Outgoing line node of pipe jacking type comprehensive pipe gallery and waterproof method of outgoing line node

Abstract

The invention discloses an outgoing line node of a pipe-jacking type comprehensive pipe gallery and a waterproof method of the outgoing line node, and the outgoing line node of the pipe-jacking type comprehensive pipe gallery comprises a pipe-jacking section which comprises a pipeline; the interlayer is arranged on the pipe jacking section; a wire outlet sleeve is arranged between the pipe jacking section and the interlayer; a pipeline penetrates through the pipe jacking section and the interlayer through a wire outlet sleeve; the waterproof structure is arranged on the side wall of the interlayer and between the jacking pipe joint and the interlayer. According to the technical scheme, the cast-in-place line outgoing interlayer part is locally additionally arranged on the basis of comprehensive pipe gallery pipe jacking construction, pipe gallery line outgoing can be achieved through the interlayer even at the position where a working well is not arranged, the municipal pipeline connection requirements of users along the line are met, and meanwhile the construction efficiency is improved. The waterproof structure can effectively avoid underground water leakage at the joint of the jacking pipe joint and the cast-in-place interlayer.

Description

Technical Field

[0001] This application relates to the field of construction technology, specifically to an outlet node of a pipe jacking integrated utility tunnel and its waterproofing method. Background Technology

[0002] A pipe jacking integrated utility tunnel is an underground utility tunnel constructed using pipe jacking construction technology. By using the jacking force of jacking equipment in the working pit, prefabricated pipe sections are pushed into the ground one by one to form a channel to accommodate various municipal pipelines. It mainly consists of several parts, including the utility tunnel body, working shafts and receiving shafts, and pipe jacking equipment.

[0003] Currently, in some municipal pipeline renovation projects, besides incorporating pipelines into newly built integrated utility tunnels, there is also a need to connect the tunnels with existing underground passages. Due to the depth of existing underground passages and the presence of numerous landscaping trees on both sides of the road, it is impossible to implement integrated utility tunnels with extensive slope reduction; therefore, the pipe jacking method must be used. However, the pipe jacking method alone cannot meet the outgoing pipeline needs along the tunnel route. The existing outgoing pipeline method for pipe jacking integrated utility tunnels involves centrally setting out outlets at the pipe jacking working shafts, with pipelines exiting from inside the tunnel through these shafts to connect with external pipelines. However, this method is suitable for areas with limited surrounding conditions, making it difficult to set up multiple outlet shafts, potentially leading to overly concentrated pipeline outgoing locations and failing to meet the needs of certain pipelines exiting at specific locations. Furthermore, this outgoing pipeline method lacks effective waterproofing measures.

[0004] Therefore, how to design a pipe jacking integrated utility tunnel outlet node and its waterproofing scheme to facilitate pipeline outlet while preventing water leakage inside the tunnel has become an urgent problem to be solved in this field. Summary of the Invention

[0005] In view of this, in the first aspect, this application proposes an outlet node for a pipe jacking integrated utility tunnel to facilitate the outlet of pipelines within the tunnel, comprising:

[0006] Pipe jacking section, wherein the pipe jacking section includes pipelines;

[0007] A sandwich layer is disposed on the jacking pipe section;

[0008] A cable outlet sleeve is provided between the jacking pipe section and the interlayer;

[0009] The pipeline passes through the jacking pipe section and the interlayer using the outlet sleeve;

[0010] The waterproof structure includes a first waterproof structure at the joint of the jacking pipe section, a second waterproof structure around the opening where the jacking pipe section connects to the interlayer, and a third waterproof structure on the outer surface of the interlayer.

[0011] Preferably, a channel is also provided between the jacking pipe section and the interlayer.

[0012] More preferably, a steel ladder is provided in the jacking pipe section and the channel.

[0013] More preferably, a handle is provided in the mezzanine at a position corresponding to the steel ladder.

[0014] Preferably, the pipe joint interface adopts an F-type socket type, and the first waterproof structure includes:

[0015] At the joint of the pipe section interface, a rubber ring and a two-component polysulfide sealant are used for caulking.

[0016] Preferably, the second waterproof structure includes:

[0017] A water-swellable rubber strip is provided around the opening where the top of the jacking pipe section connects to the bottom of the interlayer.

[0018] Preferably, the third waterproof structure includes:

[0019] A sidewall waterproofing layer consisting of polyethylene polypropylene roll material and polymer cement waterproofing adhesive is provided on the outer surface of the interlayer.

[0020] More preferably, the sidewall waterproof layer extends downward to the sidewall of the opening in the top plate of the jacking pipe section.

[0021] In a second aspect, this application also provides a waterproofing method for the outlet node of a pipe jacking integrated utility tunnel, the method comprising:

[0022] The interface of the jacking pipe section adopts F-type socket jacking underground. At the joint of the jacking pipe section interface, rubber rings and two-component polysulfide sealant are used for caulking. The jacking pipe section body is made of self-waterproof concrete.

[0023] A cast-in-place interlayer is constructed above the jacking pipe section, and a channel and cable outlet sleeve are constructed at the bottom plate of the cast-in-place interlayer and the top plate of the jacking pipe section.

[0024] The area around the opening in the top plate of the jacking pipe section is roughened and cleaned. Water-swellable rubber strips are then pasted around the opening. Furthermore, a sidewall waterproofing layer composed of polyethylene polypropylene roll material and polymer cement waterproofing adhesive is installed on the outer surface of the cast-in-place interlayer and on the sidewall of the opening in the top plate of the jacking pipe section.

[0025] The outgoing node of the pipe jacking integrated utility tunnel provided in this application includes a pipe jacking section and a mezzanine. The mezzanine is set on top of the pipe jacking section. The pipeline passes through the pipe jacking section and is led out through the mezzanine to the outside of the mezzanine. At the same time, waterproof structures are also set on the side walls of the mezzanine and between the pipe jacking section and the mezzanine. This application utilizes the partial addition of a cast-in-place outgoing mezzanine section on the basis of the integrated utility tunnel pipe jacking construction. Even in the location where no working shaft is set, the utility tunnel can be outgoing through the mezzanine, which meets the municipal pipeline connection needs of users along the line. At the same time, the waterproof structure can also effectively prevent groundwater leakage at the connection between the pipe jacking section and the cast-in-place mezzanine.

[0026] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0028] Figure 1 A schematic diagram of the longitudinal section structure of the outlet node of the pipe jacking integrated utility tunnel according to the preferred embodiment of this application;

[0029] Figure 2 A schematic diagram of the cross-sectional structure of the outlet node of the pipe jacking integrated utility tunnel according to a preferred embodiment of this application;

[0030] Figure 3 A longitudinal structural diagram of a pipe jacking integrated utility tunnel according to a preferred embodiment of this application;

[0031] Figure 4 A flowchart illustrating a waterproofing method for a pipe jacking integrated utility tunnel according to a preferred embodiment of this application.

[0032] Attached drawings numbered: 1-Pipe jacking section; 2-Interlayer; 31-First waterproof structure; 32-Second waterproof structure; 33-Third waterproof structure; 4-Pipeline; 5-Outlet sleeve; 6-Passageway; 7-Steel ladder; 8-Handle. Detailed Implementation

[0033] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] First, such as Figure 1-3 As shown, this application proposes an outgoing node for a pipe jacking integrated utility tunnel, comprising: a pipe jacking section 1, a mezzanine 2, and a waterproof structure. The pipe jacking section 1 is a precast pipe jacking section, which can be understood as a precast pipe component that is jacked into the ground section by section along the designed axis during pipe jacking construction. The mezzanine 2 is a cast-in-place mezzanine, a structure added to the pipe jacking section 1 in this application, and can be constructed at the required location using the cast-in-place method. The waterproof structure is mainly used to prevent groundwater leakage at the connection between the pipe jacking section 1 and the mezzanine 2.

[0035] The pipe jacking section 1 includes various pipelines 4 such as power, communication, water supply and drainage. The interlayer 2 is set on the pipe jacking section 1. The pipelines 4 pass through the pipe jacking section 1, are led out through the interlayer 2, and then lead out to the ground or other facilities.

[0036] In a specific embodiment, such as Figure 3 As shown in the longitudinal section, there are six outgoing nodes, which can be understood as the connection points between the utility tunnel and external pipelines. The jacking pipe sections 1 are set at 2-meter intervals, forming the bottom layer after connection. Outgoing nodes 1, 4, and 6 have corresponding jacking working shafts on the bottom layer side, which can be used to realize the outgoing function of the utility tunnel. However, there are no usable jacking working shafts at outgoing nodes 2, 3, and 5. Therefore, after the jacking construction is completed, partial excavation is carried out, and a cast-in-place method is used to construct a mezzanine 2 at these locations. The outgoing function of the utility tunnel is realized through mezzanine 2.

[0037] A cable outlet sleeve 5 is installed between the jacking pipe section 1 and the interlayer 2, and the pipeline 4 passes through the jacking pipe section 1 and the interlayer 2 using the cable outlet sleeve 5. Preferably, a certain number of cable outlet sleeves 5 can be arranged at once on the side wall of the interlayer 2 and at the cable outlet of the jacking pipe section 1 to meet the cable outlet requirements along the pipeline corridor.

[0038] To facilitate pedestrian access, a passageway 6 can be installed between the pipe jacking section 1 and the mezzanine 2. Correspondingly, a steel ladder 7 is installed in the pipe jacking section 1 and the passageway 6, and a handle 8 is installed in the mezzanine 2 at the position corresponding to the steel ladder 7.

[0039] In addition, in this application, a first waterproof structure 31 is provided at the pipe joint of the jacking pipe section 1, a second waterproof structure 32 is provided around the opening connecting the jacking pipe section 1 and the interlayer 2, and a third waterproof structure 33 is provided on the outer surface of the interlayer 2.

[0040] In some specific implementation methods:

[0041] 1. The pipe section joint adopts an F-type socket joint. The first waterproof structure 31 includes: caulking the joint of the pipe section using a rubber ring and a two-component polysulfide sealant. The two-component polysulfide sealant is a two-component sealing material made primarily of liquid polysulfide rubber, combined with tackifying resin, vulcanizing agent, accelerator, reinforcing agent, etc. Additionally, the jacking pipe section itself can utilize self-waterproofing concrete.

[0042] II. The second waterproof structure 32 includes: a water-swellable rubber strip installed around the opening where the top of the jacking pipe section 1 connects to the bottom of the interlayer 2.

[0043] III. The third waterproof structure 33 includes: a sidewall waterproof layer composed of polyethylene polypropylene roll material and polymer cement waterproof adhesive installed on the outer surface of the interlayer 2 and the top slab opening of the jacking pipe section 1. The polyethylene polypropylene roll material is composed of polyethylene film (PE) and polypropylene non-woven fabric; the polymer cement waterproof adhesive is mainly composed of cement and quartz sand, modified with polymer emulsion.

[0044] The outgoing node of the pipe jacking integrated utility tunnel provided in this application includes a pipe jacking section and a mezzanine. The mezzanine is set on top of the pipe jacking section. The pipeline passes through the pipe jacking section and is led out through the mezzanine to the outside of the mezzanine. At the same time, waterproof structures are also set on the side walls of the mezzanine and between the pipe jacking section and the mezzanine. This application utilizes the partial addition of a cast-in-place outgoing mezzanine section on the basis of the integrated utility tunnel pipe jacking construction. Even in the location where no working shaft is set, the utility tunnel can be outgoing through the mezzanine, which meets the municipal pipeline connection needs of users along the line. At the same time, the waterproof structure can also effectively prevent groundwater leakage at the connection between the pipe jacking section and the cast-in-place mezzanine.

[0045] Furthermore, based on the aforementioned outlet node structure of the pipe jacking integrated utility tunnel, this application also proposes a waterproofing method for the outlet node of the pipe jacking integrated utility tunnel. This waterproofing method can effectively prevent groundwater leakage within the utility tunnel. Figure 4 The method includes steps 410-430:

[0046] Step 410: The joint of the jacking pipe section adopts F-type socket jacking underground. At the joint of the jacking pipe section, rubber rings and two-component polysulfide sealant are used for caulking. The jacking pipe section body is made of self-waterproof concrete.

[0047] Specifically, the F-type socket connection is achieved by installing F-type socket joints at both ends of the pipe that can be inserted into each other, connecting the joints of two adjacent pipes, and installing a sealing ring at the connection point. The sealing ring is used to press against the F-type socket joint at the connection point to achieve sealing and fixation.

[0048] In this application, the joints of the pipe jacking sections are connected to other pipe jacking sections underground using an F-type socket joint. At the joint seams, rubber rings and two-component polysulfide sealant are used for caulking to create waterproofing. Furthermore, the pipe jacking sections themselves utilize self-waterproofing concrete.

[0049] Step 420: Cast an interlayer in the upper part of the jacking pipe section, and construct a channel and outgoing sleeve at the bottom plate of the cast-in-place interlayer and the top plate of the jacking pipe section.

[0050] Specifically, the connection between the cast-in-place sandwich floor slab and the top slab of the jacking pipe section requires a manhole (passage) and a wiring hole (outlet sleeve). Therefore, the cast-in-place sandwich floor slab and the top slab of the jacking pipe section are provided with openings for docking.

[0051] Step 430: Roughen and clean the area around the opening in the top plate of the jacking pipe section, attach water-swellable rubber strips around the opening, and install a sidewall waterproof layer composed of polyethylene polypropylene roll material and polymer cement waterproof adhesive on the outer surface of the cast-in-place interlayer and the sidewall of the opening in the top plate of the jacking pipe section.

[0052] Specifically, water-swellable rubber strips are used to create a waterproof effect at the connection openings of the cast-in-place interlayer pipe sections. The sidewall waterproofing layer is mainly used to protect the sidewalls of the cast-in-place interlayer and the sidewalls of the openings.

[0053] According to the waterproofing method for the outlet node of the pipe jacking integrated utility tunnel provided in this application, the pipe jacking section and the cast-in-place interlayer adopt two waterproofing systems. The pipe jacking section mainly adopts the self-waterproofing of concrete and the rubber ring of F-shaped socket joint and the two-component polysulfide sealant for caulking. The cast-in-place interlayer mainly adopts the waterproofing of the outer polyethylene polypropylene roll. At the same time, there is also a corresponding waterproofing structure between the pipe jacking section and the cast-in-place interlayer, which can effectively avoid water leakage in the pipe jacking integrated utility tunnel.

[0054] The preferred embodiments of this application have been described in detail above. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0055] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0056] Furthermore, various different embodiments of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed by this invention.

Claims

1. A cable outlet node for a pipe jacking integrated utility tunnel, characterized in that, The outgoing nodes of the pipe jacking integrated utility tunnel include: Pipe jacking section (1), wherein the pipe jacking section (1) includes pipeline (4); A sandwich layer (2) is disposed on the jacking pipe section (1); A cable outlet sleeve (5) is provided between the jacking pipe section (1) and the interlayer (1); The pipeline (4) passes through the jacking pipe section (1) and the interlayer (2) using the outlet sleeve (5); The waterproof structure includes a first waterproof structure (31) at the pipe joint of the jacking pipe section (1), a second waterproof structure (32) around the opening of the jacking pipe section (1) that connects with the interlayer (2), and a third waterproof structure (33) on the outer surface of the interlayer (2).

2. The outgoing node of the pipe jacking integrated utility tunnel according to claim 1, characterized in that, A channel (6) is also provided between the jacking pipe section (1) and the interlayer (2).

3. The outlet node of the pipe jacking integrated utility tunnel according to claim 2, characterized in that, Steel ladders (7) are installed in the jacking pipe section (1) and the channel (6).

4. The outgoing node of the pipe jacking integrated utility tunnel according to claim 3, characterized in that, In the mezzanine (2), a handle (8) is provided at the position corresponding to the steel ladder (7).

5. The outgoing node of the pipe jacking integrated utility tunnel according to claim 1, characterized in that, The pipe joint interface adopts an F-type socket type, and the first waterproof structure (31) includes: At the joint of the pipe section interface, a rubber ring and a two-component polysulfide sealant are used for caulking.

6. The outgoing node of the pipe jacking integrated utility tunnel according to claim 1, characterized in that, The second waterproof structure (32) includes: A water-swellable rubber strip is provided around the opening where the top of the jacking pipe section (1) connects to the bottom of the interlayer (2).

7. The outgoing node of the pipe jacking integrated utility tunnel according to claim 1, characterized in that, The third waterproof structure (33) includes: A sidewall waterproofing layer consisting of polyethylene polypropylene roll material and polymer cement waterproofing adhesive is provided on the outer surface of the interlayer (2).

8. The outlet node of the pipe jacking integrated utility tunnel according to claim 7, characterized in that, The sidewall waterproof layer extends downward to the sidewall of the opening in the top plate of the jacking pipe section (1).

9. A waterproofing method for the outlet node of a pipe jacking integrated utility tunnel, characterized in that, The method includes: The interface of the jacking pipe section adopts F-type socket jacking underground. At the joint of the jacking pipe section interface, rubber rings and two-component polysulfide sealant are used for caulking. The jacking pipe section body is made of self-waterproof concrete. A cast-in-place interlayer is constructed above the jacking pipe section, and a channel and cable outlet sleeve are constructed at the bottom plate of the cast-in-place interlayer and the top plate of the jacking pipe section. The area around the opening in the top plate of the jacking pipe section is roughened and cleaned. Water-swellable rubber strips are then pasted around the opening. Furthermore, a sidewall waterproofing layer composed of polyethylene polypropylene roll material and polymer cement waterproofing adhesive is installed on the outer surface of the cast-in-place interlayer and on the sidewall of the opening in the top plate of the jacking pipe section.

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