CN107939420A - The construction method filled after two backing of bored tunnel assembled - Google Patents
The construction method filled after two backing of bored tunnel assembled Download PDFInfo
- Publication number
- CN107939420A CN107939420A CN201710720494.4A CN201710720494A CN107939420A CN 107939420 A CN107939420 A CN 107939420A CN 201710720494 A CN201710720494 A CN 201710720494A CN 107939420 A CN107939420 A CN 107939420A
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- Prior art keywords
- beans gravel
- section
- grouting
- assembled
- behind
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims abstract description 40
- 244000046052 Phaseolus vulgaris Species 0.000 claims abstract description 40
- 238000007569 slipcasting Methods 0.000 claims abstract description 12
- 239000011083 cement mortar Substances 0.000 claims abstract description 5
- 210000004712 air sac Anatomy 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000011440 grout Substances 0.000 claims description 3
- 239000008267 milk Substances 0.000 claims description 3
- 210000004080 milk Anatomy 0.000 claims description 3
- 235000013336 milk Nutrition 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 210000004911 serous fluid Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004575 stone 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
- E21D11/08—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
- E21D11/38—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
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The construction method filled after two backing of bored tunnel assembled belongs to railway traffic engineering technical field of construction.It is characterized in that：After the assembly for completing each endless tube piece, carry out hydraulic reclamation beans gravel to the gap between prefabricated pipe section behind and branch structure at the beginning of main track and construct；The order of hydraulic reclamation beans gravel for from the bottom to top, it is symmetrical；Install bellows seal additional in pipe ring termination, Dong Bishang is withstood on after air sac sealing inflation, when equipment moves forward, air bag deflation, mounting base drives air bag reach；It is using cement mortar that the beans gravel gap filling of ring prefabricated pipe section filling behind is full after 20 rings are completed in assembly, closed-loop is formed, longitudinally every hole slip casting during grouting, per one hole of five rings note；Every 20 ring carries out once circumferential closure, and circumferential direction closure uses chemical grouting.The present invention can control ground settlement, strengthen the waterproof ability in assembled tunnel, prevent duct piece float upward and sidesway, and low easy to construction, safe, short time limit, cost.
Description
Technical field
The invention belongs to railway traffic engineering technical field of construction, is adopted more particularly to one kind applied to Bored Section of Metro
With the tunnel of the lining construction of assembled two, the construction party being filled to gap of the prefabricated pipe section behind between branch structure at the beginning of main track
Method.
Background technology
Available data shows that bored tunnel fabricated construction has been implemented and applied in Japan and the Soviet Union.It is domestic at present right
Shield-bored tunnels fabricated construction studies comparative maturity, but to the research that bored tunnel assembled two serves as a contrast also in a step
Section.Domestic tunnel machine is mainly reflected in shield and TBM (being suitable for lithostratigraphy) tunnel construction technology, its outstanding feature
To use prefabricated pipe section component as two lining structures, so as to improve construction efficiency with reducing project cost.
Bored tunnel assembled two serves as a contrast and gap is left between prefabricated pipe section and just lining, is timely carried out behind after the completion of assembled
Filling is a highly important process, its construction effect mainly has following three aspects：
1st, gap is filled in time, is supported section of jurisdiction surrounding rock body, is efficiently controlled ground settlement.
2nd, first waterproof barrier of the slurries condensed as construction tunnel, strengthens the waterproof ability in assembled tunnel.
3rd, stablizing and making section of jurisdiction integrated with first branch for early stage is provided for section of jurisdiction, prevents duct piece float upward and sidesway, and can be really
The final of assembled tunnel is protected to stablize.
The content of the invention
Difficulty of construction is reduced at the same time in order to reach the effect above, and it is an object of the invention to provide a kind of Bored Section of Metro
The construction method filled after two backing of main track assembled.
In order to achieve the above object, the construction filled after two backing of Bored Section of Metro main track assembled provided by the invention
Method includes the following steps carried out in order：
1) after the assembly for completing each endless tube piece, using the beans gravel pack system (3) in pipe sheet assembling equipment by pre-
The radial grouting hole (5) of tubulation on piece to prefabricated pipe section (1) behind with main track at the beginning of gap between branch structure (2) carry out hydraulic reclamation beans
Gravel is constructed；Beans gravel is transported to beans gravel pump (10) through belt feeder (11), is filled by compressed air to section of jurisdiction behind, hydraulic reclamation beans
The order of gravel for from the bottom to top, it is symmetrical.
2) to prevent that beans gravel overflows when synchronously noting beans gravel, in pipe ring termination installation bellows seal, air sac sealing
Dong Bishang is withstood on after inflation, when pipe sheet assembling equipment moves forward, air bag deflation, mounting base drives air bag reach.
3) after 20 rings of assembled completion, filling system (4) injects water behind by radial grouting hole (5) to prefabricated pipe section (1)
Mud, it is using cement mortar that the beans gravel gap filling of ring prefabricated pipe section filling behind is full, form closed-loop, grouting sequence
For from the bottom to top, it is symmetrical, longitudinally every hole slip casting, (per one hole of tricyclic note, the backfill of vault block beans gravel is difficult, slurries during grouting
Mobility is larger, per one hole of five rings note).When pore pressure force of being in the milk reaches 0.2MPa~0.3MPa, grout hole stopping slip casting, and after
Continuous perfusion 5min can terminate.
4) since grouting serous fluid pressure is larger, to prevent that slurries are excessive by section of jurisdiction front end, close measure, every 20 ring need to be increased
Carry out once circumferential closure (just branch and section of jurisdiction radial clearance)；Since common grouting material grouting setting time is difficult to control, expand
It is big to dissipate scope, it is difficult to quick closure is formed, and chemical grouting material has setting time controllable small with range of scatter, can quickly seal
The advantages of closing, so using chemical grouting.
The beans gravel pack system mainly by beans gravel pack pot (9), beans gravel belt feeder (11), beans gravel pump (10) and
The part such as air compressor machine (8) forms.
The filling system is mainly made of grouting pump (12), agitator tank (14).Drive is separately configured in slip casting trolley (13)
Dynamic portion (15), can automatic moving as needed.
The close measure uses chemical grouting.
Highly it is not less than 100mm during the airbag aeration, unaerated is highly 60mm.
The construction method filled after two backing of Bored Section of Metro main track assembled provided by the invention can fill in time
Gap between section of jurisdiction and just lining, supports section of jurisdiction surrounding rock body, efficiently controls ground settlement；Simultaneously coagulated slurries are used as and apply
First of waterproof barrier in work tunnel, strengthens the waterproof ability in assembled tunnel；For section of jurisdiction provide early stage stablize and make section of jurisdiction with
First branch integration, prevents duct piece float upward and sidesway, it is ensured that the final of assembled tunnel is stablized；And easy to construction, security it is higher,
Short time limit, construction cost are low.
Brief description of the drawings
Fig. 1 serves as a contrast horizontal sectional schematic diagram for metro built by mining method assembled two.
Fig. 2 is beans gravel pack system schematic.
Fig. 3 is filling system schematic diagram.
Fig. 4 is prefabricated pipe section side portion structure diagram.
Fig. 5, Fig. 6 are beans gravel pipe ring faces end head plugging measure schematic diagram.
The meaning of digital representation in figure：1st, prefabricated pipe section；2nd, the first branch structure of main track；3rd, beans gravel pack system；4th, slip casting
System；5th, injected hole；6th, inflated condition air bag；7th, deflation status air bag；8th, air compressor machine；9th, beans gravel pack pot；10th, beans gravel pump；
11st, chad stone belt feeder；12nd, grouting pump；13rd, slip casting trolley；14th, agitator tank；15th, driving unit；16th, mounting base
Embodiment
Below in conjunction with the accompanying drawings with specific embodiment to two backing of Bored Section of Metro main track assembled provided by the invention after
The construction method of filling is described in detail.The component identical with prior art uses identical label, and omits and it is carried out
Explanation.
Now illustrated by taking certain Bored Section of Metro engineering as an example：As shown in Figure 1, two lining structure of section breaks for the shape of a hoof
Face, assembled by the first to the 6th prefabricated pipe section, there are gap between prefabricated pipe section and the first branch structure of main track need to carry out behind
Filling.
As shown in Figs. 1-5, the work side applied is filled after two backing of Bored Section of Metro main track assembled provided in this embodiment
Method includes the following steps carried out in order：
1) after the assembly for completing each endless tube piece, using the beans gravel pack system (3) in pipe sheet assembling equipment by pre-
The radial grouting hole (5) of tubulation on piece to prefabricated pipe section (1) behind with main track at the beginning of gap between branch structure (2) carry out hydraulic reclamation beans
Gravel is constructed；Beans gravel is transported to beans gravel pump (10) through belt feeder (11), is filled by compressed air to section of jurisdiction behind, hydraulic reclamation beans
The order of gravel for from the bottom to top, it is symmetrical.
2) to prevent that beans gravel overflows when synchronously noting beans gravel, in pipe ring termination installation bellows seal, air sac sealing
Dong Bishang is withstood on after inflation, when pipe sheet assembling equipment moves forward, air bag deflation, mounting base drives air bag reach.
3) after 20 rings of assembled completion, filling system (4) injects water behind by radial grouting hole (5) to prefabricated pipe section (1)
Mud, it is using cement mortar that the beans gravel gap filling of ring prefabricated pipe section filling behind is full, form closed-loop, grouting sequence
For from the bottom to top, it is symmetrical, longitudinally every hole slip casting, (per one hole of tricyclic note, the backfill of vault block beans gravel is difficult, slurries during grouting
Mobility is larger, per one hole of five rings note).When pore pressure force of being in the milk reaches 0.2MPa~0.3MPa, grout hole stopping slip casting, and after
Continuous perfusion 5min can terminate.
4) since grouting serous fluid pressure is larger, to prevent that slurries are excessive by section of jurisdiction front end, close measure, every 20 ring need to be increased
Carry out once circumferential closure (just branch and section of jurisdiction radial clearance)；Since common grouting material grouting setting time is difficult to control, expand
It is big to dissipate scope, it is difficult to quick closure is formed, and chemical grouting material has setting time controllable small with range of scatter, can quickly seal
The advantages of closing, so using chemical grouting.
5) the assembled progress according to section of jurisdiction, slip casting of following up in time, completes whole work progress.
Claims (3)
1. the construction method filled after a kind of two backing of Bored Section of Metro main track assembled, it is characterised in that including following step
Suddenly：
1) after the assembly for completing each endless tube piece, prefabricated pipe is passed through using the beans gravel pack system (3) in pipe sheet assembling equipment
The radial grouting hole (5) of on piece to prefabricated pipe section (1) behind with main track at the beginning of gap between branch structure (2) carry out hydraulic reclamation beans gravel
Construction；Beans gravel is transported to beans gravel pump (10) through belt feeder (11), is filled by compressed air to section of jurisdiction behind, hydraulic reclamation beans gravel
Order for from the bottom to top, it is symmetrical；
2) install bellows seal additional in pipe ring termination, Dong Bishang, when pipe sheet assembling equipment moves forward, gas are withstood on after air sac sealing inflation
Capsule is deflated, and mounting base drives air bag reach；
3) after 20 rings of assembled completion, filling system (4) injects cement mortar behind by radial grouting hole (5) to prefabricated pipe section (1),
It is using cement mortar that the beans gravel gap filling of ring prefabricated pipe section filling behind is full, closed-loop is formed, grouting sequence is served as reasons
Under it is supreme, symmetrical, longitudinally every hole slip casting during grouting, per one hole of five rings note；Pore pressure force to be in the milk reach 0.2MPa~
During 0.3MPa, grout hole stops slip casting, and continues perfusion 5min and terminate；
4) every 20 ring carries out once circumferential closure, and circumferential direction closure is positioned at just branch and section of jurisdiction radial clearance；Circumferential direction closure is using chemistry
Grouting.
2. according to the construction method filled after two backing of Bored Section of Metro assembled described in claim 1, its feature exists
In：The beans gravel pack system (3) includes beans gravel pack pot (9), beans gravel belt feeder (11), beans gravel pump (10) and pneumatics
Machine (8).
3. according to the construction method filled after two backing of Bored Section of Metro assembled described in claim 1, its feature exists
In：The filling system (4) includes grouting pump (12), agitator tank (14) forms；Drive division is separately configured in slip casting trolley (13)
(15), can automatic moving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720494.4A CN107939420A (en) | 2017-08-21 | 2017-08-21 | The construction method filled after two backing of bored tunnel assembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720494.4A CN107939420A (en) | 2017-08-21 | 2017-08-21 | The construction method filled after two backing of bored tunnel assembled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107939420A true CN107939420A (en) | 2018-04-20 |
Family
ID=61928617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710720494.4A Pending CN107939420A (en) | 2017-08-21 | 2017-08-21 | The construction method filled after two backing of bored tunnel assembled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939420A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505634A (en) * | 2019-01-28 | 2019-03-22 | 山东科技大学 | Emergency type water-impervious airbag apparatus and its application method in tunnel |
| CN109578017A (en) * | 2018-12-28 | 2019-04-05 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of quick liner structure of speciality light section hydraulic tunnel and its construction method |
| CN109707410A (en) * | 2019-01-16 | 2019-05-03 | 交通运输部公路科学研究所 | Wisdom sensing type tunnel-liner support structural system |
| CN110242331A (en) * | 2019-07-29 | 2019-09-17 | 西南交通大学 | A method of pipe-plate lining ring anti-floating is assisted for the anti-floating system in shield tunnel and using it |
| CN111173537A (en) * | 2020-01-07 | 2020-05-19 | 中铁十八局集团有限公司 | Large-scale supplementary grouting method between duct piece and surrounding rock for tunnel construction by TBM method |
| CN111322089A (en) * | 2020-02-28 | 2020-06-23 | 西南交通大学 | Vault prefabricated assembled tunnel and construction method |
| CN111456758A (en) * | 2020-06-03 | 2020-07-28 | 中国水利水电第十工程局有限公司 | Double-shield TBM pipe back supporting method for dealing with rock burst |
| CN113565536A (en) * | 2021-07-24 | 2021-10-29 | 郑州大学 | Mud gushing prevention and control device for tunnel lining drilling and installation method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578017A (en) * | 2018-12-28 | 2019-04-05 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of quick liner structure of speciality light section hydraulic tunnel and its construction method |
| CN109707410A (en) * | 2019-01-16 | 2019-05-03 | 交通运输部公路科学研究所 | Wisdom sensing type tunnel-liner support structural system |
| CN109505634A (en) * | 2019-01-28 | 2019-03-22 | 山东科技大学 | Emergency type water-impervious airbag apparatus and its application method in tunnel |
| CN109505634B (en) * | 2019-01-28 | 2023-10-17 | 山东科技大学 | Emergency type anti-seepage water-air bag device in tunnel and application method thereof |
| CN110242331A (en) * | 2019-07-29 | 2019-09-17 | 西南交通大学 | A method of pipe-plate lining ring anti-floating is assisted for the anti-floating system in shield tunnel and using it |
| CN110242331B (en) * | 2019-07-29 | 2024-03-26 | 西南交通大学 | Anti-floating device for shield tunnel and method for assisting segment lining ring anti-floating by adopting anti-floating device |
| CN111173537B (en) * | 2020-01-07 | 2022-05-03 | 中铁十八局集团有限公司 | Large-scale supplementary grouting method between duct piece and surrounding rock for tunnel construction by TBM method |
| CN111173537A (en) * | 2020-01-07 | 2020-05-19 | 中铁十八局集团有限公司 | Large-scale supplementary grouting method between duct piece and surrounding rock for tunnel construction by TBM method |
| CN111322089A (en) * | 2020-02-28 | 2020-06-23 | 西南交通大学 | Vault prefabricated assembled tunnel and construction method |
| CN111456758B (en) * | 2020-06-03 | 2021-05-14 | 中国水利水电第十工程局有限公司 | Double-shield TBM pipe back supporting method for dealing with rock burst |
| CN111456758A (en) * | 2020-06-03 | 2020-07-28 | 中国水利水电第十工程局有限公司 | Double-shield TBM pipe back supporting method for dealing with rock burst |
| CN113565536A (en) * | 2021-07-24 | 2021-10-29 | 郑州大学 | Mud gushing prevention and control device for tunnel lining drilling and installation method |
| CN113565536B (en) * | 2021-07-24 | 2023-10-27 | 郑州大学 | Device for preventing and controlling mud and sand burst of tunnel lining drilling and mounting method |
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Application publication date: 20180420 |