CN109469051A - The construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area - Google Patents
The construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area Download PDFInfo
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- CN109469051A CN109469051A CN201811250599.9A CN201811250599A CN109469051A CN 109469051 A CN109469051 A CN 109469051A CN 201811250599 A CN201811250599 A CN 201811250599A CN 109469051 A CN109469051 A CN 109469051A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
Construction of manual-excavation cast-in-place pile technique that the invention discloses one kind in weak-weathered rock or middle weathering formation area, the present invention is in weak-weathered rock or middle weathered rock formation, using the method for water mill drilling cutting rock stratum, successfully solve the problem that surrounding enviroment and job scheduling are restricted, both the driving needs of artificial digging pile had been met, the shock wave effect for eliminate or reducing shot rock generation, also improves the driving speed of artificial digging pile, saves the consumption of labour.
Description
Technical field
The present invention relates to a kind of in weak-weathered rock or middle weathering formation area using drilling cutting rock stratum excavation operation
Construction of manual-excavation cast-in-place pile technique, it is specifically a kind of in weak-weathered rock or middle weathered rock formation, it is bored with water mill along manually digging hole
Stake carries out the construction of manual-excavation cast-in-place pile technique that circular drilling ring cutting from beginning to end cuts shock wave conduction.
Background technique
Under the big situation for the energy-saving and emission-reduction that the whole world is initiated, construction field has started the revolution of green building, its main feature is that
Four sections (it is energy saving, water-saving, section material, save land) one environmental protection.Numerous builders in construction plan, pay attention to intensive land use, sufficiently benefit
Building site etc. is discarded with being transformed, therefore, in process of construction, it is necessary to show important to the protection In-particular of existing building.
When carrying out headwork in weak-weathered rock or middle weathering formation area, conventional tunneling construction method is to utilize hand
It holds formula pneumatic pick and carries out drillhole blasting driving.Method operating procedure is mature, detonation velocity is fast, work efficiency is high for this, but the impact that explosion generates
Wave influences whether the safety of Adjacent Buildings, or even will cause neighbourhood and claim damages dispute etc..In order to efficiently against Blasting shock wave
Influence to neighboring buildings；Therefore, it is suitable for carrying out manually in weak-weathered rock or middle weathering formation area there is an urgent need to one kind
The construction method of caisson driving solves the above problems.
Summary of the invention
The purpose of the present invention is to provide one kind in weak-weathered rock or middle weathering formation area, and manually digging hole filling pile is applied
Work technique.
The technical solution adopted by the present invention is that:
The construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area, it is characterised in that: including following step
It is rapid:
S1: GPS total station, GPC total station measuring staff composition measuring apparatus system are utilized, artificial digging pile center line is made；
S2: in the position of artificial digging pile well head, the steel bar end of binding walling crib framework of steel reinforcement and reserved man-made digging pile mould-pipe,
Install walling crib template；
S3: after removing cast-in-place concrete walling crib template, complete armored concrete walling crib is formed；Hoisting frame, peace are installed at walling crib
Dress air blower installs air hose and is connected to artificial digging pile shoveling or rock drilling working face；Walling crib and excavated by manual work are manually dug out by several times
The earthwork in the stake of hole, and it is stacked at well head mound nearby；It is to be achieved it is a certain amount of after, transported outward with automobile；First segment artificial digging pile
After the completion of earth excavation, artificial digging pile inner wall and bottom hole are cleared up immediately, binds first segment retaining wall reinforcing bar, and it is reserved to reserve second segment
Retaining wall reinforcing bar installs first segment dado template, pours first segment breast wall concrete, removes first segment dado template, forms first
Section reinforced concrete core-tube；After the completion of second segment artificial digging pile earth excavation, artificial digging pile inner wall and bottom hole are cleared up immediately,
Second segment retaining wall reinforcing bar is bound, third section is reserved and reserves retaining wall reinforcing bar, install second segment dado template, it is mixed to pour second segment retaining wall
Solidifying soil, removes second segment dado template, forms the second segment reinforced concrete core-tube of completion；The third section artificial digging pile earthwork is opened
After the completion of digging, artificial digging pile inner wall and bottom hole are cleared up immediately, binds third section retaining wall reinforcing bar, reserve the 4th section of reserved retaining wall steel
Muscle installs third section dado template, pours third section breast wall concrete；
S4: circulation construction successively carries out next section of shoveling, binding retaining wall reinforcing bar, installs dado template, pours retaining wall coagulation
Soil；
S5: removing dado template, form complete reinforced concrete core-tube, encounter weak-weathered rock or middle weathered rock formation, first presses people
The control line of work caisson periphery marks the production line of the drilling cutting rock stratum of water mill brill；
S6: the production line along the drilling cutting rock stratum for marking water mill brill, drilling depth is 600 ㎜, and is connected to form between drilling complete
Cutting rock stratum ring；After cutting rock stratum ring is formed, internal rock stratum is then divided into several fritters using electric hand drill, is arranged with well head
Internal rock stratum is hoisted to well head, and stacks and form rock slag by elevator, it is to be achieved it is a certain amount of after, transported outward with automobile；Rock stratum
After the completion of one section of artificial digging pile rock slag is cleared, rock stratum section accesses air hose for the first time, binds rock stratum first segment retaining wall reinforcing bar, in advance
Rock stratum second segment retaining wall reinforcing bar is stayed, rock stratum first segment dado template is installed, pours rock stratum first segment breast wall concrete, removes rock stratum
First segment dado template forms reinforced concrete core-tube；Second of access of rock stratum section is along the drilling cutting rock stratum for marking water mill brill
Production line, drilling depth is 600 ㎜, and complete cutting rock stratum ring is connected to form between drilling, using electric hand drill by internal rock stratum
It is divided into several fritters, internal rock stratum is hoisted to well head, and stacks and form rock slag by the elevator being arranged with well head, wait reach
It to after a certain amount of, is transported outward with automobile, after the completion of rock stratum second segment artificial digging pile rock slag is cleared, binds rock stratum second segment retaining wall
Reinforcing bar reserves rock stratum third section retaining wall reinforcing bar, installs rock stratum second segment dado template, pour rock stratum second segment breast wall concrete；
Rock stratum second segment dado template is removed, second segment reinforced concrete core-tube is formed；Rock stratum section third time access ventilation, water is marked on edge
The production line of the drilling cutting rock stratum of abrasive drilling, drilling depth is 600 ㎜, and complete cutting rock stratum ring is connected to form between drilling, and is cut
After cutting rock stratum formation ring, internal rock stratum is divided into several fritters using electric hand drill by internal rock stratum；The elevator being arranged with well head,
Internal rock stratum is hoisted to well head, and stacks and forms rock slag, it is to be achieved it is a certain amount of after, transported outward with automobile, rock stratum third section people
After the completion of work caisson rock slag is cleared, rock stratum third section retaining wall reinforcing bar is bound, the 4th section of rock stratum retaining wall reinforcing bar is reserved, installs rock
Layer third section dado template, pours rock stratum third section breast wall concrete, removes rock stratum third section dado template, forms third Duan Gang
Reinforced concrete retaining wall；
S7: circulation construction successively carries out the shoveling of lower section of rock stratum, binding retaining wall reinforcing bar, installs dado template, it is mixed to pour retaining wall
Solidifying soil, until artificial digging pile bottom reaches designed elevation.
S8: removing rock stratum final stage dado template, form the reinforced concrete core-tube of completion, after being checked and accepted by management,
Decentralization is poured by framework of steel reinforcement, the steel reinforcement cage suspension hook, the exhaust manifolds being attached on skeleton of the artificial digging pile checked and accepted, installation
The conduit of concrete works pours the concrete of artificial digging pile, until manually digging hole stake top reaches designed elevation.
Advantages of the present invention: in weak-weathered rock or middle weathered rock formation, the method that rock stratum is cut using water mill drilling, at
It solves the problems, such as to function that surrounding enviroment and job scheduling are restricted, has both met the driving needs of artificial digging pile, eliminate
Or reduce the shock wave effect of shot rock generation, the driving speed of artificial digging pile is also improved, saves labour's
Consumption.
Detailed description of the invention
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is that figure is completed in artificial digging pile of the present invention positioning；
Fig. 2 is artificial digging pile walling crib reinforcing bar of the present invention, template construction completion figure；
Fig. 2-1 is the top view of Fig. 2；
Fig. 3 is artificial digging pile soil layer section retaining wall reinforcing bar of the present invention, template, concrete construction completion figure；
Fig. 3-1 is the top view of Fig. 3；
Fig. 4 is that figure is completed in artificial digging pile rock stratum section of the present invention punching construction；
Fig. 4-1 is the top view of Fig. 4；
Fig. 5 is manually digging hole rock stratum section retaining wall reinforcing bar of the present invention, template construction completion figure；
Fig. 5-1 is the top view of Fig. 5；
Fig. 6 is that artificial digging pile steel reinforcement cage of the present invention is installed figure；
Fig. 6-1 is the top view of Fig. 6；
Fig. 7 is artificial digging pile concrete construction figure of the present invention；
Fig. 7-1 is the top view of Fig. 7；.
Wherein: 1, GPS total station；2, GPC total station measuring staff；3, artificial digging pile center line；4, well head；5, walling crib reinforcing bar
Skeleton；6, steel bar end；7, walling crib template；8, walling crib；9, hoisting frame；10, air blower；11, air hose；12, control line；13, native
Heap；14, retaining wall reinforcing bar；15, retaining wall reinforcing bar is reserved；16, dado template；17, retaining wall；18, production line；19, rock stratum ring；20, interior
Portion rock stratum；21, rock slag；22, first segment retaining wall reinforcing bar；23, second segment retaining wall reinforcing bar；24, third section dado template；25, steel
Reinforced concrete retaining wall；26, framework of steel reinforcement；27, steel reinforcement cage suspension hook；28, exhaust manifolds；29, conduit；30, concrete.
Specific embodiment
As shown in figs. 1-7, the construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area, including with
Lower step:
S1: GPS total station 1,2 composition measuring apparatus system of GPC total station measuring staff are utilized, artificial digging pile center line 3 is made；
S2: in the position of artificial digging pile well head 4, the reinforcing bar of walling crib framework of steel reinforcement 5 and reserved man-made digging pile mould-pipe is bound
First 6, walling crib template 7 is installed；
S3: after removing cast-in-place concrete walling crib template 7, forming complete armored concrete walling crib 8, installed at walling crib hoisting frame 9,
Installation air blower 10, installation air hose 11 are simultaneously connected to artificial digging pile shoveling or rock drilling working face；By several times manually dig out walling crib and
The earthwork in artificial digging pile, and it is stacked at well head mound 13 nearby；It is to be achieved it is a certain amount of after, transported outward with automobile；First segment people
After the completion of work caisson earth excavation, artificial digging pile inner wall and bottom hole are cleared up immediately, binds first segment retaining wall reinforcing bar 14, are reserved
Second segment reserves retaining wall reinforcing bar 15, installs first segment dado template 16, pours first segment breast wall concrete, removes first segment retaining wall
Template 16 forms first segment reinforced concrete core-tube 17；After the completion of second segment artificial digging pile earth excavation, cleaning is artificial immediately
Caisson inner wall and bottom hole bind second segment retaining wall reinforcing bar 14, reserve third section and reserve retaining wall reinforcing bar 15, install second segment retaining wall
Template 16 pours second segment breast wall concrete, removes second segment dado template 16, forms the second segment armored concrete shield of completion
Wall 17；After the completion of third section artificial digging pile earth excavation, artificial digging pile inner wall and bottom hole, binding third section shield are cleared up immediately
Wall reinforcing bar 14 reserves the 4th section of reserved retaining wall reinforcing bar 15, installs third section dado template 16, pour third section breast wall concrete；
S4: circulation construction successively carries out next section of shoveling, binding retaining wall reinforcing bar, installs dado template, pours retaining wall coagulation
Soil；
S5: removing dado template, form complete reinforced concrete core-tube, encounter weak-weathered rock or middle weathered rock formation, first presses people
The control line 12 of work caisson periphery marks the production line 18 of the drilling cutting rock stratum of water mill brill；
S6: the production line 18 along the drilling cutting rock stratum for marking water mill brill, drilling depth are 600 ㎜, and have been connected to form between drilling
Whole cutting rock stratum ring 19；After cutting the formation of rock stratum ring 19, internal rock stratum 20 is then divided into several fritters using electric hand drill, uses well
The elevator 9 of mouthful setting, is hoisted to well head for internal rock stratum, and stack and form rock slag 21, it is to be achieved it is a certain amount of after, use automobile
Outward transport；After the completion of rock stratum first segment artificial digging pile rock slag is cleared, rock stratum section accesses air hose 11 for the first time, binds rock stratum first
Section retaining wall reinforcing bar 22, reserves rock stratum second segment retaining wall reinforcing bar 23, installs rock stratum first segment dado template, pours rock stratum first segment shield
Wall concrete removes rock stratum first segment dado template, forms reinforced concrete core-tube 25；Mark water in second of access edge of rock stratum section
The production line 18 of the drilling cutting rock stratum of abrasive drilling, drilling depth is 600 ㎜, and complete cutting rock stratum ring is connected to form between drilling
19, internal rock stratum 20 is divided into several fritters using electric hand drill, the elevator 9 being arranged with well head, by internal 20 handling of rock stratum
To well head, and stack and form rock slag 21, it is to be achieved it is a certain amount of after, transported outward with automobile, rock stratum second segment artificial digging pile rock
After the completion of slag is cleared, rock stratum second segment retaining wall reinforcing bar 23 is bound, reserves rock stratum third section retaining wall reinforcing bar, installs rock stratum second segment shield
Wall form pours rock stratum second segment breast wall concrete, removes rock stratum second segment dado template, forms second segment armored concrete shield
Wall 25；Rock stratum section third time access ventilation, the production line 18 along the drilling cutting rock stratum for marking water mill brill, drilling depth is 600 ㎜,
And completely cutting rock stratum ring 19 is connected to form between drilling, after cutting rock stratum forms ring, internal rock stratum 20 will be interior using electric hand drill
Portion rock stratum is divided into several fritters；Internal rock stratum is hoisted to well head, and stacks and form rock by the elevator 9 being arranged with well head
Slag 21, it is to be achieved it is a certain amount of after, transported outward with automobile, after the completion of rock stratum third section artificial digging pile rock slag is cleared, bind rock stratum
Third section retaining wall reinforcing bar reserves the 4th section of rock stratum retaining wall reinforcing bar, installs rock stratum third section dado template 24, pour rock stratum third section
Breast wall concrete removes rock stratum third section dado template, forms third section reinforced concrete core-tube 25；
S7: circulation construction successively carries out the shoveling of lower section of rock stratum, binding retaining wall reinforcing bar, installs dado template, it is mixed to pour retaining wall
Solidifying soil, until artificial digging pile bottom reaches designed elevation.
S8: removing rock stratum final stage dado template, form the reinforced concrete core-tube of completion, after being checked and accepted by management,
Decentralization is by framework of steel reinforcement 26, the steel reinforcement cage suspension hook 27, the exhaust manifolds 28 being attached on skeleton of the artificial digging pile checked and accepted, peace
The conduit 29 for filling casting concrete engineering, pours the concrete 30 of artificial digging pile, until manually digging hole stake top reaches design mark
It is high.
The present invention, using the method for water mill drilling cutting rock stratum, successfully solves in weak-weathered rock or middle weathered rock formation
The problem that surrounding enviroment of having determined and job scheduling are restricted both had met the driving needs of artificial digging pile, eliminates or reduces
The shock wave effect that shot rock generates, also improves the driving speed of artificial digging pile, saves the consumption of labour.
Claims (1)
1. the construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area, it is characterised in that: including following
Step:
S1: GPS total station, GPC total station measuring staff composition measuring apparatus system are utilized, artificial digging pile center line is made；
S2: in the position of artificial digging pile well head, the steel bar end of binding walling crib framework of steel reinforcement and reserved man-made digging pile mould-pipe,
Install walling crib template；
S3: after removing cast-in-place concrete walling crib template, complete armored concrete walling crib is formed；Hoisting frame, peace are installed at walling crib
Dress air blower installs air hose and is connected to artificial digging pile shoveling or rock drilling working face；Walling crib and excavated by manual work are manually dug out by several times
The earthwork in the stake of hole, and it is stacked at well head mound nearby；It is to be achieved it is a certain amount of after, transported outward with automobile；First segment artificial digging pile
After the completion of earth excavation, artificial digging pile inner wall and bottom hole are cleared up immediately, binds first segment retaining wall reinforcing bar, and it is reserved to reserve second segment
Retaining wall reinforcing bar installs first segment dado template, pours first segment breast wall concrete, removes first segment dado template, forms first
Section reinforced concrete core-tube；After the completion of second segment artificial digging pile earth excavation, artificial digging pile inner wall and bottom hole are cleared up immediately,
Second segment retaining wall reinforcing bar is bound, third section is reserved and reserves retaining wall reinforcing bar, install second segment dado template, it is mixed to pour second segment retaining wall
Solidifying soil, removes second segment dado template, forms the second segment reinforced concrete core-tube of completion；The third section artificial digging pile earthwork is opened
After the completion of digging, artificial digging pile inner wall and bottom hole are cleared up immediately, binds third section retaining wall reinforcing bar, reserve the 4th section of reserved retaining wall steel
Muscle installs third section dado template, pours third section breast wall concrete；
S4: circulation construction successively carries out next section of shoveling, binding retaining wall reinforcing bar, installs dado template, pours retaining wall coagulation
Soil；
S5: removing dado template, form complete reinforced concrete core-tube, encounter weak-weathered rock or middle weathered rock formation, first presses people
The control line of work caisson periphery marks the production line of the drilling cutting rock stratum of water mill brill；
S6: the production line along the drilling cutting rock stratum for marking water mill brill, drilling depth is 600 ㎜, and is connected to form between drilling complete
Cutting rock stratum ring；After cutting rock stratum ring is formed, internal rock stratum is then divided into several fritters using electric hand drill, is arranged with well head
Internal rock stratum is hoisted to well head, and stacks and form rock slag by elevator, it is to be achieved it is a certain amount of after, transported outward with automobile；Rock stratum
After the completion of one section of artificial digging pile rock slag is cleared, rock stratum section accesses air hose for the first time, binds rock stratum first segment retaining wall reinforcing bar, in advance
Rock stratum second segment retaining wall reinforcing bar is stayed, rock stratum first segment dado template is installed, pours rock stratum first segment breast wall concrete, removes rock stratum
First segment dado template forms reinforced concrete core-tube；Second of access of rock stratum section is along the drilling cutting rock stratum for marking water mill brill
Production line, drilling depth is 600 ㎜, and complete cutting rock stratum ring is connected to form between drilling, using electric hand drill by internal rock stratum
It is divided into several fritters, internal rock stratum is hoisted to well head, and stacks and form rock slag by the elevator being arranged with well head, wait reach
It to after a certain amount of, is transported outward with automobile, after the completion of rock stratum second segment artificial digging pile rock slag is cleared, binds rock stratum second segment retaining wall
Reinforcing bar reserves rock stratum third section retaining wall reinforcing bar, installs rock stratum second segment dado template, pour rock stratum second segment breast wall concrete；
Rock stratum second segment dado template is removed, second segment reinforced concrete core-tube is formed；Rock stratum section third time access ventilation, water is marked on edge
The production line of the drilling cutting rock stratum of abrasive drilling, drilling depth is 600 ㎜, and complete cutting rock stratum ring is connected to form between drilling, and is cut
After cutting rock stratum formation ring, internal rock stratum is divided into several fritters using electric hand drill by internal rock stratum；The elevator being arranged with well head,
Internal rock stratum is hoisted to well head, and stacks and forms rock slag, it is to be achieved it is a certain amount of after, transported outward with automobile, rock stratum third section people
After the completion of work caisson rock slag is cleared, rock stratum third section retaining wall reinforcing bar is bound, the 4th section of rock stratum retaining wall reinforcing bar is reserved, installs rock
Layer third section dado template, pours rock stratum third section breast wall concrete, removes rock stratum third section dado template, forms third Duan Gang
Reinforced concrete retaining wall；
S7: circulation construction successively carries out the shoveling of lower section of rock stratum, binding retaining wall reinforcing bar, installs dado template, it is mixed to pour retaining wall
Solidifying soil, until artificial digging pile bottom reaches designed elevation；
S8: removing rock stratum final stage dado template, form the reinforced concrete core-tube of completion, after being checked and accepted by management, decentralization
The framework of steel reinforcement of artificial digging pile by examination, steel reinforcement cage suspension hook, the exhaust manifolds being attached on skeleton, installation pour coagulation
The conduit of geotechnological journey pours the concrete of artificial digging pile, until manually digging hole stake top reaches designed elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250599.9A CN109469051A (en) | 2018-10-25 | 2018-10-25 | The construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250599.9A CN109469051A (en) | 2018-10-25 | 2018-10-25 | The construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area |
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| Publication Number | Publication Date |
|---|---|
| CN109469051A true CN109469051A (en) | 2019-03-15 |
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ID=65666187
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811250599.9A Pending CN109469051A (en) | 2018-10-25 | 2018-10-25 | The construction of manual-excavation cast-in-place pile technique in weak-weathered rock or middle weathering formation area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112170A (en) * | 2020-09-18 | 2020-12-22 | 中铁济南工程建设监理有限公司 | Construction process for manually digging hole and pouring pile in weakly weathered rock or moderately weathered rock stratum area |
| CN113482013A (en) * | 2021-07-12 | 2021-10-08 | 中国水电建设集团十五工程局有限公司 | Manual hole digging construction method for cast-in-place pile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381868A (en) * | 2016-09-06 | 2017-02-08 | 中交第航务工程局有限公司 | Water abrasive drilling construction method for manual hole digging pile |
-
2018
- 2018-10-25 CN CN201811250599.9A patent/CN109469051A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381868A (en) * | 2016-09-06 | 2017-02-08 | 中交第航务工程局有限公司 | Water abrasive drilling construction method for manual hole digging pile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112170A (en) * | 2020-09-18 | 2020-12-22 | 中铁济南工程建设监理有限公司 | Construction process for manually digging hole and pouring pile in weakly weathered rock or moderately weathered rock stratum area |
| CN112112170B (en) * | 2020-09-18 | 2021-09-07 | 中铁济南工程建设监理有限公司 | Construction process for manually digging hole and pouring pile in weakly weathered rock or moderately weathered rock stratum area |
| CN113482013A (en) * | 2021-07-12 | 2021-10-08 | 中国水电建设集团十五工程局有限公司 | Manual hole digging construction method for cast-in-place pile |
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Application publication date: 20190315 |