CN114526076B - Construction method for suspending shield machine from suspended vertical shaft - Google Patents
Construction method for suspending shield machine from suspended vertical shaft Download PDFInfo
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- CN114526076B CN114526076B CN202210085080.XA CN202210085080A CN114526076B CN 114526076 B CN114526076 B CN 114526076B CN 202210085080 A CN202210085080 A CN 202210085080A CN 114526076 B CN114526076 B CN 114526076B
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- 238000010276 construction Methods 0.000 title claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000005641 tunneling Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/11—Lining shafts; Linings therefor with combinations of different materials, e.g. wood, metal, concrete
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A construction method for hanging a shield machine from a hanging shaft relates to the technical field of shield machine hanging construction, and comprises the following steps of S1: excavating earth; s2: and (3) hanging the vertical shaft out for primary support construction: anchoring a reinforcing steel bar net on a well wall, spraying concrete under high pressure to form a primary supporting surface, and mounting a first section steel supporting structure; s3: the well head ground surface of the lifting vertical shaft is a lifting area, pile foundations are driven into the underground of the lifting area, the upper end of each pile foundation is connected to the ground, and a bearing platform is poured at the ground; s4: construction of a section steel internal support system: installing vertical steel purlins on the primary supporting surface, and installing steel pipe supporting structures between the opposite steel purlins for reinforcing and supporting; s5: and sequentially lifting the shield bodies of the shield machine out of the lifting vertical shaft. The improved construction method of the invention provides a construction scheme that a primary support structure and a section steel internal support system are adopted for the wall of the suspended vertical shaft, and pile foundations and bearing platforms are adopted in a suspended area of ground mining, thereby not only ensuring the stability of bearing force of the suspended vertical shaft, but also shortening the construction period.
Description
Technical Field
The invention relates to the technical field of shield machine lifting construction, in particular to a construction method for lifting a shield machine from a lifting shaft.
Background
When a subway section tunnel is constructed by adopting a shield mining method, tunneling is carried out by adopting two composite earth pressure balance shield machines, the tunnel is started from a large-mileage end vehicle station in the section, the large-section receiving is carried out on the small-mileage end tunnel, after the tunneling of the shield tunnel is finished, a trolley matched with the rear of the shield machine is retracted to an initial well to be lifted out, a shield body is disassembled after being pushed forward by a distance (usually more than one hundred meters), the shield body is divided into a cutter disc, a front shield, a middle shield and a shield tail, and the shield body is sequentially translated into a lifting shaft to be lifted out, so that in order to save construction period, the lifting shaft is excavated to be supported when the shield machine is about to reach the small-mileage end, the lifting of the shield machine is prepared, and the supporting construction mode of the lifting shaft is as follows: the method comprises the steps of earth excavation, primary support structure construction and secondary lining construction, wherein after secondary lining construction maintenance is completed, a vertical shaft is lifted out, and after the lifting bearing requirement is met, a scaffold in the lifting vertical shaft is removed, so that the lifting of a shield body of the shield machine can be started; in summary, the construction process of suspending the shield machine from the suspending shaft includes: in the actual construction process, due to various reasons such as scheduling of engineering project personnel, emergency in construction and the like, the actual situation is that when the tunneling of the shield tunnel is completed, the supporting construction of the suspended shaft is not completed yet, the shield body needs to wait for the secondary lining construction of the suspended shaft in the tunnel, so that the shield machine is idle at a receiving end for a long time, and the completion time of the suspended shaft structure is seriously delayed, so that the whole construction progress is greatly prolonged, and the manufacturing cost is also high.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides a construction method for suspending a shield machine from a suspending vertical shaft, improves the construction method, the construction scheme that the primary support structure and the section steel internal support system are adopted by the wall of the suspended vertical shaft, and the pile foundation and the bearing platform are adopted in the suspended area of the ground production is provided, so that the stability of the bearing force of the suspended vertical shaft can be ensured, and the construction period can be shortened.
The aim of the invention can be achieved by the following technical scheme: the construction method for suspending the shield machine from the suspending vertical shaft comprises the following steps in sequence:
s1: excavating earth to form a suspended vertical shaft;
s2: primary support construction is carried out on the surrounding well walls of the suspended vertical shaft: anchoring a reinforcing steel bar net on a well wall, spraying concrete on the reinforcing steel bar net under high pressure to form a primary supporting surface, and installing a first section steel supporting structure between the opposite primary supporting surfaces;
S3: the well head ground surface of the lifting vertical shaft is a lifting area, pile foundations are driven into the underground of the lifting area, the upper end of each pile foundation is connected to the ground, and a bearing platform is poured at the ground;
S4: construction of a section steel internal support system: installing vertical steel purlins on the primary supporting surface, and installing steel pipe supporting structures between the opposite steel purlins for reinforcing and supporting;
S5: and the crawler crane runs to the hoisting area, and sequentially hoistes out the shield body of the shield machine from the hoisting vertical shaft.
Preferably, the construction method for suspending the shield tunneling machine from the suspending vertical shaft specifically comprises the following steps:
s1: earth excavation construction is carried out to form a hanging shaft, and rotary jet piles and steel structure supports are applied to the periphery of the hanging shaft;
S2: primary support construction is carried out on the surrounding well walls of the suspended vertical shaft: anchoring a reinforcing steel bar net on a well wall by using anchor rods, forming a primary supporting surface by spraying concrete on the reinforcing steel bar net under high pressure, and symmetrically installing two rows of first steel support structures between the primary supporting surfaces perpendicular to the axis of the suspended vertical shaft for reinforcement and support;
S3: the well head ground surface of the vertical shaft is a hoisting area, a bored pile is driven into the underground of the hoisting area to serve as a pile foundation, and a bearing platform is poured at the upper end ground surface of the bored pile;
s4: construction of a section steel internal support system: installing vertical shaped steel purlin on the primary support face, installing steel pipe bearing structure and being used for strengthening and supporting between relative shaped steel purlin, specifically: the lower end of the pre-installed steel purlin is anchored and installed with a bracket as a supporting plate, the steel purlin is supported and fixedly installed on the bracket, the steel purlins are respectively installed on a primary supporting surface perpendicular to the axis of the suspended vertical shaft, and a steel pipe supporting structure is installed between the opposite steel purlins;
S5: and the crawler crane runs to the hoisting area, and sequentially hoistes out the shield body of the shield machine from the hoisting vertical shaft.
Preferably, in the step S4, the steel pipe supporting structure is a plurality of steel pipes, and the steel pipes are sequentially arranged and installed on the section steel purlin from top to bottom.
Preferably, in the step S3, the bored piles are arranged in a2×3 manner, pile heads at the upper ends of the bored piles are chiseled off before the pile cap construction, cushion layer concrete is cast in the pile head chiseled off area, and the pile cap is cast directly after binding reinforcing steel bars on the cushion layer concrete.
Preferably, in the step S2, the first section steel supporting structure is installed in the following manner: vertically installing section steel is sequentially arranged between the opposite primary support surfaces from top to bottom to serve as a reinforcing support; in addition, the section steel diagonal braces are arranged at the four corners of the primary supporting surface and are sequentially arranged from top to bottom.
Compared with the prior art, the invention has the beneficial effects that: under the state of hanging out the shaft primary support, the mode that adopts pile foundation to add the cushion cap to ground hoist and mount district consolidates, erect shaped steel internal stay system on the wall of a well primary support face simultaneously, save original two lining support construction steps, satisfy the reinforcement of ground hoist and mount district, make the lateral wall stability who hangs out the shaft reach the requirement again simultaneously, after improving construction process for hang out the construction degree of difficulty greatly reduced of shield machine from hanging out the shaft, still shortened construction cycle simultaneously, reduced construction cost.
Drawings
Fig. 1 is a schematic top view of a primary support structure and section steel internal support system of a suspended shaft.
FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1.
Fig. 3 is a schematic view of the sectional structure B-B in fig. 1.
Fig. 4 is a schematic view of the C-C cross-sectional structure in fig. 1.
Wherein like parts are designated by like reference numerals throughout the several views; the figures are not drawn to scale.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Examples
The construction method for suspending the shield machine from the suspending vertical shaft comprises the following steps in sequence:
s1: earth excavation construction is carried out to form a hanging shaft 1, and rotary jet piles and steel structure supports are applied to the periphery of the hanging shaft 1;
S2: primary support construction is carried out on the surrounding walls of the suspended vertical shaft 1: anchoring the reinforcing steel bar net on the well wall by using an anchor rod, forming a primary supporting surface by spraying concrete on the reinforcing steel bar net under high pressure, symmetrically installing two rows of first steel support structures 2 between the primary supporting surfaces perpendicular to the axis of the suspended vertical shaft for reinforcing and supporting, wherein the mode of installing the first steel support structures 2 is as follows: the first section steel supporting structures 2 are installed at positions 2.4m outwards from two sides of the central line of the vertical shaft 1 in a manner that: vertically installing section steel is sequentially arranged between the opposite primary support surfaces from top to bottom to serve as a reinforcing support; in addition, the section steel diagonal braces 3 are arranged at the four corners of the primary supporting surface, and the section steel diagonal braces 3 are also arranged in sequence from top to bottom;
s3: the ground of the wellhead of the vertical shaft 1 is a hoisting area, a bored pile 4 is driven underground in the hoisting area to serve as a pile foundation, the bored piles are arranged in a mode of 2 multiplied by 3, pile heads at the upper ends of the bored piles 4 are chiseled off after the bored piles are constructed, cushion layer concrete is poured in the pile head chiseling area, reinforcing steel bars are bound on the cushion layer concrete, and a bearing platform 5 is directly poured for molding;
wherein, the pile diameters of the bored piles 4 are 800mm, the pile lengths are 25m, the bored piles are arranged in a mode of 2 multiplied by 3, and C30 reinforced concrete casting is adopted; after the construction of the bored pile 4 is finished, when the bearing platform 5 is constructed, firstly cleaning up the pile head chiseled by the bored pile 4, measuring the discharge point position, pouring a cushion layer in a pile head chiseling area, wherein the cushion layer is made of C15 fine stone concrete with the thickness of 10cm, binding reinforcing steel bars on site on the cushion layer, pouring C30 reinforcing steel bars on the bearing platform for coagulation, vibrating and compacting the concrete by using an inserted vibrating rod, and sprinkling water for health maintenance;
S4: construction of a section steel internal support system: the vertical steel purlins 6 are arranged on the primary supporting surface, two pairs of steel purlins 6 are respectively arranged at the positions 3.625m outwards from the two sides of the central line of the lifting shaft 1, so the steel purlins 6 are positioned at the two sides of the two rows of first steel support structures 2, HW400 multiplied by 400 is adopted for the specification of the steel purlins 6, and the steel pipe support structures 7 are arranged between the opposite steel purlins 6;
When the profile steel purlin 6 is installed, firstly, installing a bracket 8 at the lower end of the profile steel purlin 6 as a bottom bracket, anchoring the bracket 8 on a primary supporting surface by using YG3 type expansion bolts M24, wherein L=270 mm, hoisting the profile steel purlin 6 to bear the bracket 8 for welding installation, and keeping the vertical linearity of all the profile steel purlins 6 consistent, wherein the linear deviation is not more than 10mm; the upper end of the section steel enclosing purlin 6 is welded with a top suspension device, the suspension device is welded by channel steel, the end part of the suspension device is fixed in the bearing platform 5, and the suspension device is required to be kept vertical to the section steel enclosing purlin 6; the section steel purlin 6 is fixed on the primary supporting surface through a pressing plate by using YG3 type expansion bolts M24, wherein L=270 mm; and finally, selecting a steel pipe with phi 325 and t=10mm as the steel pipe supporting structure 7, welding and fixing the steel section enclosing purlin 6 with the end part of the steel pipe by using angle steel and a supporting plate, and arranging and installing the steel section enclosing purlin 6 in sequence from top to bottom along the vertical direction of the steel section enclosing purlin 6 during welding the steel pipe.
S5: and the crawler crane runs to the hoisting area, and sequentially hoistes the shield body of the shield machine out of the hoisting shaft 1.
And (3) combining an actual subway project shield machine to hoist out a construction example, constructing a subway section tunnel by adopting a shield and mine method, tunneling by adopting two 2 composite earth pressure balance shield machines, starting from a section large mileage end vehicle station, and receiving in a small mileage end tunnel large section. After the tunneling of the shield tunnel is completed, the rear matched trolley retreats to the starting well to be lifted out, the shield body is pushed forward by 161m, and is disassembled into a cutter disc, a front shield, a middle shield and a shield tail in sections, and the cutter disc, the front shield, the middle shield and the shield tail are sequentially translated to the lifting shaft to be lifted out; the original design scheme of the engineering shield machine lifting at this time is that in the secondary lining lifting scheme, namely the shield machine lifting needs to wait for the construction of a second lining structure of a lifting shaft, the interior of a scaffold in the well is dismantled, the shield machine is lifted out, and the engineering quantity and the construction period of the secondary lining lifting scheme are analyzed as shown in table 1; however, the actual engineering situation is that the construction progress of the lifted shaft is seriously lagged, if the construction is still carried out according to the original scheme, the shield machine is idle for a long time at the receiving end and cannot be lifted out, so that the technical scheme of lifting the shield machine after properly reinforcing the ground lifting area in the state of the primary supporting surface of the side wall of the lifted shaft is studied, and the shield machine lifting construction method in the embodiment of the invention is developed.
TABLE 1 engineering quantity and construction period analysis of secondary lining hoisting scheme
TABLE 2 Primary support lifting scheme main new engineering quantity statistics table
And calculating according to the integral construction characteristics and all factors of the actual engineering project, wherein the time for the shield machine to reach the small mileage end is about 6 months earlier than the construction completion time of the second lining structure of the suspended shaft. If a two-lining hanging-out scheme is adopted, the idle time of two shield machines is overlong, economic losses caused by shield maintenance and shield machine idle are immeasurable, compared with the original planning scheme (a two-lining hanging-out scheme), the construction scheme provided by the application has the advantages that 26.9 ten-thousand-element material investment and labor investment (about 10 ten-thousand) are increased, the total newly-increased investment is 36.9 ten-thousand-element, at least about 160 days can be saved, the total cost investment of the shield machine idle for 160 days and other expenditure is far greater than 36.69 ten-thousand-element, the economic benefit is obvious, the construction period is greatly shortened, and through practical construction verification, the foundation pit is stable and free from abnormality in the hanging-out process, the feasibility of the reinforcement technology is excellent, the effect is good, and the reference can be provided for similar working condition engineering construction.
The structures, proportions, sizes, etc. shown in the drawings herein are shown in detail for purposes of illustration only, and are not intended to limit the scope of the invention, which is defined in the claims, any structural modification, proportional change or size adjustment should still fall within the scope of the disclosure without affecting the efficacy and achievement of the present invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The invention has been described above with reference to preferred embodiments, but the scope of the invention is not limited thereto, and any and all technical solutions falling within the scope of the claims are within the scope of the invention. Various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.
Claims (2)
1. The construction method for suspending the shield machine from the suspending vertical shaft is characterized by comprising the following steps of:
S1: earth excavation construction is carried out to form a hanging vertical shaft (1), and rotary jet piles and steel structure supports are arranged around the hanging vertical shaft (1);
S2: primary support construction is carried out on the surrounding well walls of the suspended vertical shaft (1): anchoring a reinforcing steel bar net on a well wall by using anchor rods, forming a primary supporting surface by spraying concrete on the reinforcing steel bar net under high pressure, and symmetrically installing two rows of first steel support structures (2) between the primary supporting surfaces perpendicular to the axis of a suspended vertical shaft for reinforcement and support; the mode of installing the first section steel supporting structure (2) is as follows: vertically installing section steel is sequentially arranged between the opposite primary support surfaces from top to bottom to serve as a reinforcing support; in addition, the section steel diagonal braces (3) are arranged at four corners of the primary supporting surface, and the section steel diagonal braces (3) are sequentially arranged from top to bottom;
S3: the well head ground of the vertical shaft (1) is hung as a hanging area, a bored pile (4) is driven underground in the hanging area to serve as a pile foundation, a bearing platform (5) is poured at the upper end ground of the bored pile (4), the bored pile (4) is arranged in a mode of 2 multiplied by 3, a pile head at the upper end of the bored pile (4) is chiseled off before the bearing platform (5) is constructed, cushion layer concrete is poured at the pile head chiseling area, reinforcing steel bars are bound on the cushion layer concrete, and the bearing platform (5) is directly poured for molding;
S4: construction of a section steel internal support system: vertical shaped steel purlin (6) are enclosed in installation on the primary support face, and steel pipe bearing structure (7) are used for strengthening and support between relative shaped steel purlin (6), specifically: the steel support structure comprises a steel purlin (6) which is pre-installed, a bracket (8) is fixedly installed at the lower end of the steel purlin (6) in an anchoring manner, the steel purlin (6) is fixedly installed on the bracket (8) in a supporting manner, a top suspension device is welded at the upper end of the steel purlin (6), the suspension device is welded by channel steel, the end part of the suspension device is fixed in a bearing platform (5) and the suspension device is required to be kept perpendicular to the steel purlin (6), the steel purlins (6) are respectively installed on primary supporting surfaces perpendicular to the axis of a hanging shaft, and steel pipe supporting structures (7) are installed between the opposite steel purlins (6);
s5: the crawler crane runs to the hoisting area, and the shield body of the shield machine is hoisted out in sequence from the hoisting vertical shaft (1).
2. The construction method for lifting a shield machine from a lifting shaft according to claim 1, wherein in the step S4, the steel pipe supporting structure (7) is a plurality of steel pipes, and the steel pipes are sequentially arranged and installed on the section steel purlin (6) from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210085080.XA CN114526076B (en) | 2022-01-25 | 2022-01-25 | Construction method for suspending shield machine from suspended vertical shaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210085080.XA CN114526076B (en) | 2022-01-25 | 2022-01-25 | Construction method for suspending shield machine from suspended vertical shaft |
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| CN114526076A CN114526076A (en) | 2022-05-24 |
| CN114526076B true CN114526076B (en) | 2024-10-25 |
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| CN114890308B (en) * | 2022-05-30 | 2025-09-16 | 安徽建筑大学 | Shield machine lifting method above existing underground structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111075452A (en) * | 2019-12-23 | 2020-04-28 | 重庆市轨道交通设计研究院有限责任公司 | Geotechnical mixed vertical shaft engineering supporting system and vertical shaft construction method |
| CN113669073A (en) * | 2021-09-23 | 2021-11-19 | 中铁二十局集团第五工程有限公司 | A construction method for controlling the deformation of adjacent buildings in water-rich sandy strata first tunnel and then station |
| CN113882390A (en) * | 2021-09-15 | 2022-01-04 | 深圳市综合交通设计研究院有限公司 | Subway tunnel construction shaft foundation pit supporting structure without inner support and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982188B (en) * | 2014-06-03 | 2017-01-04 | 中铁第一勘察设计院集团有限公司 | The supporting structure system of rocky stratum big cross section deep shaft and construction method thereof |
| JP5960787B2 (en) * | 2014-12-19 | 2016-08-02 | 植村 誠 | Shield machine removal method in open shield method |
| CN105421477A (en) * | 2015-09-06 | 2016-03-23 | 上海建工七建集团有限公司 | Construction method for tower crane foundation |
| CN109763827B (en) * | 2019-03-29 | 2019-12-10 | 中山大学 | Shaft shield construction method and shaft shield machine |
| CN214832726U (en) * | 2021-02-23 | 2021-11-23 | 武汉市政工程设计研究院有限责任公司 | Supporting structure for pipe-jacking working well in deep soft soil area |
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2022
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075452A (en) * | 2019-12-23 | 2020-04-28 | 重庆市轨道交通设计研究院有限责任公司 | Geotechnical mixed vertical shaft engineering supporting system and vertical shaft construction method |
| CN113882390A (en) * | 2021-09-15 | 2022-01-04 | 深圳市综合交通设计研究院有限公司 | Subway tunnel construction shaft foundation pit supporting structure without inner support and construction method |
| CN113669073A (en) * | 2021-09-23 | 2021-11-19 | 中铁二十局集团第五工程有限公司 | A construction method for controlling the deformation of adjacent buildings in water-rich sandy strata first tunnel and then station |
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