A multi-functional working well for pipe gallery

Abstract

This application belongs to the field of urban underground integrated utility tunnel technology, specifically a multi-functional working shaft for a utility tunnel. The working shaft body is an integral reinforced concrete structure. Multiple utility tunnel interfaces are provided on the circumferential sidewalls of the working shaft body, extending in different directions for connection with subsequent branch lines or main tunnels of the integrated utility tunnel. The inner port of each utility tunnel interface is located within the internal cavity of the working shaft body. Each utility tunnel interface has a detachable sealing component at its inner port. It also includes multiple reserved cable outlet sleeves, which are installed through the sidewalls of the working shaft body. This application utilizes at least three utility tunnel interfaces facing different directions on the circumferential sidewalls of the working shaft body, meeting the connection requirements of utility tunnels with different orientations without requiring large-scale modifications to the working shaft, thus ensuring favorable site conditions for subsequent utility tunnel planning and construction.

Description

Technical Field

[0001] This application belongs to the field of urban underground integrated pipe gallery technology, specifically a multi-functional working well for pipe galleries. Background Technology

[0002] A utility tunnel, or pipe gallery, is a corridor for pipelines and a primary location for the centralized laying of pipelines for large-scale installations. It is typically constructed of steel or reinforced concrete columns, beams, and trusses. The working shaft of the utility tunnel is used for the construction of the tunnel and the laying of pipelines. With the intensive development of urban underground space, integrated utility tunnels, as infrastructure carrying various municipal pipelines such as electricity, communication, water supply and drainage, and heating, are increasingly increasing in scale and complexity.

[0003] The existing working shafts are mostly made of concrete and do not have a standard interface for connecting with subsequent branch pipe corridors. They only meet the starting or receiving needs of pipe jacking construction. If a new pipe corridor needs to be connected later, the wall must be chiseled and the structure must be dismantled again, which is difficult, time-consuming and labor-intensive, and causes a lot of dust and noise pollution. At the same time, the edges of the dismantled interface are uneven, making it difficult to accurately connect with the standard pipe corridor cross section, resulting in poor sealing and easy water leakage. Therefore, it is necessary to design a multi-functional working shaft for pipe corridors to solve the above problems. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of existing technologies by designing a multi-functional working well for pipe racks by setting no fewer than three pipe rack interfaces facing different directions on the circumferential sidewall of the main body of the working well, thus solving the problem of having to chisel the wall again if a new pipe rack needs to be connected later.

[0005] To achieve the above objectives, the following technical solution is adopted: A multi-functional working shaft for a utility tunnel includes a main body, which is an integral reinforced concrete structure. Multiple utility tunnel interfaces are provided on the circumferential sidewalls of the main body and extend in different directions for connecting with branch lines or main tunnels of the integrated utility tunnel to be constructed subsequently. The inner port of each utility tunnel interface is located in the internal cavity of the main body of the working shaft, and each utility tunnel interface is provided with a detachable sealing component at its inner port.

[0006] Preferably, the device also includes multiple reserved cable exit sleeves, which are installed through the side wall of the working well body. The number of reserved cable exit sleeves is multiple and they are evenly distributed along the circumference of the working well body. Each reserved cable exit sleeve includes a rigid outer tube and a corrosion-resistant metal lining embedded in the inner wall of the rigid outer tube. The corrosion-resistant metal lining has internal threads at both ends for connection with subsequent cable fittings or sealing joints. The port of the reserved cable exit sleeve is provided with a detachable end cap, which is connected to the internal thread of the corrosion-resistant metal lining.

[0007] Preferably, the number of pipe gallery interfaces is not less than three, arranged in orthogonal or oblique directions respectively. The cross-sectional shape of the pipe gallery interface is consistent with the cross-section of the standard integrated pipe gallery, which is a circular, rectangular or arc-shaped flat-bottom structure. The wall thickness of the pipe gallery interface is consistent with the side wall of the main body of the working well.

[0008] Preferably, the sealing assembly includes a sealing plate, through holes, and a limiting guide rod. The outer diameter of the sealing plate matches the outer diameter of the pipe gallery interface. The through holes are evenly distributed along the circumferential edge of the sealing plate. The sealing plate is detachably connected to the end face of the pipe gallery interface via a fastener. A sealing gasket is sandwiched between the sealing plate and the end face of the pipe gallery interface. The limiting guide rod is fixedly connected to the end face of the pipe gallery interface and extends outward along the axial direction. The sealing plate has a guide hole that cooperates with the limiting guide rod to guide the sealing plate into accurate position.

[0009] Preferably, the sealing plate is a double-layer steel plate sandwich structure, with a fireproof rock wool layer filling between the two steel plates, and the surface of the steel plate facing the pipe gallery interface is covered with a corrosion-resistant coating. The thickness of the sealing plate is 16mm to 30mm.

[0010] Preferably, the sealing gasket is an O-ring made of corrosion-resistant rubber and is embedded in an annular groove on the end face of the pipe gallery interface.

[0011] Preferably, when the sealing component is installed, its outer surface is flush with or slightly concave with the inner wall of the working well body.

[0012] Preferably, the sidewall of the working well body is pre-embedded with anchoring steel mesh and pre-embedded steel plate. The pre-embedded steel plate is arranged around the root area of ​​each pipe gallery interface and is welded and fixed to the anchoring steel mesh.

[0013] Compared with the prior art, the beneficial effects of this application are: 1. This application adopts the method of setting no less than three pipe gallery interfaces facing different directions on the circumferential side wall of the main body of the working shaft, and the cross-sectional shape of the interface is consistent with the cross-section of the standard integrated pipe gallery. It can directly connect with the branch line or main corridor of the integrated pipe gallery to be constructed later, which improves the scalability of the urban underground pipe gallery network. It can meet the connection needs of pipe galleries with different directions without large-scale modification of the working shaft, and ensures good site conditions for the subsequent planning and construction of pipe galleries.

[0014] 2. This application uses a detachable sealing component, which can be quickly disassembled and assembled by a single person within 5 minutes without damaging the overall structure of the working well, greatly improving construction efficiency. At the same time, by setting a sealing gasket to form a radial seal, the interface is effectively waterproofed and sealed, ensuring the stability of the internal environment of the working well. Attached Figure Description

[0015] Figure 1This is a schematic diagram in this application; Figure 2 This is a schematic diagram showing the removal of the sealing plate of the multi-functional working well in the utility tunnel in this application; Figure 3 For this application Figure 2 A magnified diagram of point A in the middle.

[0016] Among them, 10 is the main body of the working well; 11 is the pipe gallery interface; 20 is the reserved outgoing sleeve; 21 is the end cap; 30 is the sealing component; 31 is the sealing plate; 32 is the through hole; 33 is the fastener; 34 is the sealing gasket; 35 is the limit guide rod; and 36 is the guide hole. Detailed Implementation

[0017] Reference Figure 1 - Figure 3 A multi-functional working shaft for a utility tunnel includes a working shaft body 10, used for initiating or receiving pipe jacking construction. The working shaft body 10 is an integral reinforced concrete structure. Multiple utility tunnel interfaces 11 are provided on the circumferential sidewalls of the working shaft body 10 and extend in different directions for connecting with the branch lines or main corridors of the integrated utility tunnels to realize the expansion and connection of the utility tunnel network. The inner port of each utility tunnel interface 11 is located in the internal cavity of the working shaft body 10, and each utility tunnel interface 11 is provided with a detachable sealing component 30 at its inner port.

[0018] In this embodiment, during the construction of urban underground integrated pipe gallery, the multi-functional working shaft of the pipe gallery is mainly used for the initiation or reception of pipe jacking construction. When pipe jacking construction is carried out, the pipe jacking machine starts from the main body 10 of the working shaft and performs jacking operations along the predetermined route to complete the laying of the pipe. When receiving, the pipe jacking machine jacks from the other end of the working shaft into the main body 10 of this working shaft to realize the connection of the pipe.

[0019] For the connection of subsequent integrated utility tunnel branches or main tunnels, since the working shaft body 10 has at least three utility tunnel interfaces 11 facing different directions on its circumferential sidewalls, and the cross-sectional shape of these interfaces is consistent with the cross-section of the standard integrated utility tunnel, it can directly connect with subsequent utility tunnels with different orientations, which improves the flexibility and adaptability of utility tunnel construction, reduces the amount of modification work during subsequent utility tunnel construction, and lowers construction costs.

[0020] Before docking, the sealing component 30 installed on the pipe gallery interface 11 is in the installation state, which plays a role in sealing and protection. When docking is required, a single person can quickly remove the sealing component 30 within 5 minutes. After removal, the pipe gallery interface 11 can be used as the standard docking end face of the subsequent pipe gallery, ensuring good site conditions for the subsequent planning and construction of the pipe gallery.

[0021] As a preferred embodiment, multiple pre-installed cable sleeves 20 are also included. These pre-installed cable sleeves 20 are installed through the side wall of the working well body 10 for later threading of cables, communication cables, or water supply and drainage pipes, facilitating connection with subsequent wiring fittings or sealing joints. Multiple pre-installed cable sleeves 20 are evenly distributed circumferentially along the working well body 10. Each pre-installed cable sleeve 20 includes a rigid outer tube and a corrosion-resistant metal lining embedded in the inner wall of the rigid outer tube. The corrosion-resistant metal lining has internal threads at both ends for connection with subsequent wiring fittings or sealing joints. A removable end cap 21 is provided at the end of each pre-installed cable sleeve 20. The end cap 21 is connected to the anti-corrosion metal lining by an internal thread. The inner wall of the end cap 21 is fitted with a sealing gasket for waterproof sealing, which is used to maintain water tightness and air tightness when not in use. At the same time, it provides convenience for subsequent line laying and avoids damage to the working well structure by re-drilling holes. When not in use, the detachable end cap 21 at the port achieves waterproof sealing by threaded connection and setting of sealing gasket, maintaining water tightness and air tightness. When it is necessary to introduce cables, communication cables or water supply and drainage pipes, it is only necessary to remove the end cap 21 and pass the line through the reserved outgoing sleeve 20. There is no need to make additional holes in the main body 10 of the working well, thus avoiding damage to its overall structure.

[0022] As a preferred approach, the number of pipe gallery interfaces 11 shall not be less than three, arranged in orthogonal or oblique directions respectively. The cross-sectional shape of the pipe gallery interface 11 shall be consistent with the cross-section of the standard integrated pipe gallery, which shall be a circular, rectangular or arc-shaped flat-bottom structure. The wall thickness of the pipe gallery interface 11 shall be consistent with the side wall of the working well body 10, forming a continuous stress structure.

[0023] As a preferred embodiment, the sealing assembly 30 includes a sealing plate 31, through holes 32, and a limiting guide rod 35. The outer diameter of the sealing plate 31 matches the outer diameter of the pipe gallery interface 11, and its center has an inwardly convex profile that matches the inner edge shape of the pipe gallery interface 11, used to seal the pipe opening and prevent rainwater, debris, etc. from entering the working well. The through holes 32 are evenly distributed on the circumferential edge of the sealing plate 31. The sealing plate 31 is detachably connected to the end face of the pipe gallery interface 11 by a fixing member 33, so that the sealing plate 31 can be firmly installed on the pipe gallery interface 11, and can be removed when necessary. In addition to being easy and quick to operate, meeting the construction needs of subsequent pipe gallery connection, a sealing gasket 34 is sandwiched between the sealing plate 31 and the end face of the pipe gallery interface 11. The limiting guide rod 35 is fixedly connected to the end face of the pipe gallery interface 11 and extends outward along the axial direction. The sealing plate 31 is provided with a guide hole 36 that cooperates with the limiting guide rod 35, which is used to quickly position and center the sealing plate 31 during installation, improving the installation accuracy and efficiency of the sealing plate 31, ensuring that the sealing plate 31 can be accurately installed in place, and guaranteeing the sealing effect and structural stability.

[0024] As a preferred method, the sealing plate 31 has a double-layer steel plate sandwich structure, with a fireproof rock wool layer filling between the two steel plates. The steel plate surface facing the pipe gallery interface 11 is covered with a corrosion-resistant coating, which is an epoxy resin anti-corrosion coating. The thickness of the sealing plate 31 is 16mm to 30mm. The sealing plate 31 can be disassembled and assembled by a single person within 5 minutes without damaging the overall structure of the working well body 10 by disassembling and assembling the sealing component 30. After complete disassembly, the pipe gallery interface 11 can be used as the standard docking end face for subsequent pipe galleries.

[0025] As a preferred method, the sealing gasket 34 is an O-ring made of corrosion-resistant rubber, which is embedded in the annular groove opened on the end face of the pipe gallery interface 11. When the sealing plate 31 is pressed, the O-ring undergoes radial compression deformation to form a dynamic sealing structure, which is used to achieve the waterproof sealing performance of the interface and maintain the stability of the internal environment of the working well.

[0026] As a preferred method, when the sealing component 30 is installed, its outer surface is flush with or slightly concave with the inner wall of the working well body 10, so as to avoid interference with the passage of personnel or the arrangement of equipment in the well and improve the usability of the internal space of the working well.

[0027] As a preferred method, the working shaft body 10 has pre-embedded anchor steel mesh and pre-embedded steel plates in the side wall. The pre-embedded steel plates are arranged around the root area of ​​each pipe gallery interface 11 and welded to the anchor steel mesh. This is used to enhance the shear resistance and leakage resistance of the connection between the pipe gallery interface 11 and the working shaft body 10, ensure the structural strength and sealing reliability of the working shaft body 10 as a whole and the pipe gallery interface 11, and withstand various loads and underground environment pressures during the pipe jacking construction process, thus ensuring the stability and safety of the working shaft.

Claims

1. A multi-functional working shaft for a utility tunnel, comprising a working shaft body (10), characterized in that: The main body (10) of the working well is an integral reinforced concrete structure. Multiple pipe gallery interfaces (11) are provided on the circumferential sidewall of the main body (10) and extend in different directions for connecting with the branch line or main corridor of the integrated pipe gallery to be constructed later. The inner port of each pipe gallery interface (11) is located in the internal cavity of the main body (10). Each pipe gallery interface (11) is provided with a detachable sealing component (30) at its inner port.

2. The multifunctional working well of pipe gallery according to claim 1, characterized in that, It also includes multiple reserved cable outlet sleeves (20), which are installed through the side wall of the working well body (10). There are multiple reserved cable outlet sleeves (20), which are evenly distributed along the circumference of the working well body (10). Each reserved cable outlet sleeve (20) includes a rigid outer tube and a corrosion-resistant metal lining embedded in the inner wall of the rigid outer tube. The corrosion-resistant metal lining has internal threads at both ends for connection with subsequent cable fittings or sealing joints. The port of the reserved cable outlet sleeve (20) is provided with a detachable end cap (21), which is connected to the internal thread of the corrosion-resistant metal lining.

3. The multi-functional working well of pipe gallery according to claim 2, characterized in that, The number of pipe gallery interfaces (11) is no less than three, arranged in orthogonal or oblique directions respectively. The cross-sectional shape of the pipe gallery interface (11) is consistent with the cross-section of the standard integrated pipe gallery, which is a circular, rectangular or arc-shaped top-flat bottom structure. The wall thickness of the pipe gallery interface (11) is consistent with the side wall of the working well body (10).

4. The multi-functional working well of pipe gallery according to claim 1, characterized in that, The sealing assembly (30) includes a sealing plate (31), a through hole (32), and a limiting guide rod (35). The outer diameter of the sealing plate (31) matches the outer diameter of the pipe gallery interface (11). The through hole (32) is evenly distributed on the circumferential edge of the sealing plate (31). The sealing plate (31) is detachably connected to the end face of the pipe gallery interface (11) through a fastener (33). A sealing gasket (34) is sandwiched between the sealing plate (31) and the end face of the pipe gallery interface (11). The limiting guide rod (35) is fixedly connected to the end face of the pipe gallery interface (11) and extends outward along the axial direction. The sealing plate (31) has a guide hole (36) that cooperates with the limiting guide rod (35).

5. The multi-functional working well of pipe gallery according to claim 4, characterized in that, The sealing plate (31) is a double-layer steel plate sandwich structure, with a fireproof rock wool layer filling between the two steel plates, and the surface of the steel plate facing the pipe gallery interface (11) is covered with a corrosion-resistant coating. The thickness of the sealing plate (31) is 16mm to 30mm.

6. The multi-functional working well of pipe gallery according to claim 5, characterized in that, The sealing gasket (34) is an O-ring made of corrosion-resistant rubber and is embedded in the annular groove opened on the end face of the pipe gallery interface (11).

7. A multi-functional working well for a utility tunnel according to claim 1, characterized in that, When installed, the outer surface of the sealing component (30) is flush with or slightly concave to the inner wall of the working well body (10).

8. The multi-functional working well of pipe gallery according to claim 1, characterized in that, The working well body (10) has pre-embedded anchor steel mesh and pre-embedded steel plate in the side wall. The pre-embedded steel plate is arranged around the root area of ​​each pipe gallery interface (11) and welded and fixed to the anchor steel mesh.

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