Split originating mud pipe extension device

Abstract

The application discloses a split originating slurry pipe extension device, which comprises an originating wellhead slurry pipe pipe-replacing support, a hand chain block, an extended slurry pipe, a slurry hose, a wellhead section slurry pipe support, a tunnel slurry pipe section support, a walking support, a flexible and rigid pipe joint and an extension slide, one end of the extended slurry pipe is connected with a tunnel trolley in a slurry shield tunnel, the walking support is arranged above the extension slide, the extension slide is supported by the tunnel slurry pipe section support in the tunnel, and the wellhead section slurry pipe support supports the extended slurry pipe after the extended slurry pipe reaches the wellhead, and the other end of the extended slurry pipe is connected with the slurry hose on the originating wellhead slurry pipe pipe-replacing support. The device utilizes the power of the slurry shield machine to pull the extended slurry pipe, and the rollers and the slide are used to assist the forward movement of the extended pipe, so that the problem of the slurry shield split originating slurry pipe extension is fully solved.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction technology, specifically relating to a split-type initiating mud pipe extension device. Background Technology

[0002] During tunnel construction, when using a slurry shield tunneling machine, extending the slurry pipe is a crucial step. As the shield tunneling machine advances, the slurry pipe needs to be continuously extended. Due to the weight of the slurry pipe and the difficulty of manually connecting it, a special slurry pipe connection device is installed on the tail carriage of the slurry shield tunneling machine to improve the efficiency of slurry pipe connection.

[0003] The launching of slurry shield tunneling machines can be divided into integral launching and split launching. In integral launching, the slurry pipe extension can be directly connected using the connecting pipe device of the tail trolley. However, with rapid urban development and stringent construction site requirements in central cities, shield tunneling machines generally do not meet the conditions for integral launching, and split launching is more often required. In split launching, the tail slurry pipe connecting pipe device trolley of the slurry shield tunneling machine cannot be connected and used.

[0004] The prior art, such as the patent with publication number CN 119616507 A, discloses a mud shield small space multi-section fixed-point mud pipeline extension system and construction method. This technology requires a complex structure for the mud pipeline extension device, a large wellhead area, and high cost. It is more suitable for use in full-section split starting and multi-section mud pipeline extension. Summary of the Invention

[0005] In order to overcome the technical problems in the prior art, the present invention provides a split-type starting mud pipe extension device, which uses the power of the tunnel boring machine to drag the extension mud pipe and uses rollers and slides to assist the forward movement of the extension pipe, thus solving the above-mentioned technical problems.

[0006] A split-type starting mud pipe extension device includes a starting wellhead mud pipe replacement support, a hand-operated hoist, an extension mud pipe, a mud hose, a wellhead section mud pipe support, a tunnel mud pipe section support, a traveling support, a flexible and rigid pipe joint connection, and an extension slide. One end of the extension mud pipe is connected to the tunnel trolley of the slurry shield machine and is placed above the extension slide via the traveling support. The extension slide is supported by the tunnel mud pipe section support inside the tunnel and by the wellhead section mud pipe support after reaching the wellhead. The other end of the extension mud pipe is connected to the mud hose on the starting wellhead mud pipe replacement support.

[0007] The aforementioned split-type mud pipe extension device includes a wellhead section mud pipe support comprising a vertical leg, a cover plate, and connectors. The vertical leg is made of I-beam steel, the cover plate is made of 10mm thick steel plate, the connectors are made of angle steel, and the extension slide is made of channel steel. The extension slide is pressed onto the cover plate and welded to it. The cover plate is welded to the upper surface of the vertical leg, and the two vertical legs are fixedly connected by two connectors.

[0008] The aforementioned split-type starting mud pipe extension device includes a tunnel mud pipe section support comprising a leg, a cover plate, a connector, a fixing ear plate, and a column support plate. The bottom is supported on the arc-shaped column support plate, and the entire tunnel mud pipe section support is fixed to the tunnel by connecting the fixing ear plate to the bolt holes of the pipe segment.

[0009] The aforementioned split-type initiating mud pipe extension device includes a traveling support comprising two mud pipe fixing clamps, a roller connecting platform, and rollers. The mud pipe fixing clamps are used to fix the extension mud pipe on the roller connecting platform, and two rollers are installed at the bottom of the roller connecting platform to drive the extension mud pipe to move in the extension slide.

[0010] The aforementioned split-type starting mud pipe extension device allows the slurry shield machine to install and fix a mud pipe support at the wellhead plate at the rear of the detached trolley and extend the extension slide after each ring of excavation before the trolley enters the tunnel for forward excavation, so as to allow the extension mud pipe to move forward.

[0011] The aforementioned split-type starting mud pipe extension device allows the slurry shield machine to install and fix ear plates on the one ring segment that comes off the tail of the slurry shield after the trolley enters the tunnel and excavates forward. This is done by installing and fixing the tunnel mud pipe section support and extending the extension slide for the extension mud pipe to move forward.

[0012] When this utility model is in use, as the slurry shield machine is excavating forward inside the tunnel, the shield trolley pulls the rollers on the extension mud pipe inside the tunnel, moving forward together with the shield machine in the extension slide on the mud pipe section support. At the same time, the hand-operated hoist on the mud pipe replacement support at the starting shaft is slowly lowered, and the mud hose is slowly straightened. When a connection length is reached, the mud circulation is shut off, the soft and hard pipe joints near the tunnel side are removed, the hand-operated hoist is raised, the mud hose is retracted, and the space between the extension mud pipe and the mud hose is cleared. A new extension mud pipe is then connected, thus achieving pipeline extension.

[0013] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: 1. This utility model provides a split-type starting mud pipe extension device, which uses the forward propulsion power of the tunnel boring machine to pull the extension mud pipe, and uses rollers and slides to assist the forward movement of the extension pipe, thus fully adapting to the problem of split-type starting mud pipe extension in slurry shield tunnels. 2. During the forward movement of this utility model, the fixed position of each newly connected extension mud pipe is at the wellhead, and it can be used with the assistance of lifting equipment, which effectively solves the problems of difficult pipe connection and low efficiency in tunnels. 3. This utility model has a simple structure, requires small parts, and is easy to manufacture. It effectively solves the problem of small space at the starting wellhead during the split-type starting stage of slurry shield tunneling, and is also conducive to cost control. Attached Figure Description

[0014] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a cross-sectional view of the wellhead mud pipe replacement support described in this utility model; Figure 2 This is a schematic diagram of the wellhead section mud pipe support structure of the present invention; Figure 3 This is a cross-sectional view of the wellhead section mud pipe support described in this utility model; Figure 4 This is a schematic diagram of the tunnel mud pipe section support structure described in this utility model; Figure 5 This is a cross-sectional view of the tunnel mud pipe section support described in this utility model; Figure 6 This is a schematic diagram of the structure of the walking support frame described in this utility model; Figure 7 This is a schematic diagram of a slurry pipe extension device for a slurry shield tunneling machine, which is just connected to the extension slurry pipe. Figure 8 This is a schematic diagram of a slurry pipe extension device for a slurry shield tunneling machine, showing the extension slurry pipe moving forward to a length of one slurry pipe connector. Figure 9 This utility model provides a schematic diagram of a slurry pipe extension device for a slurry shield tunneling machine, showing the disconnection of the slurry hose and the extension slurry pipe connector, leaving space for the connection of a new extension slurry pipe. In the diagram: 1-Starting wellhead mud pipe replacement support, 2-Hand chain hoist, 3-Extending mud pipe, 4-Mud hose, 5-Wellhead section mud pipe support, 6-Tunnel mud pipe section support, 7-Tunnel, 8-Traveling support, 9-Soft and hard pipe joint connection, 10-Extending slide, 21-Upright leg, 22-Cover plate, 23-Connector, 24-Fixing ear plate, 25-Column support plate, 81-Fixing clamp, 82-Roller connection platform, 83-Roller. Detailed Implementation

[0015] This invention patent provides a split-type starting mud pipe extension device, including a starting wellhead mud pipe replacement support 1, a hand-operated hoist 2, an extension mud pipe 3, a mud hose 4, a wellhead section mud pipe support 5, a tunnel mud pipe section support 6, a traveling support 8, a flexible and rigid pipe joint connection 9, and an extension slide 10. One end of the extension mud pipe 3 is connected to the tunnel trolley of the slurry shield machine and is placed above the extension slide 10 via the traveling support 8. The extension slide 10 is supported by the tunnel mud pipe section support 6 inside the tunnel 7 and by the wellhead section mud pipe support 5 after reaching the wellhead. The other end of the extension mud pipe 3 is connected to the mud hose 4 on the starting wellhead mud pipe replacement support 1. Figure 1 The image shown is a cross-sectional view of the wellhead mud pipe replacement support 1 described in this utility model.

[0016] like Figure 2 and Figure 3 The diagram shows a schematic and cross-sectional view of the wellhead mud pipe support 5 of this utility model. The wellhead mud pipe support 5 includes a vertical leg 21, a cover plate 22, and a connector 23. The vertical leg 21 is made of I-beam steel, the cover plate 22 is made of 10mm thick steel plate, the connector 23 is made of angle steel, and the extension slide 10 is made of channel steel. The extension slide 10 is pressed on the cover plate 22 and welded to it. The cover plate 22 is welded to the upper surface of the vertical leg 21, and the two vertical legs 21 are fixedly connected by two connectors 23.

[0017] like Figure 4 and Figure 5 The diagram shows a schematic and cross-sectional view of the tunnel mud pipe section support 6 of this utility model. The tunnel mud pipe section support 6 includes a leg 21, a cover plate 22, a connector 23, a fixing ear plate 24, and a column support plate 25. The bottom is supported on the arc-shaped column support plate 25. The entire tunnel mud pipe section support 6 is fixed to the tunnel 7 by connecting the fixing ear plate 24 to the bolt holes of the pipe segment.

[0018] like Figure 6 The diagram shows the structure of the walking support 8 of this utility model. The walking support 8 includes two mud pipe fixing clamps 81, a roller connecting platform 82, and rollers 83. The mud pipe fixing clamps 81 are used to fix the extended mud pipe 3 on the roller connecting platform 82. Two rollers 83 are installed at the bottom of the roller connecting platform 82 to drive the extended mud pipe 3 to move in the extension slide 10.

[0019] When the slurry shield machine is not in the tunnel 7 and is excavating forward, after each ring is excavated, a mud pipe support 5 is installed and fixed on the wellhead plate at the rear of the slurry shield machine and an extension slide 10 is extended for the extension mud pipe 3 to move forward.

[0020] When the slurry shield machine is excavating forward after the trolley enters the tunnel 7, it installs and fixes ear plates 24 on the 1 ring segment that comes off the trolley after each ring is excavated, using the bolt holes of the segment. This allows for the installation and fixing of the tunnel slurry pipe section support 6 and the extension slide 10, which is used to extend the slurry pipe 3 forward.

[0021] This utility model discloses a split-type mud pipe extension device, which completes the long-distance deployment of mud hoses through the following construction implementation steps: S1: Install the starting wellhead mud pipe replacement support 1 at the wellhead. Use the hand-operated hoist 2 to lift and retract the mud hose 4 into place, and connect the mud hose 4 to the extension mud pipe 3. One end of the extension mud pipe 3 is connected to the mud hose 4, and the other end is connected to the trolley inside the tunnel 7 of the slurry shield machine. The middle extension mud pipe 3 is fixed to the traveling support 8 and placed on the extension slide 10. The extension slide 10 is supported by the wellhead section mud pipe support 5 or the tunnel mud pipe section support 6. Figure 7 The diagram shown is a schematic of the newly connected extension mud pipe. S2: When the slurry shield tunneling machine advances, the extended slurry pipe 3 at the shield trolley end is dragged forward by the machine, simultaneously causing the roller 83 below the fixing clamp 81 of the extended slurry pipe 3 to roll forward on the extension slide 10. The slurry hose 4 is slowly straightened by the lifting chain lowered by the hand-operated hoist 2. Figure 8 The diagram shown is a schematic of the extension of the mud pipe forward to a length of one mud pipe connection. S3: For every ring the tunnel boring machine advances, a shaft opening section mud pipe support 5 or a tunnel mud pipe section support 6 is installed at the rear of the trolley, and the extension slide 10 is extended. S4: When the tunnel boring machine moves forward with the extension mud pipe 3 to the length of one mud pipe connection (4 rings), stop tunneling, shut off mud circulation, disconnect the mud hose 4 near the tunnel side from the extension mud pipe connector, and lift the hand-operated hoist 2 to retract the mud hose 4, clearing the space between the extension mud pipe 3 and the mud hose 4. With the cooperation of the hoisting equipment in the launching shaft, hoist a new extension mud pipe 3, connecting both ends to the previous extension mud pipe 3 and mud hose 4 respectively. Install a traveling support 8 on the new extension mud pipe 3 at intervals of one tunnel segment width, and place the rollers 83 on the traveling support 8 into the extension slide 10. This completes one pipeline extension. Figure 9 The diagram shown is a schematic of disconnecting the mud hose and the extension mud pipe connector to make room for connecting a new extension mud pipe. S5: After the extension of mud pipe 3 is completed, turn on the mud circulation and continue to excavate forward according to the tunnel boring machine construction sequence; S6: Repeat steps S2-S5 until the slurry shield tunneling unit launch is completed; S7: Introduction to the separate launch of the slurry shield tunneling machine, dismantling the slurry pipe extension device, organizing the entire shield machine, and using the slurry pipe extension device on the trolley to carry out slurry shield tunneling construction.

Claims

1. A split-type initiating mud pipe extension device, characterized in that, The system includes a mud pipe replacement support at the starting wellhead (1), a hand chain hoist (2), an extension mud pipe (3), a mud hose (4), a mud pipe support at the wellhead section (5), a mud pipe support for the tunnel section (6), a traveling support (8), a soft and hard pipe joint connection (9), and an extension slide (10). One end of the extended mud pipe (3) is connected to the trolley inside the tunnel of the slurry shield machine. It is placed above the extended slide (10) by the traveling support (8). The extended slide (10) is supported by the tunnel mud pipe section support (6) inside the tunnel (7). After reaching the wellhead, it is supported by the wellhead section mud pipe support (5). The other end of the extended mud pipe (3) is connected to the mud hose (4) on the mud pipe replacement support (1) at the starting wellhead.

2. The split-type initiating mud pipe extension device according to claim 1, characterized in that, The wellhead section mud pipe support (5) includes a vertical leg (21), a cover plate (22), and a connector (23). The vertical leg (21) is made of I-beam, the cover plate (22) is made of 10mm thick steel plate, the connector (23) is made of angle steel, and the extension slide (10) is made of channel steel. The extension slide (10) is pressed on the cover plate (22) and welded and fixed. The cover plate (22) is welded to the upper surface of the vertical leg (21). The two vertical legs (21) are fixedly connected by two connectors (23).

3. The split-type initiating mud pipe extension device according to claim 1, characterized in that, The tunnel mud pipe section support (6) includes a leg (21), a cover plate (22), a connector (23), a fixing ear plate (24), and a column support plate (25). The bottom is supported on the arc-shaped column support plate (25). The entire tunnel mud pipe section support (6) is fixed to the tunnel (7) by connecting the fixing ear plate (24) to the pipe segment bolt holes.

4. The split-type initiating mud pipe extension device according to claim 1, characterized in that, The walking support (8) includes two mud pipe fixing clamps (81), a roller connecting platform (82) and rollers (83). The mud pipe fixing clamps (81) are used to fix the extended mud pipe (3) on the roller connecting platform (82). Two rollers (83) are installed at the bottom of the roller connecting platform (82) to drive the extended mud pipe (3) to move in the extension slide (10).

5. The split-type initiating mud pipe extension device according to claim 1, characterized in that, When the slurry shield machine is working forward before the trolley enters the tunnel (7), after each ring is excavated, a slurry pipe support (5) is installed and fixed on the wellhead plate at the rear of the trolley and the extension slide (10) is extended for the extension slurry pipe (3) to move forward.

6. The split-type initiating mud pipe extension device according to claim 1, characterized in that, When the slurry shield machine is excavating forward after the trolley enters the tunnel (7), it installs and fixes ear plates (24) on the 1 ring segment that comes off the trolley after each ring is excavated, using the bolt holes of the segment. This allows for the installation and fixing of the tunnel slurry pipe section support (6) and the extension slide (10) for the extension slurry pipe (3) to move forward.

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