Method for manufacturing reinforced concrete shaft wall of large-diameter engineering shaft

Abstract

The invention discloses a large-diameter engineering vertical shaft reinforced concrete shaft wall manufacturing method which comprises the following steps of S1, flange plate machining and blanking preparation and cutting, S2, flange plate field splicing and welding operation, S3, lifting working platform building and debugging, S4, reinforcing steel bar binding through a lifting platform, S5, reinforcing steel bar welding operation and S6, concrete pouring and vibrating operation. Pouring holes are additionally formed in an upper flange plate, concrete is poured in a layered mode, a long-arm vibrating bar is used for vibrating, and the technology is strictly controlled to prevent voids and pitted surfaces; and S7, well wall maintenance and quality acceptance are conducted, specifically, the poured well wall is maintained, the flange plate precision, the well wall appearance and the manufacturing period are accepted, and it is ensured that the engineering requirements are met. The manufacturing time of the single-section well wall is greatly shortened; and voids and pitted surfaces on the surface of the well wall are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine shaft engineering construction, in particular to a large-diameter engineering shaft reinforced concrete shaft wall manufacturing method. BACKGROUND

[0002] The mine shaft is constructed by drilling method, which has the characteristics of long cycle, multiple processes and mutual restriction between processes. The whole construction process has two synchronous work main lines. One main line is drilling and hole forming, and the other main line is prefabricating shaft wall. Before the drilling and hole forming are completed, the shaft wall must be prefabricated and has a certain curing time. Thus, after the drilling and hole forming are completed, the next work link can be smoothly entered, and the shaft wall and back grouting filling are placed.

[0003] The shaft wall prefabrication link is restricted by factors such as construction site, curing time, flange plate processing, concrete supply, weather (construction in winter and rainy season), etc. If the work cannot be completed according to the planned period, the subsequent process will be delayed, and the total construction period will also be extended.

[0004] The shaft wall prefabrication quality is a key factor directly affecting the shaft wall placing quality. In the butt joint process of the upper and lower two sections of shaft wall, the flatness of the flange plates of the upper and lower two sections of shaft wall and the size deviation of the prefabricated shaft wall diameter determine the butt joint quality of the upper and lower two sections of shaft wall, and the shaft wall concrete pouring quality directly affects the final well forming quality acceptance.

[0005] The traditional shaft wall manufacturing method has the following common problems. The flatness deviation of the shaft wall flange plate is too large. In the shaft wall placing, the gap between the flange plates of the upper and lower two sections of shaft wall is too large, and the maximum can even reach 10 cm, which causes the shaft wall butt joint to be difficult and the welding quality to be difficult to control. The diameters of the flange plates on the two sections of shaft wall exist deviation. The local vibration is not dense during the shaft wall concrete pouring process, and the shaft wall surface appears honeycomb and rough surface. The shaft wall manufacturing process is complicated, the auxiliary time is long, the single section of shaft wall manufacturing cycle is long, and other problems.

[0006] The traditional construction method for flange plate processing is that after the raw material steel plate is placed on site, the steel plate is cut down by hand flame cutting according to the design size of the flange plate. The steel plate is locally heated, and deformation is generated before the cut-down steel plate is welded into a shape. The size deviation of the hand-cutting is large, and the deviation in the diameter direction between different flange plates is a common phenomenon. After the flange plate is processed and formed, the error accumulation causes the flatness deviation of the shaft wall flange plate to be large, and the diameters of different sections of shaft wall exist deviation.

[0007] The height of each section of the shaft wall is between 4-6m, and a working platform needs to be erected during the production of the shaft wall, so that workers can bind and weld the upper steel bars. The traditional method is to erect a scaffold, and after the scaffold is erected, the height can only be adjusted by continuing to erect or removing part of it. In order to facilitate the simultaneous operation of workers, the scaffold needs to be repeatedly erected and removed several times during the production of each section of the shaft wall, so that one section of the shaft wall can be completed. The process is complicated and time-consuming.

[0008] The traditional construction method uses a vibrating rod to vibrate through a pouring hole at the top of the shaft wall, and the pouring hole spacing is between 50cm-100cm. The vibrating rod cannot be inserted into each part of the shaft wall, resulting in a large spacing between the vibrating rod vibration positions, which exceeds the influence radius of the vibrating rod, thereby causing local vibration leakage.

[0009] Based on the above technical problems, the present application provides a large-diameter engineering vertical shaft reinforced concrete shaft wall production method. SUMMARY

[0010] The purpose of the present application is to provide a large-diameter engineering vertical shaft reinforced concrete shaft wall production method to solve the problems existing in the prior art.

[0011] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a large-diameter engineering vertical shaft reinforced concrete shaft wall production method, comprising the following steps:

[0012] S1, flange plate blanking preparation and cutting, according to the size of the shaft wall, design the flange plate blanking drawing, cut the raw steel plate with a numerical control machine tool, ensure that the size of the cut part is uniform and the cut is neat;

[0013] S2, on-site assembly and welding of flange plate, hardening treatment of processing site and leveling, assembly of steel plate according to positioning mark, segmented welding to prevent deformation, real-time inspection and correction of flange plate accuracy;

[0014] S3, erection and debugging of liftable working platform, the liftable working platform is erected and debugged by using a combination of stand, bottom connecting rod, waist connecting rod, top connecting rod, movable sleeve, working platform, hook, hand-operated hoist, ladder, guardrail and welding reinforcing plate;

[0015] S4, steel bar binding relying on the lifting platform, binding vertical and horizontal bars in stages by using the platform, fixing vertical bars by working together, and binding horizontal bars by adjusting the platform with the height;

[0016] S5, steel bar welding operation, welding the overlapping parts of the steel bar and the flange plate, strictly controlling the welding time of a single point to be less than or equal to 2 minutes to avoid local overheating and cause deformation of the component;

[0017] S6, concrete pouring and vibrating operation, upper flange plate increases pouring hole, layered pouring concrete, long arm vibrating rod is vibrated, and process is strictly controlled to prevent honeycomb and pitted surface;

[0018] S7, well wall maintenance and quality acceptance, the flange plate accuracy, well wall appearance and production cycle are accepted to ensure that the engineering requirements are met.

[0019] According to the large-diameter engineering vertical shaft reinforced concrete well wall manufacturing method provided by the application, in S1, the specific steps of flange plate processing are:

[0020] S11, according to the construction design standard drawing, the flange plate processing diameter is determined, the blanking drawing is drawn in combination with the size of the raw material steel plate, and the minimum loss of raw material is realized.

[0021] S12, the raw material steel plate is transported to the cutting workshop, and the numerical control machine tool laser cutting process is used for accurate cutting according to the blanking drawing, so that the size error of the single steel plate after cutting is ≤1mm, and the verticality deviation of the cut is ≤0.5mm.

[0022] According to the large-diameter engineering vertical shaft reinforced concrete well wall manufacturing method provided by the application, in S2, the specific steps of flange plate assembly welding are:

[0023] S21, the foundation of the flange plate processing site is tamped and hardened, a flat steel plate with a thickness of ≥20mm is laid on the surface, leveling operation is carried out by using a level, the flatness deviation of the steel plate surface is ensured to be ≤2mm, and then positioning marks are marked on the steel plate according to the flange plate design diameter;

[0024] S22, the cut steel plate is assembled according to the positioning marks, the steel plate is fixed by segmental spot welding first, then full welding operation is carried out, the single welding seam continuous welding time is ≤2min, and the next welding seam is transferred immediately after welding;

[0025] S23, the flatness and diameter of the flange plate are detected by using a dial gauge and a caliper at any time during processing, if deformation is found, flame correction or reassembly is used for treatment.

[0026] According to the large-diameter engineering vertical shaft reinforced concrete well wall manufacturing method provided by the application, in S3, the stand column adopts 6-14 even configurations, a Ф160mm thin-walled steel pipe is selected, and the stand column spacing is ≤2.5m.

[0027] 5. The large-diameter engineering vertical shaft reinforced concrete well wall manufacturing method according to claim 1, wherein in S4, the specific operation process of steel bar binding is:

[0028] S41, after the lower flange plate and the inner formwork are installed in place, the working platform is raised to the upper half position of the shaft wall, personnel on the platform are responsible for vertical rib upright positioning, ground personnel are responsible for vertical rib bottom position calibration, both sides synchronously perform vertical rib spot welding fixation, and all vertical ribs are fixed along the circumferential direction of the shaft wall;

[0029] S42, after the vertical ribs are fixed, the working platform is kept at the upper half position, the lower half horizontal rib of the shaft wall is first bound, when the binding height reaches 1.2 m, the working platform is lowered to the corresponding height, the horizontal rib is continuously bound upwards, the platform position is adjusted synchronously with the binding height, and all horizontal ribs are bound.

[0030] According to the large-diameter engineering vertical shaft reinforced concrete shaft wall manufacturing method provided by the application, in S5, when the steel bars are welded, manual arc welding is adopted for the welding operation of the overlapping part of the steel bar and the flange plate, the welding time of a single point is strictly controlled to be less than 2 min, the welding is immediately transferred to the next welding point after being completed, and the distance between adjacent welding points is greater than or equal to 200 mm, so that the local temperature is prevented from exceeding 300 DEG C to cause thermal expansion deformation of the flange plate or the steel bar.

[0031] According to the large-diameter engineering vertical shaft reinforced concrete shaft wall manufacturing method provided by the application, in S6, the specific process of concrete pouring and vibrating is as follows:

[0032] S61, the upper flange plate is reserved with a concrete pouring hole and a hook installation hole, 0.5-1.0 m 3 The cement mortar with the same strength grade is uniformly laid on the bottom of the shaft wall.

[0033] S62, the concrete is poured by using a car-lift hopper or a concrete delivery pump, the concrete is poured in layers, a long-arm vibrating rod is selected for vibrating, the vibrating rod is inserted into the surface of the lower flange plate through the pouring hole during the first time of vibrating, and each point is vibrated for 15-20 s;

[0034] S63, when the next layer of concrete is poured, the vibrating rod is inserted into the depth of the previous layer of concrete by greater than or equal to 150 mm, the vibrating rod is obliquely vibrated when the pouring reaches the top surface of the shaft wall, until the mortar seeps out from the corners of the upper flange plate, a troweling machine is immediately used for surface smoothing and leveling after the pouring is completed, the top surface of the concrete is controlled to be lower than the top surface of the flange plate by 10±2 mm, and the residual concrete on the surface of the flange plate is cleaned in time.

[0035] According to the large-diameter engineering vertical shaft reinforced concrete shaft wall manufacturing method provided by the application, in S7, the concrete is maintained by using a covered geotextile and water spraying within 12 h after the pouring is completed, the maintenance time is greater than or equal to 14 d, the concrete strength reaches 100% of the design strength, the flange plate flatness deviation is less than 5 mm, the diameter deviation of flange plates of adjacent two shaft walls is less than or equal to 2 mm, the shaft wall butt joint gap is controlled to be 20-50 mm, the shaft wall surface honeycomb area is less than or equal to 0.5%, and there is no bubble with a depth greater than 5 mm.

[0036] The present application discloses the following technical effects:

[0037] The present application guarantees the size uniformity of key components through high-precision cutting process, combines welding deformation control and real-time precision correction, effectively reduces the error in the process of component machining and assembly, ensures the assembly fit degree of each component of the well wall, and lays a foundation for subsequent construction and overall stability of the well wall.

[0038] The application of the liftable working platform adapts to the construction scene of large-diameter vertical shaft, provides flexible and stable operation space for steel bar binding, welding and other operations of different heights, realizes phased and orderly connection of each process, reduces the coordination obstacles of up and down operations, improves the overall construction progress, and shortens the production cycle.

[0039] Through the control of welding time, the deformation of the component caused by local overheating is avoided, combined with the concrete construction process of layered pouring and targeted vibration, the steel bar connection defects and quality problems such as concrete honeycomb and pitted surface are reduced, the integrity of the steel bar and the flange plate, the concrete structure is enhanced, and the bearing capacity and durability of the well wall are improved.

[0040] The present application forms a whole-process quality closed loop from construction to finished product through perfect maintenance process and multi-dimensional acceptance standards covering precision, appearance and cycle, ensures that the final product not only meets the structural performance requirements of engineering design, but also adapts to the actual needs of engineering in construction cycle, appearance quality and other aspects. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0042] Figure 1 It is a flange cutting and splicing schematic diagram of the present application;

[0043] Figure 2 It is a flange processing site schematic diagram of the present application;

[0044] Figure 3 It is a structure schematic diagram of the liftable working platform of the present application;

[0045] Figure 4 It is a well wall flange reserved pouring hole position schematic diagram. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0047] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0048] With reference to Figures 1-4 The present application provides a large-diameter engineering shaft reinforced concrete shaft lining manufacturing method, comprising the following steps:

[0049] S1, flange plate processing blanking preparation and cutting, designing flange plate blanking drawing according to shaft lining size, cutting original steel plate with numerical control machine tool laser, ensuring uniform size and neat cut of cut parts;

[0050] S2, flange plate on-site assembly and welding operation, hardening treatment processing site and leveling, assembling steel plate according to positioning mark, segmental welding deformation prevention, and real-time checking and correcting flange plate precision;

[0051] S3, building and debugging of liftable working platform, adopting column, bottom connecting rod, waist connecting rod, top connecting rod, movable sleeve, working platform, hook, hand-operated hoist, ladder, guardrail, and welding reinforcing plate combination to build liftable working platform;

[0052] S4, steel bar binding relying on lifting platform, utilizing platform to bind vertical and horizontal bars in stages, fixing vertical bars through up and down cooperation, and binding horizontal bars by adjusting platform with height;

[0053] S5, steel bar welding operation, welding steel bar and flange plate lap joint part, strictly controlling single-point welding time ≤2 min to avoid local overheating leading to component deformation;

[0054] S6, concrete pouring and vibrating operation, increasing pouring hole on flange plate, pouring concrete in layers, vibrating with long-arm vibrating rod, and strictly controlling process to prevent honeycomb and rough surface;

[0055] S7, shaft lining maintenance and quality acceptance, maintaining shaft lining after pouring, accepting flange plate precision, shaft lining appearance and manufacturing period, and ensuring to meet engineering requirements.

[0056] Further optimization scheme, in S1, the specific steps of flange plate processing are:

[0057] S11, according to the construction design standard drawing, the flange plate processing diameter is determined, the blanking drawing is drawn combining the original material steel plate size, and the minimum loss of raw materials is realized;

[0058] S12, the original material steel plate is transported to the cutting workshop, and the numerical control machine tool laser cutting process is used for accurate cutting according to the blanking drawing, so that the size error of a single steel plate after cutting is less than or equal to 1mm, and the perpendicularity deviation of the cut is less than or equal to 0.5mm.

[0059] Further optimization scheme, in S2, the specific steps of flange plate assembly welding are:

[0060] S21, the foundation of the flange plate processing site is rammed and hardened, the surface is paved with flat steel plates with a thickness of more than or equal to 20mm, leveling work is carried out by using a level, the flatness deviation of the steel plate surface is less than or equal to 2mm, and then the positioning mark is marked on the steel plate according to the design diameter of the flange plate;

[0061] S22, the cut steel plate is assembled into a shape according to the positioning mark, the steel plate is fixed by point welding in sections first, and then full welding work is carried out, the continuous welding time of a single weld is less than or equal to 2 minutes, and the steel plate is immediately transferred to the next weld after welding;

[0062] S23, during the processing, the flatness and diameter of the flange plate are detected by using a dial gauge and a caliper at any time, and if deformation is found, the deformation is immediately treated by using a flame correction or reassembling method.

[0063] Further optimization scheme, in S3, the stand column adopts 6-14 even configurations, a Ф160mm thin-walled steel pipe is selected, and the stand column spacing is less than or equal to 2.5m.

[0064] 5. The method for manufacturing a large-diameter engineering vertical shaft reinforced concrete shaft lining according to claim 1, characterized in that, in S4, the specific operation process of steel binding is:

[0065] S41, after the flange plate and the inner formwork are installed in place, the working platform is raised to the upper half position of the shaft lining, the personnel on the platform are responsible for the vertical reinforcement positioning, the ground personnel are responsible for the vertical reinforcement bottom position calibration, and the two parties simultaneously carry out vertical reinforcement point welding fixation, and all vertical reinforcements are fixed along the circumferential direction of the shaft lining;

[0066] S42, after the vertical reinforcement is fixed, the working platform is kept at the upper half position, the lower half horizontal reinforcement of the shaft lining is bound first, when the binding height reaches 1.2m, the working platform is lowered to the corresponding height, the horizontal reinforcement is continuously bound upwards, the platform position is adjusted synchronously with the binding height, and all horizontal reinforcements are bound.

[0067] Further optimization scheme, in S5, when the reinforcing steel is welded, the welding operation adopts manual arc welding for the overlapping part of the reinforcing steel and the flange plate, the welding time of a single point is strictly controlled within 2 min, and the welding is immediately transferred to the next welding point after the welding is completed, the distance between adjacent welding points is greater than or equal to 200 mm, so as to avoid that the local temperature exceeds 300 DEG C and causes thermal expansion deformation of the flange plate or the reinforcing steel.

[0068] Further optimization scheme, in S6, the specific process of concrete pouring and vibrating is as follows:

[0069] S61, the upper flange plate is reserved with a concrete pouring hole and a lifting hook mounting hole, 0.5-1.0 m 3 The cement mortar with the same strength grade is uniformly laid on the bottom of the shaft wall.

[0070] S62, the automobile lifting hopper or the concrete delivery pump is used for pouring, the concrete is poured in layers, the long-arm vibrating rod is selected for vibrating, the vibrating rod is inserted into the surface of the lower flange plate to a depth of greater than or equal to 150 mm during the first vibrating, and each point is vibrated for 15-20 s;

[0071] S63, when the next layer of concrete is poured, the vibrating rod is inserted into the previous layer of concrete to a depth of greater than or equal to 150 mm, when the pouring is completed to the top surface of the shaft wall, the vibrating rod is obliquely vibrated until the mortar seeps out of the corners of the upper flange plate, and the surface is immediately leveled and smoothed by using a troweling machine after the pouring is completed, so that the top surface of the concrete is controlled to be lower than the top surface of the flange plate by 10±2 mm, and the residual concrete on the surface of the flange plate is cleaned in time.

[0072] Further optimization scheme, in S7, the concrete is covered with geotextile and watered for maintenance within 12 hours after the pouring is completed, the maintenance time is greater than or equal to 14 days, the concrete strength reaches 100% of the design strength, the flatness deviation of the flange plate is less than 5 mm, the diameter deviation of the flange plates of adjacent shaft walls is less than or equal to 2 mm, the gap of the shaft wall butt joint is controlled to be 20-50 mm, the surface honeycomb area of the shaft wall is less than or equal to 0.5%, and there is no bubble with a depth greater than 5 mm.

[0073] Test example:

[0074] The patent has good effects through the application in the vertical shaft project of a certain iron mine in Changli.

[0075]

[0076] In the description of the present application, it needs to be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0077] The above-described embodiments are only to describe the preferred modes of the present application, and not to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A method of constructing a large diameter engineering shaft reinforced concrete lining, characterized in that, The method comprises the following steps: S1, flange plate processing blanking preparation and cutting, according to the size of the well wall, the flange plate blanking drawing is designed, the raw steel plate is cut by numerical control machine tool laser cutting process, and the size of the cut part is uniform and the cut is neat; S2, on-site assembly and welding of flange plate, hardening treatment of processing site and leveling, assembly of steel plate according to positioning mark, segmented welding to prevent deformation, real-time inspection and correction of flange plate precision; S3, build and debug the lifting work platform, use column, bottom connecting rod, waist connecting rod, top connecting rod, movable sleeve, work platform, hook, hand chain block, ladder, guardrail, welding reinforcement plate combination to build the lifting work platform; S4, rely on the lifting platform to bind the reinforcement, use the platform to bind the vertical and horizontal reinforcement in stages, fix the vertical reinforcement, adjust the platform to bind the horizontal reinforcement; S5, reinforcement welding operation, weld the reinforcement and the lap joint part of the flange plate, strictly control the welding time of single point ≤2min to avoid local overheating and cause deformation of the component; S6, concrete pouring and vibrating operation, increase pouring hole on the flange plate, pour concrete in layers, use long arm vibrating rod to vibrate, strictly control the process to prevent honeycomb and rough surface; S7, well wall maintenance and quality acceptance, maintain the poured well wall, check the flange plate precision, well wall appearance and production cycle to ensure that it meets the engineering requirements.

2. The method for manufacturing a large-diameter engineering shaft reinforced concrete shaft lining according to claim 1, characterized by, In S1, the specific steps of flange plate processing are: S11, according to the construction design standard drawing, determine the flange plate processing diameter, draw the blanking drawing combined with the size of the raw steel plate to minimize the loss of raw materials; S12, transfer the raw steel plate to the cutting workshop, use numerical control machine tool laser cutting process to accurately cut according to the blanking drawing, ensure that the size error of single steel plate after cutting is ≤1mm and the perpendicularity deviation of the cut is ≤0.5mm.

3. The method of claim 1, wherein the method further comprises: In S2, the specific steps of flange plate assembly and welding are: S21, compact and harden the foundation of the flange plate processing site, lay a flat steel plate with a thickness of ≥20mm on the surface, use a level to level the surface, ensure that the flatness deviation of the steel plate surface is ≤2mm, then mark the positioning mark on the steel plate according to the flange plate design diameter; S22, assemble the cut steel plate into a shape according to the positioning mark, first fix the steel plate by segmental spot welding, then perform full welding operation, the continuous welding time of single weld is ≤2min, immediately transfer to the next weld after welding; S23, use dial gauge and caliper to detect the flatness and diameter of the flange plate at any time during processing, if deformation is found, immediately use flame correction or reassemble to handle.

4. The method for manufacturing a large-diameter engineering shaft reinforced concrete shaft lining according to claim 1, characterized by, In S3, the column is configured with 6-14 even numbers, Ф160mm thin-walled steel pipe is selected, and the column spacing is ≤2.5m.

5. The method of claim 1, wherein the method further comprises: In S4, the specific operation process of reinforcement binding is: S41, after the lower flange plate and inner formwork are installed in place, the work platform is raised to the upper half position of the well wall, the personnel on the platform are responsible for the vertical reinforcement positioning, the ground personnel are responsible for the vertical reinforcement bottom position calibration, both sides synchronize vertical reinforcement spot welding, and all vertical reinforcements are fixed along the circumference of the well wall; S42, after the vertical rib is fixed, the working platform is kept in the upper half position, the lower half horizontal rib of the shaft wall is first bound, when the binding height reaches 1.2 m, the working platform is lowered to the corresponding height, the horizontal rib is continuously bound upwards, the platform position is adjusted synchronously with the binding height, and all the horizontal ribs are bound until the binding is completed.

6. The method of claim 1, wherein the method further comprises: In S5, when the steel bars are welded, the welding operation is performed on the overlapping part of the steel bars and the flange plate by using manual arc welding, the welding time of a single point is strictly controlled within 2 min, the welding is immediately transferred to the next welding point after the welding is completed, the distance between adjacent welding points is greater than or equal to 200 mm, and local temperature exceeding 300 DEG C is avoided to cause thermal expansion deformation of the flange plate or the steel bars.

7. The method of claim 1, wherein the method further comprises: In S6, the specific process of concrete pouring and vibrating is as follows: S61, the upper flange reserved concrete pouring hole and hook mounting hole, pouring before pouring 0.5-1.0m 3 The cement mortar of the same intensity grade is evenly laid on the bottom of the well wall; S62, the automobile crane lifting hopper or the concrete delivery pump is used for pouring, the concrete is poured in layers, the long-arm vibrating rod is selected for vibrating, the vibrating rod is inserted to the surface of the lower flange plate through the pouring hole during the first time of vibrating, and each point is vibrated for 15-20 s; S63, when the next layer of concrete is poured, the vibrating rod is inserted into the concrete of the previous layer by more than or equal to 150 mm, the vibrating rod is obliquely vibrated when the pouring is performed to the top surface of the shaft wall, until the mortar seeps out of the corner of the upper flange plate; after the pouring is completed, the surface is immediately smoothed by using the smoothing machine to find the plane, the top surface of the concrete is controlled to be lower than the top surface of the flange plate by 10±2 mm, and the residual concrete on the surface of the flange plate is cleaned in time.

8. The method of claim 1, wherein the method further comprises: In S7, the concrete is poured, and the geotextile is covered and watered for maintenance within 12 h after the pouring is completed, the maintenance time is greater than or equal to 14 d, the concrete strength reaches 100% of the design strength, the flatness deviation of the flange plate is less than 5 mm, the diameter deviation of the flange plates of adjacent two shaft wall sections is less than or equal to 2 mm, the joint gap of the shaft wall is controlled to be 20-50 mm, the surface honeycomb area of the shaft wall is less than or equal to 0.5%, and there is no bubble with a depth greater than 5 mm.

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