CN105986836B - A kind of single-track railway tunnel substrate guarded drainage strengthen the system - Google Patents
A kind of single-track railway tunnel substrate guarded drainage strengthen the system Download PDFInfo
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- CN105986836B CN105986836B CN201610419973.8A CN201610419973A CN105986836B CN 105986836 B CN105986836 B CN 105986836B CN 201610419973 A CN201610419973 A CN 201610419973A CN 105986836 B CN105986836 B CN 105986836B
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- 239000000758 substrate Substances 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000011435 rock Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- 239000004745 nonwoven fabric Substances 0.000 claims description 18
- 239000011148 porous material Substances 0.000 claims description 9
- 239000003566 sealing material Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 244000025254 Cannabis sativa Species 0.000 claims description 4
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 4
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 4
- 235000009120 camo Nutrition 0.000 claims description 4
- 235000005607 chanvre indien Nutrition 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000011487 hemp Substances 0.000 claims description 4
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 239000004588 polyurethane sealant Substances 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000035515 penetration Effects 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to waterproof and water drainage system fields, more particularly to a kind of single-track railway tunnel substrate guarded drainage strengthen the system, it is characterized by: the inside two sides of the Tunnel Base are provided with ditch in tunnel, the buried weeper drain longitudinally disposed along Tunnel Base is arranged in the tunnel outside the lower section lining cutting in ditch, the buried weeper drain is internally provided with permeable layer, longitudinal drainage blind pipe has been longitudinally arranged along buried weeper drain in the permeable layer, the transverse drainage blind pipe is arranged along the transverse direction of Tunnel Base and the buried weeper drain of two sides is connected to form latticed ring longitudinal drainage blind pipe combined drain system by it；Set pressure reduction well in the buried weeper drain, the well bore of the pressure reduction well passes through tunnel the interior lining of ditch bottom two and first branch structure is goed deep into country rock.Tunnel solves the unfavoured state of Tunnel Base rich water pressure-bearing by substrate draining and the double approach of pressure release, more advantageous to structure stress, more advantageous to the long-term operation security in tunnel.
Description
Technical field
The invention belongs to the anti-rows outside waterproof and water drainage system field more particularly to a kind of single-track railway tunnel substrate just branch inverted arch
Water strengthen the system.
Background technique
Railway tunnel generallys use composite lining structural shape at present, and full packet or half packet are set between preliminary bracing and two linings
Watertight insulation is disposed with the outer drainage system of tunnel-liner on the outside of watertight insulation, the tunnel hole Nei You inner water drainage system, this
Three has collectively constituted the waterproof and water drainage system in tunnel.
Tunnel waterproof and water drainage system Normal practice is as follows: layer of non-woven fabric+splash guard, interval one are laid between first branch and two linings
Circumferential blind pipe is arranged in set a distance, or directly uses drain bar band, and longitudinal drainage blind pipe is arranged on the top of abutment wall basis behind,
Circumferential blind pipe is connected to using three-way connection with longitudinal blind pipe, and longitudinal blind pipe is spaced apart to set lateral water guide blind pipe introducing tunnel
Medial sulcus forms complete vertically and horizontally drainage system.
Wherein waterproof system is divided into water plate in the air by inverted arch, and is divided into half packet waterproof and full packet waterproof.It has been generally acknowledged that
Full packet form waterproof will cause two linings and bear hydraulic pressure for a long time, leakage disease easily occurs and reduces the service life.It is more in railway tunnel
Using the form of half packet waterproof.
Drainage system divides in outside hole and hole, is normally only to be realized outside hole by the ring longitudinal direction blind pipe outside lining cutting, longitudinal blind
Pipe position is located at abutment wall basis behind top, does not set the following drainage channel in tunnel bottom.Water is arranged in hole inner water drainage system, usually two sides
Ditch, to double track tunnel, standing to be equipped with Central drain when water is larger, most of Central drain is located at filled layer above inverted arch
It is interior, to severe cold area, some Central drains take it is buried, be located at first branch inverted arch below.
But for single-track railway tunnel, especially heavy haul railway, it is different from double track tunnel, if the also lower section in the middle part of inverted arch
Central drain is set, the globality of railway roadbed will be weakened significantly, it is also unfavorable to inverted arch structure stress.Therefore, simple center is buried
Ditch is poor to single-track railway tunnel adaptability, need to consider to improve.
Meanwhile above-mentioned conventional guarded drainage mode, be only capable of being discharged longitudinal blind pipe with the water of upper bit, to below longitudinal blind pipe with
And the water under inverted arch, it can not be discharged；And wrap due to half, without waterproof layer below inverted arch, when the following country rock in tunnel bottom is soft stratum, or
When with the characteristic for meeting water softening, the diseases such as substrate rich water can frequently result in differential settlement, stratum depression of bearing force, rise soil
Evil.To heavy haul railway or high-speed railway, since the train operation frequency is high, maintenance Window time is short, and above-mentioned disease occur can be to fortune
Battalion makes a big impact.
Therefore, how the water of reasonable white-out tunnel bottom, be still that tunnel water handling designs the emphasis that should pay close attention to.
Based on above-mentioned premise, in single-track railway tunnel waterproof and drainage design, it is necessary to Tunnel Base waterproof and water drainage system into
Row is reinforced.It is exactly that tunnel bottom longitudinal direction blind pipe water below can not be discharged that problem is maximum in existing waterproof and drainage design, substrate
It is chronically at rich water state, hydraulic pressure is born in tunnel-liner.
Summary of the invention
In order to solve the problems, such as Tunnel Base rich water, the present invention, which implements, to reinforce Tunnel Base guarded drainage and increases pressure release to lead to
The design concept in road provides a kind of single-track railway tunnel substrate guarded drainage strengthen the system.
The technical scheme adopted by the invention is as follows:
A kind of single-track railway tunnel substrate guarded drainage strengthen the system, it is characterised in that: blind including Tunnel Base, transverse drainage
Pipe, the inside two sides of the Tunnel Base are provided with ditch in tunnel, are arranged with outside the lower section lining cutting in ditch in the tunnel
The buried weeper drain longitudinally disposed along Tunnel Base, the buried weeper drain are internally provided with permeable layer, the infiltration
It is longitudinally arranged longitudinal drainage blind pipe along buried weeper drain in layer, the transverse drainage blind pipe is set along the transverse direction of Tunnel Base
It sets and the buried weeper drain of two sides is connected to form latticed ring longitudinal drainage blind pipe combined drain system by it；The depth
It buries and sets pressure reduction well in weeper drain, the well bore of the pressure reduction well passes through tunnel interior ditch bottom two lining and first branch structure is deeply enclosed
In rock.
The outside of the Tunnel Base is successively laid with splash guard, non-woven fabrics, and the splash guard, non-woven fabrics are located at buried row
The top of water french drain.
Bottom in the buried weeper drain is provided with the drainage layer below permeable layer.
The permeable layer is metalling, and the drainage layer is coarse sands layer.
The pressure reduction well penetrates longitudinal drainage blind pipe.
Steel floral tube is buried in the pressure reduction well.
The nozzle absolute altitude of the steel floral tube is higher by tunnel the cross-section of river in ditch, and the steel floral tube is located at ditch in tunnel
It is not provided with pore on the lining of ditch bottom two and the tube wall of first branch inside configuration point in internal and tunnel, the steel floral tube is located at decompression
Pore is set on well and the tube wall of buried weeper drain inner part.
Gap is blocked with sealing material between the bottom surface of ditch in the steel floral tube and tunnel.
The sealing material uses polyurethane sealant and Bituminous hemp fiber.
The longitudinal drainage blind pipe, steel floral tube outside be enclosed with non-woven fabrics.
The invention has the benefit that
1, the present invention implements the design concept reinforced Tunnel Base guarded drainage and increase pressure release passage, that is, in tunnel
Buried weeper drain is set below ditch in the tunnel of substrate two sides, and the buried weeper drain in two sides is connected to by transverse drainage blind pipe；
Pressure reduction well separately is set in the buried weeper drain in tunnel two sides, one drain passage of inverted arch bottom hydraulic pressure is given, is in sole
Passive state, to weaken the harm of soft stratum substrate rich water significantly；
2, tunnel solves the unfavoured state of Tunnel Base rich water pressure-bearing, to knot by substrate draining and the double approach of pressure release
Structure stress is more advantageous, more advantageous to the long-term operation security in tunnel；
3, the present invention can dredge single-track railway tunnel bottom water pressure, avoid tunnel bottom bottom rich water pressure-bearing, in long-term DYNAMIC LOADING OF DRIVING TRAIN ON BRIDGES
Phenomena such as acting on lower substrate softening, rising soil, ensures train operation safety；
4, the buried weeper drain porosity in two sides is big, and drainability is strong, and major diameter longitudinal drainage is separately disposed in french drain
Blind pipe, wraps up in nonwoven cloth filter material outside longitudinal drainage blind pipe, spaced apart between the buried weeper drain in two sides to be provided with transverse direction
Blind pipe is drained, forms tunnel spacer screen trellis ring longitudinal drainage blind pipe combined drain system, even if locally blocking, water flow still may be used
By other Path reroutings, drainability and reliability are greatly improved；
5, pressure reduction well is longitudinally spaced-apart along buried weeper drain and sets, and penetrates longitudinal drainage blind pipe, with tunnel base
Bottom is connected with outer ring longitudinal drainage blind pipe combined drain system, increases the drain passage of Tunnel Base water；
6, pressure reduction well can be encrypted or be replaced according to operation phase service condition, and entire pressure relief system can play work always
With hole Nei Shui can also be drained by pressure reduction well even if lower loop longitudinal drainage blind pipe combined drain system locally blocks
Ditch；
7, ditch draining will not seep under recharge to Tunnel Base hereinafter, Tunnel Base guarded drainage strengthen the system and tunnel in tunnel
Ditch draining does not occur directly to contact in road, only when Tunnel Base pressure-bearing, is drained by pressure reduction well to ditch in tunnel；
8, entire tunnel bottom full width is laid with non-woven fabrics, splash guard, forms full packet system, and relatively half packet waterproof is to preventing tunnel
Substrate is risen soil advantageously.
Detailed description of the invention
Fig. 1 is that Tunnel Base reinforces waterproof and water drainage system diagrammatic cross-section in the present invention；
Fig. 2 is Tunnel Base drainage system floor map in the present invention；
Fig. 3 is the cross-sectional configuration schematic diagram of buried weeper drain in the present invention；
Fig. 4 is the organigram of steel floral tube in the present invention；
Fig. 5 is pressure reduction well hole sealing structure schematic diagram in the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
In figure, 1- Tunnel Base, in the tunnel 2- ditch, 3- transverse drainage blind pipe, the buried weeper drain of 4-, 5- permeable layer,
6- longitudinal drainage blind pipe, 7- pressure reduction well, 8- non-woven fabrics, 9- splash guard, 10- drainage layer, 11- steel floral tube, 12- pore, 13- sealing
Material, 14- non-woven fabrics, 15- polyurethane sealant, 16- Bituminous hemp fiber, 17- internal rail top surface, the not set pore section of 18-, 19- tunnel
Ditch bottom surface in road.
Embodiment
As shown in Figs. 1-5, a kind of single-track railway tunnel substrate guarded drainage strengthen the system, including Tunnel Base 1, transverse drainage
Blind pipe 3, the inside two sides of Tunnel Base 1 are provided with ditch 2 in tunnel, are arranged with edge in tunnel outside the lower section lining cutting in ditch 2
The longitudinally disposed buried weeper drain 4 of Tunnel Base 1, buried weeper drain 4 are internally provided with permeable layer 5, edge in permeable layer 5
Buried weeper drain 4 has been longitudinally arranged longitudinal drainage blind pipe 6, transverse drainage blind pipe 3 along Tunnel Base 1 lateral setting and
The connection of buried weeper drain 4 of two sides is formed latticed ring longitudinal drainage blind pipe combined drain system by it；Buried draining is blind
Set pressure reduction well 7 in ditch 4, the well bore of pressure reduction well 7 passes through tunnel interior 2 bottom two of ditch lining and first branch structure is goed deep into country rock.
The outside of Tunnel Base 1 is successively laid with splash guard 9, non-woven fabrics 8, and splash guard 9, non-woven fabrics 8 are located at buried draining
The top of french drain 4.
Bottom in buried weeper drain 4 is provided with the drainage layer 10 positioned at 5 lower section of permeable layer.
Permeable layer 5 is metalling, and drainage layer 10 is coarse sands layer.
Pressure reduction well 7 penetrates longitudinal drainage blind pipe 6.
Steel floral tube 11 is buried in pressure reduction well 7.
The nozzle absolute altitude of steel floral tube 11 is higher by tunnel the cross-section of river in ditch 2, and steel floral tube 11 is located in tunnel in ditch 2
It is not provided with pore on 2 bottom two of ditch lining and the tube wall of first branch inside configuration point in portion and tunnel, steel floral tube 11 is located at pressure reduction well 7
And pore 12 is set on the tube wall of buried 4 inner part of weeper drain.
Gap is blocked with sealing material 13 between 2 bottom surface of ditch in steel floral tube 11 and tunnel.
Sealing material 13 uses polyurethane sealant 15 and Bituminous hemp fiber 16.
Longitudinal drainage blind pipe 6, steel floral tube 11 outside be enclosed with non-woven fabrics 14.
Single-track railway tunnel substrate guarded drainage strengthen the system is by Tunnel Base guarded drainage and Tunnel Base pressure relief system two
It is grouped as, steps are as follows for Specific construction:
Tunnel Base waterproof and water drainage system:
Under Tunnel Base 1 when half section excavation, along the tunnel of two sides 2 position of ditch utilize Miniature digging machine, downward cutting,
Two longitudinal grooves are excavated out as buried weeper drain 4, the interior backfill rubble of the channel bottom of buried weeper drain 4 is as infiltration
Layer 5 blocks drainage channel, is first one layer of 10- in the trench bottom of buried weeper drain 4 to prevent soil layer particle from entering permeable layer 5
15cm coarse sand drainage layer 10 is permeable layer 5 in drainage layer 10, and permeable layer 5 is backfilled by 2-4cm rubble, is buried in permeable layer 5
Longitudinal drainage blind pipe 6, it is outer on longitudinal drainage blind pipe 6 to wrap up in non-woven fabrics 14, setting spaced apart between the buried weeper drain 4 in two sides
One of transverse drainage blind pipe 3, transverse drainage blind pipe 3 protrude into the buried weeper drain 4 in two sides, it is blind to form latticed ring longitudinal drainage
Pipe combined drain system is laid with layer of non-woven fabric 8+ splash guard 9, as Tunnel Base 1 every pulp layer, then on permeable layer 5
The first branch inverted arch of construction tunnel again.
Tunnel Base pressure relief system:
After the completion of tunnel double-lining and buried weeper drain 4 are constructed, 2 longitudinal gap of ditch is certain along the tunnel of two sides in hole
Distance sets pressure reduction well 7 using air drill drilling, and hole depth gos deep into country rock 2-3m outside just branch inverted arch and be advisable to penetrate, lower in hole outer to wrap up in nothing
The steel floral tube 11 of woven fabric 14；Not aperture in 11 oral area 1.5m of steel floral tube, aperture that 11 lower part of steel floral tube is quincunx, aperture 6mm, the spray of molten steel
11 nozzle absolute altitude of pipe is higher by tunnel cross-section of river certain altitude in ditch 2, steel floral tube 11 and the sky between 2 bottom surface of ditch in tunnel
Gap is blocked with sealing material 13.
Working principle: the water around buried weeper drain 4 passes through drainage layer 10, permeable layer 5 enters longitudinal drainage blind pipe 6
It is interior, it is drained by longitudinal drainage blind pipe 6, is formd since transverse drainage blind pipe 3 is connected to the longitudinal drainage blind pipe 6 of two sides
Latticed ring longitudinal drainage blind pipe combined drain system, when locally blocking for ring longitudinal drainage blind pipe combined drain system
When, water flow still can keep proper drainage by other Path reroutings；Pressure reduction well 7 is along buried 4 longitudinal gap of weeper drain, one spacing
From setting, and longitudinal drainage blind pipe 6 is penetrated, is linked to be one with Tunnel Base 1 with outer ring longitudinal drainage blind pipe combined drain system
Body, when lower loop longitudinal drainage blind pipe combined drain system locally blocks, ring longitudinal drainage blind pipe combined drain system
Water inside interior water and pressure reduction well 7 is entered inside steel floral tube 11 by the pore 12 of 11 lower part of steel floral tube, due to steel floral tube
The not set pore 12 in 11 tops, in the presence of hydraulic pressure, the water inside steel floral tube 11 are discharged by the nozzle at 11 top of steel floral tube
Ditch 2 in tunnel drain pressure release by ditch 2 in tunnel.
1 embodiment of the invention is described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. a kind of single-track railway tunnel substrate guarded drainage strengthen the system, it is characterised in that: blind including Tunnel Base, transverse drainage
Pipe, the inside two sides of the Tunnel Base are provided with ditch in tunnel, are arranged with outside the lower section lining cutting in ditch in the tunnel
The buried weeper drain longitudinally disposed along Tunnel Base, the buried weeper drain are internally provided with permeable layer, the infiltration
It is longitudinally arranged longitudinal drainage blind pipe along buried weeper drain in layer, the transverse drainage blind pipe is set along the transverse direction of Tunnel Base
It sets and the buried weeper drain of two sides is connected to form latticed ring longitudinal drainage blind pipe combined drain system by it；The depth
It buries and sets pressure reduction well in weeper drain, the well bore of the pressure reduction well passes through tunnel interior ditch bottom two lining and first branch structure is deeply enclosed
In rock；
The single-track railway tunnel substrate guarded drainage strengthen the system is by Tunnel Base guarded drainage and Tunnel Base pressure relief system two parts
Composition, steps are as follows for Specific construction:
Tunnel Base waterproof and water drainage system:
Under Tunnel Base when half section excavation, ditch position utilizes Miniature digging machine along the tunnel of two sides, and downward cutting is excavated out
Two longitudinal grooves, as permeable layer, are anti-as buried weeper drain, the interior backfill rubble of the channel bottom of buried weeper drain
Only soil layer particle enters permeable layer, blocks drainage channel, first does one layer of 10-15cm coarse sand filter in the trench bottom of buried weeper drain
Water layer is permeable layer in drainage layer, and permeable layer is backfilled by 2-4cm rubble, and longitudinal drainage blind pipe is buried in permeable layer, longitudinal
It is outer on draining blind pipe to wrap up in non-woven fabrics, one of transverse drainage blind pipe of setting spaced apart between the buried weeper drain in two sides, laterally
Draining blind pipe protrudes into the buried weeper drain in two sides, latticed ring longitudinal drainage blind pipe combined drain system is formed, in permeable layer
Upper laying layer of non-woven fabric+splash guard, as Tunnel Base every pulp layer, the subsequent first branch inverted arch of construction tunnel again；
Tunnel Base pressure relief system:
After the completion of tunnel double-lining and the construction of buried weeper drain, ditch is longitudinally spaced-apart benefit along the tunnel of two sides in hole
Pressure reduction well is set with air drill drilling, just branch inverted arch gos deep into country rock 2-3m, the lower outer steel floral tube for wrapping up in non-woven fabrics in hole outside for hole deep penetration；
Not aperture in spray of molten steel spout part 1.5m, aperture that steel floral tube lower part is quincunx, aperture 6mm, steel floral tube nozzle absolute altitude are higher by tunnel
Gap is blocked with sealing material between the bottom surface of ditch in the cross-section of river in ditch, steel floral tube and tunnel.
2. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 1, it is characterised in that: the tunnel
The outside of road substrate is successively laid with splash guard, non-woven fabrics, and the splash guard, non-woven fabrics are located at the top of buried weeper drain.
3. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 1, it is characterised in that: the depth
Bury the drainage layer that the bottom in weeper drain is provided with below permeable layer.
4. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 3, it is characterised in that: the infiltration
Water layer is metalling, and the drainage layer is coarse sands layer.
5. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 1, it is characterised in that: the drop
Kill-job penetrates longitudinal drainage blind pipe.
6. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 1, it is characterised in that: the drop
Steel floral tube is buried in kill-job.
7. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 6, it is characterised in that: the steel
The nozzle absolute altitude of floral tube is higher by tunnel the cross-section of river in ditch, and the steel floral tube is located in tunnel inside ditch and tunnel Nei Shui
Pore is not provided on the lining of ditch bottom two and the tube wall of first branch inside configuration point, the steel floral tube is located at pressure reduction well and buried draining is blind
Pore is set on the tube wall of ditch inner part.
8. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 7, it is characterised in that: the steel
Gap is blocked with sealing material between the bottom surface of ditch in floral tube and tunnel.
9. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 8, it is characterised in that: described close
Closure material uses polyurethane sealant and Bituminous hemp fiber.
10. a kind of single-track railway tunnel substrate guarded drainage strengthen the system according to claim 6, it is characterised in that: described
Longitudinal drainage blind pipe, steel floral tube outside be enclosed with non-woven fabrics.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610419973.8A CN105986836B (en) | 2016-06-14 | 2016-06-14 | A kind of single-track railway tunnel substrate guarded drainage strengthen the system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610419973.8A CN105986836B (en) | 2016-06-14 | 2016-06-14 | A kind of single-track railway tunnel substrate guarded drainage strengthen the system |
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| CN105986836A CN105986836A (en) | 2016-10-05 |
| CN105986836B true CN105986836B (en) | 2018-12-14 |
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Effective date of registration: 20190213 Address after: 300000 Tianjin Free Trade Test Zone (Airport Economic Zone) No. 36 West Central Road Patentee after: CHINA RAILWAY LIUYUAN GROUP CO., LTD. Address before: 300000 Hongqiao District, Tianjin City, Bridge South East Road Patentee before: Zhongtie Tunnel Survey and Design Inst., Ltd. |