A slurry shield mud pipe support device

Abstract

The utility model relates to the technical field of slurry shield construction, specifically relates to a slurry shield slurry pipe support device, including support main stem, first support rod and second support rod, support main stem is used for setting along the pipe piece inner camber surface ring direction, one end of first support rod is connected with support main stem, and the other end is equipped with the first limiting rod for the outer limit of slurry pipe, and the bottom of first support rod is connected with support main stem through the inclined support, second support rod is located above first support rod, one end of second support rod is connected with support main stem, and the other end is equipped with the second limiting rod for the outer limit of slurry pipe, and the third limiting rod for the inner limit of slurry pipe is equipped between second support rod and first support rod, and the third limiting rod is connected first support rod and second support rod respectively, the utility model can realize the technical effect that support is set in the horizontal state position of first support rod and second support rod, reduces the negative influence of slurry pipe to support and surrounding structure, and support installation stability is high.

Description

Technical Field

[0001] This utility model relates to the field of slurry shield tunneling technology, and in particular to a slurry pipe support device for slurry shield tunneling. Background Technology

[0002] With the development of tunnel boring machine (TBM) construction technology, slurry balance TBMs, with their excellent pressure control performance, have been widely used in tunnel projects involving crossing rivers and seas, as well as in projects with high requirements for settlement. Slurry balance TBMs are characterized by using pipeline pumps to remove slag. During the tunneling cycle, as the shield advances, the slurry pipes on the TBM continuously extend. When they reach a certain length (generally 6 meters), reaching their elongation limit, the slurry pipes need to be extended synchronously to ensure the continuity of tunneling. Using lateral support can avoid occupying ground transportation channels, improve space utilization, and allow the pipes to extend smoothly along a predetermined path, while keeping the subsequent rigid pipe sections fixed. This facilitates controlled collection of leaked slurry and makes long-term maintenance convenient.

[0003] In existing technologies, mud pipe fixing supports often employ an arc-shaped plate fitted to the inner ring surface of the tunnel segment. Upper and lower support rods are installed on the inner ring side of the arc-shaped plate, each connected to the arc-shaped plate via a diagonal brace. During use, the fixing support is installed diagonally below the tunnel face, with both upper and lower support rods inclined. The mud pipe is then stably placed at the axle angle between the support rod and the arc-shaped plate, as shown in the patent document with application number CN217270197U. However, this method has drawbacks: 1. The mud pipeline is heavy. The mud pipeline is fixed between the support rod and the arc plate by the inclination angle of the support rod. The mud pipeline will exert great pressure on the arc plate and the pipe segment. Since the mud pipeline will be subjected to periodic vibration during the high-pressure pumping of mud, this will increase the wear between the support and the pipe segment, and may even cause the pipe segment to shift. 2. When the support rod is set horizontally, the mud pipeline is prone to lateral movement and detachment from the support. That is, the above-mentioned support is not suitable for setting in a position where the support rod is horizontal, and its applicability to working conditions is poor. Utility Model Content

[0004] The purpose of this utility model is to overcome at least one of the above-mentioned deficiencies and provide a mud pipe support device for slurry shield tunneling, which can improve the applicability of horizontally set support rods and reduce the vibration impact of mud pipes on tunnel segments.

[0005] This utility model provides a slurry pipe support device for slurry shield tunneling, including a main support rod, a first support rod, and a second support rod. The main support rod is used to be circumferentially arranged along the inner arc surface of the tube segment; One end of the first support rod is connected to the main support rod of the bracket, and the other end is provided with a first limiting rod for limiting the external position of the mud pipe. The bottom of the first support rod is connected to the main support rod of the bracket through a diagonal brace. The second support rod is located above the first support rod. One end of the second support rod is connected to the main rod of the support, and the other end is provided with a second limiting rod for limiting the mud pipe externally. A third limiting rod for limiting the mud pipe internally is provided between the second support rod and the first support rod. The third limiting rod is connected to the first support rod and the second support rod respectively.

[0006] Preferably, the main support rod is an arc-shaped member, which can better fit the arc surface of the tube segment.

[0007] Preferably, the main support rod is used for detachable connection with the tunnel segment, which facilitates reuse.

[0008] Preferably, the main support rod is provided with at least two fixing structures, which are used for bolting to the segments.

[0009] Preferably, the fixing structure is made of bent steel plate, which is fixedly connected to the main rod of the support. The bent steel plate extends out of the main rod of the support and is bent to form a bent part. A connecting hole is provided at the bent part, which is used to connect with the segment connecting bolt.

[0010] Preferably, the first support rod extends beyond the second support rod, and a horizontal displacement is provided between the first limiting rod and the second support rod to allow the mud pipe to be lowered vertically, facilitating the hoisting of the mud pipe. The second limiting rod and the third limiting rod can be integrally formed components, or they can be separately positioned in the same vertical position or in different positions.

[0011] Preferably, the top end of the first limiting rod is fixedly connected to the first support rod.

[0012] More preferably, the second support rod is provided with a fourth limiting rod, which is used to internally limit the mud pipe. The bracket can be set horizontally or at an angle.

[0013] Preferably, a fixing steel plate is provided at the axle angle between the first support rod and the main support rod, and at the axle angle between the second support rod and the main support rod.

[0014] Preferably, the main support rod is made of angle steel or I-beam steel.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a slurry pipe support device for a slurry shield tunneling machine. The device uses a first and second limiting rod for external limiting to prevent the slurry pipe from laterally shifting and detaching from the support. Simultaneously, a third limiting rod supports the second support rod and serves as an internal limiting rod for the slurry pipe on the second support rod, improving the horizontal load-bearing capacity of the second support rod and increasing pipeline stability. Based on this, the slurry pipe support device allows the support to be positioned so that the first and second support rods are horizontal, preventing the slurry pipe on the first and second support rods from directly acting on the main support rod wall, reducing vibration transmission. In this position, the first and second support rods are only subjected to the gravity of the slurry pipe, with no lateral pressure on the main support rod. The negative impact of the slurry pipe on the support and surrounding tunnel segments is minimal, which helps improve the installation stability and applicability of the support for horizontal installation, and enhances the fatigue strength of the support. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a slurry pipe support device for a slurry shield tunneling machine in one of the embodiments; Figure 2 This is a cross-sectional view of the connection between the bent steel plate and the main support rod. Figure 3 for Figure 1 A schematic diagram of the structure when installed horizontally; Figure 4 This is a schematic diagram of another slurry pipe support device for a slurry shield tunneling machine in the embodiment. Figure 5 for Figure 4 A schematic diagram of the structure when installed at an angle; Figure 6 This is a flowchart illustrating the process of using mud pipe supports for extending mud pipes in mud shield tunneling.

[0017] Marked in the image: 1-Main support rod; 2-First support rod; 3-Second support rod; 4-First limiting rod; 5-Second limiting rod; 6-Third limiting rod; 7-Fourth limiting rod; 8-Bent steel plate; 9-Diagonal brace; 10-Mulch pipe; 11-Segment. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0019] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0021] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0022] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0023] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0024] Example like Figure 1 As shown, a mud pipe support device for a slurry shield tunnel includes a main support rod 1, a first support rod 2, and a second support rod 3. The main support rod 1 is used to be arranged circumferentially along the inner arc surface of the tunnel segment 11. One end of the first support rod 2 is connected to the main support rod 1, and the other end is provided with a first limiting rod 4 for limiting the mud pipe 10. The bottom of the first support rod 2 is connected to the main support rod 1 through a diagonal brace 9. The second support rod 3 is located above the first support rod 2. One end of the second support rod 3 is connected to the main support rod 1, and the other end is provided with a second limiting rod 5 for limiting the mud pipe 10 externally. A third limiting rod 6 for limiting the mud pipe 10 internally is provided between the second support rod 3 and the first support rod 2. The third limiting rod 6 is connected to the first support rod 2 and the second support rod 3 respectively.

[0025] In the aforementioned slurry pipe support device for slurry shield tunneling, both the first support rod 2 and the second support rod 3 are used to place the slurry pipe 10, and are respectively externally limited by the first limiting rod 4 and the second limiting rod 5 to prevent the slurry pipe 10 from laterally detaching from the support. By setting a third limiting rod 6 between the second support rod 3 and the first support rod 2, and connecting the third limiting rod 6 to the first support rod 2 and the second support rod 3 respectively, the load on the second support rod 3 can be transferred to the first support rod 2 below through the third limiting rod 6, and then transferred to the main support rod 1 of the support by the first support rod 2 and the diagonal brace 9. This achieves better load bearing of the second support rod 3, reduces bending deformation, and better adapts to horizontal load bearing. At the same time, the third limiting rod 6 can be used to internally limit the slurry pipe 10 on the second support rod 3.

[0026] By adopting the above-mentioned slurry pipe support device for slurry shield tunneling, the technical effect of setting the support in a position where the first and second support rods are horizontal can be achieved. This avoids the slurry pipes on the first and second support rods directly acting on the wall of the main support rod, reducing vibration transmission. At this time, the first and second support rods are only subjected to the gravity of the slurry pipes, and there is no lateral pressure on the main support rod. The negative impact of the slurry pipes on the support and surrounding tunnel segments is small, which is conducive to improving the stability of the support installation and the applicability of horizontal installation, and improving the fatigue strength of the support.

[0027] In an optional embodiment, the main support rod 1 is arc-shaped along its length to match the inner annular surface of the segment 11 for a fitted installation. The main support rod 1 has at least two fixing structures for detachable connection with the segment 11; preferably, such as... Figure 2As shown, the fixing structure uses a 5mm thick bent steel plate 8, which is fixedly connected to the main support rod 1. The bent steel plate 8 extends out of the main support rod 1 and is bent to form a bent section. A connecting hole is provided at the bent section. In use, the bent steel plate 8 is inserted obliquely into the circumferential joint of the segment 11. By rotating the segment connecting bolts, the connecting hole is engaged with the segment connecting bolts, thus enabling the installation and disassembly of the support. The bent steel plate 8 has a large contact area, allowing it to connect to the side wall of the main support rod 1, facilitating welding and ensuring installation quality.

[0028] In optional implementations, such as Figure 1 , Figure 3 As shown, the end of the first support rod 2 extends beyond the second support rod 3, and a horizontal displacement is provided between the first limiting rod 4 and the second support rod 3 to allow the mud pipe 10 to be lowered vertically, facilitating the hoisting of the mud pipe 10. Preferably, the second limiting rod 5 and the third limiting rod 6 can be set in the same vertical position.

[0029] The aforementioned slurry pipe support device for slurry shield tunneling can be prefabricated in the factory according to the dimensions of the slurry pipe 10, ensuring that the space between the first limiting rod 4 and the third limiting rod 6 on the first support rod 2 can accommodate the return slurry pipe (or discharge slurry pipe), and the space between the second limiting rod 5 on the second support rod 3 and the main support rod 1 can accommodate the discharge slurry pipe (or return slurry pipe). In use, the support is horizontally positioned on the side of the tunnel and fixedly connected to the tunnel segment 11. Both the first support rod 2 and the second support rod 3 are horizontally positioned, and the return slurry pipe and the discharge slurry pipe are placed on the first support rod 2 and the second support rod 3, respectively. After the slurry balance shield tunneling is completed, the slurry pipe 10 (including the return slurry pipe and the discharge slurry pipe) and the support are removed.

[0030] In optional implementations, such as Figure 4 , Figure 5As shown, the ends of the first support rod 2 and the second support rod 3 can be aligned, the first limiting rod 4 can be aligned with the second limiting rod 5, and the top of the first limiting rod 4 is vertically connected to the first support rod 2. Preferably, a third limiting rod 6 is provided inside the first support rod 2 for limiting the mud pipe 10, and a fourth limiting rod 7 is provided on the second support rod 3 for limiting the mud pipe 10. The third limiting rod 6 and the fourth limiting rod 7 can be aligned. This support device can be used in a horizontal setting (i.e., the first support rod 2 and the second support rod 3 are horizontal) or an inclined setting, providing good adaptability to different working conditions; the mud pipe 10 is placed on the first support rod 2 and the second support rod 3 respectively. The load on the second support rod 3 is transferred downward to the first support rod 2 and the diagonal brace 9 through the first limiting rod 4 and the third limiting rod 6, ensuring the load-bearing capacity of the second support rod 3. The third limiting rod 6 and the fourth limiting rod 7 are used on the inside of the support to laterally limit the mud pipe 10 on the first support rod 2 and the second support rod 3, respectively, to ensure that the mud pipe 10 is installed stably and does not come into contact with the inner wall of the support, thereby reducing the negative impact of the vibration of the mud pipe 10 on the support and surrounding pipe segments and other structures.

[0031] Furthermore, in the above optional embodiments, it is preferable to weld 4mm-6mm thick fixing steel plates at the armholes between the first support rod 2 and the main support rod 1, and between the second support rod 3 and the main support rod 1, to improve the structural load-bearing capacity. The main support rod 1 is made of angle steel or I-beam bent into shape, which is easy to process. Other structural members can also be made of angle steel, channel steel, I-beam and other steel profiles, which are simple to process, low in cost and readily available.

[0032] The installation of the mud pipe support device includes the following main steps: When the tunnel boring machine reaches a pipe replacement stroke, it stops tunneling and the pipes are replaced. The process is as follows: 1. Set the mud pipeline to bypass mode; 2. In bypass mode, thoroughly clean the mud pipe with bentonite; 3. Disconnect all pumps connected to the mud pipeline and use a slurry discharge system to drain the mud from the pipe section; 4. Ensure that the corresponding ball valves and gate valves are fully closed; 5. Disconnect the tunnel's pipeline from the pipe-changing device's pipeline and drain the mud; 6. The pipe support is pulled forward by the chain a certain distance (slightly longer than the pipe replacement length). 7. Prepare pre-fabricated mud pipe supports, align the bolt holes on both sides of the supports with the segment bolts on the extended side of the mud pipe, loosen the segment bolts, insert the bolts into the bolt holes of the supports, and then tighten the bolts. Generally, 3 to 4 sets of supports are needed for each mud pipe extension. Connect the new pipe to the fixed pipeline in the tunnel using a pipeline hoist. 8. Fold the pipe bracket back to the position where the new pipe can be connected, so that the new pipe is connected to the side-mounted rigid pipe; 9. Reopen all necessary gate valves, ball valves, etc. 10. Restart all pump stations and continue tunneling.

[0033] Using this device eliminates the need for additional on-site manpower and resources for processing. Only the processing dimensions need to be provided for pre-processing, allowing for seamless integration with the site. After installation, the device can be directly placed using a pipe-changing crane, eliminating the need for manual handling. Furthermore, the device provides sufficient space for the mud pipe to move, effectively solving the problem of mud pipes not extending and connecting smoothly during tunnel inclines, declines, and turns, thus ensuring the smooth progress of shield tunneling. This device is simple to operate, highly safe, easy to process, and has a high recycling rate, effectively shortening the construction period of slurry shield tunneling, significantly reducing project costs, and demonstrating excellent economic benefits.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slurry pipe support device for slurry shield tunneling, characterized in that, It includes the main support rod (1), the first support rod (2), and the second support rod (3). The main support rod (1) is used to be arranged circumferentially along the inner arc surface of the tube segment (11); One end of the first support rod (2) is connected to the main rod (1) of the support, and the other end is provided with a first limiting rod (4) for limiting the mud pipe (10) externally. The bottom of the first support rod (2) is connected to the main rod (1) of the support through a diagonal brace (9). The second support rod (3) is located above the first support rod (2). One end of the second support rod (3) is connected to the main rod (1) of the support, and the other end is provided with a second limiting rod (5) for limiting the outside of the mud pipe (10). A third limiting rod (6) for limiting the inside of the mud pipe (10) is provided between the second support rod (3) and the first support rod (2). The third limiting rod (6) is connected to the first support rod (2) and the second support rod (3) respectively.

2. The slurry pipe support device for a slurry shield tunneling machine according to claim 1, characterized in that, The main rod (1) of the support is an arc-shaped rod.

3. The slurry pipe support device for a slurry shield tunneling machine according to claim 1, characterized in that, The main support rod (1) is used for detachable connection with the segment (11).

4. The slurry pipe support device for a slurry shield tunneling machine according to claim 3, characterized in that, The main rod (1) of the support is provided with at least two fixing structures, which are used to be bolted to the pipe segment (11).

5. A slurry pipe support device for a slurry shield tunneling machine according to claim 4, characterized in that, The fixed structure adopts a bent steel plate (8), which is fixedly connected to the main rod (1) of the support. The bent steel plate (8) extends out of the main rod (1) of the support and is bent to form a bent part. A connecting hole is provided at the bent part, which is used to connect with the pipe segment connecting bolt.

6. A slurry pipe support device for a slurry shield tunneling machine according to any one of claims 1-5, characterized in that, The first support rod (2) extends beyond the second support rod (3), and a horizontal displacement is provided between the first limiting rod (4) and the second support rod (3) for the mud pipe (10) to be lowered vertically.

7. A slurry pipe support device for a slurry shield tunneling machine according to any one of claims 1-5, characterized in that, The top end of the first limiting rod (4) is fixedly connected to the first support rod (2).

8. A slurry pipe support device for a slurry shield tunneling machine according to claim 7, characterized in that, The second support rod (3) is provided with a fourth limiting rod (7), which is used to internally limit the mud pipe (10).

9. A slurry pipe support device for a slurry shield tunneling machine according to any one of claims 1-5, characterized in that, Fixed steel plates are provided at the axle angles between the first support rod (2) and the main support rod (1) and between the second support rod (3) and the main support rod (1).

10. A slurry pipe support device for a slurry shield tunneling machine according to any one of claims 1-5, characterized in that, The main support rod (1) is made of angle steel or I-beam.

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