CN107762532B - Tunnel vault band mould grouting construction method - Google Patents
Tunnel vault band mould grouting construction method Download PDFInfo
- Publication number
- CN107762532B CN107762532B CN201610706453.5A CN201610706453A CN107762532B CN 107762532 B CN107762532 B CN 107762532B CN 201610706453 A CN201610706453 A CN 201610706453A CN 107762532 B CN107762532 B CN 107762532B
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- Prior art keywords
- slip casting
- concrete
- grouting
- circular hole
- tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000007569 slipcasting Methods 0.000 claims abstract description 57
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 14
- 239000011440 grout Substances 0.000 claims description 13
- 210000002445 nipple Anatomy 0.000 claims description 8
- 244000144985 peep Species 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims description 5
- 238000005345 coagulation Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 241000233855 Orchidaceae Species 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 230000036039 immunity Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000009412 basement excavation Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 210000004911 serous fluid Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- E21D11/04—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
- E21D11/102—Removable shuttering; Bearing or supporting devices 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
- E21D11/04—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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (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
Tunnel vault band is molded into slurry construction party, its construction method step of method is as follows: installation lining trolley → determine that coagulating the dedicated filling mortar of native slip casting → preparation → starting slip casting all-in-one machine slip casting → slip casting terminates → in the fixed Grouting Pipe → observation vault template of slip casting length of tube → installation lays down flange;Using band mould slurry injection technique and the microdilatancy, high-flowing concrete slip casting of the party, bonding force is strong, has to the section gap that concreting is formed and repairs, comprehensive performance is better than the performance of lining concrete;And the risk for reducing tunnel lining concrete cracking, coming to nothing and falling off, tunnel-liner is improved to the immunity of geologic risk, the risk of disaster occurs for tunnel-liner when reducing operation, can be primary full, the later period no longer spends more construction cost;Pass through the application of this method, it is ensured that tunnel-liner quality.
Description
Technical field
The present invention relates to a kind of method for tunnel construction, specifically a kind of tunnel vault band mould grouting construction method.
Background technique
Lining construction due to the limitation of lining concrete, cause after two backings especially vault will appear hole,
Interlayer etc. comes to nothing area, Concrete Filled leakiness, the strong influence integral strength of lining concrete.And general tunnel two
Backing grouting behind shaft or drift lining is the secondary construction after lining cutting completion, and cement slurry injecting paste material is at low cost, but its brittleness is big, and intensity is low,
It shrinks seriously, bleeding is more, and generally requires repeatedly drilling, slip casting and radar detection, and construction cost is higher, especially the later period two
When secondary slip casting, the advantage that lining cutting overall mechanical properties are improved with the timely slip casting of mould is lost, slip casting forms " two layers of skin " again
Structure.Meanwhile slip casting has the function of antiseepage to a certain extent, it therefore, must be next closely knit to backfill slip casting in constructing tunnel
The area of coming to nothing of two lining concrete behinds, it is ensured that the integral strength of lining concrete enhances water-proof function.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of tunnel-liner vault band template mortar depositing construction sides
Method, this method are that slip casting is served as a contrast using a template two, and the time controls in 2h or so, and are not take up the normal two lining mortar depositing construction time;
Used Grouting Pipe and microdilatancy, slow setting, early strength mortar, the timely slip casting after lining cutting pours can effectively improve lining cutting coagulation
Adhesive integrity between soil and grouting serous fluid;Meanwhile there is reduction material consumption, the investment of manpower is reduced, engineering cost is reduced
The effect of, and can be applied in the constructing tunnels such as highway, subway, mine.
The technical scheme is that tunnel vault band mould grouting construction method, construction method step are as follows:
Step 1: assembling lining trolley is mounted on after being secured in position on the track of tunnel ground, by slip casting all-in-one machine processed
It is placed in the ground surface platform of lining trolley bottom, the both ends of delivery hose are connected to reduction nipple and slip casting all-in-one machine processed goes out
On expects pipe mouth;
Step 2: determining Grouting Pipe cutting length, ready first Grouting Pipe or exhaust pipe is passed through pre- at the top of trolley
Place's progress " trying on " of boxing out measures;First line of label in the first Grouting Pipe of vault template outer, for detecting lining cutting thickness
Whether degree meets the requirements;Article 2 graticule, i.e. the first Grouting Pipe are drawn from vault template outer+locating sleeve length 4.3cm+2cm
Cutting length;
Step 3: fixed Grouting Pipe is installed: after the first Grouting Pipe of well cutting is penetrated the first circular hole in vault template,
The first Grouting Pipe is fixed in the first circular hole in vault template with flange;
Step 4: observation judges vault template inner concrete slip casting or situation of rushing to summit: successively seeing according to the sequence of fill orifice
The pulp situation of concrete grouting hole or peep hole, the concrete grouting checked in vault template or situation of rushing to summit are examined, judges to encircle
Whether concrete grout is filled in top template;
Step 5: it prepares dedicated filling mortar: using dedicated slurrying slip casting all-in-one machine 8, prepare dedicated filling mortar and make
For concrete grouting material, dedicated filling mortar is as grout material (in the ratio of water to material of configuration: water: filling mortar=18:100(weight
Than), separately add 0.08% micro-expanding agent;Cement preferably uses portland cement;Injecting paste material requires continuous mixing, tight during mixing
Lattice monitor every material utilization amount, it is ensured that grouting quality;
Step 6: slip casting: starting slip casting all-in-one machine processed successively observes the second circular hole, third circular hole and the 4th circular hole, simultaneously
Make gas vent, for whether flowing out infused concrete grout, when other peep holes outflow concrete grouting reaches the mixed of equal densities
When solidifying soil paste body, it is immediately finished note concrete grout, which is closed;When pressure gauge reaches 1.0MPa, aperture is not flowed yet
Concrete grouting out should replace next injected hole and carry out concrete grouting again, until intermediate second circular hole, third circular hole and the
Peephole on 12 end of four circular holes and template stops slip casting when flowing out concrete grout 3-5s;
Step 7: slip casting terminates, and unloads from the pulp nozzle and reduction nipple tail end nozzle of slip casting all-in-one machine processed mixed
Solidifying soil slip casting delivery hose, blocks slip casting pore, after concrete grouting initial set, lays down locating flange, goes to next hole slip casting.
The beneficial effects of the present invention are: being infused using the band mould slurry injection technique of this method and microdilatancy, high-flowing concrete
Slurry, bonding force is strong, has to the section gap that concreting is formed and repairs, comprehensive performance is better than the property of lining concrete
Energy;And the risk for reducing tunnel lining concrete cracking, coming to nothing and falling off, it improves tunnel-liner and geologic risk is immunized
Power, the risk of disaster occurs for tunnel-liner when reducing operation, can be primary full, and the later period no longer spends more be constructed into
This;Pass through the application of this method, it is ensured that tunnel-liner quality.
Detailed description of the invention
The invention will be further described with embodiment with reference to the accompanying drawing.
Fig. 1 is lining trolley structural schematic diagram;
Fig. 2 is the skiagraph (i.e. A-A cross-sectional view) in Fig. 1;
Fig. 3 is B in Fig. 1 to enlarged drawing (connector scheme of installation);
Specific embodiment
In Fig. 1, Fig. 2, Fig. 3 embodiment that the present invention provides, it is welded into lining trolley frame with channel steel, metal plate, it is very heavy
15 difference of top, vault template 11, left side arch wall template 14, the combination of right side arch wall template 13 are mounted on lining trolley frame, vehicle frame
The idler wheel of bottom end installation is located in tunnel on the track of ground surface platform, forms lining construction lining trolley a.By lining cutting platform
Vehicle a is mounted on be secured in position in the tunnel of excavation after, slip casting all-in-one machine 8 processed is placed on the ground of the bottom lining trolley a, convey it is soft
The both ends of pipe b are connected on reduction nipple 619 and slip casting all-in-one machine pulp nozzle processed.
It is longitudinal in vault template 11() it is equidistantly identical equipped with identical 3 filling concrete holes 5 and 4 structure of structure
4 circular holes;First filling concrete hole 51, the second filling concrete hole 52, third filling concrete hole 53;Tunnel-liner vault
Peephole 121 is equipped with above the template 12 of one end;4 circular holes are equipped at 11 top (longitudinal direction) of vault template of lining trolley a
Aperture is 40mm;
Identical 4 circular holes of the structure are as follows: the first circular hole 61, the second circular hole 62, third circular hole 63, the 4th circular hole 64
Or peep hole;First circular hole 61 is located at the closed end of two lining concrete;4th circular hole 64 is located at the opening of two lining concrete
End;4th circular hole, 64 circular hole is apart from end mould 0.6-1.5m;The first filling concrete hole 51 and the second filling concrete hole 52 it
Between be equipped with the second circular hole 62;Third circular hole 63 is equipped between second filling concrete hole 52 and third filling concrete hole 53.It will
Flange 612 is fixed on the first circular hole 61, the second circular hole 62, third circular hole 63 and the 4th circular hole 64;In lining trolley a mono-
The top peephole 121 of Side Template 12, peephole is for observing concrete perfusion slip casting situation.
It is wherein main injected hole close to construct first circular hole 61 at end of vault template 11, with flange 612 by the first Grouting Pipe
611 are fixed in the first circular hole 61;First circular hole 61 is main the second circular hole of injected hole 62, third circular hole 63, the 4th circular hole
64 are used as peep hole or spare injected hole.
It is solid by installation in time when two lining concrete constructions close to an end, and before two lining concrete blindings are not removed
It is scheduled on the first Grouting Pipe 611 in the first circular hole, concrete is carried out to hole, interlayer and the position of coming to nothing on two lining concrete vaults
Slip casting, while slip casting turgor is observed by the second circular hole 62, third circular hole 63, the 4th circular hole 64.
First Grouting Pipe: the first coagulation Grouting Pipe 611 being inserted into the flange 612 at 11 top of vault template,
Make top set reeded first Grouting Pipe 611 tube head withstand splash guard 4 after, 11 outer of vault template the first coagulation infuse
Starch on pipe 611 label first with outside vault template 11 along, for detecting whether lining thickness meets the requirements;Article 2 line is
11 outers of vault template+locating sleeve, 614 length 4.3cm+2cm, the i.e. cutting length of the first Grouting Pipe 611.
The Combined pipe adapter: 616 upper end of ball valve is mounted under the first pipe fitting 611 by connecting tube 615
The upper end of end, the first pipe fitting 611 is set as groove type cross piece;Second pipe fitting, 617 upper end is mounted on ball valve 616
On the tube head of lower end, pressure gauge C is mounted on the second pipe fitting 617, and reduction nipple 619 is mounted on 617 lower end of the second pipe fitting
Head forms combined type conveying tube joint.
Tunnel vault band mould grouting construction method of the invention, steps are as follows for grouting construction method:
Step 1: lining trolley a being mounted on after being secured in position on the track of ground surface platform in the tunnel of excavation, and system is infused
Slurry all-in-one machine 8 is placed in the ground surface platform of the bottom lining trolley a, and the both ends of delivery pipe b are connected to reduction nipple 619 and system
Slip casting all-in-one machine 8 discharges on nozzle;
Step 2: ready first Grouting Pipe or exhaust pipe are measured by carrying out " trying on " at preformed hole at the top of trolley
It surveys;First line of label in the first Grouting Pipe 611 of 11 outer of vault template, for detecting whether lining thickness conforms to
It asks;Draw Article 2 graticule from 11 outers of vault template+614 length of locating sleeve (4.3cm)+2cm, i.e. the first Grouting Pipe 611
Cutting length;
Step 3: fixed Grouting Pipe is installed: the first Grouting Pipe of well cutting is penetrated to the first circular hole in vault template 11
Afterwards, first Grouting Pipe 611 is fixed in the first circular hole 61 in vault template 11 with flange 612;
Step 4: observation judges vault template inner concrete slip casting or situation of rushing to summit, and successively sees according to the sequence of fill orifice
The pulp situation in concrete grouting hole (peep hole), the concrete grouting checked in vault template or situation of rushing to summit are examined, judges to encircle
Whether concrete grout is filled in top template;
Step 5: it prepares dedicated filling mortar: using dedicated slurrying slip casting all-in-one machine 8, prepare dedicated filling mortar and make
For concrete grouting material, dedicated filling mortar is as grout material (in the ratio of water to material of configuration: water: filling mortar=18:100(weight
Than), separately add 0.08% micro-expanding agent;Cement preferably uses portland cement;Injecting paste material requires continuous mixing, tight during mixing
Lattice monitor every material utilization amount, it is ensured that grouting quality;
Step 6: starting slip casting all-in-one machine slip casting processed starts slip casting one slip casting machine 8 processed, successively observe the second circular hole 62,
Third circular hole 63 and the 4th circular hole 64(are used as gas vent simultaneously) infused concrete grouting whether is flowed out, when other peep holes flow out
When concrete grouting reaches the concrete mortar of equal densities, it is immediately finished note concrete grout, which is closed.Work as pressure
Power table 617 reaches 1.0MPa, and concrete grouting is not flowed out in aperture yet, should replace next injected hole and carry out slip casting, until in
Between peephole 121 on 12 end of the second circular hole 62, third circular hole 63 and the 4th circular hole 64 and template flow out concrete grout 3-5s
When stop slip casting;
Step 7: slip casting terminates, from the 619 tail end nozzle of pulp nozzle and reduction nipple of slip casting all-in-one machine slip casting 8 processed
On unload concrete grouting delivery hose b, block slip casting pore, after concrete slurry initial set, lay down locating flange 613, turn
To next hole slip casting.
Claims (1)
1. tunnel vault band mould grouting construction method, it is characterized in that: its method and step is as follows:
Step 1: assembling lining trolley is mounted on after being secured in position on the track of tunnel ground, slip casting all-in-one machine processed is placed on
In the ground surface platform of lining trolley bottom, the both ends of delivery hose are connected to reduction nipple and slip casting all-in-one machine discharge nozzle processed
On mouth;
Step 2: determining Grouting Pipe cutting length, and ready first Grouting Pipe or exhaust pipe are passed through preformed hole at the top of trolley
Place carries out " trying on " and measures;First line of label in the first Grouting Pipe of vault template outer be for detecting lining thickness
It is no to meet the requirements;Under vault template outer+locating sleeve length 4.3cm+2cm strokes of Article 2 graticules, i.e. the first Grouting Pipe
Expect length;
Step 3: fixed Grouting Pipe is installed: after the first Grouting Pipe of well cutting is penetrated the first circular hole in vault template, usage
First Grouting Pipe is fixed in the first circular hole in vault template by orchid;
Step 4: observation judges vault template inner concrete slip casting or situation of rushing to summit: mixed according to the sequential observation of fill orifice
The pulp situation of solidifying soil injected hole or peep hole, the concrete grouting checked in vault template or situation of rushing to summit, judge vault mould
Whether concrete grout is filled in plate;
Step 5: it prepares dedicated filling mortar: using dedicated slurrying slip casting all-in-one machine, prepare dedicated filling mortar as coagulation
Native grout material, the concrete grouting material weight ratio of configuration are as follows: water: filling mortar=18:100 separately adds 0.08% micro-expanding agent;Cement
Preferably use portland cement;Concrete grouting material requires continuous mixing, the stringent every material utilization amount of monitoring during mixing, it is ensured that
Grouting quality;
Step 6: slip casting: starting slip casting all-in-one machine processed successively observes the second circular hole, third circular hole and the 4th circular hole, while arranging
Stomata, for whether flowing out infused concrete grouting, when other peep holes outflow concrete grouting reaches the coagulation of equal densities
When soil paste body, it is immediately finished note concrete grout, which is closed;When pressure gauge reaches 1.0MPa, aperture is not flowed out yet
Concrete grouting should replace next injected hole and carry out concrete grouting again, until intermediate second circular hole, third circular hole and the 4th
Peephole on circular hole and form stop stops slip casting when flowing out concrete grout 3-5s;
Step 7: slip casting terminates, and unloads concrete from the pulp nozzle and reduction nipple tail end nozzle of slip casting all-in-one machine processed
Slip casting delivery hose blocks slip casting pore, after concrete grouting initial set, lays down locating flange, goes to next hole slip casting.
Priority Applications (1)
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CN201610706453.5A CN107762532B (en) | 2016-08-23 | 2016-08-23 | Tunnel vault band mould grouting construction method |
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CN201610706453.5A CN107762532B (en) | 2016-08-23 | 2016-08-23 | Tunnel vault band mould grouting construction method |
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CN107762532A CN107762532A (en) | 2018-03-06 |
CN107762532B true CN107762532B (en) | 2019-03-01 |
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CN113898381B (en) * | 2021-10-09 | 2024-05-24 | 中铁二十三局集团第四工程有限公司 | Grouting method for prestressed lining |
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CN114278339A (en) * | 2021-12-06 | 2022-04-05 | 中铁十局集团第三建设有限公司 | Tunnel strip mold grouting construction method and application |
CN114033437B (en) * | 2022-01-11 | 2022-03-25 | 中铁五局集团第一工程有限责任公司 | Loess stratum formwork lining support trolley and support method thereof |
CN114738000A (en) * | 2022-04-23 | 2022-07-12 | 石家庄铁源工程咨询有限公司 | Pouring construction method for secondary lining concrete of railway tunnel arch wall |
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