Assembled vertical shaft pipe fitting and construction method

Abstract

The present application provides an assembled vertical shaft pipe fitting and construction method, comprising a corrugated plate, a reinforcement body, and a reinforcement member; the corrugated plate is an arc-shaped structural plate adapted to the vertical shaft wall, and its cross-section along the axial direction of the vertical shaft is corrugated. The corrugated plate is provided with circumferential connecting portions that can be adapted to be connected to each other on both sides along the circumference of the vertical shaft, and is provided with axial connecting portions that can be adapted to be connected to each other on both ends along the axial direction of the vertical shaft; the reinforcement body is provided on the inner wall side of the corrugated plate and adapted to the shape of the corrugated plate, and the reinforcement body is provided with accommodation spaces on both sides connected along the circumference of the vertical shaft and on both ends connected axially; the reinforcement member is provided in the accommodation spaces of adjacent reinforcement bodies; multiple corrugated plates and reinforcement bodies are connected along the circumference of the vertical shaft to form an annular structure, and can be connected along the axial direction of the vertical shaft to form the required construction depth. The assembled vertical shaft pipe fitting and construction method can quickly seal the rock wall around the vertical shaft under harsh geological conditions, and at the same time have the advantages of easy installation, safe construction, and high construction efficiency.

Description

Technical Field

[0001] The present invention relates to the field of underground engineering, and in particular to an assembled vertical shaft pipe fitting and a construction method. Background Art

[0002] For the construction of deep and large vertical shaft projects, traditional vertical shaft construction methods have low efficiency, high risks, strong initial support, and high investment. The stratum conditions are complex and changeable, and may be rich in groundwater. During the vertical shaft construction process, in order to effectively control the deformation of the surrounding rock and prevent the collapse of the surrounding rock, the excavation method of coal mines is often used to adopt a composite lining structure with high strength and the ability to quickly close the excavation surface. The lining structure is often made of reinforced concrete, and the initial support adopts a steel arch frame and a shotcrete mesh structure. When this method is used for construction, the operation time is long, the construction progress is slow, and the working environment is poor, which affects the health of the workers. It is greatly affected by the stratum conditions, and the construction standards and quality are difficult to guarantee. After the concrete construction is completed, the initial strength is low and it is very easy to be damaged in subsequent construction, causing quality and safety hazards.

[0003] For example, patent application number CN201310704144.0 proposes an equipment and construction method for vertical shaft concrete lining construction, wherein the equipment includes a formwork system, an operating system, a lifting device, a wellhead fixing device, a suspension device and a control device; the formwork system is a sliding module, including a concrete formwork, a circle and a lifting frame; the operating platform is arranged on the sliding module; the lifting device is a hydraulic sliding system, including a climbing pole, a hydraulic jack and a hydraulic control device, which drives the sliding module to slide; the wellhead fixing device is a wellhead working platform; the suspension device is arranged on the wellhead working platform; and the control device is arranged on the wellhead working platform. This method is to construct a vertical shaft by pouring concrete on site, which requires the installation of complex auxiliary equipment to realize the on-site pouring operation. It can be seen from its implementation steps that this solution has a cumbersome underground operation process and has relatively high requirements on equipment reliability and personnel quality, which increases the risk of underground on-site pouring operations and increases environmental pollution. Moreover, in actual construction conditions, the formation conditions are not fixed. Especially when the vertical shaft is built from top to bottom, pouring concrete on site will not only bring about the above-mentioned construction difficulties and complicated on-site equipment layout problems, but it is also more likely that the concrete poured on site will be damaged during the subsequent construction process, affecting the construction quality. Therefore, this solution has defects.

[0004] In summary, for the construction of deep and large vertical shafts, in order to effectively control the deformation of the surrounding rock and prevent the collapse of the surrounding rock, it is necessary to further optimize the structural scheme during the shaft construction process, so as to minimize the disturbance and impact on the stratum during the shaft excavation and construction process, while ensuring the safety of the construction process. Summary of the Invention

[0005] In order to solve the problems of safety hazards easily caused by long exposure of rock walls during the construction of existing vertical shafts under harsh geological conditions, and environmental pollution and construction risks caused by on-site pouring of concrete, the present application provides an assembled vertical shaft pipe fitting and construction method, which can quickly seal the rock walls around the vertical shaft under harsh geological conditions, ensure the stability of the shaft wall structure, avoid environmental pollution and construction risks caused by cast-in-place concrete, and at the same time have the advantages of easy installation, safe construction and high construction efficiency.

[0006] The technical solution adopted by the present application to solve its technical problem is: an assembled vertical shaft pipe fitting, characterized in that it includes a corrugated plate, a reinforcement body, and a reinforcement member.

[0007] The corrugated plate is an arc-shaped structural plate adapted to the wall of the shaft, and its cross-section along the axial direction of the shaft is corrugated. The corrugated plate is provided with circumferential connecting parts that can be adapted to be connected to each other on both sides along the circumference of the shaft, and is provided with axial connecting parts that can be adapted to be connected to each other at both ends along the axial direction of the shaft.

[0008] The reinforcement body is arranged on the inner wall side of the corrugated plate and is adapted to the shape of the corrugated plate to enhance the structural strength of the pipe fitting. The reinforcement body is provided with accommodating spaces on both sides connected along the circumferential direction of the shaft and on both ends connected axially to facilitate installation operations.

[0009] The reinforcement member is arranged in the accommodation space of adjacent reinforcement bodies to enhance the connection strength between the reinforcement bodies.

[0010] A plurality of corrugated plates and reinforcement bodies are connected along the circumference of the shaft to form an annular structure, and can be connected along the axial direction of the shaft to form a desired construction depth.

[0011] In a specific embodiment, the circumferential connection portion of the corrugated plate is an annular connecting plate of a plate-like structure provided at the connection end, one end face of the annular connecting plate is seamlessly connected to the connection end of the corrugated plate to play a waterproof role, and the other end face of the annular connecting plate can be fitted and connected to the end face of the annular connecting plate of the adjacent corrugated plate; the axial connection portion of the corrugated plate is a vertical connecting plate of a plate-like structure provided on the inner wall side of the connection end, one end face of the vertical connecting plate is seamlessly connected to the connection end of the corrugated plate to play a waterproof role, and the other end face of the vertical connecting plate can be fitted and connected to the end face of the vertical connecting plate of the adjacent corrugated plate.

[0012] In a specific embodiment, the inner wall of the reinforcement body protrudes inwardly in the shaft radial direction beyond the annular web and the vertical web of the corrugated plate at least at a position around the accommodation space thereof.

[0013] In a specific embodiment, the accommodating space is a groove provided on the inner wall sides of both sides of the augmentation body connected circumferentially along the shaft and at both ends connected axially. The groove is an open structure along the connection direction of the augmentation body, so as to be connected with the opening structure of the corresponding groove of the augmentation body adjacent to the connection direction and connected to form a splicing groove.

[0014] In a specific embodiment, the splicing groove is in the shape of an I-shaped wedge groove along the connection direction of the reinforcement body, and the reinforcement member is an I-shaped wedge body adapted to the shape of the I-shaped wedge groove.

[0015] In a specific embodiment, each of the corrugated plate annular connecting plates and vertical connecting plates is provided with connecting portions at positions corresponding to the grooves of the reinforcement bodies, so as to utilize the space in the grooves for construction and connection.

[0016] In a specific embodiment, water-stopping members are provided between the circumferential connecting portions of the corrugated plates of the pipe and between the axial connecting portions of the corrugated plates.

[0017] In a specific embodiment, the pipe is further provided with grouting holes on the pipe wall at positions corresponding to the corrugated plate and the reinforcement body, so as to facilitate the injection of polymer into the outer wall side of the pipe through the grouting holes.

[0018] In a specific embodiment, the construction method of the assembled vertical shaft pipe fitting comprises the steps of:

[0019] S1, the depth of the space opened down the shaft to accommodate the first section of pipe;

[0020] S2, connecting the circumferential connecting portions of the corrugated plates adjacent to each other along the circumference of the shaft, where the water stop members are installed;

[0021] S3, installing reinforcement members in the splicing grooves where the reinforcement bodies of the pipe section are connected along the circumference of the shaft, and injecting polymer into the outer wall side through the grouting holes of the pipe section;

[0022] S4, continue to open up the space depth that can accommodate the next section of pipe fittings downward along the vertical shaft;

[0023] S5. Connect the axial connection portions of the corrugated plates adjacent to the previous pipe section along the axial direction of the shaft, where the water stop pieces are installed; and connect the circumferential connection portions of the corrugated plates adjacent to the previous pipe section along the circumferential direction of the shaft, where the water stop pieces are installed;

[0024] S6. Install reinforcement members in the splicing grooves where the reinforcement bodies of the pipe section are connected along the circumferential direction of the shaft, and in the splicing grooves where the reinforcement bodies of the previous pipe section are connected along the axial direction of the shaft, and inject polymer into the outer wall side through the grouting holes of the pipe section;

[0025] S7. Repeat steps S4, S5, and S6 until the pipe installation construction within the shaft depth is completed.

[0026] In a specific embodiment, in the construction method of the assembled vertical shaft pipe, when connecting the axial connection parts of adjacent corrugated sheets, the circumferential connection parts thereof are installed in a staggered manner with respect to each other in the axial direction.

[0027] The advantages of the embodiments of the present application are:

[0028] 1. The prefabricated shaft pipe fittings adopt a simple assembly construction method, which eliminates the initial support construction in the shaft construction, reduces the exposure time of the rock wall, minimizes the disturbance and impact on the stratum as much as possible, reduces the risk of pit wall collapse and water gushing, and ensures the safety of construction workers.

[0029] 2. Prefabricated shaft pipe fittings improve the construction modularity level and assembly interchangeability of components by adopting prefabricated and assembled structures, reduce construction intensity, overcome the existing problems of complex construction procedures and slow construction, and improve the construction efficiency of shaft construction.

[0030] 3. A storage space is provided between the reinforcement bodies of the prefabricated shaft pipe fittings to facilitate the construction of adjacent corrugated plates. At the same time, reinforcement members are used to adapt the storage space to further improve the connection stability and structural strength of the components. Waterstops are provided at the connection points between the corrugated plates to improve the waterproof performance of the pipe fitting structure.

[0031] 4. The construction method of prefabricated shaft pipe fittings is combined with the characteristics of the pipe fittings. Through section-by-section installation and construction, the corresponding pipe fittings are assembled after each part of the shaft is completed. After the corresponding pipe fitting structure is assembled, the bottom is supported by the rock layer, which greatly reduces the construction risk during the shaft construction process.

[0032] 5. The construction method of prefabricated shaft pipe fittings provides standardized and systematic guidance for shaft construction operations based on the installation characteristics of the prefabricated components, thereby improving operational efficiency and engineering construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall assembly of an assembled vertical shaft pipe fitting according to the present invention;

[0034] Figure 2 This is a schematic diagram of a segmented assembled vertical shaft pipe fitting according to the present invention;

[0035] Figure 3 This is a schematic diagram of a corrugated plate of an assembled shaft pipe fitting according to the present invention;

[0036] Figure 4 This is a schematic diagram of axially adjacent staggered installation of assembled vertical shaft pipe fittings according to the present invention;

[0037] Figure 5 This is a schematic diagram of circumferentially adjacent installation of assembled vertical shaft pipe fittings according to the present invention;

[0038] Figure 6 This is a schematic diagram of the annular structure of an assembled vertical shaft pipe fitting according to the present invention;

[0039] Figure 7 This is a schematic diagram of a reinforcement member of an assembled vertical shaft pipe fitting according to the present invention.

[0040] Description of main reference numerals:

[0041] 1- pipe fitting; 2- corrugated plate; 3- reinforcement body; 4- vertical connecting plate; 5- circumferential connecting plate; 6- connection part; 7- reinforcement member; 8- groove; 9- grouting hole; 10- bolt; 11- water stop. DETAILED DESCRIPTION

[0042] The present application provides an assembled vertical shaft pipe fitting and a construction method to solve the problems of the existing vertical shaft construction under harsh geological conditions, such as the prolonged exposure of rock walls, which can easily lead to safety hazards, and the environmental pollution and construction risks caused by on-site concrete pouring. The overall concept is as follows:

[0043] See also Figure 1 、 Figure 2 The present invention provides an assembled vertical shaft pipe fitting, comprising a corrugated plate 2, a reinforcement body 3, and a reinforcement member 7. The corrugated plate 2 is an arc-shaped structural plate adapted to the wall of the vertical shaft, and its cross section along the axial direction of the vertical shaft is corrugated. The corrugated plate 2 is provided with circumferential connecting portions that can be adapted to be connected to each other on both sides along the circumference of the vertical shaft, and with axial connecting portions that can be adapted to be connected to each other on both ends along the axial direction of the vertical shaft. The reinforcement body 3 is provided on the inner wall side of the corrugated plate 2 and adapted to the shape of the corrugated plate 2 to enhance the structural strength of the pipe fitting 1. The reinforcement body 3 is provided with accommodating spaces on both sides of the circumferential connection along the vertical shaft and at both ends of the axial connection to facilitate installation operations. The reinforcement member 7 is provided in the accommodating spaces of adjacent reinforcement bodies 3 to enhance the connection strength between the reinforcement bodies 3. Please refer to Figure 1 、 Figure 6 Multiple corrugated plates 2 and reinforcement bodies 3 are connected circumferentially to form an annular structure, and can also be connected axially to achieve the desired construction depth. This solution utilizes a segmented design for the pipe fitting 1, with circumferential and axial connection sections at corresponding connection locations. This facilitates the circumferential assembly of the pipe fitting 1 into an annular structure, while also allowing for axial assembly to meet the construction requirements of shafts of varying depths. The design of the receiving space provides construction space for connecting the various components, while the reinforcement body 3 and reinforcement member 7 ensure the overall structural strength of the pipe fitting 1.

[0044] Specifically, see Figure 3The circumferential connection of the corrugated plate 2 is an annular connecting plate 5 of a plate-like structure provided at the connection end. One end face of the annular connecting plate 5 is seamlessly connected to the connection end of the corrugated plate 2 to achieve a waterproof effect, and the other end face of the annular connecting plate 5 can be fitted and connected to the end face of the annular connecting plate 5 of the adjacent corrugated plate 2; the axial connection of the corrugated plate 2 is a vertical connecting plate 4 of a plate-like structure provided on the inner wall side of the connection end. One end face of the vertical connecting plate 4 is seamlessly connected to the connection end of the corrugated plate 2 to achieve a waterproof effect, and the other end face of the vertical connecting plate 4 can be fitted and connected to the end face of the vertical connecting plate 4 of the adjacent corrugated plate 2. This design method can be processed by forming the steel plate and performing folding or welding operations on its edge to obtain the corresponding corrugated plate 2, annular connecting plate 5, and vertical connecting plate 4. This not only reduces the cost of accessories and processing costs, but also ensures waterproofing needs. Please refer to Figure 4 In some embodiments, when connecting the axial connection parts of adjacent corrugated plates 2, their circumferential connection parts are installed in an axially staggered manner to optimize the stress performance of the pipe fitting 1 after circumferential and axial assembly and improve the stability of the overall structure.

[0045] Since the reinforcement body 3 is arranged on the inner wall side of the corrugated plate 2 and is adapted to the shape of the corrugated plate 2, it can be specifically made of a concrete structure. As mentioned above, in order to connect adjacent corrugated plates 2, an accommodating space is provided on both sides of the circumferential connection and the two ends of the axial connection of the reinforcement body 3 to realize the connection of the adjacent annular connecting plates 5 and the vertical connecting plates 4 at this position. In this embodiment, the accommodating space is a groove 8 provided on the inner wall side of both sides of the circumferential connection and the two ends of the axial connection of the reinforcement body 3 along the shaft. The groove 8 is an open structure along the connection direction of the reinforcement body 3 so that the opening structure of the corresponding groove 8 of the reinforcement body 3 adjacent to the connection direction is connected and connected to form a splicing groove. The specific structure of the splicing groove in this example is as follows: Figure 4 、 Figure 5 The illustration shows an I-shaped wedge groove with both ends arranged along the connection direction of the reinforcement body. Therefore, to achieve connection between the corrugated sheets 2, the circumferential connecting plates 5 and the vertical connecting plates 4 of each corrugated sheet 2 are provided with connecting portions 6 at positions corresponding to the grooves 8 of the reinforcement body 3, utilizing the space in the grooves 8 for construction connection. Specifically, in some embodiments, the connection can be achieved by direct spot welding or riveting at the connecting portions 6. Preferably, in this embodiment, bolt holes are provided in the connecting portions 6, and adjacent corrugated sheets 2 are connected at the connecting portions 6 using bolts 10.

[0046] After the circumferential connecting plates 5 and the vertical connecting plates 4 of the adjacent corrugated plates 2 are connected at the joints 6 at the receiving space by bolts 10, it is necessary to further enhance the structural strength of the receiving space. Therefore, a reinforcement member 7 is provided in the receiving space. The structure and arrangement of the reinforcement member 7 can be various. For example, a structural member with an embedded groove in the middle to embed the circumferential connecting plates 5 and the vertical connecting plates 4 and a preset tension along the connection direction can be provided. However, in order to optimize the structural processing cost, in this embodiment, the reinforcement member 7 is adapted to the shape of the splicing groove, and the inner wall side of the reinforcement body 3 is at least at the position around the receiving space. The annular connecting plate 5 and the vertical connecting plate 4 protrude radially inward from the corrugated plate 2 in the vertical shaft. In this way, the reinforcement member 7 can achieve a certain embedding depth in the splicing groove even due to the presence of the annular connecting plate 5 and the vertical connecting plate 4, thereby ensuring the connection strength and avoiding further adaptability reprocessing of the annular connecting plate 5 and the vertical connecting plate 4, reducing the processing steps. Preferably, the inner wall side of the reinforcement body 3 can protrude radially inward from the annular connecting plate 5 and the vertical connecting plate 4 of the corrugated plate 2 by a certain height, so as to further reduce the difficulty of casting the reinforcement body 3. For the specific structure of the reinforcement member 7 in this example, please refer to Figure 7 , an "I"-shaped wedge that matches the shape of the splicing groove. Therefore, after being inserted into the splicing groove, the reinforcement member 7 of this structure can prevent circumferential movement between adjacent reinforcement bodies 3 within the same pipe section 1, and can also prevent axial movement between adjacent reinforcement bodies 3 of the upper and lower assembled pipes 1. It also improves the axial shear and anti-slip capabilities between adjacent reinforcement bodies 3 within the same pipe section 1, and improves the horizontal shear and anti-slip capabilities between adjacent reinforcement bodies 3 of the upper and lower assembled pipes 1.

[0047] In addition, in order to improve the waterproof performance after the adjacent corrugated plates 2 are connected, waterstops 11 are provided between the circumferential connection parts of the corrugated plates 2 of the pipe 1 and between the axial connection parts of the corrugated plates 2. The waterstops 11 can specifically be rubber waterstop strips.

[0048] In order to further improve the waterproof performance of the pipe fitting 1 and the stability of the surrounding rock formations during the shaft construction process, the pipe fitting 1 is further provided with grouting holes 9 on the pipe wall at the corresponding positions of the corrugated plate 2 and the reinforcement body 3, so that a polymer can be injected into the outer wall side of the pipe fitting 1 through the grouting holes 9 during the construction process. The polymer can specifically be a high molecular polymer with waterproof performance.

[0049] This embodiment also provides a construction method for an assembled vertical shaft pipe fitting, comprising the following steps:

[0050] S1, a space deep enough to accommodate the first section of pipe 1 is opened downwards along the vertical shaft;

[0051] S2, connecting the circumferential connecting portions of the corrugated plates 2 adjacent to each other along the circumferential direction of the shaft, where the water stop members 11 are installed;

[0052] S3, installing reinforcement members 7 in the splicing grooves of the reinforcement bodies 3 of the pipe section 1 connected along the circumferential direction of the shaft, and injecting polymer into the outer wall side through the grouting holes 9 of the pipe section 1;

[0053] S4, continue to open the space depth that can accommodate the next section of pipe 1 downward along the vertical shaft;

[0054] S5. Connect the axial connection portions of the corrugated plates 2 adjacent to the previous pipe section 1 along the axial direction of the shaft, where the water stop 11 is installed. Connect the circumferential connection portions of the corrugated plates 2 adjacent to the previous pipe section 1 along the circumferential direction of the shaft, where the water stop 11 is installed.

[0055] S6. Install reinforcement members 7 in the splicing grooves connected along the circumferential direction of the shaft by the reinforcement bodies 3 of the pipe section 1 and in the splicing grooves connected along the axial direction of the shaft to the reinforcement bodies 3 of the previous pipe section 1, and inject polymer into the outer wall side through the grouting holes 9 of the pipe section 1;

[0056] S7. Repeat steps S4, S5, and S6 until the installation of the pipe fitting 1 within the shaft depth is completed.

[0057] Specifically, in this example, the pipe fitting 1 comprises eight symmetrically structured, identically sized corrugated plates 2 that can be interchanged in the circumferential and axial directions, and a reinforced concrete body 3 precast on the inner wall of the corrugated plates 2. The reinforcement member 7 is an "I"-shaped wedge. During construction, a vertical shaft is excavated downward along the depth direction, and the components of the pipe fitting 1 required for the excavation height are hoisted in sequence. Rubber waterstops are installed at the locations where the corrugated plates 2 are to be connected. The splicing groove formed by the adjacent components, i.e., the application portion 6 at the "I"-shaped wedge groove, is fixed with bolts 10. The reinforcement member 7, i.e., the "I"-shaped wedge, is then embedded. Grouting is then injected into the back of the pipe fitting 1 through the grouting holes 9 on the inner wall of the pipe fitting 1 to form a back-wall grouting layer, which further seals the surrounding rock cracks, reinforces the surrounding rock, and stops water. During installation, the coaxiality of the pipe fitting 1 and the vertical shaft structure in the axial direction can be controlled by over-excavation and under-excavation and grouting into the back of the pipe fitting 1. After the installation of the first section of pipe fitting 1 is completed, continue to dig downwards and hoist the components of the next section of pipe fitting 1 in sequence. A rubber water stop strip is pre-installed between the vertical connecting plate 4 on the upper part of the corrugated plate 2 of the section of pipe fitting 1 and the vertical connecting plate 4 on the lower part of the corrugated plate 2 of the previous section of pipe fitting 1. The splicing groove formed after the adjacent parts are connected, that is, the connecting part 6 at the "I" wedge groove is fixedly connected with bolts 10. When connecting the vertical connecting plates 4 of the upper and lower adjacent corrugated sheets, ensure that their circumferential connecting parts are staggered in the axial direction. The circumferential adjacent corrugated sheets of the section of pipe fitting 1 are staggered in the axial direction. Rubber water stop strips are also pre-installed between the annular connecting plates 5 of the plate 2. The joint groove formed after the adjacent parts are fixedly connected with the connecting parts 6 at the "I" wedge groove with bolts 10. Then, the reinforcement member 7, that is, the "I" wedge body, is embedded in the joint groove formed after each connection, that is, the "I" wedge groove. Then, grouting is injected into the back of the pipe fitting 1 through the grouting hole 9 on the inner wall of the section of pipe fitting 1 to form a back-wall grouting layer. Continue to excavate the vertical shaft downward and install the pipe fitting 1 in the same way until the installation construction of the vertical shaft pipe fitting 1 of the required depth is completed.

[0058] In summary, the present invention solves the problems of the existing vertical shaft under harsh geological conditions, such as the long exposure time of the rock wall, which is easy to cause safety hazards, and the environmental pollution and construction risks caused by on-site pouring of concrete, through the prefabricated vertical shaft pipe fittings. It can quickly seal the rock wall around the vertical shaft under harsh geological conditions, ensure the stability of the shaft wall structure, avoid environmental pollution and construction risks caused by cast-in-situ concrete, and have the advantages of easy installation, safe construction and high construction efficiency. At the same time, the construction method of the present invention standardizes and systematically guides the construction work of the vertical shaft according to the installation characteristics of the prefabricated components, thereby improving the operation efficiency and engineering construction quality.

[0059] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An assembled vertical shaft pipe fitting, characterized in that: include: The corrugated plate is an arc-shaped structural plate adapted to the shaft wall. The cross section along the shaft axis is corrugated. The corrugated plate is provided with circumferential connecting portions that can be adapted to connect with each other on both sides along the shaft circumference, and axial connecting portions that can be adapted to connect with each other on both ends along the shaft axis. An reinforcement body is provided on the inner wall of the corrugated plate and is adapted to the shape of the corrugated plate to enhance the structural strength of the pipe fitting. The reinforcement body is provided with accommodation spaces on both sides connected along the circumferential direction of the shaft and at both ends connected axially to facilitate installation operations; as well as A reinforcing member disposed in the receiving space between adjacent reinforcing bodies to enhance the connection strength between the reinforcing bodies; Multiple corrugated plates and reinforcement bodies are connected along the circumference of the shaft to form an annular structure, and can be connected along the axial direction of the shaft to form a desired construction depth; in, The circumferential connecting portion of the corrugated plate is an annular connecting plate of a plate-like structure provided at the connecting end. One end surface of the annular connecting plate is seamlessly connected to the connecting end of the corrugated plate to achieve a waterproof effect. The other end surface of the annular connecting plate can be fitted and connected to the end surface of the annular connecting plate of the adjacent corrugated plate. The axial connection portion of the corrugated plate is a vertical connecting plate of a plate-like structure provided on the inner wall side of the connecting end. One end surface of the vertical connecting plate is seamlessly connected to the connecting end of the corrugated plate to achieve a waterproof effect. The other end surface of the vertical connecting plate can be fitted and connected to the end surface of the vertical connecting plate of the adjacent corrugated plate. The inner wall side of the reinforcement body protrudes inwardly from the annular connecting plate and the vertical connecting plate of the corrugated plate at least at the position around the accommodating space thereof in the radial direction of the shaft; The accommodation space is a groove provided on the inner wall of both sides of the reinforcement body connected along the circumferential direction of the shaft and the inner wall of both ends connected axially. The groove is an open structure along the connection direction of the reinforcement body, so as to connect with and communicate with the opening structure of the corresponding groove of the reinforcement body adjacent to the connection direction to form a splicing groove; The splicing groove is in the shape of an I-shaped wedge groove along the connection direction of the reinforcement body, and the reinforcement piece is an I-shaped wedge body adapted to the shape of the I-shaped wedge groove.

2. The assembled vertical shaft pipe fitting according to claim 1, characterized in that: Each of the corrugated plate annular connecting plates and vertical connecting plates is provided with connecting portions at positions corresponding to the grooves of the reinforcement bodies, so as to utilize the space in the grooves for construction connection.

3. An assembled vertical shaft pipe fitting according to claim 1 or 2, characterized in that: Water stopping parts are provided between the circumferential connecting parts of the corrugated plates of the pipe fitting and between the axial connecting parts of the corrugated plates.

4. The assembled vertical shaft pipe fitting according to claim 3, characterized in that: The pipe fitting is further provided with grouting holes on the pipe wall at positions corresponding to the corrugated plate and the reinforcement body, so as to facilitate the injection of polymer into the outer wall side of the pipe fitting through the grouting holes.

5. A construction method for an assembled vertical shaft pipe fitting according to claim 4, characterized in that: Including steps: S1, the depth of the space opened down the shaft to accommodate the first section of pipe; S2, connecting the circumferential connecting portions of the corrugated plates adjacent to each other along the circumference of the shaft, where the water stop members are installed; S3, installing reinforcement members in the splicing grooves where the reinforcement bodies of the pipe section are connected along the circumference of the shaft, and injecting polymer into the outer wall side through the grouting holes of the pipe section; S4, continue to open up the space depth that can accommodate the next section of pipe fittings downward along the vertical shaft; S5. Connect the axial connection portions of the corrugated plates adjacent to the previous pipe section along the axial direction of the shaft, where the water stop pieces are installed; and connect the circumferential connection portions of the corrugated plates adjacent to the previous pipe section along the circumferential direction of the shaft, where the water stop pieces are installed; S6. Install reinforcement members in the splicing grooves where the reinforcement bodies of the pipe section are connected along the circumferential direction of the shaft, and in the splicing grooves where the reinforcement bodies of the previous pipe section are connected along the axial direction of the shaft, and inject polymer into the outer wall side through the grouting holes of the pipe section; S7. Repeat steps S4, S5, and S6 until the pipe installation construction within the shaft depth is completed.

6. A construction method according to claim 5, characterized in that: When connecting the axial connection parts of adjacent corrugated sheets, their circumferential connection parts are installed in a staggered manner with respect to each other in the axial direction.

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