CN219732032U - Stainless steel retaining wall support for assembled round top pipe well - Google Patents

Abstract

The utility model relates to a stainless steel retaining wall support of an assembled round top pipe well, which comprises the following components: the first stainless steel plate retaining wall and the second stainless steel plate retaining wall comprise a plurality of stainless steel retaining rings, the stainless steel plate retaining rings are provided with the stainless steel plates, the first square steel pipes and the second square steel pipes with hanging rings, the second square steel pipes and the first square steel pipes are arranged in a staggered mode, the first stainless steel plate retaining wall and the second stainless steel plate retaining wall are also provided with first mounting holes for fixing soil nails, second mounting holes for fixing reverse filtration bags and drain pipes, the soil nails penetrate through soil layers through the first mounting holes and are arranged obliquely along the second direction, welding is not needed between the upper layer retaining wall and the lower layer retaining wall of the assembled circular top pipe well, construction efficiency is improved, and construction quality is guaranteed.

Description

Stainless steel retaining wall support for assembled round top pipe well

Technical Field

The utility model relates to the technical field of municipal pipe network construction, in particular to an assembled stainless steel wall protection support for a circular top pipe well.

Background

With the gradual development of the economic society, urban population increases, municipal facilities, auxiliary building (construction) buildings and the like are expanded or replaced, municipal pipe networks shuttle in the current cities, and particularly sewage pipe networks with deep burial depths are limited by the current building (construction) buildings and the like and cannot be excavated by slope discharge, and pipe jacking construction is needed.

In the supporting technology of the sewage pipe network working pit, the modes of reverse construction method wall protection, open caisson and the like are often adopted, the traditional construction method has long construction period and high temporary supporting structure measure cost, the engineering investment is not beneficial to being saved, the construction period is reduced, the engineering cost is reduced, and the safety of municipal pipe network engineering construction is guaranteed.

Disclosure of Invention

Based on the above description, the utility model provides the stainless steel retaining wall support for the assembled round top pipe well, the upper and lower retaining walls of the assembled round top pipe well are fastened and connected by adopting the connecting grooves and the stainless steel bolts, welding is not needed, the construction efficiency is improved to a certain extent, the construction quality is guaranteed, the standardized retaining wall ring is convenient to transport and construct, quick installation and disassembly can be realized, the locking port section retaining wall and the standard section retaining wall are removed one by one for recycling after the construction of the top pipe and the internal well chamber is completed, and the turnover rate of the assembled steel structure is high, so that the engineering investment is saved.

The technical scheme for solving the technical problems is as follows: the utility model provides a stainless steel dado support of circular top tube well of assembled, its characterized in that includes: the first stainless steel plate retaining wall and the second stainless steel plate retaining wall comprise a plurality of stainless steel retaining rings, the stainless steel retaining rings are provided with stainless steel plates, first square steel pipes and second square steel pipes with hanging rings, the second square steel pipes and the first square steel pipes are arranged in a staggered mode, first mounting holes for fixing soil nails, second mounting holes for fixing reverse filtration bags and drain pipes are further formed in the first stainless steel plate retaining wall and the second stainless steel plate retaining wall, the soil nails penetrate through soil layers to be fixed through the first mounting holes, and the drain pipes are arranged in a slope mode along the second direction.

Based on the technical scheme, the utility model can also be improved as follows:

further, the first stainless steel plate retaining wall is of an inverted L-shaped structure, and the second stainless steel plate retaining wall is of an inverted S-shaped structure, so that the diameter of the round pipe jacking well is unchanged.

Further, a plurality of stainless steel dado ring arranges in proper order and sets up, and a plurality of stainless steel dado ring interconnect encloses into a cylinder structure, the corrosion resistant plate is provided with the polylith, the corrosion resistant plate includes first steel sheet, second steel sheet, first steel sheet, second steel sheet one end are provided with the bell and spigot mouth, first steel sheet, second steel sheet other end are provided with down the bell and spigot mouth, the upper bell and spigot mouth of first steel sheet with the bell and spigot mouth of second steel sheet down dock each other, until a plurality of the corrosion resistant plate dock each other and constitute complete cylinder structure.

Further, a fastener is arranged between the first stainless steel plate retaining wall and the second stainless steel plate retaining wall, and the second stainless steel plate retaining walls are fixedly connected through the fastener.

Further, the fastener includes first fastening bolt, second fastening bolt, first fastening bolt is provided with the shape and is the first spread groove of crotch column structure, the second fastening bolt is provided with the shape and is the second spread groove of falling crotch column structure, first spread groove with hang down between the second spread groove and be connected, just first spread groove with the second spread groove is provided with through-hole and screw, the screw passes through-hole fixed connection.

Further, the hanging ring is fixedly connected to the second azimuth square steel pipes, and the hanging ring is arranged between the two first azimuth square steel pipes.

Further, the two ends of the first square steel pipe are provided with butt joints, the first square steel pipes are mutually connected through the butt joints to form a circular structure, the soil nails penetrate through the first mounting holes to connect the stainless steel plates with the outer wall soil layer of the circular top pipe well, and the water drain pipe penetrates through the second mounting holes to reach the outer wall soil layer of the circular top pipe well.

Further, the end part of the drain pipe, which is close to one side of the outer wall soil layer of the circular top pipe well, is fixedly provided with the reverse filtering bag, the other end of the drain pipe is provided with geotechnical cloth, the geotechnical cloth wraps the water outlet of the drain pipe, and soil nails are arranged at staggered intervals with the drain pipe.

Further, the drain pipe is provided with threads, nuts are fixed on the first stainless steel plate retaining wall and the second stainless steel plate retaining wall, the drain pipe is connected with the nuts through the threads, and the drain pipe is inclined at an inclination angle of 10-20 degrees along the second direction.

Further, the cast-in-situ reinforced concrete structure comprises a well wall cast-in-situ section and a bottom plate cast-in-situ section, wherein the well wall cast-in-situ section is reserved with holes which can penetrate through an external jacking pipeline.

Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:

1. the utility model provides an assembled stainless steel wall protection support for a circular top pipe well, which sequentially comprises a locking section stainless steel plate wall protection, a standard section stainless steel plate wall protection and a bottom cast-in-situ reinforced concrete section from top to bottom; the upper and lower layers of the protection walls of the assembled round top pipe well are fastened and connected by the connecting grooves and the stainless steel bolts, welding is not needed, the construction efficiency is improved to a certain extent, and the construction quality is guaranteed.

2. The wall protection ring is convenient to transport and construct through standardization, can realize quick installation and disassembly, and the locking notch section wall protection and the standard section wall protection are dismantled one by one after the construction of the top pipe and the internal well chamber is completed, so that the prefabricated steel structure turnover rate is high, and the engineering investment is saved.

Drawings

Fig. 1 is a schematic structural view of an assembled stainless steel wall support for a circular top pipe well according to an embodiment of the present utility model;

fig. 2 is a schematic top view of an assembled stainless steel wall support for a circular top pipe well according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a horizontal connection structure of an assembled round roof pipe well stainless steel retaining wall support according to an embodiment of the present utility model;

fig. 4 is a schematic view of a vertical connection structure of an assembled stainless steel wall guard of a circular top pipe well according to an embodiment of the present utility model;

FIG. 5 is a schematic view of an expanded view of a stainless steel retaining ring for a fabricated circular roof tubing well according to an embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of a wall ring structure of a stainless steel wall support for an assembled round roof pipe well according to an embodiment of the present utility model;

FIG. 7 is an enlarged schematic view of a drain pipe structure of an assembled round roof pipe well stainless steel retaining wall support according to an embodiment of the present utility model;

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Embodiments of the utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", "surrounding", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the construction referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-7, the present embodiment provides a stainless steel wall support for an assembled round roof pipe well, comprising: a first stainless steel plate retaining wall 2 arranged at the locking section of the circular top pipe well 1, a second stainless steel plate retaining wall 3 provided with at least two moulds at the standard section and a cast-in-situ reinforced concrete structure 4 arranged at the bottom from top to bottom in sequence;

the first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3 respectively comprise a plurality of stainless steel retaining rings 31, the stainless steel retaining rings 31 are provided with stainless steel plates 311, first square steel pipes 312 and second square steel pipes 313 with hanging rings 313a, the second square steel pipes 313 and the first square steel pipes 312 are arranged in a staggered mode, the first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3 are further provided with first mounting holes 32 for fixing soil nails 32a, second mounting holes 33 for fixing reverse filtration bags 33a and drain pipes 34, the soil nails 32a penetrate through soil layers through the first mounting holes 32 to be fixed, and the drain pipes 34 are arranged in a slanting mode along the second direction. That is, the supporting structure of the circular top tube well 1 is an assembled structure, the first direction is along the radial direction of the circular top tube well 1, a circular structure can be formed along the circular top tube well 1, and the second direction is vertical to the bottom hole direction of the circular top tube well 1. Referring to fig. 2, several stainless steel wall rings 31 herein include a wall ring (A, B, C, D).

The first stainless steel plate retaining wall 2 is of an inverted L-shaped structure, and the second stainless steel plate retaining wall 3 is of an inverted S shape so as to ensure that the diameter of the circular top tube well 1 is unchanged. Referring to fig. 1, in this embodiment, the inverted L-shaped structure of the first stainless steel retaining wall 2 of the locking notch section is used for supporting on the ground meeting the requirement, and preventing the integral falling of the retaining wall structure; the second stainless steel plate retaining wall 3 of the standard section has an inverse S-shaped structure, so that the working diameter of the round top pipe well 1 is unchanged, and the clearance requirement of a construction process is guaranteed. The first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3 are different in structure, but the same members may be provided for connection.

Specifically, a plurality of stainless steel dado rings 31 are arranged in turn, and a plurality of stainless steel dado rings 31 interconnect encloses into a cylinder structure, corrosion resistant plate 311 is provided with the polylith, corrosion resistant plate 311 includes first steel sheet 311a, second steel sheet 311b, first steel sheet 311a, second steel sheet 311b one end is provided with bell and spigot joint c, first steel sheet 311a, second steel sheet 311b other end is provided with bell and spigot joint d down, first steel sheet 311a go up bell and spigot joint c with second steel sheet 311b down bell and spigot joint d dock each other, until a plurality of corrosion resistant plate 311 dock each other and constitute complete cylinder structure. It should be explained that, referring to fig. 3, the upper bell and spigot c and the lower bell and spigot d are arranged in a non-aligned manner at the end of one end of the stainless steel plate 311, that is, the lower half part of the port is reserved with a flush notch as the upper bell and spigot c, the upper half part of the port is reserved with a flush notch as the lower bell and spigot d, and the notches can be cut along the axis in a flush manner and downward, or can be cut along the axis according to the abutting condition, that is, the upper bell and spigot c and the lower bell and spigot d are in abutting connection.

Preferably, a fastener 5 is disposed between the first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3, and the second stainless steel plate retaining walls 3 are fixedly connected through the fastener 5.

Specifically, the fastener 5 includes a first fastening bolt 51 and a second fastening bolt 52, the first fastening bolt 51 is provided with a first connection groove 51a with a hook-shaped structure, the second fastening bolt 52 is provided with a second connection groove 52a with a reverse hook-shaped structure, the first connection groove 51a and the second connection groove 52a are connected in a reverse hanging manner, and the first connection groove 51a and the second connection groove 52a are provided with a through hole and a screw f, and the screw f passes through the through hole to be fixedly connected. Referring to fig. 4, the first and second connection grooves 51a and 52a are connection portions of the fastener 5 in the shape of hooks.

In this embodiment, after the fastening pieces 5 supported by the second stainless steel retaining walls 3 of the upper and lower molds are connected, the fastening pieces are fixed by the first fastening bolts 51 and the second fastening bolts 52, so that the fastening pieces can be quickly fixed, the second stainless steel retaining walls 3 of the upper and lower molds are avoided, in fig. 1, the second stainless steel retaining walls 3 comprise retaining walls (3 a, 3b and 3 c), in fig. 1, the second stainless steel retaining walls 3a are connected with the third stainless steel retaining walls 3b, and the third stainless steel retaining walls 3b are connected with the third stainless steel retaining walls 3c, so that the connection is not firm. In addition, in this embodiment, the horizontal connection between the second stainless steel plate dado 3 supports of same mould adopts socket connection, can guarantee the continuity of circular structure biography power, can install and dismantle at any time fast second stainless steel plate dado 3 (in fig. 1, 3a, 3b or 3 c), avoid welded fastening's mode, effectively improve the efficiency of construction. The upper stainless steel plate retaining wall and the lower stainless steel plate retaining wall of the assembled supporting structure are fastened and connected through the fastening bolts and the connecting grooves, and welding is not needed. Wherein the number of the second stainless steel plate retaining walls 3 of the standard section can be selected according to practical situations. Specifically, when the design depth is deeper, the number of the second stainless steel plate retaining walls 3 is larger, and the fasteners 5 are larger, so that the structure is firmer and more stable; when the design depth is shallower, the quantity of standard section corrosion resistant plate dado is less, the quantity of fastener 5 is also less, is favorable to quick transportation, and dismantles and installs very convenience moreover.

The hanging ring 313a is fixedly connected to the second azimuth steel pipe 313, and the hanging ring 313a is arranged between the two first azimuth steel pipes 312. A plurality of hanging rings 313a may be provided, in this example, preferably, 3 hanging rings 313a are provided on the second azimuth steel pipe 313; the hanging ring 313a can adopt high-performance smooth steel bars, can rotate up and down, can be conveniently lifted, is also convenient to stack, and is convenient to transport and store; the second azimuth steel pipe 313 enhances the rigidity of the stainless steel wall guard ring 31, and ensures the strength and stability of the support structure.

The two ends of the first square steel pipe 312 are provided with butt joints, the first square steel pipes 312 are mutually connected through the butt joints to form a circular structure, the soil nails 32a penetrate through the first mounting holes 32 to connect the stainless steel plates 311 with the outer wall soil layer of the circular top pipe well 1, and the drain pipes 34 penetrate through the second mounting holes 33 to the outer wall soil layer of the circular top pipe well 1. It should be noted that the diameter of the drain pipe 34 may be determined according to the water inflow amount in the site construction, and the drain pipe 34 may be a Polyethylene (PVC) pipe, a cast iron pipe, a steel-plastic composite pipe, or a galvanized steel pipe, and in this example, the drain pipe 34 has a nominal diameter DN100; after the first stainless steel plate retaining wall 2 or the second stainless steel plate retaining wall 3 is installed, soil nails 32a are arranged in a soil layer for fixation, so that construction safety is ensured; after the first stainless steel panel 2 or the second stainless steel panel 3 is installed, the drain pipe 34 may be installed.

The end part of the drain pipe 34, which is close to the outer wall soil layer side of the circular top pipe well 1, is fixed with a reverse filtering bag 33a, the other end of the drain pipe 34 is provided with geotechnical cloth 33b, the geotechnical cloth 33b wraps the water outlet of the drain pipe 34, and soil nails 32a are staggered and arranged at intervals with the drain pipe 34. The drain pipe 34 is provided with threads, nuts are fixed on the first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3, the drain pipe 34 is connected with the nuts through the threads, and the drain pipe 34 is inclined at an inclination angle of 10-20 degrees along the second direction. The soil nails 32a and the drain pipes 34 are arranged in a staggered manner; that is, the drain pipe 34 may also be a part of the supporting structure, improving the overall stability and saving the construction materials; the geotextile 33b also has the function of a reverse filter bag 33a and plays a role of re-filtering; in this embodiment, the drain pipe 34 is downward provided with an inclination angle of 10 °, which is beneficial to water flow drainage and convenient for installation, disassembly and inspection.

In the embodiment, after the first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3 are installed, the soil nails 32a are arranged in the soil layer to fix, the soil nails 32a can be L-shaped and hung on the first stainless steel plate retaining wall 2 and the second stainless steel plate retaining wall 3 to ensure construction safety.

The cast-in-situ reinforced concrete structure 4 comprises a well wall cast-in-situ section 41 and a bottom plate cast-in-situ section 42, wherein the well wall cast-in-situ section 41 is reserved with holes which can penetrate through the external jacking pipeline 6. The cast-in-situ reinforced concrete structure 4 is of a plate structure, has good overall performance, and can ensure construction safety during jacking of an external jacking pipe.

Based on the connection mode, the connection positions of the wall protection ring parts in the embodiment can be fixed in a threaded or socket connection mode, so that the welding fixation mode is avoided, the wall protection ring can be detached and installed at any time, quick transportation is facilitated, and construction efficiency is improved. Therefore, the stainless steel retaining wall support for the assembled round roof pipe well 1 provided by the embodiment has strong adaptability and wide adjustable range, and is suitable for various embedded depth conditions.

The embodiment also provides a construction method of the stainless steel wall protection support of the assembled round roof pipe well, which is characterized by comprising the following steps:

s1, constructing a supporting area, paying off and positioning;

s2, excavating a foundation pit until the depth is not more than 1.0m, evacuating pit bottom personnel, hoisting a first stainless steel plate retaining wall 2 of a locking notch section, assembling a second stainless steel plate retaining wall 3 of a standard section first die, and installing a water drain hole and soil nails 32a;

s3, continuously excavating a foundation pit, carrying out evacuation, hoisting, assembly, water discharge hole installation and soil nail 32a installation operation once every excavation is not more than 1.0m, and repeating the operations until the section of the cast-in-situ reinforced concrete structure 4;

s4, excavating a foundation pit in a section 4 of the cast-in-situ reinforced concrete structure, lofting and positioning the position of a hole of an external jacking pipeline 6, reserving the position of the hole and making hole reinforcing support, binding reinforced bar support templates, and pouring side wall and bottom plate concrete;

s5, after the strength of the concrete meets the requirement, carrying out jacking operation of the external jacking pipeline 6 and construction of an internal reconstruction well;

s6, backfilling a foundation pit after the construction of the external jacking pipeline 6 is completed, backfilling in layers, compacting in layers, removing a second stainless steel plate retaining wall 3, a drain pipe 34 and soil nails 32a of a mold every backfilling is not more than 1.0m, and then lifting and recycling the second stainless steel plate retaining wall 3 to the ground by utilizing a hanging ring 313a reserved on a second azimuth square steel pipe 313;

s7, restoring the current ground.

For the convenience of readers, a specific example is provided, a city is simulated to be a new d1200 pipeline on a pavement, the burial depth is about 7.0m, no slope-releasing space is arranged around the city, and a land survey report shows that the area is better uniform powdery clay, and the implementation scheme is as follows:

the construction of a support area, paying off and positioning, excavation of a locking notch section to a design depth, installation of a first stainless steel plate retaining wall 2 of the locking notch section, installation of a soil nail 32a and a water drain hole, excavation of a second die of about 1.0m, installation of a second stainless steel plate retaining wall 3 of a standard section, installation of a fastener 5, installation of the soil nail 32a and the water drain hole, repeated excavation and installation to a design elevation, bottom cast-in-situ reinforced concrete structure 4 sections, implementation of an external jacking pipeline 6, implementation of an internal reconstruction well, gradual dismantling of the retaining wall, the water drain pipe 34 and the soil nail 32a, and synchronous backfilling and compaction.

In the construction method for the stainless steel retaining wall support of the assembled round top pipe well 1, the retaining wall support ring and the bolts of the assembled round top pipe well 1 are adopted, so that the transportation and construction are convenient, and the adaptability to the depth and the diameter of a round foundation pit is strong; and adopt bolt or socket connection between the dado, need not the welding, improved the efficiency of construction to a certain extent, be favorable to guaranteeing construction quality, be convenient for transportation and construction, the turnover rate of dado is high, can realize quick installation and dismantlement.

In summary, the utility model provides a construction method of an assembled round roof pipe well stainless steel retaining wall support, which sequentially comprises a locking section stainless steel plate retaining wall, a standard section stainless steel plate retaining wall and a bottom cast-in-situ reinforced concrete section from top to bottom, and the assembled round roof pipe well stainless steel retaining wall support is constructed by excavating and supporting simultaneously. The upper and lower protective walls of the assembled circular top pipe well 1 are fastened and connected by adopting the connecting grooves and the stainless steel bolts, welding is not needed, the construction efficiency is improved to a certain extent, and the construction quality is guaranteed; and the standardized retaining wall ring is convenient to transport and construct, can realize quick installation and disassembly, and the locking notch section retaining wall and the standard section retaining wall are removed one by one for recycling after the construction of the jacking pipe and the internal well chamber is completed, so that the prefabricated steel structure has high turnover rate, and is favorable for saving engineering investment.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The utility model provides a stainless steel dado support of circular top tube well of assembled, its characterized in that includes: the first stainless steel plate retaining wall and the second stainless steel plate retaining wall comprise a plurality of stainless steel retaining rings, the stainless steel retaining rings are provided with stainless steel plates, first square steel pipes and second square steel pipes with hanging rings, the second square steel pipes and the first square steel pipes are arranged in a staggered mode, first mounting holes for fixing soil nails, second mounting holes for fixing reverse filtration bags and drain pipes are further formed in the first stainless steel plate retaining wall and the second stainless steel plate retaining wall, the soil nails penetrate through soil layers to be fixed through the first mounting holes, and the drain pipes are arranged in a slope mode along the second direction.

2. The fabricated circular pipe-jacking well stainless steel retaining wall support of claim 1, wherein the first stainless steel plate retaining wall is arranged in an inverted-L-shaped structure, and the second stainless steel plate retaining wall is inverted-S-shaped to ensure that the diameter of the circular pipe-jacking well is unchanged.

3. The stainless steel wall protection support for the fabricated circular top pipe well according to claim 1, wherein a plurality of stainless steel wall protection rings are sequentially arranged and connected with each other to form a cylindrical structure, a plurality of stainless steel plates are arranged, each stainless steel plate comprises a first steel plate and a second steel plate, an upper bell and spigot is arranged at one end of each of the first steel plate and the second steel plate, a lower bell and spigot is arranged at the other end of each of the first steel plate and the second steel plate, and the upper bell and spigot of each of the first steel plate and the lower bell and spigot of each of the second steel plate are butted with each other until a plurality of stainless steel plates are butted with each other to form a complete cylindrical structure.

4. The stainless steel retaining wall support for the fabricated circular top pipe well according to claim 1, wherein a fastener is arranged between the first stainless steel retaining wall and the second stainless steel retaining wall, and the second stainless steel retaining walls are fixedly connected through the fastener.

5. The stainless steel wall guard support for the fabricated circular top pipe well according to claim 4, wherein the fastener comprises a first fastening bolt and a second fastening bolt, the first fastening bolt is provided with a first connecting groove with a hook-shaped structure, the second fastening bolt is provided with a second connecting groove with an inverted hook-shaped structure, the first connecting groove is connected with the second connecting groove in an inverted hanging manner, and the first connecting groove is provided with a through hole and a screw, and the screw penetrates through the through hole to be fixedly connected.

6. The fabricated round roof tubing well stainless steel retaining wall support of claim 1, wherein said lifting ring is fixedly connected to said second azimuth steel tube and said lifting ring is disposed between two of said first azimuth steel tubes.

7. The stainless steel wall protection support for the fabricated circular top pipe well according to claim 1, wherein opposite connectors are arranged at two ends of the first square steel pipes, the first square steel pipes are mutually connected through the opposite connectors to form a circular structure, the soil nails penetrate through the first mounting holes to connect the stainless steel plates with an outer wall soil layer of the circular top pipe well, and the drain pipe penetrates through the second mounting holes to the outer wall soil layer of the circular top pipe well.

8. The stainless steel retaining wall support of the assembled round roof pipe well according to claim 1, wherein the reverse filter bag is fixed at the end part of the drain pipe close to the outer wall soil layer side of the round roof pipe well, geotechnical cloth is arranged at the other end of the drain pipe, the geotechnical cloth wraps the water outlet of the drain pipe, and soil nails and the drain pipe are arranged at staggered intervals.

9. The stainless steel wall protection support of the fabricated circular top pipe well according to claim 1, wherein threads are arranged on the drain pipe, nuts are fixed on the first stainless steel wall protection and the second stainless steel wall protection, the drain pipe is connected with the nuts through the threads, and the drain pipe is inclined at an inclination angle of 10-20 degrees along the second direction.

10. The stainless steel wall support of the fabricated circular top tube well according to claim 1, wherein the cast-in-situ reinforced concrete structure comprises a well wall cast-in-situ section and a bottom plate cast-in-situ section, and the well wall cast-in-situ section is reserved with holes which can pass through an external jacking pipeline.