CN107747492A - Extension type cross preliminary bracing structure and its deformation dynamics control method - Google Patents
Extension type cross preliminary bracing structure and its deformation dynamics control method Download PDFInfo
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- CN107747492A CN107747492A CN201711101896.2A CN201711101896A CN107747492A CN 107747492 A CN107747492 A CN 107747492A CN 201711101896 A CN201711101896 A CN 201711101896A CN 107747492 A CN107747492 A CN 107747492A
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- 238000000034 method Methods 0.000 title claims description 9
- 238000010276 construction Methods 0.000 claims abstract description 41
- 239000011435 rock Substances 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims description 27
- 239000004567 concrete Substances 0.000 claims description 21
- 210000005239 tubule Anatomy 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 abstract description 7
- 238000007569 slipcasting Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000004911 serous fluid Anatomy 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of extension type cross preliminary bracing structure, it includes：Horizontally disposed interim inverted arch, the interim median septum being vertically arranged and the vault branch protecting assembly set along tunnel inner wall face；Characterized in that, it is arranged at intervals with some jack assemblies for being used to control the vault branch protecting assembly lifting in the interim median septum, along the tunnel bearing of trend.Country rock and the deformation controlling problem of top construction of structures caused by existing construction of structures construction is worn under bored tunnel are which solved, can save down and wear the excessive reinforcement measure of engineering, significantly cost saving, engineering construction efficiency is worn under raising.
Description
Technical field
The present invention relates to Geotechnical Engineering field, more particularly to a kind of extension type cross preliminary bracing structure and its deformation to move
State control method.
Background technology
When wearing existing construction of structures under bored tunnel, bored tunnel construction will cause peripheral rock that relaxation deformation occurs, and
Further cause the existing construction of structures in top to deform, or even destroy, influence the normal use and safety of top construction of structures.
Therefore, the bored tunnel construction that top construction of structures is worn under proposes higher Deformation control requirement.At present, engineering is worn under is
Control country rock and superstructure deform, and usually take the measures such as slip casting, pipe canopy, reduce and are deformed caused by tunnel excavation, but
These measures are often invested greatly, DeGrain.
The content of the invention
The present invention is directed to the drawbacks described above of prior art, there is provided a kind of extension type cross preliminary bracing structure and its deformation
Dynamic control method, which solve and the change of country rock and top construction of structures caused by existing construction of structures construction is worn under bored tunnel
Shape control problem, it can save down and wear the excessive reinforcement measure of engineering, significantly cost saving, engineering construction effect is worn under raising
Rate.
The technical solution adopted for the present invention to solve the technical problems is：
On the one hand, there is provided a kind of extension type cross preliminary bracing structure, it includes：Horizontally disposed interim inverted arch,
The interim median septum being vertically arranged and the vault branch protecting assembly set along tunnel inner wall face；In the interim median septum, along institute
State tunnel bearing of trend and be arranged at intervals with some jack assemblies for being used to control the vault branch protecting assembly lifting.
Preferably, the jack assembly includes：Lower pole；And it is arranged on the scalable of the lower pole top
Jack.
Preferably, the spacing between the jack assembly is 1-2m.
Preferably, the vault branch protecting assembly includes：Concrete layer, its internal face around the tunnel are set；And
Grid steel frame, it is set along the tunnel bearing of trend, the internal face around shown tunnel.
Preferably, the extension type cross preliminary bracing structure also includes advance support structure, and the advance support
Structure includes：
Long tube, it is set around the outside wall surface uniform intervals of the concrete layer；
Advanced tubule, it is set around the outside wall surface uniform intervals of the concrete layer, and adjacent two advanced tubule
Between be provided with a long tube；
The cross section of the long tube and advanced tubule, and can be by described towards the excavated surface in the tunnel
Long tube and/or advanced tubule carry out pre-grouting.
Preferably, the advance support structure also includes：Injected hole, it sets along the tunnel arch and abutment wall
Put.
Preferably, the setting angle of the long tube is faced upward 1 ° to excavate angle；The outer limb of the advanced tubule is 10-
15°。
Preferably, the extension type cross preliminary bracing structure also includes：Lock pin anchor tube, its one end and the vault branch
Protecting assembly is connected, and the other end is fixed in the rock mass around the tunnel；And between the lock pin anchor tube and the horizontal plane
Angle is 25-50 °.
On the other hand, a kind of deformation dynamics control method of above-mentioned supporting construction is also provided, it comprises the following steps：
S1, the tunnel is divided under upper left base tunnel top, upper left base tunnel bottom, lower-left base tunnel top, lower-left base tunnel
Portion, upper right base tunnel top, upper right base tunnel bottom, bottom right base tunnel top, the part of bottom right base tunnel bottom 8；
S2, the upper left base tunnel top is excavated, and the vault branch protecting assembly is set on the upper left base tunnel top of excavation
Part I；
S3, the upper left base tunnel bottom is excavated, and the vault branch protecting assembly is set in the upper left base tunnel bottom of excavation
Part II, and the Part I of the interim median septum and the Part I of the interim inverted arch are set；And face described
When median septum Part I in along the bearing of trend in the tunnel, some jack assemblies are set；
S4, the lower-left base tunnel top is excavated, and the vault branch protecting assembly is set on the lower-left base tunnel top of excavation
Part III；
S5, the lower-left base tunnel bottom is excavated, and the vault branch protecting assembly is set in the lower-left base tunnel bottom of excavation
Part IV, and the Part II of the interim median septum is set；The Part I and Part II of the interim median septum
Form complete interim median septum；
S6, the upper right base tunnel top is excavated, and the vault branch protecting assembly is set on the upper right base tunnel top of excavation
Part V；
S7, the upper right base tunnel bottom is excavated, and the vault branch protecting assembly is set in the upper right base tunnel bottom of excavation
The Part II of Part VI and the interim inverted arch；
S8, the bottom right base tunnel top is excavated, and the vault branch protecting assembly is set on the bottom right base tunnel top of excavation
Part VII；
S9, the bottom right base tunnel bottom is excavated, and the vault branch protecting assembly is set in the bottom right base tunnel bottom of excavation
Part VIII；The Part I of the vault branch protecting assembly to Part VIII forms complete vault branch protecting assembly.
Preferably, in addition to：S10, the tunnel arch deformation monitoring result is obtained, and controlled according to the testing result
The lifting of the jack assembly, and then adjust the lifting of the arch branch protecting assembly.
The beneficial effect of technical solution of the present invention is：
The extension type cross first branch structure of the invention formed using interim median septum and interim inverted arch, it can actively certainly
Deformed by adjustment Tunnel top, sedimentation and deformation caused by construction is worn in compensation top construction of structures because under, ensure that top construction is built
The safety of thing；It is divided into four parts to excavate bored tunnel, improves the rigidity and intensity of supporting construction, reduce excavation and cause
Surrouding rock deformation, improve the construction safety of bored tunnel；It can save down and wear the excessive reinforcement measure of engineering, significantly save work
Journey is invested, and engineering construction efficiency is worn under raising.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of extension type cross preliminary bracing structure in embodiments of the invention one；
Fig. 2 is the structural representation of jack assembly in embodiments of the invention one；
Fig. 3 is the side view of extension type cross preliminary bracing structure in embodiments of the invention one；
Fig. 4 is the sectional view of barrier steelframe in embodiments of the invention one；
Fig. 5 a-5k are the flow charts of Supporting Structure deformation dynamic control method in embodiments of the invention two.
Embodiment
In order that the purpose of the present invention, technical scheme and advantage are more clearly understood, below in conjunction with drawings and examples,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used for explaining this hair
It is bright, it is not intended to limit the present invention.
Embodiment one：
Shown in Fig. 1-3, extension type cross preliminary bracing structure of the invention can be used for the construction of bored tunnel, and it is wrapped
Include：Horizontally disposed interim inverted arch 10, the interim median septum 20 being vertically arranged and the vault supporting set along tunnel inner wall face
Component；It is arranged at intervals with the interim median septum 20, along the tunnel bearing of trend some for controlling the vault supporting
The jack assembly 30 of component lifting.
Specifically, the spacing between the jack assembly 30 is 1-2m (being preferably 1.5m), and the jack assembly
30 include：Lower pole 301 (such as steel pipe column)；And it is arranged on the telescopic jack on the top of lower pole 301
302.The interim inverted arch 10 and interim median septum 20 are work 22a type I-steel.
Thus, can be made up of described according to horizontally disposed interim inverted arch 10, the interim median septum 20 being vertically arranged
The first branch structure of " ten " word, according to the deformation data of actual measurement top existing structure, makes vault supporting by the jack assembly 30
Component jacks and landing, and supplement wears sedimentation and deformation caused by construction under, active control structure deformation, is achieved in vault construction
What is deformed is controllable, adjustable.The deformation of top existing structure caused by Under-cross tunnel construction can be effectively reduced simultaneously, ensured
The safety of portion's existing structure, eliminate down the potential safety hazard for wearing existing structure in work progress.
The vault branch protecting assembly includes：Concrete layer 401, its internal face around the tunnel are set, the present embodiment
In, the concrete layer 401 is made up of C25 gunite concretes, thickness 30cm；And grid steel frame 402, it is along the tunnel
Bearing of trend, the internal face around shown tunnel are set；Specifically, the grid steel frame 402 is four limbs steelframe, and longitudinal pitch
0.5m, meanwhile, as shown in figure 4, the barrier cage bar 4021 of the grid steel frame 402 is diameter 25mm HRB400 reinforcing bars, and institute
The spacing for stating barrier cage bar 4021 is 200mm*195mm (i.e. D1*D2).
Grid steel frame 402, interim median septum 20 and interim inverted arch 10 set 22 ring spacing 1000mm longitudinal directions in interior outside
Connect reinforcing bar, interior outside arranged for interval.And the inner side of grid steel frame 402 sets double-deck 8@150x150 bar-mat reinforcements, interim median septum 20 and
Interim inverted arch 10 sets the 150x150 bar-mat reinforcements of individual layer 8 in inner side, bar-mat reinforcement with grid steel frame 402, interim median septum 20 and
The interim spot welding of inverted arch 10 firmly connects.
Further, as shown in Figure 1-2, the extension type cross preliminary bracing structure also includes advance support structure,
And the advance support structure includes：
Long tube 501, it is set around the outside wall surface uniform intervals of the concrete layer 401；The long tube 501 can be straight
Footpath 108mm hot rolled seamless steel tube, and the setting angle of the long tube 501 is faced upward 1 ° to excavate angle, the length 20- of long tube 501
25m (being preferably 23.05m), ring spacing 250-350mm (being preferably 300mm), front end is sharp structure, is also opened up on tube wall
There is long tube injected hole, it is in quincuncial arrangement, is reserved with the mouth of pipe and only starches section；
Advanced tubule 502, it is set around the outside wall surface uniform intervals of the concrete layer 401, and adjacent two advanced
A long tube 501,502 a diameter of 42mm of advanced tubule are provided between ductule 502, length is that 2-4m (is preferably
3m), ring spacing 250-350mm (being preferably 300mm), outer limb are 10 ° -15 ° (they being preferably 12 °), and as shown in figure 1,
The long tube 501 and advanced tubule 502 are arranged at the scope of 120-170 ° of the tunnel arch (being preferably 150 °)
Interior (i.e. θ angles in Fig. 1).
Pre-grouting can be carried out by the long tube 501 and/or advanced tubule 502；Meanwhile the long tube 501 and
The cross section of advanced tubule 502 is towards the excavated surface in the tunnel.
In addition, to strengthen the lasting effects of arch structure, just branch should be carried out after the completion of vault branch protecting assembly in time and is noted behind
Slurry, ensure that just branch is closely knit behind, therefore, the advance support structure also includes：Injected hole, it is along the tunnel arch and side
Wall is set, and the injected hole is in quincuncial arrangement, 2.0~3.0 meters of the injected hole ring spacing (being preferably 2.5m), longitudinal direction
Spacing is 3.0 meters.Diameter 32mm steel welded tube may be selected as Grouting Pipe to the injected hole slip casting, and slip casting depth is vault
Branch protecting assembly behind 0.5m, grouting serous fluid use cement mortar.
Further, to strengthen the processing for tunnel arch foot, the extension type cross preliminary bracing structure also includes：
At least one lock pin anchor tube 601, its one end is connected with the vault branch protecting assembly, the rock that the other end is fixed on around the tunnel
In body；And the angle between the lock pin anchor tube 601 and the horizontal plane is 25-50 ° (being preferably 30 ° or 45 °), specifically,
On the upper half section in the tunnel, the angle between the lock pin anchor tube 601 and the horizontal plane is 30 °, under the tunnel
On half section, the angle between the lock pin anchor tube 601 and the horizontal plane is 45 °.
Embodiment two：
As shown in Fig. 5 a-5k, the present embodiment also provides a kind of deformation dynamics control method using above-mentioned supporting construction, its
Comprise the following steps：
S10, the tunnel is divided into upper left base tunnel top S1, upper left base tunnel bottom S2, lower-left base tunnel top S3, lower-left
Base tunnel bottom S4, upper right base tunnel top S5, upper right base tunnel bottom S6, bottom right base tunnel top S7, bottom right base tunnel bottom 8 portions of S8
Point；
S20, long tube 501 described in setting unit and part advanced tubule 502 at the upper left base tunnel top S1, pass through
The long tube 501 and/or advanced tubule 502 carry out pre-grouting；The upper left base tunnel top S1 is excavated, and on a left side for excavation
Top heading top S1 sets Part I (including part concrete layer 401 and the partial grid steel of the vault branch protecting assembly
Frame 402)；
S30, the upper left base tunnel bottom S2 is excavated, and the vault supporting group is set in the upper left base tunnel bottom S2 of excavation
The Part II (including part concrete layer 401 and partial grid steelframe 402) of part, and the interim median septum 20 is set
The Part I of Part I and the interim inverted arch 10；And along the tunnel in the Part I of the interim median septum 20
The bearing of trend in road sets some jack assemblies 30；
S40, the lower-left base tunnel top S3 is excavated, and the vault supporting is set in the lower-left base tunnel top S3 of excavation
The Part III (including part concrete layer 401 and partial grid steelframe 402) of component；
S50, the lower-left base tunnel bottom S4 is excavated, and the vault supporting group is set in the lower-left base tunnel bottom S4 of excavation
The Part IV (including part concrete layer 401 and partial grid steelframe 402) of part, and the interim median septum 20 is set
Part II；The Part I and Part II of the interim median septum 20 form complete interim median septum 20；
S60, long tube 501 described in setting unit and part advanced tubule 502 at the upper right base tunnel top S5, pass through
The long tube 501 and/or advanced tubule 502 carry out pre-grouting；The upper right base tunnel top S5 is excavated, and on the right side of excavation
Top heading top S5 sets Part V (including part concrete layer 401 and the partial grid steel of the vault branch protecting assembly
Frame 402)；
S70, the upper right base tunnel bottom S6 is excavated, and the vault supporting group is set in the upper right base tunnel bottom S6 of excavation
The Part VI (including part concrete layer 401 and partial grid steelframe 402) of part；And set the of the interim inverted arch 10
Two parts；And the Part I and Part II of the interim inverted arch 10 form complete interim inverted arch；
S80, the bottom right base tunnel top S7 is excavated, and the vault supporting group is set in the bottom right base tunnel top S7 of excavation
The Part VII (including part concrete layer 401 and partial grid steelframe 402) of part；
S90, the bottom right base tunnel bottom S8 is excavated, and the vault supporting group is set in the bottom right base tunnel bottom S8 of excavation
The Part VIII (including part concrete layer 401 and partial grid steelframe 402) of part；First of the vault branch protecting assembly
Divide to Part VIII and form complete vault branch protecting assembly.
Preferably, in addition to：S100, the tunnel arch deformation monitoring result is obtained, and according to the testing result control
The lifting of the jack assembly 30 is made, and then adjusts the lifting of the arch branch protecting assembly；
S101, on internal face (the preferably internal face of concrete layer 401) surface of the vault branch protecting assembly, progress is levelling,
And water layer 50 of being set up defences after levelling on the internal face upper berth of the vault branch protecting assembly, further in the waterproof layer 50
Upper, secondary lining 40 of constructing from bottom to top；
S102, after the concrete strength of the secondary lining 40 reaches more than the 75% of design strength, described secondary
Mud jacking hole, and the built-in slip casting pipe in the mud jacking hole are reserved in the arch of lining cutting 40, and the steel that the Grouting Pipe is diameter 32mm welds
Pipe, the mud jacking hole arrange that its ring spacing is 2-3.5m (preferably 2.5m) in blossom type；Its longitudinal pitch be 2-5m (preferably
4.0m)；
Slip casting is carried out by the Grouting Pipe behind to the secondary lining 40 so that the vault branch protecting assembly with it is secondary
Keep closely knit between lining cutting 40；
S103, after the intensity of secondary lining 40 reaches design requirement, abolish the interim inverted arch 10 and it is interim in
Next door 20.
It should be noted that the technical characteristic in above-described embodiment one, two can be combined, the technology combined
Scheme belongs to protection scope of the present invention.
In summary, technique effect of the invention includes：
(1) by using branch structure at the beginning of extension type cross, the deformation of Tunnel top actively can be freely adjusted, compensates top
Sedimentation and deformation caused by construction is worn in construction of structures because under, ensure the safety of top construction of structures；
(2) using vertical interim mid-board and horizontal interim inverted arch, the temporary support structures of right-angled intersection are formed, will
Bored tunnel is divided into four parts to excavate, and improves the rigidity and intensity of supporting construction, reduces surrouding rock deformation caused by excavation,
Improve the construction safety of bored tunnel.
(3) present invention, which can save down, wears the excessive reinforcement measure of engineering, and significantly cost saving, engineering is worn under raising
Efficiency of construction.
Claims (10)
1. a kind of extension type cross preliminary bracing structure, it includes：Horizontally disposed interim inverted arch, be vertically arranged it is interim in
Next door and the vault branch protecting assembly set along tunnel inner wall face；Characterized in that, in the interim median septum, along the tunnel
Bearing of trend is arranged at intervals with some jack assemblies for being used to control the vault branch protecting assembly lifting.
2. supporting construction as claimed in claim 1, it is characterised in that the jack assembly includes：Lower pole；And set
Put the telescopic jack on the lower pole top.
3. supporting construction as claimed in claim 1, it is characterised in that the spacing between the jack assembly is 1-2m.
4. supporting construction as claimed in claim 1, it is characterised in that the vault branch protecting assembly includes：
Concrete layer, its internal face around the tunnel are set；
And grid steel frame, it is set along the tunnel bearing of trend, the internal face around shown tunnel.
5. supporting construction as claimed in claim 4, it is characterised in that the extension type cross preliminary bracing structure also includes
Advance support structure, and the advance support structure includes：
Long tube, it is set around the outside wall surface uniform intervals of the concrete layer；
Advanced tubule, it is set around the outside wall surface uniform intervals of the concrete layer, and between adjacent two advanced tubule
Provided with a long tube；
The cross section of the long tube and advanced tubule can pass through the long tube towards the excavated surface in the tunnel
And/or advanced tubule carries out pre-grouting.
6. supporting construction as claimed in claim 5, it is characterised in that the advance support structure also includes：Injected hole,
It is set along the tunnel arch and abutment wall.
7. supporting construction as claimed in claim 5, it is characterised in that the setting angle of the long tube is faced upward to excavate angle
1°；The outer limb of the advanced tubule is 10-15 °.
8. the supporting construction as described in claim any one of 1-7, it is characterised in that the extension type cross preliminary bracing knot
Structure also includes：Pin anchor tube is locked, its one end is connected with the vault branch protecting assembly, the rock mass that the other end is fixed on around the tunnel
In；And the angle between the lock pin anchor tube and the horizontal plane is 25-50 °.
9. the deformation dynamics control method of supporting construction in a kind of claim 8, it is characterised in that comprise the following steps：
S1, the tunnel is divided into upper left base tunnel top, upper left base tunnel bottom, lower-left base tunnel top, lower-left base tunnel bottom, the right side
Top heading top, upper right base tunnel bottom, bottom right base tunnel top, the part of bottom right base tunnel bottom 8；
S2, the upper left base tunnel top is excavated, and the first of the vault branch protecting assembly is set on the upper left base tunnel top of excavation
Part；
S3, the upper left base tunnel bottom is excavated, and the second of the vault branch protecting assembly is set in the upper left base tunnel bottom of excavation
Part, and the Part I of the interim median septum and the Part I of the interim inverted arch are set；And it is described it is interim in
Some jack assemblies are set along the bearing of trend in the tunnel in the Part I in next door；
S4, the lower-left base tunnel top is excavated, and the 3rd of the vault branch protecting assembly the is set on the lower-left base tunnel top of excavation
Part；
S5, the lower-left base tunnel bottom is excavated, and the 4th of the vault branch protecting assembly the is set in the lower-left base tunnel bottom of excavation
Part, and the Part II of the interim median septum is set；The Part I and Part II of the interim median septum are formed
Complete interim median septum；
S6, the upper right base tunnel top is excavated, and the 5th of the vault branch protecting assembly the is set on the upper right base tunnel top of excavation
Part；
S7, the upper right base tunnel bottom is excavated, and the 6th of the vault branch protecting assembly the is set in the upper right base tunnel bottom of excavation
Part and the Part II of the interim inverted arch；
S8, the bottom right base tunnel top is excavated, and the 7th of the vault branch protecting assembly the is set on the bottom right base tunnel top of excavation
Part；
S9, the bottom right base tunnel bottom is excavated, and the 8th of the vault branch protecting assembly the is set in the bottom right base tunnel bottom of excavation
Part；The Part I of the vault branch protecting assembly to Part VIII forms complete vault branch protecting assembly.
10. construction method as claimed in claim 9, it is characterised in that also include：S10, obtain the tunnel arch deformation prison
Result is surveyed, and the lifting of the jack assembly is controlled according to the testing result, and then adjusts the arch branch protecting assembly
Lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101896.2A CN107747492B (en) | 2017-11-10 | Telescopic cross primary support structure and deformation dynamic control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101896.2A CN107747492B (en) | 2017-11-10 | Telescopic cross primary support structure and deformation dynamic control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107747492A true CN107747492A (en) | 2018-03-02 |
| CN107747492B CN107747492B (en) | 2024-06-21 |
Family
ID=
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756895A (en) * | 2018-05-07 | 2018-11-06 | 安徽省公路桥梁工程有限公司 | A kind of tunnel excavation support construction method |
| CN108915738A (en) * | 2018-07-12 | 2018-11-30 | 西安科技大学 | A kind of tunnel tunnel face supporting apparatus |
| CN108999620A (en) * | 2018-07-04 | 2018-12-14 | 中铁六局集团有限公司 | Rocky tunnel advanced tubule export & import construction |
| CN110566228A (en) * | 2019-09-24 | 2019-12-13 | 中铁第六勘察设计院集团有限公司 | tunnel middle partition wall with repeated jacking and locking functions and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004324139A (en) * | 2003-04-23 | 2004-11-18 | Ando Corp | Construction method of tunnel timbering |
| CN101858222A (en) * | 2010-05-25 | 2010-10-13 | 北京城建设计研究总院有限责任公司 | Method for controlling deformation in zero-distance tunneling of new tunnel under existing subway construction |
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| CN108756895A (en) * | 2018-05-07 | 2018-11-06 | 安徽省公路桥梁工程有限公司 | A kind of tunnel excavation support construction method |
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| CN108999620A (en) * | 2018-07-04 | 2018-12-14 | 中铁六局集团有限公司 | Rocky tunnel advanced tubule export & import construction |
| CN108915738A (en) * | 2018-07-12 | 2018-11-30 | 西安科技大学 | A kind of tunnel tunnel face supporting apparatus |
| CN110566228A (en) * | 2019-09-24 | 2019-12-13 | 中铁第六勘察设计院集团有限公司 | tunnel middle partition wall with repeated jacking and locking functions and construction method thereof |
| CN110566228B (en) * | 2019-09-24 | 2024-02-09 | 中铁第六勘察设计院集团有限公司 | Tunnel middle partition wall with repeated supporting and locking functions and construction method thereof |
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