A retreat stop device and construction method capable of bearing the retreat force of a pipe

Abstract

The application relates to the technical field of tunnel construction, in particular to a retreat-stopping device capable of bearing the retreat force of a pipe jacking and a construction method, the retreat-stopping device comprising a working well, a backrest, a pipe joint, a jacking cylinder group, a fixing frame and longitudinal support beams, the backrest is fixedly installed in the interior of the working well, the inner side surface of the pipe joint is provided with a plurality of axially arranged embedded parts, the jacking cylinder group is fixedly installed on the backrest, the fixing frame is detachably connected to the embedded parts in the interior of the pipe joint after jacking, the number of the longitudinal support beams is at least two groups, and the two groups of longitudinal support beams are arranged in parallel and detachably abut between the backrest and the fixing frame. The construction method directly transmits the retreat force generated by the pipe joint to the backrest in an alternating supporting mode, the carrying capacity of the retreat-stopping device is improved, the embedded parts are arranged on the inner side surface of the pipe joint, the retreat-stopping effect is guaranteed, the occupied area of the retreat-stopping frame installation is reduced, and the waterproof performance of the pipe joint is guaranteed.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a backstop device and construction method that can withstand the backsliding force of pipe jacking. Background Technology

[0002] Pipe jacking is a trenchless construction method used when tunnels or underground pipelines cross various obstacles such as railways, roads, rivers, or buildings. During construction, the jacking force of the main jacking cylinder pushes the jacking iron, which in turn propels the pipe jacking machine to cut through the soil in front. The soil is then discharged by a soil removal device, allowing the pipe sections to continuously advance until the jacking section is completed and the tunnel is formed.

[0003] During pipe jacking construction, when adding pipe sections, it is necessary to control the hydraulic jacking to retract and stop the jacking process. In related technologies, to avoid pipe section retraction accidents, embedded parts are pre-installed on the outside of the pipe section, and a backstop frame is installed to prevent retraction. However, when the pipe just emerges from the reinforced zone into the soil layer (the junction of hard and soft soil), the ground load is usually high due to heavy crawler crane operations at this location. The frontal soil pressure is much greater than the sidewall friction resistance, causing the backstop device on the outside of the pipe section to be insufficient to withstand the backlash force, resulting in pipe section retraction. This can easily cause the embedded parts on the sidewall of the pipe section to be pulled out, damaging the concrete. Furthermore, pre-installing embedded parts on the outside of the pipe section can affect its waterproofing performance and increase the footprint required for the backstop frame installation.

[0004] Therefore, how to improve the load-bearing capacity of the anti-reverse device, reduce the floor space occupied by the anti-reverse frame while ensuring the anti-reverse effect, and ensure the waterproof performance of the pipe section are problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0005] In order to improve the load-bearing capacity of the anti-reverse device, reduce the floor space occupied by the anti-reverse frame while ensuring the anti-reverse effect, and ensure the waterproof performance of the pipe section, this application provides an anti-reverse device and construction method that can withstand the backward force of the jacking pipe.

[0006] The technical solution provided in this application for an anti-retreat device and construction method capable of withstanding the retreat force of pipe jacking is as follows: In a first aspect, a backstop device capable of withstanding the backward force of pipe jacking includes: Working well; A backrest, which is fixedly installed inside the working well; Pipe section, wherein a number of axially arranged embedded parts are provided on the inner side of the pipe section; A jacking cylinder assembly is fixedly installed on the rear backrest and is used to jack multiple pipe sections for construction. A fixing frame, which is detachably connected to an embedded part inside the pipe section after it has been jacked up; The longitudinal support beams are provided in at least two sets, with multiple sets of longitudinal support beams arranged side by side and detachably abutting between the backrest and the fixed frame.

[0007] By adopting the above technical solution, and using two detachably connected parallel longitudinal support beams to alternately support the fixing frame, the backward force generated by the pipe section installed inside the tunnel can be directly transferred to the backrest, improving the load-bearing capacity of the anti-backward device. This can prevent the pipe section installed inside the tunnel from experiencing backward movement. Furthermore, by setting the embedded parts on the inner side of the pipe section, not only is the load-bearing capacity of the anti-backward device improved, but the footprint of the anti-backward frame is also reduced while ensuring the anti-backward effect, and the waterproof performance of the pipe section is also guaranteed.

[0008] Preferably, the fixing frame includes a column, the top of which is detachably connected to the embedded part, and a lower steel beam detachably connected to the bottom of the column. The lower steel beam is detachably connected to the embedded part, and a diagonal brace is detachably connected to the lower steel beam. One end of the diagonal brace away from the lower steel beam is detachably connected to the middle of the column.

[0009] By adopting the above technical solution, the use of columns, lower steel beams, and diagonal braces can not only connect multiple adjacent pipe sections into a whole, but also support the pipe sections through the columns and lower steel beams, further improving the load-bearing capacity of the pipe sections.

[0010] Preferably, the embedded part protrudes from the inner surface of the pipe section and has a threaded hole. An upper end seat is welded to the upper end face of the column. A first mounting hole is provided on the upper end seat. A first limiting plate is welded to the upper end seat outside the first mounting hole. The first limiting plate abuts against the side of the embedded part protruding from the inner surface of the pipe section.

[0011] By adopting the above technical solution, the column can be fixedly installed on the inner side of the pipe section by using the threaded hole and the first mounting hole, and the first limiting plate abuts against the side of the embedded part protruding from the inner surface of the pipe section, which can prevent the bolt from being damaged by shear force during operation. This design effectively ensures the load-bearing capacity and reliability of the column during operation.

[0012] Preferably, a second mounting hole is provided on the lower steel beam corresponding to the threaded hole, and a second limiting plate is welded to the lower steel beam outside the second mounting hole. The second limiting plate abuts against the side of the embedded part that protrudes from the inner surface of the pipe section.

[0013] By adopting the above technical solution, the lower steel beam can be fixedly installed on the inner side of the pipe section by using the threaded hole and the second mounting hole, and the second limiting plate abuts against the side of the embedded part protruding from the inner surface of the pipe section, which can prevent the bolt from being damaged by shear force during operation. This design effectively ensures the load-bearing capacity and reliability of the lower steel beam during operation.

[0014] Preferably, a connecting beam is provided between two adjacent pipe sections, and a third mounting hole is opened on the connecting beam corresponding to the threaded hole. A third limiting plate is welded to the connecting beam outside the third mounting hole, and the third limiting plate abuts against the side of the embedded part that protrudes from the inner surface of the pipe section.

[0015] By adopting the above technical solution, using the threaded hole and the third mounting hole, the connecting beam can be fixedly installed between two adjacent pipe sections by using bolts through the third mounting hole. In this way, all pipe sections can be connected into a whole. At the same time, the third limiting plate abuts against the side of the embedded part protruding from the inner surface of the pipe section, which can prevent the bolt from being damaged by shear force during operation. This design effectively ensures the connection strength between the connecting beam and the two adjacent pipe sections.

[0016] Preferably, the longitudinal support beam includes a first fixed part, a second fixed part, and a rotating part. The first fixed part is detachably connected to the backrest, the rotating part is rotatably connected to the end of the first fixed part away from the backrest, the second fixed part is detachably connected to the column, and the end of the rotating part away from the first fixed part is slidably connected to the end of the second fixed part away from the column.

[0017] By adopting the above technical solution, the rotation of the rotating part can cause the second fixed part and the rotating part to disconnect and connect. After the second fixed part and the rotating part disconnect, the pipe section can quickly enter the installation position through the longitudinal support beam. After the pipe section quickly passes through the longitudinal support beam, it can quickly connect again to ensure that the longitudinal support beam continues to support the fixed frame, thereby improving the efficiency of pipe jacking construction.

[0018] Preferably, the end of the rotating part away from the first fixed part and the end of the second fixed part away from the column are both set as arc surfaces, and the central axis of the arc surface is the rotation center of the rotating part and the first fixed part being rotatably connected.

[0019] By adopting the above technical solution, both the end of the rotating part away from the first fixed part and the end of the second fixed part away from the column are set as arc surfaces. This can ensure that the second fixed part and the rotating part can be disconnected and connected more smoothly during rotation, and the stability between the second fixed part and the rotating part can be ensured by the fit of the arc surfaces during the support process.

[0020] Preferably, a telescopic drive member is hinged to the middle of the first fixed part, and the other end of the telescopic drive member is hinged to the rotating part.

[0021] By adopting the above technical solution, the telescopic drive component can more conveniently drive the rotating part to rotate. During the operation, the telescopic drive component can drive the rotating part to rotate, which can conveniently control the rapid disconnection and connection of the longitudinal support beam, further improving the efficiency of pipe jacking construction.

[0022] Preferably, the telescopic drive component is configured as a hydraulic cylinder.

[0023] By adopting the above technical solution, the telescopic drive component is configured as a hydraulic cylinder. The hydraulic cylinder has the advantages of simple structure, reliable operation and smooth movement during operation.

[0024] Secondly, a method for preventing retreat during pipe jacking that can withstand the retreat force includes the following steps: S1. Use the jacking cylinder assembly to press the first pipe section into the tunnel entrance through the jacking iron and hold it there; S2. Install the fixing bracket on the embedded part of the first pipe section; S3. Install the first set of longitudinal support beams; S4. Retract the jacking cylinder assembly; S5. Hoist the next pipe section to be installed; S6. Lower the pipe section to a position close to the upper part of the first set of longitudinal support beams and hold it there; S7. Pass the second set of longitudinal support beams through the inside of the pipe section and install them between the backrest and the fixed frame; S8. Remove the first longitudinal support beam; S9. Lower the pipe section to the installation position; S10. Use the jacking cylinder assembly to press the pipe section located at the installation position between the tunnel entrance and the jacking iron; S11. Remove the fixing frame and the second longitudinal support beam; S12. Use the jacking cylinder assembly to jack up the pipe section that has entered the installation position; S13. Complete the jacking construction of all pipe sections to be jacked according to the methods of S1-S12.

[0025] By adopting the above technical solution, the pipe section can pass smoothly through the longitudinal support beams and maintain uninterrupted support for the fixed frame during hoisting, thereby improving the load-bearing capacity of the anti-backward device and preventing pipe sections installed inside the tunnel from backing up.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting the embedded parts on the inner side of the pipe section, this application not only reduces the floor space occupied by the anti-reverse bracket installation, but also helps to ensure the waterproof performance of the pipe section; 2. This application utilizes two detachably connected, parallel longitudinal support beams to alternately support the anti-reverse frame, which can directly transfer the backward force generated by the pipe section installed inside the tunnel to the backrest, thereby improving the load-bearing capacity of the anti-reverse device and preventing the pipe section installed inside the tunnel from experiencing a backward reversal accident. 3. By rotating the rotating part, the longitudinal support beam can be quickly disconnected and reconnected, so that the pipe section can quickly pass through the longitudinal support beam. After the pipe section passes through the longitudinal support beam, it can be quickly reconnected to ensure that the longitudinal support beam continues to support the anti-reverse frame, thereby improving the efficiency of pipe jacking construction.

[0027] This application utilizes a telescopic drive component to more conveniently drive the rotating part to rotate. During operation, the telescopic drive component can drive the rotating part to rotate, which can conveniently control the rapid disconnection and connection of the longitudinal support beam, further improving the efficiency of pipe jacking construction. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the assembly state structure of the anti-reverse device of Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the disassembled structure of the anti-reverse device of Embodiment 1 of this application.

[0030] Figure 3 This is a schematic diagram of the internal structure of the anti-reverse device in Embodiment 1 of this application.

[0031] Figure 4 yes Figure 3 Enlarged schematic diagram of Part I of the structure.

[0032] Figure 5 yes Figure 3 Enlarged schematic diagram of Part II of the structure.

[0033] Figure 6 yes Figure 3 Enlarged schematic diagram of Part III of the structure.

[0034] Figure 7 This is a schematic diagram of the assembled structure of the longitudinal support beam in Embodiment 1 of this application.

[0035] Explanation of reference numerals in the attached drawings: 100, working well; 101, reinforced layer; 200, backrest; 400, jacking cylinder assembly; 401, jacking iron; 300, pipe section; 301, embedded part; 500, fixing frame; 600, longitudinal support beam; 501, column; 502, lower steel beam; 503, diagonal brace; 3011, threaded hole; 5011, upper end seat; 5012, first mounting hole; 5014, first... Bolt; 5013, First limiting plate; 5021, Second mounting hole; 5023, Second bolt; 5022, Second limiting plate; 504, Connecting beam; 5041, Third mounting hole; 5043, Third bolt; 5042, Third limiting plate; 601, First fixing part; 602, Second fixing part; 603, Rotating part; 604, Rear end seat; 505, Support seat; 605, Telescopic drive component. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] This application discloses a backstop device and construction method that can withstand the backsliding force of pipe jacking.

[0040] Example 1 Please refer to the attached document as well. Figure 1 and attached Figure 2In one embodiment of this application, a backstop device capable of withstanding the backward force of pipe jacking includes a working shaft 100. The inner wall of the working shaft 100 is provided with a reinforcement layer 101 made of steel reinforcement and concrete. A tunnel entrance is opened on one side surface of the reinforcement layer 101, and a backrest 200 is fixedly installed on the side facing the tunnel entrance. A jacking cylinder assembly 400 is fixedly installed on the backrest 200, and a jacking iron 401 is installed on the jacking cylinder assembly 400. A pipe section 300 is provided between the jacking iron 401 and the tunnel entrance. A plurality of axially arranged embedded parts 301 are provided on the inner side of the pipe section 300. The method of setting the embedded parts 301 on the inner side of the pipe section 300 not only makes it easier to reduce the footprint of the backstop frame while ensuring the backstop effect, but also ensures the waterproof performance of the pipe section.

[0041] Please refer to the attached document as well. Figure 1 and attached Figure 2 In one embodiment of this application, a fixing frame 500 is detachably connected to the embedded part 301, and two sets of longitudinal support beams 600 arranged in parallel at different heights are detachably connected to the fixing frame 500. The end of the longitudinal support beam 600 away from the fixing frame 500 is detachably connected to the backrest 200. By using the two detachably connected parallel longitudinal support beams 600 to alternately support the fixing frame 500, the pipe section 300 can enter the installation position by passing through the longitudinal support beams 600 one after another. It can also directly transmit the backward force generated by the pipe section 300 installed inside the tunnel to the backrest 200, thereby improving the load-bearing capacity of the anti-backward device and preventing the pipe section 300 installed inside the tunnel from backing up.

[0042] Of course, in other embodiments of this application, the number of longitudinal support beams 600 can be set to three or more, as long as alternating support can be achieved. In this embodiment, two sets are preferred, which can improve the convenience of disassembly and assembly while ensuring its load-bearing capacity.

[0043] Please refer to the attached document as well. Figure 2 and attached Figure 3 In one embodiment of this application, the fixing frame 500 includes a column 501. The top of the column 501 is detachably connected to the embedded part 301, and the bottom of the column 501 is detachably connected to a lower steel beam 502. The lower steel beam 502 is detachably connected to the embedded part 301, and a diagonal brace 503 is detachably connected to the lower steel beam 502. One end of the diagonal brace 503 away from the lower steel beam 502 is detachably connected to the middle of the column 501. By using the column 501, the lower steel beam 502, and the diagonal brace 503, not only can multiple adjacent pipe sections 300 be connected into a whole, but the column 501 and the lower steel beam 502 can also support the pipe section 300, further improving the load-bearing capacity of the pipe section 300.

[0044] Please refer to the attached document as well. Figure 3 and attached Figure 4 In one embodiment of this application, the embedded part 301 protrudes from the inner surface of the pipe section 300 and has a threaded hole 3011. The upper end face of the column 501 is welded to an upper end seat 5011. The upper end seat 5011 has a first mounting hole 5012. The first bolt 5014 can be passed through the first mounting hole 5012 to fix the column 501 to the inner side of the pipe section 300 using the threaded hole 3011 and the first mounting hole 5012.

[0045] Please refer to the attached document as well. Figure 3 and attached Figure 4 In one embodiment of this application, a first limiting plate 5013 is welded to the upper end seat 5011 on the outside of the first mounting hole 5012. The first limiting plate 5013 abuts against the side of the embedded part 301 protruding from the inner surface of the pipe section 300. By abutting against the side of the embedded part 301 protruding from the inner surface of the pipe section 300, the first bolt 5014 can be prevented from being damaged by shear force during operation. This design effectively ensures the load-bearing capacity and reliability of the column 501 during operation.

[0046] Please refer to the attached document as well. Figure 3 and attached Figure 5 In one embodiment of this application, a second mounting hole 5021 is provided on the lower steel beam 502 corresponding to the threaded hole 3011. The lower steel beam 502 can be fixedly installed on the inner side of the pipe section 300 by using the threaded hole 3011 and the second mounting hole 5021 through the second mounting hole 5021. A second limiting plate 5022 is welded to the lower steel beam 502 on the outer side of the second mounting hole 5021. The second limiting plate 5022 abuts against the side of the embedded part 301 protruding from the inner surface of the pipe section 300. By abutting the side of the embedded part 301 protruding from the inner surface of the pipe section 300 with the second limiting plate 5022, the bolt can be prevented from being damaged by shear force during operation. This design effectively ensures the load-bearing capacity and reliability of the lower steel beam 502 during operation.

[0047] Please refer to the attached document as well. Figure 3 and attached Figure 6In one embodiment of this application, a connecting beam 504 is provided between two adjacent pipe sections 300. A third mounting hole 5041 is provided on the connecting beam 504 corresponding to the threaded hole 3011. Using the threaded hole 3011 and the third mounting hole 5041, a third bolt 5043 can be passed through the third mounting hole 5041 to fix the connecting beam 504 between the two adjacent pipe sections 300, thus connecting all the pipe sections 300 into a single unit. A third limiting plate 5042 is welded to the connecting beam 504 outside the third mounting hole 5041. The third limiting plate 5042 abuts against the side of the embedded part 301 protruding from the inner surface of the pipe section 300. Simultaneously, the abutment between the third limiting plate 5042 and the side of the embedded part 301 protruding from the inner surface of the pipe section 300 prevents the bolt from being damaged by shear force during operation. This design effectively ensures the connection strength between the connecting beam 504 and the two adjacent pipe sections 300.

[0048] Please refer to the attached document as well. Figure 2 and attached Figure 7 In one embodiment of this application, the longitudinal support beam 600 includes a first fixing part 601, a second fixing part 602, and a rotating part 603. A rear end seat 604 is fixedly installed at one end of the first fixing part 601 near the backrest 200, and the rear end seat 604 is detachably connected to the backrest 200. A support seat 505 is fixedly installed on the side of the column 501 facing the backrest 200. The second fixing part 602 is detachably installed on the support seat 505. The rotating part 603 is rotatably connected to the first fixing part 601, and the second fixing part 602 is slidably connected to the rotating part 603. By rotating the rotating part 603, the longitudinal support beam 600 can be quickly disconnected and reconnected, so that the pipe section 300 can quickly pass through the longitudinal support beam 600. After the pipe section 300 quickly passes through the longitudinal support beam 600, it can be quickly reconnected to ensure that the longitudinal support beam 600 continues to support the fixing frame 500, thereby improving the efficiency of pipe jacking construction.

[0049] Please refer to the attached document as well. Figure 2 and attached Figure 7 In one embodiment of this application, the end of the rotating part 603 away from the first fixed part 601 and the end of the second fixed part 602 away from the column 501 are both set as arc surfaces. The central axis of the arc surface is the rotation center where the rotating part 603 and the first fixed part 601 are rotatably connected. This can ensure that the second fixed part 602 and the rotating part 603 can be more smoothly disconnected and connected during rotation, and can also ensure the stability between the second fixed part 602 and the rotating part 603 through the fit of the arc surface during the support process.

[0050] Please refer to the attached document as well. Figure 2 and attached Figure 7In one embodiment of this application, a telescopic drive member 605 is hinged to the middle of the first fixed part 601. The telescopic drive member 605 is configured as a hydraulic cylinder, and the other end of the telescopic drive member 605 is hinged to the rotating part 603. The telescopic drive member 605 can more conveniently drive the rotating part 603 to rotate. During operation, driving the rotating part 603 to rotate via the telescopic drive member 605 allows for convenient control of the rapid disconnection and connection of the longitudinal support beam 600, further improving the efficiency of pipe jacking construction.

[0051] It is understood that in other embodiments of this application, the telescopic drive 605 can also be configured as an electric actuator, a cylinder or other device capable of telescopic movement. In this embodiment, the telescopic drive 605 is preferably configured as a hydraulic cylinder, which can make full use of the advantages of hydraulic cylinders such as simple structure, reliable operation and smooth movement.

[0052] Example 2 A method for preventing pipe jacking retreat force includes the following steps: S1. Use the jacking cylinder assembly 400 to press the first pipe section 300 into the tunnel entrance through the jacking iron 401 and hold it there; S2. Install the fixing bracket 500 on the embedded part 301 of the first pipe section 300; S3. Install the first set of longitudinal support beams 600; S4, retract the jacking cylinder assembly 400; S5. Hoist the next pipe section to be installed (300mm). S6. Lower pipe section 300 to a position close to the upper part of the first set of longitudinal support beams 600 and hold it there; S7. Pass the second set of longitudinal support beams 600 through the inside of the pipe section 300 and install them between the backrest 200 and the fixing frame 500; S8. Remove the first set of longitudinal support beams 600mm; S9. Lower pipe section 300 to the installation position; S10. Use the jacking cylinder assembly 400 to press the pipe section 300, which is located in the installation position, between the tunnel entrance and the jacking iron 401. S11. Remove the fixing frame 500 and the second longitudinal support beam 600; S12. Use the jacking cylinder assembly 400 to jack up the pipe section 300 that has entered the installation position. S13. Complete the jacking construction of all pipe sections (300) to be jacked according to the methods of S1-S12.

[0053] By adopting the above technical solution, the pipe section 300 can be smoothly supported by the longitudinal support beams 600 during hoisting while maintaining uninterrupted support for the fixed frame 500. This also improves the load-bearing capacity of the anti-backward device, thereby preventing the pipe section 300 installed inside the tunnel from backing up.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A backlash prevention device capable of withstanding the backward force of pipe jacking, characterized in that, include: Working well (100); A backrest (200) is fixedly installed inside the working well (100); Pipe section (300), the inner side of which is provided with a number of axially arranged embedded parts (301); A jacking cylinder assembly (400) is fixedly installed on the backrest (200) and is used to jack up multiple pipe sections (300). A fixing frame (500) is detachably connected to an embedded part (301) inside the pipe section (300) after jacking; The longitudinal support beams (600) are arranged in at least two sets, and the multiple sets of longitudinal support beams (600) are arranged side by side and detachably abut against the backrest (200) and the fixing frame (500); the fixing frame (500) includes a column (501), the top of the column (501) is detachably connected to the embedded part (301), and the bottom of the column (501) is detachably connected to a lower steel beam (502), the lower steel beam (502) is detachably connected to the embedded part (301). The lower steel beam (502) is detachably connected to a diagonal brace (503), and one end of the diagonal brace (503) away from the lower steel beam (502) is detachably connected to the middle of the column (501); the embedded part (301) protrudes from the inner surface of the pipe section (300) and is provided with a threaded hole (3011); an upper end seat (5011) is welded to the upper end face of the column (501), and a first mounting hole (5012) is provided on the upper end seat (5011); the upper end seat (5011) is located at the... A first limiting plate (5013) is welded to the outer side of the first mounting hole (5012), and the first limiting plate (5013) abuts against the side of the embedded part (301) protruding from the inner surface of the pipe section (300); a second mounting hole (5021) is opened on the lower steel beam (502) corresponding to the threaded hole (3011), and a second limiting plate (5022) is welded to the outer side of the second mounting hole (5021) on the lower steel beam (502), and the second limiting plate (502 ... The embedded part (301) protrudes from the side of the inner surface of the pipe section (300); a connecting beam (504) is provided between two adjacent pipe sections (300), and a third mounting hole (5041) is opened on the connecting beam (504) corresponding to the threaded hole (3011). A third limiting plate (5042) is welded to the connecting beam (504) on the outside of the third mounting hole (5041), and the third limiting plate (5042) abuts against the side of the embedded part (301) protruding from the inner surface of the pipe section (300).

2. The anti-reverse device capable of withstanding the reverse force of pipe jacking according to claim 1, characterized in that: The longitudinal support beam (600) includes a first fixing part (601), a second fixing part (602), and a rotating part (603). The first fixing part (601) is detachably connected to the backrest (200). The rotating part (603) is rotatably connected to the end of the first fixing part (601) away from the backrest (200). The second fixing part (602) is detachably connected to the column (501). The end of the rotating part (603) away from the first fixing part (601) is slidably connected to the end of the second fixing part (602) away from the column (501).

3. The anti-reverse device capable of withstanding the reverse force of pipe jacking according to claim 2, characterized in that: The end of the rotating part (603) away from the first fixed part (601) and the end of the second fixed part (602) away from the column (501) are both set as arc surfaces, and the central axis of the arc surface is the rotation center of the rotating part (603) and the first fixed part (601) for rotational connection.

4. The anti-reverse device capable of withstanding the backward force of pipe jacking according to claim 2, characterized in that: The first fixing part (601) is hinged to the middle of a telescopic drive member (605), and the other end of the telescopic drive member (605) is hinged to the rotating part (603).

5. The anti-reverse device capable of withstanding the reverse force of pipe jacking according to claim 4, characterized in that: The telescopic drive component (605) is configured as a hydraulic cylinder.

6. A method for preventing pipe jacking retreat force during construction, characterized in that, The anti-reverse device capable of withstanding the reverse force of pipe jacking as described in any one of claims 1-5 includes the following steps: S1. Use the jacking cylinder assembly (400) to jack and hold a pipe section (300); S2. Install the fixing bracket (500) on the embedded part (301) inside the pipe section (300) after jacking is completed; S3. Install the first set of longitudinal support beams (600); S4. Retract the jacking cylinder assembly (400). S5. Hoist the next pipe section to be installed (300). S6. Lower the pipe section (300) to a position close to the upper part of the first set of longitudinal support beams (600) and hold it there; S7. Pass the second set of longitudinal support beams (600) through the inside of the pipe section (300) and install them between the backrest (200) and the fixing frame (500); S8. Disassemble the first longitudinal support beam (600). S9. Lower the pipe section (300) to the installation position; S10. Use the jacking cylinder assembly (400) to press the pipe section (300) located in the installation position between the tunnel entrance and the jacking iron (401); S11. Remove the fixing frame (500) and the second longitudinal support beam (600); S12. Use the jacking cylinder assembly (400) to jack up the pipe section (300) that has entered the installation position; S13. Complete the jacking construction of all pipe sections (300) to be jacked according to the methods of S1-S12.

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