprises four main cables and four adjusting cables, and one end of each main cable and one end of each adjusting cable are anchored in a steel cable anchoring box of a blade foot ring; the connecting ends, on the blade foot ring, of the main rope and the adjusting rope are obliquely arranged upwards, the horizontal projection direction of the main rope coincides with the diameter direction, passing through the connecting point, of the blade foot ring, the vertical component of the main rope is perpendicular to the plane of the blade foot ring, and the horizontal projection direction of the adjusting rope coincides with the tangential direction, at the connecting point, of the blade foot ring. The vertical component of the blade foot ring is perpendicular to the blade foot ring plane; and the four adjusting cables comprise two clockwise adjusting cables and two anticlockwise adjusting cables. The method has the advantages that the construction direction and speed can be more accurately controlled by actively adjusting the torsion angle of the vertical shaft, manual adjustment when the torsion angle is too large is avoided, a large amount of time and labor cost are saved, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical shaft construction, in particular to a vertical shaft torsion regulating device for vertical shaft boring machine construction and a working method thereof. Background Art

[0002] With the increasing demand for urban underground space projects and heightened environmental protection requirements, vertical shaft construction is moving toward deeper depths, more complex strata, and more precise construction. In recent years, a vertical shaft construction method combining caisson and mechanical excavation has become increasingly popular. This method uses a shaft boring machine for excavation and assembles prefabricated segments for lowering the shaft. This shaft boring machine-based caisson construction method offers numerous advantages, including minimal disturbance, high construction efficiency, variable excavation cross-sections, controllable overexcavation, and unmanned underground operations. It is gaining increasing attention both domestically and internationally.

[0003] Shaft caisson construction using a vertical shaft boring machine (TBM) is prone to overall shaft torsion, directly impacting well completion quality and construction safety. Because the outer walls of the segments are coated with highly fluid thixotropic slurry, they provide minimal friction and torque. When the TBM is operating, excavation generates a reaction force within the soil, subjecting the shaft to a horizontal force component and causing it to torsion. This shaft torsion can lead to numerous issues that impact construction safety and well completion quality, including misaligned shear pin holes, difficulty in segment assembly, low assembly quality, and poor segment stress conditions.

[0004] Currently, the most common torsion-resistant measure for vertical shafts constructed using the shaft boring machine method is to add a torsional restraint at the shafthead. However, this takes up space and poses a risk of construction difficulties. Furthermore, this method cannot actively adjust the torsion angle. Once torsion occurs, failure to promptly return to the initial angle will negatively impact the safety and accuracy of subsequent construction. Summary of the Invention

[0005] The purpose of the present invention is to provide a shaft torsion adjustment device for shaft boring machine construction and a working method thereof in accordance with the deficiencies of the above-mentioned prior art. The shaft torsion adjustment device includes a main cable and an adjustment cable. The main cable and the adjustment cable are each provided with four cables, and one end of the main cable and the adjustment cable are anchored in the cable anchor box of the blade foot ring. The horizontal projection direction of the main cable coincides with the diameter direction of the blade foot ring through the connection point, and its vertical component is perpendicular to the plane of the blade foot ring. The horizontal projection direction of the adjustment cable coincides with the tangent direction of the blade foot ring at the connection point, and its vertical component is perpendicular to the plane of the blade foot ring. The four adjustment cables include two clockwise adjustment cables and two counterclockwise adjustment cables. The working method can actively control the torsion angle of the shaft by adjusting the tension of the clockwise adjustment cable / counterclockwise adjustment cable and the tension of the main cable, thereby avoiding occupying additional construction space.

[0006] The purpose of the present invention is achieved by the following technical solutions: A shaft torsion adjustment device for shaft boring machine construction, the shaft torsion adjustment device comprises a main rope and an adjusting rope, the main rope and the adjusting rope are each provided with four ropes, and one end of the main rope and the adjusting rope are anchored in the steel rope anchor box of the blade foot ring, the four main ropes are evenly arranged along the outer circumference of the blade foot ring, and each adjusting rope is located at the midpoint of the arc between two adjacent main ropes; the connection ends of the main rope and the adjusting rope on the blade foot ring are both tilted upward, and the horizontal projection direction of the main rope is aligned with the diameter direction of the blade foot ring through the connection point The four adjusting cables coincide with each other in direction, and their vertical components are perpendicular to the plane of the blade foot ring. The horizontal projection direction of the adjusting cable coincides with the tangent direction of the blade foot ring at the connection point, and its vertical component is perpendicular to the plane of the blade foot ring. The four adjusting cables include two clockwise adjusting cables and two counterclockwise adjusting cables. The two clockwise adjusting cables are symmetrical about the center of the blade foot ring, and the two counterclockwise adjusting cables are symmetrical about the center of the blade foot ring. The adjacent clockwise adjusting cables and the counterclockwise adjusting cables are symmetrically arranged about the diameter axis passing through the center of the blade foot ring.

[0007] The steel cable anchor box includes a top plate, a bottom plate, an outer arc plate, an inner arc plate, a channel outer plate, a channel inner plate, a fixed plate and a support member. The outer arc side and the inner arc side of the top plate are respectively connected to the outer arc plate and the inner arc plate of the blade foot ring, and the two sides of the fixed plate are respectively connected to the inner arc plate and the outer arc plate of the blade foot ring. The bottom plate is installed on the blade panel of the blade foot ring, and the inner arc side of the inner arc plate is connected to the inner arc plate of the blade foot ring. The inner arc plate is divided into an upper inner arc plate and a lower inner arc plate. The upper end and the lower end of the upper inner arc plate are respectively connected to the top plate and the fixed plate, and the upper end and the lower end of the lower inner arc plate are respectively connected to the fixed plate and the bottom plate. The upper end of the channel outer plate The upper and lower ends of the channel inner plate are connected to the top plate and the fixed plate respectively, the upper and lower ends of the outer arc plate are connected to the channel outer plate and the bottom plate respectively, the side of the support member is connected to the outer arc plate, the upper and lower ends of the support member are connected to the fixed plate and the bottom plate respectively, the outer arc plate of the blade ring and the fixed plate are provided with through holes allowing the main rope or the adjusting rope to pass through, a channel is formed between the channel outer plate and the channel inner plate, the main rope or the adjusting rope is connected to the anchor plate through the through holes of the outer arc plate of the blade ring, the channel and the through holes of the fixed plate in turn.

[0008] The channel inner plate is provided with a blade foot ring reinforcement support.

[0009] The outer arc plate of the blade foot ring is connected to the blade panel via a connecting plate. A grouting waterstop is provided on the outer side of the outer arc plate of the blade foot ring. The grouting waterstop is located at the upper end of the connecting plate.

[0010] The other ends of the main rope and the adjusting rope are both connected to a settlement unit on the ground.

[0011] The blade foot ring is evenly provided with shear pin holes or bolt holes along its circumferential direction.

[0012] The blade foot ring is evenly provided with pipe segment hoisting holes along its circumference.

[0013] A method for operating a shaft torsion adjustment device for shaft boring machine construction, the method comprising the following steps: S1: excavating a foundation pit using a shaft boring machine, and assembling the blade foot ring in the foundation pit; S2: Lower the main cable, the clockwise torsion adjustment cable, and the counterclockwise torsion adjustment cable to the height of the blade foot ring, connect the cables to the blade foot ring through the cable anchor box, and after all the cables are threaded, adjust the tension of the cables on the ground to keep them in a tensioned state; S3: Continue excavating the footage using the shaft boring machine, and install standard rings on the blade foot ring in sequence, while monitoring the torsion angle of the shaft; when clockwise torsion is required, simultaneously increase the tension of the two clockwise adjustment cables or reduce the tension of the two counterclockwise adjustment cables, and adjust the tension of the main cable to maintain the height of the shaft; when counterclockwise torsion is required, simultaneously increase the tension of the two counterclockwise adjustment cables or reduce the tension of the two clockwise adjustment cables, and adjust the tension of the main cable to maintain the height of the shaft.

[0014] The advantages of the present invention are: 1. The active control of the torsion angle by the shaft torsion adjustment device can greatly improve construction efficiency. By actively adjusting the shaft torsion angle, the construction direction and speed can be controlled more accurately. This avoids manual adjustment when the torsion angle is too large, saving a lot of time and labor costs and improving construction efficiency. 2. The shaft torsion adjustment device provides a highly controllable environment for caisson construction, ensuring construction safety and well completion quality. Through precise torsion angle control, position and direction errors during construction are minimized, ensuring accurate positioning of segment bolt holes and shear pin holes, greatly improving construction quality and safety. Furthermore, the device avoids the risk of human error and accidents that may occur during manual adjustment of the torsion angle. 3. The shaft torsion adjustment device is simple to operate and easy to install. Compared with installing an anti-torsion device at the wellhead, this device uses the same construction process as the main cable tensioning, making installation more convenient. When actively adjusting the torsion angle, the operator only needs to increase the corresponding anchor cable tension on the ground. The adjustment is fully automated and easy to operate. 4. The shaft torsion adjustment device is highly adaptable and versatile; it is designed to meet various geological and construction conditions and has excellent adaptability. Whether facing complex geological conditions, narrow working spaces or other challenges, the device can maintain efficient and stable performance. 5. This device can also be used as a backup safety measure for shaft construction; the adjustment rope of this device can share part of the tension of the main rope, and can be used as a temporary safety measure when the main rope is abnormally damaged to avoid a large inclination of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the shaft torsion adjustment device of the present invention; Figure 2 A top view of the shaft torsion adjustment device of the present invention; Figure 3 is a cross-sectional view of the shaft torsion adjustment device of the present invention; Figure 4 This is a structural diagram of the blade foot of the present invention; Figure 5 This is a flow chart of the shaft torsion adjustment of the present invention; like Figures 1 to 5 As shown, the marks in the figure represent: Main cable 1, clockwise torsion adjustment cable 2, counterclockwise torsion adjustment cable 3, standard ring 4, blade foot ring 5, shear pin hole 6, cable anchor box 7, grouting waterstop 8, blade foot ring reinforcement support 9, segment lifting hole 10, settlement unit 11, top plate 12, bottom plate 13, outer arc plate 14, inner arc plate 15, channel outer plate 16, channel inner plate 17, fixed plate 18, support 19, outer arc plate 20, inner arc plate 21, blade panel 22, connecting plate 23. DETAILED DESCRIPTION

[0016] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: Example: Figures 1 to 4As shown, this embodiment relates to a shaft torsion adjustment device for shaft boring machine construction, which includes a main rope 1 and an adjusting rope. The main rope 1 and the adjusting rope are each provided with four ropes, and one end of the main rope 1 and the adjusting rope are anchored in the steel rope anchor box 7 of the blade foot ring 5. The other ends of the main rope 1 and the adjusting rope are connected to the settlement unit 11 on the ground. The settlement unit 11 is used to tension the main rope 1 and the adjusting rope. The four main ropes 1 are evenly arranged along the outer ring direction of the blade foot ring 5. Each adjusting rope is located at the midpoint of the arc between two adjacent main ropes 1. The main rope 1 uses a stranded wire with a larger diameter, and the adjusting rope uses a stranded wire with a smaller diameter. The connection ends of the main cable 1 and the adjustment cable on the blade ring 5 are both tilted upward. The horizontal projection of the main cable 1 (i.e., the portion of the main cable 1 exposed outside the blade ring 5) coincides with the diameter of the blade ring 5 passing through the connection point, and its vertical component is perpendicular to the plane of the blade ring 5. The horizontal projection of the adjustment cable (i.e., the portion of the adjustment cable exposed outside the blade ring 5) coincides with the tangent direction of the blade ring 5 at the connection point, and its vertical component is perpendicular to the plane of the blade ring 5. The four adjustment cables include two clockwise adjustment cables 2 and two counterclockwise adjustment cables 3. The two clockwise adjustment cables 2 are symmetrical about the center of the blade ring 5, and the two counterclockwise adjustment cables 3 are symmetrical about the center of the blade ring 5. Adjacent clockwise adjustment cables 2 and counterclockwise adjustment cables 3 are arranged symmetrically about the diametrical axis passing through the center of the blade ring 5. In addition, the blade foot ring 5 (composed of several blade feet) and the standard ring 4 (composed of several pipe segments) are respectively evenly provided with shear pin holes 6 (or bolt holes, which have the same function as the shear pin holes 6) along their circumferential directions. The shear pin holes 6 are used to install shear pins, thereby realizing the connection between the blade foot ring 5 and the standard ring 4 and between the standard ring 4 and the standard ring 4, and have the functions of positioning and increasing the shear resistance of the structure. The blade foot ring 5 and the standard ring 4 are respectively evenly provided with pipe segment hoisting holes 10 along their circumferential directions. The pipe segment hoisting holes 10 are connected to the hoisting equipment to facilitate the hoisting of the blade foot ring 5 (blade foot) and the standard ring 4 (pipe segment). In this embodiment, each blade foot (pipe segment) is provided with 3 shear pin holes 6, and the blade foot ring 5 (standard ring 4) is provided with a total of 12 shear pins 6. Each blade foot (pipe segment) is provided with 2 pipe segment hoisting holes 10, and the blade foot ring 5 (standard ring 4) is provided with a total of 8 pipe segment hoisting holes 10.

[0017] like Figures 1 to 4As shown, the cable anchor box 7 includes a top plate 12, a bottom plate 13, an outer arc plate 14, an inner arc plate 15, a channel outer plate 16, a channel inner plate 17, a fixed plate 18 and a support member 19. The outer arc side and the inner arc side of the top plate 12 are respectively connected to the outer arc plate 20 and the inner arc plate 21 of the blade foot ring 5, and the two sides of the fixed plate 18 are respectively connected to the inner arc plate 21 and the outer arc plate 14 of the blade foot ring 5. The bottom plate 13 is installed on the blade panel 22 of the blade foot ring 5, and the inner arc side of the inner arc plate 15 is connected to the inner arc plate 21 of the blade foot ring 5. The inner arc plate 15 is divided into an upper inner arc plate and a lower inner arc plate. The upper end and the lower end of the upper inner arc plate are respectively connected to the top plate 12 and the fixed plate 18, and the upper end and the lower end of the lower inner arc plate are respectively connected to the fixed plate 18 and the bottom plate 13. The upper end and the lower end of the channel outer plate 16 are respectively connected to the outer arc plate of the blade foot ring 5 20 is connected to the fixed plate 18, the upper and lower ends of the channel inner plate 17 are connected to the top plate 12 and the fixed plate 18 respectively, the upper and lower ends of the outer arc plate 14 are connected to the channel outer plate 16 and the bottom plate 13 respectively, the side of the support member 19 is connected to the outer arc plate 14, the upper and lower ends of the support member 19 are connected to the fixed plate 18 and the bottom plate 13 respectively, the outer arc plate 20 of the blade foot ring 5 and the fixed plate 18 are provided with through holes for allowing the main cable 1 or the adjustment cable to pass through, a channel is formed between the channel outer plate 16 and the channel inner plate 17, the main cable 1 or the adjustment cable passes through the through hole of the outer arc plate 20 of the blade foot ring 5, the channel and the through hole of the fixed plate 18 in turn and is connected to the anchor plate (not shown), the anchor plate is installed on the lower side of the fixed plate 18 and a clamping device (such as a wedge clamp, the wedge clamp is used to clamp the steel cable and is installed in the wedge-shaped hole of the anchor plate) is provided on the anchor plate. A blade foot ring reinforcement support 9 is provided on the inner plate 17 of the channel. The setting direction of the blade foot ring reinforcement support 9 is the same as the tensioning direction of the main cable 1 and the adjusting cable (the portion of the main cable 1 and the adjusting cable located inside the blade foot ring 5). The blade foot ring reinforcement support 9 serves to strengthen the structure. The outer arc plate 20 of the blade foot ring 5 is connected to the blade panel 22 by a connecting plate 23. A grouting waterstop 8 is provided on the outside of the outer arc plate 20 of the blade foot ring 5. The grouting waterstop 8 is located at the upper end of the connecting plate 23. By grouting into the grouting waterstop 8, the grouting waterstop 8 expands and adheres tightly to the soil, thereby achieving a water-stopping effect.

[0018] like Figures 1 to 5 As shown, this embodiment also relates to a working method of a shaft torsion adjustment device for shaft boring machine construction, which mainly includes the following steps: S1: A foundation pit is excavated using a shaft boring machine, and the blade foot ring 5 is assembled in the foundation pit.

[0019] Specifically, when the standard ring 4 and the blade foot ring 5 are prefabricated in the factory template, the prefabricated pipe sections should be strictly determined according to the positions of the shear pin holes 6 and the pipe segment lifting holes 10 to ensure that the pipe sections meet the accuracy requirements during the lifting and splicing process.

[0020] Before construction of the blade foot ring 5, a foundation pit is excavated within the ring beam. The blade foot ring 5 is assembled within the pit. Because the blade foot is heavy and the allowable bearing capacity of the existing foundation is less than the shaft's own weight, a plain concrete cushion is first poured at the bottom of the pit. The annular steel plates, delivered to the construction site, are positioned at the designated location at the bottom of the pit and welded together to form a circle. The cable anchor box 7 is then placed in its designated position.

[0021] S2: Lower the main cable 1, the clockwise torsion adjustment cable 2 and the counterclockwise torsion adjustment cable 3 to the height of the blade foot ring 5, and connect the steel cables (main cable 1, clockwise torsion adjustment cable 2 and counterclockwise torsion adjustment cable 3) and the blade foot ring 5 through the steel cable anchor box 7. After all the steel cables are threaded, adjust the tension of the steel cables on the ground to keep the steel cables in a tensioned state.

[0022] Specifically, after the ground pump station of the wellbore hoisting system is powered on, the main cable 1, clockwise torsion adjustment cable 2, and counterclockwise torsion adjustment cable 3 are lowered to the height of the blade foot ring 5. The cables are then connected to the blade foot ring 5 through the cable anchor box 7. After all cables are threaded, the tension of the cables is adjusted on the ground to keep them in a tensioned state. Before threading, a careful check should be made to ensure that the position of each cable on the hydraulic jack corresponds to the hole position on the component clamping top anchor plate. The cables should be threaded in sequence, and dislocation, crossing in the middle, and twisting should be avoided during threading.

[0023] S3: Continue excavating using the shaft boring machine and sequentially install standard rings 4 on the blade rings 5 ​​while monitoring the shaft's torsion angle. When clockwise torsion is required, simultaneously increase the tension of the two clockwise adjustment cables 2 or decrease the tension of the two counterclockwise adjustment cables 3, and adjust the tension of the main cable 1 to maintain the shaft's height. When counterclockwise torsion is required, simultaneously increase the tension of the two counterclockwise adjustment cables 3 or decrease the tension of the two clockwise adjustment cables 2, and adjust the tension of the main cable 1 to maintain the shaft's height.

[0024] Specifically, after preparatory work is completed, excavation parameters are set and the equipment begins excavation progress. The four main cables 1 primarily provide suspension force to balance the wellbore's gravity and control its lifting and lowering. The two clockwise torsion adjustment cables 2 are primarily used to induce clockwise torsion in the wellbore. The two counterclockwise torsion adjustment cables 3 are primarily used to induce counterclockwise torsion in the wellbore. By setting the adjustment cables in the ground monitoring room to correspond to the hydraulic cylinder stroke of the settlement unit 11, the tension in the adjustment cables can be controlled, and the torsion angle generated by the torque applied to the wellbore can be controlled. When actively adjusting the wellbore's clockwise torsion, both clockwise adjustment cables 2 should be tensioned simultaneously, maintaining the same tension to prevent the wellbore from tilting. At the same time, the tension in the main cables 1 can be appropriately reduced to maintain the wellbore's height. When actively adjusting the wellbore's counterclockwise torsion, both counterclockwise adjustment cables 3 should be tensioned simultaneously, maintaining the same tension to prevent the wellbore from tilting. At the same time, the tension in the main cables 1 can be appropriately reduced to maintain the wellbore's height. The tension of the four main cables 1 should be kept consistent to ensure that the wellbore does not tilt. After changing the tension of the torsion adjustment cable, the torsion angle can be considered to be completed only when it remains unchanged for a certain period of time.

[0025] The caisson torsion adjustment device actively adjusts the torsion angle before the target ring segments are assembled. The actual construction steps are: assembly and debugging of the tunneling equipment; the tunneling main machine excavates the soil to the target height; the hydraulic lifting system is lowered and the torsion angle is controlled by the caisson torsion adjustment device at the same time; the verticality and horizontality of the shaft are measured and the inclination of the shaft is controlled; the target ring segments are assembled; the torsion angle is controlled and adjusted; the next step of soil excavation is carried out, and the cycle is repeated until the design height is reached.

[0026] The working principle of the caisson torsion adjustment device is: When the tension in the torsion adjustment cable is increased, the wellbore is subjected to a force in the direction of cable tension. When performing clockwise torsion adjustment, since the two clockwise torsion adjustment cables 2 are arranged tangentially along the cylinder and in opposite directions, increasing the cable tension generates a clockwise torque, causing the wellbore to twist clockwise. When performing counterclockwise torsion adjustment, the principle is the same as for clockwise torsion adjustment. In particular, counterclockwise torsion adjustment can be performed by reducing the tension in the clockwise torsion adjustment cable 2. As the tension in the clockwise torsion adjustment cable 2 decreases, the clockwise torque applied to the wellbore decreases, causing the wellbore to twist counterclockwise. Since the two clockwise torsion adjustment cables 2 are arranged at the same angle as the wellbore, their upward force components are the same, preventing changes in the wellbore's verticality. Similarly, the two counterclockwise torsion adjustment cables 3 are arranged at the same angle as the wellbore, and their upward force components are the same, preventing changes in verticality. The tension of the four main cables (1) primarily bears the weight of the wellbore. The tension of the adjustment cables is lower than that of the main cables, preventing the wellbore from being raised excessively during torsion adjustment. In particular, if the wellbore height needs to be strictly maintained, the tension of the main cables can be appropriately reduced to offset the upward force of the adjustment cables.

[0027] The beneficial technical effects of this embodiment are: 1. The active control of the torsion angle by the shaft torsion adjustment device can greatly improve construction efficiency. By actively adjusting the shaft torsion angle, the construction direction and speed can be controlled more accurately. This avoids manual adjustment when the torsion angle is too large, saving a lot of time and labor costs and improving construction efficiency. 2. The shaft torsion adjustment device provides a highly controllable environment for caisson construction, ensuring construction safety and well completion quality. Through precise torsion angle control, position and direction errors during construction are minimized, ensuring accurate positioning of segment bolt holes and shear pin holes, greatly improving construction quality and safety. Furthermore, the device avoids the risk of human error and accidents that may occur during manual adjustment of the torsion angle. 3. The shaft torsion adjustment device is simple to operate and easy to install. Compared with installing an anti-torsion device at the wellhead, this device uses the same construction process as the main cable tensioning, making installation more convenient. When actively adjusting the torsion angle, the operator only needs to increase the corresponding anchor cable tension on the ground. The adjustment is fully automated and easy to operate. 4. The shaft torsion adjustment device is highly adaptable and versatile; it is designed to meet various geological and construction conditions and has excellent adaptability. Whether facing complex geological conditions, narrow working spaces or other challenges, the device can maintain efficient and stable performance. 5. This device can also be used as a backup safety measure for shaft construction; the adjustment rope of this device can share part of the tension of the main rope, and can be used as a temporary safety measure when the main rope is abnormally damaged to avoid a large inclination of the shaft.

[0028] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described in detail here.

Claims

1. A shaft torsion adjustment device for shaft boring machine construction, characterized in that The shaft torsion adjustment device includes a main rope and an adjusting rope, and each of the main rope and the adjusting rope is provided with four ropes, and one end of each of the main rope and the adjusting rope is anchored in the steel rope anchor box of the blade foot ring. The four main ropes are evenly arranged along the outer circumference of the blade foot ring, and each adjusting rope is located at the midpoint of the arc between two adjacent main ropes; the connecting ends of the main rope and the adjusting rope on the blade foot ring are tilted upward, and the horizontal projection direction of the main rope coincides with the diameter direction of the blade foot ring through the connection point, and its vertical component is vertical Perpendicular to the plane of the blade foot ring, the horizontal projection direction of the adjusting cable coincides with the tangent direction of the blade foot ring at the connection point, and its vertical component is perpendicular to the plane of the blade foot ring; the four adjusting cables include two clockwise adjusting cables and two counterclockwise adjusting cables, the two clockwise adjusting cables are symmetrical about the center of the blade foot ring, the two counterclockwise adjusting cables are symmetrical about the center of the blade foot ring, and the adjacent clockwise adjusting cables and counterclockwise adjusting cables are symmetrically arranged about the diameter axis passing through the center of the blade foot ring.

2. A shaft torsion adjustment device for shaft boring machine construction according to claim 1, characterized in that The steel cable anchor box includes a top plate, a bottom plate, an outer arc plate, an inner arc plate, a channel outer plate, a channel inner plate, a fixed plate and a support member. The outer arc side and the inner arc side of the top plate are respectively connected to the outer arc plate and the inner arc plate of the blade foot ring, and the two sides of the fixed plate are respectively connected to the inner arc plate and the outer arc plate of the blade foot ring. The bottom plate is installed on the blade panel of the blade foot ring, and the inner arc side of the inner arc plate is connected to the inner arc plate of the blade foot ring. The inner arc plate is divided into an upper inner arc plate and a lower inner arc plate. The upper end and the lower end of the upper inner arc plate are respectively connected to the top plate and the fixed plate, and the upper end and the lower end of the lower inner arc plate are respectively connected to the fixed plate and the bottom plate. The upper end of the channel outer plate The upper and lower ends of the channel inner plate are connected to the top plate and the fixed plate respectively, the upper and lower ends of the outer arc plate are connected to the channel outer plate and the bottom plate respectively, the side of the support member is connected to the outer arc plate, the upper and lower ends of the support member are connected to the fixed plate and the bottom plate respectively, the outer arc plate of the blade ring and the fixed plate are provided with through holes allowing the main rope or the adjusting rope to pass through, a channel is formed between the channel outer plate and the channel inner plate, the main rope or the adjusting rope is connected to the anchor plate through the through holes of the outer arc plate of the blade ring, the channel and the through holes of the fixed plate in turn.

3. A shaft torsion adjustment device for shaft boring machine construction according to claim 2, characterized in that The channel inner plate is provided with a blade foot ring reinforcement support.

4. A shaft torsion adjustment device for shaft boring machine construction according to claim 2, characterized in that The outer arc plate of the blade foot ring is connected to the blade panel via a connecting plate. A grouting waterstop is provided on the outer side of the outer arc plate of the blade foot ring. The grouting waterstop is located at the upper end of the connecting plate.

5. A shaft torsion adjustment device for shaft boring machine construction according to claim 1, characterized in that The other ends of the main rope and the adjusting rope are both connected to a settlement unit on the ground.

6. A shaft torsion adjustment device for shaft boring machine construction according to claim 1, characterized in that The blade foot ring is evenly provided with shear pin holes or bolt holes along its circumferential direction.

7. A shaft torsion adjustment device for shaft boring machine construction according to claim 1, characterized in that The blade foot ring is evenly provided with pipe segment hoisting holes along its circumference.

8. A method for operating a shaft torsion adjustment device for shaft boring machine construction according to any one of claims 1 to 7, characterized in that The working method comprises the following steps: S1: excavating a foundation pit using a shaft boring machine, and assembling the blade foot ring in the foundation pit; S2: Lower the main cable, the clockwise torsion adjustment cable, and the counterclockwise torsion adjustment cable to the height of the blade foot ring, connect the cables to the blade foot ring through the cable anchor box, and after all the cables are threaded, adjust the tension of the cables on the ground to keep them in a tensioned state; S3: Continue excavating the footage using the shaft boring machine, and install standard rings on the blade foot ring in sequence, while monitoring the torsion angle of the shaft; when clockwise torsion is required, simultaneously increase the tension of the two clockwise adjustment cables or reduce the tension of the two counterclockwise adjustment cables, and adjust the tension of the main cable to maintain the height of the shaft; when counterclockwise torsion is required, simultaneously increase the tension of the two counterclockwise adjustment cables or reduce the tension of the two clockwise adjustment cables, and adjust the tension of the main cable to maintain the height of the shaft.

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