Extra-long-distance super-large-diameter pipe jacking construction method and device

Abstract

The invention provides an ultra-long-distance and ultra-large-diameter pipe jacking construction method and device, and the method comprises the following steps: setting a starting well, and drilling a guide hole in the direction of a receiving well by using a directional drilling machine; a traction well is arranged between the starting well and the receiving well, a traction device is arranged in the traction well, and a traction cable of the traction device penetrates through the guide hole to be connected with the front end of the pipe jacking machine head; in the jacking process, the pipe jacking machine head is connected with a traction pulley block located in a traction well through a traction cable, and the pipe jacking machine head is pulled through the traction cable while the pipe jacking pipe joint is jacked; through the steps, ultra-long-distance and ultra-large-diameter pipe jacking construction is achieved. By adopting the mode of combining head traction with deviation rectification, ultra-long-distance or ultra-large-diameter pipe jacking construction is achieved, through traction, deformation of a W-shaped tunnel structure is reduced, hindrance of a pipe jacking section in the propelling process is greatly reduced, then the jacking force exerted by a jacking oil cylinder on the pipe jacking section is reduced, and the breaking probability of the pipe jacking section is reduced.

Description

Technical Field

[0001] The present invention relates to the field of tunnel construction, and in particular to a method and device for super-long-distance and super-large-diameter jacking pipe construction. Background Art

[0002] Pipe jacking construction is a trenchless pipe laying technology, which is mainly used to lay underground pipelines by hydraulic jacking through obstacles such as roads, railways, and rivers without damaging the surface. The construction process includes the steps of setting up a working shaft, that is, setting up a starting well and a receiving well, and usually the distance between the starting well and the receiving well is no more than 200 meters. It also includes the steps of pilot hole drilling, hole expansion operations, pipe jacking, mud replacement and cleaning. In the actual construction process, hole expansion operations and jacking are carried out simultaneously to avoid collapse of unsupported holes. However, due to the influence of gravity, the pipe jacking sections and pipe jacking machine heads in pipe jacking construction are still prone to tilting downward, and adjustment is more difficult. Chinese patent CN219510270U describes a pipe jacking angle adjustment device for pipe jacking construction. A hydraulic jack is installed at the rear of the pipe jacking machine to adjust the sinking of the machine head. However, the problem is that during actual construction, the outer diameter of the jacking machine's expanded hole must be larger than the outer diameter of the jacking pipe. Relying solely on the hydraulic jack at the rear of the pipe jacking machine makes it difficult to compensate for the sinking problem. This is because there is also a gap between the subsequent supporting second pipe section and the expanded hole. The hydraulic jack is used to adjust the jacking by pulling the jack up, which causes the second pipe section to sink again. This creates a "W"-shaped tunnel structure. As the jacking machine head repeatedly sinks and rises for correction, the tunnel assumes a "W" shape. This "W"-shaped tunnel structure causes the tunnel's axially projected inner diameter to be smaller than the outer diameter of the jacking pipe section, increasing the friction between the tunnel inner wall and the jacking pipe section. This makes it difficult to advance the subsequent jacking pipe section and, in severe cases, even causes the jacking pipe section to frequently break, significantly increasing construction costs. CN116877099A describes a structure and method for quickly adjusting the head sinking of a pipe jacking machine. It describes a method for adjusting the head sinking by installing an oblique support assembly in front of the machine head. However, this solution results in over-excavation, meaning that the location where the oblique support assembly is installed requires pouring more concrete to compensate. This significantly increases construction costs. Furthermore, since the machine head is rotating, the oblique support assembly interferes with the rotating machine head. Existing pipe jacking machines typically have a diameter of 1.5 meters. This makes it difficult for construction workers to navigate within the pipe jacking, and pipe sections with a diameter exceeding 1.5 meters are even more difficult to construct, making the pipe jacking machine's head sinking problem even more serious. For example, in a certain underground sewage pipe network reconstruction project, the inner diameter of the pipe jacking section is 2.5 meters. Furthermore, within the 200-meter range between the starting well and the receiving well, a major road must be crossed. Even with the installation of an intermediate jacking device, the distance between the starting well and the receiving well is unlikely to exceed 300 meters, resulting in frequent breakage of the pipe jacking sections during construction. How to increase the construction length between jacking shafts and reduce the breakage rate of jacking pipe sections is a technical problem in this field. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method and device for ultra-long distance and ultra-large diameter jacking pipe construction, which can overcome the problem of sinking of the head of the machine, increase the distance of jacking pipe construction, reduce the construction difficulty of ultra-large diameter jacking pipe, and reduce the breakage rate of jacking pipe sections.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a super-long distance and super-large diameter pipe jacking construction method, comprising the following steps: S01. Set up the launching well and drill a pilot hole in the direction of the receiving well using a directional drill; S02. A traction well is set between the starting well and the receiving well, a traction device is set in the traction well, and a traction rope of the traction device passes through the guide hole and is connected to the front end of the pipe jacking head; S03. Multiple jacking cylinders are installed in the launch well to jack the pipe sections. S04. During the jacking process, the jacking machine head is connected to the traction pulley block located in the traction shaft via a traction rope. While the jacking pipe section is being jacked, the traction rope pulls the jacking machine head. Through the above steps, ultra-long distance and ultra-large diameter pipe jacking construction can be achieved.

[0005] In a preferred solution, in step S04, the traction pulley group includes a fixed pulley group and a movable pulley group, the wire rope is wound on the fixed pulley group and the movable pulley group, one end of the wire rope is fixed, and the other end is connected to the winch device, and the movable pulley group is connected to the traction rope through an escapement connector.

[0006] A super-long distance and super-large diameter pipe jacking construction method comprises the following steps: S11. Set up a launching well and drill a pilot hole in the direction of the receiving well using a directional drilling rig; S12. A traction well is set between the starting well and the receiving well, a traction device is set in the traction well, and a traction rope of the traction device passes through the guide hole and is connected to the front end of the pipe jacking head; A correction beam is provided at the tail end of the pipe jacking machine head. The correction beam is fixedly connected to the frame of the pipe jacking machine head. A correction device is also provided on the correction beam. The structure of the correction device is as follows: the second clamp seat is connected to the pipe column of the correction beam, and the second clamp seat is connected to the pull ring through a back-pull screw. An adjustable sleeve for adjusting the length of the back-pull screw is provided on the back-pull screw. By rotating the adjustable sleeve, the length of the entire back-pull screw can be adjusted to achieve active correction of the pipe jacking machine head. The pull ring is fixed on the inner wall of a reaction ring, and the outer diameter of the reaction ring is substantially the same as the inner diameter of the jacking pipe segment; or the pull ring is pre-buried in the inner wall of the jacking pipe segment; S13. A jacking cylinder is installed in the starting well. The jacking cylinder is fixed on the jacking support seat. As the jacking machine head advances, the jacking cylinder pushes the jacking pipe section. S14. During the jacking process, the jacking machine head is connected to the traction pulley block located in the traction well through the rotary tractor and the traction rope to traction the jacking machine head; Through the above steps, ultra-long distance and ultra-large diameter pipe jacking construction can be achieved.

[0007] Preferably, in step S14, the traction pulley group includes a fixed pulley group and a movable pulley group, the wire rope is wound on the fixed pulley group and the movable pulley group, one end of the wire rope is fixed, and the other end is connected to the winch device, and the movable pulley group is connected to the traction rope through an escapement connector.

[0008] Preferably, in step 11, a set of blades located in the middle of the pipe jacking machine head is removed, and a traction cable is connected to the cross pin, wherein one end of the traction cable is provided with a ring, and the ring is sleeved with the cross pin; The traction cable is connected to the rotary tractor, and the rotary tractor is connected to the traction cable.

[0009] Preferably, a traction fixing device is further provided on the deviation-correcting beam; The traction fixing device includes a plurality of first hoop seats, a swing rod and a top shoe arranged along the circumference; the first hoop seat is connected to the deviation correction beam, the swing rod is hinged to the first hoop seat, and the free end of the swing rod is hinged to the top shoe; There are multiple traction and fixing devices on the circumference, which is an integer multiple of the number of pipe columns of the correction beam. The two first clamp seats are respectively connected to a swing rod, and the free ends of the two swing rods are hinged to the same jacking shoe, thus forming a quadrilateral structure. The quadrilateral structure is inclined toward the direction of the jacking machine head. When traction is applied, the quadrilateral structure tends to open, thereby supporting the tail section of the jacking machine and improving traction. The traction fixing device is arranged at different positions of the correction beam as required, so that the top shoe of the traction fixing device presses against the inner wall of the tail section of the pipe jacking machine or the inner wall of the pipe jacking section.

[0010] Preferably, a plurality of rollers are provided near the outer wall of the reaction ring, and the rollers are in contact with the inner wall of the jacking pipe section so that the reaction ring can move along with the jacking pipe section; Temporary buttresses are also provided, the bottom ends of which are supported on the inner wall of the jacking pipe section.

[0011] A device for the above-mentioned ultra-long-distance and ultra-large-diameter pipe jacking construction method, comprising a plurality of feed and deviation-correcting cylinders provided between the pipe jacking machine head and the pipe jacking machine tail section, and a traction device connected to the pipe jacking machine head via a rotary tractor, the traction device comprising a traction pulley block provided in a traction well; The structure of the rotary tractor is as follows: the first rotating block is fixedly connected to the second rotating block, one end of the traction cable is provided with a traction step, and the traction step is located in a countersunk hole on the end surface of the second rotating block facing the first rotating block; The other end of the traction cable is fixedly connected to the pipe jacking machine head. A countersunk hole is provided in the end face of the first rotating block facing the second rotating block. A thrust bearing is provided in the countersunk hole. The traction cable passes through the thrust bearing and is fixedly connected to the thrust bearing through the enlarged head at the end head, so that the traction cable can realize the function of pulling the pipe jacking machine head, and the traction cable will not rotate with the rotation of the pipe jacking machine head.

[0012] Preferably, the traction rope passes through the escapement connector and is unidirectionally locked by the escapement connector, the escapement connector is connected to the movable pulley block of the traction pulley block, and is further provided with a winch mechanism, which is used to tighten or loosen the wire rope of the traction pulley block; A traction rope winder is installed near the escapement connector. The winder adopts the structure of a winch. The end of the excess traction rope is wound on the winder. As the traction travels, the winder winds up the excess traction rope.

[0013] Preferably, the escapement connector includes a bisected cylindrical structure, the two halves of the cylindrical structure being connected by screws and screw holes, and a pawl being provided in the cylindrical structure. When the traction rope passes through the cylindrical structure, the pawl, under the action of a spring, allows the traction rope to pass in only one direction, that is, when the traction pulley assembly is tightened, the pawl locks the traction rope.

[0014] Preferably, the escapement connector comprises a bisected cylindrical structure, wherein a compression tile is provided in the bisected cylindrical structure, the compression tile presses on the surface of the traction rope and is locked by a fastening screw arranged along the radial direction.

[0015] Preferably, a deflection correction beam is further provided, the deflection correction beam adopts a truss beam structure, one end of the deflection correction beam is fixedly connected to the pipe jacking machine head, and a traction fixing device is provided on the deflection correction beam; The structure of the traction fixing device includes a plurality of first clamping seats, a rocker rod and a top shoe arranged along the circumference; The first clamp seat is fixedly connected to the pipe column of the deviation-correcting beam, and the two first clamp seats are respectively connected to a swing rod, and the free ends of the two swing rods are hinged to the same top shoe; This forms a quadrilateral structure that tilts toward the pipe jacking machine head. When pulling, the quadrilateral structure tends to open, thereby supporting the tail section of the pipe jacking machine to help improve the pulling force; The number of the traction fixing device corresponds to the number of pipe columns of the correction beam, that is, it is an integer multiple of the number of pipe columns.

[0016] Preferably, a correction device is provided to actively correct the problem of the pipe jacking machine head sinking; The structure of the correction device is: the second clamp seat is connected to the pipe column of the correction beam, the second clamp seat is connected to the pull ring through the back-pull screw, and an adjustable sleeve for adjusting the length of the back-pull screw is provided on the back-pull screw. The length of the entire back-pull screw can be adjusted by rotating the adjustable sleeve, thereby realizing active correction of the jacking machine head.

[0017] Preferably, the pull ring is fixed to the inner wall of a reaction ring, the outer diameter of the reaction ring is substantially the same as the inner diameter of the jacking pipe segment, and a plurality of rollers are provided near the outer wall of the reaction ring, the rollers contacting the inner wall of the jacking pipe segment so that the reaction ring can move with the jacking pipe segment; Alternatively, the pull ring is pre-buried in the inner wall of the jacking pipe segment.

[0018] Preferably, the second clamp seat at the top is connected to the pull ring near the bottom, and the second clamp seat at the bottom is connected to the pull ring near the top.

[0019] The present invention provides a method and device for super-long distance and super-large diameter jacking construction. By adopting a head traction combined with deviation correction, super-long distance or super-large diameter jacking construction is achieved. By pulling the jacking machine head, the jacking machine tail section or the jacking pipe section, the deformation of the "W"-shaped tunnel structure is reduced, the obstruction of the jacking pipe section during the advancement process is greatly reduced, and the friction of the "W"-shaped tunnel structure on the jacking pipe is reduced, thereby reducing the jacking force applied by the jacking cylinder to the jacking pipe section, and reducing the probability of the jacking pipe section being broken. In combination with the solution of the deviation correction beam of the present invention to correct the deviation of the machine head, the fulcrum is located at the rear of the jacking pipe section, reducing the downward pressure of the deviation correction operation on the head jacking pipe section, reducing the influencing factors of the "W"-shaped tunnel structure, and solving the technical problem of the machine head sinking during the jacking construction process, as well as the new technical problems caused by the deviation correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a stereoscopic view of the traction and deviation-correcting connection state of the pipe jacking machine head of the present invention.

[0022] Figure 3 It is a front view of the traction and deviation-correcting connection state of the pipe jacking machine head of the present invention.

[0023] Figure 4 for Figure 3 AA cross-sectional view of .

[0024] Figure 5 for Figure 3 BB cross-sectional diagram.

[0025] Figure 6It is a schematic front view of the pushing and pulling positions of the present invention.

[0026] Figure 7 It is a cross-sectional schematic diagram of the rotary tractor of the present invention.

[0027] Figure 8 It is a half-section schematic diagram of the escapement connector of the present invention.

[0028] Figure 9 It is a half-section schematic diagram of another optional solution of the escapement connector of the present invention.

[0029] In the figure: traction rope 1, ground 2, traction fixing device 3, top shoe 31, rocker 32, first clamp seat 33, correction device 4, counter-pull screw 41, reaction ring 42, roller 43, pull ring 44, adjustable sleeve 45, second clamp seat 46, guide hole 5, pipe jacking machine head 6, feed correction cylinder 7, pipe jacking machine tail section 8, rotary tractor 9, first rotating block 91, thrust bearing 92, second rotating block 93, Traction platform 94, traction cable 95, expansion head 96, correction beam 10, pipe string 101, chord 102, jacking pipe section 11, starting well 12, jacking cylinder 13, jacking support seat 14, traction well 15, reaction frame 16, traction pulley block 17, escapement connector 18, pawl 181, screw hole 182, pressing plate 183, screw 184, traction cable winder 19, temporary pier 20. DETAILED DESCRIPTION

[0030] Regarding the description of the drawings in this specification, the inventors have simplified them for ease of viewing, showing only the structures relevant to the present invention so that the reader can clearly understand the technical solution of the present invention. Omitted portions, unless otherwise specified, represent structures in the prior art. This specification also focuses solely on the technical problems and solutions of the present invention; any portions not described represent structures in the prior art.

[0031] The inventors' analysis shows that during pipe jacking, the resistance generated by the jacking head accounts for over 30% of the total jacking force. The sinking of the jacking head is one of the main causes of increased friction. After applying a traction force to the jacking head, finite element analysis results show that applying a small amount of traction, approximately 10% of the jacking force, reduces the maximum jacking force required for pipe jacking by approximately 32.5%, meaning the overall output is reduced by approximately 22.5%. Furthermore, with the reduction in maximum jacking force, the probability of breakage of the jacking pipe section 11 can be significantly reduced.

[0032] Example 1: like Figure 1 As shown in , a super-long distance and super-large diameter pipe jacking construction method includes the following steps: S01. Set up a starting well 12, and use a directional drilling rig to drill a guide hole 5 in the direction of the receiving well. The preferred diameter of the guide hole 5 is 10~20cm. The directional drilling rig has a correction function. During the drilling process, sensors, straightening rings and survey holes are used to assist in controlling the deflection of the drill pipe. Among them, the sensors can be accelerometers, gyroscopes and magnetometers. In this example, due to the short distance, a MEMS gyroscope is used as a correction sensor, and the hole inclination accuracy is controlled to ±0.01°. The straightening ring is a relatively rotatable ring that is sleeved on the rotating rod and between the hole wall to provide support for the rotating rod. The survey hole is a vertical hole set in front of the borehole, usually with a diameter of 10~20cm. The drilling error is controlled by detecting the rotating rod in the vertical hole.

[0033] S02. A traction well 15 is set between the starting well 12 and the receiving well. A traction device is set in the traction well 15. The traction rope 1 of the traction device passes through the guide hole 5 and is connected to the front end of the jacking head 6; The diameter of the traction well 15 is smaller than that of the starting well 12. In this example, the minimum cross-sectional size of the traction well 15 is 1.5 meters × 1.5 meters to meet the traction construction requirements, and the footage of each traction is 30~100 cm.

[0034] If necessary, the traction shaft 15 can also be arranged in the receiving shaft.

[0035] Preferably, a set of blades located in the middle of the pipe jacking head 6 is removed, and the traction cable 95 is connected to the cross pin 21. Preferably, one end of the traction cable 95 is provided with a ring, which is sleeved on the cross pin 21. The other end of the traction cable 95 is provided with a traction step 94, which is used to connect to the rotary tractor 9.

[0036] S03. A plurality of jacking cylinders 13 are arranged in the starting well 12. The jacking cylinders 13 are fixed on the jacking support seat 14. As the jacking head 6 is excavated, the jacking cylinders 13 jack the jacking pipe section 11 directly or through the jacking block, so that the jacking pipe section 11 follows the jacking head 6 to be jacked. After the jacking pipe section 11 has been jacked a sufficient distance, the piston rod of the jacking cylinder 13 is retracted, and a new jacking pipe section 11 is loaded. Then the piston rod of the jacking cylinder 13 is extended to continue jacking.

[0037] S04. During the jacking process, the jacking machine head 6 is connected to the traction pulley group 17 located in the traction shaft 15 through the traction rope 1. The traction pulley group 17 includes a fixed pulley group and a movable pulley group. The wire rope is wound on the fixed pulley group and the movable pulley group. One end of the wire rope is fixed and the other end is connected to the winch device. The movable pulley group is connected to the traction rope 1 through the escapement connector 18.

[0038] The structure of the escapement connector 18 is as follows Figure 8As shown in the figure, the escapement connector 18 includes a tubular structure. The outer wall of the tubular body is connected to the movable pulley group via a connecting rod. The traction rope 1 passes through the tubular body. A pawl 181 is provided on the inner wall of the tubular body. The pawl 181 locks the traction rope 1 in one direction and releases the traction rope 1 in the other direction. This is achieved by a spring installed on the pawl 181, which is not shown in the figure. That is, in the present invention, when the escapement connector 18 is pulled back, the pawl 181 locks the traction rope 1, completing the traction action. After pulling back a certain distance, the winch device connects and releases the movable pulley group, and the escapement connector 18 is manually moved forward along the traction rope 1. Figure 6 As shown in FIG, the escapement connector 18 is moved to Figure 6 The pawl 181 at this time loosens the traction rope 1 and moves forward a distance along the traction rope 1. When the winch device is pulled back again, the pawl 181 locks the traction rope 1, and the next traction operation can be started.

[0039] Another option is Figure 9 As shown in , the escapement connector 18 includes a tubular body with a tubular structure. The outer wall of the tube body is connected to the movable pulley group through a connecting rod. The traction rope 1 passes through the tube body. An arc-shaped compression piece 183 is provided in the tube body. A plurality of screws along the radial direction pass through the screw holes on the outer wall of the tube body. The ends of the screws are in contact with the compression piece 183 to press the compression piece 183 against the traction rope 1. When pulling back, tighten the screws, and the compression piece 183 presses and locks the traction rope 1 to complete the traction action. After pulling back a certain distance, the winch device releases the movable pulley group, loosens the screws, and the escapement connector 18 releases the traction rope 1. The escapement connector 18 is manually moved forward along the traction rope 1, and the screws are tightened again to start the next section of traction operation.

[0040] The preferred solution is Figure 8 、 9 As shown in FIG, the escapement connector 18 has a bisected tube structure, with the two halves of the tube connected by screws to facilitate the passage of the traction cable 1.

[0041] like Figure 6 As shown in FIG, a traction rope winder 19 is fixedly provided near the escapement connector 18. The traction rope winder 19 adopts the structure of a winch. The redundant traction rope 1 is wound on the traction rope winder 19.

[0042] like Figure 6 As shown in FIG, the winch device reels the wire rope, and the movable pulley group drives the escapement connector 18 to Figure 6 The left side movement in the jacking machine pulls the jacking machine head 6; while pulling, it also has the effect of guiding the jacking machine head 6 to lift upward and reduce the sinking of the jacking machine head.

[0043] Through the above steps, ultra-long distance and ultra-large diameter pipe jacking construction can be achieved.

[0044] Example 2: On the basis of Example 1, S11, a starting well 12 is set, and a pilot hole 5 is drilled in the direction of the receiving well by a directional drill rig. The preferred diameter of the pilot hole 5 is 10-20 cm. During the drilling process, the deflection of the drill pipe is controlled by sensors, a straightening ring and a survey hole.

[0045] S12, setting a traction well 15 between the starting well 12 and the receiving well, setting a traction device in the traction well 15, and connecting the traction rope 1 of the traction device to the front end of the pipe jacking head 6 through the guide hole 5; As an optional solution, the traction well 15 can also be directly set in the receiving well.

[0046] Remove the set of blades located in the middle of the pipe jacking head 6 and connect the traction cable 95 to the cross pin 21. Preferably, one end of the traction cable 95 is provided with a ring, which is sleeved on the cross pin 21. The other end of the traction cable 95 is provided with a traction step 94, which is used to connect to the rotary tractor 9.

[0047] Further preferred Figures 1-3 In the embodiment, a correction beam 10 is provided at the tail of the jacking head 6, and the correction beam 10 is fixedly connected to the frame of the jacking head 6. The correction beam 10 adopts a truss beam structure, including a pipe column arranged along the axial direction and a chord rod arranged between the pipe columns, such as Figure 3 As shown in , a traction fixing device 3 is further provided to improve the traction effect. Preferably, the number of the pipe columns of the deviation-correcting beam 10 is 4. In some cases, it is also feasible to set the number of the pipe columns to 3.

[0048] Preferably, Figure 3 、 4 In the figure, the traction and fixing device 3 includes a plurality of first clamping seats 33 arranged along a circumference, a rocker arm 32, and a top shoe 31. The first clamping seats 33 are connected in a bisected manner, with the two halves of the first clamping seats 33 connected by bolts, or optionally by a pin and bolts, similar to the connectors on a scaffold. The first clamping seats 33 are connected to the correction beam 10. Specifically, the correction beam 10 is provided with a plurality of pipe columns 101 arranged along a circumference. The axes of the pipe columns 101 are parallel to the axis of the jacking pipe section 11, and chords are provided between the pipe columns 101. The first clamping seats 33 are fixedly connected to the pipe columns 101 of the correction beam 10. The rocker arm 32 is hinged to the first clamping seats 33, and the free end of the rocker arm 32 is hinged to the top shoe 31. The top shoe 31 is used to support the inner wall of the jacking pipe section 11. The top shoe 31 has a relatively wide curved outer wall, and the curved structure is adapted to the curvature of the inner wall of the jacking pipe section 11. The arc outer wall is provided with a structure that increases friction, and in this example, a rubber sheet is adopted. At the inwall of the top shoe 31, near the position at both ends, the back side of the top shoe 31 is provided with a hinge seat, which is hinged to the free ends of two swing arms 32.

[0049] There are 4 to 8 traction and fixing devices 3 arranged around the circumference, corresponding to the number of pipe columns 101 on the correction beam 10, that is, 1 to 2 times the number of pipe columns 101. In this example, there are four pipe columns 101, and correspondingly, there are four traction and fixing devices 3. In each traction and fixing device 3, there are two first clamping seats 33, arranged along the axial direction of the pipe column 101. The two first clamping seats 33 are respectively connected to a rocker 32, and the free ends of the two rocker 32 are hinged to the same top shoe 31. This forms a quadrilateral structure that tilts toward the pipe jacking machine head 6. When pulling, the quadrilateral structure tends to open, thereby supporting the pipe jacking machine tail section 8 and increasing the pulling force. When the traction rope 1 pulls the pipe jacking machine head 6, the reaction force provided by the traction and fixing device 3 to the pipe jacking machine head 6 helps to reduce the degree of sinking of the head of the pipe jacking machine head 6. The traction and fixation device 3 typically rests against the inner wall of the pipe jacking machine tail section 8 or the pipe jacking section 11, near the front end. The front end refers to the end closest to the jacking direction. Specifically, depending on the situation, the traction and fixation device 3 can be positioned at different locations on the correction beam 10, so that the boot 31 of the traction and fixation device 3 rests against the inner wall of the pipe jacking machine tail section 8 or the inner wall of the pipe jacking section 11. The traction and fixation device 3 helps further reduce the tendency of the pipe jacking machine head 6 or the head of the pipe jacking section 11 to sink.

[0050] A further preferred solution is Figure 3 、 4 In the embodiment, a deviation correction device 4 is also provided to further correct the problem of the pipe jacking machine head 6 sinking.

[0051] Further preferably, the structure of the correction device 4 is as follows Figure 3 、 5 As shown in . The second clamp seat 46 is connected to the pipe column 101 of the correction beam 10. The second clamp seat 46 adopts a bisected connection method. The two halves of the second clamp seat 46 are connected by bolts, and optionally connected by pins and bolts, similar to the connectors of a scaffold. The second clamp seat 46 is connected to the pull ring 44 through a counter-pull screw 41. An adjustable sleeve 45 for adjusting the length of the counter-pull screw 41 is provided on the counter-pull screw 41; the counter-pull screw 41 is composed of two screws, the ends of which are threadedly connected by an adjustable sleeve 45. The threads of the two screws rotate in opposite directions. The inner wall of the adjustable sleeve 45 is provided with an adaptive internal thread. By rotating the adjustable sleeve 45, the length of the entire counter-pull screw 41 can be adjusted, thereby realizing active correction of the pipe jacking head 6.

[0052] Preferred as Figure 5In the embodiment, a pull ring 44 is fixed on the inner wall of a reaction ring 42, and the outer diameter of the reaction ring 42 is roughly the same as the inner diameter of the jacking pipe section 11. A plurality of rollers 43 are provided near the outer wall of the reaction ring 42, and the rollers 43 are in contact with the inner wall of the jacking pipe section 11 and can roll along the axis of the jacking pipe section 11. A plurality of counter-pull screws 41 are provided along the circumference, and the number of counter-pull screws 41 corresponds to the number of pipe columns 101. In this example, the number of pipe columns 101 is 4, and the number of counter-pull screws 41 is 4 to 8. The set reaction ring 42 can withstand a large tensile force to avoid excessive tensile stress damaging the jacking pipe section 11. The reaction ring 42 can move with the jacking pipe section 11 to solve the problem of asynchronous feeding movement of the jacking pipe section 11 and the jacking machine head 6.

[0053] In another optional solution, the pull ring 44 can also be pre-buried in the inner wall of the jacking pipe section 11.

[0054] like Figure 1 、 3 In the example, a temporary buttress 20 is installed in the middle of the correcting beam 10. The bottom end of the temporary buttress 20 is supported on the inner wall of the jacking pipe section 11, and the top end is supported in the middle of the correcting beam 10. This provides a reaction force for the correcting beam 10. The temporary buttress 20 is usually installed on the inner wall of the jacking pipe section 11 near the bottom and can be adjusted to different positions as needed, thus avoiding the formation of a "W"-shaped tunnel structure.

[0055] Adjusting the length of the back-pull screw 41 precisely adjusts the amount of head subsidence of the jacking machine head 6. Ingeniously, the temporary support 20 is positioned between the jacking machine tail section 8 and the jacking section 11, either on the jacking machine tail section 8 or on the jacking section 11. This prevents the head of the first ring jacking section 11 from sinking, thus preventing the formation of a "W"-shaped tunnel structure.

[0056] Preferred Figure 5 In the embodiment, the second clamp seat 46 at the top is connected to the pull ring 44 near the bottom, while the second clamp seat 46 at the bottom is connected to the pull ring 44 near the top. With this structure, the chord 102 of the correcting beam 10 is mainly subjected to compressive stress rather than tensile stress, thereby preventing the chord of the correcting beam 10 from being desoldered.

[0057] S13, such as Figure 6 In the process, a jacking oil cylinder 13 is set in the starting well 12, and the jacking oil cylinder 13 is fixed on the jacking support seat 14. As the jacking head 6 advances, the jacking oil cylinder 13 pushes the jacking pipe section 11 and follows the jacking of the jacking head 6.

[0058] S14. During the jacking process, the jacking machine head 6 is connected to the traction pulley block 17 located in the traction well 15 through the rotary tractor 9 and the traction rope 1 to traction the jacking machine head 6; Preferably, during the construction process, the excavation direction is corrected using a total station or laser beam. Laser beam correction involves placing a target and a laser beam emitter on the jacking head 6 and the subsequent jacking pipe section 11, respectively, and correcting the jacking head 6 based on the position of the laser beam falling on the target.

[0059] Through the above steps, the super-long distance and super-large diameter pipe jacking construction is achieved, and during the construction process, the sinking error of the pipe jacking machine head 6 is less than 1 cm. In a certain project, the 1.8-meter inner diameter pipe jacking section 11 and the super-long distance of 330 meters of pipe jacking construction were achieved. In another project, the 2.5-meter inner diameter pipe jacking section 11 and the super-large diameter pipe jacking construction of 200 meters were achieved. The above projects are all equipped with intermediate jacking devices. The intermediate jacking device refers to a group of jacking cylinders 13 arranged between the jacking pipe sections, which are used for segmented jacking to reduce the length of a single jacking.

[0060] Example 3: like Figure 1 In the embodiment, a plurality of feed correction cylinders 7 are provided between the pipe jacking machine head 6 and the pipe jacking machine tail section 8. The feed correction cylinders 7 are evenly distributed along the circumference and are used to push the pipe jacking machine head 6 to achieve the feeding of the pipe jacking machine head 6. However, as described in the background art, due to the influence of gravity, the pipe jacking machine head 6 has a countersinking phenomenon, which not only affects the construction accuracy but also greatly increases the friction of the pipe jacking section 11.

[0061] like Figure 1 、 6 In the embodiment, a correction device used in Examples 1 and 2 includes a traction device, which is connected to the jacking head 6 through a rotating traction device 9, and the traction device includes a traction pulley group 17 arranged in a traction well 15.

[0062] like Figure 7 The rotary tractor has the following structure: a first rotating block 91 is fixedly connected to a second rotating block 93, and a traction cable 95 passes through the second rotating block 93 and is fixedly connected to the second rotating block 93. In this example, one end of the traction cable 95 is provided with a traction step 94, which is located in a countersunk hole on the end surface of the second rotating block 93 facing the first rotating block 91. The other end of the traction cable 95 is fixedly connected to the cross pin 21 located on the pipe jacking head 6 through an annular structure. A countersunk hole is provided on the end surface of the first rotating block 91 facing the second rotating block 93, and a thrust bearing 92 is located in the countersunk hole. The traction cable 1 passes through the thrust bearing 92 and is fixedly connected to the thrust bearing 92 via an enlarged head 96 at the end, so that the traction cable 1 can achieve the function of pulling the pipe jacking head 6, and the traction cable 1 does not rotate with the rotation of the pipe jacking head 6.

[0063] Preferred as Figure 6In the embodiment, the traction rope 1 is connected to the escapement connector 18. Specifically, the traction rope 1 passes through the escapement connector 18 and is locked in one direction by the escapement connector 18. The escapement connector 18 is connected to the traction pulley group 17. Specifically, the escapement connector 18 is connected to the movable pulley group in the traction pulley group 17. A winch mechanism is also provided, which is used to tighten or loosen the wire rope of the traction pulley group 17. Optional structures such as Figure 8 In the embodiment, the escapement connector 18 comprises a bisected cylindrical structure, the two halves of which are connected by screws and screw holes, and a ratchet 181 is provided in the cylindrical structure. When the traction rope 1 passes through the cylindrical structure, the ratchet 181, under the action of a spring, allows the traction rope 1 to pass only in one direction. That is, when the traction pulley block 17 is tightened, the ratchet 181 locks the traction rope 1. At this time, the traction pulley block 17 pulls the pipe jacking machine head 6 toward Figure 1 and Figure 6 The left side movement, after a certain distance of traction, the traction pulley 17 is released, at this time, the escapement connector 18 moves to the left side. Figure 1 and Figure 6 The right side movement, at this time, the traction cable 1 can pass through the escapement connector 18. Another optional solution is as follows Figure 9 In the embodiment, a compression tile 183 is provided in the bisected cylinder, which is pressed against the surface of the traction rope 1 and locked by a radially arranged tightening screw 184. This structure requires manual operation of the escapement connector 18 at each traction stroke.

[0064] A traction rope winder 19 is fixedly provided near the escapement connector 18. The traction rope winder 19 adopts the structure of a winch. The end of the redundant traction rope 1 is wound on the traction rope winder 19. As the traction travels, the traction rope winder 19 winds up the redundant traction rope 1.

[0065] The preferred solution is Figures 1-3 In the middle, a correction beam 10 is also provided. The correction beam 10 adopts a truss beam structure. One end of the correction beam 10 is fixedly connected to the jacking machine head 6. A traction fixing device 3 is also provided on the correction beam 10.

[0066] like Figure 3 、 4In the figure, the traction and fixing device 3 comprises a plurality of first clamping blocks 33 arranged along a circumference, a rocker arm 32, and a top shoe 31. The first clamping blocks 33 are connected in a bisected manner, with the two halves connected by bolts. Alternatively, a pin and bolt connection can be used, similar to the connectors on a scaffold. The first clamping blocks 33 are connected to the correcting beam 10. Specifically, the correcting beam 10 is provided with a plurality of pipe columns 101 arranged along a circumference. The axes of the pipe columns 101 are parallel to the axis of the jacking pipe section 11, and chords are provided between the pipe columns 101. The first clamping blocks 33 are fixedly connected to the pipe columns 101 of the correcting beam 10. The rocker arm 32 is hingedly connected to the first clamping blocks 33, and the free end of the rocker arm 32 is hingedly connected to the top shoe 31. The top shoe 31 is used to abut the inner wall of the jacking pipe section 11. The top shoe 31 has a wider curved outer wall than the rocker arm 32, and the curved structure adapts to the curvature of the inner wall of the jacking pipe section 11. The arc outer wall is provided with a structure that increases friction, and in this example, a rubber sheet is adopted. At the inwall of the top shoe 31, near the position at both ends, the back side of the top shoe 31 is provided with a hinge seat, which is hinged to the free ends of two swing arms 32.

[0067] like Figures 3 and 4 In the embodiment, 4 to 8 traction and fixing devices 3 are provided around the circumference, corresponding to the number of pipe columns 101 on the correction beam 10, that is, 1 to 2 times the number of pipe columns 101. In this example, there are four pipe columns 101, and correspondingly, there are four traction and fixing devices 3. In each traction and fixing device 3, two first clamping seats 33 are provided, arranged along the axial direction of the pipe column 101. The two first clamping seats 33 are respectively connected to a rocker 32, and the free ends of the two rocker 32 are hinged to the same top shoe 31. This forms a quadrilateral structure that tilts toward the pipe jacking machine head 6. When pulling, the quadrilateral structure tends to open, thereby supporting the pipe jacking machine tail section 8 to help increase the pulling force. When the traction rope 1 pulls the pipe jacking machine head 6, the reaction force provided to the pipe jacking machine head 6 by the traction and fixing device 3 helps to reduce the degree of sinking of the head of the pipe jacking machine head 6. The traction and fixation device 3 typically rests against the inner wall of the pipe jacking machine tail section 8 or the pipe jacking section 11, near the front end. The front end refers to the end closest to the jacking direction. Specifically, depending on the situation, the traction and fixation device 3 can be positioned at different locations on the correction beam 10, so that the boot 31 of the traction and fixation device 3 rests against the inner wall of the pipe jacking machine tail section 8 or the inner wall of the pipe jacking section 11. The traction and fixation device 3 helps further reduce the tendency of the pipe jacking machine head 6 or the head of the pipe jacking section 11 to sink.

[0068] A further preferred solution is Figure 3 、 4 In the embodiment, a deviation correction device 4 is also provided for actively correcting the problem of the pipe jacking machine head 6 sinking.

[0069] Further preferably, the structure of the correction device 4 is as follows Figure 3 、 5As shown in . The second clamp seat 46 is connected to the pipe column 101 of the correction beam 10. The second clamp seat 46 adopts a bisected connection method. The two halves of the second clamp seat 46 are connected by bolts, and optionally connected by pins and bolts, similar to the connectors of a scaffold. The second clamp seat 46 is connected to the pull ring 44 through a counter-pull screw 41. An adjustable sleeve 45 for adjusting the length of the counter-pull screw 41 is provided on the counter-pull screw 41; the counter-pull screw 41 is composed of two screws, the ends of which are threadedly connected by an adjustable sleeve 45. The threads of the two screws rotate in opposite directions. The inner wall of the adjustable sleeve 45 is provided with an adaptive internal thread. By rotating the adjustable sleeve 45, the length of the entire counter-pull screw 41 can be adjusted, thereby realizing active correction of the pipe jacking head 6.

[0070] Preferred as Figure 5 In the embodiment, a pull ring 44 is fixed on the inner wall of a reaction ring 42, and the outer diameter of the reaction ring 42 is roughly the same as the inner diameter of the jacking pipe section 11. A plurality of rollers 43 are provided near the outer wall of the reaction ring 42, and the rollers 43 are in contact with the inner wall of the jacking pipe section 11 and can roll along the axis of the jacking pipe section 11. A plurality of counter-pull screws 41 are provided along the circumference, and the number of counter-pull screws 41 corresponds to the number of pipe columns 101. In this example, the number of pipe columns 101 is 4, and the number of counter-pull screws 41 is 4 to 8. The set reaction ring 42 can withstand a large tensile force to avoid excessive tensile stress damaging the jacking pipe section 11. The reaction ring 42 can move with the jacking pipe section 11 to solve the problem of asynchronous feeding movement of the jacking pipe section 11 and the jacking machine head 6.

[0071] In another optional solution, the pull ring 44 can also be pre-buried in the inner wall of the jacking pipe section 11.

[0072] like Figure 1 、 3 In the middle of the corrective beam 10, a temporary buttress 20 is installed. The bottom end of the temporary buttress 20 is supported on the inner wall of the jacking pipe section 11, and the top end is supported on the middle of the corrective beam 10. This provides a reaction force for the corrective beam 10. The temporary buttress 20 is usually installed on the inner wall of the jacking pipe section 11 near the bottom and can be adjusted to different positions as needed, thereby avoiding the formation of a "W"-shaped tunnel structure.

[0073] Adjusting the length of the back-pull screw 41 precisely adjusts the amount of head subsidence of the jacking machine head 6. Ingeniously, the temporary support 20 is positioned between the jacking machine tail section 8 and the jacking section 11, either on the jacking machine tail section 8 or on the jacking section 11. This prevents the head of the first ring jacking section 11 from sinking, thus preventing the formation of a "W"-shaped tunnel structure.

[0074] Preferred as Figure 5In the embodiment, the second clamp seat 46 at the top is connected to the pull ring 44 near the bottom, while the second clamp seat 46 at the bottom is connected to the pull ring 44 near the top. With this structure, the chord 102 of the correcting beam 10 is mainly subjected to compressive stress rather than tensile stress, thereby preventing the chord of the correcting beam 10 from being desoldered.

[0075] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The embodiments and features in the embodiments of this application may be arbitrarily combined with each other unless they conflict. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A method for super-long distance and super-large diameter pipe jacking construction, characterized by The following steps are involved: S01, setting up a launching well (12), and drilling a pilot hole (5) in the direction of a receiving well using a directional drilling rig; S02, setting a traction well (15) between the starting well (12) and the receiving well, setting a traction device in the traction well (15), and connecting a traction rope (1) of the traction device through the guide hole (5) to the front end of the jacking machine head (6); S03, arranging a plurality of jacking oil cylinders (13) in the starting well (12), wherein the jacking oil cylinders (13) are used to jack the jacking pipe section (11); S04. During the jacking process, the jacking machine head (6) is connected to the traction pulley assembly (17) located in the traction well (15) through the traction rope (1). While the jacking pipe section (11) is being jacked, the traction rope (1) pulls the jacking machine head (6); Through the above steps, ultra-long distance and ultra-large diameter pipe jacking construction can be achieved.

2. The method for constructing an ultra-long distance and ultra-large diameter pipe jacking according to claim 1, characterized in that: Step S 04, the traction pulley group (17) includes a fixed pulley group and a movable pulley group, and the wire rope is wound on the fixed pulley group and the movable pulley group. One end of the wire rope is fixed and the other end is connected to the hoisting device. The movable pulley group is connected to the traction rope (1) through the escapement connector (18).

3. A super-long distance and super-large diameter pipe jacking construction method, characterized by The following steps are involved: S11, setting up a launching well (12), and drilling a pilot hole (5) in the direction of the receiving well using a directional drilling rig; S12, setting a traction well (15) between the starting well (12) and the receiving well, setting a traction device in the traction well (15), and connecting a traction rope (1) of the traction device through the guide hole (5) to the front end of the jacking machine head (6); A correction beam (10) is provided at the tail of the pipe jacking machine head (6), the correction beam (10) is fixedly connected to the frame of the pipe jacking machine head (6), and a correction device (4) is also provided on the correction beam (10). The correction device (4) has the following structure: a second hoop seat (46) is connected to the pipe column (101) of the correction beam (10), the second hoop seat (46) is connected to the pull ring (44) through the back-pull screw (41), and an adjustable sleeve (45) for adjusting the length of the back-pull screw (41) is provided on the back-pull screw (41). By rotating the adjustable sleeve (45), the length of the entire back-pull screw (41) can be adjusted, thereby realizing active correction of the pipe jacking machine head (6); The pull ring (44) is fixed on the inner wall of a reaction ring (42), and the outer diameter of the reaction ring (42) is substantially the same as the inner diameter of the jacking pipe section (11); or the pull ring (44) is pre-buried in the inner wall of the jacking pipe section (11); S13, a jacking oil cylinder (13) is provided in the starting well (12), the jacking oil cylinder (13) is fixed on the jacking support seat (14), and as the jacking machine head (6) advances, the jacking oil cylinder (13) jacks the jacking pipe section (11); S14, during the jacking process, the jacking machine head (6) is connected to the traction pulley group (17) located in the traction well (15) through the rotary tractor (9) and the traction rope (1), and the jacking machine head (6) is pulled; Through the above steps, ultra-long distance and ultra-large diameter pipe jacking construction can be achieved.

4. The method for constructing an ultra-long-distance and ultra-large-diameter pipe jacking according to claim 3, wherein: In step S14, the traction pulley group (17) includes a fixed pulley group and a movable pulley group, and the wire rope is wound on the fixed pulley group and the movable pulley group. One end of the wire rope is fixed and the other end is connected to the hoisting device. The movable pulley group is connected to the traction rope (1) through the escapement connector (18).

5. The method for constructing an ultra-long distance and ultra-large diameter pipe jacking according to claim 4, characterized in that: In step 11, a set of blades located in the middle of the jacking machine head (6) is removed, and a traction cable (95) is connected to the cross pin (21), wherein one end of the traction cable (95) is provided with a ring, and the ring is sleeved with the cross pin (21); The traction cable (95) is connected to the rotary tractor (9), and the rotary tractor (9) is connected to the traction cable (1).

6. The method for constructing a super-long distance and super-large diameter pipe jacking according to claim 3, wherein: A traction fixing device (3) is also provided on the deviation correction beam (10); The traction fixing device (3) comprises a plurality of first hoop seats (33), a swing rod (32) and a top shoe (31) arranged along a circumference; the first hoop seat (33) is connected to the deviation-correcting beam (10), the swing rod (32) is hinged to the first hoop seat (33), and the free end of the swing rod (32) is hinged to the top shoe (31); A plurality of traction fixing devices (3) are provided on the circumference, which is an integral multiple of the number of pipe columns (101) of the deviation correction beam (10). The two first clamping seats (33) are respectively connected to a swing rod (32). The free ends of the two swing rods (32) are hinged to the same top shoe (31), thereby forming a quadrilateral structure. The quadrilateral structure is inclined toward the direction of the jacking machine head (6). When traction is performed, the quadrilateral structure tends to open, thereby supporting the jacking machine tail section (8) and improving the traction force. The traction fixing device (3) is arranged at different positions on the deviation correction beam (10) as required, so that the top shoe (31) of the traction fixing device (3) presses against the inner wall of the tail section (8) of the pipe jacking machine, or presses against the inner wall of the pipe jacking section (11).

7. The method for constructing a super-long distance and super-large diameter pipe jacking according to claim 3, wherein: A plurality of rollers (43) are provided near the outer wall of the reaction ring (42), and the rollers (43) are in contact with the inner wall of the jacking pipe section (11), so that the reaction ring (42) can move along with the jacking pipe section (11); A temporary buttress (20) is also provided, and the bottom end of the temporary buttress (20) is supported on the inner wall of the top pipe section (11).

8. A device for the ultra-long distance and ultra-large diameter pipe jacking construction method according to any one of claims 1 to 7, wherein a plurality of feed correction cylinders (7) are provided between the pipe jacking machine head (6) and the pipe jacking machine tail section (8), and wherein: A traction device is also provided, which is connected to the pipe jacking machine head (6) through a rotating traction device (9), and the traction device includes a traction pulley group (17) arranged in the traction well (15); The structure of the rotary tractor is as follows: a first rotating block (91) is fixedly connected to a second rotating block (93); one end of a traction cable (95) is provided with a traction step (94); the traction step (94) is located in a countersunk hole on the end surface of the second rotating block (93) facing the first rotating block (91); The other end of the traction cable (95) is fixedly connected to the pipe jacking machine head (6). A countersunk hole is provided in the end surface of the first rotating block (91) facing the second rotating block (93), and a thrust bearing (92) is provided in the countersunk hole. The traction cable (1) passes through the thrust bearing (92) and is fixedly connected to the thrust bearing (92) through the enlarged head (96) at the end, so that the traction cable (1) can realize the function of traction of the pipe jacking machine head (6), and the traction cable (1) will not rotate with the rotation of the pipe jacking machine head (6).

9. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 8, characterized in that: The traction rope (1) passes through the escapement connector (18) and is locked in one direction by the escapement connector (18). The escapement connector (18) is connected to the movable pulley group of the traction pulley group (17) and is also provided with a winch mechanism. The winch mechanism is used to tighten or loosen the wire rope of the traction pulley group (17); A traction rope reel (19) is fixedly provided near the escapement connector (18). The traction rope reel (19) adopts a winch structure. The end of the excess traction rope (1) is wound on the traction rope reel (19). As the traction travels, the traction rope reel (19) winds up the excess traction rope (1).

10. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 9, characterized in that: The escapement connector (18) includes a bisected cylindrical structure, wherein the two halves of the cylindrical structure are connected by screws and screw holes, and a ratchet (181) is provided in the cylindrical structure. When the traction rope (1) passes through the cylindrical structure, the ratchet (181) is acted upon by a spring so that the traction rope (1) can only pass in one direction. That is, when the traction pulley assembly (17) is tightened, the ratchet (181) locks the traction rope (1).

11. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 9, characterized in that: The escapement connector (18) comprises a bisected cylindrical structure, wherein a compression tile (183) is provided in the bisected cylindrical structure. The compression tile (183) is pressed on the surface of the traction rope (1) and is locked by a fastening screw (184) arranged along the radial direction.

12. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 8, characterized in that: A deflection correction beam (10) is also provided. The deflection correction beam (10) adopts a truss beam structure. One end of the deflection correction beam (10) is fixedly connected to the pipe jacking machine head (6). A traction fixing device (3) is provided on the deflection correction beam (10). The structure of the traction fixing device (3) includes a plurality of first hoop seats (33) arranged along the circumference, a rocker rod (32) and a top shoe (31); The first hoop seat (33) is fixedly connected to the pipe column (101) of the deviation-correcting beam (10), and the two first hoop seats (33) are respectively connected to a swing rod (32), and the free ends of the two swing rods (32) are hinged to the same top shoe (31); Thus, a quadrilateral structure is formed, which is inclined toward the pipe jacking machine head (6). When pulling, the quadrilateral structure tends to open, thereby supporting the pipe jacking machine tail section (8) to help improve the pulling force; The number of the traction fixing device (3) corresponds to the number of the pipe columns (101) of the deviation-correcting beam (10), that is, it is an integer multiple of the number of the pipe columns (101).

13. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 8, characterized in that: A deviation correction device (4) is also provided for actively correcting the problem of sinking of the pipe jacking machine head (6); The structure of the deviation correction device (4) is as follows: the second clamp seat (46) is connected to the pipe column (101) of the deviation correction beam (10), the second clamp seat (46) is connected to the pull ring (44) through the reverse pull screw (41), and an adjustable sleeve (45) for adjusting the length of the reverse pull screw (41) is provided on the reverse pull screw (41). By rotating the adjustable sleeve (45), the length of the entire reverse pull screw (41) can be adjusted, thereby realizing active deviation correction of the jacking machine head (6).

14. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 13, characterized in that: A pull ring (44) is fixed on the inner wall of a reaction ring (42), the outer diameter of the reaction ring (42) is substantially the same as the inner diameter of the jacking pipe section (11), and a plurality of rollers (43) are provided near the outer wall of the reaction ring (42), the rollers (43) contacting the inner wall of the jacking pipe section (11) so that the reaction ring (42) can move along with the jacking pipe section (11); Alternatively, the pull ring (44) is pre-buried in the inner wall of the top pipe section (11).

15. The device for ultra-long distance and ultra-large diameter pipe jacking construction method according to claim 13, characterized in that: Upper The second hoop seat (46) is connected to the pull ring (44) near the bottom, and the second hoop seat (46) at the bottom is connected to the pull ring (44) near the top.

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