Jacking pipe and jacking construction structure thereof

Abstract

The utility model discloses a jacking pipe and a jacking construction structure thereof. The jacking pipe comprises at least two prefabricated pipe joints, the prefabricated pipe joints are distributed in the axial direction, and every two adjacent prefabricated pipe joints are connected; the sliding layer is coated on each prefabricated pipe joint along the axial direction of the prefabricated pipe joint; at least two sets of fixing assemblies are arranged on each prefabricated pipe joint, and the fixing assemblies are evenly distributed in the axial direction of the prefabricated pipe joints and used for fixing the sliding layer to the prefabricated pipe joints. The sliding layer reduces the friction resistance between the pipeline and the soil layer, and meanwhile, the sliding layer is fixed on the prefabricated pipe joint through the fixing assembly, so that the strength and reliability of the whole structure of the jacking pipe are enhanced, the influence of the soil layer on a prefabricated pipe joint connector is reduced, and the phenomenon that due to uneven settlement of the soil layer, the pipeline is damaged is avoided. And the service life of the pipeline is prolonged through the sliding layer, the structure is simple, the construction quality and efficiency are guaranteed, the maintenance cost is reduced, and the engineering safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a pipe jacking and a jacking construction structure thereof. Background Art

[0002] Pipe jacking is an advanced trenchless or minimally excavated pipeline laying technology that avoids the ground damage, traffic disruption, and environmental impacts associated with traditional excavation. Pipe jacking primarily relies on a jacking structure installed within the working pit. By generating a powerful jacking force, it overcomes the friction between the pipe and the surrounding soil, gradually pushing the jacking pipe into the soil along a preset slope while simultaneously removing the excavated earth. During operation, as the jacking structure progresses, the first pipe segment must complete its penetration into the soil before the second segment is placed in, continuing this process, forming a continuous jacking pipeline system. However, the friction between the jacking pipe and the soil during jacking affects the progress and quality of the jacking construction.

[0003] In order to reduce friction, the traditional method is to apply lubricant to the surface of the jacking pipe or spray water on the inner wall of the channel to convert the soil layer into a moist mud slurry, thereby reducing the friction resistance of the jacking. However, jacking construction often requires long-distance and long-term sliding in the soil layer. The lubricant applied to the surface of the jacking pipe tends to quickly fail, resulting in a short-term lubrication effect. When the lubrication fails, the resistance to the jacking of the jacking pipe will increase significantly, and the construction difficulty will also increase accordingly. Although converting the soil layer on the inner wall of the channel into a moist mud slurry solves the problem of the lubricant's easy failure over time, most of the existing jacking pipe sections do not adopt special connection measures, but only rely on rubber waterstops between the interfaces for water stopping and splicing. Although this connection method can meet basic water leakage prevention and connection requirements to a certain extent, in the case of complex geological conditions or harsh construction conditions, the pipe sections are prone to loosening, which in turn causes the pipe sections to fall off and leak, seriously affecting the construction quality and subsequent use of the jacking pipe. Utility Model Content

[0004] The purpose of the utility model is to provide a jacking pipe and a jacking construction structure thereof, so as to solve the problems in the prior art of large friction between the jacking pipe and the soil layer on the inner wall of the channel, easy loosening of the jacking pipe joints, resulting in pipe joint falling off and water leakage.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A pipe jacking device, comprising:

[0007] At least two prefabricated pipe sections, each of the prefabricated pipe sections is distributed along the axial direction, and two adjacent prefabricated pipe sections are connected;

[0008] a sliding layer, the sliding layer being coated on each of the prefabricated pipe segments along the axial direction of the prefabricated pipe segments;

[0009] Each of the prefabricated pipe segments is provided with at least two groups of fixing components, and the fixing components are evenly distributed along the axial direction of each of the prefabricated pipe segments and are used to fix the sliding layer on each of the prefabricated pipe segments.

[0010] According to the above technical means, the surface of the sliding layer is smooth. By coating the sliding layer on the pipe formed by connecting the prefabricated pipe sections in sequence, the friction between the pipe and the soil layer is reduced during the jacking construction project, thereby reducing the jacking resistance and improving the construction efficiency. At the same time, the sliding layer is evenly fixed on the pipe formed by connecting the prefabricated pipe sections in sequence through the fixing assembly, which not only enhances the strength and reliability of the overall structure of the jacking pipe, ensures the stability and durability of the sliding layer, but also reduces the influence of the soil layer on the interface of the prefabricated pipe section, prevents the loosening, disconnection and leakage of the interface of the prefabricated pipe section due to uneven settlement of the soil layer, improves the firmness and tightness of the connection of the interface of the prefabricated pipe section, and the sliding layer as the external structural layer of the jacking pipe also improves the service life of the pipe. The structure is simple, ensures construction quality and efficiency, reduces maintenance costs, and ensures project safety.

[0011] Furthermore, the prefabricated pipe segment is a cylindrical ring structure.

[0012] According to the above technical means, the prefabricated pipe segment is a concrete pipe segment with a cylindrical ring structure. The cylindrical ring structure has excellent mechanical properties and stability, can withstand large jacking force and soil pressure, ensures that the jacking pipe is not easily deformed or damaged during construction, improves the reliability and safety of the overall structure, and is easy to splice and install, improves construction efficiency, reduces disturbance and damage to the soil layer, and is conducive to maintaining the stability and integrity of the soil layer.

[0013] Furthermore, the sliding layer is an arc-shaped structure, and the sliding layer is coated on the bottom of the prefabricated pipe segment.

[0014] According to the above technical means, the sliding layer adopts an arc-shaped structure, so that when it is wrapped around the bottom of the prefabricated pipe segment, it fits more closely with the prefabricated pipe segment with a cylindrical ring structure, which not only improves the stability and firmness of the overall structure, but also reduces the friction resistance between the jacking pipe and the soil layer during the jacking process, reduces the energy consumption required for jacking, and ensures the smooth progress of the jacking construction and the quality of the project.

[0015] Furthermore, each group of the fixing components includes at least two anchors, and the anchors are evenly distributed along the circumference of the prefabricated pipe segment and fix the sliding layer to the bottom of the prefabricated pipe segment.

[0016] According to the above technical means, the anchors are evenly distributed along the circumference of the arc-shaped sliding layer, ensuring a close fit and a firm connection between the sliding layer and the prefabricated pipe segment. This not only enhances the stability and durability of the sliding layer and prevents it from falling off or shifting during construction, but also reduces the potential damage to the prefabricated pipe segment structure by dispersing the pressure of the fixed points. In addition, multiple prefabricated pipe segments are tightly combined with the arc-shaped sliding layer through the anchors, further improving the overall stiffness, deformation resistance and stability of the jacking pipe during the jacking process.

[0017] Furthermore, the sliding layer is made of flexible metal material.

[0018] According to the above technical means, flexible metal materials have excellent wear resistance, corrosion resistance and deformation ability. Using flexible metal materials as sliding layers can not only better adapt to the terrain undulations and changes in soil pressure, provide a smoother and more continuous sliding surface, thereby reducing friction resistance during pipe jacking construction, improving construction efficiency, enhancing the stability and durability of the overall structure, ensuring construction safety, but also reducing the potential damage to the pipe joints caused by uneven settlement of the soil layer, extending the overall service life of the pipe jacking, reducing the frequency of maintenance and replacement, and thus reducing construction costs.

[0019] Furthermore, the sliding layer is galvanized iron sheet.

[0020] According to the above technical means, the galvanized iron sheet has a smooth surface and moderate hardness through galvanizing treatment, and has the advantages of high durability, corrosion resistance, flexibility, plasticity and low price. The use of galvanized iron sheet as the sliding layer is not only convenient and fast to install, but also can improve the sliding efficiency of the jacking construction and reduce friction resistance. At the same time, with its excellent durability and corrosion resistance, it effectively extends the service life of the sliding layer, reduces maintenance and replacement costs, and ensures the stability and safety of the construction process.

[0021] A jacking construction structure according to the above-mentioned jacking pipe includes a jacking machine and a jack, wherein the jacking machine is used to dig a jacking pipe channel; the jacking machine and the jack are respectively located at both ends of the prefabricated pipe section, and the jack is used to push each prefabricated pipe section to move axially along the channel.

[0022] According to the above technical means, during operation, by arranging a pipe jacking machine and a jack in the working well, the pipe jacking machine digs the pipe jacking channel, and the jack pushes the pipe jacking machine to move smoothly along the axial direction of the preset channel through its telescopic end when the pipe jacking machine is digging. When the pipe jacking machine digs the channel to a certain length, a sliding layer (galvanized iron sheet) is laid at the bottom of the channel, and a prefabricated pipe section is placed between the pipe jacking machine and the telescopic end of the jack, and the sliding layer is fixed to the prefabricated pipe section by anchoring. Then the telescopic end of the jack pushes the prefabricated pipe section and the pipe jacking machine to continue to advance smoothly along the axial direction of the preset channel. The above process is repeated, so that each prefabricated pipe section is pushed into the channel one by one to form a continuous pipeline to realize pipeline burial, which not only improves the efficiency and accuracy of pipe jacking construction, but also ensures the stability, continuity and controllability of the construction process, reduces manpower requirements, reduces construction risks and costs, and provides a strong guarantee for the smooth progress of pipe jacking construction.

[0023] Furthermore, it also includes a reel machine, which is installed in the working shaft and is used to reel the sliding layer.

[0024] According to the above technical means, a sliding layer (such as galvanized iron sheet) is wound on the reel. By arranging the reel in the working well, the sliding layer material can be collected and released in an orderly manner to ensure that the sliding layer always remains flat and fits tightly to the pipeline during the advancement of the pipe jacking machine, which not only reduces friction resistance but also improves construction efficiency. Specifically, when working, the reel is installed under the jack, one end of the sliding layer is connected to the pipe jacking machine, and the other end is wound on the reel. As the pipe jacking machine advances, the reel unwinds the sliding layer, so that the sliding layer is pulled by the pipe jacking machine and laid on the bottom of the excavated pipeline channel to connect with the prefabricated pipe section to form the sliding surface of the pipeline, reducing manual intervention and reducing construction difficulty and cost.

[0025] Furthermore, it also includes a support frame, and the reel machine is installed in the working well through the support frame.

[0026] According to the above technical means, the reel machine is installed in the working pit through a support frame, which not only provides a stable support platform for the reel machine, enhances the stability of the reel machine, and ensures its stability in the working pit, but also facilitates the adjustment and positioning of the reel machine, improves construction efficiency, and reduces the time wasted due to equipment adjustment.

[0027] Furthermore, the jack is a hydraulic jack.

[0028] Based on the above technical means, hydraulic jacks have the advantages of high efficiency and labor saving, safety and stability, wide application range, simple operation, easy maintenance and strong durability.

[0029] Beneficial effects achieved by this utility model:

[0030] The sliding layer in the utility model has a smooth surface. By coating the sliding layer on the pipe formed by sequentially connecting the prefabricated pipe sections, the friction between the pipe and the soil layer is reduced during the jacking construction project, thereby reducing the jacking resistance and improving the construction efficiency. At the same time, the sliding layer is evenly fixed on the pipe formed by sequentially connecting the prefabricated pipe sections through the fixing assembly, which not only enhances the strength and reliability of the overall structure of the jacking pipe, ensures the stability and durability of the sliding layer, but also reduces the influence of the soil layer on the interface of the prefabricated pipe section, prevents the loosening, disconnection and leakage of the interface of the prefabricated pipe section due to uneven settlement of the soil layer, improves the firmness and tightness of the connection of the interface of the prefabricated pipe section, and the sliding layer, as the external structural layer of the jacking pipe, also improves the service life of the pipe. The structure is simple, ensures construction quality and efficiency, reduces maintenance costs and ensures project safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a side view of the jacking pipe of the utility model;

[0032] Figure 2 This is the construction drawing of the pipe jacking method of this utility model.

[0033] Among them, 1-prefabricated pipe section; 10-working well; 101-channel; 2-sliding layer; 3-anchor; 4-pipe jacking machine; 5-jack; 6-reel machine; 7-support frame; 8-screw.

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. Specific embodiments

[0035] It should be noted that, unless there is a conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0037] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0038] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0040] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0041] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0042] Example 1

[0043] This embodiment relates to a jacking pipe, such as Figure 1 As shown, it includes: at least two prefabricated pipe segments 1, each prefabricated pipe segment 1 is distributed along the axial direction, and two adjacent prefabricated pipe segments 1 are connected; a sliding layer 2, the sliding layer 2 is coated on each prefabricated pipe segment 1 along the axial direction of the prefabricated pipe segment 1; each prefabricated pipe segment 1 is provided with at least two groups of fixing components, each fixing component is evenly distributed along the axial direction of each prefabricated pipe segment 1, and is used to fix the sliding layer 2 on each prefabricated pipe segment 1; further, as a preferred embodiment, the sliding layer 2 is made of flexible metal material, and further, as the optimal embodiment, the sliding layer 2 is galvanized iron sheet.

[0044] This embodiment uses galvanized iron sheet as the sliding layer 2, which has a smooth surface, moderate hardness and the advantages of durability, corrosion resistance, flexibility, plasticity and low price. When used, by coating the galvanized iron sheet on the pipe formed by connecting the prefabricated pipe sections 1 in sequence, the friction resistance between the pipe and the soil layer is reduced during the jacking construction project, thereby improving the construction efficiency. At the same time, the galvanized iron sheet is firmly fixed to the prefabricated pipe section 1 through each fixing component, thereby enhancing the strength and reliability of the overall structure of the jacking pipeline. Among them, the two ends of each prefabricated pipe section 1 are respectively fixed to the sliding layer 2 by corresponding fixing components, thereby reducing the influence of the soil layer on the interface of the prefabricated pipe section 1, preventing the loosening, disconnection and leakage between the interfaces of the prefabricated pipe sections 1 due to uneven settlement of the soil layer, and improving the firmness and tightness of the interface connection of the prefabricated pipe section 1. In addition, the galvanized iron sheet as the external structural layer of the jacking pipeline also improves the service life of the pipeline. The structure is simple, construction quality and efficiency are guaranteed, maintenance costs are reduced, and project safety is guaranteed.

[0045] Furthermore, as a preferred embodiment, the prefabricated pipe segment 1 is a cylindrical ring structure; the sliding layer 2 is an arc structure, and the arc structure is coated on the bottom of the prefabricated pipe segment 1; Figure 1 As described above, in actual application, the prefabricated pipe segment 1 is a concrete pipe segment with a cylindrical ring structure, which has a stable structure and is easy to splice and install. The arc structure of the sliding layer 2 matches the curvature of the cylindrical ring structure, so that when the arc sliding layer 2 is wrapped around the bottom of the concrete pipe segment, it can fit more closely with the concrete pipe segment, which not only improves the stability and firmness of the overall structure, but also reduces the friction resistance between the jacking pipe and the soil layer during the jacking process, reduces the energy consumption required for jacking, and ensures the smooth progress of the jacking construction and the quality of the project.

[0046] In this embodiment, each set of fixing components includes at least two anchors 3 . The anchors 3 are evenly distributed along the circumference of the prefabricated pipe segment 1 and fix the sliding layer 2 to the bottom of the prefabricated pipe segment 1 .

[0047] like Figure 1 As shown, in actual application, this embodiment ensures a close fit and a firm connection between the sliding layer 2 and the prefabricated pipe segment 1 by evenly distributing the anchors 3 along the circumference of the arc-shaped sliding layer 2 and fixing the arc-shaped sliding layer 2 to the bottom of the prefabricated pipe segment 1. This not only enhances the stability and durability of the sliding layer 2 and prevents it from falling off or shifting during construction, but also reduces potential damage to the structure of the prefabricated pipe segment 1 by dispersing the pressure of the fixing points. In addition, multiple prefabricated pipe segments 1 are tightly combined with the arc-shaped sliding layer 2 through the anchors 3, further improving the overall stiffness, deformation resistance and stability of the jacking pipe during the jacking process.

[0048] Example 2

[0049] A jacking construction structure including the jacking pipe described in Example 1, such as Figure 2 As shown, it also includes a pipe jacking machine 4 and a jack 5. The pipe jacking machine 4 is used to dig a pipe jacking channel 101. The pipe jacking machine 4 and the jack 5 are respectively located at both ends of the prefabricated pipe segment 1. The jack 5 is used to push each prefabricated pipe segment 1 to move axially along the channel 101.

[0050] In this embodiment, a channel 101 is excavated stably and efficiently along a preset direction in a working well 10 through the cooperation of a pipe jacking machine 4 and a jack 5, so as to realize the burying of a pipe jacking pipeline. Furthermore, as a preferred embodiment, a reel 6 is further included. The reel 6 is installed in the working well 10, and the sliding layer 2 is wound on the reel 6 for easy transportation and laying. The jack 5 can be a hydraulic jack, which has the advantages of high efficiency and labor saving, safety and stability, wide application range, simple operation, convenient maintenance and strong durability. Specifically, in actual application, the following stages are specifically included:

[0051] Preparation stage: First, the pipe jacking machine 4, the jack 5, and the reel 6 with the sliding layer 2 (galvanized iron sheet) wound around it are installed in the working pit 10, with the telescopic ends of the pipe jacking machine 4 and the jack 5 arranged along the axial direction of the preset channel 101; then, one end of the galvanized iron sheet is mounted on the pipe jacking machine 4 using a detachable screw 8, so that with the cooperation of the reel 6, the galvanized iron sheet can move with the movement of the pipe jacking machine 4, preparing for subsequent laying;

[0052] Propulsion stage: The telescopic end of the jack 5 pushes the pipe jacking machine 4 to move in a preset direction to dig the channel 101. As the pipe jacking machine 4 pushes, the reel 6 unwinds the galvanized iron sheet, so that under the pull of the pipe jacking machine 4, the galvanized iron sheet also moves in a preset direction to be laid flat on the bottom of the channel 101.

[0053] Lifting and fixing of the concrete pipe segment: When the pipe jacking machine 4 is advanced to 1.2 times the length of the concrete pipe segment, the concrete pipe segment is first lifted and placed between the jack 5 and the pipe jacking machine 4 using a hoisting machine, so that the concrete pipe segment corresponds to the channel 101, and the pipe jacking machine 4, the jack 5 and the concrete pipe segment abut against each other to complete the positioning; then, at both ends of the concrete pipe segment, the galvanized iron sheet is fixed to the bottom of the concrete pipe segment using anchor nails to form an external structural layer, thereby reducing the friction resistance between the concrete pipe segment and the soil layer and improving the overall structural strength;

[0054] Cycle: As the jacking construction progresses, the concrete pipe segments are pushed into the excavated channel 101 one by one, and the above-mentioned pushing, hanging and fixing operations are repeated to form a continuous pipeline. A sliding layer composed of galvanized iron sheets gradually forms at the bottom of the pipeline.

[0055] Construction completion: When the jacking pipe construction is completed, cut off the tail end of the galvanized iron sheet to end the entire construction process.

[0056] Furthermore, as a preferred embodiment, it further includes a support frame 7, and the reel 6 is installed in the working well 10 through the support frame 7; Figure 2 As shown, in actual application, the reel machine 6 is installed in the working well 10 through the support frame 7, which enhances the stability of the reel machine 6 and facilitates the adjustment and positioning of the reel machine 6.

[0057] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A pipe jacking, characterized in that: include: At least two prefabricated pipe sections (1), each of the prefabricated pipe sections (1) is arranged and distributed along the axial direction, and two adjacent prefabricated pipe sections (1) are connected; A sliding layer (2), the sliding layer (2) being coated on each of the prefabricated pipe segments (1) along the axial direction of the prefabricated pipe segments (1); Each of the prefabricated pipe sections (1) is provided with at least two groups of fixing components, and each of the fixing components is evenly distributed along the axial direction of each of the prefabricated pipe sections (1) and is used to fix the sliding layer (2) on each of the prefabricated pipe sections (1).

2. A jacking pipe according to claim 1, characterized in that: The prefabricated pipe segment (1) is a cylindrical ring structure.

3. A jacking pipe according to claim 2, characterized in that: The sliding layer (2) is an arc-shaped structure, and the sliding layer (2) is coated on the bottom of the prefabricated pipe section (1).

4. A jacking pipe according to claim 3, characterized in that: Each group of the fixing components comprises at least two anchors (3), and the anchors (3) are evenly distributed along the circumference of the prefabricated pipe section (1) and fix the sliding layer (2) to the bottom of the prefabricated pipe section (1).

5. The jacking pipe according to claim 2, characterized in that: The sliding layer (2) is made of a flexible metal material.

6. A jacking pipe according to claim 5, characterized in that: The sliding layer (2) is galvanized iron sheet.

7. A jacking construction structure comprising the jacking pipe according to any one of claims 1 to 6, characterized in that: It also includes a pipe jacking machine (4) and a jack (5), wherein the pipe jacking machine (4) is used for digging a pipe jacking channel (101); the pipe jacking machine (4) and the jack (5) are respectively located at both ends of the prefabricated pipe section (1), and the jack (5) is used for pushing each prefabricated pipe section (1) to move axially along the channel (101).

8. The pipe jacking construction structure according to claim 7, characterized in that: The utility model also comprises a reeling machine (6), which is installed in the working shaft (10) and is used for winding the sliding layer (2).

9. The pipe jacking construction structure according to claim 8, characterized in that: It also includes a support frame (7), and the reel machine (6) is installed in the working well (10) through the support frame (7).

10. The pipe jacking construction structure according to claim 7, characterized in that: The jack (5) is a hydraulic jack.

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