A pipeline relocation structure and its construction method

Abstract

This invention belongs to the field of underground engineering construction technology and discloses a pipeline relocation structure and its construction method. The pipeline relocation structure includes a first conversion well, a second conversion well, an old pipe, and a new pipe. Both the first and second conversion wells are equipped with partition walls. The partition walls divide the first conversion well into a first sealing chamber and a first water-passing culvert, and the second conversion well into a second sealing chamber and a second water-passing culvert. The first end of the new pipe is connected to the first water-passing culvert, and the second end is connected to the second water-passing culvert. During the relocation of the old pipe, the old pipe in the first and second conversion wells is removed, and then the first and second sealing chambers are sealed. This allows water in the pipeline to flow only into the new pipe through the first water-passing culvert. Water in the new pipe then flows into the second water-passing culvert and finally into the downstream pipeline. With this structure, underground drainage pipelines can be relocated without interrupting water supply, avoiding large-scale and prolonged water outages and not affecting normal production and daily life.

Description

Technical Field

[0001] This invention relates to the field of underground engineering construction technology, and in particular to a pipeline relocation structure and its construction method. Background Technology

[0002] Drainage pipelines refer to the systems of pipes and their ancillary facilities that collect and discharge sewage, wastewater, and rainwater. With the large-scale construction of cities, many other facilities need to be built in the areas traversed by some of the existing underground drainage pipelines. Therefore, these underground drainage pipelines need to be rerouted. After the new drainage pipelines are laid, the new pipelines will replace the underground drainage pipeline sections that need to be rerouted, and the upstream and downstream sections of the replaced drainage pipeline sections need to be permanently sealed.

[0003] Currently, the common method for modifying underground drainage pipes is to shut off the water supply during construction. This involves stopping the water supply to the existing pipes before construction begins, cutting off the section of the underground drainage pipes that needs to be modified, replacing it with the new drainage pipes, and then restoring the water supply after construction is completed. However, this method often results in large-scale and prolonged water outages, causing significant inconvenience to daily life and production.

[0004] Therefore, there is an urgent need for a pipeline relocation structure and its construction method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a pipeline relocation structure and its construction method to solve the problem of water outages required for underground pipeline relocation.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, a pipeline relocation structure is provided, including: a first conversion well, a second conversion well, an old pipe, and a new pipe;

[0008] Both the first and second conversion wells are equipped with partition walls. The partition walls divide the first conversion well into a first sealing chamber and a first water passage culvert, and the partition walls divide the second conversion well into a second sealing chamber and a second water passage culvert. The first end of the new pipe is connected to the first water passage culvert, and the second end of the new pipe is connected to the second water passage culvert. The old pipe passes through the first water passage culvert, the first sealing chamber, the second sealing chamber, and the second water passage culvert in sequence.

[0009] Preferably, both the first end and the second end of the new pipe are provided with a waterstop plate.

[0010] Preferably, ribs are provided at the connection between the first end of the new pipe and the first water passage culvert, and at the connection between the second end of the new pipe and the second water passage culvert.

[0011] Preferably, both the first and second water-passing culverts have waterproof partitions installed on their inner surfaces.

[0012] Preferably, both the first and second conversion wells are equipped with well covers, which are respectively sealed and installed on the top of the first and second conversion wells.

[0013] On the other hand, a pipeline relocation construction method is provided, applied to the aforementioned pipeline relocation structure, including the following steps:

[0014] S1: Construct the new pipe along the designed drainage flow path;

[0015] S2: Construct the first conversion well at the first end of the new pipe, and construct the second conversion well at the second end of the new pipe; and the new pipe is connected to both the first conversion well and the second conversion well, and the old pipe passes through the first conversion well and the second conversion well in sequence;

[0016] S3: Cut off the old pipe sections located in the first and second conversion wells, and then seal the first and second sealing chambers with concrete;

[0017] S4: Cover the top of the first conversion well and the second conversion well with well covers.

[0018] Preferably, in step S1, after the new pipe is constructed, a waterstop plate and a rib plate are prefabricated at both the first end and the second end of the new pipe.

[0019] Preferably, in step S2, the first conversion well and the second conversion well are cast in place; during casting, the waterstop plate and the rib plate at the first end of the new pipe are integrally cast with the well wall of the first conversion well, and the waterstop plate and the rib plate at the second end of the new pipe are integrally cast with the well wall of the second conversion well.

[0020] Preferably, in step S3, before using concrete to seal the first and second sealing chambers, the holes formed by the old pipes in the partition wall are sealed with steel plates, and the steel plates are fixed with adjustable top supports.

[0021] Preferably, in step S4, after the manhole cover is placed on the top of the first conversion manhole and the top of the second conversion manhole respectively, a layer of concrete is poured on the top of the first conversion manhole and the top of the second conversion manhole respectively, and the manhole cover is connected to the top of the first conversion manhole and the top of the second conversion manhole respectively by the concrete.

[0022] The beneficial effects of this invention are:

[0023] The pipeline relocation structure provided by this invention allows for the relocation of underground drainage pipelines. By completely removing the old pipes in the first overflow culvert, the first sealing chamber, the second sealing chamber, and the second overflow culvert, water flows into both the first and second overflow culverts. Since the first end of the new pipe connects to the first overflow culvert, and the second end connects to the second overflow culvert, water flowing into the first overflow culvert can simultaneously flow into the second overflow culvert via both the old and new pipes. By sealing the first and second sealing chambers, water flows into the new pipe only through the first overflow culvert. Water from the new pipe then flows into the second overflow culvert before flowing into the downstream pipeline. Therefore, this structure allows for the relocation of underground drainage pipelines without interrupting water supply, preventing large-scale and prolonged water outages and minimizing disruption to production and daily life.

[0024] The pipeline relocation construction method provided by this invention involves constructing a new pipe at the old pipe location, then building a first conversion well and a second conversion well at the first and second ends of the new pipe, respectively. The old pipe within the first and second conversion wells is then removed, and the first and second sealing chambers are sealed with concrete. Finally, well covers are installed on the tops of the first and second conversion wells. This construction method allows for the relocation of old pipes without water outages, preventing large-scale and prolonged water stoppages and minimizing disruption to production and daily life. Furthermore, the pipeline relocation structure constructed using this method exhibits high structural strength, long service life, and high reliability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the pipe relocation structure provided in this embodiment of the invention when the old pipe has not been removed;

[0026] Figure 2 This is a schematic diagram of the pipe relocation structure provided in this embodiment of the invention after the old pipe has been removed;

[0027] Figure 3 This is a schematic diagram of the structure after the pipeline relocation structure provided in this embodiment of the invention has been sealed with the first and second sealing chambers;

[0028] Figure 4 yes Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 5 This is a cross-sectional view of the second conversion well provided in an embodiment of the present invention.

[0030] In the picture:

[0031] 1. First transfer shaft; 11. First sealing chamber; 12. First water passage culvert;

[0032] 2. Second conversion well; 21. Second sealing chamber; 22. Second water passage culvert;

[0033] 3. Old pipes;

[0034] 4. New pipe; 41. Water stop plate; 42. Rib plate;

[0035] 5. Partition wall; 6. Manhole cover. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] like Figures 1 to 5As shown, this embodiment provides a pipeline relocation structure, including a first conversion well 1, a second conversion well 2, an old pipe 3, and a new pipe 4. Both the first conversion well 1 and the second conversion well 2 are equipped with partition walls 5, which divide the first conversion well 1 into a first sealing chamber 11 and a first water passage culvert 12, and divide the second conversion well 2 into a second sealing chamber 21 and a second water passage culvert 22. The first end of the new pipe 4 is connected to the first water passage culvert 12, and the second end of the new pipe 4 is connected to the second water passage culvert 22. The old pipe 3 sequentially passes through the first water passage culvert 12, the first sealing chamber 11, the second sealing chamber 21, and the second water passage culvert 22.

[0041] The pipeline relocation structure provided in this embodiment allows for the complete removal of the old pipe 3 from the first culvert 12, the first sealing chamber 11, the second sealing chamber 21, and the second culvert 22 when underground drainage pipelines need to be relocated. This allows water in the pipeline to flow into the first culvert 12 and the second culvert 22. Since the first end of the new pipe 4 is connected to the first culvert 12 and the second end of the new pipe 4 is connected to the second culvert 22, the water in the pipeline, after flowing into the first culvert 12, can simultaneously flow into the second culvert 22 via the old pipe 3 and the new pipe 4. Furthermore, by sealing the first sealing chamber 11 and the second sealing chamber 21, the water in the pipeline flows only into the new pipe 4 through the first culvert 12, the water in the new pipe 4 flows into the second culvert 22, and the water in the second culvert 22 then flows into the downstream pipeline. Therefore, this structural method allows for the modification of underground drainage pipes without interrupting water supply, avoiding large-scale and prolonged water outages and ensuring no impact on production or daily life.

[0042] Optionally, such as Figure 1 and Figure 4 As shown, both the first and second ends of the new pipe 4 are equipped with water-stop plates 41. These water-stop plates 41 prevent water from overflowing from the first and second water-passing culverts 12 and 22 at their connection points with the new pipe 4, thus achieving a sealing effect. Furthermore, in this embodiment, the water-stop plate 41 is a water-stop steel plate. When water seeps along the connection point between the first water-passing culvert 12 and the first end of the new pipe 4, or along the connection point between the second water-passing culvert 22 and the second end of the new pipe 4, it cannot continue to seep after encountering the water-stop steel plate. Thus, the water-stop steel plate effectively cuts off the water seepage path. Furthermore, in this embodiment, the width of the water-stop steel plate is greater than the diameter of the new pipe 4, thereby extending the water seepage path and also achieving a waterproofing effect.

[0043] Optionally, such as Figure 1 and Figure 4As shown, ribs 42 are provided at the connection points of the first end of the new pipe 4 with the first water culvert 12 and the second end of the new pipe 4 with the second water culvert 22. This strengthens the connection between the new pipe 4 and the first and second water culverts 12 and 22, preventing the new pipe 4 from loosening. In this embodiment, multiple triangular right-angled ribs 42 are spaced apart along the circumference of the first and second ends of the new pipe 4 to further enhance the fixing effect on the new pipe 4. Furthermore, the ribs 42 can also be curved plates with an arc shape. The shape of the ribs 42 is not specifically limited here, as long as it can enhance the fixing effect on the new pipe 4.

[0044] Optionally, waterproof baffles are provided on the inner surfaces of both the first water-passing culvert 12 and the second water-passing culvert 22. Since both the first transfer shaft 1 and the second transfer shaft 2 in this embodiment are cast-in-place concrete structures, the waterproof baffles provided on the inner surfaces of the first water-passing culvert 12 and the second water-passing culvert 22 can prevent water from corroding the reinforced concrete, and can also prevent water in the first water-passing culvert 12 and the second water-passing culvert 22 from seeping out through the capillary channels, micro-cracks (generally invisible to the naked eye) and pores naturally present in the concrete structure.

[0045] Optionally, such as Figure 5 As shown, both the first transfer well 1 and the second transfer well 2 are equipped with manhole covers 6, which are respectively placed on the top of the first transfer well 1 and the second transfer well 2. This transforms the first transfer well 1 and the second transfer well 2 into a closed structure. Furthermore, in this embodiment, the manhole cover 6 is a prefabricated manhole cover, which is connected to the top of the first transfer well 1 and the second transfer well 2 respectively through a composite casting process. This results in a stronger connection between the manhole cover 6 and the first transfer well 1, and between the manhole cover 6 and the second transfer well 2, reducing the occurrence of cracks, completely sealing the first transfer well 1 and the second transfer well 2, and allowing the first water passage culvert 12 and the second water passage culvert 22 to withstand water pressure. Specifically, the composite casting process used in this embodiment is existing technology and will not be described in detail here. Furthermore, in this embodiment, a waterproof baffle is also provided on the inner surface of the manhole cover 6 to prevent water in the first water passage culvert 12 and the second water passage culvert 22 from corroding the manhole cover 6 and to provide waterproofing.

[0046] Furthermore, this embodiment also provides a pipeline relocation construction method for constructing the aforementioned pipeline relocation structure. The method includes the following steps:

[0047] S1: Construct a new pipe 4 along the designed drainage flow path.

[0048] Optionally, such as Figure 1 and Figure 4As shown, in step S1, after the new pipe 4 is constructed, a waterstop plate 41 and a rib plate 42 are prefabricated at both the first and second ends of the new pipe 4 for later use. It can be understood that the new pipe 4 is the route through which water flows in the pipeline after the old pipe 3 is rerouted.

[0049] S2: Construct the first conversion well 1 at the first end of the new pipe 4, and construct the second conversion well 2 at the second end of the new pipe 4.

[0050] The constructed first and second conversion shafts 1 and 2 must meet the following requirements: the new pipe 4 must be connected to both the first and second conversion shafts 1 and 2, and the old pipe 3 must pass through the first and second conversion shafts 1 and 2 in sequence. Optionally, such as... Figure 1 As shown, in step S2, the first conversion well 1 and the second conversion well 2 are constructed using cast-in-place methods. During concrete pouring, the waterstop plate 41 and rib plate 42 at the first end of the new pipe 4 are integrally cast with the well wall of the first conversion well 1, and the waterstop plate 41 and rib plate 42 at the second end of the new pipe 4 are integrally cast with the well wall of the second conversion well 2. This construction method enhances the connection strength between the well wall of the first conversion well 1 and the waterstop plate 41 and rib plate 42 at the first end of the new pipe 4, and between the well wall of the second conversion well 2 and the waterstop plate 41 and rib plate 42 at the second end of the new pipe 4, improving the overall integrity of the first conversion well 1 and the new pipe 4, and preventing water from overflowing from the first and second ends of the new pipe 4. Specifically, in this embodiment, the pouring thickness of the well wall of the first conversion well 1 and the well wall of the second conversion well 2 is 0.4m, and the pouring thickness of the partition wall 5 is 0.3m, thereby ensuring that the first conversion well 1 and the second conversion well 2 have sufficiently high strength. Of course, in other embodiments, the pouring thickness of the well wall of the first conversion well 1 and the well wall of the second conversion well 2, as well as the pouring thickness of the partition wall 5, can be other values. The specific pouring thickness is determined according to the actual situation on site, as long as it can meet the strength requirements, and no specific provisions are made here.

[0051] S3: Cut off the pipe section of old pipe 3 located in the first conversion well 1 and the second conversion well 2, and then use concrete to seal the first sealing chamber 11 and the second sealing chamber 21.

[0052] like Figure 1 As shown, it can be understood that after the old pipe 3 is cut off from the section located in the first conversion well 1 and the second conversion well 2, the water in the pipe flows into the first water passage box 11 and can flow into the second water passage box 21 simultaneously through the old pipe 3 and the new pipe 4.

[0053] Optionally, in step S3, before sealing the first sealing chamber 11 and the second sealing chamber 21 with concrete, the holes formed by the old pipe 3 penetrating the partition wall 5 are sealed with steel plates, and the steel plates are fixed with adjustable top supports. Sealing the holes formed by the old pipe 3 penetrating the partition wall 5 with steel plates can prevent water from flowing into the first sealing chamber 11 and the second sealing chamber 21. In this embodiment, after the water pressure between the first water passage culvert 12 and the first sealing chamber 11 and between the second water passage culvert 22 and the second sealing chamber 21 is balanced or there is no flowing water, underwater C35 concrete is poured into the first sealing chamber 11 and the second sealing chamber 21 to completely seal the first sealing chamber 11 and the second sealing chamber 21.

[0054] like Figure 3 As shown, after the first sealing chamber 11 and the second sealing chamber 21 are completely sealed, the water in the pipeline flows into the new pipe 4 only through the first water-passing culvert 12. The water in the new pipe 4 flows into the second water-passing culvert 22, and the water in the second water-passing culvert 22 then flows into the downstream pipeline. This achieves the relocation of the old pipe 3 without shutting down the water supply.

[0055] Furthermore, by setting an adjustable top support, misalignment of the steel plate can be prevented, thus avoiding affecting the sealing effect. Specifically, in this embodiment, the adjustable top support is a steel pipe with an adjustable length. One end of the steel pipe abuts against the steel plate, and the other end abuts against the inner wall of the first sealing chamber 11 or the second sealing chamber 21 to firmly fix the steel plate.

[0056] S4: Install manhole covers 6 at the top of the first conversion manhole 1 and the second conversion manhole 2.

[0057] Optionally, such as Figure 3 As shown, in step S4, after the old pipe 3 is relocated, the manhole cover 6 can be laid. Before the manhole cover 6 is placed on the top of the first conversion manhole 1 and the top of the second conversion manhole 2, a waterproof baffle is installed on the inside of the manhole cover 6 to prevent water corrosion. In addition, when laying the manhole cover 6, a layer of concrete is poured on the top of the first conversion manhole 1 and the top of the second conversion manhole 2, and the manhole cover 6 is connected to the top of the first conversion manhole 1 and the top of the second conversion manhole 2 by the concrete. This completely seals the first conversion manhole 1 and the second conversion manhole 2, so that the first water passage culvert 12 and the second water passage culvert 22 cannot be connected to the outside, and thus can withstand a certain water pressure.

[0058] The pipeline relocation construction method provided in this embodiment can relocate the old pipe 3 without stopping the water supply, thus avoiding large-scale and long-term water outages and having no impact on production and daily life. In addition, the structure has high strength, long service life, and high reliability.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method of pipeline repositioning construction, characterized by, The application relates to a pipeline rearrangement structure for construction, which comprises a first conversion well (1), a second conversion well (2), an old pipe (3) and a new pipe (4). A partition wall (5) is arranged in the first conversion well (1) and the second conversion well (2), the partition wall (5) divides the first conversion well (1) into a first sealing chamber (11) and a first water passing box culvert (12), and divides the second conversion well (2) into a second sealing chamber (21) and a second water passing box culvert (22); a first end of the new pipe (4) is communicated with the first water passing box culvert (12), a second end of the new pipe (4) is communicated with the second water passing box culvert (22), and the old pipe (3) passes through the first water passing box culvert (12), the first sealing chamber (11), the second sealing chamber (21) and the second water passing box culvert (22) in sequence. The pipeline rearrangement construction method comprises the following steps: S1, constructing the new pipe (4) on a designed water flow rearrangement line; S2, constructing the first conversion well (1) at a first end of the new pipe (4) and constructing the second conversion well (2) at a second end of the new pipe (4); the new pipe (4) is communicated with the first conversion well (1) and the second conversion well (2), and the old pipe (3) passes through the first conversion well (1) and the second conversion well (2) in sequence; S3, cutting off the pipe section of the old pipe (3) in the first conversion well (1) and the second conversion well (2), and then sealing the first sealing chamber (11) and the second sealing chamber (21) by using concrete; S4, arranging a well cover (6) on top ends of the first conversion well (1) and the second conversion well (2).

2. The method of pipeline repositioning construction according to claim 1, wherein, The first end of the new pipe (4) and the second end of the new pipe (4) are both provided with water stop plates (41).

3. The method of pipe repositioning construction according to claim 1, wherein, The connection between the first end of the new pipe (4) and the first water passing box culvert (12) and the connection between the second end of the new pipe (4) and the second water passing box culvert (22) are both provided with rib plates (42).

4. The method of pipeline repositioning construction of claim 1, wherein, Inner surfaces of the first water passing box culvert (12) and the second water passing box culvert (22) are both provided with waterproof partition plates.

5. The method of pipe repositioning according to any one of claims 1-4, wherein, The first conversion well (1) and the second conversion well (2) are both provided with well covers (6), which are respectively arranged on top ends of the first conversion well (1) and the second conversion well (2).

6. The method of pipeline repositioning construction of claim 1, wherein, In step S1, after the new pipe (4) is constructed, water stop plates (41) and rib plates (42) are prefabricated on the first end of the new pipe (4) and the second end of the new pipe (4).

7. The method of pipe repositioning construction according to claim 6, wherein In step S2, the first conversion well (1) and the second conversion well (2) are cast in situ; when casting, the water stop plates (41) and the rib plates (42) at the first end of the new pipe (4) are integrally cast with the well wall of the first conversion well (1), and the water stop plates (41) and the rib plates (42) at the second end of the new pipe (4) are integrally cast with the well wall of the second conversion well (2).

8. The method of pipeline repositioning construction of claim 1, wherein, In step S3, before the first filling bin (11) and the second filling bin (21) are filled with concrete, the hole formed by the old pipe (3) in the partition wall (5) is blocked by a steel plate, and the steel plate is fixed by an adjustable support.

9. The pipe repositioning method according to claim 1, wherein In step S4, after the well lid (6) is respectively covered on the top end of the first conversion well (1) and the top end of the second conversion well (2), a layer of concrete is poured on the top end of the first conversion well (1) and the top end of the second conversion well (2), and the well lid (6) is connected with the top end of the first conversion well (1) and the top end of the second conversion well (2) by the concrete.

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