Anti-settlement structure of buried pipeline

Abstract

The utility model discloses an anti-settling structure for a buried pipeline, which relates to the technical field of engineering design and construction and comprises an inspection well, a pipeline body, a concrete cushion layer, a nodular cast iron cover plate, a metal hose, a fixed flange, a rigid waterproof sleeve and flexible filler. According to the structure, stress caused by geological sedimentation is counteracted through elastic deformation of the metal hose, and the pipeline body is protected against damage. And meanwhile, the combination of the rigid waterproof sleeve and the flexible filler can ensure that when the inspection well and the pipeline body generate asynchronous settlement, the pipeline body is not damaged due to extrusion on the pipeline body. The inspection well is of a brick structure or a reinforced concrete structure, has high strength and stability and can adapt to different geological conditions. The device is simple in construction, low in cost, easy to popularize and apply, and capable of effectively preventing the buried pipeline from being damaged due to geological sedimentation and ensuring safe and stable operation of the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of engineering design and construction technology, specifically a buried pipeline anti-settlement structure. Background Technology

[0002] In municipal and building engineering projects, the laying of buried pipelines is a crucial component of infrastructure construction. However, due to the complexity of geological conditions, such as uneven soil settlement and changes in groundwater levels, buried pipelines are often subject to varying degrees of damage. This damage can lead not only to pipeline leaks and blockages but also potentially to more serious safety incidents, such as ground subsidence and environmental pollution. Therefore, implementing effective anti-settlement measures to ensure the safe and stable operation of buried pipelines is of significant practical importance.

[0003] While existing anti-settlement measures can mitigate pipeline damage caused by geological settlement to some extent, they still have some shortcomings. For example, some measures are complex to implement and costly; damage to buried pipelines and its specific location are often not immediately apparent, resulting in significant excavation and repair work and substantial losses. Therefore, there is an urgent need for an anti-settlement structure for buried pipelines to address these issues. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a buried pipeline anti-settlement structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A buried pipeline anti-settlement structure includes: a manhole and a pipeline body. The manhole is located underground, with a concrete pad at the bottom and a ductile iron cover plate at the top. A horizontal mounting hole is provided on the manhole. The pipeline body passes through one side of the manhole via the mounting hole. Two sets of pipeline bodies are connected at one end inside the manhole to both ends of a flexible metal hose, and the two sets of pipeline bodies communicate with the interior of the flexible metal hose. A ring-shaped rigid waterproof sleeve is provided inside the mounting hole. The outer wall of the rigid waterproof sleeve is connected to the manhole. Flexible filler is used to fill the space between the rigid waterproof sleeve and the pipeline body.

[0007] As a further embodiment of this utility model: the two sets of pipe bodies are respectively connected to the two ends of the metal hose through fixed flanges at one end inside the inspection well.

[0008] As a further embodiment of this utility model: the inspection well can be constructed of brick masonry, and the inspection well of the brick masonry structure is constructed of sintered solid bricks with a strength of MU10 or higher and cement mortar of M10 grade.

[0009] As a further embodiment of this utility model: the inspection well can be made of reinforced concrete, and the reinforced concrete inspection well is made of light-duty concrete of grade C25 or higher and HPB235 steel bars.

[0010] As a further aspect of this utility model, the anti-permeability grade of the inspection well is greater than or equal to P6.

[0011] As a further embodiment of this utility model: when there is no groundwater, the bottom of the concrete cushion layer is made of compacted plain soil with a compaction coefficient of 0.95; when there is groundwater, the bottom of the concrete cushion layer is covered with a layer of crushed stone or pebbles with a thickness of 100mm or more.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By installing flexible metal hoses, the stress caused by geological subsidence can be effectively offset, protecting the pipeline body from damage;

[0014] 2. The combination of rigid waterproof sleeve and flexible filler can ensure that when the inspection well and the pipeline body settle asynchronously, the squeezing of the pipeline body will not cause damage to the pipeline body.

[0015] 3. The inspection well is constructed of brick or reinforced concrete, which has high strength and stability and can adapt to different geological conditions;

[0016] 4. The construction is simple, the cost is low, and it is easy to promote and apply. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a buried pipeline anti-settlement structure according to an embodiment of the present utility model.

[0018] Figure 2 This is a top view of a buried pipeline anti-settlement structure according to an embodiment of this utility model.

[0019] In the diagram: 1. Inspection well; 2. Concrete foundation; 3. Ductile iron cover plate; 4. Pipe body; 5. Metal flexible hose; 6. Fixed flange; 7. Rigid waterproof sleeve; 8. Flexible filler. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In this embodiment of the utility model, please refer to Figure 1 and Figure 2 An anti-settlement structure for buried pipelines includes: a manhole 1 and a pipeline body 4. The manhole 1 is located underground, with a concrete pad 2 at the bottom and a ductile iron cover plate 3 installed on the top. A horizontal mounting hole is provided on the manhole 1. The pipeline body 4 passes through one side of the manhole 1 through the mounting hole. One end of two sets of pipeline bodies 4 located inside the manhole 1 is connected to both ends of a metal flexible hose 5, and the two sets of pipeline bodies 4 are internally connected to the metal flexible hose 5. An annular rigid waterproof sleeve 7 is provided in the mounting hole. The outer wall of the rigid waterproof sleeve 7 is connected to the manhole 1. A flexible filler 8 is filled between the rigid waterproof sleeve 7 and the pipeline body 4.

[0022] The two sets of pipe bodies 4 are located inside the inspection well 1, with one end connected to both ends of the metal hose 5 via fixed flanges 6.

[0023] Before construction, the designer first determines the specific location of the buried pipeline to prevent settlement, and decides on the height of the inspection well 1 according to actual needs; then, the diameter, material and elevation of the pipeline body 4 are specified, and the size of the metal hose 5 and the specifications and model of the fixing flange 6 are selected according to the diameter of the pipeline 4.

[0024] Excavation of the foundation pit is carried out at the determined location. A concrete cushion layer 2 is laid at the bottom of the foundation pit, and then inspection well 1 is constructed. Installation holes are opened horizontally on the side wall of inspection well 1, and the pipeline body 4 is inserted through the installation holes to pass through one side of inspection well 1. A rigid waterproof sleeve 7 is installed at the connection between the pipeline body 4 and the inspection well 1, and flexible filler 8 is filled between the rigid waterproof sleeve 7 and the pipeline body 4. This ensures that when the inspection well 1 and the pipeline body 4 settle asynchronously, the compression of the pipeline body 4 will not cause damage to the pipeline body 4. Then, the pipeline body 4 and the metal flexible hose 5 are connected by a fixed flange 6 to ensure the sealing and stability of the connection. Finally, a ductile iron cover plate 3 is installed on the top of the inspection well 1 to complete the construction of the entire buried pipeline anti-settlement structure. The inspection well 1 facilitates the inspection and maintenance of the metal flexible hose 5. The installation of the metal flexible hose 5 in the buried pipeline at the location of large settlement can offset the impact of settlement deformation of the pipeline body 4.

[0025] After acceptance, backfill soil around manhole 1, backfilling symmetrically and evenly, compacting in layers, with a compaction coefficient of not less than 0.95.

[0026] In this embodiment, the foundation pit is excavated according to the principles of "symmetrical balance, layered and segmented, time-limited excavation, and time-limited support". After the foundation pit is excavated, the pit is inspected according to the relevant specifications. Only after it passes the inspection can the next step be carried out.

[0027] As one embodiment of this utility model, the inspection well 1 can be a brick masonry structure, wherein the brick masonry inspection well 1 is constructed by sintering solid bricks with a strength of MU10 or higher and cement mortar of M10 grade.

[0028] In this embodiment, the cement mortar used must be full, the surface of the inspection well 1 must be flat, and the brick joints must be uniform.

[0029] As one embodiment of this utility model, the inspection well 1 can be made of reinforced concrete, and the reinforced concrete inspection well 1 is made of light-duty concrete of grade C25 or higher and HPB235 steel bars.

[0030] In this embodiment, the inspection well 1 must have a flat and smooth surface without honeycomb pitting, and the manufacturing size error should be ±5mm.

[0031] As one embodiment of this utility model, the anti-permeability grade of the inspection well 1 is greater than or equal to P6.

[0032] As one embodiment of this utility model, when there is no groundwater, the bottom of the concrete cushion layer 2 is made of compacted plain soil with a compaction coefficient of 0.95; when there is groundwater, the bottom of the concrete cushion layer 2 is laid with a layer of crushed stone or pebbles with a thickness of 100mm or more.

[0033] The working principle of this utility model is as follows: First, the designer determines the specific location of the buried pipeline to prevent settlement and decides the height of the inspection well 1 according to actual needs; second, the diameter, material and elevation of the pipeline body 4 are specified, and the size of the metal hose 5 and the specifications and model of the fixing flange 6 are selected according to the diameter of the pipeline 4.

[0034] Excavate the foundation pit at the determined location, and lay a concrete cushion layer 2 at the bottom of the foundation pit. If there is no groundwater, use plain soil to compact it with a compaction coefficient of 0.95; if there is groundwater, lay a layer of crushed stone or pebbles with a thickness of ≥100mm.

[0035] Next, depending on the structural form of manhole 1, it is constructed using either brick masonry or reinforced concrete: the brick masonry manhole 1 is constructed using sintered solid bricks with a strength grade greater than or equal to MU10 and M10 grade cement mortar; the reinforced concrete manhole 1 is constructed using concrete with a strength grade greater than or equal to C25 and HPB235 grade steel bars; the impermeability grade of manhole 1 is greater than or equal to P6.

[0036] A horizontal installation hole is made on the side wall of the inspection well 1, and the pipe body 4 is passed through the installation hole to one side of the inspection well 1; a rigid waterproof sleeve 7 is installed at the connection between the pipe body 4 and the inspection well 1, and a flexible filler 8 is filled between the rigid waterproof sleeve 7 and the pipe body 4; then, the pipe body 4 and the metal flexible hose 5 are connected by a fixed flange 6 to ensure the sealing and stability of the connection; finally, a ductile iron cover plate 3 is installed on the top of the inspection well 1 to complete the construction of the entire buried pipeline anti-settlement structure.

[0037] After acceptance, backfill soil around manhole 1, backfilling symmetrically and evenly, compacting in layers, with a compaction coefficient of not less than 0.95.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A buried pipeline anti-settlement structure, characterized in that, include: The inspection well and the pipeline body are located underground. The bottom of the inspection well is provided with a concrete pad, and the top of the inspection well is equipped with a ductile iron cover plate. The inspection well has horizontally opened installation holes. The pipeline body passes through one side of the inspection well through the installation holes. One end of the two sets of pipeline bodies located inside the inspection well is connected to both ends of a metal flexible hose, and the two sets of pipeline bodies are in communication with the inside of the metal flexible hose. An annular rigid waterproof sleeve is provided in the installation hole. The outer wall of the rigid waterproof sleeve is connected to the inspection well. Flexible filler is filled between the rigid waterproof sleeve and the pipeline body.

2. The buried pipeline anti-settlement structure according to claim 1, characterized in that, The two sets of pipe bodies are located at one end inside the inspection well and are respectively connected to both ends of the metal hose via fixed flanges.

3. The buried pipeline anti-settlement structure according to claim 1, characterized in that, The inspection well can be constructed using a brick masonry structure, which is made of sintered solid bricks with a strength greater than or equal to MU10 and cement mortar of M10 grade.

4. The buried pipeline anti-settlement structure according to claim 1, characterized in that, The inspection well may be constructed of reinforced concrete, and the reinforced concrete inspection well is made of light-duty concrete of grade C25 or higher and HPB235 grade steel bars.

5. The buried pipeline anti-settlement structure according to claim 1, characterized in that, The inspection well has a permeability resistance grade greater than or equal to P6.

6. The buried pipeline anti-settlement structure according to claim 1, characterized in that, When there is no groundwater, the bottom of the concrete cushion layer is made of compacted plain soil with a compaction coefficient of 0.95; when there is groundwater, the bottom of the concrete cushion layer is laid with a layer of crushed stone or pebbles with a thickness of ≥100mm.

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