CN113294159A - High-stability working well structure suitable for long-distance large-section jacking pipe and construction method - Google Patents
High-stability working well structure suitable for long-distance large-section jacking pipe and construction method Download PDFInfo
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- 239000002689 soil Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 5
- 239000011150 reinforced concrete Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
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- 230000002787 reinforcement Effects 0.000 description 5
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D8/00—Shafts not provided for in groups E21D1/00 - E21D7/00
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention belongs to the technical field of pipe jacking construction, and particularly relates to a high-stability working well structure and a construction method suitable for long-distance large-section pipe jacking. According to the invention, a relatively large driving force required by long-distance large-section pipe jacking operation can be stably provided for a long time by arranging the perforated well body wall plate, the side well body wall plate, the vertical deepening groove, the rear seat plate, the well body bottom plate unit, the jacking base unit, the bottom reinforcing column unit and the exposed reinforcing column unit in the rectangular vertical shaft. The invention has the following advantages: the working well has high structural stability, and the five side surfaces are provided with plates cast by reinforced concrete, so that the soil layer collapse is not easy to occur in the working well; second, the base unit is advanced as the direct action position of push pipe operation in the top, and its below, rear end and both sides all have connection structure, and mounting structure intensity is great, can bear the weight of the great driving force relatively, can satisfy the requirement of the big section push pipe construction of long distance well.
Description
Technical Field
The invention belongs to the technical field of pipe jacking construction, and particularly relates to a high-stability working well structure and a construction method suitable for long-distance large-section pipe jacking.
Background
The pipe jacking construction refers to a trenchless construction method, which mainly comprises the steps of firstly setting a working well, then jacking a heading machine or a pipe body directly in the working well into a soil layer by means of jacking equipment, and finally repeating the operation of the plurality of sections of pipe bodies, so that the whole pipeline laying work can be completed in a preset interval. On the other hand, there are of course many places to be noticed or monitored throughout the construction process, such as monitoring and correction of the pipe jacking angle, control of the grouting process, protection of the earth above, and improvement of the pipe joint process.
In addition, in various concrete pipe jacking construction methods, for long-distance and large-section pipe jacking operation, attention is particularly needed to be paid to: firstly, controlling a jacking angle in a long-distance pipe jacking process; secondly, the stability of structure is advanced in the work well, otherwise will appear that follow-up body angular deviation is big that corresponds to and the problem that the work well structure collapses or the body top can not go into.
The working well in the prior art mainly comprises a well body, a rear seat wall, a jack and a set of auxiliary systems for ensuring accurate jacking action, such as a limiting track and laser alignment equipment. However, the existing working well structure has the biggest problems of insufficient strength and insufficient stability, and the problem that the rear seat wall is cracked and collapsed is caused because the existing working well structure is far from insufficient by only depending on one wall body as the support of jacking force, so that relatively large jacking force cannot be provided.
Therefore, in summary, a working well structure with reinforced structure and higher stability is urgently needed to ensure a larger jacking force required in long-distance large-section pipe jacking construction.
Patent publication number is CN211666720U, and the china utility model patent that bulletins day is 2020.10.13 discloses a push pipe working well advances structure, and it includes the back seat wall and is fixed in the device that advances that pushes up on the back seat wall, still includes the pillar of adjacent setting, and is adjacent can dismantle between the pillar and be connected with the casting mould, the relative both sides face of casting mould respectively with pillar parallel and level, casting mould cavity sets up, the back seat wall is pour and is fixed in the casting mould, the casting mould middle part divide into front mould and back mould along pillar length direction.
But the jacking structure in the utility model patent, its joint strength with the well body is obviously not enough, only is connected with well body bottom plate, and the jacking force maximum value that so allows just can not be too big, is being used for big section push pipe work in-process, just appears whole jacking structure aversion easily, emptys or even breaks the problem that bursts apart.
Disclosure of Invention
The invention provides a high-stability working well structure suitable for long-distance large-section pipe jacking and a construction method, which can achieve the advantages of high structural strength and high stability of a working well by arranging a perforated well wall plate, a side well wall plate, a vertical deepening groove, a rear seat plate, a well bottom plate unit, a jacking base unit, a bottom reinforcing column unit and an exposed reinforcing column unit in a rectangular vertical shaft, and can stably provide relatively large driving force required by long-distance large-section pipe jacking operation for a long time.
The technical scheme adopted by the invention for solving the problems is as follows: high stability working well structure suitable for big section push pipe of long distance, including the rectangle shaft, trompil well body wallboard to and two side well body wallboards, still including setting up just keep away from on the bottom surface in the rectangle shaft the vertical deepening groove of trompil well body wallboard one side position department sets up back bedplate on the vertical deepening groove sets up well body bottom plate unit on the bottom surface in the rectangle shaft sets up jacking base unit on the well body bottom plate unit buries underground bottom surface below and transverse connection in the rectangle shaft back bedplate unit, vertical passing connect behind the well body bottom plate unit jacking base unit's bottom anchor strut unit, and set up on the jacking base unit and connect side well body wallboard with the anchor strut unit that exposes of back bedplate.
The further preferred technical scheme is as follows: well body bottom plate unit is including setting up just be located on the bottom surface in the rectangle shaft rectangle bottom plate between trompil well body wallboard, side well body wallboard and the back bedplate sets up the base mounting groove on the rectangle bottom plate upper surface sets up be used for the installation of pegging graft in the base mounting groove the front end post hole of bottom anchor post unit, and set up be in the base mounting groove is interior and be used for the installation of pegging graft the rear end post hole of bottom anchor post unit.
The further preferred technical scheme is as follows: the jacking base unit comprises a base plate arranged on the base mounting groove, a front end vertical plate and a rear end vertical plate which are respectively arranged at two ends of the base plate, a jacking hole arranged on the front end vertical plate, a cylinder groove upwards formed from the lower surface of the front end vertical plate, and a cylinder hole arranged on the rear end vertical plate.
The further preferred technical scheme is as follows: bottom reinforced column unit is including setting up bottom surface below just is close to in the rectangle shaft the front end built-in panel of trompil well body wallboard one side position department sets up rectangle shaft bottom surface below just is close to the rear end built-in panel of rear seat board one side position department sets up on the front end built-in panel and upwards pass insert behind the front end cylinder hole the front end bottom cylinder in cylinder groove, and set up and be in on the rear end built-in panel and upwards pass in proper order the rear end cylinder hole with the rear end bottom cylinder in cylinder hole.
The further preferred technical scheme is as follows: the bottom reinforcing column unit further comprises an upper transverse column arranged between the front end embedded plate and the rear seat plate and a lower transverse column arranged between the rear end embedded plate and the rear seat plate.
The further preferred technical scheme is as follows: the long edge of the front-end embedded plate is a transverse edge, and the long edge of the rear-end embedded plate is a vertical edge.
The further preferred technical scheme is as follows: the exposed reinforcing column unit comprises a side wall plate reinforcing column which is arranged on the upper surface of the rear end vertical plate and connected with an exposed end at the upper part of the rear end bottom cylinder, and a rear seat plate reinforcing column which is arranged between the rear end vertical plate and the rear seat plate.
The further preferred technical scheme is as follows: the jacking base unit further comprises a jack bottom plate arranged on the base plate, and a lower slotted plate arranged on the upper surface of the jack bottom plate and used for being clamped and connected with the side wallboard reinforcing column.
The further preferred technical scheme is as follows: the quantity of front end bottom cylinder, rear end bottom cylinder, the horizontal post in top, the horizontal post in below and back bedplate reinforcement post is two.
The construction method of the high-stability working well structure suitable for long-distance large-section jacking pipes is characterized in that the embedding depth range of the upper surfaces of the front-end embedded plate and the rear-end embedded plate is 1-5m compared with the inner bottom surface of the rectangular vertical shaft.
The invention has the following advantages: the working well has high structural stability, and the five side surfaces are provided with plates cast by reinforced concrete, so that the soil layer collapse is not easy to occur in the working well; secondly, the jacking base unit is used as a direct acting part for jacking pipe operation, and connecting structures are arranged below, at the rear end and at the two sides of the jacking base unit, so that the mounting structure has higher strength, can bear relatively larger driving force, and can well meet the requirement of long-distance large-section jacking pipe construction; thirdly, the self stability of the reinforcing structure of the jacking base unit is high, the structure combination is simple and efficient, and the mounting and dismounting are convenient; fourthly, the exposed part of the high-stability working well structure is simple in structure and relatively small, and the construction operation of the jacking pipe can be more simple and convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the position of the well body bottom plate unit in a top view.
Fig. 3 is a schematic structural view of the jacking base unit in the invention.
Fig. 4 is a schematic structural view of the bottom reinforcing column unit in a top view according to the present invention.
Fig. 5 is a schematic structural view of the exposed reinforcing column unit in a top view.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1, 2, 3, 4 and 5, the high-stability working well structure suitable for long-distance large-section jacking pipes comprises a rectangular vertical shaft 11, a perforated well wall plate 12, the device comprises two side well wall plates 13, a vertical deepening groove 1 which is arranged on the inner bottom surface of the rectangular vertical well 11 and is far away from one side of the perforated well wall plate 12, a back seat plate 2 which is arranged on the vertical deepening groove 1, a well bottom plate unit 3 which is arranged on the inner bottom surface of the rectangular vertical well 11, a jacking base unit 4 which is arranged on the well bottom plate unit 3, a bottom reinforcing column unit 5 which is buried under the inner bottom surface of the rectangular vertical well 11 and is transversely connected with the back seat plate unit 2, vertically penetrates through the well bottom plate unit 3 and then is connected with the jacking base unit 4, and an exposed reinforcing column unit 6 which is arranged on the jacking base unit 4 and is connected with the side well wall plate 13 and the rear seat plate 2.
In this embodiment, a jack is installed on the jacking base unit 4, and the pipe body is aligned with the pipe body hole of the perforated well wall plate 12, so that the jack pushes the pipe body inwards, and then the basic pipe jacking operation can be completed by matching with appropriate auxiliary positioning and safety protection measures.
In addition, if the pipe jacking operation is short-distance and small-sized, the pushing operation between the jacking base and the working well with sufficient strength can be ensured by the reinforced concrete structure alone, but for the long-distance large-section pipe jacking construction in the embodiment, relatively larger pushing force is needed, so that the installation structure of the jacking base unit 4 needs to be strengthened, the pushing reaction force on the jacking base unit 4 can be well digested, the jacking base unit 4 is ensured not to be displaced, deflected or collapsed, and the strengthening of the installation structure of the jacking base unit 4 is mainly realized by the following modes.
Firstly, the jacking base unit 4 is clamped with the well body bottom plate unit 3, so that the basic positioning and mounting effect is ensured.
Secondly, the bottom strengthening column unit 5 is spliced with the jacking base unit 4, and the bottom strengthening column unit 5 is spliced with the well body bottom plate unit 3 and embedded into the soil layer below the rectangular vertical shaft 11, so that the reaction force on the jacking base unit 4 can be shared by the well body bottom plate unit 3 and the soil layer below.
Thirdly, the exposed reinforcing column unit 6 connects the jacking base unit 4 with the side well wall plate 13 and the rear seat plate 2 together, so that the side well wall plate 13 and the rear seat plate 2 can also be used as a supporting part of a reaction force, and finally the jacking base unit 4 and the whole working well are ensured to have the advantages of high structural strength and stable operation of pushing a jacking pipe.
Well body bottom plate unit 3 is including setting up on the bottom surface just be located in the rectangle shaft 11 rectangle bottom plate 301 between trompil well body wallboard 12, side well body wallboard 13 and the back bedplate 2 sets up base mounting groove 302 on the rectangle bottom plate 301 upper surface sets up in the base mounting groove 302 and be used for the grafting installation front end column body hole 303 of bottom reinforced column unit 5, and set up and be in the base mounting groove 302 and be used for the grafting installation rear end column body hole 304 of bottom reinforced column unit 5.
In the present embodiment, the shaft floor unit 3 has several functions as follows.
Firstly, the bottom surface soil layer of rectangular shaft 11 is sealed to the closing cap, the muddy problem of intaking appears in the well to several other well body wallboards of cooperation guarantee the stability of working well self structure.
Secondly, the base mounting groove 302 can ensure that the jacking base unit 4 can be accurately positioned and mounted.
Thirdly, the bottom reinforcing column unit 5 may be installed in the front end cylindrical hole 303 and the rear end cylindrical hole 304, so that the rectangular bottom plate 301 can support a reaction force transmitted from the jacking base unit 4, and a problem of structural collapse and breakage caused by independent stress at the jacking base unit 4 is avoided.
The jacking base unit 4 includes a base plate 401 disposed on the base mounting groove 302, a front end vertical plate 402 and a rear end vertical plate 403 respectively disposed at two ends of the base plate 401, a jacking opening 404 disposed on the front end vertical plate 402, a cylinder groove 405 formed upward from a lower surface of the front end vertical plate 402, and a cylinder hole 406 disposed on the rear end vertical plate 403. The bottom reinforcing column unit 5 comprises a front end embedded plate 501 arranged below the bottom surface in the rectangular vertical shaft 11 and close to one side position of the wall plate 12 of the open-hole well body, a rear end embedded plate 502 arranged below the bottom surface in the rectangular vertical shaft 11 and close to one side position of the rear seat plate 2, a front end bottom column 503 arranged on the front end embedded plate 501 and penetrating upwards to insert into the column groove 405 after penetrating through the front end column hole 303, and a rear end bottom column 504 arranged on the rear end embedded plate 502 and penetrating upwards to pass through the rear end column hole 304 and the column hole 406 in sequence. The bottom reinforcing column unit 5 further includes an upper lateral column 505 provided between the front-end embedment plate 501 and the rear seat plate 2, and a lower lateral column 506 provided between the rear-end embedment plate 502 and the rear seat plate 2. The long edge of the front-end embedded plate 501 is a transverse edge, and the long edge of the rear-end embedded plate 502 is a vertical edge.
In the present embodiment, the method and advantages of using the jacking base unit 4 and the bottom reinforcing column unit 5 are as follows.
First, the jacking base unit 4 includes the "U" main part that sets up according to prior art's mode, base plate 401, front end riser 402, rear end riser 403 and jack are advanced with trompil 404, and newly introduce cylinder groove 405 and cylinder pore 406 can guarantee that the driving force reaction force that receives on the jacking base unit 4 can effective part transmit for bottom reinforced column unit 5, through the mode that structural connection becomes a whole everywhere in the work well, guarantees the high stability of push pipe effect, and the final expression form is exactly can be for a long time, steadily exports great driving force, can satisfy the power requirement of the big section push pipe construction of long distance well.
Secondly, the front-end embedded plate 501 and the rear-end embedded plate 502, which are arranged one behind the other and one above the other, are embedded in a soil layer in a dispersing manner, so that the lower soil layer can be effectively used as an 'installation foundation' of the bottom reinforcement column unit 5, and the support force of the bottom reinforcement column unit 5 on the jacking base unit 4 is ensured to have the advantages of uniform dispersion and large effective stressed area.
Third, front end bottom cylinder 503 and rear end bottom cylinder 504 are used for the snap-on base unit 4 advances in the top, make advance base unit 4 and have a spacing fixed action when the atress, moreover front end bottom cylinder 503 and rear end bottom cylinder 504 simultaneously with rectangular bottom plate 301 is pegged graft, like this rectangular bottom plate 301 is also bottom reinforced column unit 5's "installation foundation", guarantees rectangular bottom plate 301 can be fixed in the below equally advance base unit 4.
Fourthly, the upper transverse column 505 and the lower transverse column 506 are used for sharing the reaction force applied to the bottom reinforcing column unit 5 to the upper region of the rear seat plate 2, so that the structural integrity of the whole working well is higher, the stress intensity applied to the jacking base unit 4 can be greatly reduced, and the problem of structural collapse and fracture caused by independent stress at the jacking base unit 4 is avoided.
The exposed reinforcing post unit 6 includes a side wall plate reinforcing post 601 disposed on the upper surface of the rear end vertical plate 403 and connected to the upper exposed end of the rear end bottom pillar 504, and a rear seat plate reinforcing post 602 disposed between the rear end vertical plate 403 and the rear seat plate 2.
In this embodiment, the side wall plate reinforcing column 601 is used to connect the rear bottom column 504, the jacking base unit 4, and the side shaft wall plate 13 together, so that the side shaft wall plate 13 can also receive the reaction force of the jacking action, and the jacking base unit 4 is not prone to structural collapse by means of integral support, which essentially increases the stress area to reduce the pressure.
The rear seat plate reinforcement columns 602 function similarly to the upper transverse columns 505 and the lower transverse columns 506, and are used for utilizing the upper area of the rear seat plate 2, and similarly, the whole rear seat plate 2 is used as an effective force bearing area, so that the effectiveness of the pipe jacking action is ensured.
The jacking base unit 4 further comprises a jack base plate 407 disposed on the base plate 401, and a lower slotted plate 408 disposed on an upper surface of the jack base plate 407 and adapted to be snap-fitted to the siding reinforcement post 601.
In this embodiment, the whole of the jack bottom plate 407 and the lower open trough plate 408 and other structures of the jacking base unit 4 are movably connected, so that the jack bottom plate is convenient to disassemble, assemble and replace, and the movable connection does not affect the strength of the jacking pipe supporting action.
The number of the front bottom column 503, the rear bottom column 504, the upper transverse column 505, the lower transverse column 506 and the rear seat plate reinforcing column 602 is two.
The construction method of the high-stability working well structure suitable for long-distance large-section jacking pipes is characterized in that the embedding depth range of the upper surfaces of the front-end embedded plate 501 and the rear-end embedded plate 502 is 1-5m compared with the inner bottom surface of the rectangular vertical shaft 11.
In this embodiment, the front pre-buried plate (501), the rear pre-buried plate (502), the front bottom column (503), the rear bottom column (504), the upper transverse column (505), and the lower transverse column (506) are cast in advance to form a whole before being buried, so that a sufficient and appropriate burying depth is ensured below the inner bottom surface of the rectangular shaft 11.
In addition, all mentioned plate bodies, columns and block bodies are of reinforced concrete structures so as to ensure enough strength, a groove body used for being inserted with the rear end bottom column 504 is formed below the side wall plate reinforcing column 601, and the two ends of the rear seat plate reinforcing column 602 are not connected and only abut against the groove body, so that the whole jacking base unit 4 is completely movably installed, and the jacking base unit 4 can be quickly taken down and replaced as long as pouring connection is released at the two ends of the side wall plate reinforcing column 601, therefore, the working well structure in the embodiment also has the advantage that the jacking base is convenient to disassemble and assemble.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (10)
1. High stability working well structure suitable for big section push pipe of long distance, including rectangle shaft (11), trompil well body wallboard (12) to and two side well body wallboards (13), its characterized in that: the rectangular vertical shaft is characterized by further comprising a vertical deepening groove (1) which is arranged on the inner bottom surface of the rectangular vertical shaft (11) and is far away from one side position of a perforated well body wallboard (12), a rear base plate (2) which is arranged on the vertical deepening groove (1), a well body bottom plate unit (3) which is arranged on the inner bottom surface of the rectangular vertical shaft (11), a jacking base unit (4) which is arranged on the well body bottom plate unit (3) is embedded under the inner bottom surface of the rectangular vertical shaft (11) and is transversely connected with the rear base plate unit (2) and vertically penetrates through the well body bottom plate unit (3) and then is connected with a bottom reinforcing column unit (5) of the jacking base unit (4) and is arranged on the jacking base unit (4) and connected with an exposed reinforcing column unit (6) of the side well body wallboard (13) and the rear base plate (2).
2. The high stability working well structure suitable for long distance large section jacking pipe of claim 1, wherein: well body bottom plate unit (3) is including setting up just being located on the bottom surface in rectangle shaft (11) rectangle bottom plate (301) between trompil well body wallboard (12), side well body wallboard (13) and back bedplate (2), set up base mounting groove (302) on rectangle bottom plate (301) upper surface sets up in base mounting groove (302) and be used for the installation of pegging graft front end column body hole (303) of bottom reinforced column unit (5) and set up and be in base mounting groove (302) and be used for the installation of pegging graft rear end column body hole (304) of bottom reinforced column unit (5).
3. The high stability working well structure suitable for long distance large section jacking pipe according to claim 2, wherein: the jacking base unit (4) comprises a base plate (401) arranged on the base mounting groove (302), a front end vertical plate (402) and a rear end vertical plate (403) which are respectively arranged at two ends of the base plate (401), a jacking open hole (404) arranged on the front end vertical plate (402), a cylinder groove (405) which is upwards formed from the lower surface of the front end vertical plate (402), and a cylinder hole channel (406) arranged on the rear end vertical plate (403).
4. The high stability working well structure suitable for long distance large section jacking pipe according to claim 3, wherein: bottom reinforced column unit (5) is including setting up bottom surface below just is close to in rectangle shaft (11) front end pre-buried plate (501) of trompil well body wallboard (12) one side position department sets up rectangle shaft (11) bottom surface below just is close to rear end pre-buried plate (502) of rear seat board (2) one side position department set up on front end pre-buried plate (501) and upwards pass insert behind front end post hole (303) front end bottom cylinder (503) of cylinder groove (405), and set up and be in on rear end pre-buried plate (502) and upwards pass in proper order rear end post hole (304) with rear end bottom cylinder (504) of cylinder pore (406).
5. The high stability working well structure suitable for long distance large section jacking pipe according to claim 4, wherein: the bottom reinforcing column unit (5) further comprises an upper transverse column (505) arranged between the front end embedded plate (501) and the rear seat plate (2), and a lower transverse column (506) arranged between the rear end embedded plate (502) and the rear seat plate (2).
6. The high stability working well structure suitable for long distance large section jacking pipe according to claim 4, wherein: the long edge of the front-end embedded plate (501) is a transverse edge, and the long edge of the rear-end embedded plate (502) is a vertical edge.
7. The high stability working well structure suitable for long distance large section jacking pipe according to claim 5, wherein: the exposed reinforcing column unit (6) comprises a side wall plate reinforcing column (601) which is arranged on the upper surface of the rear end vertical plate (403) and connected with the exposed end of the upper part of the rear end bottom column body (504), and a rear seat plate reinforcing column (602) which is arranged between the rear end vertical plate (403) and the rear seat plate (2).
8. The high stability working well structure suitable for long distance large section jacking pipe of claim 7, wherein: the jacking base unit (4) further comprises a jack base plate (407) arranged on the base plate (401), and a lower slotted plate (408) arranged on the upper surface of the jack base plate (407) and used for being clamped and connected with the side wallboard reinforcing column (601).
9. The high stability working well structure suitable for long distance large section jacking pipe of claim 7, wherein: the number of the front end bottom column (503), the number of the rear end bottom column (504), the number of the upper transverse column (505), the number of the lower transverse column (506) and the number of the rear seat plate reinforcing columns (602) are two.
10. The construction method of the high-stability working well structure suitable for long-distance large-section jacking pipes according to claim 4, characterized by comprising the following steps of: the embedding depth range of the upper surfaces of the front end embedded plate (501) and the rear end embedded plate (502) is 1-5m compared with the inner bottom surface of the rectangular vertical shaft (11).
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| CN202110434910.0A CN113294159B (en) | 2021-04-22 | 2021-04-22 | High-stability working well structure suitable for long-distance large-section jacking pipe and construction method |
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| CN202110434910.0A CN113294159B (en) | 2021-04-22 | 2021-04-22 | High-stability working well structure suitable for long-distance large-section jacking pipe and construction method |
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