CN108825269A - Mechanical Method service channel T socket part position adaptive waterproof construction - Google Patents
Mechanical Method service channel T socket part position adaptive waterproof construction Download PDFInfo
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- CN108825269A CN108825269A CN201810540216.5A CN201810540216A CN108825269A CN 108825269 A CN108825269 A CN 108825269A CN 201810540216 A CN201810540216 A CN 201810540216A CN 108825269 A CN108825269 A CN 108825269A
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- service channel
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- shield tunnel
- sealing
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 18
- 238000010297 mechanical methods and process Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 239000004568 cement Substances 0.000 claims abstract description 37
- 229920001971 elastomer Polymers 0.000 claims abstract description 31
- 239000005060 rubber Substances 0.000 claims abstract description 31
- 150000001875 compounds Chemical class 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 238000002425 crystallisation Methods 0.000 claims abstract description 10
- 230000008025 crystallization Effects 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 230000008595 infiltration Effects 0.000 claims abstract description 7
- 238000001764 infiltration Methods 0.000 claims abstract description 7
- 238000012946 outsourcing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 38
- 239000002002 slurry Substances 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 235000019353 potassium silicate Nutrition 0.000 claims description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 16
- 238000007569 slipcasting Methods 0.000 claims description 12
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- 229920002943 EPDM rubber Polymers 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 230000006798 recombination Effects 0.000 claims description 2
- 238000005215 recombination Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 238000003466 welding Methods 0.000 description 10
- 238000004078 waterproofing Methods 0.000 description 9
- 230000001680 brushing effect Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
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- 239000003292 glue Substances 0.000 description 5
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 235000011128 aluminium sulphate Nutrition 0.000 description 2
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- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
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- 229920002472 Starch Polymers 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
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- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
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- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- E21D11/385—Sealing means positioned between adjacent lining members
- E21D11/386—Sealing means positioned between adjacent lining members inflatable sealing means
-
- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/14—Lining predominantly with metal
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of Mechanical Method service channel T socket part position adaptive waterproof construction, including outsourcing waterproof system, the compound section of jurisdiction waterproof construction of shield tunnel, shield tunnel wall after sealing injecting cement paste, service channel section of jurisdiction waterproof construction and service channel wall after sealing injecting cement paste；Outsourcing waterproof system include be set to tunnel main structure bottom plate, top plate closure steel plate and be set to tunnel main structure two sides side wall block steel plate, block steel plate subelement modularity be welded on service channel steel pipe sheet；The compound section of jurisdiction waterproof construction of shield tunnel include the compound section of jurisdiction of shield tunnel, shield tunnel concrete pipe sheet, the hydro-expansive rubber item of longitudinal joint, hydro-expansive rubber thin slice, cement-base infiltration crystallization type coating, circumferential weld water-swellable gasket.The beneficial effects of the invention are as follows：The processing of closure steel plate industry modularity that the present invention uses, easy for installation, piece is few, waterproof effect is good, and can guarantee construction speed.
Description
Technical field
The present invention relates to a kind of waterproof constructions of tunnel structure, more particularly, to a kind of Mechanical Method service channel and shield tunnel
The waterproof construction of road T socket part position.
Background technique
With rapid economic development, China Transportation Industry be also pushed ahead with speed with rapid changepl. never-ending changes and improvements, wherein
Iron is also to build in more and more cities.Currently, China's Metro Tunnel mainly uses Dryopteris sublaetaChing et Hsu side
Method, to ensure construction quality and construction safety, the waterproof in construction is the most important thing of entire work progress, needs to carry out subway
The waterproofness of main body.During metro operation, the percolating water situation in tunnel is also very universal, and harmfulness is more serious, such as
Fruit cannot efficiently solve leakage problem, then can affect greatly to the total quality of subway tunnel, to influence ground
The service life of iron tunnel structure and safety.In the waterproof of subway tunnel, construction joint is part the weakest, therefore,
It is particularly important to the water-proofing treatment work of construction joint.Under normal circumstances, construction joint refers to due to by construction method or technology
Influence, lead to occur gap in concrete structure.This largely affects the self waterproofing effect of concrete.According to applying
The actual demand and design of work project need, and reasonable solution are taken, to improve the total quality of subway tunnel.
The water-repellent type of subway tunnel can be divided into 3 kinds, i.e. dewatering type, water proof type and anti-row's mating type at present.Waterproof
Type is that very directly, easily a kind of drainage pattern, application are relatively broad.Since Structural Lining is constantly subjected to the shadow of water pressure
It rings, compared to for other two methods, leakproof is not strong, and leak once occurs and is also difficult to solve；Anti- row's mating type energy
Waterproof and the advantage of draining are organically combined, though reduce the hydraulic pressure of Structural Lining to a certain extent based on waterproof
Power, thus a possibility that greatly reducing leak, meanwhile, the subway tunnel drainage system expense excessive without consumption.It is selecting
When selecting the water-repellent type of subway tunnel, local engineering geology, hydrogeology, subway waterproof-ing grade and environment are comprehensively considered
It is required that etc., under the premise of draining does not adversely affect environment, meet the reliability of waterproof.
To solve the problems, such as that freezing Freezing Method for Cross-passage Construction is brought, the ground such as Europe, Japan and Hong Kong are carried out in succession
The research of service channel development machine, research and development non-freezing, main tunnel space are small, cut the technologies items such as export & import, channel design complexity
Mechanical Method Freezing Method for Cross-passage Construction under part is equipped and technology, main tunnel-contact admittance tunnel T socket part position waterproof in this technology
The safety used subsequent for tunnel is even more important.
In recent years, a large amount of research work, application number have been done in terms of tunnel water proofing and construction method both at home and abroad
201010277951.5 patent disclose《A kind of construction method of tunnel waterproof system》, which includes being set to tunnel
The side wall waterproof steel plate of the waterproof slab steel plate of road main structure bottom plate and the two sides for being set to tunnel main structure, this method packet
It includes modularity and processes the subelement of waterproof steel plate, waterproof slab steel plate construction of leveling blanket, mounting base waterproof steel plate and installation
Side wall waterproof steel plate and subsequent operation.The patent of application number 201510724005.3 discloses《It a kind of tunnel waterproofing construction and applies
Work method》, which is made of the permeable layer and waterproof layer being sequentially formed at outside base, and waterproof layer is by muti-piece waterproof board group
At the waterproof layer of same section is applied by one whole splash guard, is formed overlap joint along the adjacent splash guard of tunnel depth direction and is fixed.
The construction method of tunnel waterproof system disclosed in the prior art carries out large tunnel for high-moisture region
When construction, generally existing construction procedure is various, method is complicated is difficult to realize, applies that low efficiency, long in time limit and there are comparable peaces
The defect of full property problem.Some even after the completion of tunnel waterproof system applies, is difficult to guarantee constructing tunnel and subsequent use
Safety.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, it is adaptive to provide a kind of Mechanical Method service channel T socket part position
Answer waterproof construction.
This Mechanical Method service channel T socket part position adaptive waterproof construction, including outsourcing waterproof system, shield tunnel are compound
Section of jurisdiction waterproof construction, shield tunnel wall after sealing injecting cement paste, service channel section of jurisdiction waterproof construction and service channel wall after only
Water injecting cement paste；
Outsourcing waterproof system include be set to tunnel main structure bottom plate, top plate closure steel plate and be set to tunnel main body
The side wall of structure two sides blocks steel plate, blocks steel plate subelement modularity and is welded on service channel steel pipe sheet；
The compound section of jurisdiction waterproof construction of shield tunnel includes the compound section of jurisdiction of shield tunnel, shield tunnel concrete pipe sheet, longitudinal joint
Hydro-expansive rubber item, hydro-expansive rubber thin slice, cement-base infiltration crystallization type coating, circumferential weld water-swellable gasket,
Ethylene propylene diene rubber elastic sealing gasket, waterstop sealing pad and sealing plate；Hydro-expansive rubber item, hydro-expansive rubber thin slice, water
Mud base infiltration crystallization type coating surface is closely attached to shield tunnel multiple tube on piece, and the compound section of jurisdiction part ring of shield tunnel, longitudinal joint are set
Set ethylene propylene diene rubber elastic sealing gasket；Waterstop sealing pad, sealing plate are fixed on the compound section of jurisdiction of shield tunnel by sealing bolt
On；Sealing injecting cement paste includes cement-silicate two fluid grouting reinforcing body after the wall of shield tunnel；
Service channel section of jurisdiction waterproof construction includes service channel steel pipe sheet, service channel concrete pipe sheet, water-swellable rubber
Foam strip is set between the vertical of glue gasket and foam strip, service channel steel pipe sheet and service channel concrete pipe sheet, circumferential weld, is met
Water-expansible rubber gasket；Sealing injecting cement paste includes cement-silicate two fluid grouting reinforcing body and ultra-fine water after the wall of service channel
Muddy water glass slip casting sealing and reinforcing body.
As preferred：Gasket is pressed completely in people's gasket groove, and the sectional area of gasket groove is not less than gasket
Sectional area, the depth-to-width ratio of filleting slot are not less than 2.5, and groove depth is 25~55mm, and single side groove width is 5~10mm.
As preferred：Waterstop sealing pad is High-molecular rubber material.
As preferred：The dual slurry of cement-silicate two fluid grouting reinforcing body is made of A liquid and B liquid, A, B liquid each component
Volume proportion is 1: 1；A liquid group is divided into ordinary portland cement and water, and the weight proportion of A liquid each component is：Cement 30~50%,
Remainder is water；B liquid group is divided into waterglass and water, and the weight proportion of B liquid each component is：Waterglass 45~50%, remainder
It is divided into water.
As preferred：Block steel plate, service channel steel pipe sheet, the triangular gap closure slip casting in the compound section of jurisdiction of shield tunnel
Slurries be adaptive expansion slurry, be made of A liquid and B liquid, the volume proportion of A, B liquid each component is 1: 1；A liquid group is divided into swollen
The weight proportion of swollen cement and water, A liquid each component is：Expanding cement 30~50%, remainder are water；B liquid group is divided into water glass
The weight proportion of glass and water, B liquid each component is：Waterglass 45~50%, remainder are water.
As preferred：Reinforced concrete circle beam, the setting of service channel lower part is arranged in shield tunnel and service channel junction
Armored concrete.
The beneficial effects of the invention are as follows：
1, the closure steel plate industry modularity processing that the present invention uses, easy for installation, piece is few, waterproof effect is good
It is good, and can guarantee construction speed.In the solution of the present invention, by the subelement deformation joint welding steel for blocking steel plate
Waterstop makes to block the double effects that steel plate is provided simultaneously with rigid waterproofing and outboard template, improves and apply according to the method for the present invention
The waterproof performance of the tunnel waterproof system of work, it is ensured that the construction safety and engineering matter of tunnel waterproof system or even entire Tunnel Engineering
Amount.
2, the new early strength of adaptive expansion slurry that the present invention uses is high, and later strength growth is larger, and long-term strength is steady
It is fixed to rise, and since expanding cement is in the high sulfur type aquation sulphur aluminic acid (entringite) of hardening initial stage generation, so that dual slurry is generated volume
Expansion, improves the pore structure of slurry under constraint condition, and reduces overall porosity, and capillary aperture reduces, to improve slurry
Density and impermeability, so as to reduce Mechanical Method service channel to a certain extent and shield tunnel T connects part leakage
Possibility.
3, construction method of the invention is easy to operate, strong operability, and construction efficiency is high.
Detailed description of the invention
Fig. 1 is Mechanical Method Freezing Method for Cross-passage Construction schematic diagram；
Fig. 2 is Mechanical Method service channel T socket part position waterproof construction schematic diagram；
Fig. 3 is service channel and shield tunnel linked system schematic diagram；
Fig. 4 is service channel section of jurisdiction waterproof construction schematic diagram；
Fig. 5 is waterproof structure of shield-structured tunnel segment schematic diagram；
Fig. 6 is elastic sealing gasket schematic diagram；
Fig. 7 is elastic sealing gasket cross-sectional view；
Description of symbols：1- shield tunnel concrete pipe sheet；The compound section of jurisdiction of 2- shield tunnel；Connector between the section of jurisdiction 3-
System；4- service channel steel pipe sheet；5- service channel concrete pipe sheet；6- steel pipe sheet injected hole；7- sealing bolt；8- service channel
Reserve injected hole in section of jurisdiction；9- superfine cement waterglass slip casting sealing and reinforcing body；10- aluminium sulfate slightly expanded concrete；11- meets water
Expanded rubber item；12- blocks steel plate；13- reinforced concrete circle beam；14- rigid reinforcement body；15- waterstop sealing pad；16- sealing
Plate；The compound section of jurisdiction concrete pipe sheet of 17-；18- foam strip；19- hydro-expansive rubber sealing cushion；20- water-swellable gasket；
21- cement-base infiltration crystallization type coating；22- hydro-expansive rubber thin slice；23- ethylene propylene diene rubber elastic sealing gasket；24- cement
Silicate double solution grouting reinforcing body；25- armored concrete.
Specific embodiment
The present invention is described further below with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
Embodiment one
As shown in Figures 1 to 5, the Mechanical Method service channel T socket part position adaptive waterproof construction, mainly by shield
Behind structure tunnel and service channel T socket part position setting outsourcing waterproof system, the compound tunnel segment structure waterproof of 7 ring steel reinforced concrete of shield tunnel and wall
Injecting cement paste sealing, service channel tunnel segment structure waterproof and grouting behind shaft or drift lining body sealing, and block steel plate 12, service channel steel pipe sheet
4, it is anti-to form a set of service channel and shield tunnel T socket part position to block slip casting for the shield tunnel triangular gap in compound section of jurisdiction 2
Water system.The setting of 3 region of interest of linked system is met between shield tunnel concrete pipe sheet 1, the compound section of jurisdiction 2 of shield tunnel and section of jurisdiction
Water-expansible rubber item 11, water-swellable gasket 20, cement-base infiltration crystallization type coating 21, hydro-expansive rubber thin slice 22, three
First EP rubbers elastic sealing gasket 23 and sealing bolt 7 use secondary grouting in shield tunnel outer wall, form cement-silicate
Two fluid grouting reinforcing body 24, to form the waterproof construction system of shield tunnel.Service channel steel pipe sheet 4 is micro- using aluminium sulfate
Expansive concrete 10 is filled, and foam is used between service channel steel pipe sheet 4 and the vertical of service channel concrete pipe sheet 5, circumferential weld
Item 18, hydro-expansive rubber sealing cushion 19 are carried out joint seal and are manually infused after the completion of assembled using steel pipe sheet injected hole 6
Slurry is reserved injected hole 8 using service channel section of jurisdiction and is manually infused to form superfine cement waterglass slip casting sealing and reinforcing body 9
Slurry, to form cement-silicate two fluid grouting reinforcing body 24.
After the completion of shield tunnel, service channel are constructed respectively, reinforcing bar is set in shield tunnel and service channel T socket part position
Concrete ring beam 13 and armored concrete 25.It blocks steel plate 12 and carries out subelement planning, modularity processing, is welded on connection at assembly
Top, bottom and the side of network channel pipe piece 4.Using the fixed sealing of sealing bolt 7 on the inside of compound section of jurisdiction concrete pipe sheet 17
Gasket 15 and sealing plate 16, it is adaptively swollen in shield tunnel and service channel gap site injection superfine cement waterglass biliquid
Swollen slurry is to form superfine cement waterglass slip casting sealing and reinforcing body 9, to constitute shield tunnel and service channel T socket part position
Water-proof system.
It blocks steel plate 12 and uses Q235B grades of steel, watertightness weld seam, it then follows first up and down, the principle that rear left backhand welding connects.Butt welding
45 ° of grooves should be set up to be fully welded, overlap welding should be fully welded, and welding uses E43XX type welding rod.Surface should be evened after the completion of welding out, gone forward side by side
100% magnetic spy of row wound.Corrosion-inhibiting coating after welding destroys should all brush solvent-free super thick epoxy coating 2 again.Block steel
12 blanking cut lengths allowance control of plate is within hand cut ± 1.5mm, within automatic semi-automatic cutting ± 1.0mm, vertically
Within the 2% of steel plate thickness, and within the scope of ± 1.5mm, cutting periphery is required to be smooth smooth for degree control.Steel plate 12 is blocked to exist
The processing of elimination burr, greasy dirt and attachment is done before use, and in the inorganic antirusting paint of upstream face brushing for blocking steel plate 12.
Two kinds of gasket joints on the compound section of jurisdiction 2 of shield tunnel generate after being pressurized by gasket along arc length direction
Compression and hydro-expansive rubber meet the expansive force generated after water and reach waterproof efficacy.The compound section of jurisdiction 2 of shield tunnel
Seam between shield tunnel concrete pipe sheet 1 is using water-swellable water-stop glue as temporary leaking water measure.Shield tunnel is multiple
2 circumferential weld surface mount of section of jurisdiction, one of 2mm excellent pay and conditions water-expansible rubber thin slice 22 is closed, position should be close to the steel plate provided with water-stop glue.
Extrados, each 100mm range brushing in intrados two sides of shield tunnel compound section of jurisdiction 2 and 1 seam of shield tunnel concrete pipe sheet
Cement based penetration crystallization type water proofing paint, dosage 1.5kg/m2.Sealing injecting cement paste includes that cement-silicate two fluid grouting adds after wall
Solid 24.Segment joint gasket should meet under the seam maximum joint open of calculating and the magnitude of misalignment of estimation, buried depth head 2
Non-leakage technical requirements under~3 times of hydraulic pressure.
The technical performance index (water bar, hydro-expansive rubber thin slice index) of hydro-expansive rubber sealing cushion sizing material 19 is such as
Shown in table 1.
The technical performance index of 1 water-expansible rubber gasket sizing material of table
The physical and mechanical property indexs of water-swellable water-stop glue are as shown in table 2.
The physical and mechanical property indexs of 2 water-swellable water-stop glue of table
The physical and mechanical property indexs of ethylene propylene diene rubber elastic sealing gasket 23 are as shown in table 3.
The physical and mechanical property indexs of 3 EPDM of table (EPDM) caoutchouc elasticity gasket
Cement based penetration crystallization type water proofing paint performance indicator is as shown in table 4.
4 cement based penetration crystallization type water proofing paint performance indicator of table
Cement-silicate two fluid grouting reinforcing body 24 uses 2 Double-liquid mud-injection pump synchronous groutings, and synchronous grouting is using lag
Artificial slip casting.Slurries are cement-water-clay system, are injected by the injected hole that section of jurisdiction is reserved, and injection point is 4 points, pressure
Control is less than 0.35MPa, and injection phase is 4 rings after front ring；After shield receives and completes the installation of portal interface, for filling slurry
Liquid shrinks the gap generated and blocks breakthrough should carry out secondary grouting after completing driving, and slurries use cement-sodium silicate liquid
It starches, pressure control is less than 0.35MPa in injection process.
Closure steel plate 12, service channel steel pipe sheet 4, the injection of the shield tunnel triangular gap in compound section of jurisdiction 2 are adaptive swollen
Swollen slurry forms slip casting sealing and reinforcing body with plugging gap, and the sealing and reinforcing body is arranged by service channel steel pipe sheet 4
Injected hole inject adaptive expansion dual slurry to triangular gap, slurries include A liquid and B liquid composition, A, B liquid each component
Volume proportion is 1: 1.A liquid group is divided into expanding cement and water, and the weight proportion of A liquid each component is：Expanding cement 30~50% remains
Remaining part is divided into water.B liquid group is divided into waterglass and water, and the weight proportion of B liquid each component is：Waterglass 45~50%, remainder
For water.The specific surface area of expanding cement particle is typically up to 4800 ± 200cm2/ g, the free swelling rate of expanding cement is 8~10 ×
10-4, the seif-citing rate of 0.1~0.3MPa can be established in dual slurry, met the sedimentation of T socket part position, shunk requirement；Expanding cement coagulation
Native anti-penetration grade is greater than S30.
Embodiment two
Ningbo Rail Transit Line 3 first stage of the project south business district station~Yinzhou District government station section service channel, south
Business district station~Yinzhou District government station starting point mileage ZDK7+794.800, terminal mileage ZDK8+754.100, length of tunnel is about
959.3m.Service channel mileage is ZDK8+214.377, and buried depth is 16.94m at this, line spacing is 17m.The service channel uses
Mechanical Method construction.Shield tunnel diameter 6200, section of jurisdiction thickness 350 lay 8 injected holes on service channel hole periphery.Contact is logical
Road digging diameter 3290mm, small section of jurisdiction diameter 3150mm, ring width 550mm, the every ring in the small section of jurisdiction of service channel lay 5 injected holes.
1, shield tunnel, service channel section of jurisdiction be vertical, ring seam waterproof
Pipe sheet assembling uses staggered joint erection.Just build ring (section of jurisdiction) piecemeal use one piece of block that binds, two pieces of adjacent blocks, three pieces
The scheme — that is, 5+1 mode of calibrated bolck.This section uses the small block that binds, radial first to overlap 2/3, then 1/3 method of longitudinal push-in is applied
Work.
(1) gasket waterproof
Tunnel duct piece seam waterproof is using sealings such as ethylene propylene diene rubber elastic sealing gaskets 23, in the gasket groove of section of jurisdiction
Ethylene propylene diene rubber elastic sealing gasket 23 is pasted, it is compacted come waterproof by compression by it, as shown in Figure 6.
Elastic packing cushion material is ethylene propylene diene rubber, and in factory process at sharp-featured frame shape rubber ring, elasticity is close
The cross section of packing is in detail as shown in Figure 7.Elastic sealing gasket is marched into the arena before stickup, it is necessary to by product send to qualified inspection center into
Its examination of materials of row.
Brushing one pack system neoprene-phenolic aldehyde alite paste in the gasket groove of section of jurisdiction.Before brushing, section of jurisdiction surface should be dried, and be applied
Alite paste uniformly should answer full coat in gasket groove when brush.It is cool to set a period of time (10~15min, with gas after alite paste brushing
Epidemic disaster and it is different), be inserted in gasket groove when finger contact is not viscous, then by the frame shape rubber ring processed.Gasket exists
Paste it is preposition in warming shaping 36h in 40 DEG C~60 DEG C of drying chamber, avoid gasket flexure, deformation.After stickup, section of jurisdiction quadrangle
For gasket there is not allowed that shrugging, sunken shoulder phenomenon, entire gasket surface should forbid skew, distortion in the same plane.Section of jurisdiction exists
It pastes in installing gasket 12h, underground must not be sent assembled.The gasket of block two sides of binding applies surface lubricant before assembly, with
Reduce mill resistance when binding block insertion between gasket.
(2) filleting waterproof
Filleting operation is to achieve the purpose that seal waterproof by the filling and bonding force of caulking material.Generally require filleting material
Material has good cementability (bear the hydrostatic pressure of lining cutting outer wall) with basal plane, preferable elasticity (adapt to tunnel deformation),
And its material property must keep stable.When pipe sheet assembling, the filleting slot fragmentation sometimes at corner and edge, it is serious very
To exposing reinforcing bar.Underground water will be directly entered tunnel by section of jurisdiction crack around the elastic sealing gasket of seam in this way, make simultaneously
At steel bar corrosion, structural strength is influenced.The section of jurisdiction of damage should be repaired when repairing to original size, the especially shape of filleting slot
Shape and size.The silt sundries in filleting slot is removed with wire brush, is rinsed well with clear water.Brushing interfacial agents are to make neoprene
The firm connection of latex cement and section of jurisdiction is not fallen off and seamless.Interface treating agent uses YJ-302 interface treating agent.Brushing range
It is within the scope of slot inner wall, each 15mm range in longitudinal joint two sides and each 16mm in circumferential weld two sides.The interfacial agents mixed and stirred every time should be at 2 hours
Inside it is finished.
(3) node waterproof
Shield tunnel bolt hole, hole for hoist (injected hole) use water swelling rubber ring sealing.Rubber ring internal diameter 25mm, outside
Diameter 39mm.
(4) waterproof outside section of jurisdiction
After service channel shield driving, by manually injecting closely knit slurries to this gap in time, reach outside section of jurisdiction
Waterproof and the purpose for controlling stratum settlement.
(5) secondary grouting
For shield tunnel, to carrying out secondary grouting within the scope of 20 rings before and after the left and right line of proposed service channel.Selection can infuse
Property is strong, durable, consolidating strength is high, the normal silicate of relative low price pollution-free to underground water and ambient enviroment
Cement slurry.
2, steel pipe sheet sealing
The steel construction part welding for duct pieces of shield tunnel being originated and being received 6 pieces of compound sections of jurisdiction at portal is linked as entirety, adopts
It is reduced and is deformed with wandering sequence, divide multi-layer welding, 3~5mm of every layer of throat thickness.Block 12 blanking cut lengths allowance control of steel plate
Within hand cut ± 1.5mm, within automatic semi-automatic cutting ± 1.0mm, degree control steel plate thickness 2% it
It is interior, and within the scope of ± 1.5mm, cutting periphery is required to be smooth smooth.The place of elimination burr, greasy dirt and attachment is done before use
Reason, and in the inorganic antirusting paint of upstream face brushing for blocking steel plate 12.For closure steel plate 12, service channel steel pipe sheet 4, shield
The triangular gap in tunnel recombination section of jurisdiction 2, the adaptive expansion slurry of slip casting injection being arranged by steel pipe sheet, with plugging gap shape
At slip casting sealing and reinforcing body.
Claims (6)
1. a kind of Mechanical Method service channel T socket part position adaptive waterproof construction, it is characterised in that including outsourcing waterproof system, shield
Tunnel recombination section of jurisdiction waterproof construction, shield tunnel wall after sealing injecting cement paste, service channel section of jurisdiction waterproof construction and service channel
Wall after sealing injecting cement paste；
Outsourcing waterproof system include be set to tunnel main structure bottom plate, top plate closure steel plate (12) and be set to tunnel main body
The closure steel plate (12) of structure two sides blocks steel plate (12) subelement modularity and is welded on service channel steel pipe sheet (4)；
The compound section of jurisdiction waterproof construction of shield tunnel includes the compound section of jurisdiction of shield tunnel (2), shield tunnel concrete pipe sheet (1), indulges
The chance of the hydro-expansive rubber item (11) of seam, hydro-expansive rubber thin slice (22), cement-base infiltration crystallization type coating (21), circumferential weld
Water Expansion sealing pad (20), ethylene propylene diene rubber elastic sealing gasket (23), waterstop sealing pad (15) and sealing plate (16)；It is swollen to meet water
Swollen rubber strip (11), hydro-expansive rubber thin slice (22), cement-base infiltration crystallization type coating (21) surface are closely attached to shield tunnel
On compound section of jurisdiction (2), the compound section of jurisdiction of shield tunnel (2) part ring, longitudinal joint setting ethylene propylene diene rubber elastic sealing gasket (23)；Only
Water seal washer (15), sealing plate (16) are fixed on the compound section of jurisdiction of shield tunnel (2) by sealing bolt (7)；Shield tunnel
Sealing injecting cement paste includes cement-silicate two fluid grouting reinforcing body (24) after wall；
Service channel section of jurisdiction waterproof construction includes service channel steel pipe sheet (4), service channel concrete pipe sheet (5), water-swellable
The vertical of rubber gasket (19) and foam strip (18), service channel steel pipe sheet (4) and service channel concrete pipe sheet (5), circumferential weld
Between be arranged foam strip (18), hydro-expansive rubber sealing cushion (19)；Sealing injecting cement paste includes cement water after the wall of service channel
Glass two fluid grouting reinforcing body (24) and superfine cement waterglass slip casting sealing and reinforcing body (9).
2. Mechanical Method service channel T socket part position adaptive waterproof construction according to claim 1, it is characterised in that gasket
Completely in pressure people's gasket groove, the sectional area of gasket groove is not less than the sectional area of gasket, and the depth-to-width ratio of filleting slot is not
Less than 2.5, groove depth is 25~55mm, and single side groove width is 5~10mm.
3. Mechanical Method service channel T socket part position adaptive waterproof construction according to claim 1, it is characterised in that sealing is close
Packing (15) is High-molecular rubber material.
4. Mechanical Method service channel T socket part position adaptive waterproof construction according to claim 1, it is characterised in that cement water
The dual slurry of glass two fluid grouting reinforcing body (24) is made of A liquid and B liquid, and the volume proportion of A, B liquid each component is 1: 1；A liquid group
It is divided into ordinary portland cement and water, the weight proportion of A liquid each component is：Cement 30~50%, remainder are water；B liquid group
It is divided into waterglass and water, the weight proportion of B liquid each component is：Waterglass 45~50%, remainder are water.
5. Mechanical Method service channel T socket part position adaptive waterproof construction according to claim 1, it is characterised in that block steel
The slurries that plate (12), the triangular gap in service channel steel pipe sheet (4), the compound section of jurisdiction of shield tunnel (2) block slip casting are adaptive
Slurry should be expanded, is made of A liquid and B liquid, the volume proportion of A, B liquid each component is 1: 1；A liquid group is divided into expanding cement and water, A
The weight proportion of liquid each component is：Expanding cement 30~50%, remainder are water；B liquid group is divided into waterglass and water, and B liquid is each
The weight proportion of component is：Waterglass 45~50%, remainder are water.
6. Mechanical Method service channel T socket part position adaptive waterproof construction according to claim 1, it is characterised in that shield tunnel
Armored concrete (25) are arranged in road and service channel junction setting reinforced concrete circle beam (13), service channel lower part.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109339824A (en) * | 2018-12-04 | 2019-02-15 | 中铁二十四局集团有限公司 | A kind of duct pieces of shield tunnel Treatment Measures to Leakage method |
| CN110130316A (en) * | 2019-05-13 | 2019-08-16 | 南京林业大学 | The method of thaw collapse after service channel bottom pre-pouring grout system and control freezing construction |
| CN110410113A (en) * | 2019-09-08 | 2019-11-05 | 天津大学前沿技术研究院有限公司 | A kind of concrete pipe sheet filleting plugging device and method for blocking |
| CN110608052A (en) * | 2019-10-22 | 2019-12-24 | 湘潭大学 | Tunnel segment based on high-performance cement-based composite material and construction method thereof |
| CN111894605A (en) * | 2020-08-06 | 2020-11-06 | 中铁隆工程集团有限公司 | Structural design method of tunnel contact channel suitable for soft soil stratum |
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| CN114060040A (en) * | 2021-11-11 | 2022-02-18 | 上海市基础工程集团有限公司 | Horizontal T-joint construction method for directly jacking pipe into shield tunnel |
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| CN109339824A (en) * | 2018-12-04 | 2019-02-15 | 中铁二十四局集团有限公司 | A kind of duct pieces of shield tunnel Treatment Measures to Leakage method |
| CN110130316A (en) * | 2019-05-13 | 2019-08-16 | 南京林业大学 | The method of thaw collapse after service channel bottom pre-pouring grout system and control freezing construction |
| CN110410113A (en) * | 2019-09-08 | 2019-11-05 | 天津大学前沿技术研究院有限公司 | A kind of concrete pipe sheet filleting plugging device and method for blocking |
| CN110608052A (en) * | 2019-10-22 | 2019-12-24 | 湘潭大学 | Tunnel segment based on high-performance cement-based composite material and construction method thereof |
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| CN111963211A (en) * | 2020-08-21 | 2020-11-20 | 上海市隧道工程轨道交通设计研究院 | Steel structure for connecting shield tunnel with external channel |
| CN113202505A (en) * | 2021-05-29 | 2021-08-03 | 浙江神州科技化工有限公司 | Subway segment gap sealing construction process |
| CN113338993B (en) * | 2021-06-23 | 2022-08-09 | 中铁一局集团有限公司 | Connecting channel reinforcing ring beam structure and construction method thereof |
| CN113338993A (en) * | 2021-06-23 | 2021-09-03 | 中铁一局集团有限公司 | Connecting channel reinforcing ring beam structure and construction method thereof |
| CN113622948A (en) * | 2021-07-23 | 2021-11-09 | 北京市政建设集团有限责任公司 | Shield tunnel connection channel pipeline device |
| CN113622948B (en) * | 2021-07-23 | 2023-08-18 | 北京市政建设集团有限责任公司 | Shield tunnel connecting channel pipeline device |
| CN113482690A (en) * | 2021-08-16 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Calculation method for air distribution of tunnel ventilation system of ramp air exhaust type single-ramp highway |
| CN114109441A (en) * | 2021-10-08 | 2022-03-01 | 陕西同人应用材料有限公司 | Composite cavity vacuum tension elastic die and rapid construction process using same |
| CN114109441B (en) * | 2021-10-08 | 2024-05-28 | 陕西同人应用材料有限公司 | Composite cavity vacuum tension elastic die and rapid construction process using same |
| CN114060040A (en) * | 2021-11-11 | 2022-02-18 | 上海市基础工程集团有限公司 | Horizontal T-joint construction method for directly jacking pipe into shield tunnel |
| CN114837704A (en) * | 2022-06-13 | 2022-08-02 | 深圳地铁建设集团有限公司 | Sealing assembly suitable for plugging segment grouting hole and construction method thereof |
| CN114837704B (en) * | 2022-06-13 | 2024-10-29 | 深圳地铁建设集团有限公司 | Sealing assembly suitable for plugging of grouting holes of segments and construction method of sealing assembly |
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