CN107762534A - A kind of complete opening once quick grouting construction method - Google Patents
A kind of complete opening once quick grouting construction method Download PDFInfo
- Publication number
- CN107762534A CN107762534A CN201710973943.6A CN201710973943A CN107762534A CN 107762534 A CN107762534 A CN 107762534A CN 201710973943 A CN201710973943 A CN 201710973943A CN 107762534 A CN107762534 A CN 107762534A
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- China
- Prior art keywords
- grouting
- hole
- pipe
- slip casting
- complete opening
- Prior art date
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 238000007569 slipcasting Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims description 39
- 230000009977 dual effect Effects 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000005641 tunneling Effects 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 210000002435 tendon Anatomy 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 230000010339 dilation Effects 0.000 claims description 4
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 3
- 230000004069 differentiation Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of complete opening once quick grouting construction method, including cloth hole, make the process such as Grouting Pipe dispensing and slip casting, complete opening once grouting is realized, suitable for backfill, muck soil, riprap layer, layer of sand, the complete, quality such as differentiation layer, and slip casting effect is good by force.
Description
Technical field
The present invention relates to a kind of complete opening once quick grouting construction method.
Background technology
Slurry injection technique is widely used in China constructing tunnel field, be particularly applied to Weathered Trough, crushed zone,
Plenty water weak surrounding rock grouting for water blocking, strengthening stratum；Type has tunneling boring, half section, periphery and local curtain-grouting, single hole note
Slurry etc.；For main grouting mode based on protrusive, retrusive, wall for grouting uses form concrete, more than thickness 2m；Cloth well format
With tunneling boring, upper half section note tunneling boring, periphery or local curtain-grouting cloth hole, the whole slip casting cycle is longer, slip casting effect
Have some limitations, how to realize complete opening once quick slip casting so that slurries can uniformly be diffused into the every of injected hole
Individual section, it is ensured that complete opening slip casting effect, be worth our further further investigations and experiment.
Traditional slurry injection technique, mainly based on dual slurry, using protrusive, retrusive grouting mode, each injected hole
Leading portion installs Φ 127 × 5mm sleeve pipes, length 5m；Casing section uses Φ 94mm using Φ 130mm drill bits pore-forming, follow-up slip casting section
Drill bit pore-forming；Grouting pressure is based on middle pressure, and typically using 2.5~4.0 times of hydrostatic pressures, grouting sequence is from outside to inside.
Either protrusive, retrusive, slurries can not uniformly spread, and cloth hole number is more, and wall for grouting uses mould
Concrete is built, thickness is big, should not operate, and the whole slip casting cycle, time-consuming, and the sealing of wall for grouting is poor, and the later stage is not easy to cut, slurry
Liquid setting time, adjustable scope was small, and slip casting effect has some limitations, and surface uplift value is larger during slip casting.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide a kind of complete opening once quick grouting construction method,
Suitable for backfill, muck soil, riprap layer, layer of sand, the complete, quality such as differentiation layer, and slip casting effect is good by force.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of complete opening once quick grouting construction method, comprises the following steps：
A, cloth hole
Excavated section, using upper half section note tunneling boring slurry, beat injected hole several, slip casting hole length 20m, excavation 15m,
Reserved 5m presses 3m fixing collar, dilation angle 1m outside as sealing batholite, excavation contour line；
Wherein punch according to " inner ring, gets on, get off behind first outer ring, symmetrical, is constructed with hole is jumped between sequence ", subtract as far as possible
Few disturbance to stratum；
Wall for grouting uses 80cm thickness C25 in-network processings, if compound steel muscle net, and set thick tendons skeleton more than Φ 22mm with
Bow member firm welding；
B, Grouting Pipe is made
The pvc pipe being fixedly connected by more piece by straight joint forms the main body of Grouting Pipe, is provided with each pvc pipe
Device to hole, each device to hole are wrapped up with rubber strip, and tapered the first sharp wire leading pipe of Grouting Pipe one end connection contracting point, the other end stays
Screw thread is used to be connected with slip casting pump line；
The long 4m of pvc pipe is wherein often saved, totally 5 section, one group of device to hole is set per spacing 1m；
C, dispensing
75% common dual slurry (1:1:1, waterglass 38Be ' initial set 40~50s, final set 5min), 25% superfine cement slurry
Liquid；
D, slip casting
In each injected hole that first wire leading pipe one end quick insertion of each Grouting Pipe one end is accomplished fluently, aperture uses Anchor Agent
Anchoring closure, Grouting Pipe other end screwed connection slip casting pump line start slip casting, and slurries break through rubber strip, are overflowed from injected hole,
Realize complete opening once grouting；
Wherein：Once drill at a slow speed 20m, quick insertion Grouting Pipe；Lower half section grouting pressure control 2.5Mpa with
Interior, the grouting pressure of upper half section is controlled within 1.2Mpa, and grouting pressure of the arch close to pipeline region is controlled in 0.8Mpa
Within；
Single hole slip casting ending standard：Grouting amount, grouting pressure dual control, porosity control is 10%, per linear meter(lin.m.) about 0.3m3Slurry
Liquid, the porosity of total slurry amount ≯ 15%.
Further, a diameter of 75mm of the injected hole, a diameter of 25mm of the Grouting Pipe, the aperture of device to hole is
8mm, first wire leading pipe is by the tapered point of 20mm wire leading pipes contracting point.
Further, hot weather biliquid can effectively be controlled by a certain amount of disodium hydrogen phosphate being mixed in the blending process
The setting time of slurry.
Further, the average injected hole set per square meter is 4 on the section upper half section.
Compared with prior art, advantageous effects of the invention：
1st, once punch, PVC Grouting Pipe total length perforates (pitch of holes 1m), within 40s~50s setting times, slurries can
Uniformly spread out, 2h completes an injected hole, realizes quick slip casting；
2nd, compound steel muscle net, 80cm thickness C25 in-network processings, and set thick tendons skeleton more than Φ 22mm and bow member welding jail
Gu wall for grouting thickness is effectively reduced, no spillage phenomenon；
3rd, dual slurry setting time is effectively controlled, slurries just can uniformly be spread out, and avoid slurries from concentrating
Effect, reduces surface uplift value (within 10cm), and protuberance presents harmonious；
4th, by grouting test, the disposable slurry injection technique of this complete opening disclosure satisfy that a variety of stratum (are applied to backfill, mud
Matter soil, riprap layer, layer of sand, it is complete, break up layer by force), and slip casting effect is more satisfactory.
Brief description of the drawings
The invention will be further described for explanation below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of Grouting Pipe；
Fig. 2 is enlarged drawing at A；
Fig. 3 is sectional view at B；
Description of reference numerals：1-PVC is managed；2- straight joints；3- device to hole；4- adhesive tapes；The wire leading pipes of 5- first；6- screw threads；7- valves
Door.
Embodiment
As shown in figure 1, a kind of complete opening once quick grouting construction method, comprises the following steps：
A, cloth hole
Excavated section, using upper half section note tunneling boring slurry, beat injected hole several, slip casting hole length 20m, excavation 15m,
Reserved 5m presses 3m fixing collar, dilation angle 1m outside as sealing batholite, excavation contour line；
Wherein punch according to " inner ring, gets on, get off behind first outer ring, symmetrical, is constructed with hole is jumped between sequence ", subtract as far as possible
Few disturbance to stratum；
Wall for grouting uses 80cm thickness C25 in-network processings, if compound steel muscle net, and set thick tendons skeleton more than Φ 22mm with
Bow member firm welding；
B, Grouting Pipe is made
The pvc pipe 1 being fixedly connected by more piece by straight joint 2 forms the main body of Grouting Pipe, is respectively provided with each pvc pipe
There is device to hole, each device to hole is wrapped up with rubber strip, tapered the first sharp wire leading pipe 5 of Grouting Pipe one end connection contracting point, another
Screw thread 6 is stayed to be used to be connected with slip casting pump line in end；Valve 7 is additionally provided with Grouting Pipe；
The long 4m of pvc pipe is wherein often saved, totally 5 section, one group of device to hole is set per spacing 1m；
C, dispensing
75% common dual slurry (1:1:1, waterglass 38Be ' initial set 40~50s, final set 5min), 25% superfine cement slurry
Liquid；
D, slip casting
In each injected hole that first wire leading pipe one end quick insertion of each Grouting Pipe one end is accomplished fluently, aperture uses Anchor Agent
Anchoring closure, Grouting Pipe other end screwed connection slip casting pump line start slip casting, and slurries break through rubber strip, are overflowed from injected hole,
Realize complete opening once grouting；
Wherein：Once drill at a slow speed 20m, quick insertion Grouting Pipe；Lower half section grouting pressure control 2.5Mpa with
Interior, the grouting pressure of upper half section is controlled within 1.2Mpa, and grouting pressure of the arch close to pipeline region is controlled in 0.8Mpa
Within；
Single hole slip casting ending standard：Grouting amount, grouting pressure dual control, porosity control is 10%, per linear meter(lin.m.) about 0.3m3Slurry
Liquid, the porosity of total slurry amount ≯ 15%.
Wherein, a diameter of 75mm of the injected hole, a diameter of 25mm of the Grouting Pipe, the aperture of device to hole are 8mm, institute
The first wire leading pipe is stated by the tapered point of 20mm wire leading pipes contracting point.
Wherein, hot weather dual slurry can effectively be controlled by a certain amount of disodium hydrogen phosphate being mixed in the blending process
Setting time.
Wherein, the average injected hole set per square meter is 4 on the section upper half section.
Embodiment 1
Carried out using wearing major urban arterial highway super shallow-buried tunnel Curtain Grouting Construction under the conditions of the plenty water weak surrounding rock that borders on the sea as support
Research and development；
Urban transportation thoroughfare is worn under certain tunnel, close to viaduct pier, earth's surface vehicle flowrate is larger, pipeline is intensive, totally 6 class 20
Remaining bar, there are some unknown pipelines；
It is shallower (5.4~14.3m) that section buried depth is worn under this, vault scope stratum is mainly miscellaneous fill, mud, residual soil, complete
Strong weathered granite, and penetrated with seawater, self-stable ability is poor, day maximum flooding quantity 1700m3, whole tunnel be located at ordinary water level with
Under；
Whole grouting process is as follows：
1. cloth hole：The ㎡ of excavated section 58.99, using upper half section note tunneling boring slurry, wherein injected hole 120, upper part
37, center section 53, lower part 30, slip casting length 20m, 15m is excavated, reserve 5m sealing batholites, outside excavation contour line
By 3m fixing collar, dilation angle 1m；
2. work：The people of rig hand 3, the people of Cementer 6, totally 9 people, 8 hours one class, uninterrupted operation；
3. expect：75% common dual slurry (1:1:1, waterglass 38Be ' initial set 40~50s, final set 5min), 25% ultra-fine water
Slurry liquid；The setting time of hot weather dual slurry can effectively be controlled by mixing a certain amount of disodium hydrogen phosphate；
4. machine：A kind of small-sized multifunctional drill, double-fluid grouting machine, high shear agitation machine, full-automatic grouting automatic recorder；
5. slip casting process：Once drill at a slow speed 20m, quick insertion Grouting Pipe, aperture anchoring closure, complete opening once grouting；
6. punching according to " inner ring, gets on, get off behind first outer ring, symmetrical, is constructed with hole is jumped between sequence ", reduce as far as possible
Disturbance to stratum；
7. wall for grouting uses 80cm thickness C25 in-network processings, if compound steel muscle net, and set Φ more than 22 thick tendons skeleton with
Bow member firm welding；
8. setting Φ 75mm drillings, Φ 25mm self-control PVC Grouting Pipes are sent into, spacing 1m opens a pair of device to hole (aperture 8mm), adopted
Wrapped up with rubber strip+plastic adhesive tape, Grouting Pipe front end is existed using the tapered point of 20mm wire leading pipes contracting point with Grouting Pipe screwed connection
Together, end is reserved screw thread and is connected with slip casting pump line；
9. grouting pressure, lower half control of section is within 2.5Mpa, and for upper half control of section within 1.2Mpa, arch is close
Pipeline Region control is within 0.8Mpa；
10. single hole slip casting ending standard：Grouting amount, grouting pressure dual control, porosity control is 10%, per linear meter(lin.m.) about 0.3m3
Slurries, the porosity of total slurry amount ≯ 15%.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is carried out
Limit, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art make to technical scheme
Various modifications and improvement, all should fall into claims of the present invention determination protection domain in.
Claims (4)
1. a kind of complete opening once quick grouting construction method, it is characterised in that comprise the following steps：
A, cloth hole
Excavated section, using upper half section note tunneling boring slurry, beat injected hole several, slip casting hole length 20m, excavate 15m, it is reserved
5m presses 3m fixing collar, dilation angle 1m outside as sealing batholite, excavation contour line；
Wherein punch according to " inner ring, gets on, get off behind first outer ring, symmetrical, is constructed with hole is jumped between sequence ", as far as possible reduction pair
The disturbance on stratum；
Wall for grouting uses 80cm thickness C25 in-network processings, if compound steel muscle net, and set more than Φ 22mm thick tendons skeleton and bow member
Firm welding；
B, Grouting Pipe is made
The pvc pipe being fixedly connected by more piece by straight joint forms the main body of Grouting Pipe, is provided with each pvc pipe pair
Hole, each device to hole are wrapped up with rubber strip, and tapered the first sharp wire leading pipe of Grouting Pipe one end connection contracting point, the other end stays silk
Detain for being connected with slip casting pump line；
The long 4m of pvc pipe is wherein often saved, totally 5 section, one group of device to hole is set per spacing 1m；
C, dispensing
75% common dual slurry (1:1:1, waterglass 38Be ' initial set 40~50s, final set 5min), 25% superfine cement slurries；
D, slip casting
In each injected hole that one end quick insertion of first wire leading pipe of each Grouting Pipe one end is accomplished fluently, aperture uses Anchor Agent anchor
Sealing is blocked up, and Grouting Pipe other end screwed connection slip casting pump line starts slip casting, and slurries break through rubber strip, are overflowed from injected hole, real
Existing complete opening once grouting；
Wherein：Once drill at a slow speed 20m, quick insertion Grouting Pipe；The grouting pressure of lower half section is controlled within 2.5Mpa, on
The grouting pressure of half section is controlled within 1.2Mpa, and grouting pressure of the arch close to pipeline region is controlled within 0.8Mpa；
Single hole slip casting ending standard：Grouting amount, grouting pressure dual control, porosity control is 10%, per linear meter(lin.m.) about 0.3m3Slurries, always
The porosity of slurry amount ≯ 15%.
2. complete opening according to claim 1 once quick grouting construction method, it is characterised in that：The diameter of the injected hole
For 75mm, a diameter of 25mm of the Grouting Pipe, the aperture of device to hole is 8mm, and first wire leading pipe is contracted sharp by 20mm wire leading pipes
Tapered point.
3. complete opening according to claim 1 once quick grouting construction method, it is characterised in that：Mixed in the blending process
The setting time of hot weather dual slurry can effectively be controlled by entering a certain amount of disodium hydrogen phosphate.
4. complete opening according to claim 1 once quick grouting construction method, it is characterised in that：The section upper half section
The upper average injected hole set per square meter is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973943.6A CN107762534B (en) | 2017-10-19 | 2017-10-19 | Full-hole one-time rapid grouting construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973943.6A CN107762534B (en) | 2017-10-19 | 2017-10-19 | Full-hole one-time rapid grouting construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107762534A true CN107762534A (en) | 2018-03-06 |
| CN107762534B CN107762534B (en) | 2020-08-11 |
Family
ID=61268876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710973943.6A Active CN107762534B (en) | 2017-10-19 | 2017-10-19 | Full-hole one-time rapid grouting construction method |
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| Country | Link |
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| CN (1) | CN107762534B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505633A (en) * | 2019-01-15 | 2019-03-22 | 北京市市政工程研究院 | Lining cutting behind guide pipe grouting for water blocking device and construction method for shaly formation |
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|---|---|---|---|---|
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| CN101832142A (en) * | 2010-02-11 | 2010-09-15 | 中铁十二局集团有限公司 | Tunnel information tracing accurate grouting method |
| CN102128038A (en) * | 2011-01-26 | 2011-07-20 | 北京中铁瑞威基础工程有限公司 | Quick construction method for tunnel pipe shed |
| CN106638644A (en) * | 2016-12-29 | 2017-05-10 | 中国葛洲坝集团基础工程有限公司 | Deep sand-gravel stratum grouting device and method for carrying out comprehensive grouting by using same |
-
2017
- 2017-10-19 CN CN201710973943.6A patent/CN107762534B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4041665A (en) * | 1975-11-22 | 1977-08-16 | Vredestein N.V. | Injection sealable waterstop and method of installing same |
| CN101832142A (en) * | 2010-02-11 | 2010-09-15 | 中铁十二局集团有限公司 | Tunnel information tracing accurate grouting method |
| CN102128038A (en) * | 2011-01-26 | 2011-07-20 | 北京中铁瑞威基础工程有限公司 | Quick construction method for tunnel pipe shed |
| CN106638644A (en) * | 2016-12-29 | 2017-05-10 | 中国葛洲坝集团基础工程有限公司 | Deep sand-gravel stratum grouting device and method for carrying out comprehensive grouting by using same |
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| Title |
|---|
| 刘召臣: "水平袖阀管深孔注浆在地铁穿越风险源中的应用", 《山西建筑》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505633A (en) * | 2019-01-15 | 2019-03-22 | 北京市市政工程研究院 | Lining cutting behind guide pipe grouting for water blocking device and construction method for shaly formation |
| CN109505633B (en) * | 2019-01-15 | 2024-03-29 | 北京市市政工程研究院 | Lining back guide pipe grouting water plugging device for muddy stratum and construction method |
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| Publication number | Publication date |
|---|---|
| CN107762534B (en) | 2020-08-11 |
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