CN108798698A - A kind of shield tunnel construction passing through horizontal dislocation active fault - Google Patents
A kind of shield tunnel construction passing through horizontal dislocation active fault Download PDFInfo
- Publication number
- CN108798698A CN108798698A CN201810846785.2A CN201810846785A CN108798698A CN 108798698 A CN108798698 A CN 108798698A CN 201810846785 A CN201810846785 A CN 201810846785A CN 108798698 A CN108798698 A CN 108798698A
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- active fault
- dislocation
- tunnel
- shield tunnel
- isolation channel
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000002955 isolation Methods 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 17
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000003325 tomography Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of shield tunnel constructions passing through horizontal dislocation active fault, the shield tunnel construction includes tunnel agent structure (7) and the flexible energy dissipation structure for being arranged in tunnel agent structure (7) surrounding, in section of coming to nothing (6) of the flexible energy dissipation structure setting residing for active fault (1), it includes the loosening layer (9) for being vertically arranged at the isolation channel (5) of tunnel agent structure (7) both sides and being horizontally placed on tunnel agent structure (7) top and bottom, isolation channel (5) top connects with ground or water-bed face (8), the top top for loosening layer (9) is original bedrock formation (10) or soil layer (11), bottom end lower part is original bedrock formation (10).The shield tunnel construction of the present invention ensure that structure safety when shield driven tunnel crossing horizontal dislocation active fault, have high economy, improve constructing tunnel and build technical merit under the premise of excessively not increasing shield tunnel headroom.
Description
Technical field
The invention belongs to technical field of civil engineering, more particularly, to a kind of shield passing through horizontal dislocation active fault
Tunneling structure structure.
Background technology
Active fault refer to currently activity tomography, or in the recent period once had activity may without long future
Again movable tomography.In Tunnel Passing fault region, active fault region is especially passed through, due to Fault Creep or sudden
Earthquake can cause the region to generate certain dislocation amount, cause tunnel lateral direction failure by shear.
Existing many cases Tunnel Passing active fault case both at home and abroad, the existing burst changing of the relative positions type of active fault passed through also has compacted
Slip, 30~50cm of dislocation amount is differed, but is all passed through using Mining Method.Have " backbreaking " for the mentality of designing of active fault dislocation
Formula, such as Fig. 1 and Fig. 2, " hinged " formula, such as Fig. 3 and Fig. 4, " isolation energy dissipating " formula, as Fig. 5 and Fig. 6 is total to three categories form.Engineering is answered
In, in such a way that even three kinds of one of which or two kinds of combinations are used entirely, and " backbreaking " and " hinged " application is relatively more.It wears
More in the design of active fault Mining Method, the amount of backbreaking of " backbreaking " design is generally equivalent to active fault dislocation amount；" hinged " design one
As by the way that multiple tracks aseismatic joint (seam spacing 4~6m) is arranged, to make tunnel, the changing of the relative positions reaches design changing of the relative positions amount section by section；" isolation energy dissipating " is set
Meter is general to fill porous material (such as foam concrete) to prevent secondary lining from destroying in the early stage between supporting and secondary lining, fill out
It fills layer thickness and should be greater than Fault Dislocation amount.
Conventional Mining Method is designed according to " backbreaking ", and entire shield section need to all use expansion section, on Technical Economy
It is unreasonable, and the wide generally 1~2m of duct pieces of shield tunnel, inherently good " hinged " structure.But it is located at bedrock formation
Active fault to be crushed bandwidth general relatively narrow (20m or so is in the majority), when the active fault of shield driven tunnel crossing horizontal dislocation,
Under the premise of tunnel clearance is not increased excessively to ensure economy, tunnel how is prevented by " cutting " and ensures that seam waterproof is effective
It is still a great problem of the pendulum in face of project planner.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides a kind of horizontal dislocation active fault of passing through
Shield tunnel construction when its object is to solve the active fault of shield driven tunnel crossing horizontal dislocation, does not increase shield tunnel excessively
Road headroom, and can effectively prevent the problem of shield tunnel is by " cutting ".
To achieve the above object, the present invention provides a kind of shield tunnel construction passing through horizontal dislocation active fault, special
Sign is, which includes tunnel agent structure and the flexible energy dissipation knot that is arranged in around the tunnel agent structure
Structure；
The tunnel agent structure passes through the active fault of bedrock formation, and bedrock formation is divided into work by the active fault
Hanging wall and active fault lower wall are moved, disk is located above the active fault in the active fault, under the active fault
Disk is located at below the active fault, and disk exists with the active fault lower wall relative to the active fault in the active fault
Horizontal direction occurs to generate active fault dislocation amount when dislocation；
Flexible energy dissipation structure setting the coming to nothing in section residing for the active fault, the flexible energy dissipation structure packet
It includes the isolation channel for being vertically arranged at tunnel agent structure both sides and is horizontally placed on the tunnel agent structure top and bottom
The loosening layer in portion, the top top for loosening layer are original bedrock formation or soil layer, and bottom end lower part is original bedrock formation, institute
Isolation channel top is stated with ground or water-bed face to connect.
Further, the thickness of the isolation channel is no less than active fault dislocation amount described in three times.
Further, filling flexible material in the isolation channel, and the flexible material deformation modulus should be less than rock mass change
/ 10th of shape modulus.
Further, the isolation channel is close to the tunnel agent structure setting.
Further, the flexible material includes weak soil or medium coarse sand.
Further, the isolation channel direction along ng a path setting length=section of jurisdiction ring width × dislocation amount ÷ interannulars allow faulting of slab ends
Amount × safety coefficient.
Further, the isolation channel is constructed using piling or grooving mode.
Further, three times of the thickness for loosening layer not less than the active fault dislocation amount.
Further, the loosening layer is using the pre- blasting method construction in ground.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
(1) a kind of shield tunnel construction passing through horizontal dislocation active fault of the invention, flexible energy dissipation include vertical
It is set to the isolation channel of tunnel agent structure both sides and is horizontally placed on the loosening layer of tunnel agent structure top and bottom, it is described
The top top for loosening layer is original bedrock formation or soil layer, and bottom end lower part is original bedrock formation, isolation channel top and ground
Or water-bed face connects, and by the way that isolation channel is arranged and loosens layer, under the premise of excessively not increasing shield tunnel headroom, ensure that shield
Structure safety when structure Tunnel Passing horizontal dislocation active fault, has good economy, improves shield tunnel and build skill
Art is horizontal.
(2) thickness of a kind of shield tunnel construction passing through horizontal dislocation active fault of the invention, isolation channel should be many
In three times active fault dislocation amount, the flexible materials such as interior filling weak soil, medium coarse sand, and flexible material deformation modulus should be less than rock
/ 10th of body deformation modulus, and isolation channel is generally close to tunnel agent structure setting, forms good " flexible energy dissipation " knot
Structure reduces effect of the rock mass to the direct power of tunnel agent structure.
(3) a kind of shield tunnel construction passing through horizontal dislocation active fault of the invention, the isolation channel is along track side
It is to laying length：
L=D × Δ X/ Δs Y × a (1)
In formula：L：The laying length of isolation channel, unit m；
D：Section of jurisdiction ring width, unit m；
ΔX：Active fault dislocation amount, unit m；
ΔY：Interannular allows faulting of slab ends amount, unit m；
a：Safety coefficient, value range 1.5~2.
When there is horizontal direction dislocation, the dislocation for appearing in active fault range originally extends into isolation channel section paragraph,
Corresponding shield tunnel dislocation length becomes the length that the isolation channel is arranged from the active fault width, described in being not provided with
Isolation channel is compared, and shield interannular faulting of slab ends amount is greatly decreased, and section of jurisdiction interannular shearing resistance and hermetic seal requirement is reduced, for dislocation amount
Big tomography, change can not pass through pass through, and improve the adaptability of shield driven tunnel crossing active fault.
(4) a kind of shield tunnel construction passing through horizontal dislocation active fault of the invention, isolation channel can be from ground or water
Bottom surface is constructed, and using mechanical executions modes such as piling or grooving, is loosened layer and is located in shield tunnel vertical range, use ground
The pre- blasting method construction in face, improves construction efficiency, reduces construction operation cost.
Description of the drawings
Fig. 1 is status diagram of backbreaking before a kind of Tunnel Passing active fault dislocation in the prior art；
Fig. 2 is status diagram of backbreaking after a kind of Tunnel Passing active fault dislocation in the prior art；
Fig. 3 is hinged status diagram before a kind of Tunnel Passing active fault dislocation in the prior art；
Fig. 4 is hinged status diagram after a kind of Tunnel Passing active fault dislocation in the prior art；
Fig. 5 is isolation energy dissipating status diagram before a kind of Tunnel Passing active fault dislocation in the prior art；
Fig. 6 is isolation energy dissipating status diagram after a kind of Tunnel Passing active fault dislocation in the prior art；
Fig. 7 is that a kind of active fault of shield tunnel construction passing through horizontal dislocation active fault of the embodiment of the present invention is horizontal
Frontal plane schematic diagram occurs for dislocation；
Fig. 8 is that a kind of active fault of shield tunnel construction passing through horizontal dislocation active fault of the embodiment of the present invention is horizontal
Floor map after dislocation occurs；
Fig. 9 is a kind of transverse cross for the shield tunnel construction passing through horizontal dislocation active fault of the embodiment of the present invention.
In Fig. 1~Fig. 9, the same reference numeral indicates identical structure and part, wherein：1- active faults, 2- activities
Hanging wall, 3- active faults lower wall, 4- active faults dislocation amount, 5- isolation channels, 6- may come to nothing section, the tunnels 7- master
Body structure, the ground 8- or water-bed face, 9- loosen layer, the original basement rock structures of 10-, 11- soil layers.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Conflict is not constituted between this to can be combined with each other.
Fig. 9 is a kind of transverse cross for the shield tunnel construction passing through horizontal dislocation active fault of the embodiment of the present invention,
As shown in figure 9, this system includes tunnel agent structure 7 and the flexible energy dissipation structure that is arranged in around the tunnel agent structure 7.
Wherein, the tunnel agent structure 7 is traditional shield construction tunnel, and tunneling shield section of jurisdiction is general 1 to 2 meter wide, and section of jurisdiction is by steel
Reinforced concrete is made, and interannular permission faulting of slab ends amount should be arranged positioned at the section of jurisdiction in the section 6 that may come to nothing, right according to faulting of slab ends amount
Interannular shear structure is corresponding with gasket structure progress to be handled；The flexible energy dissipation structure setting may come to nothing in described
In section 6, the flexible energy dissipation structure includes being vertically arranged at the isolation channel 5 of shield tunnel both sides and being horizontally placed on shield tunnel
Loosening layer 9 at the top and bottom of road, the top top for loosening layer is original bedrock formation 10 or soil layer 11, and bottom end lower part is
Original bedrock formation 10,5 top of the isolation channel connect with ground or water-bed face 8.By the way that isolation channel is arranged and loosens layer, formed
Good " flexible energy dissipation " structure ensure that shield driven tunnel crossing level under the premise of excessively not increasing shield tunnel headroom
Structure safety when dislocation active fault, has good economy, improves shield tunnel and build technical merit.
As shown in Figure 7 and Figure 8, the tunnel agent structure 7 passes through the active fault 1 of bedrock formation, and the activity is disconnected
Bedrock formation is divided into disk 2 and active fault lower wall 3 in active fault by layer 1, and disk 2 is disconnected positioned at the activity in the active fault
1 top of layer, the active fault lower wall 3 are located at 1 lower section of the active fault；After horizontal dislocation occurs, the active fault 2
Dislocation occurs in the horizontal direction relative to the active fault 1 with the active fault 3, generates active fault dislocation amount 4.
As shown in Figure 7, Figure 8 and Figure 9, the thickness of the isolation channel 5 should be no less than active fault dislocation amount 4 described in three times,
Its bottom surface should be less than shield tunnel bottom surface, the flexible materials such as internal filling weak soil, medium coarse sand, and flexible material deformation modulus is answered
Less than 1/10th of Deformation Module of Rock Mass, the isolation channel 5 is generally close to the tunnel agent structure 7 and is arranged, to reduce rock
Effect of the body to the direct power of tunnel agent structure.
5 direction along ng a path of the isolation channel is arranged length and is generally determined according to the active fault dislocation amount 4, the isolation
Slot (5) direction along ng a path laying length is：
L=D × Δ X/ Δs Y × a (1)
In formula：L：The laying length of the isolation channel (5), unit m；
D：Section of jurisdiction ring width, unit m；
ΔX：The active fault dislocation amount (4), unit m；
ΔY：Interannular allows faulting of slab ends amount, unit m；
a：Safety coefficient, value range 1.5~2.
When earthquake causes active fault upper lower burrs rock mass the dislocation of horizontal direction occur, it is disconnected that the activity was appeared in originally
The dislocation of 1 range of layer extends into 5 section paragraph of the isolation channel, corresponding dislocation siding-to-siding block length by the active fault 1 width
Degree becomes the length that the isolation channel 5 is arranged, by the way that the isolation channel 5, compared with being not provided with the isolation channel 5, shield is arranged
Interannular faulting of slab ends amount is greatly decreased, and reduces section of jurisdiction interannular shearing resistance and hermetic seal requirement.For the big tomography of dislocation amount, change can not
It passes through as that can pass through, improves the adaptability of shield driven tunnel crossing active fault.
The thickness for loosening layer 9 is not less than three times of the active fault dislocation amount 4, when horizontal position occurs in active fault
It staggers the time, plays the role of generating level of flexibility deformation.
The isolation channel 5 can construct from the ground or water-bed face 8, using mechanical executions modes such as piling or grooving,
In filling the flexible materials such as weak soil, medium coarse sand in slot, the loosening layer 9 is constructed using the pre- blasting method in ground, and in shield tunnel
Before road is built, in constructing in designed lines, construction efficiency is improved compared with traditional construction operating type, reduces construction operation
Cost.
A kind of shield tunnel construction passing through horizontal dislocation active fault of the present invention, by the tunnel agent structure
The isolation channel 5 is arranged in 7 both sides, and the horizontally arranged loosening layer 9 will appear in 1 range of the active fault originally
Dislocation extends into 5 section paragraph of the isolation channel, and corresponding dislocation siding-to-siding block length becomes described from the width of the active fault 1
The length of isolation channel 5 so that 7 deflection of tunnel agent structure of unit length is compared with the change before being not added with the isolation channel 5
Shape amount greatly reduces, and shield tunnel radial force situation is made to improve.It plays and works as shield driven tunnel crossing horizontal dislocation active fault
When, do not increase shield tunnel headroom not only, and can effectively prevent its effect by the stress " cutting " of the active fault 1.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of shield tunnel construction passing through horizontal dislocation active fault, which is characterized in that the shield tunnel construction includes tunnel
Road agent structure (7) and the flexible energy dissipation structure being arranged in around the tunnel agent structure (7)；Wherein,
The tunnel agent structure (7) passes through the active fault (1) of bedrock formation, and the active fault (1) is by bedrock formation
It is divided into disk in active fault (2) and active fault lower wall (3), disk (2) is located in the active fault (1) in the active fault
Side, the active fault lower wall (3) are located at below the active fault (1), and disk (2) and the activity are disconnected in the active fault
Layer lower wall (3) occurs to generate active fault dislocation amount (4) when dislocation relative to the active fault (1) in the horizontal direction；
In section of coming to nothing (6) of the flexible energy dissipation structure setting residing for the active fault (1), the flexible energy dissipation structure
Including being vertically arranged at the isolation channel (5) of tunnel agent structure (7) both sides and being horizontally placed on the tunnel agent structure
(7) top and bottom loosening layer (9), it is described loosen layer (9) top top be original bedrock formation (10) or soil layer (11),
Bottom end lower part is original bedrock formation (10), and isolation channel (5) top connects with ground or water-bed face (8).
2. a kind of shield tunnel construction passing through horizontal dislocation active fault according to claim 1, which is characterized in that institute
The thickness for stating isolation channel (5) is no less than active fault dislocation amount (4) described in three times.
3. a kind of shield tunnel construction passing through horizontal dislocation active fault according to claim 1, which is characterized in that institute
The interior filling flexible material of isolation channel (5) is stated, and the flexible material deformation modulus should be less than 1/10th of Deformation Module of Rock Mass.
4. a kind of shield tunnel construction passing through horizontal dislocation active fault according to any one of claim 1-3,
It is characterized in that, the isolation channel (5) is close to tunnel agent structure (7) setting.
5. a kind of shield tunnel construction passing through horizontal dislocation active fault according to claim 3, which is characterized in that institute
It includes weak soil or medium coarse sand to state flexible material.
6. a kind of shield tunnel construction passing through horizontal dislocation active fault according to any one of claim 1-4,
It is characterized in that, isolation channel (5) the direction along ng a path laying length is：
L=D × Δ X/ Δs Y × a (1)
In formula：L：The laying length of the isolation channel (5), unit m；
D：Section of jurisdiction ring width, unit m；
ΔX：The active fault dislocation amount (4), unit m；
ΔY：Interannular allows faulting of slab ends amount, unit m；
a：Safety coefficient, value range are 1.5~2.
7. a kind of shield tunnel construction passing through horizontal dislocation active fault according to any one of claim 1-4 or described in 6,
It is characterized in that, the isolation channel (5) is constructed using piling or grooving mode.
8. a kind of shield tunnel construction passing through horizontal dislocation active fault according to claim 1, which is characterized in that institute
The thickness for stating loosening layer (9) is not less than three times of the active fault dislocation amount (4).
9. a kind of shield tunnel construction passing through horizontal dislocation active fault according to claim 1 or 8, feature exist
In the loosening layer (9) is using the pre- blasting method construction in ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810846785.2A CN108798698B (en) | 2018-07-27 | 2018-07-27 | Shield tunnel structure crossing horizontal dislocation movable fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810846785.2A CN108798698B (en) | 2018-07-27 | 2018-07-27 | Shield tunnel structure crossing horizontal dislocation movable fault |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798698A true CN108798698A (en) | 2018-11-13 |
| CN108798698B CN108798698B (en) | 2023-06-02 |
Family
ID=64078512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810846785.2A Active CN108798698B (en) | 2018-07-27 | 2018-07-27 | Shield tunnel structure crossing horizontal dislocation movable fault |
Country Status (1)
| Country | Link |
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| CN (1) | CN108798698B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374628A (en) * | 2019-08-02 | 2019-10-25 | 西南交通大学 | One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method |
| CN113605926A (en) * | 2021-08-26 | 2021-11-05 | 西南交通大学 | Cross-fault tunnel segment lining passive vector type flexible joint structure |
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| CN108222950A (en) * | 2018-02-07 | 2018-06-29 | 宁波市交通规划设计研究院有限公司 | Diversion water-conveyance tunnel penetrates through method for correcting error under a kind of weak broken wall rock geological conditions |
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| EP0142857A2 (en) * | 1983-11-21 | 1985-05-29 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374628A (en) * | 2019-08-02 | 2019-10-25 | 西南交通大学 | One kind passing through the double-deck anti-fault structure in creep faults tunnel and construction method |
| CN110374628B (en) * | 2019-08-02 | 2024-05-31 | 西南交通大学 | Double-layer anti-fault structure of tunnel penetrating through creeping fault and construction method |
| CN113605926A (en) * | 2021-08-26 | 2021-11-05 | 西南交通大学 | Cross-fault tunnel segment lining passive vector type flexible joint structure |
| CN113605926B (en) * | 2021-08-26 | 2022-06-21 | 西南交通大学 | Cross-fault tunnel segment lining passive vector type flexible joint structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108798698B (en) | 2023-06-02 |
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