CN207004532U - A kind of draining portal structure suitable for water rich strata - Google Patents
A kind of draining portal structure suitable for water rich strata Download PDFInfo
- Publication number
- CN207004532U CN207004532U CN201720693159.5U CN201720693159U CN207004532U CN 207004532 U CN207004532 U CN 207004532U CN 201720693159 U CN201720693159 U CN 201720693159U CN 207004532 U CN207004532 U CN 207004532U
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- Prior art keywords
- portal
- hole
- headwall
- palisades
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000002689 soil Substances 0.000 claims description 9
- 239000011378 shotcrete Substances 0.000 claims description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 7
- 239000004567 concrete Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000004746 geotextile Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
A kind of draining portal structure suitable for water rich strata, with the strand, sheet, tubulose water burst of effective ejectment water rich strata, the smooth ejectment of underground water is gone out after ensuring portal headwall, and is easy to overhaul drainage system and safeguarded, and ensures portal end wall structure stress safety.Including the portal headwall being arranged at outside the palisades of hole, osculum is arranged at intervals on the hole palisades, each osculum is extended from hole palisades into stratum.The wall back of the portal headwall is arranged at intervals protrusion and the supporting part closely connected with hole palisades backward, and drainage space is formed between the external portal headwall wall back of the body of each supporting part and hole palisades.The portal headwall is outer to set gutter in two bottom sides, and drainage space bottom sets the rhone being connected with gutter.The hole palisades, portal headwall are fixedly connected to form hole supporting and retaining system system.
Description
Technical field
It the utility model is related to Tunnel Engineering, more particularly to a kind of draining portal structure suitable for water rich strata.
Background technology
Tunnel portal is tunnel portal bricklaying lining cutting and is subject to the supporting construction of building decoration.It contacts lining cutting and road
Moat, is the chief component of whole tunnel structure, and the mark of tunnel's entrance and exit.Portal structure pattern includes pillar, ear
Wall, step, voltage bias type open cut tunnel portal and single pressure type open cut tunnel portal etc., its main function are that slope, portal headwall are faced upward in supporting and retaining system front
The Water And Earth Pressures of behind, slope stabilization is faced upward in holding, and domatic charge for remittance is deflected from into tunnel, ensures the safety of hole circuit.Portal for
Ensure in-cavity construction safety and tunnel normal operation have the function that it is important.
Portal headwall bears hole headwall behind Water And Earth Pressures, and portal headwall should be examined and calculate its wall body cross-sectional strength, ground is held
Loading capability and stability etc..To reduce effect of the water pressure to portal structure, weeper drain net is set after tunnel portal headwall, will
Underground water ejectment is to tunnel drainage lateral sulcus after headwall.In the alpine region of karst water development, tunnel portal, which excavates, often discloses big
Stratiform or strand water burst, or even Karst Pipeline Water, Tunnel Portal Structures are subjected to larger water and soil load, when headwall behind water without
When the quick ejectment of method comes out, portal end wall structure will face water drenching at the top of portal, the partial failure of portal headwall, overturning danger
Danger, causes greatly to destroy to operation security.
Referring to Figures 1 and 2, portal headwall solves drainage problem using setting weeper drain net behind at present, and draining is blind
Ditch net is made up of vertical drainage french drain and transverse drainage french drain, and vertical drainage french drain and transverse drainage french drain use outsourcing geotextiles
Hollow plastic weeper drain, its vertical and horizontal spacing is generally 3m.Transverse drainage french drain is inclined with the gradient not less than 30% after headwall
To vertical french drain, weeper drain at road bed height using drainpipe (Pipe) it is discharged into lateral sulcus.Headwall french drain will
Ask and set mesopore, in the soil body grooving bury, vertical drainage french drain is connected with transverse drainage french drain using joint, outer paving geotextiles
(being not less than 300g per square meter total amount), then pour headwall or barrier wall structure concrete.
Traditional portal headwall french drain net draining is only applicable to the seldom situation of headwall behind underground water, and french drain cloth be present
If construction quality is poor, the problems such as french drain priming hole is easily blocked, and weeper drain can not be overhauled and safeguarded.Southwest Mountainous Areas karst water development
Regional underground water often results in serious destruction to tunnel construction and operation, and the problem of groundwater of hole portal headwall behind is to tunnel
Road construction causes very big influence, and a kind of portal pattern beneficial to tunnel headwall behind ground water discharge turns into skill urgently to be resolved hurrily
Art problem.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of draining portal structure suitable for water rich strata, with
The strand of effective ejectment water rich strata, sheet, tubulose water burst, it is ensured that the smooth ejectment of underground water is gone out after portal headwall, and is easy to
Drainage system is overhauled and safeguarded, and ensures portal end wall structure stress safety.
Technical scheme is as follows used by the utility model solves its technical problem：
A kind of draining portal structure suitable for water rich strata of the present utility model, including the hole being arranged at outside the palisades of hole
Door headwall, it is characterized in that：Osculum is arranged at intervals on the hole palisades, each osculum is extended from hole palisades into stratum；
The wall back of the portal headwall is arranged at intervals protrusion and the supporting part closely connected with hole palisades backward, in the external hole of each supporting part
Drainage space is formed between the door headwall wall back of the body and hole palisades；The portal headwall is outer to set gutter, draining in two bottom sides
Space bottom sets the rhone being connected with gutter；The hole palisades, portal headwall are fixedly connected to form hole supporting and retaining system
System.
The beneficial effects of the utility model are, by being drilled with osculum by water rich strata stratiform or the ejectment of strand water burst to hole
Door headwall behind, forms larger drainage space, it can be ensured that the underground of portal headwall behind between portal headwall and portal palisades
The smooth ejectment of water is gone out, and reduces the risk that portal topples or destroyed；Reserved drainage space is big, and drainage channel is not easy to block up during operation
Plug, may further enter into portal headwall by rhone maintainer and checks drainage system situation behind, it is convenient to drainage system
Overhauled and safeguarded.
Brief description of the drawings
This specification includes following five width accompanying drawing：
Fig. 1 is that portal headwall behind weeper drain arranges front schematic view in existing portal structure；
Fig. 2 is that portal headwall behind weeper drain arranges schematic longitudinal section in existing portal structure；
Fig. 3 is a kind of front schematic view of draining portal structure suitable for water rich strata of the utility model；
Fig. 4 is a kind of profile of draining portal structure suitable for water rich strata of the utility model；
Fig. 5 is a kind of part sectioned view of draining portal structure suitable for water rich strata of the utility model；
Component and corresponding mark are shown in figure：Drainpipe 1, vertical drainage french drain 2, transverse drainage french drain 3, geotextile layer
4th, portal headwall 10, rhone 12, drainage space 13, supporting part 14, energy dissipation tank 15, hole palisades 20, osculum 21, injection are mixed
Solidifying soil layer 22, soil nailing 23.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Reference picture 3 and Fig. 4, a kind of draining portal structure suitable for water rich strata of the present utility model, including be arranged at
Portal headwall 10 outside hole palisades 20.Osculum 21 is arranged at intervals on the hole palisades 20, each osculum 21 is by hole rock
Wall 20 extends into stratum, and osculum 21 joins stratum underground water ejectment, lowering of watertable, the physical mechanics for improving the soil body
Number.The wall back of the portal headwall 10 is arranged at intervals protrusion and the supporting part 14, Yu Gezhi closely connected with hole palisades 20 backward
Drainage space 13 is formed between the external wall of portal headwall 10 back of the body in support part 14 and hole palisades 20.The portal headwall 10 it is outer in
Two bottom sides set sump 11, and the bottom of drainage space 13 sets the rhone 12 being connected with sump 11.The hole rock
Wall 20, portal headwall 10 are fixedly connected to form hole supporting and retaining system system.By the osculum 21 that is drilled with by water rich strata water, stratiform or
The ejectment of strand water burst behind, forms larger drainage space 13 to portal headwall 10 between portal headwall 10 and portal palisades 20,
It can ensure that the smooth ejectment of underground water of the behind of portal headwall 10 is gone out, reduce the risk that portal topples or destroyed, protect and be easy to
Drainage system is overhauled and safeguarded.
Reference picture 4 and Fig. 5, the surface of hole palisades 20 set shotcrete layer 22 to be used as safeguard structure, and laterally,
Vertical to be arranged at intervals soil nailing 23, each rear portion of soil nailing 23 is anchored into the stratum after hole palisades 20, anterior then anchor into gunite concrete
Layer 22, or anchored into through supporting part 14 in the body of portal headwall 10.
Reference picture 4, energy dissipation tank 15 is set between the external port of rhone 12 and sump 11.
In high mountain region of FuShui, especially karst water development area, it is commonly present Portal Section rich water, water burst and sprays water with high pressure
Situation, general Tunnel Portal Structures can not effectively drain a large amount of underground water, cause tunnel portal top during constructing tunnel or operation
Water drenching, portal headwall cracking destruction, interrupt the harm such as operation.Usually solve problem of groundwater, built using in tunnel side
The scheme of drain cavern, but the drain cavern scheme construction period is longer, and fund input is big.One kind of the present utility model is with being applied to rich water
The draining portal structure of layer both can effectively solve the problems, such as the underground water ejectment of tens meters of hole scope, have construction is simple again, keep away
The advantages of exempting to set up drain cavern, great amount of investment can be saved, there are significant economic results in society.
It is described above simply to explain through diagrams the one of a kind of draining portal structure suitable for water rich strata of the utility model
A little principles, it is not intended to the utility model being confined in shown and described concrete structure and the scope of application, thus it is every all
The corresponding modification that may be utilized and equivalent, belong to the apllied the scope of the claims of the utility model.
Claims (3)
1. a kind of draining portal structure suitable for water rich strata, including it is arranged at the portal headwall of hole palisades (20) outside
(10), it is characterized in that：Osculum (21) is arranged at intervals on the hole palisades (20), each osculum (21) is by hole palisades (20)
Extend into stratum；The wall back of the portal headwall (10) is arranged at intervals protrusion and the branch closely connected with hole palisades (20) backward
Support part (14), drainage space is formed between external portal headwall (10) the wall back of the body of each supporting part (14) and hole palisades (20)
(13)；The portal headwall (10) sets sump (11) in two bottom sides outside, and drainage space (13) bottom is set and sump
(11) rhone (12) being connected；The hole palisades (20), portal headwall (10) are fixedly connected to form hole supporting and retaining system system.
2. a kind of draining portal structure suitable for water rich strata as claimed in claim 1, it is characterized in that：The hole palisades
(20) surface sets shotcrete layer (22) be used as safeguard structure, and laterally, vertical interval setting soil nailing (23), each soil nailing
(23) rear portion is anchored into the stratum after hole palisades (20), anterior then anchor into shotcrete layer (22), or through supporting part
(14) anchor into portal headwall (10) body.
3. a kind of draining portal structure suitable for water rich strata as claimed in claim 1, it is characterized in that：The rhone
(12) energy dissipation tank (15) is set between external port and sump (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720693159.5U CN207004532U (en) | 2017-06-15 | 2017-06-15 | A kind of draining portal structure suitable for water rich strata |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720693159.5U CN207004532U (en) | 2017-06-15 | 2017-06-15 | A kind of draining portal structure suitable for water rich strata |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207004532U true CN207004532U (en) | 2018-02-13 |
Family
ID=61446721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720693159.5U Expired - Fee Related CN207004532U (en) | 2017-06-15 | 2017-06-15 | A kind of draining portal structure suitable for water rich strata |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207004532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218057A (en) * | 2017-06-15 | 2017-09-29 | 中铁二院工程集团有限责任公司 | A kind of draining portal structure suitable for water rich strata |
| CN110924434A (en) * | 2019-12-12 | 2020-03-27 | 岳阳市公路桥梁基建总公司 | UHPC (ultra high performance polycarbonate) fabricated tunnel open cut tunnel lining structure and construction method |
-
2017
- 2017-06-15 CN CN201720693159.5U patent/CN207004532U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218057A (en) * | 2017-06-15 | 2017-09-29 | 中铁二院工程集团有限责任公司 | A kind of draining portal structure suitable for water rich strata |
| CN107218057B (en) * | 2017-06-15 | 2024-01-05 | 中铁二院工程集团有限责任公司 | Drainage portal structure suitable for water-rich stratum |
| CN110924434A (en) * | 2019-12-12 | 2020-03-27 | 岳阳市公路桥梁基建总公司 | UHPC (ultra high performance polycarbonate) fabricated tunnel open cut tunnel lining structure and construction method |
| CN110924434B (en) * | 2019-12-12 | 2021-06-01 | 岳阳市公路桥梁基建总公司 | UHPC (ultra high performance polycarbonate) fabricated tunnel open cut tunnel lining structure and construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 |