Prefabricated assembly type inspection well shaft
Through the modular design and multi-spec splicing of prefabricated inspection well bore, the problems of insufficient bearing capacity and unstable construction quality are solved, and efficient and environmentally friendly inspection well construction is achieved, which is suitable for modern engineering needs.
Patent Information
- Application Number
- CN202420851784.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing inspection wellbore has insufficient bearing capacity, unstable construction quality, which is difficult to meet the needs of modern engineering construction, and the cast-in-place process of reinforced concrete is inefficient and has a great environmental impact.
The prefabricated assembled inspection wellbore is used to splice the axial direction through the modular wellbore members, equipped with top members and lifting gaskets, achieving rapid assembly, high-strength connection and good sealing performance. It uses various heights and radial specifications to flexibly splice the components. Combined with the conversion cover plate and suspension ring design, ensure construction efficiency and quality.
It significantly improves the load-bearing capacity and construction efficiency of inspection wells, ensures the uniformity and standardization of quality, reduces construction difficulty and environmental impact, and is suitable for all types of inspection well projects.
Smart Images
Figure CN222349761U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground infrastructure, in particular to a prefabricated and assembled inspection well shaft. Background Art
[0002] At present, traditional inspection shafts are mostly built with red bricks. Their bearing capacity is limited by the strength of the brick wall, which makes it difficult to meet high-bearing requirements and easily causes sinking around the shaft, affecting driving safety and comfort. The construction quality of brick-built shafts is affected by complex site conditions and different skills of construction workers, and lacks stability and standardization.
[0003] In December 2021, the Ministry of Housing and Urban-Rural Development issued the "Catalogue of Construction Techniques, Equipment and Materials Endangering Production Safety in Housing Construction and Municipal Infrastructure Projects (First Batch)", which clearly eliminated the brickwork of sewage inspection wells and recommended the use of reinforced concrete cast-in-place technology or integrated finished inspection wells, etc. This shows that brickwork wells can no longer be used in engineering projects and alternative products are urgently needed.
[0004] Although the strength of cast-in-place reinforced concrete is better than brickwork, the construction process is large in workload, long in construction period, and requires a curing period, which seriously affects the progress of the project and puts great pressure on the urban environment and traffic, especially in densely populated and busy traffic areas.
[0005] In summary, the existing brick-built shafts cannot meet the needs of modern engineering construction due to their weak bearing capacity and uncontrollable construction quality. Although the reinforced concrete cast-in-place process has improved in strength, its low efficiency and high environmental disturbance problems still need to be solved. It is urgent to develop a new inspection shaft solution that is efficient, environmentally friendly and in line with industry trends. Utility Model Content
[0006] The utility model provides a prefabricated assembled inspection well shaft, which is used to solve the defects of the inspection well shaft in the prior art, such as limited bearing capacity and unstable construction quality, and realizes efficient, environmentally friendly and standardized inspection well construction and installation.
[0007] The utility model provides a prefabricated and assembled inspection well shaft, comprising: a shaft component, the shaft component comprising a shaft body, a first socket portion arranged at the top of the shaft body, and a second socket portion arranged at the bottom of the shaft body and adapted to the first socket portion, a plurality of the shaft components are axially spliced to form a shaft body; a top component, which is arranged above the shaft body and has a cylindrical structure adapted to the shaft body, and the bottom of the top component is provided with the second socket portion; a well lifting gasket, which is arranged between the top component and the shaft frame cover of the inspection well.
[0008] According to a prefabricated and assembled inspection well shaft provided by the utility model, a plurality of shaft components have various height specifications, and the shaft body is spliced by the shaft components of one or more height specifications.
[0009] According to a prefabricated inspection well shaft provided by the utility model, when the shaft body is formed by splicing shaft components of various height specifications, the height of the shaft component located at the bottom is greater than or equal to the height of the shaft component located at the top.
[0010] According to a prefabricated and assembled inspection well shaft provided by the utility model, a plurality of shaft components have a variety of radial dimensions; a conversion cover plate is arranged between the shaft components with different radial dimensions; the upper and lower sections of the conversion cover plate are respectively provided with the first socket portion and the second socket portion adapted to the corresponding shaft components.
[0011] According to a prefabricated inspection well shaft provided by the utility model, when the shaft body is spliced by shaft components of various radial size specifications, the radial size of the shaft component located at the bottom is greater than or equal to the radial size of the shaft component located at the top.
[0012] According to a prefabricated and assembled inspection shaft provided by the utility model, the central axes of the first socket part and the second socket part on the conversion cover plate deviate from each other, so that the conversion cover plate and the shaft components connected with the upper and lower sides thereof form a single-sided continuous shaft wall structure.
[0013] According to a prefabricated and assembled inspection shaft provided by the utility model, lifting rings or lifting holes are symmetrically arranged on the outer side surfaces of the shaft component, the top component and the conversion cover plate.
[0014] According to a prefabricated and assembled inspection shaft provided by the utility model, one of the first socket part and the second socket part is an inner ring step structure, and the other is an outer ring step structure matched with the inner ring step structure.
[0015] According to a prefabricated and assembled inspection shaft provided by the utility model, a plurality of tread members are arranged on the inner side wall of the shaft component; and the plurality of tread members are evenly distributed in the height direction of the shaft component.
[0016] According to a prefabricated inspection shaft provided by the utility model, in the height direction, the vertical spacing between any adjacent tread members is the same; the height of the shaft component is an integer multiple of the vertical spacing between the tread members.
[0017] The prefabricated and assembled inspection well shaft provided by the utility model adopts a modular shaft shaft component design, forms a shaft body through axial splicing, and is equipped with a top component and a lifting gasket, thereby realizing rapid assembly of the shaft structure, high-strength connection and good sealing performance, conforming to the requirements of modern prefabricated and assembled buildings for efficiency, standardization and environmental protection, and being suitable for the construction and renovation of various inspection well projects. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 This is one of the schematic cross-sectional views of the prefabricated inspection shaft provided by the utility model;
[0020] Figure 2 This is the second schematic diagram of the cross-sectional structure of the prefabricated and assembled inspection well shaft provided by the utility model;
[0021] Figure 3 It is a structural schematic diagram of a shaft component of a prefabricated assembled inspection shaft provided by the utility model;
[0022] Figure 4 It is a structural schematic diagram of the top component of the prefabricated and assembled inspection well shaft provided by the utility model;
[0023] Figure 5 It is a side view structural schematic diagram of the conversion cover plate of the prefabricated assembled inspection well shaft provided by the utility model;
[0024] Figure 6 It is a schematic diagram of the top view of the conversion cover plate of the prefabricated assembled inspection shaft provided by the utility model;
[0025] Reference numerals:
[0026] 10. Shaft component; 11. Shaft body; 12. First socket; 13. Second socket; 14. Lifting ring or lifting hole; 15. Step; 20. Top component; 21. Lifting gasket; 22. Shaft frame cover; 30. Conversion cover. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0029] Combine the following Figure 1-Figure 6 The specific implementation mode of the prefabricated and assembled inspection shaft of the utility model is described.
[0030] The utility model provides a prefabricated inspection well shaft, comprising: a shaft component 10, the shaft component 10 comprises a shaft body 11, a first socket 12 arranged at the top of the shaft body 11, and a second socket 13 arranged at the bottom of the shaft body 11 and adapted to the first socket 12, a plurality of shaft components 10 are axially spliced to form a barrel; a top component 20, which is arranged above the barrel and has a cylindrical structure adapted to the shaft body 11, and the bottom of the top component 20 is provided with the second socket 13; a well raising gasket 21, which is arranged between the top component 20 and the well frame cover 22 of the inspection well. The prefabricated inspection well shaft adopts a modular shaft component 10 design, forms a barrel through axial splicing, and is equipped with a top component 20 and a well raising gasket 21, so as to realize the rapid assembly, high-strength connection and good sealing performance of the shaft structure, meet the requirements of modern prefabricated and assembled buildings for high efficiency, standardization and environmental protection, and is suitable for the construction and renovation of various inspection well projects.
[0031] Specifically, the wellbore component 10 serves as the basic unit of the entire wellbore, and specifically includes a wellbore body 11, a first socket part 12 and a second socket part 13. The wellbore body 11 is the main structure of the wellbore. The first socket part 12 is arranged at the top of the wellbore body 11, providing a stable interface for the longitudinal connection between the wellbore components 10, ensuring that the wellbore after splicing has good integrity and sealing. The second socket part 13 is located at the bottom of the wellbore body 11, and is adapted to the shape and size of the first socket part 12 at the top to form a docking relationship.
[0032] By connecting a plurality of shaft components 10 having the above structure in sequence along the axial direction (i.e., the vertical direction of the shaft) according to the design requirements, and using the cooperation of the respective first socket parts 12 and the second socket parts 13, these components are firmly and tightly connected together, thereby constructing the shaft part of the entire shaft. Preferably, the splicing method allows the shaft components 10 of different numbers and specifications to be flexibly combined according to actual needs, so as to adapt to inspection wells of different depths, diameters and special structural requirements.
[0033] The top member 20 is placed on the barrel as a transition structure at the top of the shaft. It has a cylindrical structure adapted to the shaft main body 11, ensuring a smooth transition and seamless connection with the shaft. The bottom of the top member 20 is also provided with a second socket 13 adapted to the first socket 12 of the shaft member 10, so that the top member 20 can be perfectly docked with the last shaft member 10 (the highest shaft member 10) on the barrel to complete the shaft as a whole. The lifting gasket 21 is installed between the top member 20 and the shaft frame cover 22 of the inspection shaft as a buffer and sealing element for the contact surface between the two. The lifting gasket 21 is mainly used to solve the problem of lifting the inspection shaft when the road is partially renovated or the overall road surface is added.
[0034] The prefabricated and assembled inspection shaft system of the utility model solves the problem of well-surrounding subsidence caused by insufficient strength of existing red brick masonry shafts, and significantly improves the comfort and safety of driving. Among them, the prefabricated components adopt the industrialized workshop batch prefabrication mode, abandoning the tediousness and uncertainty of on-site masonry, ensuring the uniform quality and construction accuracy of the products, greatly improving the construction efficiency, shortening the on-site construction period, and reducing the construction difficulty. Moreover, the prefabrication and assembly method effectively avoids the quality fluctuations caused by differences in manual operation, and realizes the efficiency, standardization and specialization of the inspection shaft construction.
[0035] For each component of the prefabricated inspection shaft, including the shaft component 10, the top component 20 and other supporting components, it is preferred to use reinforced concrete materials to ensure the durability and durability of the structure. Preferably, the concrete strength grade is not less than C30 to ensure that the shaft has sufficient bearing capacity and compressive resistance; the impermeability grade reaches ≥P8 standard to effectively prevent groundwater infiltration and ensure the long-term stable operation of the facilities inside the shaft; in terms of steel bars, the HPB300 model is selected for diameters ≤10mm, which can adapt to the refined construction of the shaft structure with its excellent plasticity and welding performance; the HRB400 model is selected for diameters >10mm to provide stronger yield strength and tensile strength to ensure the structural stability of the shaft under complex loads. In addition, the thickness of the concrete protective layer is uniformly set to 35mm, which can effectively protect the steel bars from corrosion while taking into account the optimization of the overall structure.
[0036] In view of the diverse demands of existing inspection well shafts in terms of internal structural dimensions, burial depth, spacing between steps for personnel going down the shaft, and installation of front-end sensing equipment to adapt to information construction, the utility model preferably pre-designs and manufactures prefabricated reinforced concrete components with a variety of inner diameters and height specifications so that they can be flexibly combined and assembled at the construction site, accurately meeting the specific requirements of various drawing designs for inspection well shafts.
[0037] According to a prefabricated and assembled inspection well shaft provided by the utility model, a plurality of shaft components 10 have a variety of height specifications, and the shaft body is spliced by shaft components 10 of one or more height specifications. By configuring shaft components 10 of a variety of height specifications and allowing them to be freely spliced to construct the shaft body, a highly customized and fast construction of the inspection well structure is achieved. Since the shaft components 10 have a variety of height specifications, the construction site can directly select prefabricated components of appropriate height for splicing according to the predetermined total depth of the shaft, without the need for complex cutting, adjustment and other operations on site, which greatly shortens the construction period and improves work efficiency.
[0038] Further, according to a prefabricated inspection well shaft provided by the utility model, when the shaft body is composed of shaft components 10 of various height specifications, the height of the shaft component 10 located at the bottom is greater than or equal to the height of the shaft component 10 located at the top. When the shaft body is composed of shaft components 10 of various height specifications, it is stipulated that the height of the shaft component 10 located at the bottom is greater than or equal to the height of the shaft component 10 located at the top, so as to enhance the stability of the shaft structure.
[0039] Specifically, since the inspection well is mainly subjected to top-down loads (such as soil pressure, groundwater pressure, traffic load, etc.) during use, placing higher or heavier components at the bottom of the wellbore can form a stable foundation, effectively disperse and transfer loads, and reduce the risk of structural damage caused by local stress concentration. From a construction perspective, the lower bottom components are heavier, so they are first firmly positioned, and then the lighter upper components are stacked layer by layer, which conforms to the construction logic of placing heavy objects first and adding light objects later, reducing the risk of high-altitude operations and improving construction efficiency.
[0040] According to a prefabricated inspection shaft provided by the utility model, multiple shaft components 10 have multiple radial dimensions; a conversion cover plate 30 is arranged between shaft components 10 with different radial dimensions; the upper and lower sections of the conversion cover plate 30 are respectively provided with a first socket 12 and a second socket 13 adapted to the corresponding shaft components 10. Through the multiple radial dimensions of the shaft components 10, and the design of the conversion cover plate 30 to achieve the splicing transition of shaft components 10 with different diameters, the adaptability of the shaft structure, the convenience of construction and the convenience of later maintenance are significantly improved.
[0041] Specifically, the plurality of shaft components 10 have a variety of radial dimensions, so that shaft components 10 of different diameters can be selected according to actual engineering requirements to adapt to the internal facility layout of different space requirements, as well as the wellhead sizes of different geographical environments and planning requirements. A conversion cover plate 30 is arranged between shaft components 10 of different radial dimensions, and the upper and lower sections of the conversion cover plate 30 are respectively provided with a first socket 12 and a second socket 13 adapted to the corresponding shaft components 10, so that shaft components 10 of different diameters can be seamlessly connected through the conversion cover plate 30, thereby maintaining the integrity and sealing of the shaft structure.
[0042] When designing a prefabricated inspection well shaft, it is necessary to fully consider the standard size of the well frame cover 22, the requirements of the drainage network information construction, and the space requirements for the staff to go down the well. According to the preferred embodiment of the present application, the inner diameter of the well shaft can be set to Three specifications. Among them, and The size matches the size of the commonly used manhole cover 22 to ensure a close fit between the manhole cover and the shaft; The size is set to meet the needs of the increasingly popular installation of sensing equipment in inspection wells and the activity space for staff, ensuring that the facilities in the well are reasonably laid out and easy to operate.
[0043] In conjunction with this, the top member 20 is preferably designed as and The upper surfaces of the two forms are kept flat to facilitate the stable placement of the well raising gasket 21 and the smooth installation of the well frame cover 22, so as to ensure a smooth transition between the wellhead and the road surface, which helps to improve the overall aesthetics of the wellhead and driving safety.
[0044] For well lifting operations, it is preferred to use The concrete adjustment washers (lift washers 21) are set in three specifications: 50mm, 100mm, and 150mm in thickness. These washers can be flexibly selected according to actual needs to accurately adjust the height difference between the inspection well and the road surface, ensuring that the road surface is restored to a flat surface, while meeting the sealing requirements of the well shaft and the surrounding environment.
[0045] In order to further solve the problem of upper and lower connection between wellbores with different inner diameters, the preferred form of the conversion cover plate 30 in the utility model includes change Conversion cover 30 and change The thickness of the conversion cover plate 30 can be set to about 200 mm. The conversion cover plate 30 can realize a smooth transition between wellbores with different inner diameters, ensure the integrity and sealing of the wellbore structure, simplify the construction process, and improve the engineering adaptability and construction efficiency.
[0046] In the design of the prefabricated and assembled inspection well shaft, the utility model takes into account the multiple requirements of well cover matching, information equipment installation, staff operating space, road height adjustment, and connectivity of well shafts with different inner diameters, and by providing a variety of inner diameter sizes, top components 20, lifting washers 21 and conversion covers 30, a complete and flexible well shaft system solution is constructed, which greatly improves the standardization, adaptability and construction convenience of the inspection well project.
[0047] According to a prefabricated and assembled inspection well shaft provided by the utility model, when the shaft body is composed of shaft components 10 of various radial size specifications, the radial size of the shaft component 10 located at the bottom is greater than or equal to the radial size of the shaft component 10 located at the top. Placing the shaft component 10 with a larger radial size at the bottom of the shaft helps to build a more stable foundation structure. Since the shaft mainly bears top-down loads (such as soil pressure, groundwater pressure, traffic load, etc.), the shaft component 10 with a large radial size at the bottom can provide a larger cross-sectional area and a higher bearing capacity, effectively disperse and transfer loads, reduce local stress concentration, and thus improve the overall compression, shear and bending resistance of the shaft.
[0048] When the shaft components 10 with different radial dimensions are connected, the spacing between their side walls on the horizontal projection plane may be too large, which makes it difficult to set a continuous climbing structure between the upper and lower shafts. According to a prefabricated and assembled inspection shaft provided by the utility model, the central axes of the first socket 12 and the second socket 13 on the conversion cover plate 30 deviate from each other, so that the conversion cover plate 30 and the shaft components 10 connected to the upper and lower sides thereof form a single-sided continuous shaft wall structure. By making the side walls of the shaft components 10 on the upper and lower sides of the conversion cover plate 30 close to or tangent to each other on the horizontal projection, the interruption or discontinuity of the climbing path caused by the change in radial dimensions is effectively reduced. Through the design of the deviation of the central axis, at least one side of the inspection shaft can construct a single-sided continuous shaft wall structure, which is conducive to the construction of a smoother climbing structure system. Whether it is a ladder, a pedal or other types of climbing facilities, they can be arranged continuously along the continuous shaft wall structure, and are not affected by the change in the radial dimensions of the shaft component 10, so that the staff can maintain a stable climbing rhythm and comfort during the process of going up and down the shaft, which significantly improves the safety and efficiency of the operation.
[0049] According to the prefabricated and assembled inspection shaft provided by the utility model, lifting rings or lifting holes 14 are symmetrically arranged on the outer side of the shaft component 10, the top component 20 and the conversion cover plate 30. The symmetrically arranged lifting rings or lifting holes 14 provide standardized lifting points for the shaft component 10, the top component 20 and the conversion cover plate 30, so that these prefabricated components can be conveniently and quickly operated by mechanical equipment such as cranes and hoists during production, transportation, storage and lifting, movement and positioning at the construction site.
[0050] Preferably, in the prefabricated and assembled inspection shaft provided by the utility model, the design of the lifting facilities for components of different heights is different. Among them, for components with a height of less than 1 meter, it is preferred to set lifting rings symmetrically on the side walls. The material of the lifting rings can be selected from Q235B grade plain round steel bars. The exposed length of the plain round steel bars can be set to about 70mm, ensuring sufficient welding space and room for lifting operations. The lifting rings are preferably welded directly to the steel skeleton inside the component to ensure a firm connection between the lifting rings and the component body. For components with a height greater than 1 meter, lifting holes are preferably symmetrically set on the side walls. The depth of the lifting holes can be set to about 60mm, and the inner diameter is It is sufficient to accommodate Q235B grade steel pipes as lifting connectors. It is understandable that if the position of the lifting hole conflicts with the steel bar, fine-tuning is allowed to ensure that the setting of the lifting hole meets the lifting requirements without affecting the structural performance of the component. The utility model optimizes the lifting ring and the lifting hole as lifting facilities for components of different heights, and fully considers the safety, convenience and impact on the structural integrity of the component during the lifting operation.
[0051] According to a prefabricated inspection shaft provided by the utility model, one of the first socket part 12 and the second socket part 13 is an inner ring step structure, and the other is an outer ring step structure that matches the inner ring step structure. It can be understood that the inner ring step structure of the utility model refers to the step structure located on the inner ring side in the docking state; the outer ring step structure is the step structure located on the outer ring side in the docking state. By adopting a socket design that combines the inner ring step structure with the outer ring step structure, precise docking between shaft components 10, effective load transfer, simplified construction process, and good adaptability and expansibility are achieved, providing strong technical support for the efficient, stable and convenient construction of prefabricated inspection shafts.
[0052] Preferably, the inner ring step structure is provided with an outer cone surface, and the outer ring step structure is provided with an inner cone surface. The cooperation between the inner cone surface and the outer cone surface forms a self-guided docking mechanism. When the outer ring step structure of the upper wellbore component 10 is docked with the inner ring step structure of the lower wellbore component 10, the components can be automatically guided to perform fine adjustments through the interaction of the inclined surfaces between the cone surfaces to achieve precise centering. Due to the automatic correction effect between the cone surfaces, construction personnel do not need to spend a lot of time on fine alignment and adjustment. They only need to roughly align the direction of the interface to successfully complete the docking with the help of the guidance of the cone surface. The close fit between the inner cone surface and the outer cone surface not only improves the mechanical bite force of the docking part, but also forms a continuous, gap-free contact surface, which is beneficial to improving the sealing performance of the splicing part.
[0053] Furthermore, according to a prefabricated inspection well shaft provided by the utility model, an expansion rubber water stop strip is provided between the mutually spliced first socket part 12 and the second socket part 13; and / or, a waterproof cement mortar is used to fill the gap between the mutually spliced first socket part 12 and the second socket part 13. Among them, the expansion rubber water stop strip is a rubber product with good elasticity and expansion performance. After the splicing is completed, it can fill the gap between the socket parts tightly through its own expansion deformation to form an effective waterproof barrier. As a supplement or alternative measure to the expansion rubber water stop strip, waterproof cement mortar can also be used to fill the gap between the mutually spliced first socket part 12 and the second socket part 13. The utility model constructs a multi-level and all-round waterproof system by providing an expansion rubber water stop strip between the mutually spliced first socket part 12 and the second socket part 13, or using waterproof cement mortar to fill the gap, or using a combination of the two, which effectively prevents the penetration of moisture, gas or other media, and ensures the long-term waterproof performance and structural stability of the prefabricated inspection well shaft.
[0054] According to a prefabricated and assembled inspection shaft provided by the utility model, a plurality of stepping members 15 are arranged on the inner side wall of the shaft component 10; the plurality of stepping members 15 are evenly distributed in the height direction of the shaft component 10. By arranging a plurality of evenly distributed stepping members 15 on the inner side wall of the shaft component 10, safe and convenient working conditions are provided for the workers inside the inspection shaft. Especially when working in a deep well, the continuous distribution of the stepping members 15 allows the workers to go up and down the shaft safely and labor-savingly, avoiding the safety hazards such as slipping and falling caused by directly climbing the smooth inner wall.
[0055] Among them, the stepping distance of the stepping piece 15 is preferably about 360mm, which can ensure that the operator maintains a natural and comfortable gait when climbing the shaft. Considering the habit of stepping with left and right feet, the stepping piece 15 is preferably arranged alternately on the left and right. That is, one stepping piece 15 is relatively set on the left side, and the next stepping piece 15 is relatively set on the right side, and they are arranged alternately. This layout ensures that the left and right feet of the operator can alternately and evenly distribute power during the climbing process, thereby improving the climbing efficiency. In order to ensure that the foot steps comfortably and stably on the stepping piece 15, the horizontal distance between the center lines of the left and right feet is preferably set to about 300mm. It is understandable that the stepping piece 15 should be avoided from being installed at the joints of prefabricated components and prefabricated components. In addition to the shaft component 10, the inner side walls of the top component 20 and the conversion cover plate 30 can also be provided with stepping pieces 15 to ensure the continuity of the stepping mechanism in the shaft.
[0056] According to a prefabricated and assembled inspection shaft provided by the utility model, in the height direction, the vertical spacing between any adjacent tread members 15 is the same; the height of the shaft component 10 is an integer multiple of the vertical spacing between the tread members 15. Specifically, the height design of the shaft component 10 follows the principle of integer multiples of the vertical spacing between the tread members 15. For example, when the step spacing is 360mm, the height options of the shaft component 10 can be 360mm, 720mm, 1080mm, 1440mm, 1800mm, etc., increasing in sequence. Since there is a clear mathematical relationship between the tread members 15 and the height of the shaft component 10, the required number and type of components can be accurately calculated according to the required total shaft height during the prefabrication production stage.
[0057] The prefabricated and assembled inspection well shaft according to the preferred embodiment of the utility model is prefabricated and processed uniformly in the factory to ensure the accuracy, quality and strength of the component products. The specific prefabricated components include:
[0058] Shaft component 10: Provide 5 different heights (360mm, 720mm, 1080mm, 1440mm, 1800mm, all designed with the vertical spacing of the steps as an integer multiple of 360mm) and 3 different shaft diameters Prefabricated parts are used to adapt to different depths, well frame cover sizes, internal facility installation and personnel going down the well.
[0059] Conversion cover 30: Provided change and change Two forms, with a thickness of 200 mm, are used to connect wellbore components 10 of different well diameters.
[0060] Top Member 20: Design The two forms have a flush upper portion, which is convenient for installing the well raising gasket 21 and the well frame cover 22.
[0061] Lifting washer 21: Provided There are two inner diameter sizes and three thickness specifications of 50mm, 100mm and 150mm, which are used for road height adjustment.
[0062] The concrete strength of all prefabricated components shall not be less than C30, the impermeability grade shall be ≥ P8, and the minimum cement dosage shall be 300Kg / m 3 , maximum water-binder ratio 0.5, maximum chloride ion content 0.15%, maximum alkali content 3.0kg / m 3 The steel bars are HPB300 (diameter ≤ 10mm) or HRB400 (diameter > 10mm), and the thickness of the protective layer is 35mm.
[0063] The shaft component 10, the conversion cover plate 30 and the top component 20 are symmetrically provided with lifting rings or lifting holes 14 in the middle of the side walls. Among them, the components with a height of less than 1 meter are made of Q235B grade round steel bars (exposed 70mm, welded to the steel skeleton, the specifications are determined according to the weight of the component) to make the lifting rings; the components with a height of more than 1 meter are provided with a depth of 60mm and an inner diameter of Use lifting holes (Q235B grade steel pipe) to avoid cutting the steel bars and fine-tune the position when necessary.
[0064] The components are connected by socket-type, and expansion rubber water stop strips are set at the joints, and 1:2 waterproof cement mortar is filled on both sides. The expansion rubber water stop strips should be clean and flat, free of impurities, and have neat edges. The surface of the prefabricated components is flat, and the dimensional error is controlled within the specified range (external frame ±3mm, plate thickness ±5mm, tongue and groove ±2mm).
[0065] During on-site assembly, precast concrete components that meet the size requirements are hoisted to the construction site by a small crane. The component joints are designed in the form of sockets and spigots, which are connected by sockets and spigots, which are convenient for accurate installation and the lower component sockets have a waterproof effect. The joint gaps are filled with 1:2 cement mortar, and all components are equipped with lifting rings to facilitate the lifting of small machines.
[0066] The prefabricated and assembled inspection well shaft of the utility model has high bearing capacity and is safe to use (using C30 reinforced concrete to prevent road subsidence). The prefabrication process ensures excellent quality, and the installation is convenient and the construction is fast (the components are prefabricated and directly installed on site, equipped with lifting rings or lifting holes 14, and using small lifting equipment).
[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.
[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A prefabricated inspection well shaft, characterized in that: include: A wellbore component (10), the wellbore component (10) comprising a wellbore body (11), a first socket portion (12) arranged at the top of the wellbore body (11), and a second socket portion (13) arranged at the bottom of the wellbore body (11) and adapted to the first socket portion (12), wherein a plurality of the wellbore components (10) are axially spliced to form a wellbore body; A top member (20) is arranged above the barrel and has a cylindrical structure adapted to the wellbore body (11). The bottom of the top member (20) is provided with the second socket portion (13); A well raising gasket (21) is arranged between the top member (20) and the well frame cover (22) of the inspection well.
2. The prefabricated inspection well shaft according to claim 1 is characterized in that: The plurality of shaft components (10) have various height specifications, and the shaft body is formed by splicing the shaft components (10) of one or more height specifications.
3. The prefabricated inspection well shaft according to claim 2 is characterized in that: When the barrel is formed by splicing the shaft components (10) of various height specifications, the height of the shaft component (10) located at the bottom is greater than or equal to the height of the shaft component (10) located at the top.
4. The prefabricated inspection well shaft according to claim 1 is characterized in that: The plurality of wellbore components (10) have a variety of radial dimensions; A conversion cover plate (30) is arranged between the shaft components (10) of different radial dimensions; The upper and lower sections of the conversion cover plate (30) are respectively provided with the first socket part (12) and the second socket part (13) adapted to the corresponding shaft component (10).
5. The prefabricated inspection well shaft according to claim 4 is characterized in that: When the barrel is formed by splicing the wellbore components (10) of various radial size specifications, the radial size of the wellbore component (10) located at the bottom is greater than or equal to the radial size of the wellbore component (10) located at the top.
6. The prefabricated inspection well shaft according to claim 4, characterized in that: The central axes of the first socket portion (12) and the second socket portion (13) on the conversion cover plate (30) deviate from each other, so that the conversion cover plate (30) and the shaft component (10) connected to the upper and lower sides thereof form a single-side continuous shaft wall structure.
7. The prefabricated inspection well shaft according to claim 4, characterized in that: Lifting rings or lifting holes (14) are symmetrically arranged on the outer side surfaces of the shaft component (10), the top component (20) and the conversion cover plate (30).
8. The prefabricated inspection shaft according to any one of claims 1 to 7, characterized in that: One of the first socket part (12) and the second socket part (13) is an inner ring step structure, and the other is an outer ring step structure matched with the inner ring step structure.
9. The prefabricated inspection shaft according to any one of claims 1 to 7, characterized in that: A plurality of tread members (15) are arranged on the inner side wall of the shaft member (10); The plurality of tread elements (15) are evenly distributed in the height direction of the shaft component (10).
10. The prefabricated inspection shaft according to claim 9, characterized in that: In the height direction, the vertical spacing between any adjacent tread members (15) is the same; The height of the shaft component (10) is an integer multiple of the vertical spacing between the tread members (15).