CN105986836A - Single-line railway tunnel substrate waterproof and drainage reinforcing system - Google Patents
Single-line railway tunnel substrate waterproof and drainage reinforcing system Download PDFInfo
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- CN105986836A CN105986836A CN201610419973.8A CN201610419973A CN105986836A CN 105986836 A CN105986836 A CN 105986836A CN 201610419973 A CN201610419973 A CN 201610419973A CN 105986836 A CN105986836 A CN 105986836A
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- 239000000758 substrate Substances 0.000 title claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 title abstract 3
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 238000005728 strengthening Methods 0.000 claims description 17
- 239000004745 nonwoven fabric Substances 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 10
- 239000008393 encapsulating agent Substances 0.000 claims description 8
- 239000011435 rock 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
- 239000004588 polyurethane sealant Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 33
- 230000002411 adverse Effects 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- 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 the field of a waterproof and drainage system, and particularly relates to a single-line railway tunnel substrate waterproof and drainage reinforcing system. The single-line railway tunnel substrate waterproof and drainage reinforcing system is characterized in that a tunnel inner ditch is arranged at each of two sides inside a tunnel substrate; deep burying drainage blind ditches which are arranged in the longitudinal direction of the tunnel substrate are arranged outside linings positioned under the tunnel inner ditches; a water seeping layer is arranged inside each deep burying drainage blind ditch; longitudinal drainage blind pipes are arranged in the longitudinal direction of the deep burying drainage blind ditches in the water seeping layer; transverse drainage blind pipes are arranged in the transverse direction of the tunnel substrate and communicate with the deep burying drainage blind ditches positioned at the two sides to form a latticed annular longitudinal drainage blind pipe combined drainage system; a pressure reduction well is formed in each deep burying drainage blind ditch; and the well body of each pressure reduction well passes through two linings and primary support structures at the bottom of the tunnel inner ditches to go deep into surrounding rack. By using dual paths of substrate drainage and pressure relief, the problem of adverse state of the tunnel substrate rich-water pressure bearing is solved; the structure stress is facilitated; and the long-time operation safety of the tunnel is facilitated.
Description
Technical field
The invention belongs to waterproof and water drainage system field, particularly relate to the guarded drainage strengthening system outside an inverted arch at the beginning of a kind of single-track railway tunnel substrate.
Background technology
Railway tunnel generally uses composite lining structural shape at present, set full bag or half bag watertight insulation between preliminary bracing and two linings, outside watertight insulation, be disposed with the outer drainage system of tunnel-liner, Nei You hole, tunnel 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: is just propping up and is laying layer of non-woven fabric+splash guard between two linings, keep at a certain distance away and hoop blind pipe is set, or directly use draining strip, on the top of behind, abutment wall basis, longitudinal drainage blind pipe is set, hoop blind pipe uses three way cock to connect with longitudinal blind pipe, longitudinal blind pipe keeps at a certain distance away and sets horizontal water guide blind pipe introducing tunnel medial sulcus, forms complete vertically and horizontally drainage system.
Wherein waterproof system is by inverted arch to divide into water plate in the air, is divided into again the waterproof and full bag of half bag waterproof.It has been generally acknowledged that the waterproof meeting of full packet form causes two linings to bear hydraulic pressure for a long time, seepage disease easily occurs and reduces the life-span.In railway tunnel, waterproof form is partly wrapped in more employing.
Drainage system divides outside hole and in hole, and the ring longitudinal direction blind pipe outside being normally only by lining cutting outside hole realizes, and longitudinal blind pipe position is positioned at top behind, abutment wall basis, does not set following drainage channel at the bottom of tunnel.Hole inner water drainage system, it is common that both sides arrange ditch, to double track tunnel, when the water yield is bigger, the standing Central drain that is equipped with, major part Central drain is positioned at packed layer above inverted arch, and to severe cold area, some Central drains are taked buried, is positioned at and just props up below inverted arch.
But for single-track railway tunnel, especially heavy haul railway, it is different from double track tunnel, if also lower section arranges Central drain in the middle part of inverted arch, will significantly weaken the globality of railway roadbed, the most unfavorable to inverted arch structure stress.Therefore, simple center Deeply buried ditch is poor to single-track railway tunnel adaptability, need to consider to improve.
Meanwhile, above-mentioned conventional guarded drainage pattern, it is only capable of the water discharging longitudinal blind pipe with upper bit, to the water below longitudinal blind pipe and under inverted arch, it is impossible to discharge；And due to half bag, without waterproof layer below inverted arch, when country rock following at the bottom of tunnel is soft stratum, or when having the characteristic meeting water softening, substrate rich water can frequently result in differential settlement, stratum depression of bearing force, the disease such as rise soil.To heavy haul railway or high-speed railway, owing to the train operation frequency is high, maintenance Window time is short, occurs that operation can be made a big impact by above-mentioned disease.
Therefore, the most reasonably water of white-out tunnel bottom, it is still tunnel water handling and designs the emphasis that should pay close attention to.
Based on above-mentioned premise, when single-track railway tunnel waterproof and drainage design, it is necessary to Tunnel Base waterproof and water drainage system is strengthened.The water of what in existing waterproof and drainage design, problem was maximum is exactly below tunnel bottom longitudinal direction blind pipe cannot be discharged, and substrate is chronically at rich water state, and hydraulic pressure is born in tunnel-liner.
Summary of the invention
In order to solve the problem of Tunnel Base rich water, the present invention implements and strengthens Tunnel Base guarded drainage and increase the design concept of pressure release passage, it is provided that a kind of single-track railway tunnel substrate guarded drainage strengthening system.
The technical solution adopted in the present invention is:
A kind of single-track railway tunnel substrate guarded drainage strengthening system, it is characterized in that: include Tunnel Base, transverse drainage blind pipe, the both sides, inside of described Tunnel Base are provided with ditch in tunnel, all it is disposed with along the longitudinally disposed buried weeper drain of Tunnel Base in described tunnel outside the lower section lining cutting in ditch, described buried weeper drain be internally provided with permeable layer, it has been longitudinally arranged longitudinal drainage blind pipe in described permeable layer along buried weeper drain, described transverse drainage blind pipe along the horizontally set of Tunnel Base and its buried weeper drain of both sides connected and forms latticed ring longitudinal drainage blind pipe combined drain system；Set pressure reduction well in described buried weeper drain, the well bore of described pressure reduction well pass through tunnel bottom interior ditch two linings and just a structure go deep in country rock.
The outside of described Tunnel Base is laid with splash guard, non-woven fabrics successively, and described splash guard, non-woven fabrics are positioned at the top of buried weeper drain.
Bottom in described buried weeper drain is provided with the drainage layer being positioned at below permeable layer.
Described permeable layer is metalling, and described drainage layer is coarse sands layer.
Described pressure reduction well penetrates longitudinal drainage blind pipe.
Steel floral tube is buried underground in described pressure reduction well.
The mouth of pipe absolute altitude of described steel floral tube exceeds in tunnel the cross-section of river in ditch, described steel floral tube is positioned at bottom inside, ditch, tunnel and ditch, tunnel and is not provided with pore on two linings and first the tube wall that inside configuration is divided, and described steel floral tube is positioned on pressure reduction well and buried weeper drain tube wall partly and arranges pore.
In described steel floral tube and tunnel, between bottom surface, ditch, space encapsulant blocks.
Described encapsulant uses polyurethane sealant and Bituminous hemp fiber.
Described longitudinal drainage blind pipe, the outside of steel floral tube are all enclosed with non-woven fabrics.
The invention have the benefit that
1, the present invention implements and strengthens Tunnel Base guarded drainage and increase the design concept of pressure release passage, namely arranges buried weeper drain below ditch in tunnel, Tunnel Base both sides, and the buried weeper drain in both sides is connected by transverse drainage blind pipe；Separately in the buried weeper drain in both sides, tunnel, set pressure reduction well, to one drain passage of hydraulic pressure bottom inverted arch, make sole be in passive state, thus significantly weaken the harm of soft stratum substrate rich water；
2, tunnel is by the double approach of substrate draining and pressure release, solves the unfavoured state of Tunnel Base rich water pressure-bearing, and more favourable to structure stress, operation security long-term to tunnel is more favourable；
3, the present invention can dredge single-track railway tunnel bottom water pressure, it is to avoid rich water pressure-bearing bottom at the bottom of tunnel, under long-term DYNAMIC LOADING OF DRIVING TRAIN ON BRIDGES effect substrate soften, the phenomenon such as rise soil, ensure train operation safety；
4, the buried weeper drain in both sides porosity is big, drainability is strong, and in french drain, separately it is disposed with major diameter longitudinal drainage blind pipe, nonwoven cloth filter material is wrapped up in outside longitudinal drainage blind pipe, keeping at a certain distance away between the buried weeper drain in both sides and be provided with transverse drainage blind pipe, defining tunnel spacer screen trellis ring longitudinal drainage blind pipe combined drain system, even if locally blocking, current still can pass through other Path reroutings, and 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, is connected with outer shroud longitudinal drainage blind pipe combined drain system with Tunnel Base, adds the drain passage of Tunnel Base water；
6, pressure reduction well can be encrypted according to operation phase service condition or change, and whole pressure relief system can play a role all the time, even if lower loop longitudinal drainage blind pipe combined drain system locally blocks, it is also possible to drains into ditch in hole by pressure reduction well；
7, in tunnel, ditch draining will not be recharged down and oozed to Tunnel Base, and Tunnel Base guarded drainage strengthening system does not occur directly to contact with ditch draining in tunnel, only when Tunnel Base pressure-bearing, is drained to ditch in tunnel by pressure reduction well；
8, whole tunnel bottom full width lays non-woven fabrics, splash guard, forms full packet system, more partly wraps waterproof to preventing Tunnel Base from rising soil advantageously.
Accompanying drawing explanation
Fig. 1 is that in the present invention, Tunnel Base strengthens waterproof and water drainage system generalized section；
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.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
In figure, 1-Tunnel Base, ditch in 2-tunnel, 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-encapsulant, 14-non-woven fabrics, 15-polyurethane sealant, 16-Bituminous hemp fiber, rail end face in 17-, 18-is not provided with pore section, and in 19-tunnel bottom surface, ditch.
Embodiment
As Figure 1-5, a kind of single-track railway tunnel substrate guarded drainage strengthening system, including Tunnel Base 1, transverse drainage blind pipe 3, the both sides, inside of Tunnel Base 1 are provided with ditch 2 in tunnel, all it is disposed with along the longitudinally disposed buried weeper drain 4 of Tunnel Base 1 in tunnel outside the lower section lining cutting in ditch 2, buried weeper drain 4 be internally provided with permeable layer 5, it has been longitudinally arranged longitudinal drainage blind pipe 6 along buried weeper drain 4 in permeable layer 5, transverse drainage blind pipe 3 along the horizontally set of Tunnel Base 1 and its buried weeper drain 4 of both sides connected the latticed ring longitudinal drainage blind pipe combined drain system of formation；Set pressure reduction well 7 in buried weeper drain 4, the well bore of pressure reduction well 7 pass through tunnel bottom interior ditch 2 two linings and just a structure go deep in country rock.
The outside of Tunnel Base 1 is laid with splash guard 9, non-woven fabrics 8 successively, and splash guard 9, non-woven fabrics 8 are positioned at the top of buried weeper drain 4.
Bottom in buried weeper drain 4 is provided with the drainage layer 10 being positioned at below permeable layer 5.
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 underground in pressure reduction well 7.
The mouth of pipe absolute altitude of steel floral tube 11 exceeds in tunnel the cross-section of river in ditch 2, steel floral tube 11 is positioned at bottom inside, ditch, tunnel 2 and ditch, tunnel 2 and is not provided with pore on two linings and first the tube wall that inside configuration is divided, and steel floral tube 11 is positioned on pressure reduction well 7 and buried weeper drain 4 tube wall partly and arranges pore 12.
In steel floral tube 11 and tunnel, between bottom surface, ditch 2, space encapsulant 13 blocks.
Encapsulant 13 uses polyurethane sealant 15 and Bituminous hemp fiber 16.
Longitudinal drainage blind pipe 6, the outside of steel floral tube 11 are all enclosed with non-woven fabrics 14.
Single-track railway tunnel substrate guarded drainage strengthening system is made up of Tunnel Base guarded drainage and Tunnel Base pressure relief system two parts, and Specific construction step is as follows:
Tunnel Base waterproof and water drainage system:
nullWhen 1 time half section excavation of Tunnel Base，Along tunnel, both sides, position, ditch 2 utilizes Miniature digging machine，Cutting downwards，Excavate out two longitudinal grooves as buried weeper drain 4，In the channel bottom of buried weeper drain 4, backfill rubble is as permeable layer 5，For preventing soil layer granule from entering permeable layer 5，Blocking drainage channel，Trench bottom at buried weeper drain 4 first does one layer of 10-15cm coarse sand drainage layer 10，It it is permeable layer 5 on drainage layer 10，Permeable layer 5 is formed by the backfill of 2-4cm rubble，Longitudinal drainage blind pipe 6 is buried underground in permeable layer 5，Non-woven fabrics 14 is wrapped up in outside on longitudinal drainage blind pipe 6，Keep at a certain distance away between the buried weeper drain in both sides 4 and one transverse drainage blind pipe 3 is set，Transverse drainage blind pipe 3 stretches into the buried weeper drain in both sides 4，Form latticed ring longitudinal drainage blind pipe combined drain system，Permeable layer 5 is laid layer of non-woven fabric 8+ splash guard 9，Double as Tunnel Base 1 every pulp layer，An inverted arch at the beginning of construction tunnel the most again.
Tunnel Base pressure relief system:
After tunnel double-lining and buried weeper drain 4 have been constructed, in hole along tunnel, both sides ditch 2 be longitudinally spaced-apart utilize air drill boring set pressure reduction well 7, hole depth is just goed deep into country rock 2-3m outside an inverted arch be advisable to be penetrated, the lower outer steel floral tube 11 wrapping up in non-woven fabrics 14 in hole；Not perforate in steel floral tube 11 oral area 1.5m, perforate that steel floral tube 11 bottom is quincunx, aperture 6mm, steel floral tube 11 mouth of pipe absolute altitude exceeds in tunnel cross-section of river certain altitude in ditch 2, steel floral tube 11 and and tunnel between bottom surface, ditch 2 space encapsulant 13 block.
Operation principle: the water around buried weeper drain 4 wears filtered water level 10, permeable layer 5 enters in longitudinal drainage blind pipe 6, draining is carried out by longitudinal drainage blind pipe 6, owing to transverse drainage blind pipe 3 makes longitudinal drainage blind pipe 6 connection of both sides define latticed ring longitudinal drainage blind pipe combined drain system, when the locally generation of ring longitudinal drainage blind pipe combined drain system blocks, current still can pass through other Path reroutings, keeps proper drainage；Pressure reduction well 7 is longitudinally spaced-apart along buried weeper drain 4 and sets, and penetrate longitudinal drainage blind pipe 6, it is connected with outer shroud longitudinal drainage blind pipe combined drain system with Tunnel Base 1, when locally there is blocking in lower loop longitudinal drainage blind pipe combined drain system, it is internal that water in ring longitudinal drainage blind pipe combined drain system and the water within pressure reduction well 7 enter steel floral tube 11 by the pore 12 of steel floral tube 11 bottom, owing to steel floral tube 11 top is not provided with pore 12, under the effect of hydraulic pressure, water within steel floral tube 11 enters ditch 2 in tunnel by the mouth of pipe at steel floral tube 11 top, by ditch in tunnel 2 draining pressure release.
Above 1 embodiment of the present invention is described in detail, but described content has been only presently preferred embodiments of the present invention, it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement etc., within all should still belonging to the patent covering scope of the present invention.
Claims (10)
1. a single-track railway tunnel substrate guarded drainage strengthening system, it is characterized in that: include Tunnel Base, transverse drainage blind pipe, the both sides, inside of described Tunnel Base are provided with ditch in tunnel, all it is disposed with along the longitudinally disposed buried weeper drain of Tunnel Base in described tunnel outside the lower section lining cutting in ditch, described buried weeper drain be internally provided with permeable layer, it has been longitudinally arranged longitudinal drainage blind pipe in described permeable layer along buried weeper drain, described transverse drainage blind pipe along the horizontally set of Tunnel Base and its buried weeper drain of both sides connected and forms latticed ring longitudinal drainage blind pipe combined drain system；Set pressure reduction well in described buried weeper drain, the well bore of described pressure reduction well pass through tunnel bottom interior ditch two linings and just a structure go deep in country rock.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 1, it is characterised in that: the outside of described Tunnel Base is laid with splash guard, non-woven fabrics successively, and described splash guard, non-woven fabrics are positioned at the top of buried weeper drain.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 1, it is characterised in that: the bottom in described buried weeper drain is provided with the drainage layer being positioned at below permeable layer.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 3, it is characterised in that: described permeable layer is metalling, and described drainage layer is coarse sands layer.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 1, it is characterised in that: described pressure reduction well penetrates longitudinal drainage blind pipe.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 1, it is characterised in that: bury steel floral tube underground in described pressure reduction well.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 6, it is characterized in that: the mouth of pipe absolute altitude of described steel floral tube exceeds in tunnel the cross-section of river in ditch, described steel floral tube is positioned at bottom inside, ditch, tunnel and ditch, tunnel and is not provided with pore on two linings and first the tube wall that inside configuration is divided, and described steel floral tube is positioned on pressure reduction well and buried weeper drain tube wall partly and arranges pore.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 7, it is characterised in that: in described steel floral tube and tunnel, between bottom surface, ditch, space encapsulant blocks.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 8, it is characterised in that: described encapsulant uses polyurethane sealant and Bituminous hemp fiber.
A kind of single-track railway tunnel substrate guarded drainage strengthening system the most according to claim 6, it is characterised in that: described longitudinal drainage blind pipe, the outside of steel floral tube are all enclosed with non-woven fabrics.
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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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Cited By (12)
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| CN106437841A (en) * | 2016-10-27 | 2017-02-22 | 中煤第三建设（集团）有限责任公司 | Railway tunnel drainage blind pipe for preventing leakage and construction method thereof |
| CN106968712A (en) * | 2017-05-12 | 2017-07-21 | 西南交通大学 | Water rich strata tunnel bottom discharge structure and its construction method |
| CN107905810A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | Boot last pedestal combed tunnel bottom liner structure and its drainage system |
| CN107905812A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | The hollow compound arch tunnel-liner in type tunnel bottom and its drainage system construction of falling from power |
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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. |