CN112681379A - Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine - Google Patents

Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine Download PDF

Info

Publication number
CN112681379A
CN112681379A CN202011536744.7A CN202011536744A CN112681379A CN 112681379 A CN112681379 A CN 112681379A CN 202011536744 A CN202011536744 A CN 202011536744A CN 112681379 A CN112681379 A CN 112681379A
Authority
CN
China
Prior art keywords
constructing
steel
degree full
construction method
horsewell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011536744.7A
Other languages
Chinese (zh)
Inventor
杨旭明
解萍
杨启双
曹磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Geruite Pipe Network Engineering Co ltd
Original Assignee
Jiangsu Geruite Pipe Network Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Geruite Pipe Network Engineering Co ltd filed Critical Jiangsu Geruite Pipe Network Engineering Co ltd
Priority to CN202011536744.7A priority Critical patent/CN112681379A/en
Publication of CN112681379A publication Critical patent/CN112681379A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Earth Drilling (AREA)

Abstract

The invention provides a construction method for constructing a horsewell by a 360-degree full-rotation circular vertical shaft pipe shaking machine, which comprises the following steps: supporting and installing duct pieces in the existing pipeline and grouting and reinforcing stratum; measuring and paying off; constructing a pilot tunnel; pressing into a sleeve for digging; continuously excavating the connecting steel pipe; excavating to a design elevation; manually cleaning the bottom; constructing an inner sleeve steel cylinder; drilling a hole in the pipeline in the current situation; mounting waterproof construction on the prefabricated shaft; backfilling and installing the well cover. The technical problem to be solved by the invention is to provide a construction method for constructing a horseback well by using a 360-degree full-rotation circular vertical shaft pipe rocking machine, the horseback well is creatively constructed by using the 360-degree full-rotation circular vertical shaft pipe rocking machine, a steel casing is spun to the underground to serve as a supporting structure, a hydraulic grab bucket machine is used for excavating while the excavation and the supporting operation are carried out synchronously, and meanwhile, a shaft is made of prefabricated reinforced concrete, so that the construction period is saved, the construction cost is reduced, and the requirement of standardized construction is met.

Description

Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine
Technical Field
The invention discloses a construction method for constructing a horseback well, relates to the technical field of engineering, and particularly relates to the analysis field of construction methods for constructing the horseback well by a 360-degree full-rotation circular vertical shaft pipe shaking machine.
Background
The horsehole is a special inspection well which is formed by excavating the pipe top above a formed pipeline, forming a hole in the pipe top and constructing a shaft structure.
Because the riding well is small in size and deep in depth, large machinery cannot be developed, the construction is usually carried out in a mode that a reinforced concrete retaining wall is constructed by a reverse construction method and matched with manual excavation at present, and a shaft is made of cast-in-place reinforced concrete. The construction period is long and the cost is high.
A novel construction method for constructing the horseback is urgently needed, the construction period is shortened, and the construction efficiency is improved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction method for constructing a horseback shaft by a 360-degree full-rotation circular shaft pipe shaking machine, a steel casing is creatively spun to the underground to serve as a supporting structure, a hydraulic grab bucket machine is adopted for excavation while the excavation and the supporting operation are synchronously carried out, meanwhile, a shaft is made of prefabricated reinforced concrete, the shaft construction only needs to greatly save the construction period, reduce the cost and meet the requirements of standardized construction, the construction period is shortened, and the construction efficiency is improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a construction method for constructing a horsewell by a 360-degree full-rotation circular vertical shaft pipe shaking machine comprises the following steps:
step S1: supporting the inner surface of a pipe piece or a pipe section in the existing pipeline by using a plurality of section steels along the direction of the horsehole in the existing pipeline, and grouting and reinforcing the periphery of the existing pipeline in a reinforcing area close to the horsehole;
step S2: measuring and setting out, and digging out a guide pit along the outer side line of the horse riding well;
step S3: the 360-degree full-rotation round shaft pipe shaking machine enters and is positioned, a section of sleeve is hoisted, a synchronous hydraulic grab machine enters, the sleeve is spun to be below the bottom of a pilot tunnel after hoisting is finished, and the hydraulic grab machine starts excavating work synchronously;
step S4: after the steel casing is excavated to the depth of one steel casing, the steel casing is additionally arranged, and the step S3 is repeated to perform circular excavation to the top of the existing pipeline and then the circular excavation is stopped;
step S5: manually cleaning the top of the existing pipeline, sleeving an inner sleeve steel ring in a horsewell into a steel casing, closely attaching the lower end of the inner sleeve steel ring to the existing pipeline, and performing full-circle welding on the joint of the inner sleeve steel ring and the steel casing;
step S6: slowly chiseling a hole at the top of the existing pipeline, wherein the diameter of the hole is smaller than that of the horsehole;
step S7: the method comprises the following steps of matching the depths of different wells by utilizing the combination of prefabricated shafts with different lengths, installing the shafts to the ground on site according to process requirements, and performing waterproof operation on the shafts;
step S8: the 360-degree full-rotation circular shaft pipe shaking machine enters the field again to pull out the steel casing for the next use;
step S9: and after the steel casing is pulled out, concrete or an original state is adopted to fill the gap between the shaft and the retaining wall, and then the well cover is constructed.
The medium-sized steel supporting range in the step S1 is a range with the center line of the horsewell as a circle and the radius of 3m, and the distance between two adjacent section steels is 1 m.
Preferably, the reinforcement area in step S1 is the range of 1m outside the upper half of the existing pipe.
In step S1, sleeve valve tubes are used for grouting reinforcement.
Further, the depth of the pilot pit in step 2 is 0.3 m.
Preferably, the steel casing is always positioned below the excavation surface in the step S3, so as to prevent the soil of the well wall from collapsing.
Furthermore, in the step S4, a sawtooth steel pipe is arranged at the bottom of the steel casing, the bottom of the sawtooth steel pipe is in a sawtooth shape and is distributed, and hard alloy cutters are welded at two ends of the sawtooth, so that the steel casing can be smoothly screwed into the ground.
Preferably, the diameter of the sawtooth steel pipe is 30-50mm larger than that of the steel casing.
Furthermore, in step S4, the two steel casings are connected by welding or bolting.
Further, in the step S7, the shaft is sealed by using a combination of a sealing rod and micro-expansive concrete.
The invention has the beneficial effects that:
the technical problem to be solved by the invention is to provide a construction method for constructing a horseback well by using a 360-degree full-rotation circular vertical shaft pipe rocking machine, the horseback well is creatively constructed by using the 360-degree full-rotation circular vertical shaft pipe rocking machine, a steel casing is spun to the underground to serve as a supporting structure, a hydraulic grab bucket machine is used for excavating while the excavation and the supporting operation are carried out synchronously, and meanwhile, a shaft is made of prefabricated reinforced concrete, so that the construction period is saved, the construction cost is reduced, and the requirement of standardized construction is met.
1. The invention creatively provides a method for using a 360-degree full-rotation circular shaft pipe rocking machine for constructing a horse riding well, replaces the traditional mode of constructing a reinforced concrete retaining wall by a reverse construction method and matching with manual excavation to carry out construction, adopts cast-in-place reinforced concrete in a shaft, shortens the construction period, reduces the construction cost and provides a brand new thought for the construction of the horse riding well.
2. The invention uses the steel casing to replace the conventional reinforced concrete structure as the support structure of the riding well. The construction is more convenient, and the steel protects a recoverable recycling, and construction cost is lower.
3. The invention adopts full-mechanized, excavation and supporting structure synchronous construction, and the construction is quicker and safer.
4. The shaft of the horse riding well adopts an assembled prefabricated reinforced concrete structure, the cast-in-place manufacturing is converted into modularized concrete prefabricated industrial production, and the construction site is only responsible for assembling according to the process requirements, so that the construction efficiency and the finished product quality are improved, the loss of construction raw materials and the influence on the surrounding environment are reduced, and the construction cost is saved.
Drawings
FIG. 1 illustrates a method of constructing a horsewell according to the present invention;
FIG. 2 is a schematic illustration of a construction scenario of the present invention;
FIG. 3 is a structural view of the steel casing of the present invention.
1-reinforcing area, 2-supporting area, 3-guide pit, 4-existing pipeline, 5-inner sleeve steel ring, 6-sawtooth steel pipe, 7-steel protective cylinder and 8-cutter.
Detailed Description
The construction method for constructing the horseback hole by using the 360-degree full-rotation circular shaft pipe shaking machine of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, a construction method for constructing a horsehole by a 360-degree full-rotation circular shaft pipe shaking machine comprises the following steps:
step S1: supporting the inner surface of a pipe piece or a pipe section in the existing pipeline 4 by using a plurality of section steels 2 along the direction of the riding well in the existing pipeline 4, and grouting and reinforcing the periphery of the existing pipeline 4 in a reinforcing area 1 close to the riding well;
step S2: measuring and setting out, and digging out a pilot hole 3 along the outer side line of the horse riding well;
step S3: the 360-degree full-rotation round shaft pipe shaking machine enters and is positioned, a section of sleeve is hoisted, a synchronous hydraulic grab machine enters, the sleeve is spun to the position below the bottom of a guide pit 3 after hoisting is finished, and the hydraulic grab machine starts excavating work synchronously;
step S4: after the steel casing 7 is excavated to the depth of one steel casing 7, the steel casing 7 is additionally arranged, and then the step S3 is repeated to perform circular excavation to the top of the existing pipeline 4 and then the circular excavation is stopped;
step S5: manually cleaning the top of the existing pipeline 4, sleeving the inner sleeve steel ring 5 in the riding well into the steel casing 7, closely attaching the lower end of the inner sleeve steel ring 5 to the existing pipeline 4, and welding the joint of the inner sleeve steel ring 5 and the steel casing 7 all around;
step S6: slowly chiseling a hole at the top of the existing pipeline 4, wherein the diameter of the hole is smaller than that of the riding well;
step S7: the method comprises the following steps of matching the depths of different wells by utilizing the combination of prefabricated shafts with different lengths, installing the shafts to the ground on site according to process requirements, and performing waterproof operation on the shafts;
step S8: the 360-degree full-rotation circular shaft pipe shaking machine enters the field again to pull out the steel casing 7 for the next use;
step S9: and after the steel casing 7 is pulled out, concrete or an original state is adopted to fill the gap between the shaft and the retaining wall, and then the well cover is constructed.
In step S1, the support range of the section steel 2 is a range in which the center line of the horsewell is circular and the radius is 3m, and the distance between two adjacent section steels 2 is 1 m.
Preferably, in step S1, the reinforcement region 1 is located outside the upper half of the conventional duct 4 by 1 m.
In step S1, sleeve valve tubes are used for grouting reinforcement.
Further, the depth of the pilot hole 3 in step 2 is 0.3 m.
Preferably, the steel casing 7 is always positioned below the excavation surface in step S3, so as to prevent the soil of the well wall from collapsing.
Further, in the step S4, the bottom of the steel casing 7 is provided with the sawtooth steel tube 6, the bottom of the sawtooth steel tube 6 is sawtooth-shaped and distributed, and hard alloy cutters 8 are welded at two ends of the sawtooth, so that the steel casing 7 can be smoothly screwed into the ground.
Preferably, the diameter of the sawtooth steel pipe 6 is 30-50mm larger than that of the steel casing 7.
Furthermore, in step S4, the two steel casings 7 are connected by welding or bolting.
Further, in the step S7, the shaft is sealed by using a combination of a sealing rod and micro-expansive concrete.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
As used herein, unless otherwise specified the use of the ordinal adjectives "first", "second", "third", etc., to describe a common object, merely indicate that different instances of like objects are being referred to, and are not intended to imply that the objects so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein. Furthermore, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The present invention has been disclosed in an illustrative rather than a restrictive sense, and the scope of the present invention is defined by the appended claims.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (10)

1. A construction method for constructing a horsewell by a 360-degree full-rotation circular vertical shaft pipe shaking machine is characterized by comprising the following steps:
step S1: supporting the inner surfaces of pipe sheets or pipe sections in the existing pipeline (4) by using a plurality of section steels (2) along the direction of the horseback riding well in the existing pipeline (4), and grouting and reinforcing in a reinforcing area (1) close to the horseback riding well on the periphery of the existing pipeline (4);
step S2: measuring and setting out, and digging out a guide pit (3) along the outer side line of the horse riding well;
step S3: the 360-degree full-rotation round shaft pipe shaking machine enters and is positioned, a section of sleeve is hoisted, a synchronous hydraulic grab bucket machine enters, the sleeve is spun to be below the bottom of a guide pit (3) after hoisting is finished, and the hydraulic grab bucket machine starts to excavate synchronously;
step S4: after the steel casing (7) is excavated to the depth of one steel casing (7), the steel casing (7) is additionally arranged, and then the step S3 is repeated to perform circular excavation to the top of the existing pipeline (4) and then the circular excavation is stopped;
step S5: manually cleaning the top of the existing pipeline (4), sleeving an inner sleeve steel ring (5) in a riding well into a steel casing (7), closely attaching the lower end of the inner sleeve steel ring (5) to the existing pipeline (4), and welding the joint of the inner sleeve steel ring (5) and the steel casing (7) all around;
step S6: slowly chiseling a hole at the top of the existing pipeline (4), wherein the diameter of the hole is smaller than that of the riding well;
step S7: the method comprises the following steps of matching the depths of different wells by utilizing the combination of prefabricated shafts with different lengths, installing the shafts to the ground on site according to process requirements, and performing waterproof operation on the shafts;
step S8: the 360-degree full-rotation round vertical shaft pipe shaking machine enters the field again to pull out the steel casing (7) for the next use;
step S9: and after the steel casing (7) is pulled out, concrete or an original state is adopted to fill the gap between the shaft and the retaining wall, and then the well cover is constructed.
2. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
in the step S1, the support range of the section steel (2) is a range with the center line of the horsewell as a circle and the radius of 3m, and the distance between two adjacent section steels (2) is 1 m.
3. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
in step S1, the reinforcement region (1) is outside the upper half of the conventional duct (4) by 1 m.
4. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
in step S1, sleeve valve tubes are used for grouting reinforcement.
5. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
the depth of the pilot hole (3) in the step 2 is 0.3 m.
6. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
in the step S3, the steel casing (7) is always positioned below the excavation surface, so that the soil of the well wall is prevented from collapsing.
7. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
and step S4, the bottom of the steel protective cylinder (7) is provided with a sawtooth steel pipe (6), the bottom of the sawtooth steel pipe (6) is in a sawtooth shape and is distributed, and hard alloy cutters (8) are welded at two ends of the sawtooth, so that the steel protective cylinder (7) can be smoothly screwed into the ground.
8. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 7,
the diameter of the sawtooth steel pipe (6) is 30-50mm larger than that of the steel protective cylinder (7).
9. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
in the step S4, the two steel protective cylinders (7) are connected by welding or bolts.
10. The construction method for constructing the horsewell by using the 360-degree full-rotation circular shaft pipe shaking machine as claimed in claim 1,
and step S7, the shaft is waterproof by adopting a water stop strip and micro-expansion concrete to combine water stop.
CN202011536744.7A 2020-12-23 2020-12-23 Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine Pending CN112681379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011536744.7A CN112681379A (en) 2020-12-23 2020-12-23 Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011536744.7A CN112681379A (en) 2020-12-23 2020-12-23 Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine

Publications (1)

Publication Number Publication Date
CN112681379A true CN112681379A (en) 2021-04-20

Family

ID=75451039

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011536744.7A Pending CN112681379A (en) 2020-12-23 2020-12-23 Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine

Country Status (1)

Country Link
CN (1) CN112681379A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113338340A (en) * 2021-07-26 2021-09-03 中建七局安装工程有限公司 Reverse construction method for vertical shaft ensuring normal use of existing pipeline
CN114382158A (en) * 2021-12-30 2022-04-22 上海市机械施工集团有限公司 Construction method of ventilation well
CN114382157A (en) * 2021-12-30 2022-04-22 上海市机械施工集团有限公司 Construction method of concrete ventilation well

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013023946A (en) * 2011-07-22 2013-02-04 Taisei Corp Method for constructing manhole and connection main
CN104404983A (en) * 2014-12-08 2015-03-11 宁波市政工程建设集团股份有限公司 Horse riding type well device for pipe jacking construction and construction method thereof
CN108180313A (en) * 2018-02-09 2018-06-19 江苏格睿特管网工程有限公司 360 ° of full circle swinging Circular Shaft pipe-rocking machines and construction
CN109778992A (en) * 2019-02-02 2019-05-21 上海城建水务工程有限公司 A kind of ride well device and its construction method for pipeline construction
CN111456197A (en) * 2020-05-11 2020-07-28 五冶集团上海有限公司 Double-wall steel sleeve horse riding well and construction method thereof
CN111549764A (en) * 2020-05-29 2020-08-18 中铁十一局集团第五工程有限公司 Trestle steel pipe pile bottom anchoring joint

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013023946A (en) * 2011-07-22 2013-02-04 Taisei Corp Method for constructing manhole and connection main
CN104404983A (en) * 2014-12-08 2015-03-11 宁波市政工程建设集团股份有限公司 Horse riding type well device for pipe jacking construction and construction method thereof
CN108180313A (en) * 2018-02-09 2018-06-19 江苏格睿特管网工程有限公司 360 ° of full circle swinging Circular Shaft pipe-rocking machines and construction
CN109778992A (en) * 2019-02-02 2019-05-21 上海城建水务工程有限公司 A kind of ride well device and its construction method for pipeline construction
CN111456197A (en) * 2020-05-11 2020-07-28 五冶集团上海有限公司 Double-wall steel sleeve horse riding well and construction method thereof
CN111549764A (en) * 2020-05-29 2020-08-18 中铁十一局集团第五工程有限公司 Trestle steel pipe pile bottom anchoring joint

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
焦胜军: "《高速铁路桥梁施工与维护(上册)》", 28 February 2011, 西南交通大学出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113338340A (en) * 2021-07-26 2021-09-03 中建七局安装工程有限公司 Reverse construction method for vertical shaft ensuring normal use of existing pipeline
CN114382158A (en) * 2021-12-30 2022-04-22 上海市机械施工集团有限公司 Construction method of ventilation well
CN114382157A (en) * 2021-12-30 2022-04-22 上海市机械施工集团有限公司 Construction method of concrete ventilation well
CN114382157B (en) * 2021-12-30 2024-04-23 上海市机械施工集团有限公司 Construction method of concrete gas permeable well
CN114382158B (en) * 2021-12-30 2024-05-10 上海市机械施工集团有限公司 Construction method of gas permeable well

Similar Documents

Publication Publication Date Title
CN109723065B (en) Reinforcing device and deep foundation pit local freezing reinforcing construction method in water-rich gravel stratum
CN112681379A (en) Construction method for constructing horseback shaft by 360-degree full-rotation circular shaft pipe shaking machine
CN109915167B (en) Construction method for removing full-ring segments of backfill soil of shield tunnel
JP2018024982A (en) Reinforcement method and reinforcement structure of existing pile foundation
CN104806274A (en) Large-span long-distance underground space main body supporting integrated structure and construction method
CN112727466A (en) Construction method for support-free prefabricated assembled type shield tunnel air shaft structure
CN210598976U (en) Shield constructs tail portion slip casting pressure test device
CN214245694U (en) Pile forming system for large-diameter cast-in-situ bored pile in karst area
CN101899831A (en) Active variable-stiffness leveling pile and construction method thereof
CN101161947A (en) Integration method of lagging pile and dewatering well for foundation ditch support
CN110055953B (en) Multistage series-connection assembled type recyclable miniature steel pipe pile and construction method thereof
JP2007162323A (en) Wall body forming method and wall body
CN114718577A (en) Underground excavation tunnel supporting construction
CN211038701U (en) Mine method subway interval air shaft with shield first and well second
CN209854709U (en) Pressure-grouting cement soil static pressure pipe pile structure
CN219061652U (en) Middle-short range underground pipeline jacking pipe tunnel construction device
CN217923980U (en) A only starch sleeve for open caisson dragging pipe construction
CN219080388U (en) Pier circular deep foundation
CN216999873U (en) A butt-joint structural that is used for underground continuous wall and tunnel to interface
JP2019070283A (en) Segment, buried structure and construction method of buried structure
CN215105392U (en) Retractable prefabricated retaining wall supporting structure for manual hole digging pile
CN220599801U (en) Shaft supporting structure suitable for shaft development machine
CN220910657U (en) Horizontal pipe curtain protection structure for gas pipeline
JP2003082689A (en) Execution method for foundation of steel pipe pile
US5676491A (en) Buried pipe laying method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210420