Ultra-deep segmental sinking large-diameter working well template system and construction method

Abstract

The present application relates to a kind of ultra-deep segment type sinking large-diameter working well template system and construction method, including adjustable arc-shaped template, embedded iron piece welded steel corbel cantilever type operating platform, outside landing fastener type scaffold and inside hanging safety protection platform.The beneficial effects of the present application are: using adjustable arc-shaped template, through the arching back fillet and screw rod, realize the quick construction of template arching;Inside of sinking well segment uses embedded iron piece welded steel corbel cantilever type operating platform, vertical rod positioning cylinder and fixed steel bar realize the quick installation of cantilever operating platform;Outside of sinking well segment uses arc-shaped steel plate with vertical rod limiting groove, improve the construction efficiency of outside scaffold;Hoisting mechanism is installed on the outside of sinking well segment, through walking mechanism and standardized support realize the hanging of inside safety protection platform, ensure the safety of construction personnel and improve construction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of underground construction, and in particular relates to a formwork system and construction method for an ultra-deep segmental sinking large-diameter working well. Background Technology

[0002] With the expansion of urban areas and the upgrading of water supply and drainage systems, various municipal structures are layered underground. Faced with an increasing number of above-ground and underground structures, pipelines are buried at greater depths, increasing excavation and installation costs. Pipe jacking has emerged as a solution. Pipe jacking technology is a construction method that uses the jacking force generated by equipment such as main jacking cylinders, correction cylinders, and repeaters within a pre-excavated working channel to overcome the friction between the pipe section and the surrounding soil, thus pushing the pipeline into the ground.

[0003] As the jacking equipment and burial depth increase, the size of the working shaft providing reaction support also gradually increases. However, the construction of such large-sized caissons often presents significant challenges in terms of construction difficulty and schedule. In particular, there are numerous difficulties in the installation of curved formwork, the erection of the operating platform inside the shaft, the installation of scaffolding outside the shaft, and the management of personnel working inside the shaft.

[0004] Therefore, for the problems existing in the construction of ultra-deep segmental sinking large-diameter working wells, there is an urgent need for a complete set of construction methods that can improve the construction efficiency and quality of working wells while ensuring the safety of construction personnel. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an ultra-deep segmental sinking large-diameter working well template system and construction method.

[0006] This ultra-deep segmental sinking large-diameter working well template system includes an adjustable arc template, a pre-embedded iron welded steel bracket cantilevered operating platform, an outer ground-mounted fastener scaffold, and an inner suspended safety protection platform;

[0007] The adjustable curved template includes an inner template arc-starting system and an outer template arc-starting system. Both the inner and outer template arc-starting systems include vertical back ribs, wooden templates, and long screws. Steel plates are welded between the vertical back ribs, and the long screws pass through the steel plates to support or stretch the wooden templates.

[0008] The pre-embedded iron parts welded steel bracket cantilevered operating platform includes channel steel. The channel steel is set in the first section of the caisson through the pre-embedded parts of the caisson. The internal scaffolding is fixed on the channel steel by the vertical rod positioning cylinder.

[0009] The outer ground-mounted coupler-type scaffolding includes the outer scaffolding and the curved steel plate. The curved steel plate is spliced ​​together and surrounds the outside of the caisson. The outer scaffolding is erected on the curved steel plate through the vertical rod limiting groove.

[0010] The inner suspended safety protection platform includes an operating platform and a lifting mechanism. The lifting mechanism is located on the outside of the caisson and includes a slide rail and a traveling mechanism. The traveling mechanism moves along the slide rail, and the operating platform is suspended on the inside of the caisson by steel wire ropes below the traveling mechanism.

[0011] Preferably, the outer template arc-forming system includes vertical back ribs, horizontal back ribs, and wooden templates. A steel plate is welded between two adjacent vertical back ribs, and a set of pre-drilled screw holes is provided on the steel plate. Long screws are provided between the vertical back ribs, and the long screws are tightened by nuts. The wooden templates are spliced ​​and fixed by short screws and nuts. The inner template arc-forming system includes vertical back ribs, wooden templates, and inner template arc-forming back ribs. A steel plate is welded between two adjacent vertical back ribs, and three sets of pre-drilled screw holes are provided on the horizontal surface of the steel plate. Long screws penetrate the steel plate, and the bottom of the long screws supports the wooden templates through the inner template arc-forming back ribs.

[0012] As a preferred option: the pre-embedded iron component welded steel bracket cantilever operating platform includes a caisson pre-embedded component, channel steel and diagonal bracing. The caisson pre-embedded component is located in the first section of the caisson. The channel steel is equipped with pipe clamps, fixing steel bars and vertical rod positioning cylinders. The vertical rod positioning cylinders are fitted with vertical rods of the inner scaffold and are locked by bolts and pipe clamps. The fixing steel bars are equipped with pipe clamp holes and pipe clamp slots for bolt locking.

[0013] As a preferred option: a concrete base plate is provided on the soil surface outside the first section of the caisson. The outer ground-mounted fastener scaffolding includes an outer scaffolding and an arc-shaped steel plate. The arc-shaped steel plate is located outside the template and has vertical rod limiting grooves. Corner braces are welded around the vertical rod limiting grooves. The vertical rods of the outer scaffolding are inserted into the vertical rod limiting grooves and fixed by through bolts and butt couplers. The arc-shaped steel plate has fixing screw holes, and adjacent arc-shaped steel plates are spliced ​​together into a whole by large screws and nuts.

[0014] Preferably, the inner suspended safety protection platform includes an operating platform and a lifting mechanism. The lifting mechanism includes a slab foundation, a control host, an internal support frame, a lifting boom, a counterweight, a slide rail, a slewing bearing, a slewing mechanism, and a traveling mechanism. A standardized support frame is installed below the traveling mechanism, and the operating platform is suspended inside the caisson by steel wire ropes. The traveling mechanism of the inner suspended safety protection platform consists of pulleys, and the traveling mechanism moves along the slide rail via two sets of upper and lower pulleys. A motor is installed on the traveling mechanism.

[0015] The construction method for this ultra-deep segmental sinking large-diameter working well template system includes the following steps:

[0016] Step 1: Erect scaffolding, tie the reinforcing bars of the first section of the caisson, set the embedded parts of the caisson, install the adjustable arc formwork system and start the arc of the wooden formwork on the inner and outer sides of the caisson; remove the adjustable formwork system after pouring the first section of the caisson.

[0017] Step 2: Lower the first section of the caisson to the predetermined position, remove the soil in the pit, hoist the operating platform using a crane, erect a cantilevered operating platform with welded steel brackets at the pre-embedded parts of the caisson, and install the internal scaffolding.

[0018] Step 3: Splice arc-shaped steel plates on the outside of the first section of the caisson to form an integral ring-shaped steel plate on the outside of the caisson;

[0019] Step 4: Install the external scaffolding in layers above the overall ring-shaped steel plate on the outside of the caisson; install the connecting steel pipes between the top of the internal and external scaffolding.

[0020] Step 5: Install and assemble the precast segments of the standard segment caisson to form a complete standard segment caisson;

[0021] Step 6: Repeat steps 2 and 5 to sink the existing caisson and construct new standard segment caissons, repeating this process until the caisson construction is completed.

[0022] As a preferred option, in step two: weld diagonal braces and channel steel at the embedded parts of the caisson, insert vertical rods into the vertical positioning cylinder, tighten the bolts on the fixing steel bars, erect a cantilevered operating platform with welded steel brackets for the embedded iron parts, and then install internal scaffolding on the cantilevered operating platform with welded steel brackets for the embedded iron parts.

[0023] As a preferred option, in step three: an arc-shaped steel plate is installed on the concrete base plate on the outside of the first section of the caisson. When two adjacent arc-shaped steel plates are respectively the first arc-shaped template and the second arc-shaped steel plate, the first arc-shaped template and the second arc-shaped steel plate are spliced ​​together by large screws and large nuts to form an integral ring-shaped steel plate on the outside of the caisson; the large screws are pre-embedded in the concrete base plate.

[0024] As a preferred option, in step four: first, insert the vertical pole into the vertical pole limiting groove, then lock the through bolt, and install the connecting fastener to fix the vertical pole on the curved steel plate, and then continue to install the external scaffolding; the external scaffolding includes a first layer of scaffolding and a second layer of scaffolding, and ground embedded parts are provided on the bottom surface outside the caisson; the first layer of scaffolding is connected to the caisson embedded parts of the first section of the caisson by diagonal bracing steel pipes, and the second layer of scaffolding is connected to the ground embedded parts by diagonal bracing steel pipes; connecting steel pipes for the inner and outer scaffolding are installed between the top of the inner and outer scaffolding.

[0025] The beneficial effects of this invention are:

[0026] 1) Adjustable arc-shaped formwork construction technology can effectively improve the speed of installation of wooden formwork on the inner and outer sides of the caisson and the arc-starting construction, while ensuring the smoothness of the overall line of the working well formwork, effectively improving construction quality and efficiency.

[0027] 2) The pre-embedded iron parts welded steel bracket cantilever operating platform technology uses channel steel with fixed steel bars and vertical positioning cylinders welded to the pre-embedded parts of the caisson. This effectively improves the efficiency of cantilever operating platform and internal scaffolding construction and ensures the overall stability of the internal scaffolding.

[0028] 3) The external ground-mounted coupler-type scaffolding installation technology uses arc-shaped steel plates with vertical bar limiting grooves to splice into an integral ring steel plate, which effectively improves the installation efficiency of the on-site scaffolding. The internal and external scaffolding are connected into a whole by connecting steel pipes, which improves the stability of the internal and external scaffolding.

[0029] 4) The internal suspended safety protection platform technology involves setting up a lifting mechanism outside the well and suspending the operating platform through standardized brackets, which enables construction personnel to carry out safe construction inside the well, improves construction efficiency, and ensures the safety of construction personnel.

[0030] 5) This construction method can improve the construction efficiency and quality of ultra-deep segmental sinking of large-diameter working wells, and ensure the safety of construction personnel. It has good economic and social benefits and can be further promoted and applied. Attached Figure Description

[0031] Figure 1 Elevation view of the adjustable curved template on the outside;

[0032] Figure 2 Elevation view of adjustable curved template on the inside

[0033] Figure 3 Schematic diagram of the adjustable outer arc-shaped template system structure;

[0034] Figure 4 Schematic diagram of the adjustable inner arc-shaped template system structure;

[0035] Figure 5 Image showing the arc effect of the adjustable outer curved template;

[0036] Figure 6 Image showing the arc effect of the adjustable inner curved template;

[0037] Figure 7 Schematic diagram of a cantilevered operating platform with pre-embedded iron components and welded steel brackets;

[0038] Figure 8 Schematic diagram of the connection point of the vertical bar channel steel;

[0039] Figure 9 Schematic diagram of the fixed steel bar structure;

[0040] Figure 10 Schematic diagram of an arc-shaped steel plate structure;

[0041] Figure 11Schematic diagram of the arc-shaped steel plate splicing structure;

[0042] Figure 12 Schematic diagram of the connection structure between the vertical rod and the curved steel plate;

[0043] Figure 13 Schematic diagram of the inner suspended safety protection platform structure;

[0044] Figure 14 A schematic diagram of the walking structure.

[0045] Explanation of reference numerals in the attached drawings: 1 Vertical back brace, 2 Horizontal back brace, 3 Steel plate, 4 Long screw rod, 5 Nut, 6 Short screw rod, 7 Wooden formwork, 8 Pre-drilled screw hole, 9 Outer formwork curved back brace, 10 Inner formwork curved back brace, 11 External scaffolding, 12 Diagonal bracing steel pipe, 13 Ground embedded part, 14 Caisson embedded part, 15 First section caisson, 16 Inner scaffolding, 17 Standard section caisson, 18 Diagonal brace, 19 Channel steel, 20 Connecting steel pipe between inner and outer scaffolding, 21 Vertical rod, 22 Pipe clamp, 23 Bolt, 24 Fixing steel bar, 25 Vertical rod positioning cylinder, 26 Pipe clamp hole, 27 Pipe clamp groove, 29 Curved steel plate, 30 Fixing screw hole, 31 Vertical rod limiting groove, 32 First curved steel plate, 33 Second curved steel plate, 34 35 Large nut, 36 Large screw rod, 37 Concrete base plate, 38 Butt coupler, 39 Through bolt, 40 Angle brace, 41 Plate foundation, 42 Control host, 43 Internal support frame, 44 Lifting boom, 45 Counterweight, 46 Slewing bearing, 47 Slewing mechanism, 48 Traveling mechanism, 49 Standardized bracket, 50 Wire rope, 51 Operating platform, 52 Motor, 53 Pulley, 54 Fixed pulley, 55 Slewing rail connecting rod. Detailed Implementation

[0046] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0047] Example 1

[0048] As one example, such as Figures 1 to 14 As shown, this ultra-deep segmental sinking large-diameter working well template system includes an adjustable arc template, a pre-embedded iron welded steel bracket cantilevered operating platform, an outer ground-mounted fastener scaffold, and an inner suspended safety protection platform.

[0049] like Figures 1 to 6As shown, the adjustable arc template includes an inner template arc-forming system and an outer template arc-forming system. The outer template arc-forming system includes vertical back ribs 1, horizontal back ribs 2, and wooden templates 7. A steel plate 3 is welded between two adjacent vertical back ribs 1. A set of pre-drilled screw holes 8 are provided on the steel plate 3. Long screws 4 are provided between the vertical back ribs 1. The long screws 4 are tightened by nuts 5. The wooden templates 7 are spliced ​​and fixed by short screws 6 and nuts 5. The inner template arc-forming system includes vertical back ribs 1, wooden templates 7, and inner template arc-forming back ribs 10. A steel plate 3 is welded between two adjacent vertical back ribs 1. Three sets of pre-drilled screw holes 8 are provided on the horizontal surface of the steel plate 3. The long screws 4 can be directly screwed into the steel plate 3. The bottom of the long screws 4 supports the wooden templates 7 through the inner template arc-forming back ribs 10 to form an arc.

[0050] like Figures 7 to 9 As shown, the pre-embedded iron welded steel bracket cantilevered operating platform includes a caisson pre-embedded part 14, a channel steel 19, and a diagonal brace 18. The caisson pre-embedded part 14 is located inside the first section of the caisson 15. The channel steel 19 is equipped with pipe clamps 22, fixing steel bars 24, and vertical rod positioning cylinders 25. Vertical rods 21 of the inner scaffolding 16 are inserted into the vertical rod positioning cylinders 25. The vertical rod positioning cylinders 25 are secured by bolts 23 and pipe clamps 22. The fixing steel bars 24 are equipped with pipe clamp openings 26 and pipe clamp slots 27 for bolt 23 securing. The channel steel 19 is located inside the first section of the caisson 15 through the caisson pre-embedded part 14, and the inner scaffolding 16 is fixed on the channel steel 19 by the vertical rod positioning cylinders 25.

[0051] like Figure 7 , Figures 10 to 12 As shown, a concrete base plate 36 is provided on the outer surface of the soil of the first section of the caisson 15. The outer ground-mounted fastener scaffolding includes an outer scaffolding 11 and an arc-shaped steel plate 29. The arc-shaped steel plate 29 is located on the outside of the template. A vertical rod limiting groove 31 is provided on the arc-shaped steel plate 29. Angle braces 39 are welded around the vertical rod limiting groove 31. The vertical rods 21 of the outer scaffolding 11 are inserted into the vertical rod limiting groove 31 and fixed by through bolts 38 and butt couplers 37. The arc-shaped steel plate 29 is provided with fixing screw holes 30. Adjacent arc-shaped steel plates 29 are spliced ​​together into a whole by large screws 35 and nuts 34, surrounding the outside of the caisson.

[0052] like Figure 13 and Figure 14As shown, the inner suspended safety protection platform includes an operating platform 51 and a lifting mechanism. The lifting mechanism includes a slab foundation 40, a control host 41, an inner support bracket 42, a lifting arm 43, a counterweight block 44, a slide rail 45, a slewing bearing 46, a slewing mechanism 47, and a traveling mechanism 48. A standardized support bracket 49 is installed below the traveling mechanism 48, and the operating platform 51 is suspended inside the caisson by steel wire ropes 50. The traveling mechanism 48 of the inner suspended safety protection platform consists of pulleys 53, and the traveling mechanism 48 moves along the slide rail 45 through two sets of upper and lower pulleys 53. A motor 52 is installed on the traveling mechanism 48.

[0053] Example 2

[0054] As another embodiment, the construction method of the ultra-deep segmental sinking large-diameter working well template system in Embodiment 1 includes the following steps:

[0055] Step 1: Level the site, carry out appropriate foundation treatment, excavate intercepting ditches and collection wells, then excavate the foundation pit and construct the subbase.

[0056] Scaffolding was erected, the first section of the caisson was reinforced with 15 steel bars, caisson embedded parts 14 were installed, and the adjustable curved formwork system was installed. The inner formwork system is curved by screwing in long threaded rods 4; to curve, simply screw the long threaded rods 4 to the predetermined position. The outer formwork system is curved by tightening nuts 5, similarly screwing them in to the predetermined length.

[0057] The first section of the caisson was poured with concrete, and the adjustable formwork system was removed after the concrete reached its strength.

[0058] Step 2: After the first section of the caisson is constructed, the first section of the caisson 15 is lowered to the predetermined position using the pressurization device around the caisson. The soil in the pit is removed, and the inner hanging safety protection platform is installed. A lifting mechanism is installed on the slab foundation 40, and the operating platform 51 is hoisted for construction inside the caisson. Diagonal braces 18 and channel steel 19 are welded at the embedded parts 14 of the caisson. The vertical rod 21 is inserted into the vertical positioning cylinder 25, and the bolts 23 on the fixing steel bar 24 are tightened. The embedded iron parts are welded to the steel bracket cantilevered operating platform, and the inner scaffolding 16 is installed.

[0059] Step 3: Install the arc-shaped steel plate 29 at the predetermined position on the concrete base plate 36 on the outer side of the first section of the caisson. The first arc-shaped template 32 and the second arc-shaped steel plate 33 are spliced ​​together by the pre-embedded large screws 35 and large nuts 34 to form an integral ring-shaped steel plate on the outer side of the caisson.

[0060] Step 4: Install the outer ground-mounted coupler-type scaffolding. First, insert the vertical pole 21 into the vertical pole limiting groove 31, then lock the through bolt 38, and install the connecting coupler to firmly fix the vertical pole 21 on the arc-shaped steel plate 29. Then continue to install the outer scaffolding 11. The outer scaffolding 11 includes a first layer of scaffolding and a second layer of scaffolding. Ground embedded parts 13 are provided on the bottom surface outside the caisson. The first layer of scaffolding is connected to the caisson embedded parts 14 of the first section of the caisson by diagonal bracing steel pipes 12. The second layer of scaffolding is connected to the ground embedded parts 13 by diagonal bracing steel pipes 12. After the inner scaffolding 16 and the outer scaffolding 11 are installed, the inner and outer scaffolding connecting steel pipes 20 are installed between the top of the inner scaffolding 16 and the outer scaffolding 11 to form an integral whole.

[0061] Step 5: Then install the precast segments of standard segment caisson 17, splice the precast segments of standard segment caisson 17 to form a complete standard segment caisson 17.

[0062] Step 6: Repeat steps 2 and 5 to sink the existing caisson and construct a new standard segment caisson 17. Repeat this process until the caisson construction is completed.

[0063] Example 3

[0064] As another embodiment, in steps five and six of embodiment two, when making the standard segment caisson 17, an adjustable arc template system is also used for arc-starting formwork and in-situ casting. The specific steps are as follows: first, tie the steel bars of the standard segment 17 of the caisson, pre-embed the caisson pre-embedded parts 14, install the adjustable arc template system, screw in the nuts 5 and the long screw rods 4 to start the arc, and then pour concrete and cure it.

[0065] After the concrete reaches a certain strength, the adjustable arc-shaped formwork system is removed, the caisson wall is pressed down, and the construction of the next standard segment 17 of the caisson continues; this process is repeated until the construction of the working caisson is completed.

Claims

1. A template system for ultra-deep segmental sinking of large-diameter working wells, characterized in that: This includes adjustable curved templates, pre-embedded iron welded steel brackets cantilevered operating platforms, externally grounded fastener-type scaffolding, and internally suspended safety protection platforms; The adjustable arc template includes an inner template arc-starting system and an outer template arc-starting system. Both the inner and outer template arc-starting systems include vertical back ribs (1), wooden templates (7), and long screws (4). Steel plates (3) are welded between the vertical back ribs (1), and the long screws (4) pass through the steel plates (3) to support or stretch the wooden templates (7). The pre-embedded iron parts welded steel bracket cantilevered operating platform includes channel steel (19). The channel steel (19) is set in the first section caisson (15) through the caisson pre-embedded parts (14). The channel steel (19) is fixed with an internal scaffold (16) through the vertical rod positioning cylinder (25). The outer ground-mounted coupler scaffolding includes an outer scaffolding (11) and an arc-shaped steel plate (29). The arc-shaped steel plates (29) are spliced ​​together and surround the outer side of the caisson. The outer scaffolding (11) is erected on the arc-shaped steel plate (29) through the vertical rod limiting groove (31). The inner suspended safety protection platform includes an operating platform (51) and a lifting mechanism. The lifting mechanism is located on the outside of the caisson and includes a slide rail (45) and a traveling mechanism (48). The traveling mechanism (48) moves along the slide rail (45), and the operating platform (51) is suspended on the inside of the caisson by a steel wire rope (50) below the traveling mechanism (48). The outer template arc system includes vertical back ribs (1), horizontal back ribs (2) and wooden templates (7). A steel plate (3) is welded between two adjacent vertical back ribs (1). A set of pre-drilled screw holes (8) is provided on the steel plate (3). A long screw (4) is provided between the vertical back ribs (1). The long screw (4) is tightened by a nut (5). The wooden template (7) is spliced ​​and fixed by a short screw (6) and a nut (5). The inner template arc system includes vertical back ribs (1), wooden templates (7) and inner template arc back ribs (10). A steel plate (3) is welded between two adjacent vertical back ribs (1). Three sets of pre-drilled screw holes (8) are provided on the horizontal surface of the steel plate (3). The long screw (4) penetrates the steel plate (3). The bottom of the long screw (4) supports the wooden template (7) through the inner template arc back ribs (10). The pre-embedded iron welded steel bracket cantilever operating platform includes a caisson pre-embedded part (14), a channel steel (19), and a diagonal brace (18). The caisson pre-embedded part (14) is located in the first section of the caisson (15). The channel steel (19) is provided with a pipe clamp (22), a fixing steel bar (24), and a vertical rod positioning cylinder (25). The vertical rod positioning cylinder (25) is inserted with a vertical rod (21) of the inner scaffold (16). The vertical rod positioning cylinder (25) is locked by bolts (23) and pipe clamps (22). The fixing steel bar (24) is provided with a pipe clamp hole (26) for bolt (23) locking and a pipe clamp slot (27).

2. The template system for ultra-deep segmental sinking of large-diameter working wells according to claim 1, characterized in that: The first section of the caisson (15) has a concrete base plate (36) on the outer soil surface. The outer ground-mounted fastener scaffolding includes an outer scaffolding (11) and an arc-shaped steel plate (29). The arc-shaped steel plate (29) is located on the outside of the template. The arc-shaped steel plate (29) has a vertical rod limiting groove (31). Angle braces (39) are welded around the vertical rod limiting groove (31). The vertical rods (21) of the outer scaffolding (11) are inserted into the vertical rod limiting groove (31) and fixed by through bolts (38) and butt couplers (37). The arc-shaped steel plate (29) has fixing screw holes (30). Adjacent arc-shaped steel plates (29) are spliced ​​together into a whole by large screws (35) and large nuts (34).

3. The template system for ultra-deep segmental sinking of large-diameter working wells according to claim 1, characterized in that: The inner suspended safety protection platform includes an operating platform (51) and a lifting mechanism. The lifting mechanism includes a slab foundation (40), a control host (41), an inner support bracket (42), a lifting arm (43), a counterweight (44), a slide rail (45), a slewing bearing (46), a slewing mechanism (47), and a traveling mechanism (48). A standardized support bracket (49) is provided below the traveling mechanism (48). The operating platform (51) is suspended inside the caisson by a steel wire rope (50) below the standardized support bracket (49). The traveling mechanism (48) of the inner suspended safety protection platform is composed of pulleys (53). The traveling mechanism (48) moves along the slide rail (45) through two sets of upper and lower pulleys (53). A motor (52) is provided on the traveling mechanism (48).

4. The construction method of the ultra-deep segmental sinking large-diameter working well template system as described in any one of claims 1 to 3, characterized in that, Includes the following steps: Step 1: Erect scaffolding, tie the reinforcing bars of the first section of the caisson (15), set up the caisson embedded parts (14), install the adjustable arc template system and start the arc of the wooden templates (7) on the inner and outer sides of the caisson; after pouring the first section of the caisson (15), remove the adjustable template system. Step 2: Sink the first section of the caisson (15) to the predetermined position, remove the soil in the pit, hoist the operating platform (51) through the crane mechanism, set up the pre-embedded iron parts welded steel bracket cantilever operating platform at the pre-embedded parts (14) of the caisson, and install the internal scaffolding (16). Step 3: Splice arc-shaped steel plates (29) on the outside of the first section of the caisson (15) to form an integral ring-shaped steel plate on the outside of the caisson; Step 4: Install the outer scaffolding (11) in layers above the overall annular steel plate on the outside of the caisson; install the connecting steel pipe (20) between the inner scaffolding (16) and the top of the outer scaffolding (11). Step 5: Install and splice the precast segments of the standard segment caisson (17) to form a complete standard segment caisson (17). Step 6: Repeat steps 2 and 5 to sink the existing caisson and construct a new standard segment caisson (17), repeating this process until the caisson construction is completed.

5. The construction method of the ultra-deep segmental sinking large-diameter working well template system according to claim 4, characterized in that, In step two: Weld diagonal bracing (18) and channel steel (19) at the caisson pre-embedded part (14), insert vertical rod (21) into vertical positioning cylinder (25), tighten bolts (23) on fixing steel bar (24), set up pre-embedded iron part welded steel bracket cantilevered operating platform, and then install internal scaffolding (16) on pre-embedded iron part welded steel bracket cantilevered operating platform.

6. The construction method of the ultra-deep segmental sinking large-diameter working well template system according to claim 4, characterized in that, In step three: an arc-shaped steel plate (29) is installed on the concrete base plate (36) outside the first section of the caisson (15). When two adjacent arc-shaped steel plates (29) are respectively the first arc-shaped template (32) and the second arc-shaped steel plate (33), the first arc-shaped template (32) and the second arc-shaped steel plate (33) are spliced ​​together by a large screw (35) and a large nut (34) to form an integral ring-shaped steel plate on the outside of the caisson; the large screw (35) is embedded in the concrete base plate (36).

7. The construction method of the ultra-deep segmental sinking large-diameter working well template system according to claim 4, characterized in that, In step four: first, insert the vertical rod (21) into the vertical rod limiting groove (31), then lock the through bolt (38), and install the connecting fastener (37) so that the vertical rod (21) is fixed on the arc-shaped steel plate (29). Then continue to install the external scaffolding (11). The external scaffolding (11) includes the first layer of scaffolding and the second layer of scaffolding. Ground embedded parts (13) are provided on the bottom surface outside the caisson. The first layer of scaffolding is connected to the caisson embedded parts (14) of the first section of the caisson by using diagonal bracing steel pipes (12). The second layer of scaffolding is connected to the ground embedded parts (13) by diagonal bracing steel pipes (12). The inner and outer scaffolding connecting steel pipes (20) are installed between the top of the inner scaffolding (16) and the outer scaffolding (11).

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