Working pipe for pipe jacking construction

Abstract

The utility model discloses a working pipe for pipe jacking construction, which is formed by connecting a plurality of working pipe groups end to end, each working pipe group comprises a main pipe, an auxiliary pipe and a fixing component, the auxiliary pipe is arranged in the main pipe and is connected with the main pipe through the fixing component, the auxiliary pipe comprises a mud inlet pipe and a mud outlet pipe, and the mud inlet pipe is connected with the mud outlet pipe through the fixing component. A first channel set is arranged on the periphery of the sludge inlet pipe, a second channel set is arranged on the periphery of the sludge outlet pipe, and the first channel set and the second channel set are connected with the sludge inlet pipe and the sludge outlet pipe through connecting pieces respectively. The main pipe and the auxiliary pipe are arranged, the functions of drilling, monitoring, slurry circulation and pouring are integrated, the connecting assembly is arranged, the working pipe is convenient to mount and dismount, and construction of a long-distance large-diameter concrete pile structure is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a working pipe for pipe jacking construction. Background Technology

[0002] Pre-formed tunneling technology is a widely used technique in tunnel and underground engineering construction, especially in concrete structures or geotechnical engineering. ZL201410667818.9 discloses an advanced lining method and equipment for tunnel construction in weak surrounding rock. This method involves forming multiple longitudinal concrete blocks in the tunnel arch and overlapping them laterally to form an arched lining structure. However, this technology is limited by factors such as geological conditions and monitoring, resulting in a relatively short tunneling distance in a single operation, thus restricting construction efficiency. Additionally, pipe jacking can provide effective protection for pre-formed tunnels, excavating under the protection of the pipe jacking curtain. However, due to geological conditions, achieving 100% overlap of the steel pipes is difficult, affecting the continuity and stability of construction. New pipe jacking and pipe-jacking methods require cutting and connecting large-diameter steel pipes inserted into the ground, leading to material waste and cumbersome procedures. Based on the existing technologies described above, a large-diameter steel pipe is driven into the ground, followed by concrete pouring. Simultaneously, the driven steel pipe is pulled back to form a stable concrete structure, and the pipe is then recovered. To achieve these functions, the driven steel pipe, i.e., the tool pipe, not only needs to be easy to install and disassemble but also needs to integrate drilling, monitoring, mud circulation, and pouring functions. Only in this way can the construction of long-distance, large-diameter concrete pile structures be realized. Therefore, developing a tool pipe that integrates all these functions is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of this utility model is to provide a working pipe for pipe jacking construction, which is not only easy to install and disassemble, but also integrates drilling, monitoring, mud circulation and grouting functions, realizing the construction of long-distance large-diameter concrete pile structures.

[0004] To achieve the above objectives, this utility model is implemented through the following solution:

[0005] A working pipe for pipe jacking construction is composed of multiple working pipe groups connected end to end. Each working pipe group includes a main pipe, a secondary pipe, and a fixing component. The secondary pipe is located inside the main pipe and is connected to the main pipe through the fixing component. The secondary pipe includes a mud inlet pipe and a mud outlet pipe. The outer periphery of the mud inlet pipe is provided with a channel group one, and the outer periphery of the mud outlet pipe is provided with a channel group two. The channel group one and the channel group two are respectively connected to the mud inlet pipe and the mud outlet pipe through connectors.

[0006] Furthermore, the fixing components are arranged in pairs. Each fixing component includes a positioning wheel, a support bracket, and a fixing shaft. The positioning wheel is located on the inner bottom side of the main pipe, and the support bracket is located on the top of the positioning wheel. A secondary pipe is provided on the top of the support bracket. One end of the fixing shaft is connected to the side of the support bracket, and the other end is connected to the main pipe, fixing the secondary pipe to the main pipe. The pair of fixing components are connected by the support bracket.

[0007] Furthermore, the working tube groups are connected by a connecting component.

[0008] Furthermore, the connecting assembly includes a mother ring and a daughter ring, the end of the mother ring being connected to the main pipe, the end of the daughter ring being connected to an adjacent main pipe, and the mother ring and the daughter ring being connected by a threaded snap fastener.

[0009] Furthermore, the first channel group includes a positioning pipeline, a hydraulic pipeline, a water pipeline, and a backup pipeline, and the second channel group includes a positioning pipeline, a hydraulic pipeline, a water pipeline, a detection pipeline, and a backup pipeline.

[0010] Furthermore, the connecting component is a flange.

[0011] Furthermore, the diameter of the main pipe is not less than 1m, and the diameter of the secondary pipe is 1 / 12 to 1 / 8 of the diameter of the main pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a secondary pipe inside the main pipe and setting a channel group radially around the secondary pipe, the drilling, monitoring, mud circulation and grouting functions are integrated into one. By setting a connecting component, the installation and disassembly of the working pipe group are facilitated, and the high-precision overlap of the working pipe group is achieved, ensuring the continuity and stability of construction, and realizing the construction of long-distance large-diameter concrete pile structures. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a cross-sectional view of a working pipe used in pipe jacking construction according to this utility model;

[0015] Figure 2 This is a schematic diagram of the auxiliary pipe and channel assembly of the working pipe used in pipe jacking construction according to this utility model;

[0016] Figure 3 This is a schematic diagram of a fixing component for a working pipe used in pipe jacking construction according to this utility model;

[0017] Figure 4This is a side view of a working pipe used in pipe jacking construction according to this utility model;

[0018] Figure 5 This is an exploded view of the connection components of a working pipe used in pipe jacking construction according to this utility model;

[0019] Figure 6 This is a schematic diagram of the connection status of a connection component for a working pipe used in pipe jacking construction according to this utility model.

[0020] Reference numerals: 1. Main pipe; 2. Mud inlet pipe; 3. Mud outlet pipe; 4. Channel group one; 5. Channel group two; 6. Fixing component; 601. Positioning wheel; 602. Support bracket; 603. Fixing shaft; 7. Connecting component; 701. Female ring; 702. Female ring; 703. Threaded snap; 8. Connecting piece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Specific implementation examples are given below.

[0024] Please see Figures 1-6 This utility model provides a working pipe for pipe jacking construction, which is composed of multiple working pipe groups connected end to end. The working pipe group includes a main pipe 1, a secondary pipe and a fixing component 6. The main pipe 1 is jacked into the stratum by a pipe jacking machine. The secondary pipe is set inside the main pipe 1 and connected to the main pipe 1 through the fixing component 6. The diameter of the main pipe 1 is not less than 1m, and the diameter of the secondary pipe is 1 / 12 to 1 / 8 of the diameter of the main pipe 1.

[0025] The working pipe assemblies are connected by a connecting component 7, which includes a mother ring 701 and a daughter ring 702. The end of the mother ring 701 is connected to the main pipe 1, and the end of the daughter ring 702 is connected to another adjacent main pipe 1. The mother ring 701 and the daughter ring 702 are connected by a threaded snap 703. When the working pipe assemblies are pushed forward, the two adjacent main pipes 1 are rotated so that the mother ring 701 and the daughter ring 702 are misaligned and locked by the threaded snap 703, thereby connecting the adjacent main pipes 1. When the working pipe assemblies are retracted, the two adjacent main pipes 1 are rotated in the opposite direction so that the threaded snap 703 on the mother ring 701 and the daughter ring 702 are aligned, thereby disassembling and separating the adjacent main pipes 1. The connecting component 7 allows for the rapid disassembly of the working pipe assemblies, enabling quick docking between the main pipes 1 and quick disassembly between the main pipes 1 during retraction. The entire process does not require cutting the main pipes 1, saving steel.

[0026] The auxiliary pipe includes an inlet pipe 2 and an outlet pipe 3, which are symmetrically arranged at the bottom of the main pipe 1. A channel group 4 is provided around the outer periphery of the inlet pipe 2. The channel group 4 includes multiple pipes connected to the inlet pipe 2 via connectors 8. The diameter of each pipe is set according to requirements. The channel group 4 has 12 pipes, including 3 positioning pipes, 7 hydraulic pipes, 1 water pipe, and 1 spare pipe. Positioning pipes are equipped with positioning pins for positioning each section of the inlet pipe 2. To facilitate connection with the main pipe 1, the hydraulic pipeline 1 is equipped with 3 correction cylinders and 4 ball valves. The correction cylinders belong to the machine head section and are mainly used for oil supply and return in this pipeline. The ball valves belong to the machine head section and are used for water inlet and outlet. This channel is mainly used to supply oil to the ball valves. The water pipeline 1 is the drilling water pipeline, used for water pumping during pipe jacking and water pumping for the machine head rotary table to facilitate rotation. The backup pipeline 1 is used to replace the faulty pipeline when a pipeline fails. The outer periphery of the mud discharge pipe 3 is equipped with... Channel group two 5 includes multiple pipelines, which are connected to the mud discharge pipe 3 via connectors 8. Channel two has 12 pipelines, including 3 positioning pipelines 2, 5 hydraulic pipelines 2, 1 water pipeline 2, 2 detection pipelines 2, and 1 spare pipeline 2. The positioning pipelines 2 are equipped with positioning pins for positioning each section of the mud discharge pipe 3, facilitating connection with the main pipe 1. The hydraulic pipelines 2 are equipped with 2 correction cylinders, 1 return oil pipe, 1 inlet oil pipe, and 1 overflow oil pipe. The correction cylinders are part of the machine head. In this pipeline, the main oil supply and return pipes for the correction cylinder are used. The return pipe, inlet pipe, and overflow pipe are used for the oil supply, return, and overflow of the head motor. Water pipe two is used for water pumping during drilling. The head is equipped with a rotary table for water pumping to facilitate rotation. Sensors are placed inside detection pipe two for monitoring and measurement during drilling. Backup pipe two is used to replace the faulty pipe when a certain pipe fails. Among them, connector 8 usually adopts a flange or similar flange structure to connect the channel group to the secondary pipe.

[0027] The fixing component 6 includes a positioning wheel 601, a support frame 602, and a fixing shaft 603. The positioning wheel 601 is located on the inner bottom side of the main pipe 1, and the support frame 602 is located on the top of the positioning wheel 601. The secondary pipe is fixed to the top of the support frame 602 by a locking member, which is a clamp. One end of the fixing shaft 603 is connected to the support frame 602, and the other end is connected to the main pipe 1, thereby fixing the secondary pipe to the main pipe 1. The fixing components 6 are arranged in pairs, and the pairs of fixing components 6 are connected by adjacent support frames 602.

[0028] The construction steps of this utility model are as follows:

[0029] Connect the channel assembly to the secondary pipe via connector 8, and connect the secondary pipe to the main pipe 1 via fixing component 6. Start the pipe jacking machine and apply forward thrust with hydraulic jacks to push the pipe jacking machine and working pipe assembly forward. Under the combined action of the rotation of the cutterhead and the jacking force, a hole-forming path is formed. As the pipe jacking machine advances along the preset path in the formation, the rotating cutterhead cuts the soil in front, and mixes the cut soil with mud and water to form mud, which is discharged to the ground through mud outlet pipe 3. After the first section of the main pipe 1 is completely jacked into the formation, the second section of the main pipe 1 is connected in the working well via connecting component 7, so that the connecting component 7 can connect the joint of the adjacent main pipe 1, ensuring seamless connection and sealing between the main pipe 1. This cycle is repeated until the last section of the main pipe 1 is jacked into the formation.

[0030] After stopping the jacking operation, the pipe jacking machine and working pipe assembly are withdrawn, and the mud inlet pipe 2 is started simultaneously. Concrete is injected into the cavity created by the withdrawal of the pipe jacking machine through the mud inlet pipe 2 to ensure that the cavity can be continuously filled with concrete during the withdrawal process. After the pipe jacking machine is completely withdrawn, the orifice is sealed and the withdrawn pipe jacking machine and working pipe assembly are cleaned.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A working pipe for pipe jacking construction, comprising multiple working pipe groups connected end-to-end, characterized in that: The working pipe assembly includes a main pipe (1), a secondary pipe and a fixing component (6). The secondary pipe is located inside the main pipe (1) and is connected to the main pipe (1) through the fixing component (6). The secondary pipe includes a mud inlet pipe (2) and a mud outlet pipe (3). The outer periphery of the mud inlet pipe (2) is provided with a channel group one (4), and the outer periphery of the mud outlet pipe (3) is provided with a channel group two (5). The channel group one (4) and the channel group two (5) are respectively connected to the mud inlet pipe (2) and the mud outlet pipe (3) through a connector (8).

2. A working pipe for pipe jacking construction according to claim 1, characterized in that: The fixing components (6) are arranged in pairs. Each fixing component (6) includes a positioning wheel (601), a support frame (602), and a fixing shaft (603). The positioning wheel (601) is located on the inner bottom side of the main tube (1). The support frame (602) is located on the top of the positioning wheel (601). A secondary tube is provided on the top of the support frame (602). One end of the fixing shaft (603) is connected to the support frame (602), and the other end is connected to the main tube (1). The fixed components (6) are connected to each other through the support frame (602).

3. A working pipe for pipe jacking construction according to claim 1, characterized in that: The working tube groups are connected by a connecting component (7).

4. A working pipe for pipe jacking construction according to claim 3, characterized in that: The connecting assembly (7) includes a mother ring (701) and a daughter ring (702). The end of the mother ring (701) is connected to the main pipe (1), and the end of the daughter ring (702) is connected to the adjacent main pipe (1). The mother ring (701) and the daughter ring (702) are connected by a threaded snap (703).

5. A working pipe for pipe jacking construction according to claim 1, characterized in that: The first channel group (4) includes a positioning pipeline, a hydraulic pipeline, a water pipeline and a backup pipeline, and the second channel group (5) includes a positioning pipeline, a hydraulic pipeline, a water pipeline, a detection pipeline and a backup pipeline.

6. A working pipe for pipe jacking construction according to claim 1, characterized in that: The connector (8) is a flange.

7. A working pipe for pipe jacking construction according to claim 1, characterized in that: The diameter of the main pipe (1) is not less than 1m, and the diameter of the secondary pipe is 1 / 12 to 1 / 8 of the diameter of the main pipe (1).

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