A construction method for opening holes between rectangular top pipe channels by using prefabricated movable components

Abstract

The application relates to the field of pipe jacking channel construction, and discloses a construction method for realizing hole opening between rectangular pipe jacking channels by using prefabricated movable components, which comprises the following steps: S1, during the jacking process of the rectangular pipe jacking channels, specially-made pipe segments are arranged at the same position of the mutually-parallel rectangular pipe jacking channels; S2, after the jacking of the rectangular pipe jacking channels is completed, jacking devices are installed at the rear side of the ring frame movable prefabricated components on the inner side of the specially-made pipe segments, the specially-made pipe segments on the ring frame movable prefabricated components are jacked into the specially-made pipe segments by the jacking devices; S3, after the ring frame movable prefabricated components are aligned with the inner edges of another specially-made pipe segment, the ring frame movable prefabricated components are connected by using connecting devices, and filling bodies are injected to completely connect the two specially-made pipe segments and the ring frame movable prefabricated components; and S4, after the ring frame movable prefabricated components participate in force bearing, the side walls of the two end holes and the earth between the side walls are removed, and the hole opening between the rectangular pipe jacking channels is realized. The construction risk of hole opening between the pipe jacking channels is solved, the engineering safety is enhanced, and the engineering construction time and construction cost are saved.

Description

Technical Field

[0001] This invention relates to the field of pipe jacking tunnel construction technology, specifically a construction method for creating openings between rectangular pipe jacking tunnels using prefabricated movable components. Background Technology

[0002] Pipe jacking is a trenchless construction method, referring to a pipeline installation technology that involves little or no excavation. In pipe jacking, the jacking force generated by jacking equipment within the working pit overcomes the friction between the pipe and the surrounding soil, pushing the pipe into the ground at the designed slope, and then removing the excavated soil. After one section of pipe is jacked into the soil, the second section is jacked in, and so on. The principle is to use the thrust from the main jacking cylinder and intermediate sections (such as pipe sections and relay sections) to advance the tool pipe or tunneling machine from the working pit through the soil to the receiving pit, where it is then lifted. The pipe follows closely behind the tool pipe or tunneling machine, buried between the two pits.

[0003] With the comprehensive utilization of pipe jacking construction methods in my country, the diameter of pipes jacked tends to be larger, and more and more parallel implementation schemes of multiple pipe jacking are emerging. At present, there are few cases of opening between rectangular pipe jacking channels. The construction method has high requirements for construction geology and construction technology. At the same time, the construction period is long, the degree of mechanization is low, and the risk is high, which urgently needs to be improved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a construction method for creating openings between rectangular pipe jacking channels using prefabricated movable components. This method solves the construction risks associated with creating openings between pipe jacking channels, enhances project safety, and saves construction time and costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a construction method for creating openings between rectangular jacking pipe channels using prefabricated movable components, comprising the following steps:

[0006] S1. During the jacking process of the rectangular jacking channel, specially made pipe sections are set at the same position of the parallel rectangular jacking pipes.

[0007] S2. After the rectangular pipe jacking channel is completed, a jacking device is installed on the rear side of the movable precast ring inside a special pipe section. The installed jacking device is used to push the special pipe segments on the movable precast ring towards another special pipe section.

[0008] S3. After the movable precast component of the top ring frame is aligned with the inner edge of another special pipe section, it is connected using a connecting device, and the filling material is injected through the grouting hole of the special pipe segment to completely connect the two special pipe sections with the movable precast component of the ring frame.

[0009] S4. After the precast ring frame components participate in the stress, the side walls and soil at both ends of the opening are broken to create openings between the rectangular pipe jacking channels.

[0010] Preferably, the width of the specially designed pipe section is greater than the width of the ordinary pipe section.

[0011] Preferably, the jacking device includes a jack.

[0012] Preferably, the connecting device includes pre-embedded bolts and nuts.

[0013] Preferably, the filler includes epoxy resin and inert slurry.

[0014] This invention provides a construction method for creating openings between rectangular jacking pipe channels using prefabricated movable components. It offers the following advantages:

[0015] This invention involves inserting specially designed pipe sections into existing pipe sections. By creating openings in these specially designed pipe sections to connect the pipes, and during the opening process, a prefabricated ring-frame component prefabricated within the specially designed pipe section is pushed into the prefabricated hole of an adjacent specially designed pipe section using a propulsion device. This increases the connectivity and passage capacity of the pipeline while ensuring its stability and safety. Compared to traditional pipe opening methods, this significantly reduces the destructiveness of pipe openings, avoids other damage and problems during the opening process, and also improves the stability and reliability of the pipeline. It solves the construction risks associated with openings between pipe jacking channels, enhances project safety, and saves construction time and costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the planar relationship of the parallel rectangular pipe jacking tunnel of the present invention;

[0017] Figure 2 This is a schematic diagram of the planar relationship of the parallel rectangular pipe jacking tunnel sections after the completion of the jacking process of the present invention;

[0018] Figure 3 This is a schematic cross-sectional view of a specially made pipe section after the jacking of the tunnel section of the present invention is completed;

[0019] Figure 4 This is a schematic longitudinal section of the specially designed pipe section of the present invention;

[0020] Figure 5 This is a schematic longitudinal section of the second specially designed pipe section of the present invention;

[0021] Figure 6 This is a schematic diagram of the cross-section of the specially designed pipe section and the installation jack of the present invention;

[0022] Figure 7 This is a schematic diagram of the specially designed pipe section and the installation jack of the present invention;

[0023] Figure 8 This is a schematic diagram of the cross section connecting the prefabricated movable pipe section of the present invention with the specially made pipe section two after the prefabricated movable pipe section is pushed into place;

[0024] Figure 9 This is a schematic diagram of the connection between the prefabricated movable pipe section and the specially made pipe section two after the prefabricated movable pipe section of the present invention has been pushed out;

[0025] Figure 10 This is a schematic diagram of the cross-section of the rectangular pipe jacking tunnel connection opening before it is opened, according to the present invention.

[0026] Figure 11 This is a schematic diagram of the cross-section of the rectangular pipe jacking tunnel connection opening after it is opened according to the present invention;

[0027] Figure 12 This is a schematic diagram of the rectangular jacking tunnel connection opening after it is opened, according to the present invention.

[0028] Among them, 1. Ordinary pipe section; 2. Special pipe section one; 3. Special pipe section two; 4. Ring frame movable precast component one; 5. Ring frame movable precast component two; 6. Jacking device; 7. Filling body; 8. Reserved opening; 9. Soil between pipe jacking channels. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example:

[0031] Please see the appendix Figure 1 -Appendix Figure 12 This invention provides a construction method for creating openings between rectangular jacking pipe channels using prefabricated movable components, comprising the following steps:

[0032] (1) During the jacking process of the rectangular pipe jacking channel, special pipe section 1 2 and special pipe section 2 3 are set at the same position relative to each other for the parallel rectangular pipe jacking pipes, and ordinary pipe section 1 is used for the other pipe sections that do not have connecting openings.

[0033] In this embodiment, openings and connecting pipes need to be set at the special pipe section. In order to ensure smooth flow and tight connection between pipes, the width of the special pipe section needs to be appropriately expanded to install and connect various types of pipes and equipment. Therefore, the width of the special pipe section is set to be greater than the width of the ordinary pipe section.

[0034] (2) After the rectangular pipe jacking channel is completed, the jacking device 6 is installed on the rear side of the movable precast component 4 inside the special pipe section 2. The special pipe segment on the movable precast component is pushed towards the special pipe section 3 using the installed jacking device 6.

[0035] In this embodiment, the jacking device 6 is a jack or a device that can push the special tube segments on the movable precast component of the ring frame to make lateral displacement.

[0036] (3) The movable precast component 14 of the ring frame is pushed into the special pipe section 23 under the force of the jacking device 6, and the movable precast component 25 of the ring frame is pushed out during the jacking process;

[0037] In this embodiment, during the segment jacking process, the function of the first movable prefabricated component 4 of the ring frame is to fix the segment and prevent it from tilting, shifting or being damaged during the jacking process. The second movable prefabricated component 5 of the ring frame will be pushed outward to better accept the jacking and fixing of subsequent segments.

[0038] (4) After the inner edge of the movable precast part 4 of the ring frame is aligned with the inner edge of the special pipe section 2, the special pipe segment on the movable precast part 4 of the ring frame is connected to the two special pipe sections using the connecting device, and the filling body 7 is injected through the grouting hole of the special pipe segment so that the special pipe section is completely connected to the special pipe segment on the movable precast part 4 of the ring frame and the two special pipe sections.

[0039] In this embodiment, when the second special pipe section is aligned with the special pipe segment on the movable precast component 4 of the ring frame, they are connected by a connecting device (i.e., pre-embedded bolts and nuts). This ensures a tight fit between the special pipe segment and the special pipe section, preventing loosening or detachment during startup and use. In addition, the filling material 7 is injected to fill the gap between the special pipe segment and the special pipe section. This increases the sealing and stability of the entire jacking pipe, improves its durability, and prevents breakage or leakage due to pipe loosening during use.

[0040] Furthermore, by simultaneously performing bolt connections and grouting, the reinforcement and fixing of the tunnel segments can be completed in one go, which not only reduces the construction cycle but also saves construction costs and human resources, and improves construction efficiency and quality.

[0041] In some embodiments, the filler 7 may be epoxy resin or inert slurry;

[0042] Epoxy resin is a polymer material with excellent chemical corrosion resistance and mechanical properties, as well as good adhesion and wear resistance. In the filling of rectangular jacking pipe channels, epoxy resin is often used to fill gaps, reinforce pipe structure, and improve pipe stability to ensure the service life and safe operation of the pipe.

[0043] Inert grout is a concrete-like substance made by mixing cement, gravel, sand, and other materials with water and additives. In addition to filling gaps and reinforcing pipe structures, inert grout can also provide better compressive strength, reduce the adverse effects of the foundation on the pipeline, and ensure the stability of the pipeline.

[0044] (5) After the stress system is completed, open the reserved opening 8 of the pipe section and the soil 9 between the pipe jacking channels to realize the opening between the rectangular top pipe jacking channels;

[0045] In this embodiment, the force-bearing system, which involves the special pipe segments, means that the special pipe segments are used as part of the force-bearing structure of the rectangular jacking channel, instead of relying solely on the pipe sidewalls and foundation bearing capacity. This means that the special pipe segments are connected to the special pipe sections through the connecting device. To remove the sidewalls and soil between the two openings, the sidewalls and soil between the two openings need to be opened layer by layer before removal. After removal, the opening locations can be reinforced and strengthened according to design requirements to improve their load-bearing capacity and stability.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction method for creating openings between rectangular pipe jacking channels using prefabricated movable components, characterized in that, Includes the following steps: S1. During the jacking process of the rectangular jacking pipe channel, the parallel rectangular jacking pipes are equipped with special pipe sections at the same relative position; the width of the special pipe section is greater than the width of the ordinary pipe section, and the inner sides of the two special pipe sections are respectively preset with a ring frame movable prefabricated component one and a ring frame movable prefabricated component two; S2. After the rectangular pipe jacking channel is completed, a jacking device is installed on the rear side of the movable precast ring frame one inside a special pipe section. The installed jacking device is used to push the special pipe segment on the movable precast ring frame one towards another special pipe section. During the jacking process, the movable precast ring frame two inside the other special pipe section is pushed out. S3. After the inner edge of the movable precast component of the top ring frame is aligned with the inner edge of another special pipe section, the two special pipe sections are connected by a connecting device and the filling material is injected through the grouting hole of the special pipe section to completely connect the two special pipe sections with the movable precast component of the ring frame. The connecting device includes pre-embedded bolts and nuts. S4. After the precast ring frame component participates in bearing the load, the side walls and soil at both ends of the opening are broken to create openings between the rectangular pipe jacking channels.

2. The construction method for creating openings between rectangular jacking pipe channels using prefabricated movable components according to claim 1, characterized in that, The jacking device includes a jack.

3. The construction method for creating openings between rectangular jacking pipe channels using prefabricated movable components according to claim 1, characterized in that, The filler includes epoxy resin and inert slurry.

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