Reversed sinking well connection well normal operation modification connection high pressure sewage pipe and its construction method

Abstract

The application relates to a normal operation transformation connection of a reverse sinking well connection well to a high-pressure sewage pipeline and a construction method thereof, and the main construction steps include the following steps: (1) reinforcing and protecting the periphery of an old pipeline; (2) constructing a newly-built receiving well by using a reverse construction method; (3) constructing a pipe jacking well and a new pipeline; (4) constructing a traction operation frame; (5) installing a sliding construction platform; (6) constructing a suspension backstay device; (7) installing a cutting stable support; and (8) cutting and blocking connection of the old pipeline. The reverse construction method of first constructing a well bottom structure and then gradually excavating can not only ensure the overall stability of the well body and the accurate butt joint with the pipeline, adapt to the construction environment of limited underground space, but also ensure the continuous normal operation of the original connection well and the high-pressure sewage pipeline in the construction process through segmented construction, local sealing and shunting measures, so that the interruption or leakage risk is eliminated, and the application prospect is wide.

Description

Technical Field

[0001] This invention relates to a method for relocating and connecting a high-pressure sewage pipeline during normal operation of a reverse-construction caisson connection well, and its construction method. It belongs to the field of civil engineering and is applicable to the relocation and connection construction of high-pressure sewage pipelines. Background Technology

[0002] The research background of reverse-construction caisson connection wells mainly stems from the demand for sewage pipe networks in urban infrastructure construction. With the acceleration of urbanization, existing sewage pipe networks face increasing loads and aging problems, urgently requiring renovation and expansion. Traditional connection methods mostly employ the caisson method, which often has a significant impact on the surrounding environment during construction, especially in densely populated urban areas, where construction noise and construction waste negatively affect the quality of life for residents. Therefore, researching more efficient and environmentally friendly connection technologies has become an urgent need for the industry.

[0003] Currently, the technology of reverse-construction caisson connection is gaining increasing attention, especially in applications under complex geological conditions. In recent years, many cities have begun exploring the application of reverse-construction methods when constructing new sewage pipelines, aiming to improve construction efficiency while protecting existing pipelines and buildings. Studies have shown that reverse-construction can effectively reduce the construction footprint, minimize environmental impact, and is relatively quick, thus alleviating some of the pressure on urban sewage treatment. However, despite its strengths in certain aspects, reverse-construction still faces challenges in practical application, including insufficient technological maturity and a lack of construction experience.

[0004] The drawbacks of the traditional caisson method are mainly reflected in several aspects. First, the caisson method can easily damage existing pipelines and buildings during construction, especially in unstable soil conditions, potentially leading to uneven sinking of the caisson and affecting construction safety. Second, the caisson method has a long construction period, requiring the construction of a working platform, which increases construction costs and time. Furthermore, the noise and vibration generated during construction significantly impact the lives of nearby residents, and the construction waste also pollutes the environment. Therefore, there is an urgent need to find more efficient and environmentally friendly alternative technologies to meet the needs of modern urban construction. Summary of the Invention

[0005] The purpose of this invention is to provide a method for relocating and connecting a high-pressure sewage pipeline to a reverse-construction caisson well under normal operation. The reverse construction method, which involves first building the bottom structure of the well and then gradually excavating, not only ensures the overall stability of the well body and the precise connection with the pipeline, adapting to the construction environment with limited underground space, but also ensures the continuous normal operation of the original connection well and the high-pressure sewage pipeline during the construction process through segmented construction, partial closure and diversion measures, eliminating the risk of interruption or leakage.

[0006] The objective of this invention can be achieved through the following solution: The relocation and connection of this reverse-operation caisson to a high-pressure sewage pipeline during normal operation includes a suspension support device, a cutting and stabilizing bracket, a sliding construction platform, and a traction operation frame, wherein:

[0007] The suspension rear support device includes symmetrically arranged upper arc clamping plates and lower arc clamping plates. The two ends of the upper arc clamping plates and lower arc clamping plates are connected by a butt plate. The top of the butt plate is provided with a hole and a telescopic sleeve is installed. The telescopic sleeve is connected to a support rod with a suction cup by a fastening nut.

[0008] The cutting and stabilizing support includes a base, a support arc plate, and an adjusting jack. The base is connected to the support rod through the adjusting jack, and the support arc plate is installed at the top of the support rod.

[0009] The sliding construction platform includes a sliding sleeve fitted on a sliding rod. The bottom of the sliding sleeve is connected to the construction basket via a telescopic rod. The front side of the sliding sleeve is provided with an ear plate.

[0010] The traction operating frame includes a cap beam set on top of the protective pile, an operating platform with a sliding rod installed on the cap beam, and the operating platform is equipped with traction equipment and lifting jacks connected to the lifting ring;

[0011] Furthermore, bolts are inserted into the sockets of the mating plate, and the bolts have sockets at their tops. The lifting eye is detachably connected to the bolts through the sockets.

[0012] Furthermore, the operating platform is equipped with a boom insertion hole and a screw hole. The screw on the crown beam passes through the screw hole and is fixed by screws, and the boom of the lifting jack passes through the boom insertion hole.

[0013] Furthermore, protective piles are installed around the old pipeline, and high-pressure jet grouting piles are installed around the newly built receiving well. The adjacent ends of the protective piles and the high-pressure jet grouting piles overlap by 15-20cm.

[0014] The object of the present invention is also achieved by the following methods:

[0015] A construction method for relocating and connecting high-pressure sewage pipelines using the above-mentioned reverse-construction caisson connection well during normal operation includes the following steps:

[0016] S1. Construct protective piles around the old pipeline and construct high-pressure jet grouting piles at the location of the new receiving well;

[0017] S2. Construct a receiving well with existing pipe holes using the reverse construction method, and simultaneously break the high-pressure jet grouting piles at the corresponding locations;

[0018] S3. The new pipe is jacked into the receiving well through the pipe jacking well, so that the new pipe is inserted into the new pipe hole of the receiving well;

[0019] S4. Install the traction control frame, place the sliding sleeve on the slide bar, and connect the ear plate to the traction equipment via a wire rope;

[0020] S5. Start the traction equipment to move the sliding construction platform, install the upper and lower arc clamps of the suspension back support device, and fix them with bolts and nuts;

[0021] S6. Adjust the jacks to make the supporting arc plate press tightly against the old pipe, cut the old pipe and then fill it with waterproof foam concrete to seal it, and then hoist the cut old pipe.

[0022] Furthermore, the installation of the suspension rear support device in step S5 includes:

[0023] Adjust the telescopic sleeve so that the suction cup of the support rod abuts against the side wall of the receiving well, and the suction pressure of the suction cup is 0.2-0.5MPa.

[0024] Furthermore, in step S6, the expansion coefficient of the waterproof foam concrete is 1.5-2.5 times, and the grouting pressure is 0.3-0.8 MPa.

[0025] Furthermore, the reverse process in step S2 includes:

[0026] The well wall structure of the receiving well is constructed in sections from the ground down, with each section having a construction depth of no more than 3m and an interval of more than 24 hours between adjacent sections.

[0027] Compared with the prior art, the present invention has the following outstanding advantages and significant effects:

[0028] 1. This invention adopts a reverse construction method that first builds the bottom structure of the well and then excavates it step by step. This method not only ensures the overall stability of the well body and the precise connection with the pipeline, adapting to the construction environment with limited underground space, but also ensures the continuous normal operation of the original connection well and high-pressure sewage pipeline during the construction process through segmented construction, partial closure and diversion measures, eliminating the risk of interruption or leakage.

[0029] 2. The suspension and support device used in this invention employs an integrated design, utilizing a combination of suspension rods and suction cup support to achieve a "suspension before support" construction process. During the suspension and protection phase of the existing pipeline, this device effectively resists external interference, ensuring the stability and safety of the pipeline during construction. After pipeline cutting, the equipment quickly transforms into a pipeline lifting tool, enabling efficient lifting operations. This solution, by optimizing construction procedures and shortening on-site operation processes, not only improves construction efficiency but also considers construction safety and economic benefits, demonstrating significant application value.

[0030] 3. The cutting and stabilizing support of the present invention is ingeniously designed and supports quick assembly, disassembly and flexible adjustment. By integrating an adjustable jack, the support can quickly achieve precise positioning and stable fixation of the old pipeline, thereby ensuring that the pipeline remains stable during the cutting process, effectively preventing safety risks caused by displacement, shortening on-site operation time, and significantly improving the safety and construction efficiency of the cutting operation.

[0031] 4. The integrated scheme of the traction operating frame and the sliding construction platform adopted in this invention enables the efficient movement of the construction basket along the sliding rod through precise control of the traction equipment, facilitating the assembly and disassembly of the suspension support device for each work area. Specifically, the traction equipment drives the sliding sleeve to move smoothly along the fixed sliding rod, thereby achieving precise positioning of the basket; at the same time, the use of the screws on the protective pile cap beam can significantly improve the efficiency of equipment assembly and positioning, thereby optimizing the construction process, shortening the work cycle, and improving the overall construction efficiency. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of the construction of a high-pressure sewage pipeline during the normal operation and relocation of the reverse-construction caisson connection well.

[0033] Figure 2 This is a schematic diagram of the construction plan for the relocation and connection of high-pressure sewage pipelines;

[0034] Figure 3 This is a 3D schematic diagram of the construction of the old pipeline suspension protection system;

[0035] Figure 4 This is a three-dimensional schematic diagram of the bolt structure;

[0036] Figure 5 This is a three-dimensional schematic diagram of the construction of the suspension rear support device;

[0037] Figure 6 This is a three-dimensional schematic diagram of the connection between the suspension support device and the old pipeline;

[0038] Figure 7 This is a 3D schematic diagram of the installation of the sliding construction platform;

[0039] Figure 8 This is a three-dimensional schematic diagram of the cutting and stabilizing support structure;

[0040] Figure 9 This is a 3D schematic diagram of the installation of the lifting jack and boom;

[0041] Figure 10 This is a three-dimensional schematic diagram of the construction of the retaining pile protection for the newly built receiving well;

[0042] Figure 11 This is a 3D schematic diagram of the operating platform;

[0043] Figure 12This is a three-dimensional schematic diagram of the upper arc clamping plate structure;

[0044] Figure 13 This is a three-dimensional schematic diagram of the lower arc clamping plate structure;

[0045] Figure 14 This is a three-dimensional schematic diagram of the sliding construction platform structure.

[0046] In the diagram: 1. High-pressure jet grouting pile; 2. Cutting machine; 3. New receiving well; 4. Steel plate waterstop wall; 5. Protective pile; 6. Old pipeline; 7. Waterproof foam concrete; 8. New pipeline; 9. Pipe jacking well; 10. Old pipeline after cutting; 11. Support rod; 12. Base; 13. Suction cup; 14. Support arc plate; 15. Fastening nut; 16. Telescopic sleeve; 17. Upper arc clamp plate; 18. Butt joint plate; 19. Bolt; 20. Insertion hole; 21. Hanger insertion hole; 22. Old pipeline hole; 3. Telescopic jack; 24. Insertion hole; 25. Lower arc clamp plate; 26. Screw hole; 27. Construction basket; 28. Operating platform; 29. ​​Crown beam; 30. Screw; 31. Screw; 32. Wire rope; 33. Traction device; 34. Ear plate; 35. Sliding sleeve; 36. Lifting jack; 37. Telescopic rod; 38. Pipe jacking reserved hole; 39. New pipe hole; 40. Lifting rod; 41. Sliding rod; 42. Support rod; 43. Adjusting jack; 44. Nut; 45. Lifting ring. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art are within the scope of protection of this application. The construction technical requirements such as steel pipe welding and cutting, rebar cage binding, and concrete pouring in the embodiments of this invention will not be repeated. The focus is on explaining the implementation of this invention. The invention will be further described in detail below with reference to the accompanying drawings and through embodiments. This description is not limited to the following embodiments.

[0048] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, the above terms should not be construed as limitations on this application.

[0049] Example 1

[0050] like Figure 1-14As shown, the relocation and connection of this reverse-construction caisson to the high-pressure sewage pipeline includes: 1. High-pressure jet grouting pile; 2. Cutting machine; 3. New receiving well; 4. Steel plate waterstop wall; 5. Protective pile; 6. Old pipeline; 7. Waterproof foam concrete; 8. New pipeline; 9. Pipe jacking well; 10. Cut old pipeline; 11. Support rod; 12. Base; 13. Suction cup; 14. Support arc plate; 15. Fastening nut; 16. Telescopic sleeve; 17. Upper arc clamp; 18. Butt joint plate; 19. Bolt; 20. Insertion hole; 10. Hanging rod. 21. Insertion hole; 22. Old pipe hole; 23. Telescopic jack; 24. Insertion hole; 25. Lower arc clamp plate; 26. Screw hole; 27. Construction basket; 28. Operating platform; 29. ​​Crown beam; 30. Screw; 31. Wire rope; 32. Traction device; 33. Ear plate; 34. Sliding sleeve; 35. Lifting jack; 36. Telescopic rod; 37. Pipe jacking reserved hole; 38. New pipe hole; 39. Lifting rod; 40. Sliding rod; 41. Support rod; 42. Adjusting jack; 43. Nut; 44. Lifting ring; 45.

[0051] It mainly includes: suspension support device, cutting and stabilizing bracket, sliding construction platform and traction operation frame;

[0052] The suspension back support device is used to stabilize the old pipe 6 and to hoist and transport the cut old pipe 10. It includes: a support rod 11, a suction cup 13, a fastening nut 15, a telescopic sleeve 16, an upper arc clamping plate 17, a connecting plate 18, a bolt 19, and a lower arc clamping plate 25. The upper arc clamping plate 17 and the lower arc clamping plate 25 form the overall frame of the suspension back support device. The two ends of the upper arc clamping plate 17 and the lower arc clamping plate 25 are symmetrically provided with connecting plates 18, and the top end of the connecting plate 18 is symmetrically provided with telescopic sleeves 16. The suction cup 13 is located at the end of the support rod 11. The support rod 11 and the telescopic sleeve 16 are connected by the fastening nut 15. The upper arc clamping plate 17 and the lower arc clamping plate 25 are spliced ​​into a whole at the connecting plate 18 and fixed with bolts 19 and nuts 44.

[0053] In this embodiment, the top of the docking plate 18 is provided with an insertion hole 24. The upper arc clamping plate 17 and the lower arc clamping plate 25 are respectively clamped to the upper and bottom of the old pipeline 6. Then, the bolt 19 passes through the insertion hole 24 of the docking plate 18 of the upper arc clamping plate 17 and the lower arc clamping plate 25 in sequence, and is fixed with a nut 44. The top of the bolt 19 is provided with an insertion hole 20, and the lifting ring 45 passes through the insertion hole 20 and is connected to the bolt 19. Protective piles 5 are provided around the old pipeline 6, and high-pressure jet grouting piles 1 are provided around the newly built receiving well 3. The newly built receiving well 3 encloses the old pipeline 6.

[0054] The cutting and stabilizing support is used to stabilize the old pipe 6 during cutting. It includes: a base 12, a supporting arc plate 14, a supporting rod 42, and an adjusting jack 43. The base 12 is located on the top of the bottom plate of the newly built receiving well 3. The top of the base 12 is evenly provided with adjusting jacks 43. The adjusting jacks 43 are connected to the supporting rod 42. The top of the supporting rod 42 is provided with a supporting arc plate 14.

[0055] The sliding construction platform is used to install the suspension support device, cut the stable support, and cut the old pipe 6 by the cutting machine 2. It includes: telescopic jack 23, construction basket 27, ear plate 34, sliding sleeve 35, and telescopic rod 37. The sliding sleeve 35 is fitted on the sliding rod 41. The top of the construction basket 27 is equipped with telescopic jack 23, which is connected to the telescopic rod 37. The top of the telescopic rod 37 is connected to the center of the bottom of the sliding sleeve 35. The ear plate 34 is provided on the front of the inner side of the sliding sleeve 35.

[0056] The traction operating frame, used to fix the suspension support device and traction the sliding construction platform forward, includes: an operating platform 28, a cap beam 29, a traction device 33, lifting jacks 36, a boom 40, a slide bar 41, and a lifting ring 45. The cap beam 29 is located on top of the adjacent protective piles 5, and the top of the cap beam 29 is evenly equipped with screws 30, while slide bars 41 are symmetrically arranged between the cap beams 29. The operating platform 28 rests on top of the cap beam 29 and adopts a frame design with a hole in the center. A slide bar 41 is located below the hole. Lifting jacks 36 are evenly arranged near the hole of the operating platform 28, and booms 40 are connected below the lifting jacks 36. A lifting ring 45 is located below the booms 40.

[0057] In this embodiment, the operating platform 28 is located above the newly built receiving well 3. The top of the operating platform 28 is evenly provided with boom insertion holes 21 and screw holes 26. The screw 30 passes through the boom insertion hole 21 and is fixed with screws 31. The boom 40 passes through the boom insertion hole 21. One end of the wire rope 32 is connected to the ear plate 34, and the other end is connected to the traction device 33.

[0058] Example 2

[0059] Based on the same concept, this embodiment provides a construction method for relocating and connecting a high-pressure sewage pipeline during normal operation of the reverse-construction caisson connection well in embodiment 1, including the following steps:

[0060] S1. Reinforce and protect the area around the old pipe 6:

[0061] Protective piles 5 are used to reinforce the old pipeline 6 around the new receiving well 3 to prevent disturbance during the excavation of the new receiving well 3; at the same time, high-pressure jet grouting piles 1 are constructed at the location of the new receiving well 3 to stop the water flow and protect the wall, with an overlap of 15-20cm between adjacent protective piles 5 and high-pressure jet grouting piles 1.

[0062] S2. Construction of new receiving well 3 using the reverse construction method:

[0063] The side wall of the newly built receiving well 3 is reserved with old pipe hole 22 and new pipe hole 39. The new receiving well 3 is constructed using the reverse construction method, that is, the new receiving well 3 is constructed from top to bottom in sections, while the corresponding high-pressure jet grouting pile 1 is broken; at the same time, the old pipe 6 is wrapped, that is, the old pipe 6 passes through the old pipe hole 22 of the new receiving well 3.

[0064] Construction of S3, jacking shaft 9 and new pipeline 8:

[0065] The jacking shaft 9 and the new pipeline 8 are constructed using the jacking method. The side wall of the jacking shaft 9 is provided with a jacking reserved hole 38. The new pipeline 8 is inserted into the jacking reserved hole 38 and connected to the jacking shaft 9. The new pipeline 8 is inserted into the new pipeline hole 39 and connected to the newly built receiving shaft 3, and sealed with waterproof mortar.

[0066] S4. Construction of the traction control frame:

[0067] A capping beam 29 is constructed on top of the protective pile 5. Specifically, a screw rod 30 is reserved on the top of the capping beam 29 for positioning and fixing the operating platform 28. At the same time, sliding rods 41 are symmetrically installed on the inner side of the capping beam 29. Then, the operating platform 28 is installed on top of the capping beam 29. A traction device 33 and a lifting jack 36 are installed on the top of the operating platform 28, and a lifting rod 40 and a lifting ring 45 are installed at the bottom of the lifting jack 36.

[0068] S5. Install the sliding construction platform:

[0069] The sliding sleeve 35 is fitted onto the sliding rod 41, and the ear plate 34 of the sliding sleeve 35 is connected to the traction device 33 by the wire rope 32.

[0070] S6. Construction of the suspension rear support device:

[0071] The traction device 33 is activated to move the construction basket 27 driven by the sliding sleeve 35 to carry out the construction of the suspension support device at different positions. Specifically, the suspension support device is installed below the lifting rod 40. Specifically, the upper arc clamp 17 and the lower arc clamp 25 are clamped to the upper and lower parts of the old pipe 6 respectively, and then spliced ​​at the connecting plate 18 and fixed with bolts 19. Then, the lifting jack 36 is adjusted to a suitable height, and the bolts 19 are connected to the lifting ring 45. At the same time, the telescopic sleeve 16 and the support rod 11 are adjusted so that the suction cup 13 is supported on the side wall of the newly built receiving well 3.

[0072] S7. Install the cutting and stabilizing bracket:

[0073] Adjust the telescopic jack 23 so that the telescopic rod 37 reaches the designated position. The construction personnel then install the cutting and stabilizing bracket on the bottom plate of the newly built receiving well 3. Specifically, start the adjusting jack 43 so that the support rod 42 moves the support arc plate 14 downward. After the base 12 is placed on the bottom plate of the newly built receiving well 3, ensure that the base 12 is secured between the front and rear side walls of the newly built receiving well 3. Then start the adjusting jack 43 so that the support rod 42 moves upward and is secured to the bottom of the old pipeline 6 by the support arc plate 14.

[0074] S8, Cutting and Sealing Connection of Old Pipeline 6:

[0075] Adjust the telescopic jack 23 so that the telescopic rod 37 reaches the designated position. The construction workers use the cutting machine 2 to cut the old pipe 6 at the cutting position. At the same time, install the steel plate waterstop wall 4 at the cutting position of the old pipe hole 22 at the abandoned position of the old pipe 6. Simultaneously, fill the old pipe 6 with waterproof foam concrete 7 to seal it, thereby realizing the connection construction between the new receiving well 3, the remaining old pipe 6, the new pipe 8, and the jacking well 9.

[0076] After the old pipe 6 is cut, the cutting support is removed. At the same time, the telescopic sleeve 16 is adjusted so that the suction cup 13 is detached from the side wall of the new receiving well 3. The cut old pipe 10 is then lifted out of the new receiving well 3 using the upper arc clamp 17, the lower arc clamp 25, the lifting jack 36 and the hoist 40.

[0077] The parts not described in detail in this application are prior art, and therefore are not described in detail in this application.

[0078] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0079] Although this document uses a significant amount of technical terminology, the possibility of using other terms is not excluded. These terms are used merely to facilitate the description and explanation of the nature of this application; interpreting them as any additional limitation would be contrary to the spirit of this application.

[0080] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A method for relocating and connecting a high-pressure sewage pipeline during normal operation of a reverse-operation caisson connection well, characterized in that... Includes a suspended support device, a cutting and stabilizing bracket, a sliding construction platform, and a traction operation frame, among which: The suspension rear support device includes an upper arc clamp plate (17) and a lower arc clamp plate (25) arranged symmetrically. The two ends of the upper arc clamp plate (17) and the lower arc clamp plate (25) are connected by a connecting plate (18). The top of the connecting plate (18) is provided with a socket (24) and a telescopic sleeve (16) is installed. The telescopic sleeve (16) is connected to a support rod (11) with a suction cup (13) by a fastening nut (15). The cutting and stabilizing support includes a base (12), a support arc plate (14) and an adjusting jack (43). The base (12) is connected to a support rod (42) through the adjusting jack (43). The support rod (42) is provided with a support arc plate (14) at its top. The sliding construction platform includes a sliding sleeve (35) sleeved on a sliding rod (41). The bottom of the sliding sleeve (35) is connected to the construction basket (27) via a telescopic rod (37). The front side of the sliding sleeve (35) is provided with an ear plate (34). The traction operation frame includes a crown beam (29) set on the top of the protective pile (5), an operation platform (28) with a sliding rod (41) installed on the crown beam (29), and the operation platform (28) is equipped with a traction device (33) and a lifting jack (36) connecting the lifting ring (45).

2. The method for relocating and connecting a high-pressure sewage pipeline during normal operation of a reverse-operation caisson connection well according to claim 1, characterized in that: A bolt (19) is inserted into the insertion hole (24) of the docking plate (18), and the top of the bolt (19) is provided with an insertion hole (20). The lifting ring (45) is detachably connected to the bolt (19) through the insertion hole (20).

3. The method for relocating and connecting a high-pressure sewage pipeline during normal operation of a reverse-operation caisson connection well according to claim 1, characterized in that: The operating platform (28) is provided with a boom insertion hole (21) and a screw hole (26). The screw (30) on the crown beam (29) passes through the screw hole (26) and is fixed by a screw (31). The boom (40) of the lifting jack (36) passes through the boom insertion hole (21).

4. The method for relocating and connecting a high-pressure sewage pipeline during normal operation of a reverse-operation caisson connection well according to claim 1, characterized in that: The old pipeline (6) is surrounded by protective piles (5). A new receiving well (3) with the old pipeline hole (22) is constructed using the reverse construction method. The new receiving well (3) is surrounded by high-pressure jet grouting piles (1). The adjacent ends of the protective piles (5) and the high-pressure jet grouting piles (1) overlap by 15-20cm.

5. The method for relocating and connecting a high-pressure sewage pipeline during normal operation of a reverse-operation caisson connection well according to claim 1, characterized in that: The sliding construction platform also includes a telescopic jack (23) installed between the top of the construction basket (27) and the telescopic rod (37), the telescopic jack (23) being used to adjust the working height of the construction basket (27).

6. A construction method for relocating and connecting a high-pressure sewage pipeline during normal operation using the reverse-engineered caisson connection well as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Construct protective piles (5) around the old pipeline (6) and construct high-pressure jet grouting piles (1) at the location of the newly built receiving well (3). S2. Construct a new receiving well (3) with old pipe hole (22) using the reverse construction method, and simultaneously break the high-pressure jet grouting pile (1) at the corresponding position. S3. The new pipe (8) is jacked into the pipe well (9) so that the new pipe (8) is inserted into the new pipe hole (39) of the receiving well (3); S4. Install the traction operation frame, put the sliding sleeve (35) on the slide bar (41), and connect the ear plate (34) to the traction equipment (33) through the wire rope (32). S5. Start the traction equipment (33) to move the sliding construction platform, install the upper arc clamp (17) and lower arc clamp (25) of the suspension back support device, and fix them with bolts (19) and nuts (44); S6. Adjust the jack (43) to make the supporting arc plate (14) press against the old pipe (6), cut the old pipe (6) and then pour waterproof foam concrete (7) to seal it, and hoist the cut old pipe (10).

7. The construction method according to claim 6, characterized in that: The installation of the suspension rear support device in step S5 includes: Adjust the telescopic sleeve (16) so that the suction cup (13) of the support rod (11) abuts against the side wall of the receiving well (3), and the suction pressure of the suction cup (13) is 0.2-0.5MPa.

8. The construction method according to claim 6, characterized in that: The expansion coefficient of the waterproof foamed concrete (7) mentioned in step S6 is 1.5-2.5 times, and the grouting pressure is 0.3-0.8MPa.

9. The construction method according to claim 6, characterized in that: The reverse operation method described in step S2 includes: The well wall structure of the receiving well (3) is constructed in sections from the ground downwards, with each section having a construction depth of no more than 3m and an interval of more than 24 hours between adjacent sections.

10. The construction method according to claim 6, characterized in that: The step of sealing the old pipe (6) in step S6 also includes: A steel plate waterstop wall (4) is installed at the cut position of the old pipe hole (22) at the abandoned location of the old pipe (6).

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