A high-pressure water jet disturbance correction method for a rectangular top pipe deflection pipe joint group

Abstract

This invention discloses a high-pressure water jetting method for correcting the deflection of rectangular pipe jacking sections, belonging to the field of underground engineering correction technology. The method includes the following steps: determining the number of pipe sections to be corrected and the required correction value for each section; arranging settlement monitoring points inside the pipe sections and monitoring the settlement of the pipe section group throughout the correction process; constructing vertical disturbance holes at the bottom of each pipe section near the side with less settlement, and constructing vertical disturbance holes on the outer side of the pipe section on the side with less settlement; repeatedly jetting water into the vertical disturbance holes on the bottom and sides of the pipe section to soften the disturbed soil, causing the side with less settlement to sink under the weight of the pipe section and earth pressure; after each pipe section reaches the target correction value, fixing the corrected pipe section by grouting and sealing each vertical disturbance hole; and performing anti-seepage treatment on the opening locations of the pipe sections.

Description

Technical Field

[0001] This invention belongs to the field of underground engineering deviation correction technology, specifically relating to a method for high-pressure water jetting disturbance correction of rectangular jacking pipe deflection pipe sections. Background Technology

[0002] Pipe jacking, as a trenchless construction method, has played a positive role in the construction of various underground municipal pipelines, utility tunnels, and urban underground transportation in complex environments due to its advantages such as small excavation volume, fast construction speed, and minimal impact on urban traffic. Among them, rectangular pipe jacking has a greater space utilization rate than circular pipe jacking, and has thus been widely promoted and applied in engineering fields such as power tunnels, municipal utility tunnels, and underground passages.

[0003] However, it should be noted that during the jacking construction of rectangular pipe sections, uneven settlement and cross-sectional deflection may occur due to factors such as uneven ground hardness, mechanical failures, and large monitoring and measurement errors. The deflection of pipe sections can reach tens or even hundreds of meters. When the deflection of a local pipe section is severe, the torsional effect may generate additional stress within the pipe section, or even cause damage to the pipe section connection points, seriously affecting the safety and normal use of the rectangular pipe jacking structure. Currently, existing standards clearly stipulate the limits for the pipe position deviation of rectangular pipe jacking. The standard "Technical Specification for Rectangular Pipe Jacking Engineering" T / CECS 716 specifies that the allowable deviation of the tunnel axis for rectangular pipe jacking (the difference between the elevation of the centerline of the top surface of the cross-section bottom plate and the elevation of the top surface of the bottom plate at a single corner) is ±80mm. The current industry standard "Technical Standard for Thermal Mechanical Pipe Jacking" CJJ 284 stipulates that the allowable deviation of the misalignment between adjacent pipes in reinforced concrete pipe jacking is 15% of the wall thickness and less than 20mm. Currently, due to differences in geological formations, improper construction operations, and other uncertainties, some rectangular pipe jacking projects have experienced excessive pipe section deflection after construction. It is urgent to correct and address pipe sections that do not meet the construction acceptance standards.

[0004] Existing technologies for correcting the settlement of above-ground structures mainly fall into three categories: forced settlement, jacking, or a combination of both. Forced settlement is the most widely used method in construction engineering. Its principle is to ensure that the side with greater settlement does not continue to settle, while taking measures to increase the settlement of the side with less settlement, thereby eliminating or reducing the existing settlement difference. However, current forced settlement correction work is mostly aimed at above-ground structures, and in-situ forced settlement correction for underground structures such as utility tunnels is relatively rare.

[0005] Rectangular pipe jacking structures are located underground, surrounded and constrained by soil with no free surfaces. When a pipe segment deflects, the soil constraint makes correction more difficult than for above-ground structures. Current remedial measures for deflected rectangular pipe jacking structures include: direct internal reinforcement of the pipe segment, adjusting the pipe position after excavation, and abandoning the jacked section and rebuilding. Internal reinforcement, however, requires additional reinforcing structures, reducing usable space within the pipe segment, and the structural stress caused by deflection cannot be eliminated. Open-cut methods for pipe positioning correction require initial foundation pit support (and dewatering if necessary). When the pipeline is buried at a great depth, support is difficult, risky, time-consuming, requires specific environmental conditions, and is costly.

[0006] Therefore, a pipe segment group correction construction method that has minimal impact on the surrounding environment, good geological adaptability, low correction risk, and high efficiency is currently needed for the correction work after the rectangular pipe segment deflection exceeds the limit. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a high-pressure water jetting disturbance correction method for deflection correction of prefabricated underground engineering projects such as rectangular jacking pipes. This method can solve problems such as excessive uneven settlement and deflection exceeding limits caused by differences in strata, improper construction operations, and other uncertain factors. By employing high-pressure water jetting disturbance technology, water jetting disturbs the soil on the bottom and side surfaces, causing the soil on the side with smaller settlement to be lost or softened, reducing the soil constraint effect. Under the action of soil pressure and the self-weight of the pipe section, and even the addition of counterweights inside the pipe, the pipe section settles on the side with smaller settlement or the opposite direction of deflection, thereby achieving the purpose of correction.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0009] In a first aspect, the present invention provides a method for correcting the deviation of a rectangular jacking pipe deflection pipe section group by high-pressure water jetting, comprising the following steps:

[0010] The scope of the pipe sections to be corrected and the target correction values ​​for each section were determined. Settlement monitoring points were set up inside the pipe sections, and settlement monitoring of the pipe section group was conducted throughout the correction construction process. Based on the target correction values, the number of disturbance passes for the pipe section group was initially determined. Vertical disturbance holes were constructed at the bottom of each pipe section near the side with less settlement, and vertical disturbance holes were constructed on the outer side of the pipe section on the side with less settlement. Starting from one end of the pipe section group to be corrected, the soil at the bottom of each pipe section was disturbed one by one. After the bottom disturbance was completed, the soil on the side of each pipe section was disturbed one by one, starting from the beginning. The pipe sections settled under the action of soil pressure and the self-weight of the structure. After the first disturbance of the bottom and side of the pipe section group to be corrected was completed, the disturbance construction parameters were determined based on the disturbance effect, and subsequent disturbance construction was started. Once the monitoring results show that the correction of the pipe section group has reached the target value, the corrected pipe section is fixed by grouting and all vertical disturbance holes are sealed. The openings of the pipe section are then treated to prevent leakage.

[0011] As a further technical solution, each pipe section to be corrected is numbered sequentially, and the elevation of the centerline of the top surface of the existing bottom plate and the elevation values ​​of the four corner points of the inner edge of each pipe section are determined. Based on the requirements for allowable deviations in pipe position according to relevant engineering standards ("Technical Specification for Rectangular Pipe Jacking Engineering" T / CECS 716), correction targets are set, and the required correction amount h on the side with smaller settlement for each pipe section is calculated. i and the total rotation angle θ of each pipe section to be corrected i .

[0012] As a further technical solution, when the pipe section group to be corrected is located in a water-rich sand layer or a confined aquifer, in order to prevent water and sand inrush after the vertical disturbance hole in the bottom plate is opened, the following method is adopted: a dewatering well is constructed next to the corrected pipe section for dewatering treatment. After the dewatering stabilizes, the water level should be lowered to a set distance from the bottom of the pipe section. After the groundwater level is lowered, the vertical disturbance hole at the bottom of the pipe is constructed.

[0013] As a further technical solution, the bottom elevation of the vertical disturbance holes at the bottom of the pipe is located at a predetermined distance below the pipe bottom elevation. The diameter of the vertical disturbance holes should meet the requirements for disturbance construction, preferably 90mm to 110mm. When constructing lateral disturbance holes, the lateral disturbance holes should be 0.3 to 0.6m away from the pipe body. The spacing between the lateral disturbance holes can be the same as the spacing between the vertical disturbance holes, or it can be adjusted as needed according to the required settlement effect.

[0014] As a further technical solution, the vertical disturbance holes at the bottom of the pipe are evenly distributed on the side of the pipe section with less settlement. The number of vertical disturbance holes at the bottom of the pipe should be calculated according to the following formula, and the calculated value should be rounded up:

[0015] In the formula, m i h represents the number of vertical disturbance holes formed at the bottom of the i-th rectangular pipe section; i,minh represents the settlement (mm) to be corrected of the pipe section with the smallest settlement to be corrected in the rectangular pipe section group; i,max The value of L is the settlement amount (mm) of the rectangular pipe section with the largest settlement to be corrected in the group of rectangular pipe sections; L is the length of each rectangular pipe section (m); h i The amount of settlement to be corrected.

[0016] As a further technical solution, the process of correcting water jet disturbance is as follows:

[0017] The settlement and deflection of each pipe segment during the jacking process were statistically analyzed to identify sections with excessive settlement, which were then designated as the pipe segment group requiring correction. The required settlement h for each segment in the pipe segment group was determined based on the allowable deviation requirements for pipe position in relevant engineering standards. i Draw a diagram showing the deflection of the tube segment group.

[0018] The correction process is based on the required settlement amount h to be corrected. i The correction work should be carried out in stages, and the correction target value for each stage should be determined. Each pipe section to be corrected should be disturbed and settled several times to achieve the expected correction target.

[0019] As a further technical solution, during the initial correction, starting with the pipe section at the end of the pipe group to be corrected, water jetting is performed to disturb the vertical disturbance holes at the bottom of the pipe, softening the soil at the bottom and causing the pipe section to settle. After the first disturbance of the end pipe section to be corrected is completed, the remaining pipe sections are sequentially subjected to the first bottom water jetting disturbance. Then, starting from the end pipe section to be corrected, the first pipe-side disturbance is performed on each section of the pipe group to be corrected. The disturbance range of the pipe-side disturbance holes should extend from the top surface of the pipe section to the bottom of the vertical disturbance hole on the pipe side. Similarly, the disturbance is performed on each pipe section until all the first pipe-side disturbances of the pipe group to be corrected are completed. At this point, the first disturbance of the pipe group to be corrected is completed.

[0020] After completing the first disturbance of the pipe section group to be corrected, start from the end of the pipe section group to be corrected and repeat the work steps of the first disturbance of the pipe section group to be corrected, and complete the subsequent planned number of water jet disturbances until the settlement of the pipe section group to be corrected reaches the expected correction target.

[0021] As a further technical solution, during the correction period, settlement monitoring points are set up inside the pipe sections to continuously monitor the settlement of each pipe section.

[0022] The beneficial effects of the present invention are as follows:

[0023] The high-pressure water jetting disturbance correction method of this invention avoids open-cut construction, reduces project costs, minimizes auxiliary work, and requires fewer large-scale equipment. The correction takes effect quickly, shortening the construction period.

[0024] The high-pressure water jetting disturbance correction method of the present invention has a high degree of versatility because the soil area disturbed by water jetting is small and the adverse effects caused by precipitation and vertical disturbance are within a controllable range. It can be applied to situations with complex geological conditions or surrounding environment.

[0025] The high-pressure water jetting disturbance correction method of the present invention addresses the settlement h of each pipe section to be corrected. i The correction work was carried out by gradually applying the forced reduction amount in stages. This was done to reduce the relative displacement between two adjacent pipe sections caused by the correction, reduce the stress change at the rectangular pipe section joint, and avoid secondary damage to the pipe section joint due to the correction work.

[0026] The high-pressure water jetting disturbance correction method of the present invention corrects the deviation to a predetermined elevation, and then uses grouting to stop the settlement of the rectangular pipe section group, ensuring stable and reliable operation during the later use of the pipe jacking. Attached Figure Description

[0027] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0028] Figure 1 This is a flowchart of the method for correcting the deviation of a rectangular jacking pipe deflection pipe section group by high-pressure water jetting according to the present invention;

[0029] Figure 2 This is a schematic diagram of the arrangement of the rectangular jacking pipe deflection pipe section group for high-pressure water jet disturbance correction according to the present invention;

[0030] Figure 3 This is a schematic diagram of the initial and final states of the rectangular tube section correction and tilting of the present invention;

[0031] Figure 4 This invention describes the correction method used in the correction process of the jacking pipe group to be corrected.

[0032] Figure 5 This is a diagram showing the relative positions of the pipe section group to be corrected and the settlement monitoring points in this invention.

[0033] In the diagram: the spacing or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only.

[0034] Among them: 1. Group of rectangular jacking pipe sections to be corrected, 2. Vertical disturbance holes at the bottom of the pipe, 3. Vertical disturbance holes on the side of the pipe, 4. Pipe joint, 5. Middle rectangular pipe section of the section to be corrected, 6. Starting section of the rectangular pipe section to be corrected, 7. Correction direction, 8. Settlement monitoring point, 9. Pipe jacking axis; T1. Thickness of the side wall of the rectangular pipe section, T2. Thickness of the top plate of the rectangular pipe section, T3. Thickness of the bottom plate of the rectangular pipe section. Detailed Implementation

[0035] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0036] In a typical embodiment of the present invention, such as Figure 1 As shown, a high-pressure water jetting disturbance correction method for rectangular pipe jacking sections is proposed. This correction method is applicable to the correction of severely deflected pipe jacking sections under complex geological conditions. Under complex geological conditions, pipe jacking is prone to large deflection.

[0037] Specifically, the correction method is carried out in the following steps:

[0038] S1: First, conduct a comprehensive measurement and verification of the deflection of the rectangular pipe section group in the pipeline where there is deflection, and clarify the number of pipe sections to be corrected and the required correction value for each pipe section.

[0039] The rectangular jacking pipe sections to be corrected in section group 1 are numbered sequentially as 1, 2, 3, ..., i, ..., n. The required correction amount for each section should be determined based on the measurement results and the allowable deviation values ​​specified in relevant standards. Specifically, the elevation of the centerline of the top surface of the current base plate and the elevation values ​​of the four corner points of the inner edge of each section should be determined by methods such as total station marking measurement or three-dimensional laser scanning measurement. Based on the correction target, the final elevation for forced settlement is determined, and the required correction amount h on the side with smaller settlement of each section is obtained. i And the total angle value θ to be corrected i .

[0040] Settlement h to be corrected i and the total rotation angle θ of each pipe section to be corrected i The calculation should be performed according to the following formula:

[0041]

[0042] In the formula, h 0,i h represents the current elevation. final,i B represents the final elevation determined based on the correction target, and B is the inner width of the pipe section.

[0043] S2: When there are doubts about the geological survey report, supplementary investigations should be conducted to reveal whether the strata are evenly distributed, and to ascertain the distribution of groundwater and whether there are any underground obstacles that may affect construction.

[0044] S3: Before correction, settlement monitoring points 8 need to be set up at key locations of each pipe section. During the correction period, settlement monitoring should be intensified to fully understand the correction situation.

[0045] S4: When located in a water-rich sand layer or a confined aquifer, in order to prevent water and sand inrush after the vertical disturbance hole of the bottom plate is opened, the following method shall be adopted: Dewatering treatment shall be carried out on the soil layer where the rectangular pipe section group to be corrected is located. The bottom elevation of the dewatering well should be 2.5 to 3.0 m lower than the bottom elevation of the rectangular jacking pipe. After the dewatering is stable, the water level should be lowered to a certain distance from the bottom of the pipe section. Preferably, this distance should not be less than 0.5 m.

[0046] S5: Construct vertical disturbance holes 2 at the bottom of the rectangular pipe section group on the side with less deflection settlement. The vertical disturbance holes should be evenly distributed on the side with less settlement of the pipe section, and the number of holes should be estimated according to the following formula:

[0047]

[0048] In the formula, m i h is the number of vertical disturbance holes at the bottom of the i-th rectangular pipe section, calculated according to equation (3) and rounded up to the nearest integer; i,min h is the settlement to be corrected of the pipe section with the smallest settlement to be corrected in the rectangular pipe section group; i,max L represents the settlement to be corrected of the segment with the largest settlement in the rectangular pipe section group; L is the length of each rectangular pipe section. The diameter d1 of the vertical disturbance hole at the bottom of the pipe should meet the requirements for disturbance construction. Preferably, d1 of the vertical disturbance hole at the bottom of the pipe should be 108mm. The vertical disturbance hole should extend 1.0 to 1.5m below the rectangular pipe section.

[0049] S6: A vertical disturbance hole 3 is constructed in the adjacent soil outside the sidewall of the pipe section group with less settlement to be disturbed by water jetting. The bottom elevation of the vertical disturbance hole should be 1.0m below the bottom elevation of the pipe section group. The diameter d2 of the vertical disturbance hole should meet the requirements for disturbance construction. Preferably, the diameter d2 of the vertical disturbance hole can be 108mm. The disturbance range of the vertical disturbance hole should extend from the top surface of the pipe section to the bottom of the vertical disturbance hole.

[0050] S7: After being disturbed by water jetting, the soil on the bottom and outer sides of the pipe section will soften, and the pipe section will settle under the action of soil pressure and the structure's own weight. The correction effect will be determined based on settlement observation. If necessary, additional load will be applied to the side with the larger deflection within the rectangular pipe section to accelerate the correction process. The pressure and flow rate of the high-pressure water jet will be determined based on field tests. A single-tube jet grouting machine is recommended for high-pressure water jetting.

[0051] Specifically, the correction process for rectangular pipe section groups is as follows:

[0052] ① The settlement and deflection of each pipe segment during this jacking process will be statistically analyzed to identify the sections with excessive settlement. These sections will be designated as the pipe segment group requiring correction. Based on the allowable deviation requirements for pipe position in relevant engineering standards, the required settlement h for each segment in the pipe segment group will be determined. i Draw a diagram showing the deflection of the pipe segment group;

[0053] ② The correction process is based on the required settlement amount h to be corrected. i The correction work is carried out in stages, and the correction target value is determined for each stage. Each pipe section to be corrected should be disturbed and settled several times to achieve the expected correction target.

[0054] ③ When carrying out the first step of correction, a high-pressure water jetting operation team can be set up according to the actual construction space inside the pipe. The team inside the pipe will carry out water jetting disturbance in the bottom disturbance hole inside the pipe section, and the team outside the pipe will carry out disturbance in the side disturbance hole on the ground surface. The operation team should first be arranged at the end pipe section of the pipe section group to be corrected. The team inside the pipe will carry out water jetting disturbance in the bottom vertical disturbance hole, and the team outside the pipe will carry out water jetting disturbance in the adjacent side vertical disturbance hole at that pipe section.

[0055] ④ After the initial disturbance of the end pipe section is completed, starting from that pipe section, the remaining pipe sections should be subjected to initial bottom water jet disturbance along the correction direction 7 to soften the soil at the bottom of the pipe and promote the settlement of the pipe sections. After the initial disturbance of the end pipe section to be corrected is completed, the initial bottom water jet disturbance should be carried out on the remaining pipe sections in sequence. Then, starting from the end pipe section to be corrected, the initial pipe-side disturbance of the pipe section group should be carried out section by section until all the initial pipe-side disturbances of the pipe section group to be corrected are completed. At this point, the initial disturbance of the pipe section group to be corrected is completed.

[0056] ④ After completing the first disturbance of the pipe section group to be corrected, start from the end of the pipe section group to be corrected and repeat the work steps of the first disturbance of the pipe section group to be corrected, and complete the subsequent planned number of water jet disturbances until the settlement of the pipe section group to be corrected reaches the expected correction target.

[0057] ⑤ Settlement monitoring of each pipe section was carried out continuously during the correction period. After the correction of each pipe section reached the target value, the corrected pipe section was fixed by grouting to prevent further settlement.

[0058] S8: If there are any abnormalities such as unexpected settlement or sudden settlement during the correction process, an early warning should be issued in time, and the correction construction should be stopped immediately. Targeted treatment measures such as pressure grouting should be adopted.

[0059] S9: After the correction reaches the target value, each vertical disturbance hole should be filled by grouting.

[0060] S10: Seal the vertical disturbance holes in the bottom plate of the rectangular jacking pipe and take measures to prevent leakage.

[0061] The method of this invention ensures the smooth repositioning of the deflected rectangular pipe section group while minimizing the impact of the correction construction on the surrounding environment. This correction method is highly versatile, requires minimal construction work, has controllable risks, does not pollute the surrounding environment, and is green and environmentally friendly.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for correcting the deviation of a rectangular pipe jacking section group by high-pressure water jetting, characterized in that... Includes the following steps: The scope of the pipe jacking section to be corrected and the required correction target value for each section are determined. Settlement monitoring points are set up inside the pipe sections. Settlement monitoring of the pipe section group is carried out throughout the correction construction process. The number of disturbance passes of the pipe section group is initially determined based on the correction target value. Vertical disturbance holes are constructed at the bottom of each pipe section of the rectangular pipe section group to be corrected, near the side with the smallest settlement. Vertical disturbance holes are constructed on the outer side of the pipe section with the smallest settlement. Starting from one end of the pipe section group to be corrected, the soil at the bottom of each pipe section is disturbed. After the soil at the bottom is disturbed, the soil on the side of each pipe section is disturbed starting from the beginning. The pipe sections settle under the action of soil pressure and the self-weight of the structure. After the first disturbance of the bottom and sides of the pipe section group is completed, the disturbance construction parameters are adjusted according to the disturbance effect and subsequent disturbance construction is started. When the monitoring results show that the pipe section group to be corrected has reached the target value, the corrected pipe section is fixed by grouting and each vertical disturbance hole is sealed. The opening position of the pipe section is treated to prevent leakage. When the pipe section group to be corrected is located in a water-rich sand layer or a confined aquifer, in order to prevent water and sand inrush after the vertical disturbance holes in the bottom plate are opened, the following methods shall be adopted: construct a dewatering well next to the corrected pipe section for dewatering treatment. After the dewatering stabilizes, the water level should be lowered to a set distance from the bottom of the pipe section. After the groundwater level is lowered, construct the vertical disturbance holes at the bottom of the pipe and construct the vertical disturbance holes on the side of the pipe as needed. The vertical disturbance holes at the bottom of the pipe are evenly distributed on the side of the pipe section with less settlement, and the diameter of the vertical disturbance holes at the bottom of the pipe is... d 1. The construction should be carried out under disturbance conditions, and the number of holes should be calculated according to the following formula: ; In the formula, For the first i The number of vertical disturbance holes formed at the bottom of the rectangular pipe section; The settlement to be corrected is the smallest settlement to be corrected among the rectangular pipe sections in the group; The settlement to be corrected is the settlement of the segment with the largest settlement to be corrected in the rectangular pipe segment group; L This refers to the length of each section of the rectangular tube. h i The amount of settlement to be corrected.

2. The high-pressure water jetting disturbance correction method for rectangular jacking pipe deflection pipe section groups as described in claim 1, characterized in that, Each pipe section to be corrected is numbered sequentially. The elevation of the centerline of the top surface of the existing bottom slab and the elevation values ​​of the four corner points of the inner edge of each pipe section are determined. Based on the allowable deviation requirements of the pipe position in relevant engineering standards, correction targets are set, and the required amount of settlement to be corrected on the side with the smaller settlement of each pipe section is obtained. hi and the total rotation angle value to be corrected for each pipe section θi .

3. The method for correcting the deviation of rectangular jacking pipe sections by high-pressure water jetting as described in claim 1, characterized in that, The bottom elevation of the vertical disturbance hole on the pipe side is located at a set distance below the bottom elevation of the pipe section group, and the diameter of the vertical disturbance hole on the pipe side should meet the requirements for disturbance construction.

4. The high-pressure water jetting disturbance correction method for rectangular jacking pipe deflection pipe section groups as described in claim 1, characterized in that, When constructing lateral disturbance holes, the lateral disturbance holes should be 0.3~0.6m away from the pipe body. The spacing of the lateral disturbance holes can be the same as the spacing of the vertical disturbance holes, or it can be adjusted as appropriate according to the required settlement effect.

5. The high-pressure water jetting disturbance correction method for rectangular jacking pipe deflection pipe section groups as described in claim 1, characterized in that... The process of correcting water disturbance is as follows: The settlement and deflection of each pipe segment during the jacking process were statistically analyzed to identify sections with excessive settlement, which were then designated as the pipe segment group requiring correction. The amount of settlement to be corrected for each segment in the pipe segment group was determined based on the allowable deviation requirements for pipe position in relevant engineering standards. h i Draw a diagram showing the deflection of the tube segment group.

6. The high-pressure water jetting disturbance correction method for rectangular jacking pipe deflection pipe section groups as described in claim 5, characterized in that, The correction process is based on the required amount of settlement to be corrected. h i The correction work should be carried out in stages, and the correction target value for each stage should be determined. Each pipe section to be corrected should be disturbed and settled several times to achieve the expected correction target.

7. The high-pressure water jetting disturbance correction method for rectangular jacking pipe deflection pipe section groups as described in claim 6, characterized in that, in When performing the first step of correction, start with the pipe section at the end of the pipe section group to be corrected, and use water jetting to disturb the vertical disturbance hole at the bottom of the pipe to soften the soil at the bottom of the pipe and promote the sinking of the pipe section. After the first disturbance of the pipe section at the end is completed, perform the first bottom water jetting disturbance on the remaining pipe sections in sequence. Then, starting from the pipe section at the end, perform the first pipe-side disturbance on each section of the pipe section group to be corrected. The disturbance range of the pipe-side disturbance hole should extend from the top surface of the pipe section to the bottom of the vertical disturbance hole on the pipe side. Similarly, disturb each pipe section until all the first pipe-side disturbances of the pipe section group to be corrected are completed. Thus, the first disturbance of the control group was completed; After completing the first disturbance of the pipe section group to be corrected, start from the end of the pipe section group to be corrected and repeat the work steps of the first disturbance of the pipe section group to be corrected, and complete the subsequent planned number of water jet disturbances until the settlement of the pipe section group to be corrected reaches the expected correction target.

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