CN106498951B - A kind of shaft excavation construction method - Google Patents
A kind of shaft excavation construction method Download PDFInfo
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- CN106498951B CN106498951B CN201611089425.XA CN201611089425A CN106498951B CN 106498951 B CN106498951 B CN 106498951B CN 201611089425 A CN201611089425 A CN 201611089425A CN 106498951 B CN106498951 B CN 106498951B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
- E02D2250/0076—Drilling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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Abstract
The present invention provides a kind of shaft excavation construction methods, comprising the following steps: goes along with sb. to guard him ground wall construction；Vertical shaft shallow-layer excavates；It is filled the water in the vertical shaft for having completed shallow-layer excavation, and in water vertical shaft remainder is implemented to excavate in water；Shaft floor is poured, and utilizes the inwall of the buoyancy construction shaft of water in vertical shaft；Pour the inwall and the gap gone along with sb. to guard him between ground wall.The construction method combines floor structure using steel-concrete, solves the problems, such as ultra-deep shaft bottom plate and the common stress of supporting construction, and improve bottom plate anti-floating ability, while using the buoyancy of water and lifting device being combined to construct, and improves construction efficiency, reliable in quality；Secondly it solves the problems, such as required drawdown artesian water in Excavation Process using not dewatering excavation, and shortens the construction depth for going along with sb. to guard him ground wall, reduce construction risk.
Description
Technical field
The invention belongs to Foundation Pit Construction technical fields, are suitable for ultra-deep shaft engineering construction, relate generally to a kind of perpendicular
Well excavation construction method.
Background technique
There are many ultra-deep shaft structure construction problem at present, wherein being badly in need of being to solve deeper subsurface water process problem.Such as
Fruit will necessarily use precipitation excavation of foundation pit to shaft perimeter environmental effects, especially downtown area using dewatering measure,
Drop deep water in confined construction risk is big, and conventional measure is the method to be developed simultaneously using dewatering well, water seal curtain and recharge, but right
It constructs situation in special deep major diameter shaft structure, precipitation is big, and surrounding enviroment influence more prominent, in addition shaft floor and goes along with sb. to guard him ground
The common stress problem of wall is difficult to solve.
Summary of the invention
The purpose of the present invention is to provide a kind of shaft excavation construction method, to solve underground water during Construction of Silo
It influences, and solves shaft floor anti-floating and shaft structure construction problem.
In order to solve the above technical problems, the present invention provides a kind of shaft excavation construction method, comprising the following steps:
S1: ground wall construction is gone along with sb. to guard him；
S2: vertical shaft shallow-layer excavates；
S3: filling the water in the vertical shaft for having completed shallow-layer excavation, and real to remaining soil body part in vertical shaft foundation pit in water
Shi Shuizhong is excavated；
S4: shaft floor is poured, and utilizes the inwall of the buoyancy construction shaft of water in vertical shaft；
S5: the inwall and the gap gone along with sb. to guard him between ground wall are poured.
Optionally, the ground wall of going along with sb. to guard him is reinforced concrete structure, and the construction method of the reinforced concrete structure includes
Following steps:
Groove milling or trenching construction are carried out to slot fragment position where going along with sb. to guard him ground wall with chute forming machine or slotter；
Steel reinforcement cage is successively hung in slot, ground wall is gone along with sb. to guard him in casting concrete formation.
Optionally, after the S1 and before the S2 further include: the construction of tip circle beam；The tip circle beam is located at described enclose
The upper end Di Qiang is protected, and is fixed with the ground wall of going along with sb. to guard him.
Optionally, the construction method that the shallow-layer excavates is the following steps are included: using more excavators to the soil in vertical shaft
Body excavates.
Optionally, the construction method excavated in the water the following steps are included:
Steel truss is set in shaft top, and is sling the steel truss using lifting appliance, to control the position of steel truss
It sets；
It is filled to the lower section of the steel truss in vertical shaft, and grabs brill in vertical shaft foundation pit using hydraulic variable diameter drilling machine or punching
Implement to excavate in water in remaining soil body part.
Optionally, the steel truss is to weld the space truss structure formed, the space truss structure by several H profile steels
On be provided with several columns.
Optionally, the construction method for pouring shaft floor the following steps are included:
Respectively to the bottom of steel truss and peripheral side installation bottom template and side wall template；
It is layered in the bottom template and side wall template, is segmented casting concrete.
Optionally, the bottom template uses die mould punching block, is welded to form on the outside of the side wall template using steel plate assembly
Several pegs are arranged in the side wall template using annular creeping formwork in annular punching block, the side wall template inside.
Optionally, in the S4, inwall is poured section by section by the way of creeping formwork on the inside of vertical shaft foundation pit side wall.
Optionally, in the S4, the inwall, the thickness edge of the variable cross-section formwork are poured using variable cross-section formwork
The inwall is gradually increased from top to bottom.
Optionally, steel mesh and steel strand wires are installed before every section inwall pours in advance.
Optionally, in the S5, the gap point three steps filling between ground wall and inwall is gone along with sb. to guard him,
The first step, going along with sb. to guard him side corresponds to bottom plate bottom concrete position and structure base slab bottom injection cement grout within the walls
Form the first filled layer；
Steel reinforcement cage is being hung in the gap gone along with sb. to guard him between ground wall and variable cross-section inwall, and is being located at described first by second step
On filled layer；
Casting concrete forms the second filled layer into the steel reinforcement cage；
Third step, above second filled layer go along with sb. to guard him ground inner wall setting shearing resistance slot, and be put into steel reinforcement cage or
Steel truss casting concrete is to top beam.
Optionally, the depth bounds that the shallow-layer excavates are 12m-18m.
Have following in shaft excavation construction method provided by the invention the utility model has the advantages that being combined first using steel-concrete
The structure of the inwall of floor structure and variable cross-section solves the problems, such as ultra-deep shaft bottom plate and the common stress of inwall and bottom plate anti-floating
Ability, while shaft structure (including bottom plate and inwall) construction is constructed by the buoyancy and combination lifting device of water, raising is applied
Work efficiency rate, reliable in quality；Secondly required drawdown artesian water in Excavation Process is solved the problems, such as using not dewatering excavation,
Surrounding enviroment influence is minimized, particular for the excavation of urban central zone；Secondly, using not draining out
It digs, shortens the construction depth for going along with sb. to guard him ground wall, reduce the construction risk of deep gouge.
Detailed description of the invention
Fig. 1 is the flow chart of the shaft excavation construction method of one embodiment of the application；
Fig. 2 is the schematic diagram that one embodiment vertical shaft shallow-layer of the application excavates；
Fig. 3 is the schematic diagram of one embodiment vertical shaft steel truss of the application construction；
Fig. 4 is the schematic diagram excavated in one embodiment vertical shaft water of the application；
Fig. 5 is the schematic diagram after the completion of excavating in one embodiment vertical shaft water of the application to steel truss mounting base and side plate；
Fig. 6 and Fig. 7 is the construction schematic diagram of one embodiment vertical shaft inwall of the application；
Fig. 8 is the schematic diagram of one embodiment vertical shaft inwall integral sinking of the application；
Fig. 9 is one embodiment vertical shaft inwall of the application and the schematic diagram for going along with sb. to guard him gap construction between ground wall.
In figure: 1- goes along with sb. to guard him ground wall；11- top beam；2- inwall；The first filled layer of 21-；The second filled layer of 22-；23-
Three filled layers；The 3- soil body；4- steel truss；5- excavator；6- lifting appliance；7- hydraulic variable diameter drilling machine.
Specific embodiment
The core concept of the application is: not dropping applying for deep water in confined for using in ultra-deep shaft structure construction procedure
Work method, while by the buoyancy of water and lifting device construction shaft inwall is combined, improve construction efficiency, reliable in quality, solution
It has determined hydraulic balance inside and outside vertical shaft foundation pit, shaft perimeter environment has been influenced small；Secondly it going along with sb. to guard him is segmented between wall and inwall
Filling, and shear key is set in local location, solve the problems, such as ultra-deep shaft bottom plate and the common stress of supporting construction.
Shaft excavation construction method proposed by the present invention is made further specifically below in conjunction with the drawings and specific embodiments
It is bright.According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted that attached drawing is all made of
Very simplified form and use non-accurate ratio, only to it is convenient, lucidly aid in illustrating the mesh of the embodiment of the present invention
's.
Refering to fig. 1, the shaft excavation construction method flow chart for showing the present embodiment specifically includes that and goes along with sb. to guard him ground wall 1
Construction；Vertical shaft shallow-layer excavates；It is excavated in vertical shaft water；It constructs bottom plate, bottom plate is floated on the surface inner lining construction wall, finally segmentation is filled out
Fill the gap gone along with sb. to guard him between ground wall 1 and inwall 2.
Referring to Fig.2, it shows that the vertical shaft of the present embodiment after going along with sb. to guard him ground wall 1 and constructing, implements the signal that shallow-layer excavates
Figure.
Wherein, carry out the construction that vertical shaft goes along with sb. to guard him ground wall 1 first, vertical shaft wall 1 first with chute forming machine or slotter to going along with sb. to guard him
Ground wall chase section grooving, then hangs in the steel reinforcement cage made in slot, and ground wall 1 is gone along with sb. to guard him in casting concrete formation.Going along with sb. to guard him ground wall 1
Inside corresponds to substrate bottom concrete position setting tongue and groove shape steel plate, outer viscous water proof rubber material, and is arranged in suitable position
Slip casting extends watertight rubber capsule, in addition the default sealing Grouting Pipe of ground 1 seam areas of wall is being gone along with sb. to guard him, to prevent the infiltration of underground water
Enter.Optionally, slotter is the German treasured hydraulic two-wheel flute milling machine of Russia BC40.
Preferably, vertical shaft goes along with sb. to guard him the construction of progress top beam 11 after the completion of the ground construction of wall 1, goes along with sb. to guard him ground wall 1 to improve vertical shaft
Overall stiffness, reduce digging process in go along with sb. to guard him ground wall 1 deformation.Top beam 11 be located at go along with sb. to guard him ground wall 1 upper end and with go along with sb. to guard him
Ground wall 1 is fixed together, and the mode that optional armored concrete pours is realized.
Vertical shaft shallow-layer excavation is carried out after the completion of the construction of top beam 11, the depth bounds of the shallow-layer of vertical shaft are generally [12,18]
(can be according to local level of ground water situation appropriate adjustment), preferred depth be 15 meters.Shallow-layer, which excavates, uses dry excavation, i.e., not in vertical shaft
Interior water filling is directly excavated with the more cooperations of excavator 5.For convenience of explanation, with natural ground elevation for 0 position, shallow-layer here
Excavation is excavated to for the time being at -15 meters of vertical shaft.It is smaller to the Water And Earth Pressures for going along with sb. to guard him ground wall 1 by theoretical calculation, it goes along with sb. to guard him ground wall 1 and becomes
Shape is small, so construction is safer；In addition dry excavation construction is very fast, and the soil excavated is easy to handle, shortens to a certain extent
Duration.
Implement to excavate link in vertical shaft water.Excavating in water can be used hydraulic variable diameter drilling machine 7 and cooperates mud disposal system
It constructs, places hydraulic variable diameter drilling machine 7 for convenience, and consider construction of the later period to shaft floor, first progress steel truss 4
Construction, a part that steel truss 4 can be convenient placement hydraulic variable diameter drilling machine 7 and the later period constructs to shaft floor.Refering to Fig. 3,
It illustrates the schematic diagrames of the vertical shaft of the present embodiment installation steel truss 4.Lifting appliance 6 is placed in vertical shaft foundation pit periphery and slings steel truss
Frame 4, the plane of steel truss 4 are circle, are designed as 8 meters of height according to Force Calculation steel truss height, are welded and formed by several H profile steels
Space truss structure, steel truss 4 is mainly assembled by 8 truss structure beams, round edge have 16 steel pipe columns and a H profile steel welding and
At.Using crawler crane, 4 ends rest of steel truss after the completion of installation on ground, assembly on top beam and passes through hydraulic steel truss 4
It controls equipment 41 and lifts by crane steel truss 4, and fill water to 4 bottom of steel truss in foundation pit.
Referring to Fig. 4, it illustrates the schematic diagrames excavated in the vertical shaft water of the present embodiment；Two hydraulic variable diameter drilling machines 5 exist
The soil body of deeper 3 excavate in water on steel truss 4, and the mud of excavation is retracted to ground, and by mud conditioning system
System processing, mud disposal system can select BE250 mud disposal system.- 15 meters of soil bodys 3 below are excavated in water, are dug always
Locate to vertical shaft -73m, that is, complete and excavate part in water, and carry out deslagging, to vertical shaft bottom of foundation ditch and is gone along with sb. to guard him after having excavated
The 1 side wall scarfing cinder of ground wall, clear bottom.Also it can use punching and grab to bore and implement to excavate in water.
Then, being combined with construction bottom plate, inner lining construction wall 2, bottom plate here will finally sink to silo bottom, bottom plate section by section
For the overall structure after the casting concrete in steel truss 4.Firstly, bottom plate utilizes the structure of steel truss 4, to the bottom of steel truss 4
Portion, inside and outside side seal template, 4 bottom template of steel truss use steel bar girder profiled sheet, and 4 side wall panel outer steel formwork of steel truss uses
10mm thick steel plate assembly welding, and in the surfaces externally and internally of steel plate every identical spacing weld stud improves concrete and steel plate
Bond stress, steel plate are used as the permanent composition component (need not wait for concrete some strength after demoulding) in structure, inside
Creeping formwork.Refering to Fig. 4, it can be seen that the bottom template and side wall panel of steel truss are assembled good, and pour bottom in the template of bottom
Plate 2m pours side wall panel 8m, sinks in order to prevent, can prevent bottom using the buoyancy of water using the method for properly increasing water level
Plate sinks, if the buoyancy of water is inadequate, can promote bottom plate by lifting appliance 6 simultaneously.
Refering to Fig. 6, the construction of part inwall 2 is completed in figure, 2 section thickness of vertical shaft inwall is according to soil pressure point
Cloth situation uses variable cross-section formwork casting concrete, rationally economizes on resources, thus it is most thick below finally formed inwall 2,
Gradually thinning upwards in turn, 2 medial surface of inwall is vertical, and lateral surface is in the step type of certain slope.Therefore it can use liner
The stepped contact surface in 2 outside of wall increases the frictional force of inwall 2 and fill concrete, improves concrete bite force.
Bottom plate is gradually poured, until reaching certain thickness to base plate thickness, can choose and pour base plate thickness every time is 2m, is known
Road base plate thickness reaches 10m.Cooperation pours inwall 2 while pouring bottom plate.2 inside (shaft excavation face) of inwall, which uses, to be climbed
The mode of mould installs steel mesh and prestress steel twist before every section inwall 2 pours section by section to pouring under vertical shaft in advance
Line, to improve the rigidity of inwall 2.If buoyancy is greater than bottom plate to inwall 2 in downward work progress section by section and inwall 2 is whole
The self weight of body structure counterweight, counterweight mode can be the water filling auxiliary sinking in vertical shaft on bottom plate.
Refering to Fig. 7, it can be seen that at this moment the construction of inwall 2 makes bottom plate and inwall 2 whole already close to silo bottom
Structure is sunk, and refering to Fig. 8, illustrates intention for the shaft structure after sinking.At this time bottom plate has touched the soil body 3, but because
Inevitably there are some residues in silo bottom, still there is certain gap between the two.
Finally, segmentation pours the gap gone along with sb. to guard him between ground wall 1 and inwall 2.Referring to Fig. 9, going along with sb. to guard him ground wall 1 and inwall
Three steps of gap point between 2 pour.It is respectively the first filled layer 21, the second filled layer 22, third filled layer that three steps, which pour part,
23。
The construction method of first filled layer 21 be between to structural base sediment and soft layer grouting reinforcement.
The construction method of second filled layer 22 is successively to hang in the gap gone along with sb. to guard him between ground wall 1 and variable cross-section inwall 2
Steel reinforcement cage, then casting concrete consolidates again.Steel reinforcement cage, which is close to, goes along with sb. to guard him the ground sinking of wall 1, hangs over preparatory welding to prevent steel reinforcement cage
On the outside on the peg of punching block plate surface, and steel reinforcement cage section thickness is less than the width in gap, convenient for smoothly decentralization.
The construction method of third filled layer 23 is that will go along with sb. to guard him to draw water between ground wall 1 and inwall 2 to -15m, under construction personnel
Foundation pit carries out shearing resistance construction construction, and clears up ground wall shearing resistance slot, and casting concrete is arranged top beam 11 for inwall 2 and goes along with sb. to guard him ground
Wall 1 connects integral.So far, Construction of Silo terminates.
Shaft excavation construction method provided in this embodiment has following the utility model has the advantages that being combined first using steel-concrete
The structure of the inwall 2 of floor structure and variable cross-section solves the problems, such as special deep shaft bottom plate and goes along with sb. to guard him the ground common stress of wall 1 and bottom plate
Anti-floating ability, while shaft structure is constructed by the buoyancy and combination lifting device of water, improves construction efficiency, reliable in quality；Its
It is secondary to solve the problems, such as required drawdown artesian water in Excavation Process using not dewatering excavation, surrounding enviroment influence is down to
Minimum, particular for the excavation of urban central zone；Secondly, shortening using not dewatering excavation and going along with sb. to guard him ground wall 1
Construction depth reduces the construction risk of deep gouge.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (12)
1. a kind of shaft excavation construction method, which comprises the following steps:
S1: ground wall construction is gone along with sb. to guard him；
S2: vertical shaft shallow-layer excavates；
S3: filling the water in the vertical shaft for having completed shallow-layer excavation, and implements water to soil body part remaining in vertical shaft foundation pit in water
Middle excavation；
S4: pouring shaft floor, and the inwall of construction bottom plate construction shaft section by section is combined with using the buoyancy of water in vertical shaft,
In, bottom plate will finally sink to silo bottom, and bottom plate is the overall structure in steel truss after casting concrete:
After the bottom template and side wall panel for having spliced steel truss, part backplane, and casting side wall are poured in the template of bottom
Plate forms part inwall；
Bottom plate is gradually poured, until base plate thickness reaches certain thickness, cooperation pours inwall, inwall while pouring bottom plate
Inside is by the way of creeping formwork section by section to pouring under vertical shaft；
When the construction of inwall is close to silo bottom, so that bottom plate and inwall overall structure is sunk, make the contacts baseplate institute
The soil body of vertical shaft bottom of foundation ditch is stated, the construction of shaft floor and inwall is completed；
S5: the inwall and the gap gone along with sb. to guard him between ground wall are poured.
2. shaft excavation construction method as described in claim 1, which is characterized in that the ground wall of going along with sb. to guard him is armored concrete knot
Structure, the construction method of the reinforced concrete structure the following steps are included:
With chute forming machine or slotter carries out grooving to slot fragment position where going along with sb. to guard him ground wall or groove milling is constructed；
Steel reinforcement cage is successively hung in slot, ground wall is gone along with sb. to guard him in casting concrete formation.
3. shaft excavation construction method as claimed in claim 1 or 2, which is characterized in that after the S1 and the S2 it
Before further include: the construction of tip circle beam；The tip circle beam goes along with sb. to guard him the upper end Di Qiang described in being located at, and fixes with the ground wall of going along with sb. to guard him.
4. shaft excavation construction method as described in claim 1, which is characterized in that the construction method that the shallow-layer excavates includes
Following steps: using more excavators to the soil excavation in vertical shaft.
5. shaft excavation construction method as described in claim 1, which is characterized in that the construction method excavated in the water includes
Following steps:
Steel truss is set in shaft top, and is sling the steel truss using lifting appliance, to control the position of steel truss；
It is filled to the lower section of the steel truss in vertical shaft, and grabs brill to remaining in vertical shaft foundation pit using hydraulic variable diameter drilling machine or punching
Implement to excavate in water in soil body part.
6. shaft excavation construction method as claimed in claim 5, which is characterized in that the steel truss is to be welded by several H profile steels
The space truss structure to be formed is connect, several columns are provided on the space truss structure.
7. shaft excavation construction method as described in claim 1, which is characterized in that the construction method for pouring shaft floor
The following steps are included:
Respectively to the bottom of steel truss and peripheral side installation bottom template and side wall template；
It is layered in the bottom template and side wall template, is segmented casting concrete.
8. shaft excavation construction method as claimed in claim 7, which is characterized in that the bottom template uses die mould punching block,
Annular punching block is welded to form using steel plate assembly on the outside of the side wall template, annular creeping formwork is used on the inside of the side wall template, and
Several pegs are set in the side wall template.
9. shaft excavation construction method as described in claim 1, which is characterized in that in the S4, using variable cross-section formwork
The inwall is poured, the thickness of the variable cross-section formwork is gradually increased from top to bottom along the inwall.
10. shaft excavation construction method as described in claim 1, which is characterized in that installation in advance before every section inwall pours
Good steel mesh and steel strand wires.
11. shaft excavation construction method as described in claim 1, which is characterized in that in the S5, go along with sb. to guard him ground wall and inwall
Between gap point three steps filling,
The first step, going along with sb. to guard him side corresponds to bottom plate bottom concrete position within the walls and structure base slab bottom injection cement grout is formed
First filled layer；
Steel reinforcement cage is being hung in the gap gone along with sb. to guard him between ground wall and variable cross-section inwall by second step, and is located at first filling
On layer；
Casting concrete forms the second filled layer into the steel reinforcement cage；
Third step goes along with sb. to guard him ground inner wall setting shearing resistance slot above second filled layer, and is put into steel reinforcement cage or steel truss
Frame casting concrete is to top beam.
12. shaft excavation construction method as described in claim 1, which is characterized in that the depth bounds that the shallow-layer excavates are
12m-18 m。
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| CN108118728B (en) * | 2017-12-29 | 2023-01-24 | 上海建工集团股份有限公司 | Efficient soil excavating device and method for special-shaped deep foundation pit |
| CN114396284A (en) * | 2022-01-17 | 2022-04-26 | 上海市基础工程集团有限公司 | Reverse construction method for circular shaft impervious wall |
| CN114606905B (en) * | 2022-04-10 | 2023-04-25 | 金华市恒通工程检测有限公司 | Fastening treatment device for hydraulic engineering maintenance and treatment method thereof |
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| JP3850785B2 (en) * | 2002-10-15 | 2006-11-29 | 東日本旅客鉄道株式会社 | Caisson laying method using main foundation pile |
| CN102322069B (en) * | 2011-07-04 | 2013-09-04 | 浙江省交通规划设计研究院 | Underwater combination base of open caisson and steel pipe piles and construction method |
| CN102888847B (en) * | 2012-10-19 | 2014-12-24 | 中国二十二冶集团有限公司 | Construction method free from lowering water level for local deep foundation pit of elevator shaft |
| CN104695456B (en) * | 2015-03-27 | 2017-01-18 | 济南轨道交通集团有限公司 | Construction method vertical shaft horizontal rotation jet grouting pile foundation pit lateral wall water stopping curtain |
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