Shield shell connecting structure of shield tunneling ground interface and connecting method thereof

Abstract

The present application relates to a kind of shield shell connecting structure of shield ground butt joint part and its connecting method, including first shield machine, second shield machine, connecting steel plate, segment and cutter disc reinforcing area, first shield machine includes first shield machine shield shell and first shield machine cutter disc, second shield machine includes second shield machine shield shell and second shield machine cutter disc, first reference point is arranged in the inside of first shield machine, second reference point is arranged in the inside of second shield machine, first reference point and second reference point position can be realized by local punching in cutter disc reinforcing area between reference point coordinate measurement;Its shield shell butt joint steel plate is in-plant pressed forming after according to the collected shield shell inner arc surface shape data is welded in situ, avoid local adjustment to shield connection steel plate in situ, reduce construction difficulty, improve construction efficiency ensure that shield shell connection steel plate and connecting part shield shell are closely fitted, avoid the risk of structural safety and leakage water caused by not closely fitted between steel plate and shield shell.

Description

Technical Field

[0001] This invention relates to shield tunneling underground docking technology, specifically to a shield shell connection structure and connection method for the underground docking part of a shield tunnel. Background Technology

[0002] During the underground docking of tunnel boring machines (TBMs), the dismantling of the TBMs and the construction of the docking lining and waterproofing structures are carried out under the protection of the shield shells. The shield shell connection effect at the docking point is crucial to construction safety and the permanent waterproofing effect at the docking point. Existing methods involve directly welding a shield shell connecting steel plate to the connection point between the first and second TBM shield shells. This method fails to consider the misalignment and deflection of the shield shells caused by axial errors during docking and shield shell deformation during tunneling, resulting in a lack of tight fit at the shield shell connection point, leading to difficulties in on-site connection and large gaps at the connection.

[0003] To address the aforementioned issues, adjusting the shape of the shield connecting steel plate on-site can barely meet the connection requirements at the docking points. However, due to the large thickness of the shield connecting steel plate, on-site adjustment is inefficient and difficult, making it hard to adjust it to fit perfectly with the inner arc surface of the shield. The connection effect fails to meet design requirements, and the gap at the connection point remains difficult to fit, posing significant risks to structural safety and water leakage. Summary of the Invention

[0004] This invention provides a shield shell connection structure and connection method for the underground docking part of a shield tunnel, ensuring that the shield shell connecting steel plate matches the outer shape of the inner arc surface of the shield shell, achieving a tight fit between the shield shell connecting steel plate and the shield shell connection area, avoiding on-site adjustments to the shield shell connecting steel plate, and improving construction efficiency.

[0005] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0006] A shield shell connection structure for the underground docking section of a tunnel boring machine (TBM) includes a first TBM, a second TBM, a connecting steel plate, segments, and a cutterhead reinforcement area. The first TBM includes a first TBM shield shell and a first TBM cutterhead, and the second TBM includes a second TBM shield shell and a second TBM cutterhead.

[0007] As a preferred embodiment of the shield shell connection structure of the shield tunneling underground docking part of the present invention, a first reference point is set inside the first shield machine, and a second reference point is set inside the second shield machine. The positions of the first reference point and the second reference point can be measured by locally drilling holes in the cutterhead reinforcement area to achieve coordinate measurement between the reference points.

[0008] To solve the above-mentioned technical problems, according to another aspect of the present invention, the present invention provides the following technical solution:

[0009] A method for connecting the shield shell connection structure at the underground docking point of the above-mentioned shield tunneling machine includes the following steps:

[0010] Step 1: After the tunnel boring machine has tunneled to the docking area and completed the reinforcement of the soil and cutterhead chamber in the docking area, a first reference point (11) is set inside the first tunnel boring machine and a second reference point (21) is set inside the second tunnel boring machine.

[0011] Step 2: Using the first reference point (11) and the second reference point (21), measure the inner arc surface shape of the shield shell of the two shield machines that need to be welded, and obtain the surface coordinates S1 of the inner surface of the shield shell (12) of the first shield machine relative to the first reference point (11) and the surface coordinates S2 of the inner surface of the shield shell (22) of the second shield machine relative to the second reference point (21).

[0012] Step 3: Drill holes (6) in the reinforced area (5) of the cutter head, and use the drilled holes (6) to measure the coordinates between the first reference point (11) and the second reference point (21) to obtain the coordinates S3 of the second reference point (21) relative to the first reference point (11).

[0013] Step 4: Using the measured coordinates S3 of the first reference point (11) relative to the second reference point (21), the surface coordinates of the inner surface of the shield shell (22) of the second tunnel boring machine relative to the first reference point (11) can be calculated.

[0014] Step 5: Using the surface coordinates S1 of the inner surface of the first shield shell (12) and the inner surface of the second shield shell (22) relative to the first reference point (11) and Generate the shape data of the inner surface of the first shield shell (12) and the inner surface of the second shield shell (22). Use this data to manufacture the connecting steel plate (3) in the factory so that the connecting steel plate is completely attached to the inner surface of the first shield shell (12) and the inner surface of the second shield shell (22).

[0015] Step Six: The cutterhead is dismantled in sections, and the corresponding reinforcement is broken to form the cutterhead reinforcement area 51 that has been chiseled out in sections. Then, the connecting steel plates 3 that have been processed in the factory are hoisted to the corresponding positions on the shield shell and welded piece by piece to achieve the shield shell connection in the docking area.

[0016] In a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to the present invention, wherein: in step two, the surface coordinate S1 of the inner surface of the shield shell (12) of the first shield machine relative to the first reference point (11) is:

[0017]

[0018] As a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to the present invention, wherein: the surface coordinate S2 of the inner surface of the second shield machine shield shell (22) relative to the second reference point (21) in step two is:

[0019]

[0020] In a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to the present invention, the coordinate S3 of the second reference point (21) relative to the first reference point (11) in step three is:

[0021] S3 = {x3y3z3}.

[0022] As a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to the present invention, wherein: in step four, the surface coordinates of the inner surface of the shield shell (22) of the second shield machine relative to the first reference point (11) are calculated. for:

[0023]

[0024] As a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to the present invention, the measurement of the surface coordinates can be achieved using a measuring instrument, and the measuring instrument should be able to measure quickly and accurately in prism-free mode.

[0025] In a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine as described in this invention, the measuring instrument is a total station.

[0026] As a preferred embodiment of the connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to the present invention, the connecting steel plate is formed in a factory by measuring the outer shape data of the inner surface of the shield shell to ensure a tight fit with the inner surface of the shield tail.

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

[0028] (1) The shield shell docking method for the underground docking part of the shield tunnel provided by the present invention is that the shield shell connecting steel plate is pressed and formed in the processing plant according to the inner arc surface shape of the shield shell, which avoids the need for local adjustment of the shield connecting steel plate on site, reduces the construction difficulty and improves the construction efficiency.

[0029] (2) The shield shell docking method for the underground docking part of the shield tunnel provided by the present invention is that the shield shell docking steel plate is pressed and formed in the factory according to the collected inner arc surface shape data of the shield shell and then welded on site, which ensures that the shield shell connecting steel plate and the shield shell at the docking part are tightly fitted, and avoids the structural safety and water leakage risks caused by the poor fit between the steel plate and the shield shell. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the steel plate connection in the docking area of ​​the present invention;

[0032] Figure 2 This invention utilizes base points to measure the coordinates of the inner arc surface of the shield shell of two tunnel boring machines.

[0033] Figure 3 The coordinates of the second reference point relative to the first reference point for measuring local drilling in the cutter head area of ​​this invention;

[0034] Figure 4 The present invention involves removing the reinforced area of ​​the cutterhead in sections and welding the connecting steel plates of the shield shell.

[0035] Explanation of icon numbers:

[0036] 11-First reference point; 12-First shield shell of tunnel boring machine; 13-Cutoff head of first tunnel boring machine; 21-Second reference point; 22-Second shield shell of tunnel boring machine; 23-Cutoff head of second tunnel boring machine; 3-Connecting steel plate; 4-Segment; 5-Cutoff head reinforcement area; 51-Cutoff head reinforcement area removed in sections; 6-Hole.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions described below in conjunction with the embodiments will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0041] like Figure 1-4 As shown, in a specific implementation, the present invention provides a shield shell connection structure for the underground docking section of a tunnel boring machine (TBM), including a first TBM, a second TBM, a connecting steel plate 3, tunnel segments 4, and a cutterhead reinforcement area 5. The first TBM includes a first TBM shield shell 12 and a first TBM cutterhead 13, and the second TBM includes a second TBM shield shell 22 and a second TBM cutterhead 23. A first reference point 11 is set inside the first TBM, and a second reference point 21 is set inside the second TBM. The positions of the first reference point 11 and the second reference point 21 should be such that coordinate measurement between the reference points can be achieved by locally drilling holes in the cutterhead reinforcement area 5, so as to realize the rapid and effective connection of the shield shells of the two TBMs at the docking section and ensure that the shield shell docking section fits tightly.

[0042] like Figure 1-4 As shown, in a specific embodiment of the present invention, a connection method for the shield shell connection structure at the underground docking point of a tunnel boring machine is also provided, including the following steps:

[0043] Step 1: After the tunnel boring machine has tunneled to the docking area and completed the reinforcement of the soil and cutterhead chamber in the docking area, set the first reference point 11 inside the first tunnel boring machine and set the second reference point 21 inside the second tunnel boring machine.

[0044] Step 2: Using the first reference point 11 and the second reference point 21, measure the inner arc surface shape of the shield shell of the two shield machines at the welding parts, and obtain the surface coordinates S1 of the inner surface of the shield shell 12 of the first shield machine relative to the first reference point 11, and the surface coordinates S2 of the inner surface of the shield shell 22 of the second shield machine relative to the second reference point 21.

[0045] Step 3: Drill holes 6 in the tool head reinforcement area 5 locally, and use the drilled holes 6 to measure the coordinates between the first reference point 11 and the second reference point 21 to obtain the coordinates S3 of the second reference point 21 relative to the first reference point 11.

[0046] Step 4: Using the measured coordinates S3 of the first reference point 11 relative to the second reference point 21, the surface coordinates of the inner surface of the shield shell 22 of the second tunnel boring machine relative to the first reference point 11 can be calculated.

[0047] Step 5: Using the surface coordinates S1 and S2 of the inner surface of the first shield shell 12 and the inner surface of the second shield shell 22 relative to the first reference point 11, Generate the shape data of the inner surface of the first shield shell 12 and the inner surface of the second shield shell 22. Use this data to manufacture the connecting steel plate 3 in the factory so that the connecting steel plate is completely attached to the inner surface of the first shield shell 12 and the inner surface of the second shield shell 22.

[0048] Step Six: The cutterhead is dismantled in sections, and the corresponding reinforcement is broken to form the cutterhead reinforcement area 51 that has been chiseled out in sections. Then, the connecting steel plates 3 that have been processed in the factory are hoisted to the corresponding positions on the shield shell and welded piece by piece to achieve the shield shell connection in the docking area.

[0049] In step two, the surface coordinates S1 of the inner surface of the shield shell 12 of the first tunnel boring machine relative to the first reference point 11 and the surface coordinates S2 of the inner surface of the shield shell 22 of the second tunnel boring machine relative to the second reference point 21 are respectively:

[0050]

[0051] In step three, the coordinates S3 of the second reference point 21 relative to the first reference point 11 are:

[0052] S3 = {x3y3z3}.

[0053] In step four, the surface coordinates of the inner surface of the shield shell 22 of the second tunnel boring machine relative to the first reference point 11 are calculated. for:

[0054]

[0055] The measurement of the surface coordinates can be achieved using measuring instruments such as a total station, and the corresponding measuring instruments should be able to measure quickly and accurately in prism-free mode.

[0056] The connecting steel plate is formed in the factory using the measured shape data of the inner surface of the shield shell, ensuring a tight fit with the inner surface of the shield tail.

[0057] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for connecting the shield shell connection structure at the underground docking point of a tunnel boring machine, characterized in that, The shield shell connection structure at the underground docking point of the shield tunnel includes a first shield machine, a second shield machine, a connecting steel plate (3), a segment (4), and a cutterhead reinforcement area (5). The first shield machine includes a first shield machine shield shell (12) and a first shield machine cutterhead (13). The second shield machine includes a second shield machine shield shell (22) and a second shield machine cutterhead (23). A first reference point (11) is set inside the first shield machine, and a second reference point (21) is set inside the second shield machine (2). The positions of the first reference point (11) and the second reference point (21) can be measured by drilling holes in the cutterhead reinforcement area (5). The connection method includes the following steps: Step 1: After the tunnel boring machine has advanced to the docking area and completed the reinforcement of the soil and cutterhead chamber in the docking area, a first reference point (11) is set inside the first tunnel boring machine and a second reference point (21) is set inside the second tunnel boring machine. Step 2: Using the first reference point (11) and the second reference point (21), measure the inner arc surface shape of the shield shell of the two shield machines that need to be welded, and obtain the surface coordinates S1 of the inner surface of the shield shell (12) of the first shield machine relative to the first reference point (11) and the surface coordinates S2 of the inner surface of the shield shell (22) of the second shield machine relative to the second reference point (21). Step 3: Drill holes (6) in the tool head reinforcement area (5), and use the drilled holes (6) to measure the coordinates between the first reference point (11) and the second reference point (21) to obtain the coordinates S3 of the second reference point (21) relative to the first reference point (11); Step 4: Using the measured coordinates S3 of the first reference point (11) relative to the second reference point (21), the surface coordinates of the inner surface of the shield shell (22) of the second tunnel boring machine relative to the first reference point (11) can be calculated. ; Step 5: Utilize the surface coordinates of the inner surfaces of the first shield shell (12) and the second shield shell (22) relative to the first reference point (11). and Generate the shape data of the inner surface of the first shield shell (12) and the inner surface of the second shield shell (22). Use this data to manufacture the connecting steel plate (3) in the factory so that the connecting steel plate is completely attached to the inner surface of the first shield shell (12) and the inner surface of the second shield shell (22). Step 6: The cutterhead is dismantled in sections and the corresponding reinforcement is broken to form the cutterhead reinforcement area (51) that is chiseled out in sections. Then, the connecting steel plates (3) processed in the factory are hoisted to the corresponding positions of the shield shell and welded piece by piece to realize the shield shell connection in the docking area.

2. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 1, characterized in that, In step two, the surface coordinates of the inner surface of the shield shell (12) of the first tunnel boring machine relative to the first reference point (11) are... for: 。 3. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 2, characterized in that, In step two, the surface coordinates of the inner surface of the shield shell (22) of the second tunnel boring machine relative to the second reference point (21) are... for: 。 4. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 3, characterized in that, The coordinates of the second reference point (21) relative to the first reference point (11) in step three. for: 。 5. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 4, characterized in that, In step four, the surface coordinates of the inner surface of the shield shell (22) of the second tunnel boring machine relative to the first reference point (11) are calculated. for: 。 6. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 5, characterized in that, The surface coordinates can be measured using a measuring instrument, which should be able to measure quickly and accurately in prism-free mode.

7. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 6, characterized in that, The measuring instrument is a total station.

8. The connection method for the shield shell connection structure at the underground docking point of the shield tunneling machine according to claim 6 or 7, characterized in that, The connecting steel plate is formed in the factory using the measured shape data of the inner surface of the shield shell, ensuring a tight fit with the inner surface of the shield tail.

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