CN109236367A - A kind of tunnel structure and its frozen construction method with antiseepage drain function - Google Patents
A kind of tunnel structure and its frozen construction method with antiseepage drain function Download PDFInfo
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- CN109236367A CN109236367A CN201811181300.9A CN201811181300A CN109236367A CN 109236367 A CN109236367 A CN 109236367A CN 201811181300 A CN201811181300 A CN 201811181300A CN 109236367 A CN109236367 A CN 109236367A
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 230000008014 freezing Effects 0.000 claims abstract description 51
- 238000007710 freezing Methods 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 25
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 23
- 230000002631 hypothermal effect Effects 0.000 claims abstract description 23
- 239000011780 sodium chloride Substances 0.000 claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011435 rock Substances 0.000 claims abstract description 7
- 238000009412 basement excavation Methods 0.000 claims description 19
- 239000012267 brine Substances 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000011380 pervious concrete Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims 1
- 235000015110 jellies Nutrition 0.000 claims 1
- 239000008274 jelly Substances 0.000 claims 1
- 239000003673 groundwater Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004078 waterproofing Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/381—Setting apparatus or devices
-
- 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)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of tunnel structure with antiseepage drain function and its frozen construction methods, it is related to technical field of tunnel construction, it includes freezing pipe, freeze sealing layer, thermal insulation concrete layer, drainage layer, branch sheath, impervious layer, lateral collector pipe, bottom discharge pipe, waterproof layer, secondary lining layer, hypothermic saline pond, Freezing Station, freeze delivery pipe and delivery pipe, the present invention proposes that the tunnel structure of antiseepage drain function and its frozen construction method can avoid a possibility that causing ground settlement because of underground water loss, mitigate country rock disturbance, it avoids damaging the water system soil other than freezing zone, it is particularly suitable for groundwater resources sponge city abundant, with environmental benefit.In addition to this, using construction freezing method, country rock fragile for part, which has, improves Surrounding Rock Strength effectiveness, and the present invention reduces construction drainage amount, saves tunnel operation maintenance cost.Tunnel is protruded from guarded drainage ability.Water seepage of tunnel leak is avoided, safeguard and extends tunnel structure service performance and service life.
Description
Technical field
The invention belongs to technical field of tunnel construction, more particularly to a kind of tunnel structure with antiseepage drain function and
Its frozen construction method.
Background technique
Tunnel water handling refers to guarantee that reason percolating water does not cause disease for tunnel construction, jeopardizes traffic safety, corrosion
Equipment in hole reduces structure service life and the waterproof and drainage measure taken.It is one and is related to landform, weather, engineering stratum
With the synthesis sex work of the factors such as hydrogeology, organization plan, construction method and material properties；Basic demand should be to prevent be
It is main.
The central and west regions and southwest of task of especially shaking off poverty weight, it is very high in the bridge tunnel ratio for highway of founding a capital, because
The construction of blowout will occur in this tunnel.But tunnel is built under earth's surface, and the moment is in the environment of underground water encirclement, if
The unreasonable or construction technology of tunnel water handling design is not appropriate, all will lead to tunnel water handling system and defect occurs, to cause
Percolating water occurs for tunnel." leakage of ten tunnels nine " often said in engineering circles sufficiently reflects the seriousness for the treatment of technology for tunnel seepage water problems, leakage
Water is own through becoming the most common disease in highway in China tunnel.And the infiltration in structure can aggravate all kinds of diseases in tunnel in turn
It generates and develops, the final service life for influencing tunnel and service performance.
The common water blockoff measure in China has: coagulation scholar's lining cutting water blockoff, plastic plate water blockoff and grouting for water blocking.When tunnel is using dark
It is the element task before tunnel excavation using the underground water within the scope of sealing or drainage sunk well tunnel excavation when digging method is constructed.
Currently, tunnel sealing in China generally uses ejection for water plugging or rotary churning pile water stopping, both sealing modes are required into soil layer
Cement grout, polluted underground water water quality are injected, while cement grout flow direction is not easy to control, the seepage flow for being easy blocking underground water is logical
Road changes the percolation path of underground water, makes to monitor obtained geological conditions originally and changes with groundwater condition, is not easy to slap
Control expends a large amount of manpower, material resources and financial resources if carrying out whole measurement again, not cost-effective.And drainaging scheme is used, waste is valuable
Groundwater resources, while level of ground water caused by draining reduce easily cause periphery it is neighbouring build, the sedimentation and deformation of structures.No matter
It is sealing or drains simply that all irreversible influence will be caused on geological environment and body of groundwater environment, to a certain extent
Against the principle of protection environment, water conservation.
Waterproof technique is broadly divided into two kinds, and one is material waterproofings；One is tunnel structure waterproofs.
At abroad, the tunnel water handling technology of Japan is walked in the world of world forefront, for different types of tunnel toward in the past
This uses different waterproofing design theories, according to the difference in tunnel geographical location, using different guarded drainage modes.To city,
Seabed tunnel uses the mode of " based on stifled, the row of blocking up is combined ", and the mould of " based on row, the row of blocking up is combined " is used to mountain tunnel
Formula has special company to be responsible for researching and developing guarded drainage material, informationization technology is applied in the design and construction of waterproof and water drainage system,
It is rigid in checking up to the quality of waterproof and water drainage system.Currently, the outer guarded drainage technology of net is on the basis for emphasizing tunnel structure self waterproofing effect
On, developed from multi layer waterproof to one of waterproof, waterproof material is combined with construction technology, greatly develops combined type guarded drainage material material
Material, to obtain good engineering and economic benefit.Waterproof between liner structure section at construction joint, Japan develop isobutyl group
Rubber fastening band presss from both sides steel disc in this waterstop, easy for construction, can obtain good waterproofing effect.
Freezing Method Construction In Tunnel is as its name suggests to arrange substantially parallel with channel direction freeze along excavated section periphery
Then hole recycles hypothermic saline in freezing hole, the aquifer water-bearing stratum near freezing hole is made to freeze, and formation intensity is high, water shutoff is good
Frozen Soil Cylinder, then under the protection of Frozen Soil Cylinder carry out tunnel excavation construction.Its principle are as follows: arranged along excavated section periphery
The freezing hole substantially parallel with channel direction, then recycles hypothermic saline in freezing hole, makes the aquifer water-bearing stratum near freezing hole
It freezes, forms the Frozen Soil Cylinder that intensity is high, water shutoff is good, tunnel excavation construction is then carried out under the protection of Frozen Soil Cylinder.Freeze
Connection construction has the advantages that (1) freezing curtain intensity is higher compared to other conventional construction methods: freezing to glue at -10 DEG C
The compression strength of soil is generally up to 5MPa, and the compression strength of Frozen Sand is generally up to 8MPa or more；(2) sealing of Frozen Soil Cylinder
Property it is good, and be easy examined by setting hydrology hole in Frozen Soil Cylinder；(3) smaller to locating ground disturbance, surface subsidence control
Certainty processed is big；(4) ground place need not be occupied.
Conventional tunnel drainage sunk well, the precipitation for being usually 5 meters or so in two sides abutment wall bottom drilling depth using drilling machine
So that underground water flows out along dewatering well, while gutter is arranged to reduce the water level of tunnel internal water accumulation in two sides abutment wall in well；And
Gutter process for constructing is that the cavity to form gutter is built using plank sheathing after the completion of earth excavation, then in plank sheathing week
Enclose casting inverted arch layer；Drainage ditch cover plate steel mesh is arranged in the cavity top that plank sheathing is built, and is poured drainage ditch cover plate；Then also
In the processes such as inverted arch layer and drainage ditch cover plate upper pouring levelling blanket, is all solidified to inverted arch layer and drainage ditch cover plate and meet intensity scale
After standard, original plank sheathing is removed to get the gutter needed is arrived.Since the gutter length in tunnel is longer, using above-mentioned reality
When applying mode, need to build using a large amount of templates, the wooden a tree, used in making timber for boats and be also required to consume many working hours with form removal frame, also, drain
Effect is not readily reachable by desired effect.
Summary of the invention
In order to solve above-mentioned technical problem, the invention proposes a kind of tunnel structures with antiseepage drain function
And its frozen construction method, it is intended to underground water losing issue when solving constructing tunnel, to avoid drawing because level of ground water declines
The surface subsidence risen, the prominent tunnel structure of the present invention extend tunnel service life, safeguard tunnel usability from anti-, drainability
Energy.
The technical solution adopted by the invention is as follows:
A kind of tunnel structure with antiseepage drain function of the present invention, including freezing pipe, freeze sealing layer, thermal insulation concrete layer,
Drainage layer, impervious layer, lateral collector pipe, bottom discharge pipe, waterproof layer, secondary lining layer, hypothermic saline pond, is freezed branch sheath
It stands, freeze delivery pipe and delivery pipe, the former setting of freezing pipe insertion is freezed to freeze in sealing layer within the scope of sealing, keeps the temperature coagulation
Soil layer is close to the inside for freezing sealing layer, is laid with drainage layer in thermal insulation concrete layer inner wall top half, lower half portion is laid with
Impervious layer, be set to impervious layer in lateral collector pipe and one end of lateral collector pipe with drainage layer is seamless connects, branch sheath lining cutting
The inside of annulus is formed in drainage layer and impervious layer, wherein branch sheath includes waterproof layer and secondary lining layer, from inside to outside, before this
Then waterproof layer, waterproof layer are tightly attached to drainage layer and impervious layer to secondary lining layer, and bottom discharge pipe is embedded in the inside of impervious layer,
The wall body of the other end insertion bottom discharge pipe of lateral collector pipe, hypothermic saline pond is connected with one end of Freezing Station by delivery pipe
It connects, the Freezing Station other end is connected with delivery pipe is freezed, and freezing delivery pipe can be connected with freezing pipe.
Further, pervious concrete of the drainage layer using intensity higher than 25Mpa, which is laid with, completes.
Further, the lateral collector pipe is arranged near deformation joint.
Deformation joint is arranged at soft or hard rock variation, light and shade boundary and section of providing fortification against earthquakes, and every 30m setting is together.
It is described to provide salt water using hypothermic saline pond, low-temperature circulating is carried out to the construction soil body and is freezed.
It is described to freeze sealing layer clear stipulaties boundary of works area, it avoids freezing the water system outside sealing layer and is lost.
Thermal insulation concrete layer can play the role of back the temperature within the scope of tunnel excavation slow.
Drainage layer seeps water for tunnel upper and flowing water is utilized this feature of water gravity and carries out to the water system of tunnel upper
Guidance discharge.
Impervious layer can Strengthening Tunnel bottom density and impermeability, avoid tunnel bottom from seeping water.
Drainage layer and impervious layer form " above draw it is lower it is anti-, on lead lower row " tunnel egodefense system.
Waterproof layer is tightly attached to drainage layer and impervious layer, and it is secondary to be well that tunnel water proofing plays simultaneously from guarded drainage in tunnel
Barrier action.
Further, a kind of tunnel structure and its frozen construction method with antiseepage drain function, feature
Be: specific step is as follows:
It first determines tunnel excavation range, freezes sealing layer and be divided in outside tunnel excavation range, before equipment of drilling is in place, use instrument
Accurate to determine aperture hole location, to improve positioning accuracy, what then freezing pipe insertion was delimited freeze sealing layer, mentioned by hypothermic saline pond
For hypothermic saline, hypothermic saline is conveyed to Freezing Station from delivery pipe, after Freezing Station is processed, by freeze delivery pipe with
Freezing pipe is connected, and the hypothermic saline of circulation is imported to stratum, freezes brine temp general control between -25~-28 DEG C, actively
The time freezed determines by capacity of equipment, soil property, environment, confirm in Frozen Soil Cylinder soil layer without after circulating water (except saturated water) again
It is formally excavated, after formal excavation, according to the stability of Frozen Soil Cylinder, improves brine temp, freeze rank hence into maintenance
Section, by-pass maintain freeze brine temp general control between -22~-25 DEG C, maintenance freeze-off time by structure construction when
Between determine, then building heat insulation concrete layer stablizes temperature within the scope of tunnel excavation, advanced after thermal insulation concrete layer conserves
The masonry of the impervious layer of row tunnel bottom position, from centre to two sides, from bottom to top, bottom discharge pipe is being built in tunnel bottom just
The impervious layer of lower section, lateral collector pipe are built in impervious layer, are arranged in tunnel two sides, are placed in deformation joint and construction joint position, often
Together, impervious layer, lateral collector pipe and the maintenance of bottom discharge pipe finish for 30m setting, carry out the masonry of tunnel upper drainage layer,
Lining cutting from top to bottom carries out the lining cutting work of branch sheath after this, and laying and secondary lining layer including waterproof layer are secondary
Lining cutting layer is completed using dry sprayig process.
Beneficial effects of the present invention:
1. the present invention provides salt water using hypothermic saline pond, low-temperature circulating is carried out to the construction soil body and is freezed, reduces and country rock is disturbed,
It avoids damaging the water system soil other than construction area, is particularly suitable for groundwater resources sponge city abundant, there is ring
Protect benefit.
2. freezing sealing layer clear stipulaties boundary of works area set by the present invention, there is impermeable role, construction row can be reduced
Water avoids freezing water system outside sealing layer and is lost, reduce because underground water is lost cause ground settlement a possibility that, except this it
Outside, the set sealing layer country rock fragile for part that freeze has raising Surrounding Rock Strength effectiveness, can play the role of temporary support.
3. thermal insulation concrete layer set by the present invention can play the role of back the temperature within the scope of tunnel excavation to delay, guarantee to apply
Work is normally carried out, and convenient for the completion of tunnel excavation and subsequent support lining and concrete curing, is shortened the construction period.
4. drainage layer set by the present invention there can be preferable discharge effect to tunnel upper flowing water, gravity diversion is utilized
This feature guides discharge to the water system of tunnel upper, avoids carrying out secondary construction because of tunnel drainage, while slowing down because of stream
Water carries under one's arms silt impact caused by tunnel structure, saves construction cost and later maintenance cost.
5. impervious layer set by the present invention can avoid tunnel bottom infiltration, avoid accelerating the carbonization of lining concrete because of infiltration
Speed is safeguarded and extends tunnel structure service performance and service life.
6. drainage layer set by the present invention and impervious layer form " above draw it is lower it is anti-, on lead lower row " tunnel egodefense
System avoids underground water and natural rainfall from damaging tunnel in the supportings weakness area bring such as deformation joint.
7. waterproof layer set by the present invention is tightly attached to drainage layer and impervious layer, it can well be drained in tunnel while also be tunnel
Waterproof plays secondary barrier action, protrudes tunnel from anti-, drainability.
Detailed description of the invention
Fig. 1 tunnel structure overall cross section.
Fig. 2 branch sheath schematic diagram.
The lateral collector pipe of Fig. 3 and bottom discharge pipe arrangement connection schematic diagram.
Fig. 4 freezes schematic illustration.
1 is freezing pipe in figure；2 be to freeze sealing layer；3 be thermal insulation concrete layer；4 be drainage layer；5 be branch sheath；6 be anti-
Infiltration layer；7 be lateral collector pipe；8 be bottom discharge pipe；9 be waterproof layer；10 be secondary lining layer；11 be hypothermic saline pond；12 are
Freezing Station；13 be to freeze delivery pipe；14 be delivery pipe.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
Embodiment: as shown in Fig. 1 ~ Fig. 4.A kind of tunnel structure with antiseepage drain function of the present invention comprising freeze
Pipe 1 freezes sealing layer 2, thermal insulation concrete layer 3, drainage layer 4, branch sheath 5, impervious layer 6, lateral collector pipe 7, bottom discharge pipe
8, waterproof layer 9, secondary lining layer 10, hypothermic saline pond 11, Freezing Station 12, freeze delivery pipe 13 and delivery pipe 14, freezing pipe 1 is inserted
Entering former setting to freeze to freeze in sealing layer 2 within the scope of sealing, thermal insulation concrete layer 3 is close to the inside for freezing sealing layer 2,
It is laid with drainage layer 4 in 3 inner wall top half of thermal insulation concrete layer, lower half portion is laid with impervious layer 6, is set in lateral collector pipe 7
One end of impervious layer 6 and lateral collector pipe 7 with drainage layer 4 is seamless connects, 5 lining cutting of branch sheath is in 6 shape of drainage layer 4 and impervious layer
At the inside of annulus, wherein branch sheath 5 includes waterproof layer 9 and secondary lining layer 10, from inside to outside, before this secondary lining layer 10 and
Waterproof layer 9 afterwards, waterproof layer 9 are tightly attached to drainage layer 4 and impervious layer 6, and bottom discharge pipe 8 is embedded in the inside of impervious layer 6, lateral to collect
The wall body of the other end insertion bottom discharge pipe 8 of water pipe 7, hypothermic saline pond 11 is connected with one end of Freezing Station 12 by delivery pipe 14
It connects, 12 other end of Freezing Station is connected with delivery pipe 13 is freezed, and freezing delivery pipe 13 can be connected with freezing pipe 1.
Pervious concrete of the drainage layer 4 using intensity higher than 25Mpa, which is laid with, to be completed.
The lateral collector pipe 7 is arranged near deformation joint.Deformation joint be arranged at soft or hard rock variation, light and shade boundary and
It provides fortification against earthquakes section, every 30m setting is together.
A kind of tunnel structure and its frozen construction method with antiseepage drain function, the specific steps are as follows:
It first determines tunnel excavation range, freezes sealing layer 2 and be divided in outside tunnel excavation range, before equipment of drilling is in place, use instrument
Device accurately determines aperture hole location, and to improve positioning accuracy, what the then insertion of freezing pipe 1 was delimited freeze sealing layer 2, by hypothermic saline
Pond 11 provides hypothermic saline, is conveyed from delivery pipe 14 to hypothermic saline to Freezing Station 12, after the processing of Freezing Station 12, by
Freeze delivery pipe 13 to be connected with freezing pipe 1, the hypothermic saline of circulation is imported to stratum, freezes brine temp general control -25
Between~-28 DEG C, the time actively freezed is determined by capacity of equipment, soil property, environment, confirms that soil layer is without circulating water in Frozen Soil Cylinder
It is formally excavated again (except saturated water) afterwards, after formal excavation, according to the stability of Frozen Soil Cylinder, improves brine temp, from
And freeze the stage into maintenance, by-pass maintains to freeze brine temp general control between -22~-25 DEG C, when maintenance is freezed
Between determined by the time of structure construction, then building heat insulation concrete layer 3 stablizes temperature within the scope of tunnel excavation, keeps the temperature coagulation
After the maintenance of soil layer 2 is good, the masonry of the impervious layer 6 of tunnel bottom position is first carried out, from centre to two sides, from bottom to top, bottom row
Water pipe 8 is built in the impervious layer 6 immediately below tunnel bottom, and lateral collector pipe 7 is built in impervious layer 6, is arranged in tunnel two sides,
It is placed in deformation joint and construction joint position, together, impervious layer 6, lateral collector pipe 7 and bottom discharge pipe 8 have conserved for every 30m setting
Finish, carry out the masonry of tunnel upper drainage layer, lining cutting from top to bottom carries out the lining cutting work of branch sheath 5 after this, including anti-
The laying of water layer 9 and secondary lining layer 10, secondary lining layer 10 are completed using dry sprayig process.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (5)
1. a kind of tunnel structure with antiseepage drain function, it is characterised in that: including freezing pipe (1), freeze sealing layer (2),
Thermal insulation concrete layer (3), branch sheath (5), impervious layer (6), lateral collector pipe (7), bottom discharge pipe (8), is prevented at drainage layer (4)
Water layer (9), hypothermic saline pond (11), Freezing Station (12), freezes delivery pipe (13) and delivery pipe (14) at secondary lining layer (10),
The former setting of freezing pipe (1) insertion is freezed to freeze within the scope of sealing in sealing layer (2), and thermal insulation concrete layer (3) is close to jelly
The inside for tying sealing layer (2) is laid with drainage layer (4) in thermal insulation concrete layer (3) inner wall top half, and lower half portion is laid with impervious
Layer (6), in lateral collector pipe (7) set on impervious layer (6) and one end of lateral collector pipe (7) with drainage layer (4) is seamless connects,
(5) lining cutting of branch sheath forms the inside of annulus in drainage layer (4) and impervious layer (6), and wherein branch sheath (5) includes waterproof layer (9)
With secondary lining layer (10), from inside to outside, then waterproof layer (9), waterproof layer (9) were tightly attached to drainage to secondary lining layer (10) before this
Layer (4) and impervious layer (6), bottom discharge pipe (8) are embedded in the inside of impervious layer (6), the other end insertion of lateral collector pipe (7)
The wall body of bottom discharge pipe (8), hypothermic saline pond (11) and one end of Freezing Station (12) are connected by delivery pipe (14), Freezing Station
(12) other end is connected with delivery pipe (13) is freezed, and freezing delivery pipe (13) can be connected with freezing pipe (1).
2. a kind of tunnel structure with antiseepage drain function according to claim 1, it is characterised in that: the drainage layer
(4) pervious concrete using intensity higher than 25Mpa, which is laid with, completes.
3. a kind of tunnel structure with antiseepage drain function according to claim 1, it is characterised in that: the lateral collection
Water pipe (7) is arranged near deformation joint.
4. a kind of tunnel structure with antiseepage drain function according to claim 3, it is characterised in that: the deformation
It seams and sets at soft or hard rock variation, light and shade boundary and section of providing fortification against earthquakes, every 30m setting is together.
5. a kind of frozen construction method of the tunnel structure with antiseepage drain function, it is characterised in that: specific step is as follows:
It first determines tunnel excavation range, freezes sealing layer (2) and be divided in outside tunnel excavation range, before equipment of drilling is in place, use
Instrument accurately determines aperture hole location, and to improve positioning accuracy, what then freezing pipe (1) insertion was delimited freeze sealing layer (2), by low
Thermohaline pond (11) provides hypothermic saline, is conveyed from delivery pipe (14) to hypothermic saline to Freezing Station (12), by freezing
It stands after (12) processing, is connected by freezing delivery pipe (13) with freezing pipe (1), the hypothermic saline of circulation is imported to stratum, freezes salt
Between -25~-28 DEG C, the time actively freezed is determined coolant-temperature gage general control by capacity of equipment, soil property, environment, and confirmation is frozen
Soil layer without formally being excavated (except saturated water) again after circulating water in native curtain, after formal excavation, according to the steady of Frozen Soil Cylinder
It is qualitative, improve brine temp, freeze the stage hence into maintenance, by-pass maintain to freeze brine temp general control -22~-
Between 25 DEG C, maintenance freeze-off time is determined by the time of structure construction, then building heat insulation concrete layer (3), is stablized tunnel and is opened
It digs temperature in range and the masonry of the impervious layer (6) of tunnel bottom position is first carried out, in after thermal insulation concrete layer (2) maintenance is good
Between to two sides, from bottom to top, bottom discharge pipe (8) is built in the impervious layer (6) immediately below tunnel bottom, lateral collector pipe (7)
Impervious layer (6) are built in, tunnel two sides are arranged in, are placed in deformation joint and construction joint position, every 30m is arranged together, impervious layer
(6), lateral collector pipe (7) and bottom discharge pipe (8) maintenance finish, and carry out the masonry of tunnel upper drainage layer, from top to bottom
Lining cutting, the lining cutting for carrying out branch sheath (5) after this work, laying and secondary lining layer (10) including waterproof layer (9), and two
Secondary lining cutting layer (10) is completed using dry sprayig process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181300.9A CN109236367A (en) | 2018-10-11 | 2018-10-11 | A kind of tunnel structure and its frozen construction method with antiseepage drain function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181300.9A CN109236367A (en) | 2018-10-11 | 2018-10-11 | A kind of tunnel structure and its frozen construction method with antiseepage drain function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236367A true CN109236367A (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811181300.9A Withdrawn CN109236367A (en) | 2018-10-11 | 2018-10-11 | A kind of tunnel structure and its frozen construction method with antiseepage drain function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350203A (en) * | 2020-03-06 | 2020-06-30 | 呼伦贝尔东明矿业有限责任公司 | Liquid-stopping freezing device and liquid-stopping freezing method |
| CN111472839A (en) * | 2020-05-13 | 2020-07-31 | 长江勘测规划设计研究有限责任公司 | Comprehensive seepage control-based quantitative calculation method for water discharge of water-rich tunnel construction |
| CN113431586A (en) * | 2021-07-07 | 2021-09-24 | 中铁一局集团厦门建设工程有限公司 | Anhydrous construction method for underground excavation region of subway |
| CN113790755A (en) * | 2021-09-06 | 2021-12-14 | 广东华隧建设集团股份有限公司 | Device for diagnosing and repairing low-temperature unfrozen defects caused by breakage of soft and hard interface freezing pipe |
| CN117027064A (en) * | 2023-03-22 | 2023-11-10 | 河南理工大学 | Temperature-control, seepage-prevention and energy-saving garbage underground landfill station structure suitable for frozen soil area |
-
2018
- 2018-10-11 CN CN201811181300.9A patent/CN109236367A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350203A (en) * | 2020-03-06 | 2020-06-30 | 呼伦贝尔东明矿业有限责任公司 | Liquid-stopping freezing device and liquid-stopping freezing method |
| CN111472839A (en) * | 2020-05-13 | 2020-07-31 | 长江勘测规划设计研究有限责任公司 | Comprehensive seepage control-based quantitative calculation method for water discharge of water-rich tunnel construction |
| CN111472839B (en) * | 2020-05-13 | 2022-03-29 | 长江勘测规划设计研究有限责任公司 | Comprehensive seepage control-based quantitative calculation method for water discharge of water-rich tunnel construction |
| CN113431586A (en) * | 2021-07-07 | 2021-09-24 | 中铁一局集团厦门建设工程有限公司 | Anhydrous construction method for underground excavation region of subway |
| CN113790755A (en) * | 2021-09-06 | 2021-12-14 | 广东华隧建设集团股份有限公司 | Device for diagnosing and repairing low-temperature unfrozen defects caused by breakage of soft and hard interface freezing pipe |
| CN113790755B (en) * | 2021-09-06 | 2024-03-22 | 广东华隧建设集团股份有限公司 | Device for diagnosing and repairing low-temperature unfrozen defect caused by fracture of freezing pipe with soft and hard interface |
| CN117027064A (en) * | 2023-03-22 | 2023-11-10 | 河南理工大学 | Temperature-control, seepage-prevention and energy-saving garbage underground landfill station structure suitable for frozen soil area |
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