CN107142924A - Construction method of underground continuous wall in a kind of deep light weathered granite - Google Patents
Construction method of underground continuous wall in a kind of deep light weathered granite Download PDFInfo
- Publication number
- CN107142924A CN107142924A CN201710300958.6A CN201710300958A CN107142924A CN 107142924 A CN107142924 A CN 107142924A CN 201710300958 A CN201710300958 A CN 201710300958A CN 107142924 A CN107142924 A CN 107142924A
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- Prior art keywords
- pilot hole
- construction
- drilling
- rock stratum
- wall
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Classifications
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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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
Abstract
The invention discloses construction method of underground continuous wall in a kind of deep light weathered granite, comprise the following steps：Carry out guide wall of underground continuous wall construction；Divide groove section and determine the orientation of pilot hole and pretreatment drilling；Drilling construction is carried out according to pretreatment drilling；Carried out rushing in construction according to pilot hole；Trenching construction；Injection reinforced anchor bolt makes it be embedded in rock stratum, and overcoat steel bushing；Reinforcing bar cage hoisting simultaneously carries out concrete pouring construction.Construction method of underground continuous wall of the present invention, carries out drilling construction in advance, and precrushing processing is carried out to rock stratum, and reduction subsequently rushes in punched hole construction difficulty；Moreover, being embedded in rock stratum certain depth by reinforced anchor bolt, constitute diaphram wall and hang leg structure form, depth of the lower diaphragm wall in rock stratum grooving can be effectively reduced.
Description
Technical field
The present invention relates to Diaphragm Wall field, diaphram wall in more particularly to a kind of deep light weathered granite
Construction method.
Background technology
Current diaphram wall makees the building enclosure of deep basal pit, vibrates that small, noise is low during with construction, takes up an area less, wall
The advantages of rigidity is big, barrier performance is good, is used widely in underground support engineering.
In continuous wall trench underground work progress, when rock stratum is shallower, when encountering the sials such as gentle breeze, it is difficult to kata-rocks
Stone, causes construction speed slow, the problems such as equipment loss is serious.It is commonly designed and requires that diaphragm wall has certain below foundation ditch bottom
Building-in depth, cause wall bottom to enter that rock depth big, reinforcing bar and concrete amount be big, pore-forming card hammer frequently, perpendicularity deviation it is larger, into
The problems such as this is high, long in time limit.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high, the safe and reliable deep gentle breeze Hua Hua hilllocks of efficiency of construction
Construction method of underground continuous wall in rock.
To solve the technical scheme that above-mentioned technical problem is used：Diaphram wall is applied in a kind of deep light weathered granite
Work method, comprises the following steps：
S1, guide wall of underground continuous wall construction；
S2, the groove section for the diaphram wall for treating digging are divided, and determine the position of pilot hole, pilot hole is continuous along underground
Wall direction interleaved is divided into main pilot hole, auxiliary pilot hole, and the position of pretreatment drilling is determined in the region of pilot hole；
S3, the orientation drilled by core-drill(ing) machine according to pretreatment carry out drilling construction to carry out at precrushing rock stratum
Reason；
S4, by block stamp according to the orientation of pilot hole carry out rush in construction, at interval of a main pilot hole dominated to
Hole drilling construction, is completed after whole main pilot hole drilling constructions, and carrying out auxiliary pilot hole pore-forming at interval of an auxiliary pilot hole applies
Work, is completed after whole auxiliary pilot hole drilling constructions, carries out repairing slotted eye construction between main pilot hole and auxiliary pilot hole one by one；
S5, trenching construction carried out by grab claw；
S6, injection reinforced anchor bolt make its insertion rock stratum reach desired depth, and reinforced anchor bolt top is higher by rock stratum preset distance,
In reinforced anchor bolt overcoat steel loading sleeve；
S7, reinforcing bar cage hoisting simultaneously carry out concrete pouring construction.
Further, it is distributed in three pretreatment drillings, auxiliary pilot hole and is spaced laterally apart in isosceles triangle in main pilot hole
Two pretreatment drillings.
Beneficial effect：In this deep light weathered granite in construction method of underground continuous wall, led in advance using core-drill(ing) machine
The pretreatment drilling for crossing arrangement carries out drilling construction, carries out precrushing processing to rock stratum, is conducive to follow-up punching of rushing in, reduces
Difficulty of construction；Moreover, being embedded in rock stratum certain depth by reinforced anchor bolt, constitute diaphram wall and hang leg structure form, can have
Effect reduces depth of the diaphram wall in rock stratum grooving, and locks pin by diaphram wall foundation anchor pole, keeps supporting stable, drop
Low difficulty of construction, effectively controls the construction period into rock grooving and engineering cost.
Brief description of the drawings
The present invention is described further with reference to the accompanying drawings and examples；
Fig. 1 be the embodiment of the present invention in treat digging diaphram wall hole position distribution plan；
Fig. 2 is the sectional view of diaphram wall of the embodiment of the present invention.
Embodiment
Referring to Figures 1 and 2, construction method of underground continuous wall in a kind of deep light weathered granite of the present invention, including following
Step：
S1, carry out guide wall of underground continuous wall construction first, lead wall by normal excavations, reinforcing bar, formwork, pour concrete and foster
The construction such as shield.
S2, the groove section for the diaphram wall for treating digging are divided, and determine the position of pilot hole, pilot hole is continuous along underground
Wall direction interleaved is divided into main pilot hole 1, auxiliary pilot hole 2, and the position of pretreatment drilling 4 is determined in the region of pilot hole
Put, wherein, interior be distributed in isosceles triangle in three pretreatment drillings 4, auxiliary pilot hole 2 of main pilot hole 1 is spaced laterally apart two in advance
Processing drilling 4, the aperture of pretreatment drilling 4 is 100mm.
S3, the orientation drilled by core-drill(ing) machine according to pretreatment carry out drilling construction to carry out at precrushing rock stratum 5
Reason, during drilling construction, with mud is got ready, during through soil layer, the sleeve pipe of guard aperture should be placed when meeting bad nature of soil, notes keeping vertical
Degree, it is to avoid drilling deviates from situations such as pilot hole scope or coincidence.Drilling depth presses the whole hole absolute altitude of diaphram wall of design, such as
Can appropriate slightly 0.5 meter or so of ultra-deep when rock stratum is harder, globality is preferable.Pretreatment drilling construction rushes in construction with pilot hole
Carried out by continuous productive process.In whole working face, first the pretreatment of the pilot hole domestic demand pretreatment in whole groove section is drilled all
After the completion of preboring, meet working position rear and start pilot hole and rush in construction.
S4, by block stamp according to the orientation of pilot hole carry out rush in construction, at interval of a main pilot hole dominated to
Hole drilling construction, is completed after whole main pilot hole drilling constructions, and carrying out auxiliary pilot hole pore-forming at interval of an auxiliary pilot hole applies
Work, is completed after whole auxiliary pilot hole drilling constructions, carries out repairing slotted eye construction between main pilot hole and auxiliary pilot hole one by one.
S5, trenching construction carried out by grab claw.
S6, injection reinforced anchor bolt 6 make its insertion rock stratum 5 reach desired depth, and the top of reinforced anchor bolt 6 is higher by rock stratum 5 and made a reservation for
Distance, in the overcoat steel loading sleeve 7 of reinforced anchor bolt 6, wherein it is preferred to, rock stratum top surface 2m, steel bushing choosing are higher by the top of reinforced anchor bolt
With a diameter of 800mm steel pipe, steel bushing top at the top of diaphram wall with flushing.
S7, reinforcing bar cage hoisting simultaneously carry out concrete pouring construction.
Construction method of underground continuous wall of the present invention, is being needed to rush at the hole position of construction, is being passed through in advance using core-drill(ing) machine
The pretreatment drilling of arrangement carries out drilling construction, carries out precrushing processing to rock stratum, is on the one hand the broken journey for improving rock stratum
Degree, is on the other hand when rushing in construction to follow-up pilot hole, to have free face in rock stratum, can change rock mass lateral spacing condition, make rock mass
Impact resistance is reduced, and improves the progress of block stamp punching, reduces the loss of plant equipment.Meanwhile, before diaphram wall is poured,
By arranging reinforced anchor bolt and it is embedded in rock stratum certain depth, constitute diaphram wall and hang leg structure form, can effectively subtract
Few diaphram wall effectively controls the construction period into rock grooving and engineering cost in the depth of rock stratum grooving.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the invention is not restricted to above-mentioned embodiment party
Formula, can also be before present inventive concept not be departed from the knowledge that the technical field those of ordinary skill possesses
Put that various changes can be made.
Claims (2)
1. construction method of underground continuous wall in a kind of deep light weathered granite, it is characterised in that comprise the following steps：
S1, guide wall of underground continuous wall construction；
S2, the groove section for the diaphram wall for treating digging are divided, and determine the position of pilot hole, and pilot hole is along diaphram wall side
Main pilot hole, auxiliary pilot hole are divided into interleaved, the position of pretreatment drilling is determined in the region of pilot hole；
S3, the orientation drilled by core-drill(ing) machine according to pretreatment carry out drilling construction to carry out precrushing processing to rock stratum；
S4, carried out by block stamp rushing in construction according to the orientation of pilot hole, at interval of a main pilot hole of main pilot hole progress into
Hole is constructed, and is completed after whole main pilot hole drilling constructions, and auxiliary pilot hole drilling construction is carried out at interval of an auxiliary pilot hole, complete
Into after whole auxiliary pilot hole drilling constructions, carry out repairing slotted eye construction between main pilot hole and auxiliary pilot hole one by one；
S5, trenching construction carried out by grab claw；
S6, injection reinforced anchor bolt make its insertion rock stratum reach desired depth, and reinforced anchor bolt top is higher by rock stratum preset distance, in steel
Muscle anchor pole overcoat steel loading sleeve；
S7, reinforcing bar cage hoisting simultaneously carry out concrete pouring construction.
2. construction method of underground continuous wall in deep light weathered granite according to claim 1, it is characterised in that：Step
It is distributed in S2, in main pilot hole in isosceles triangle in three pretreatment drillings, auxiliary pilot hole and is spaced laterally apart two pretreatment brills
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710300958.6A CN107142924A (en) | 2017-05-02 | 2017-05-02 | Construction method of underground continuous wall in a kind of deep light weathered granite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710300958.6A CN107142924A (en) | 2017-05-02 | 2017-05-02 | Construction method of underground continuous wall in a kind of deep light weathered granite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107142924A true CN107142924A (en) | 2017-09-08 |
Family
ID=59774228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710300958.6A Pending CN107142924A (en) | 2017-05-02 | 2017-05-02 | Construction method of underground continuous wall in a kind of deep light weathered granite |
Country Status (1)
| Country | Link |
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| CN (1) | CN107142924A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364446A (en) * | 2020-03-17 | 2020-07-03 | 深圳市工勘岩土集团有限公司 | Grooving construction method and grooving construction structure for deep hard rock underground diaphragm wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586340A (en) * | 2009-06-17 | 2009-11-25 | 广州市第二市政工程有限公司 | Preconditioning process of continuous wall for weak weathering terrane grooving construction |
| CN203174628U (en) * | 2013-03-25 | 2013-09-04 | 广东省基础工程公司 | Overhanging underground diaphragm wall |
| CN103437341A (en) * | 2013-07-29 | 2013-12-11 | 中铁十六局集团北京轨道交通工程建设有限公司 | Effective grooving construction method for underground continuous wall in slightly-weathered limestone with overlying sandy soil |
-
2017
- 2017-05-02 CN CN201710300958.6A patent/CN107142924A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586340A (en) * | 2009-06-17 | 2009-11-25 | 广州市第二市政工程有限公司 | Preconditioning process of continuous wall for weak weathering terrane grooving construction |
| CN203174628U (en) * | 2013-03-25 | 2013-09-04 | 广东省基础工程公司 | Overhanging underground diaphragm wall |
| CN103437341A (en) * | 2013-07-29 | 2013-12-11 | 中铁十六局集团北京轨道交通工程建设有限公司 | Effective grooving construction method for underground continuous wall in slightly-weathered limestone with overlying sandy soil |
Non-Patent Citations (1)
| Title |
|---|
| 刘光磊: "带嵌岩锁脚桩的地下连续墙施工技术研究与应用", 《铁道建筑技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364446A (en) * | 2020-03-17 | 2020-07-03 | 深圳市工勘岩土集团有限公司 | Grooving construction method and grooving construction structure for deep hard rock underground diaphragm wall |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170908 |
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| RJ01 | Rejection of invention patent application after publication |