Shield tunnel segment advance simulation system and experimental method

Abstract

A shield tunnel segment advance measurement simulation system and experimental method are disclosed. This system allows for convenient control of the tunnel design axis, the assembly posture of the previous ring of segments, and the shield machine's posture. It obtains the advance measurement type, size, and tail clearance of the segment model within the system, better fitting the tunnel design axis and aligning with the shield machine's posture. The system includes a shield machine model, a first ring segment model, a tail ring segment model, a laser emitter, a laser receiver, attitude controllers, an advance measurement scanner, an analyzer, and a frame-type support. Transparent reaction plates are fixedly installed at both longitudinal ends of the frame-type support, with a ring-shaped bracket fixed inside. A set of circumferentially spaced attitude controllers is installed on the right end face of the ring-shaped bracket and on the inner surfaces of the two transparent reaction plates. The advance measurement scanner is fixedly positioned at the center of the inner surface of the right transparent reaction plate. The analyzer controls the attitude controllers to adjust the advance measurement and controls the advance measurement scanner to extend or scan to acquire advance measurement data. The tail clearance value is obtained by analyzing the laser signal from the laser receiver.

Description

Technical Field

[0001] This invention relates to the field of shield tunnel engineering measurement technology, specifically to a shield segment advance measurement simulation system and experimental method. Background Technology

[0002] The support lining structure of a shield tunnel is assembled from precast concrete segments. Typically, the tunnel design axis is not a straight line, but rather consists of vertical curves with ups and downs, horizontal circular curves with left and right turns, and transition curves.

[0003] When a tunnel boring machine (TBM) is about to enter an uphill or downhill section, or make left or right turns, it needs to adjust its attitude in advance, or adjust its attitude on straight sections to smoothly fit the design axis. These situations require not only changes in the TBM's attitude but also coordinated and synchronous adjustments by the tunnel segments. Since the tunnel segments are fixed in position after assembly and their attitude cannot be changed, the commonly used method is to prefabricate segments with a wedge-shaped allowance to accommodate changes in the TBM's attitude and to fit the route. However, in actual engineering, the TBM's attitude often does not conform to the preset value, or the advance of the wedge-shaped segments themselves is insufficient. In such cases, temporary adjustments to the advance of the next ring of segments are necessary to accumulate the advance of each ring and achieve the purpose of segment attitude correction. The method involves measuring the existing advance of the segments on-site, and then calculating the type and value of the advance of the next ring of segments based on the tunnel design axis, the designed advance of the segments, and the current segment attitude. If the vertical projection of the upper end of the tunnel segment exceeds the lower end, the advance type is upward advance. Similarly, the advance is divided into upward advance, downward advance, left advance, and right advance. Based on the calculated advance type and value, corresponding wedges are made and pasted in the appropriate positions, thereby realizing the advance of the next tunnel segment. After accumulating several rings, the attitude of the tunnel segment can be adjusted.

[0004] The type and magnitude of the advance of the next ring of tunnel segments are influenced by the tunnel design axis, the assembly posture of the previous ring of segments, and the posture of the tunnel boring machine (TBM). The influence of the TBM posture is mainly reflected in the tail gap, making it difficult to determine the pattern of the advance. Furthermore, the method of measuring the advance using a hammer ball is inefficient and cannot meet the monitoring requirements in construction sites where frequent monitoring of the current ring of segment advance is needed to calculate the advance of the next ring and determine the wedge bonding scheme.

[0005] Therefore, there is an urgent need for a simulation system that is easy to operate and can simulate the types and sizes of various advance quantities by adjusting the tunnel design axis, the assembly posture of the previous ring of segments, and the posture of the tunnel boring machine, so as to provide a basis for the production and pasting of wedges. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a shield tunnel segment advance simulation system, which can conveniently adjust the tunnel design axis, the assembly posture of the previous ring of segments and the posture of the shield machine, obtain the advance type, size and shield tail gap of the segment model in the system, provide and verify the wedge manufacturing and pasting scheme, obtain more accurate and effective segment advance, better fit the tunnel design axis and meet the posture of the shield machine.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0008] This invention discloses a shield tunnel segment advance measurement simulation system, characterized by comprising a shield machine model, a first ring segment model, a tail ring segment model, a laser emitter, a laser receiver plate, attitude controllers, an advance measurement scanner, an analyzer, and a frame-type support; transparent reaction plates are fixedly installed at both longitudinal ends of the frame-type support, and an annular bracket is fixedly installed inside the frame-type support, with the end face of the annular bracket parallel to the plate surfaces of the two transparent reaction plates; a set of circumferentially spaced attitude controllers are installed on the right end face of the annular bracket and on the inner plate surfaces of the two transparent reaction plates, and the shield machine model, the first ring segment model, and the tail ring segment model are respectively fixedly installed on the inner plate surface of the left transparent reaction plate and the annular bracket through these three sets of attitude controllers. On the right end face and the inner plate of the right transparent reaction plate, in the initial state, the axes of the shield machine model, the first ring segment model, and the tail ring segment model coincide and are perpendicular to the transparent reaction plate surface. A set of circumferentially spaced laser emitters are set on the radial outer walls of the shield machine model and the tail ring segment model. The surface of the laser receiving plate is parallel to the surface of the right transparent reaction plate and is fixedly set on the outside of the right transparent reaction plate. The advance measurement scanner is fixedly set in the center of the inner plate of the right transparent reaction plate. The analyzer controls each attitude controller to adjust the advance measurement, controls the advance measurement scanner to extend or scan to obtain the advance measurement data, and analyzes the laser signal from the laser receiving plate to obtain the tail gap value.

[0009] Another technical problem to be solved by the present invention is to provide an experimental method using the above-mentioned shield tunnel segment advance simulation system, the method comprising the following steps:

[0010] S1. Determine the scale and dimensions of the shield machine model, the first ring segment model, and the tail ring segment model, and fix the ring bracket in the frame support. The ring bracket is located between the installation positions of the shield machine model and the first ring segment model.

[0011] S2. Install the three sets of attitude controllers on the right end face of the ring bracket and the inner plate of the transparent reaction plates on both sides, respectively.

[0012] S3. Install the two sets of laser emitters on the radial outer walls of the shield machine model and the tail ring segment model respectively, and align the shield machine model, the first ring segment model and the tail ring segment model with the attitude controllers of the corresponding sets, and finally fix their positions with their vacuum suction cups.

[0013] S4. Turn on each laser emitter, place the laser receiver plate outside the side transparent reaction plate, and adjust it to a position that can receive the laser beam;

[0014] S5. Based on the preset shield machine posture and tunnel design axis, adjust each set of posture controllers to change the posture of the shield machine model, the first ring segment model and the tail ring segment model, and coordinate the control of the two sets of posture controllers on the right so that the first ring segment model generates a lead amount according to the assembly posture of the tail ring segment model.

[0015] S6. Control the telescopic rod of the advanced measurement scanner to bring the scanning lens to the edge of the first ring segment model to be monitored, turn on the positioning laser irradiator, and control the adjustment of the scanning lens to align with the edge of the first ring segment model. The scanning lens performs a 360° scan and image, and transmits the cloud image to the analyzer for processing.

[0016] S7. The analyzer receives relevant data from the laser receiver, the advance scanner, and the attitude controller, and analyzes the current tunnel design axis, the advance amount of the first ring segment model under the shield attitude, and the shield tail gap, providing a basis for the production and pasting of the next ring segment wedges.

[0017] S8. Using the shield tail ring as the first ring and the first ring as the next ring segment, control the attitude controller at the shield tail ring segment model to adjust it to the attitude of the first ring segment model in step S5, control the attitude controller at the first ring segment model to adjust it to the preset attitude of the next ring segment, paste the made wedge to the side of the first ring segment model close to the shield tail ring segment model, adjust the leading-edge scanner, repeat step S7, and verify the rationality of wedge making and pasting.

[0018] S9. Remove the wedge and repeat steps S5 to S8 to obtain the advance law of the first ring segment model under different postures.

[0019] The beneficial effects of this invention are: it enables convenient control of the tunnel design axis, the assembly posture of the previous ring segment, and the shield machine posture; it obtains the type, size, and tail clearance of the segment model advance in the system; it provides and verifies the wedge fabrication and pasting scheme; it yields more accurate and effective segment advance; it better fits the tunnel design axis and conforms to the shield machine posture; it obtains the gap between the shield shell and the segment at the tail of the shield by using a laser emitter and a laser receiver plate; it can simultaneously consider the influence of the tail clearance control requirements on the segment advance; it achieves 360° scanning imaging through an advance detection instrument to monitor the segment model advance, improving measurement accuracy and efficiency; it receives relevant data from the laser receiver plate, advance scanner, and posture controller through an analyzer and determines whether the advance generated by the first ring segment model is the design advance, providing a basis for the fabrication and pasting of the wedges for the next ring segment; it further verifies the rationality of wedge fabrication and pasting by using the tail ring as the first ring and the first ring as the next ring segment; and it obtains the advance pattern of the first ring segment model under different shield machine model postures and tail ring segment model assembly postures by repeating the corresponding steps. Attached Figure Description

[0020] This instruction manual includes the following five figures:

[0021] Figure 1 This is a three-dimensional schematic diagram of a shield tunnel segment advance measurement simulation system according to the present invention;

[0022] Figure 2 This is a three-dimensional schematic diagram from another perspective of the shield tunnel segment advance measurement simulation system of the present invention;

[0023] Figure 3 This is a cross-sectional view of a shield tunnel segment advance measurement simulation system according to the present invention;

[0024] Figure 4 This is a detailed drawing of the laser receiving board in a shield tunnel segment advance measurement simulation system of the present invention;

[0025] Figure 5 This is a flowchart illustrating an experimental method for a shield tunnel segment advance simulation system according to the present invention.

[0026] The attached diagram shows the names of the main components and their corresponding markings: laser emitter 10, laser receiver plate 20, advanced measurement scanner 30, scanning lens 31, positioning laser irradiator 32, telescopic rod 33, analyzer 40, ring support 50, attitude controller 60, vacuum suction cup 61, electrically controlled telescopic rod 62, tunnel boring machine model 70, first ring segment model 80, tail ring segment model 90, transparent reaction plate 100, frame support 110. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings.

[0028] The present invention addresses the current inability to accurately measure the advance of tunnel segments caused by design axis, shield posture, and the assembly posture of the previous ring of segments, as well as the poor wedge bonding effect, which results in the tunnel segments failing to fit the tunnel design axis well, causing misalignment and flared ends in the tunnel segments.

[0029] Reference Figures 1 to 4 The present invention provides a shield tunnel segment advance measurement simulation system, comprising a shield machine model 70, a first ring segment model 80, a tail ring segment model 90, a laser emitter 10, a laser receiver plate 20, an attitude controller 60, an advance measurement scanner 30, an analyzer 40, and a frame support 110. Transparent reaction plates 100 are fixedly installed at both longitudinal ends of the frame support 110, and annular brackets 50 are fixedly installed inside the frame support 110. The end faces of the annular brackets 50 are parallel to the plate surfaces of the two transparent reaction plates 100. A set of circumferentially spaced attitude controllers 60 is installed on the right end face of the annular support 50 and on the inner plate surfaces of the two transparent reaction plates 100. These three sets of attitude controllers 60 fix the tunnel boring machine model 70, the first ring segment model 80, and the tail ring segment model 90 onto the inner plate surfaces of the left transparent reaction plate 100, the right end face of the annular support 50, and the right transparent reaction plate 100, respectively. In the initial state, the axes of the tunnel boring machine model 70, the first ring segment model 80, and the tail ring segment model 90 coincide and are perpendicular to the surface of the transparent reaction plate 100. A set of circumferentially spaced laser emitters 10 is installed on the radial outer wall of the tunnel boring machine model 70 and the tail ring segment model 90. The surface of the laser receiving plate 20 is parallel to the surface of the right transparent reaction plate 100 and is fixedly installed on the outside of the right transparent reaction plate 100. The advanced measurement scanner 30 is fixedly installed at the center of the inner plate surface of the right transparent reaction plate 100. The analyzer 40 controls each attitude controller 60 to adjust the lead amount, controls the lead amount scanner 30 to extend or scan to obtain lead amount data, and analyzes the laser signal from the laser receiver 20 to obtain the shield tail gap value.

[0030] Reference Figure 3The attitude controller 60 adjusts the attitudes of the tunnel boring machine (TBM) model 70, the first ring segment model 80, and the tail ring segment model 90 to simulate TBM attitude changes, segment advance, and the assembly attitude of the previous ring segment. The advance scanner 30 acquires segment cloud images and transmits them to the analyzer 40. The laser receiver 20 receives the laser emitted by the laser transmitter 10 and transmits the data to the analyzer 40, obtaining the segment advance and tail gap respectively. This allows for analysis and verification of the wedge bonding scheme for the next ring segment, ultimately yielding a segment advance that better matches the tunnel alignment. Therefore, this invention can conveniently control the tunnel design axis, the assembly attitude of the previous ring segment, and the TBM attitude, obtaining the advance type, size, and tail gap of the segment models in the system. It also provides and verifies the wedge manufacturing and bonding scheme, resulting in a more accurate and effective segment advance, better fitting the tunnel design axis, and conforming to the TBM attitude.

[0031] Reference Figure 1 The shield machine model 70, the first ring segment model 80, and the tail ring segment model 90 are made of lightweight materials in a certain proportion. The first ring segment model 80 and the tail ring segment model 90 are standard rings or turning rings with wedge-shaped amounts, which can accommodate various design axes of the tunnel.

[0032] exist Figures 1 to 3 In the illustrated embodiment, four attitude controllers 60 are arranged at 90° intervals around the right end face of the annular support 50 and the inner plates of the two transparent reaction plates 100 on both sides. The positions of the attitude controllers 60 in these three groups correspond to each other and are used to control the attitude and advance of the corresponding models. The attitude controller 60 consists of a vacuum suction cup 61 and an electrically controlled telescopic rod 62. The rear end of the electrically controlled telescopic rod 62 is fixedly connected to the inner plates of the two transparent reaction plates 100 and the right end face of the annular support 50. The vacuum suction cup 61 is installed at the front end of the electrically controlled telescopic rod 62 and is attracted to the longitudinal end face of the shield machine model 70, the first ring segment model 80, or the tail ring segment model 90. The analyzer 40 achieves attitude control by adjusting the extension and retraction length of the electrically controlled telescopic rod 62, adjusts the shield machine model 70 to simulate the attitude changes of the shield machine, adjusts the first ring segment model 80 to simulate the advance of the current segment ring, and adjusts the tail ring segment model 90 to simulate the assembly attitude of the previous ring segment.

[0033] exist Figures 1 to 3In the illustrated embodiment, each of the two sets of laser emitters 10 mounted on the radial outer walls of the tunnel boring machine model 70 and the tail ring segment model 90 includes eight laser emitters 10 arranged at equal angles. These two sets of laser emitters 10 emit laser beams of different colors, which illuminate the laser receiving plate 20. The laser receiving plate 20 displays the laser points and converts them into coordinate signals, which are then transmitted to the analyzer 40. If the laser receiving plate 20 displays all the laser points, a gap exists between the tunnel boring machine model 70 and the tail ring segment model 90, and the specific value can be obtained through the analyzer 40. If some laser points emitted by the tunnel boring machine model 70 are missing, it is determined that the tail gap is zero, indicating that the two are mutually compressing.

[0034] Reference Figure 2 The advanced measurement scanner 30 includes a scanning lens 31, a positioning laser irradiator 32, and a telescopic rod 33. The rear end of the telescopic rod 33 is fixedly connected to the inner surface of the right-side transparent reaction plate 100. The scanning lens 31 and the positioning laser irradiator 32 are fixedly installed at the front end of the telescopic rod 33. The analyzer 40 controls the extension and retraction length of the telescopic rod 33, causing the scanning lens 31 to move to the edge of the first ring segment model 80 to be monitored. When the laser emitted by the positioning laser irradiator 32 illuminates the edge point, it can be determined that the scanning lens 31 is aligned with the edge. The scanning lens 31 rotates 360° to scan the first ring segment model 80 to be monitored for one revolution and transmits the cloud image to the analyzer 40 for processing.

[0035] Reference Figures 1 to 5 The present invention provides an experimental method for a shield tunnel segment advance simulation system, comprising the following steps:

[0036] S1. Determine the scale and dimensions of the shield machine model 70, the first ring segment model 80, and the tail ring segment model 90. Fix the ring bracket 50 inside the frame support 110. The ring bracket 50 is located between the installation positions of the shield machine model 70 and the first ring segment model 80.

[0037] This step is to prepare for the experiment. Based on the determined dimensions of the tunnel boring machine and segments and their reduction ratio, the dimensions of other experimental materials are determined. The position of the tunnel boring machine model 70 is roughly determined. The ring bracket 50 is fixed between the installation positions of the tunnel boring machine model 70 and the first ring segment model 80, and the transparent reaction plates 100 on both sides are vertically fixed to the frame support 110.

[0038] S2. Install the three sets of attitude controllers 60 on the right end face of the ring bracket 50 and the inner plate surface of the transparent reaction plates 100 on both sides respectively.

[0039] With the center of the ring bracket 50 as the center point, a group of four attitude controllers 60 are installed and fixed in a 90° ring on the transparent reaction plate 100 and the ring bracket 50. The electric telescopic rod 62 is shortened by the analyzer 40 to leave space for the model installation. One end of the advanced measurement scanner 30 is fixed to the center point of the inner plate surface of the transparent reaction plate 100.

[0040] S3. Install the two sets of laser emitters 10 on the radial outer walls of the shield machine model 70 and the tail ring segment model 90 respectively, and align the shield machine model 70, the first ring segment model 80 and the tail ring segment model 90 with the corresponding set of attitude controllers 60, and finally fix their positions with their vacuum suction cups 61.

[0041] Two different colored laser emitters 10 are installed in groups of eight in a ring at a 45° angle on the radial outer wall of the shield machine model 70 and the tail ring segment model 90. After aligning the shield machine model 70, the first ring segment model 80 and the tail ring segment model 90 with the corresponding attitude controllers 60, the vacuum suction cup 61 is used to extract the vacuum and fix the position.

[0042] S4. Turn on each laser emitter 10, place the laser receiver 20 outside the side transparent reaction plate 100, and adjust it to a position that can receive the laser beam.

[0043] S5. Based on the preset shield machine posture and tunnel design axis, adjust the posture controllers 60 of each group to change the posture of the shield machine model 70, the first ring segment model 80 and the tail ring segment model 90, and coordinate the control of the two groups of posture controllers 60 on the right so that the first ring segment model 80 generates a lead amount according to the assembly posture of the tail ring segment model 90.

[0044] S6. Control the telescopic rod 33 of the advanced measurement scanner 30 to bring the scanning lens 31 to the edge of the first ring tube segment model 80 to be monitored, turn on the positioning laser irradiator 32, and control the adjustment of the scanning lens (31) to align with the edge of the first ring tube segment model 80. The scanning lens 31 performs 360° scanning imaging and transmits the cloud image to the analyzer 40 for processing.

[0045] S7 and the analyzer 40 receive relevant data from the laser receiver 20, the advance measurement scanner 30, and the attitude controller 60. They analyze the data to obtain the advance measurement and shield tail gap of the first ring segment model 80 under the current tunnel design axis and shield attitude, providing a basis for the fabrication and pasting of the next ring segment wedges.

[0046] Specifically, the laser receiving plate 20 obtains the shield tail gap, the advance measurement scanner 30 obtains the advance measurement of the first ring segment model 80, and the attitude controller 60 obtains the attitude information of the tunnel boring machine model 70 and the shield tail ring segment model 90. The first ring segment model 80 needs to match the assembly attitude of the shield tail ring segment model 90, and the shield tail gap problem caused by the change of the tunnel boring machine attitude needs to be considered. The analyzer 40 determines whether the advance measurement generated by the first ring segment model 70 due to the combined effect of the two is the design advance measurement, and provides a basis for the production and pasting of the next ring segment wedge.

[0047] S8. Using the tail ring as the first ring and the first ring as the next ring segment, control the attitude controller 60 at the tail ring segment model 90 to adjust it to the attitude of the first ring segment model 80 in step S5. Control the attitude controller 60 at the first ring segment model 80 to adjust it to the preset attitude of the next ring segment. Paste the made wedge onto the side of the first ring segment model 80 near the tail ring segment model 90. Adjust the lead-ahead scanner 30 and repeat step S7 to verify the rationality of the wedge making and pasting.

[0048] S9. Remove the wedge and repeat steps S5 to S8 to obtain the 80 advance rate law of the first ring segment model under different postures.

[0049] The specific embodiments described above further illustrate the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. 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 shield tunnel segment advance measurement simulation system, characterized in that: The system includes a tunnel boring machine model (70), a first ring segment model (80), a tail ring segment model (90), a laser emitter (10), a laser receiver plate (20), an attitude controller (60), a lead-in scanner (30), an analyzer (40), and a frame support (110). Transparent reaction plates (100) are fixedly installed at both longitudinal ends of the frame support (110), and an annular bracket (50) is fixedly installed inside it. The end face of the annular bracket (50) is parallel to the plate surfaces of the two transparent reaction plates (100). A set of circumferentially spaced attitude controllers (60) is installed on the right end face of the annular bracket (50) and on the inner plate surfaces of the two transparent reaction plates (100). These three attitude controllers (60) are used to fix the tunnel boring machine model (70), the first ring segment model (80), and the tail ring segment model (90) onto the inner plate surface of the left transparent reaction plate (100) and the annular bracket (50). On the right end face and the inner plate of the right transparent reaction plate (100), in the initial state, the axes of the shield machine model (70), the first ring segment model (80), and the tail ring segment model (90) coincide and are perpendicular to the plate surface of the transparent reaction plate (100); a set of circumferentially spaced laser emitters (10) are set on the radial outer wall of the shield machine model (70) and the tail ring segment model (90); the plate surface of the laser receiving plate (20) is parallel to the plate surface of the right transparent reaction plate (100) and is fixedly set on the outside of the right transparent reaction plate (100); the advance measurement scanner (30) is fixedly set in the center of the inner plate surface of the right transparent reaction plate (100); the analyzer (40) controls each attitude controller (60) to adjust the advance measurement, controls the advance measurement scanner (30) to extend or scan to obtain the advance measurement data, and analyzes the laser signal from the laser receiving plate (20) to obtain the tail gap value.

2. The shield tunnel segment advance simulation system as described in claim 1, characterized in that: The shield machine model (70), the first ring segment model (80) and the tail ring segment model (90) are made of lightweight materials in a certain proportion. The first ring segment model (80) and the tail ring segment model (90) are standard rings or turning rings with wedge-shaped amount.

3. The shield tunnel segment advance simulation system as described in claim 1, characterized in that: Four attitude controllers (60) are set at 90° intervals around the right end face of the ring bracket (50) and the inner plate of the transparent reaction plates (100) on both sides. The positions of the attitude controllers (60) in the three groups are corresponding.

4. The shield tunnel segment advance simulation system as described in claim 3, characterized in that: The attitude controller (60) consists of a vacuum suction cup (61) and an electrically controlled telescopic rod (62). The rear end of the electrically controlled telescopic rod (62) is fixedly connected to the inner surface of the transparent reaction plates (100) on both sides and the right end face of the ring bracket (50). The vacuum suction cup (61) is installed at the front end of the electrically controlled telescopic rod (62) and is attracted to the longitudinal end face of the shield machine model (70), the first ring segment model (80), or the shield tail ring segment model (90).

5. The shield tunnel segment advance simulation system as described in claim 1, characterized in that: The two sets of laser emitters (10) set on the radial outer wall of the shield machine model (70) and the shield tail ring segment model (90) each include 8 laser emitters (10) with equal angle rings attached, and the two sets of laser emitters (10) emit laser beams of different colors.

6. The shield tunnel segment advance simulation system as described in claim 1, characterized in that: The advanced measurement scanner (30) includes a scanning lens (31), a positioning laser irradiator (32), and a telescopic rod (33). The rear end of the telescopic rod (33) is fixedly connected to the inner surface of the right transparent reaction plate (100), and the scanning lens (31) and the positioning laser irradiator (32) are fixedly installed at the front end of the telescopic rod (33).

7. An experimental method for simulating the advance measurement of tunnel segments as described in any one of claims 1 to 6, comprising the following steps: S1. Determine the scale and dimensions of the shield machine model (70), the first ring segment model (80) and the tail ring segment model (90). Fix the ring bracket (50) inside the frame support (110). The ring bracket (50) is located between the installation positions of the shield machine model (70) and the first ring segment model (80). S2. Install the three sets of attitude controllers (60) on the right end face of the ring bracket (50) and the inner plate surface of the transparent reaction plates (100) on both sides respectively; S3. Install the two sets of laser emitters (10) on the radial outer walls of the shield machine model (70) and the shield tail ring segment model (90), respectively, and align the shield machine model (70), the first ring segment model (80), and the shield tail ring segment model (90) with the corresponding set of attitude controllers (60), and fix their positions with their vacuum suction cups (61); S4. Turn on each laser emitter (10), place the laser receiver (20) outside the side transparent reaction plate (100), and adjust it to a position that can receive the laser beam; S5. According to the preset shield machine posture and tunnel design axis, adjust each group of posture controllers (60) to change the posture of shield machine model (70), first ring segment model (80) and shield tail ring segment model (90), and coordinate the control of the two groups of posture controllers (60) on the right so that the first ring segment model (80) generates a lead amount according to the assembly posture of the shield tail ring segment model (90). S6. Control the telescopic rod (33) of the advanced measurement scanner (30) to bring the scanning lens (31) to the edge of the first ring segment model (80) to be monitored, turn on the positioning laser irradiator (32), and control the adjustment of the scanning lens (31) to align with the edge of the first ring segment model (80). The scanning lens (31) performs 360° scanning imaging and transmits the cloud image to the analyzer (40) for processing. S7. The analyzer (40) receives relevant data from the laser receiver (20), the advance measurement scanner (30), and the attitude controller (60), and analyzes and obtains the advance measurement and shield tail gap of the first ring segment model (80) under the current tunnel design axis and shield attitude, providing a basis for the production and pasting of the next ring segment wedge; S8. Using the tail ring as the first ring and the first ring as the next ring segment, control the attitude controller (60) at the tail ring segment model (90) to adjust it to the attitude of the first ring segment model (80) in step S5. Control the attitude controller (60) at the first ring segment model (80) to adjust it to the preset attitude of the next ring segment. Paste the made wedge to the side of the first ring segment model (80) close to the tail ring segment model (90). Adjust the leading-ahead scanner (30). Repeat step S7 to verify the rationality of wedge making and pasting. S9. Remove the wedge and repeat steps S5 to S8 to obtain the advance law of the first ring segment model (80) under different postures.

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