CN103924980B - Remove obstacles construction method - Google Patents
Remove obstacles construction method Download PDFInfo
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- CN103924980B CN103924980B CN201410168225.8A CN201410168225A CN103924980B CN 103924980 B CN103924980 B CN 103924980B CN 201410168225 A CN201410168225 A CN 201410168225A CN 103924980 B CN103924980 B CN 103924980B
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- freezing
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- Excavating Of Shafts Or Tunnels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
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Abstract
The invention provides one to remove obstacles construction method, comprise the following steps: detecting obstacles thing information and position before (1) construction, for confirming the consolidation by freezing region that comprises barrier；(2) horizontal freezing is used to construct in described consolidation by freezing region so that described consolidation by freezing region is freezed so that the soil body in consolidation by freezing region forms Frozen Soil Cylinder；(3) treat that in described consolidation by freezing region, the thickness of Frozen Soil Cylinder reaches tunneling requirement, use tunneling method for constructing in mine to excavate passage, dig to Obstacle Position and described barrier is removed by described passage.Compared with prior art, the method has the beneficial effect that without removing obstacles in the case of taking ground space, and has fewer environmental impacts, and integrality and usability to original structure will not constitute destruction, and the duration also will not be affected by extraneous factor.
Description
Technical field
The invention belongs to Tunnel Engineering technical field, be specifically related to one and remove obstacles construction method.
Background technology
Along with the continuous development and utilization of urban underground space, in urban rail transit construction, constructing tunnel meets with
The situation meeting barrier gets more and more, and this barrier is generally pipeline, pile foundation etc., removes these barriers
Often become the engineering constraint duration, increase construction risk and the principal element of surrounding enviroment impact, the most such as
What quickly, safely, effectively processes these barriers just becomes the problem that engineering circles is widely paid close attention to.
At present, barrier removes the form that commonly used ground is pulled out, and removes obstacles to construct and commonly use full circle swinging in ground
Rig carries out pile pulling and removes obstacles, and need to take space of planes significantly, for traffic, the social environment of urban area
Affect bigger；Manufacture ground construction dust, living environment around is affected bigger by noise；Ground is removed obstacles right
The integrality of original underground structure and usability cause certain destruction；Construction period is affected by the external environment
Relatively big, such as the rainy day etc..
Summary of the invention
It is an object of the invention to the defect overcome existing for prior art, now provide one to remove obstacles construction party
Method, has abandoned original ground removal method, after using horizontal freezing to be reinforced by this Land in Regional Land, and knot
Barrier is removed by the mode that conjunction Mining Method tunneling is constructed, thus solves employing ground removal method to former
The destruction having the integrality of underground structure and usability to cause, decreases the impact on surrounding environment, and adds
Fast construction speed.
The invention provides one to remove obstacles construction method, comprise the following steps: detection barrier before (1) construction
Hinder thing information and position, comprise the consolidation by freezing region of barrier for confirmation；(2) freeze described
Reinforcing area uses horizontal freezing to construct so that described consolidation by freezing region is freezed so that freezing to add
Gu the soil body in region forms Frozen Soil Cylinder；(3) thickness of Frozen Soil Cylinder in described consolidation by freezing region is treated
Degree reaches tunneling requirement, uses tunneling method for constructing in mine to excavate passage, digs described to Obstacle Position
Barrier is removed by described passage.
Preferably, in step (1), detecting obstacles thing use electromagnetic induction method, geological radar method,
Any one or a few method in high-density electric and shallow layer seismic imaging technology method.
Preferably, in step (2), described horizontal freezing includes: first beat consolidation by freezing region
If boring, in hole lay freezing pipe, install refrigeration station, to be installed in place after, then by freezing pipe defeated
Send hypothermic saline to carry out heat exchange, absorb the heat around described freezing pipe, make described consolidation by freezing region
Temperature reduces, so that the freezing soil in described consolidation by freezing region forms Frozen Soil Cylinder.
Preferably, the temperature range of the described hypothermic saline carried by described freezing pipe is-28 to-30
Between DEG C.
Preferably, in step (3), mine tunneling method for constructing includes: dig a portal, excavates passage,
Gib, and the soil body outward transport that will dig out is set up in described passage, until excavating Obstacle Position,
Removing obstacles thing, and transported by passage.
Preferably, before excavation passage, a safety protective door need to be installed, then excavate open test pit, for really
Recognize open test pit freezing efficiency, confirm qualified after just can excavate passage.
Preferably, in step (3), after barrier is removed, the structure of the passage soil body need to be carried out also
Former, the soil body dug out is backfilled into described passage, remove gib, and built-in slip casting pipe simultaneously, return
When being filled to hole, closure hole is also pulled out freezing pipe, is filled slip casting by built-in slip casting pipe.
Preferably, after slip casting to be filled is basically completed, then consolidation by freezing region is carried out forced thaw and melts
Heavy slip casting.
The one that the present invention provides is removed obstacles construction method, has abandoned existing ground and has removed obstacles form of construction work, has turned
Remove obstacles construction for underground, first use horizontal freezing that the planning passage that need to excavate to barrier is frozen
Knot, after confirming consolidation by freezing effect, then uses mine tunneling method for constructing, excavates passage, and removing obstacles
Thing, can be without removing obstacles in the case of taking ground space in conjunction with two kinds of methods, and effect on environment
Less, integrality and usability to original structure will not constitute destruction, and the duration also will not be by extraneous factor
Impact.
Accompanying drawing explanation
Fig. 1 is that the present invention removes obstacles the flow process frame diagram of construction method.
Detailed description of the invention
For the benefit of the understanding to the structure of the present invention, illustrates below in conjunction with drawings and Examples.
Fig. 1 is that the present invention removes obstacles the flow process frame diagram of construction method.
Shown in Fig. 1, the construction method of removing obstacles that the present invention provides, comprise the steps:
Step S1: detecting obstacles thing information and position before construction, for confirming to comprise freezing of barrier
Reinforcing area.Detecting obstacles thing generally use electromagnetic induction method, geological radar method, high-density electric, with
And any one method in shallow layer seismic imaging technology method, owing to the utilization of electromagnetic induction method limits less, than
It is relatively flexible, so the present embodiment is preferably electromagnetic induction method.
Step S2: described consolidation by freezing region use horizontal freezing construct so that described in freeze
Knot reinforcing area freezes so that the soil body in consolidation by freezing region forms Frozen Soil Cylinder.
The concrete operations of horizontal freezing are: first consolidation by freezing region is set boring, execute by boring
Work figure arranges boring, and position, the hole deviation of boring not should be greater than 50mm, and the aperture of boring is 127mm.Freeze
The actual drilling depth in hole answers the big 0.5m of wall projected depth.The deflection of boring should control within 8 ‰, pore-forming
Maximum spacing is not more than 2m.Being laid with freezing pipe in boring, further, this freezing pipe selects wall
The thick φ 108 low-carbon (LC) seamless steel pipe not less than 7mm, single pipe length 2m to 4m, between freezing pipe
It is connected by screwed connection, then is aided with manual welding, repair welding.Then on consolidation by freezing areas adjacent ground
Installing refrigeration station, freezing station equipment mainly includes power distribution cabinet, refrigerator, brine tank, brine pump, clear
Water pump, cooling tower and clear water reserviors etc., equipment is installed and is carried out by the requirement of equipment operating manual.To be installed
After in place, then carry out heat exchange by freezing pipe transporting low temperature salt solution, absorb the heat around freezing pipe,
Consolidation by freezing regional temperature is made to reduce, so that freezing soil forms freezing curtain in consolidation by freezing region.Logical
The described hypothermic saline temperature range of often freezing pipe conveying controls between-28～-30 degrees Celsius, typically
After seven days, consolidation by freezing regional temperature is reduced to-20 degrees centigrade.Use the useful of horizontal freezing
Effect is that the soil strength freezed is high, excavates passage, can accomplish water-tight in Frozen Soil body, for
In-cavity construction is created a favorable environment, and construction safety, not by place, earth's surface and depth limit, to ring around
Border impact is less, is particularly suitable for city proper underground construction.
Step S3: treat that in described consolidation by freezing region, the thickness of Frozen Soil Cylinder reaches tunneling requirement, uses
Tunneling method for constructing in mine excavates passage, digs to Obstacle Position and is removed by described barrier.
Concretely comprising the following steps of mine tunneling method for constructing: install a safety protective door, in positive freezing process,
Will judge whether frost wall is handed over circle and reach design thickness according to observed temperature data, thermometric judges frost wall
Friendship is enclosed and is reached design thickness and carries out excavating open test pit again, in confirmation frost wall after the hydraulic pressure of soil layer basic imporosity
The most formally excavate.When formally excavating, first cut portal, excavate passage, stablizing according to frost wall
Property, enter and safeguard frozen state, safeguard that solidification point is-28 ° of C.Gib is set up in passage,
And the soil body outward transport that will dig out, until excavating Obstacle Position, removing obstacles thing, and transported by passage.
Step S4: after barrier cleaning thoroughly, soil body backfill ground settlement and tunnel gone out, backfill is logical
The road soil body, removes gib, simultaneously built-in slip casting pipe in backfill passage, when being backfilled to hole,
Use armored concrete closure portal, pull out freezing pipe and stop consolidation by freezing, filled by built-in slip casting pipe
Slip casting, in order to reduce ground loss, after slip casting to be filled is basically completed, then is carried out consolidation by freezing region
Thaw and thaw settlement grouting, when melting for the frozen water prevented in consolidation by freezing region, cause soil body thaw collapse,
Destroy original soil structures.
The general principle of the present invention is: arranges horizontal frozen hole around tunnel, and circulates in freezing hole
Hypothermic saline, makes the aquifer water-bearing stratum near freezing hole freeze, and forms intensity high, the frost wall that closure is good,
Then Mining Method is used to carry out tunnel excavation and construction under the protection of frost wall.The present invention's is main
Sequence of construction is: preparation of construction, freezing hole construction, installs simultaneously and freezes refrigeration system, installs and freeze salt
Water system and monitoring system, actively freeze, and examination is dug, tunnel piercing and gib, removing obstacles thing,
The backfill soil body, fills slip casting, thaw settlement grouting.
The one that the present invention provides is removed obstacles construction method, has abandoned existing ground and has removed obstacles form of construction work,
Transfer underground to remove obstacles construction, first use horizontal freezing that the planning passage that need to excavate to barrier is carried out
Actively freeze, after confirming consolidation by freezing effect, then use mine tunneling method for constructing, excavation passage, and clearly
Except barrier, can be without removing obstacles in the case of taking ground space in conjunction with two kinds of methods, and to ring
Border impact is less, and integrality and usability to original structure will not constitute destruction, and the duration also will not be by outward
Boundary's factor impact.
Above in association with accompanying drawing embodiment, the present invention is described in detail, those skilled in the art
According to the above description the present invention can be made many variations example.Thus, some details in embodiment should not
Constitute limitation of the invention, the present invention by the scope that defines using appended claims as protection model
Enclose.
Claims (7)
1. a construction method of removing obstacles, it is characterised in that comprise the following steps:
(1) detecting obstacles thing information and position before construction, comprise the consolidation by freezing region of barrier for confirmation；
(2) horizontal freezing is used to construct in described consolidation by freezing region so that described consolidation by freezing region is freezed so that the soil body in consolidation by freezing region forms Frozen Soil Cylinder；
(3) treat that in described consolidation by freezing region, the thickness of Frozen Soil Cylinder reaches tunneling requirement, tunneling method for constructing in mine is used to excavate passage, dig to Obstacle Position and described barrier is removed by described passage, after barrier is removed, the structure of the passage soil body need to be reduced, the soil body dug out be backfilled into described passage, remove gib simultaneously, and built-in slip casting pipe, when being backfilled to hole, closure hole is also pulled out freezing pipe, is filled slip casting by built-in slip casting pipe.
Construction method of removing obstacles the most according to claim 1, it is characterized in that, in step (1), detecting obstacles thing uses electromagnetic induction method, geological radar method, high-density electric and shallow layer seismic imaging technology method or uses any combination in electromagnetic induction method, geological radar method, high-density electric and shallow layer seismic imaging technology method.
Construction method of removing obstacles the most according to claim 1, it is characterized in that, in step (2), described horizontal freezing includes: first consolidation by freezing region is set boring, lays freezing pipe in hole, refrigeration station is installed, to be installed in place after, then carry out heat exchange by freezing pipe transporting low temperature salt solution, absorb the heat around described freezing pipe, described consolidation by freezing regional temperature is made to reduce, so that the freezing soil in described consolidation by freezing region forms Frozen Soil Cylinder.
Construction method of removing obstacles the most according to claim 3, it is characterised in that the temperature range of the described hypothermic saline carried by described freezing pipe is between-28 to-30 DEG C.
Construction method of removing obstacles the most according to claim 1, it is characterized in that, in step (3), mine tunneling method for constructing includes: hole door, excavates passage, sets up gib in described passage, and the soil body outward transport that will dig out, until excavating Obstacle Position, removing obstacles thing, and transported by passage.
Construction method of removing obstacles the most according to claim 5, it is characterised in that excavation passage before, a safety protective door need to be installed, then excavate open test pit, for confirm open test pit freezing efficiency, confirm qualified after just can excavate passage.
Construction method of removing obstacles the most according to claim 6, it is characterised in that also include: after slip casting to be filled is basically completed, then consolidation by freezing region is thawed and thaw settlement grouting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410168225.8A CN103924980B (en) | 2014-04-24 | 2014-04-24 | Remove obstacles construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410168225.8A CN103924980B (en) | 2014-04-24 | 2014-04-24 | Remove obstacles construction method |
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| Publication Number | Publication Date |
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| CN103924980A CN103924980A (en) | 2014-07-16 |
| CN103924980B true CN103924980B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410168225.8A Active CN103924980B (en) | 2014-04-24 | 2014-04-24 | Remove obstacles construction method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761792B (en) * | 2017-01-20 | 2019-01-25 | 武汉市市政建设集团有限公司 | A kind of full-sleeve full-rotation drill sleeve and shield cutter front obstacle sweep-out method |
| CN107060800A (en) * | 2017-03-09 | 2017-08-18 | 广东水电二局股份有限公司 | A kind of shield-tunneling construction huge stone handling construction method |
| CN107740596A (en) * | 2017-11-30 | 2018-02-27 | 中建三局第建设工程有限责任公司 | A kind of non-open cut Demolition Construction method of underground structure being drilled into |
| CN111058850B (en) * | 2019-11-13 | 2021-05-28 | 上海隧道工程有限公司 | Underground obstacle freezing, detecting and clearing method |
| CN112502715A (en) * | 2020-11-08 | 2021-03-16 | 上海市隧道工程轨道交通设计研究院 | Temporary plugging and reinforcing method for end of shield tunnel |
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|---|---|---|---|---|
| CN2685570Y (en) * | 2004-03-08 | 2005-03-16 | 广东省基础工程公司 | Pipe-jacking tunneller |
| CN201125733Y (en) * | 2007-12-20 | 2008-10-01 | 中铁十二局集团有限公司 | Deep drilled shaft concrete filling device |
| CN101418567A (en) * | 2007-10-22 | 2009-04-29 | 上海隧道工程股份有限公司 | Protective cutting construction method for tunnel segment |
| CN103075161A (en) * | 2013-01-16 | 2013-05-01 | 中铁隧道集团有限公司 | Quick underground obstacle clearing method for slurry shield construction |
| CN203008925U (en) * | 2012-08-17 | 2013-06-19 | 北京市政建设集团有限责任公司 | Shield barrier-free launching apparatus |
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2014
- 2014-04-24 CN CN201410168225.8A patent/CN103924980B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685570Y (en) * | 2004-03-08 | 2005-03-16 | 广东省基础工程公司 | Pipe-jacking tunneller |
| CN101418567A (en) * | 2007-10-22 | 2009-04-29 | 上海隧道工程股份有限公司 | Protective cutting construction method for tunnel segment |
| CN201125733Y (en) * | 2007-12-20 | 2008-10-01 | 中铁十二局集团有限公司 | Deep drilled shaft concrete filling device |
| CN203008925U (en) * | 2012-08-17 | 2013-06-19 | 北京市政建设集团有限责任公司 | Shield barrier-free launching apparatus |
| CN103075161A (en) * | 2013-01-16 | 2013-05-01 | 中铁隧道集团有限公司 | Quick underground obstacle clearing method for slurry shield construction |
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| CN103924980A (en) | 2014-07-16 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20151123 Address after: 200232 Shanghai city Xuhui District Wanping Road No. 1099 5 floor Applicant after: SHANGHAI TUNNEL ENGINEERING CO., LTD. Applicant after: SHANGHAI TUNNEL ENGINEERING CO., LTD. Applicant after: Shanghai tunneling shield Engineering Co., Ltd Address before: 200082 No. 118, Dalian Road, Shanghai, Yangpu District Applicant before: Shanghai Tunnel Engineering Co., Ltd. Applicant before: Shanghai tunneling shield Engineering Co., Ltd |
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