CN110374628A - One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method - Google Patents
One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method Download PDFInfo
- Publication number
- CN110374628A CN110374628A CN201910710038.0A CN201910710038A CN110374628A CN 110374628 A CN110374628 A CN 110374628A CN 201910710038 A CN201910710038 A CN 201910710038A CN 110374628 A CN110374628 A CN 110374628A
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- Prior art keywords
- tomography
- tunnel
- backbreaking
- faults
- section
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- 238000003325 tomography Methods 0.000 claims abstract description 67
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000009415 formwork Methods 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Abstract
The present invention discloses one kind and passes through the double-deck anti-fault structure in creep faults tunnel and construction method, and structure is including being arranged section of backbreaking at creep faults, and overall thickness and the backbreak anti-tomography of the comparable outer layer of size, preliminary bracing and the anti-tomography of internal layer；The anti-tomography of outer layer is toughness material, is close to tunnel and backbreaks contour line and set；Preliminary bracing is set on the inside of the anti-tomography of outer layer；The anti-tomography of internal layer is toughness material, is set on the inside of preliminary bracing；A section Tunnel Second Lining of backbreaking is set on the inside of the anti-tomography of internal layer, and shape, size are identical as normal through section Tunnel Second Lining.The shortcomings that sudden enlargement or diminution of section is not present in the present invention, without individually designed secondary lining or uses new formwork jumbo, overcomes existing " design of backbreaking "；Anti- tomography allows the stratum of tomography two sides to generate biggish dislocation and does not generate excessive influence to section Tunnel Second Lining of backbreaking, and protects it from being destroyed, and guarantee the track elevation, the ride comfort that are laid in section Tunnel Second Lining of backbreaking.
Description
Technical field
The present invention relates to Tunnel Engineering technical field, specially one kind pass through the double-deck anti-fault structure in creep faults tunnel and
Construction method.
Background technique
In Practical Project, tunnel inevitably passes through active fault sometimes.When the changing of the relative positions occurs for active fault, stratum
In will generate any supporting construction and be all difficult to the permanent displacement resisted, to seriously damage tunnel structure, there is such as cracking, wrong
Platform etc. destroys.Tunnel Engineering is permanent structure engineering, once destroying just can not rebuild and be difficult to repair, therefore such destruction
Influence for tunnel or even all fronts operation security is all difficult to the appraisal.
The creep changing of the relative positions is one of two kinds of major ways of faulting, and it is disconnected to be that fault belt generates as time goes by
The slow sliding process of layer region, therefore be a kind of slow and having time build-up effect forms of motion.It is applied in engineering at present
Pass through creep faults band tunnel earthquake resistant construction be mainly " design of backbreaking " and " hinged design "." design of backbreaking " is according to creep
The issuable maximum magnitude of misalignment of tomography, expands tunnel cross-section size in tunneling；" hinged design " is then to try to reduce
Tunnel segmental length makes a certain range of segment of shear-zone and its two sides keep relatively independent, adopts between each rigidity tunnel segment
With the relatively small flexible connection of rigidity.
Using " design of backbreaking " tunnel due to advance reservation creep faults changing of the relative positions amount, thus avoid tomography mistake
It is dynamic to be influenced caused by tunnel structure.However it backbreaks and will lead to tunnel-liner and section sudden enlargement and prominent occur in section of providing fortification against earthquakes
The case where so reducing, being damped along journey when such mutation can will increase air flowing, thus increase the critical wind velocity in tunnel,
So that flue gas discharge is more difficult or increases operation cost, simultaneously as " design of backbreaking " requires Tunnel Second Lining to be close to surpass
Hole wall after digging, it is therefore desirable to which individually designed section two of backbreaking serves as a contrast pattern and uses new formwork jumbo, to increase design, construction
Difficulty and cost.Using " hinged design " although enabling tunnel to adapt to creep faults to a certain extent by flexible connection
Displacement, but adapted to the tunnel of fault displcement, it may be difficult to guarantee the ride comfort of track, even transport to influence passenger comfort
Battalion's safety.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide sudden enlargements or contracting that section is not present in a kind of ventilation
It is small, and without individually designed secondary lining or using new formwork jumbo can guarantee in section Tunnel Second Lining of backbreaking
The track elevation of laying, ride comfort pass through the double-deck anti-fault structure in creep faults tunnel and construction method.Technical solution is as follows:
One kind passes through the double-deck anti-fault structure in creep faults tunnel, including setting is backbreak section at creep faults, and overall thickness with
The anti-tomography of the comparable outer layer of size of backbreaking, preliminary bracing and the anti-tomography of internal layer；The anti-tomography of outer layer is toughness material, and it is super to be close to tunnel
It digs contour line and sets；Preliminary bracing is hinged supporting flexible, is set on the inside of the anti-tomography of outer layer；The anti-tomography of internal layer is also toughness
Material is set on the inside of preliminary bracing；A section Tunnel Second Lining of backbreaking is set on the inside of the anti-tomography of internal layer, shape, size with
It backbreaks the identical normal through section Tunnel Second Lining of section both ends.
Further, the thickness of the anti-tomography of the outer layer is less than the anti-tomography of internal layer.
Further, the elasticity modulus of the anti-tomography of the outer layer and the anti-tomography of internal layer is 0.5 ~ 5Mpa.
One kind passing through the double-deck anti-faults in construction method in creep faults tunnel, comprising the following steps:
Step 1: backbreaking to across creep faults, the tunnel in segment length of providing fortification against earthquakes；
Step 2: in the tunnel clearance inner close fitting tunnel for section of backbreaking, contour line of backbreaking applies the anti-tomography of outer layer；
Step 3: applying preliminary bracing on the anti-tomography of outer layer；
Step 4: applying the anti-tomography of internal layer, and the total thickness of the anti-tomography of outer layer, preliminary bracing and the anti-tomography of internal layer in supporting in the early stage
It spends suitable with size of backbreaking；
Step 5: use builds section of backbreaking with normal through the identical formwork jumbo of section Tunnel Second Lining in the anti-tomography of internal layer
Tunnel Second Lining.
The beneficial effects of the present invention are: the present invention backbreaks the shape of section Tunnel Second Lining, size with normal through section tunnel
Road secondary lining is identical, therefore the sudden enlargement or diminution of section are not present in ventilation, without individually designed secondary lining
Or the shortcomings that using new formwork jumbo, overcoming existing " design of backbreaking " well；Anti- tomography is with can allowing tomography two sides
Layer generates biggish dislocation and does not generate excessive influence to section Tunnel Second Lining of backbreaking, the secondary lining in section tunnel so that protection is backbreak
It builds and is not destroyed and guarantee the track elevation, the ride comfort that are laid in section Tunnel Second Lining of backbreaking etc..
Detailed description of the invention
Fig. 1 is that the present invention passes through the double-deck anti-fault structure schematic diagram in creep faults tunnel.
In figure: 1- hanging wall country rock；2- footwall country rock；3- creep faults face；4- backbreak after tunnel contour line；
The anti-tomography of 5- outer layer；6- preliminary bracing；The anti-tomography of 7- internal layer；8- backbreaks a section Tunnel Second Lining；9- is normal through section tunnel two
Secondary lining cutting.
Specific embodiment
The present invention is described in further details in the following with reference to the drawings and specific embodiments.As shown in Figure 1, one kind pass through it is compacted
The double-deck anti-fault structure in slip fault tunnel, which is characterized in that backbreak at creep faults section including setting, and overall thickness with backbreak
The anti-tomography 5 of the comparable outer layer of size, preliminary bracing 6 and the anti-tomography 7 of internal layer；The anti-tomography 5 of outer layer is toughness material, and it is super to be close to tunnel
It digs contour line 4 and sets；Preliminary bracing 6 is hinged supporting flexible, is set to anti-5 inside of tomography of outer layer；The anti-tomography 7 of internal layer is also
Toughness material is set to 6 inside of preliminary bracing；Section Tunnel Second Lining 8 of backbreaking is set on the inside of the anti-tomography 7 of internal layer, shape,
Size is identical normal through section Tunnel Second Lining 9 as section both ends of backbreaking, is connected on longitudinal direction.
Since the shape for section Tunnel Second Lining 8 of backbreaking, size are identical as normal through section Tunnel Second Lining 9,
The sudden enlargement or diminution of section are not present in ventilation, without individually designed secondary lining or uses new formwork jumbo.
The shortcomings that overcoming existing " design of backbreaking " well.
The thickness of the anti-tomography 5 of outer layer should be less than the anti-tomography 7 of internal layer, while should select that elasticity modulus is smaller and toughness is preferable
Material.The elasticity modulus of materials that the present embodiment is chosen is 0.5 ~ 5Mpa.The thickness of the anti-tomography 5 of outer layer is less than the anti-tomography 7 of internal layer,
Since anti-5 thickness of tomography of outer layer is smaller, therefore preliminary bracing 6 is facilitated to play the effect for maintaining adjoining rock stability rapidly.Work as creep faults
When the changing of the relative positions occurs, the anti-tomography 5 of outer layer is pressurized first.Since anti-5 elasticity modulus of tomography of outer layer is smaller, a level pressure can be undertaken
Compressive deformation occurs for power to become the buffer layer between country rock and just branch 6.If fault movement continues to develop, so that outer layer is anti-disconnected
When 5 deformation of layer is larger, it will so that just branch 6 is also subjected to biggish pressure, the pressure of the stratum creep changing of the relative positions be will be transmitted to just at this time
On the anti-tomography 7 of internal layer between branch 6 and section Tunnel Second Lining 8 of backbreaking.The property of the anti-tomography 7 of internal layer and anti-5 phase of tomography of outer layer
Seemingly, it plays that mould is smaller and toughness is more preferable, therefore can allow to generate biggish deformation and section Tunnel Second Lining 8 of backbreaking is not generated
Excessive influence.To protect section Tunnel Second Lining 8 of backbreaking not destroyed and guaranteed in 8 middle berth of section Tunnel Second Lining of backbreaking
If track elevation, ride comfort etc..
The present invention passes through the double-deck anti-faults in construction method in creep faults tunnel, comprising the following steps:
Step 1: backbreaking to across creep faults, the tunnel in segment length of providing fortification against earthquakes；
Step 2: in the tunnel clearance inner close fitting tunnel for section of backbreaking, contour line 4 of backbreaking applies the anti-tomography 5 of outer layer；
Step 3: applying preliminary bracing 6 on the anti-tomography 5 of outer layer；
Step 4: applying the anti-tomography 7 of internal layer in supporting in the early stage 6, and the anti-tomography 5 of outer layer, preliminary bracing 6 and the anti-tomography 7 of internal layer
Overall thickness is suitable with size of backbreaking；
Step 5: use builds in the anti-tomography 7 of internal layer and backbreaks with normal through the identical formwork jumbo of section Tunnel Second Lining 9
Section Tunnel Second Lining 8.
Claims (4)
1. one kind passes through the double-deck anti-fault structure in creep faults tunnel, which is characterized in that backbreak including being arranged at creep faults
Section, and overall thickness and the backbreak anti-tomography of the comparable outer layer of size (5), preliminary bracing (6) and the anti-tomography of internal layer (7)；Outer layer is anti-disconnected
Layer (5) is toughness material, is close to tunnel and backbreaks contour line (4) and set；Preliminary bracing (6) is hinged supporting flexible, is set to
On the inside of the anti-tomography of outer layer (5)；The anti-tomography of internal layer (7) is also toughness material, is set on the inside of preliminary bracing (6)；It backbreaks a section tunnel
Secondary lining (8) is set on the inside of the anti-tomography of internal layer (7), and shape, size are with section both ends of backbreaking normal through section tunnel two
Secondary lining cutting (9) is identical.
2. according to claim 1 pass through the double-deck anti-fault structure in creep faults tunnel, which is characterized in that the outer layer is anti-
The thickness of tomography (5) is less than the anti-tomography of internal layer (7).
3. according to claim 1 pass through the double-deck anti-fault structure in creep faults tunnel, which is characterized in that the outer layer is anti-
The elasticity modulus of tomography (5) and the anti-tomography of internal layer (7) is 0.5 ~ 5Mpa.
4. one kind passes through the double-deck anti-faults in construction method in creep faults tunnel, which comprises the following steps:
Step 1: backbreaking to across creep faults, the tunnel in segment length of providing fortification against earthquakes；
Step 2: in the tunnel clearance inner close fitting tunnel for section of backbreaking, contour line (4) of backbreaking applies the anti-tomography of outer layer (5)；
Step 3: preliminary bracing (6) are applied on the anti-tomography of outer layer (5)；
Step 4: the anti-tomography of internal layer (7), and the anti-tomography of outer layer (5), preliminary bracing (6) and internal layer are applied in supporting in the early stage (6)
The overall thickness of anti-tomography (7) is suitable with size of backbreaking；
Step 5: use is built in the anti-tomography of internal layer (7) with normal through the identical formwork jumbo of section Tunnel Second Lining (9)
A section Tunnel Second Lining of backbreaking (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910710038.0A CN110374628A (en) | 2019-08-02 | 2019-08-02 | One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910710038.0A CN110374628A (en) | 2019-08-02 | 2019-08-02 | One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method |
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| Publication Number | Publication Date |
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| CN110374628A true CN110374628A (en) | 2019-10-25 |
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|---|---|---|---|
| CN201910710038.0A Pending CN110374628A (en) | 2019-08-02 | 2019-08-02 | One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065432A (en) * | 2020-09-14 | 2020-12-11 | 浙江华东工程咨询有限公司 | Tunnel structure penetrating through movable fault fracture zone and construction method thereof |
| CN116006213A (en) * | 2023-01-10 | 2023-04-25 | 广州大学 | Shock insulation structure of shield tunnel and construction method |
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