Submarine tunnel vertical jacking pipe joint hoisting construction and monitoring method

Abstract

The invention discloses a hoisting construction and monitoring method for a vertical jacking pipe joint of a subsea tunnel. The construction method comprises the steps of vehicle-mounted transportation of the pipe joints, hoisting of the pipe joints, preliminary adjustment and lowering of the postures of the pipe joints, rail pulley transportation of the pipe joints, monitoring and control when the pipe joints are in place, butt joint between the pipe joints, monitoring and control when the pipe joints are in butt joint and connection between the pipe joints. By means of the construction method, the pipe joints are safely and efficiently conveyed and hoisted to the vertical jacking equipment; the monitoring method comprises the steps of integrity inspection of the pipe joints, position coordinate monitoring and control, flatness monitoring and control of the pipe joints and axis consistency monitoring and control of the pipe joints, and the position coordinates, the levelness and the axis consistency of the pipe joints are monitored and controlled when the pipe joints are installed in place. Therefore, the pipe joint can be accurately and efficiently mounted on the vertical jacking equipment, and the hoisting construction quality and efficiency of the vertical jacking pipe joint of the subsea tunnel are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of underground tunnel engineering, and relates to a method for hoisting and monitoring a vertical jacking pipe section of a submarine tunnel. Background Art

[0002] Drainage tunnels are important supporting buildings for large nuclear power plants in coastal areas. The drainage head structure of a drainage tunnel usually consists of a horizontal shield tunnel and multiple vertical lifting pipes. The vertical lifting method is widely used in the lifting pipe construction of the drainage head structure of a drainage tunnel due to its advantages such as short construction period, small impact on the environment and high economic benefits.

[0003] During the vertical lifting construction of the submarine jacking pipeline, the pipe sections of the jacking pipeline need to be transported from the bottom of the surge tank to the vicinity of the vertical jacking operation area and hoisted onto the vertical jacking equipment. Since the vertical jacking operation area is far away from the bottom of the surge tank and the construction space inside the tunnel is small, how to safely, accurately and efficiently transport and hoist the heavy jacking pipeline sections onto the vertical jacking equipment will become a limiting factor in the vertical jacking construction of submarine tunnels.

[0004] On the other hand, when the pipe segment of the jacking pipeline breaks through the overlying strata, it is necessary to ensure that the pipe segment accurately docks with the previous pipe segment and rises in the vertical direction. Otherwise, excessive inclination will cause problems such as pipe segment jamming and gap leakage. In the seabed environment, leakage will cause high-pressure water and sediment to flow into the jacking pipeline, causing personal injury and scrapping of the water diversion project. Therefore, the pipe segment of the jacking pipeline is not allowed to exceed the inclination limit during the hoisting construction, and the consistency of the segment axis should be ensured.

[0005] At present, in the vertical jacking construction of submarine tunnels, pipe segments are mainly transported and hoisted onto vertical jacking equipment by manpower and simple equipment, and the docking between pipe segments is mainly observed and confirmed by naked eyes. At present, it is urgent to propose a pipe segment hoisting construction method and a corresponding docking monitoring method for the vertical jacking construction of submarine tunnels, so as to realize the safe, accurate and efficient transportation and hoisting of pipe segments onto vertical jacking equipment, and adopt information technology to detect and control the position and posture of pipe segments before jacking, so as to improve the information technology construction level of vertical jacking construction of submarine jacking pipes. Summary of the invention

[0006] In view of the shortcomings of the existing technology, the present invention proposes a method for vertical jacking pipe segment hoisting construction and monitoring in an undersea tunnel, which is suitable for the transportation, hoisting, and monitoring and control of the pipe segment position and posture in the vertical jacking construction of the jacking pipe of the drainage head structure of a submarine drainage tunnel, which is conducive to the safety, accuracy and efficiency of the pipe segment transportation and hoisting construction, as well as the informatization of the pipe segment position and posture monitoring.

[0007] The first aspect of the present application discloses a method for vertically lifting a pipe section in a submarine tunnel, the method comprising the following steps:

[0008] S101, vehicle transportation of pipe segments: placing the pipe segments on a special transport vehicle, and transporting the pipe segments to a vertical jacking operation area along a long-distance transport track in a horizontal tunnel that is matched with the special transport vehicle;

[0009] S102, lifting of pipe section: use hand chain hoist to lift the pipe section until the bottom of the pipe section is higher than the top surface of the track pulley;

[0010] S103, preliminary adjustment and lowering of the pipe segment's posture: preliminary adjustment of the pipe segment's posture to make it correspond to the mark on the top surface of the track pulley, and lowering the pipe segment to the top surface of the track pulley;

[0011] S104, rail pulley transportation of the pipe segment: transporting the pipe segment to the top of the jacking device by means of the rail pulley, and then temporarily removing the rail pulley and its matching rail, so that the pipe segment is located on the jacking device;

[0012] S105, monitoring and control of the pipe section in place: monitoring the position and posture parameters of the pipe section in place and controlling them;

[0013] S106, butt joint between pipe sections: lift the pipe section by means of a lifting device to butt joint the pipe section with the preceding pipe section;

[0014] S107, monitoring and control of pipe joint connection: monitoring and controlling the axis consistency parameters of pipe joint connection;

[0015] S108. Connection between pipe sections: Pipe sections are connected by bolts. After the bolts are tightened, waterproof adhesive material is used to fill the reserved bolt holes.

[0016] The second aspect of the present application discloses a monitoring method for the vertical lifting pipe section hoisting construction of a submarine tunnel, the monitoring method comprising the following steps:

[0017] S201. Integrity inspection of pipe joints: Check whether the pipe joints have any appearance defects during transportation and hoisting by combining visual inspection with instrument measurement to ensure that the cross-sectional dimensions and surface flatness of the components meet the requirements;

[0018] S202, Position coordinate monitoring and control: When the pipe segment of the jacking pipeline is installed in place, the plane position of the pipe segment is monitored by the positioning device and the optical measuring instrument; when constructing the nth pipe segment, the plane position coordinate of the center axis of the pipe segment is obtained by the positioning device as X an and Y an The plane position coordinate of the center axis of the pipe segment is obtained by optical measuring instrument as X bn and Y bn, the measured position coordinate deviation between the positioning device and the optical measuring instrument must satisfy the following expression, otherwise it should be re-monitored:

[0019]

[0020] Where [S1] is the measured coordinate deviation limit between the positioning device and the optical measuring instrument;

[0021] When the measured position coordinate deviation between the positioning device and the optical measuring instrument meets the above requirements, when constructing the nth pipe segment, the measured position coordinate (X n , Y n ) satisfies the following expression:

[0022]

[0023] The deviation between the measured position coordinates of the centerline of the pipe segment and the design plane position coordinates should satisfy the following expression:

[0024]

[0025] Among them, X0 and Y0 are the plane position coordinates of the center axis of the pipe section required by the design, and [S2] is the deviation limit between the measured position coordinates of the center axis of the pipe section and the designed plane position coordinates;

[0026] When the deviation between the measured position coordinates of the centerline of the pipe joint and the design plane position coordinates exceeds the limit, the position of the pipe joint should be adjusted until the requirements are met;

[0027] S203、Segment levelness monitoring and control: When the segment is installed, the levelness should be monitored by a levelness measuring instrument to ensure that the segment remains horizontal so that it can move in the vertical direction during vertical lifting; when constructing the nth segment, the segment levelness θ n It is defined as the angle between the pipe plane and the horizontal plane and satisfies the following expression:

[0028] θ n ≤[θ n ]

[0029] Among them, [θ n ] is the limit of pipe joint horizontality;

[0030] When the pipe section levelness θ n If the requirements are not met, the alarm is triggered by the alarm until the pipe joint is adjusted to the horizontal position θ n Only after the requirements are met can the alarm be lifted and vertical jacking construction continue;

[0031] S204, pipe segment axis consistency monitoring and control: The three-dimensional relative displacement between the installed nth pipe segment and the previous pipe segment is obtained through a three-dimensional joint measuring sensor, including axial relative displacement, radial relative displacement and tangential relative displacement, so as to obtain the relative degree of disengagement, relative rotational misalignment and relative plane misalignment between adjacent pipe segments; the relative degree of disengagement ΔL 1n Satisfies the following expression:

[0032] ΔL 1n ≤[ΔL 1n ]

[0033] Among them, the relative degree of disengagement ΔL 1n is the axial relative displacement value obtained by the three-axis joint sensor, [ΔL 1n ] is the relative disconnection degree limit;

[0034] Relative rotation misalignment ΔL 2n Satisfies the following expression:

[0035] ΔL 2n ≤[ΔL 2n ]

[0036] Among them, the relative rotation misalignment degree ΔL 2n It is numerically equal to the ratio of the tangential relative displacement value obtained by the three-way joint sensor to the outer surface radius of the pipe segment, [ΔL 2n ] is the limit of relative rotation misalignment;

[0037] Relative plane misalignment ΔL 3n Satisfies the following expression:

[0038] ΔL 3n ≤[ΔL 3n ]

[0039] Among them, the relative plane misalignment degree ΔL 3n is equal to the radial relative displacement value obtained by the three-way joint sensor, [ΔL 3n ] is the limit of relative plane misalignment;

[0040] When the relative degree of disengagement between the installed nth pipe segment and the previous pipe segment is ΔL 1n , relative rotation misalignment degree ΔL 2n Or the relative plane misalignment ΔL 3n If the requirements are not met, the alarm is triggered by the alarm until the relative disengagement degree ΔL is reduced by adjusting the position and posture of the pipe joint. 1n , relative rotation misalignment degree ΔL 2n and the relative plane misalignment ΔL 3n Only after all requirements are met can the alarm be lifted and vertical jacking construction continue.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: aiming at improving the precision and efficiency of the pipe segment hoisting process in the vertical jacking construction of the jacking pipe of the drainage head structure of the submarine drainage tunnel, a method for hoisting and monitoring the vertical jacking pipe segment of the submarine tunnel is disclosed, the construction method comprising vehicle transportation of the pipe segment, hoisting of the pipe segment, preliminary adjustment and lowering of the posture of the pipe segment, rail pulley transportation of the pipe segment, monitoring and control of the pipe segment in place, and docking between the pipe segments; the construction method realizes the safe, accurate and efficient transportation and hoisting of the pipe segment to the vertical jacking equipment; in addition, the present invention also discloses a monitoring method for the construction method, the method comprises integrity inspection of the pipe segment, position coordinate monitoring and control, horizontality monitoring and control of the pipe segment, and axis consistency monitoring and control of the pipe segment, the method is applicable to the vertical jacking pipe segment hoisting construction method of the submarine tunnel, and the position coordinates, horizontality and axis consistency of the pipe segment when it is installed in place are monitored and controlled, so as to realize the safe, accurate and efficient installation of the pipe segment on the vertical jacking equipment, and improve the quality and efficiency of the vertical jacking construction of the submarine jacking pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a flow chart of the vertical lifting pipe segment hoisting construction method of the submarine tunnel of the present invention;

[0043] Figure 2 It is a flow chart of the monitoring method of the vertical lifting pipe section hoisting construction of the submarine tunnel of the present invention;

[0044] Figure 3 It is a structural schematic diagram of the vertical jacking pipe segment hoisting construction method of the submarine tunnel of the present invention;

[0045] Figure numerals: 1-pipe section for lifting pipeline, 2-special transport vehicle, 3-long distance transport track, 4-hand winch, 5-track pulley, 6-lifting device, 7-horizontal tunnel. DETAILED DESCRIPTION

[0046] The following is a more detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and the accompanying drawings so that a person skilled in the art can implement the embodiments after reading the description. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The project based on this embodiment is the integrated design and construction project of drainage tunnels for units 3 and 4 of Zhangzhou Nuclear Power Plant. The project adopts the drainage scheme of "shield starting pit + drilled and blasted tunnel + shield tunnel + drainage head". The drainage head structure of the drainage tunnel consists of 1 horizontal tunnel 7 and 10 vertical reinforced concrete lifting pipes.

[0048] The first aspect of the present invention provides Figure 1 and 3A method for vertically lifting a pipe section in a submarine tunnel is shown, and the method specifically comprises the following steps:

[0049] S101, transporting the pipe segment by vehicle: placing the pipe segment 1 of the jacking pipeline on a special transport vehicle 2, and transporting the pipe segment to the vertical jacking operation area along a long-distance transport track 3 matched with the special transport vehicle 2 in a horizontal tunnel;

[0050] S102, lifting the pipe segment: using a hand chain hoist 4 to lift the pipe segment until the bottom of the pipe segment is higher than the top surface of the track pulley 5;

[0051] S103, preliminary adjustment and lowering of the pipe segment's posture: preliminary adjustment of the pipe segment's posture to make it correspond to the mark on the top surface of the track pulley 5, and lowering the pipe segment to the top surface of the track pulley 5;

[0052] S104, rail pulley transportation of the pipe segment: the pipe segment is transported to the top of the jacking device 6 by the rail pulley 5, and then the rail pulley 5 and its matching rail are temporarily removed, so that the pipe segment is located on the jacking device 6;

[0053] S105, monitoring and control of the pipe section in place: monitoring the position and posture parameters of the pipe section in place and controlling them;

[0054] S106, butt joint between pipe sections: lift the pipe section by the lifting device 6 to butt joint the pipe section with the preceding pipe section;

[0055] S107, monitoring and control of pipe joint connection: monitoring and controlling the axis consistency parameters of pipe joint connection;

[0056] S108. Connection between pipe sections: Pipe sections are connected by bolts. After the bolts are tightened, waterproof adhesive material is used to fill the reserved bolt holes.

[0057] The second aspect of the present application discloses Figure 2 The monitoring method for the vertical lifting pipe section hoisting construction of a submarine tunnel shown in the figure specifically comprises the following steps:

[0058] S201. Integrity inspection of pipe joints: Check whether the pipe joints have any appearance defects during transportation and hoisting by combining visual inspection with instrument measurement to ensure that the cross-sectional dimensions and surface flatness of the components meet the requirements;

[0059] In the specific implementation, the allowable deviation of the pipe segment diameter is required to be (+0mm, -4mm), and the allowable deviation of the pipe segment wall thickness is required to be (+4mm, -4mm); the appearance of the pipe segment is required to be smooth and clean, and there should be no honeycomb exposed ribs;

[0060] S202, Position coordinate monitoring and control: When the pipe segment of the jacking pipeline is installed in place, the plane position of the pipe segment is monitored by the positioning device and the optical measuring instrument; when constructing the nth pipe segment, the plane position coordinate of the center axis of the pipe segment is obtained by the positioning device as X an and Y an The plane position coordinate of the center axis of the pipe segment is obtained by optical measuring instrument as X bn and Y bn , the measured position coordinate deviation between the positioning device and the optical measuring instrument must satisfy the following expression, otherwise it should be re-monitored:

[0061]

[0062] Where [S1] is the measured coordinate deviation limit between the positioning device and the optical measuring instrument;

[0063] When the measured position coordinate deviation between the positioning device and the optical measuring instrument meets the above requirements, when constructing the nth pipe segment, the measured position coordinate (X n , Y n ) satisfies the following expression:

[0064]

[0065] The deviation between the measured position coordinates of the centerline of the pipe segment and the design plane position coordinates should satisfy the following expression:

[0066]

[0067] Among them, X0 and Y0 are the plane position coordinates of the center axis of the pipe section required by the design, and [S2] is the deviation limit between the measured position coordinates of the center axis of the pipe section and the designed plane position coordinates;

[0068] When the deviation between the measured position coordinates of the centerline of the pipe joint and the design plane position coordinates exceeds the limit, the position of the pipe joint should be adjusted until the requirements are met;

[0069] In the specific implementation, when the typical pipe segment is installed in place, the plane position coordinates of the center axis of the pipe segment are obtained by the positioning device and are X an =1.5mm and Y an =-0.4mm, and the plane position coordinates of the center axis of the tube segment are obtained by optical measuring instruments, respectively: X bn =0.8mm and Y bn =0.1mm, the measured position coordinate deviation between the positioning device and the optical measuring instrument is calculated according to formula (1) as follows:

[0070]

[0071] From formula (4), it can be seen that the measured position coordinate deviation between the positioning device and the optical measuring instrument meets the requirements, then the measured position coordinate of the center axis of the pipe segment (X n , Y n ) is calculated according to formula (2) as follows:

[0072]

[0073] The deviation between the measured position coordinates of the centerline of the pipe segment and the designed plane position coordinates is calculated according to formula (3) as follows:

[0074]

[0075] From formula (6), it can be seen that the deviation between the measured position coordinates of the centerline of the pipe segment and the design plane position coordinates does not exceed the limit;

[0076] S203、Segment levelness monitoring and control: When the segment is installed, the levelness should be monitored by a levelness measuring instrument to ensure that the segment remains horizontal so that it can move in the vertical direction during vertical lifting; when constructing the nth segment, the segment levelness θ n It is defined as the angle between the pipe plane and the horizontal plane and satisfies the following expression:

[0077] θ n ≤[θ n ] (7)

[0078] Among them, [θ n ] is the limit of pipe joint horizontality;

[0079] When the pipe section levelness θ n If the requirements are not met, the alarm is triggered by the alarm until the pipe joint is adjusted to the horizontal position θ n Only after the requirements are met can the alarm be lifted and vertical jacking construction continue;

[0080] In specific implementation, when a typical pipe segment is installed in place, the angle θ between the pipe segment plane and the horizontal plane obtained by the level measuring instrument is n is 0.3%, the limit of pipe joint horizontality [θ n ] is 0.5%, that is, θ n ≤[θ n ], which meets the requirements of formula (7) and does not trigger the alarm;

[0081] S204, pipe segment axis consistency monitoring and control: The three-dimensional relative displacement between the installed nth pipe segment and the previous pipe segment is obtained through a three-dimensional joint measuring sensor, including axial relative displacement, radial relative displacement and tangential relative displacement, so as to obtain the relative degree of disengagement, relative rotational misalignment and relative plane misalignment between adjacent pipe segments; the relative degree of disengagement ΔL 1nSatisfies the following expression:

[0082] ΔL 1n ≤[ΔL 1n ] (8)

[0083] Among them, the relative degree of disengagement ΔL 1n is the axial relative displacement value obtained by the three-axis joint sensor, [ΔL 1n ] is the relative degree of disengagement limit;

[0084] Relative rotation misalignment ΔL 2n Satisfies the following expression:

[0085] ΔL 2n ≤[ΔL 2n ] (9)

[0086] Among them, the relative rotation misalignment degree ΔL 2n It is numerically equal to the ratio of the tangential relative displacement value obtained by the three-way joint sensor to the outer surface radius of the pipe segment, [ΔL 2n ] is the limit of relative rotation misalignment;

[0087] Relative plane misalignment ΔL 3n Satisfies the following expression:

[0088] ΔL 3n ≤[ΔL 3n ] (10)

[0089] Among them, the relative plane misalignment degree ΔL 3n is equal to the radial relative displacement value obtained by the three-way joint sensor, [ΔL 3n ] is the limit of relative plane misalignment;

[0090] When the relative degree of disengagement between the installed nth pipe segment and the previous pipe segment is ΔL 1n , relative rotation misalignment degree ΔL 2n Or the relative plane misalignment ΔL 3n If the requirements are not met, the alarm is triggered by the alarm until the relative disengagement degree ΔL is reduced by adjusting the position and posture of the pipe joint. 1n , relative rotation misalignment degree ΔL 2n and the relative plane misalignment ΔL 3n Only after all requirements are met can the alarm be lifted and vertical lifting construction can be continued;

[0091] In the specific implementation, when the typical pipe joint is installed in place, the relative degree of disengagement ΔL is obtained by converting the data of the three-way joint measuring sensor. 1n The relative rotation misalignment is 1.1 mm and the relative rotation misalignment is ΔL. 2n 0.58%, relative plane misalignment ΔL 3nis 5.0mm; at the same time, the relative opening and closing disengagement limit [ΔL 1n ] is 2.0mm, and the relative rotation misalignment limit [ΔL 2n ] is 2.0%; the relative plane misalignment limit [ΔL 3n ] is 20mm; it can be seen that ΔL 1n ≤[ΔL 1n ], satisfying the requirements of formula (8); ΔL 2n ≤[ΔL 2n ], satisfying the requirements of formula (9); ΔL 3n ≤[ΔL 3n ], which satisfies the requirement of formula (10); therefore, the alarm is not triggered.

[0092] The above are one or more embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A method for vertically lifting pipe sections in a submarine tunnel, characterized in that The following steps are involved: S101, vehicle transportation of pipe segments: placing the pipe segments on a special transport vehicle, and transporting the pipe segments to a vertical jacking operation area along a long-distance transport track in a horizontal tunnel that is matched with the special transport vehicle; S102, lifting of pipe section: use hand chain hoist to lift the pipe section until the bottom of the pipe section is higher than the top surface of the track pulley; S103, preliminary adjustment and lowering of the pipe segment's posture: preliminary adjustment of the pipe segment's posture to make it correspond to the mark on the top surface of the track pulley, and lowering the pipe segment to the top surface of the track pulley; S104, rail pulley transportation of the pipe segment: transporting the pipe segment to the top of the jacking device by means of the rail pulley, and then temporarily removing the rail pulley and its matching rail, so that the pipe segment is located on the jacking device; S105, monitoring and control of the pipe section in place: monitoring the position and posture parameters of the pipe section in place and controlling them; S106, butt joint between pipe sections: lift the pipe section by means of a lifting device to butt joint the pipe section with the preceding pipe section; S107, monitoring and control of pipe joint connection: monitoring and controlling the axis consistency parameters of pipe joint connection; S108. Connection between pipe sections: Pipe sections are connected by bolts. After the bolts are tightened, waterproof adhesive material is used to fill the reserved bolt holes.

2. A monitoring method, characterized in that: For the vertical lifting pipe segment hoisting construction method for a submarine tunnel as claimed in claim 1, the monitoring method comprises the following steps: S201. Integrity inspection of pipe joints: Check whether the pipe joints have any appearance defects during transportation and hoisting by combining visual inspection with instrument measurement to ensure that the cross-sectional dimensions and surface flatness of the components meet the requirements; S202, Position coordinate monitoring and control: When the pipe segment of the jacking pipeline is installed in place, the plane position of the pipe segment is monitored by the positioning device and the optical measuring instrument; when constructing the nth pipe segment, the plane position coordinate of the center axis of the pipe segment is obtained by the positioning device as X an and Y an The plane position coordinate of the center axis of the pipe segment is obtained by optical measuring instrument as X bn and Y bn , the measured position coordinate deviation between the positioning device and the optical measuring instrument must satisfy the following expression, otherwise it should be re-monitored: Where [S1] is the measured coordinate deviation limit between the positioning device and the optical measuring instrument; When the measured position coordinate deviation between the positioning device and the optical measuring instrument meets the above requirements, when constructing the nth pipe segment, the measured position coordinate (X n , Y n ) satisfies the following expression: The deviation between the measured position coordinates of the centerline of the pipe segment and the design plane position coordinates should satisfy the following expression: Among them, X0 and Y0 are the plane position coordinates of the center axis of the pipe section required by the design, and [S2] is the deviation limit between the measured position coordinates of the center axis of the pipe section and the designed plane position coordinates; When the deviation between the measured position coordinates of the centerline of the pipe joint and the design plane position coordinates exceeds the limit, the position of the pipe joint should be adjusted until the requirements are met; S203、Segment levelness monitoring and control: When the segment is installed, the levelness should be monitored by a levelness measuring instrument to ensure that the segment remains horizontal so that it can move in the vertical direction during vertical lifting; when constructing the nth segment, the segment levelness θ n It is defined as the angle between the pipe plane and the horizontal plane and satisfies the following expression: i n ≤[θ n ] Among them, [θ n ] is the limit of pipe joint horizontality; When the pipe section levelness θ n If the requirements are not met, the alarm is triggered by the alarm until the pipe joint is adjusted to the horizontal position θ n Only after the requirements are met can the alarm be lifted and vertical jacking construction continue; S204, pipe segment axis consistency monitoring and control: The three-dimensional relative displacement between the installed nth pipe segment and the previous pipe segment is obtained through a three-dimensional joint measuring sensor, including axial relative displacement, radial relative displacement and tangential relative displacement, so as to obtain the relative degree of disengagement, relative rotational misalignment and relative plane misalignment between adjacent pipe segments; the relative degree of disengagement ΔL 1n Satisfies the following expression: ΔL 1n ≤[ΔL 1n ] Among them, the relative degree of disengagement ΔL 1n is the axial relative displacement value obtained by the three-axis joint sensor, [ΔL 1n ] is the relative disconnection degree limit; Relative rotation misalignment ΔL 2n Satisfies the following expression: ΔL 2n ≤[ΔL 2n ] Among them, the relative rotation misalignment degree ΔL 2n It is numerically equal to the ratio of the tangential relative displacement value obtained by the three-way joint sensor to the outer surface radius of the pipe segment, [ΔL 2n ] is the limit of relative rotation misalignment; Relative plane misalignment ΔL 3n Satisfies the following expression: ΔL 3n ≤[ΔL 3n ] Among them, the relative plane misalignment degree ΔL 3n is equal to the radial relative displacement value obtained by the three-way joint sensor, [ΔL 3n ] is the limit of relative plane misalignment; When the relative degree of disengagement between the nth pipe segment installed and the previous pipe segment is ΔL 1n , relative rotation misalignment degree ΔL 2n Or the relative plane misalignment ΔL 3n If the requirements are not met, the alarm is triggered by the alarm until the relative disengagement degree ΔL is reduced by adjusting the position and posture of the pipe joint. 1n , relative rotation misalignment degree ΔL 2n and the relative plane misalignment ΔL 3n Only after all requirements are met can the alarm be lifted and vertical jacking construction continue.

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