CN102733821A - Secondary double-liquid slurry re-grouting method capable of effectively controlling surface deformation - Google Patents
Secondary double-liquid slurry re-grouting method capable of effectively controlling surface deformation Download PDFInfo
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- CN102733821A CN102733821A CN201210201471XA CN201210201471A CN102733821A CN 102733821 A CN102733821 A CN 102733821A CN 201210201471X A CN201210201471X A CN 201210201471XA CN 201210201471 A CN201210201471 A CN 201210201471A CN 102733821 A CN102733821 A CN 102733821A
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Abstract
The invention discloses a grouting method which is used for shield construction and can effectively control the surface deformation. On the basis of synchronous grouting of a shield tail, double-liquid slurry is re-grouted for the secondary time. The secondary re-grouting is performed from a second ring where a lining segment is pulled out of a shield shell. Grouting holes are reserved near the 11 point to 1 point of an arch crown as much as possible, so that pipe rings can be fixed well, and gaps formed by solidifying and contracting the synchronous grouting slurry can be filled effectively. The initial setting time of the grouted slurry is controlled to be less than or equal to 60s, grouting pressure is calculated according to water and earth pressure, re-grouting is performed every 3 to 5 rings, the grouting process of each grouting hole is kept continuous, and construction cannot be stopped; and various problems in the synchronous grouting can be improved, so that good construction effects of effectively controlling the surface deformation can be achieved.
Description
Technical field
The present invention relates to the slurry injection technique in the subway shield tunnel construction process, relate in particular to a kind of method of secondary after-teeming biliquid slurry control ground settlement.
Background technology
Though the shield-tunneling construction technology is developed on a large scale very much, the stratum deformation that construction causes is still inevitable.When in the city, carrying out shield-tunneling construction, must control the settling amount on the face of land is strict, otherwise will cause harmful effect existing structure such as building, road and underground utilities.The sedimentation that shield tail space causes in each stage before and after the shield-tunneling construction is dominant.In the shield-tunneling construction process, often filled shield tail space through the method for annotating single liquid slurry synchronously in the past.But single slurries initial setting time is long, and initial setting strength is low, and exists arch crown part can't fill closely knit problem, and ground settlement control is not ideal enough.
Summary of the invention
For improving the problem that the single liquid slurry of synchronous notes exists; The invention provides a kind of secondary after-teeming biliquid paste-making method of effective control surface deformable; The present invention is secondary remedial cementing-water glass biliquid slurry after synchronous grouting; The slurries of filling in can solidify rapidly, fill the space on top, hole effectively, effectively control ground settlement.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of secondary after-teeming biliquid paste-making method of effective control surface deformable, and this method and shield construction process are carried out synchronously, and this method comprises the steps:
(1) before the slip casting, in the shield construction process, synchronous grouting behind the lining segment disengaging shield shell, every on the lining segment in an interval, vault 11 point-1 at a distance from 3-5 ring reservation injected hole, capping injected hole;
(2) during slip casting, open injected hole, cement paste in two chambeies of grouting pump and water glass solution converge before injecting injected hole along two bifurcated pipelines of grouting pipeline respectively, inject injected hole together; Wherein, cement paste is mixed by cement and water and forms, and water/binder ratio is 0.70:1 ~ 0.8:0.1; Water glass solution is by Na
2OSiO
2Mix composition with water, the solubility of water glass is 30 ~ 38oBe; Cement paste and water glass solution are pressed the volume ratio of 1:0.3-1:0.6 and are mixed, the grouting pressure of grouting pump generally be no more than the slip casting position water and soil pressure 120%; The initial setting strength of mixed serum should be controlled at more than the 0.15MPa, and the time of just solidifying is in 20s;
(3) after the slip casting, the shutoff injected hole cleans grouting pipeline once more.
The invention has the beneficial effects as follows; The secondary after-teeming biliquid paste-making method that the present invention effectively controls surface deformable is that the useful of synchronous grouting of shield machine itself replenished; Simply, efficient, with low cost, do not influence normal shield-tunneling construction, can effectively control soil layer distortion and ground settlement.
Description of drawings
Below in conjunction with accompanying drawing and implementation step the present invention is further specified;
Fig. 1 is the longitudinal sectional drawing that filling system of the present invention is arranged;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Among the figure: shield shell 1, synchronous grouting zone 2, secondary grouting zone 3, soil layer 4, lining segment 5, workbench 6, grouting pump 7, grouting pipeline 8, injected hole 9.
The specific embodiment
The present invention is directed to synchronous single liquid slurry and solidify the problem slow, that initial setting strength is low, utilize principle of deformation consistency, accomplish after, use ascending pipe to inject cement-sodium silicate type biliquid by near the reservation injected hole vault 11 point ~ 1 at synchronous grouting.The initial setting strength of slurries should be controlled at more than the 0.15MPa, and the time of just solidifying injects flow and diffusion radius, reaches filling effect preferably in the hope of when can comparatively fast solidifying, enlarging slurries in 20s.The first time of solidifying of slurries should be controlled at 20s with interior, every at a distance from 3 ~ 5 ring slip castings at the shield tail, follows shield driving and uninterruptedly constructs.Grouting pressure should be confirmed according to the water and soil pressure at place, place.Can form the half firm partly gentle equivalent layer of rigidity between soft stratum and section of jurisdiction rigidity after this method construction, with the distortion on control stratum; Utilize the characteristics of its rapid solidification effectively to fill the space that synchronous grouting fails to fill simultaneously, prevent erosion.
Secondary grouting uses biliquid slurry grouting pump 7, wherein adds A liquid (cement paste)+B liquid (water glass solution), and proportioning is as the criterion with actual engine request, and cement paste is mixed by cement and water and forms, and water/binder ratio is 0.70:1 ~ 0.8:0.1; Water glass solution is by Na
2OSiO
2Mix composition with water, the solubility of water glass is 30 ~ 38oBe; Cement paste and water glass solution are pressed the volume ratio of 1:0.3-1:0.6 and are mixed.The initial setting strength of mixed serum should be controlled at more than the 0.15MPa, and the time of just solidifying makes slurries can in time solidify the range of scatter with the control slurries in 20s, prevents the excessive deformation of soil layer 4.
Should the injecting paste material of at least one ring be prepared enough for usely before the slip casting, should check its fastness after Grouting Pipe 8 connects.After lining segment 5 was deviate from shield shell 1, the synchronous grouting system of shield structure can be filled synchronous grouting zone 2 automatically.Build section of jurisdiction 5 and carry out secondary after-teeming biliquid slurry from deviating from second lining papers behind the shield shell.Set the grouting pressure of grouting pump 7 according to the water and soil pressure of driving position soil layer 4, the general pressure of annotating eventually is no more than 120% of water and soil pressure, can complete filling secondary grouting zone 3 to guarantee the biliquid slurry.Grouting pressure hour, grouting pump is slip casting fast automatically; When eventually annotating pressure, reduce injection speed, reach and stop slip casting when annotating pressure eventually.So both can guarantee quick slip casting, and can control grouting pressure again and not exceed standard, and guarantee the pipe ring structure is not caused damage.Injection speed can be controlled through grouting pipeline 8.Two bifurcated pipelines of the grouting pipeline 8 of biliquid slurry grouting pump 7 converge before injecting injected hole 9, prevent that slurries mixing too early from solidifying, blocking pipeline.Slurries mix the back and inject the section of jurisdiction fast behind, and it is firm, tight to guarantee that joint and section of jurisdiction injected hole combine.Every notes finish a hole, and in time each bar pipeline of cleaning grouting pipeline 8 guarantees that it is unimpeded.After slip casting was accomplished, reply injected hole 9 carried out conscientious shutoff.
Whole process is advanced with the shield structure, can not be interrupted construction.
Claims (1)
1. effective secondary after-teeming biliquid paste-making method of control surface deformable, this method and shield construction process are carried out synchronously, it is characterized in that, and this method comprises the steps:
(1) before the slip casting, in the shield construction process, lining segment 5 breaks away from shield shell 1 back synchronous grouting, and every the ring at a distance from 3-5 reserved injected hole 9, capping injected hole 9 on the lining segment 5 in an interval, vault 11 point-1;
(2) during slip casting, open injected hole 9, cement paste in 7 two chambeies of grouting pump and water glass solution converge before injecting injected hole 9 along two bifurcated pipelines of grouting pipeline 8 respectively, inject injected hole 9 together; Wherein, cement paste is mixed by cement and water and forms, and water/binder ratio is 0.70:1 ~ 0.8:0.1; Water glass solution is by Na
2OSiO
2Mix composition with water, the solubility of water glass is 30 ~ 38oBe; Cement paste and water glass solution are pressed the volume ratio of 1:0.3-1:0.6 and are mixed, the grouting pressure of grouting pump 7 generally be no more than the slip casting position water and soil pressure 120%; The initial setting strength of mixed serum should be controlled at more than the 0.15MPa, and the time of just solidifying is in 20s;
(3) after the slip casting, the shutoff injected hole 9 once more, clean grouting pipeline 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210201471XA CN102733821A (en) | 2012-06-19 | 2012-06-19 | Secondary double-liquid slurry re-grouting method capable of effectively controlling surface deformation |
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| CN201210201471XA CN102733821A (en) | 2012-06-19 | 2012-06-19 | Secondary double-liquid slurry re-grouting method capable of effectively controlling surface deformation |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089276A (en) * | 2013-01-28 | 2013-05-08 | 中国矿业大学 | Deep-shallow hole and high-low pressure coupling grouting technology |
| CN103244132A (en) * | 2013-04-28 | 2013-08-14 | 上海市机械施工有限公司 | Construction method for crossing houses by aid of shield tunneling machine in sandy soil and slurry injecting system |
| CN103742162A (en) * | 2014-01-20 | 2014-04-23 | 中铁工程装备集团有限公司 | Shield tunneling machine with synchronous grouting device at top of shield tail and synchronous grouting device |
| CN104074530A (en) * | 2014-06-17 | 2014-10-01 | 中铁十五局集团有限公司 | Shield synchronous grouting construction method and construction material |
| CN106150521A (en) * | 2016-06-29 | 2016-11-23 | 上海朗兆公路铁路养护工程技术有限公司 | A kind of construction method preventing and treating uneven changeover portion duct pieces of shield tunnel cracking |
| CN107120121A (en) * | 2017-05-31 | 2017-09-01 | 中建三局基础设施工程有限公司 | A kind of shield-tunneling construction supplements slip casting anti-settling control method in real time |
| CN107575238A (en) * | 2017-09-22 | 2018-01-12 | 中铁六局集团有限公司 | Shield-tunneling construction super close distance grouting method and grouting device |
| CN108331597A (en) * | 2018-01-22 | 2018-07-27 | 中建市政工程有限公司 | A kind of duct pieces of shield tunnel grouting behind shaft or drift lining construction method |
| CN109026066A (en) * | 2018-08-06 | 2018-12-18 | 济南重工股份有限公司 | A kind of novel shield machine dual-fluid synchronous slip casting system |
| CN109736830A (en) * | 2019-01-10 | 2019-05-10 | 中铁建南方建设投资有限公司 | The implementation method of lateral sealing in a kind of TBM tunnel construction |
| CN109877088A (en) * | 2019-01-15 | 2019-06-14 | 中铁工程装备集团技术服务有限公司 | Shield machine shield shell is consolidated mortar package processing method |
| CN110042838A (en) * | 2019-04-25 | 2019-07-23 | 中建四局第一建筑工程有限公司 | A kind of reversed grouting construction method of floor structure |
| CN110566233A (en) * | 2019-09-20 | 2019-12-13 | 成龙建设集团有限公司 | method for duct piece wall post-grouting in shield tunnel construction of full-section hard rock stratum |
| CN111608695A (en) * | 2020-06-05 | 2020-09-01 | 中铁二十局集团有限公司 | Shield constructs synchronous slip casting of construction and mends thick liquid system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2039881A1 (en) * | 2007-09-18 | 2009-03-25 | Bouygues Travaux Publics | Process for determining additives used in tunnel boring machines and device |
| CN101892847A (en) * | 2010-08-04 | 2010-11-24 | 林辉 | Novel double liquid grout injecting mixer |
| CN101761237B (en) * | 2009-12-24 | 2011-06-01 | 上海隧道工程股份有限公司 | Method for constructing isolation pile for shield tunnel to go through deformation control of buildings and structures at short distance |
| CN102242633A (en) * | 2011-07-23 | 2011-11-16 | 中铁十二局集团有限公司 | Method for replacing tail brush in extra large diameter shield driving under high water pressure condition |
-
2012
- 2012-06-19 CN CN201210201471XA patent/CN102733821A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2039881A1 (en) * | 2007-09-18 | 2009-03-25 | Bouygues Travaux Publics | Process for determining additives used in tunnel boring machines and device |
| CN101761237B (en) * | 2009-12-24 | 2011-06-01 | 上海隧道工程股份有限公司 | Method for constructing isolation pile for shield tunnel to go through deformation control of buildings and structures at short distance |
| CN101892847A (en) * | 2010-08-04 | 2010-11-24 | 林辉 | Novel double liquid grout injecting mixer |
| CN102242633A (en) * | 2011-07-23 | 2011-11-16 | 中铁十二局集团有限公司 | Method for replacing tail brush in extra large diameter shield driving under high water pressure condition |
Non-Patent Citations (2)
| Title |
|---|
| ***: "二次同步注双液浆技术在盾构法隧道施工中的应用", 《铁道建筑技术》, no. 04, 20 April 2009 (2009-04-20) * |
| 王小军等: "双液注浆法在泥水盾构中的应用", 《广东土木与建筑》, no. 06, 15 June 2004 (2004-06-15) * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089276B (en) * | 2013-01-28 | 2015-04-29 | 中国矿业大学 | Deep-shallow hole and high-low pressure coupling grouting technology |
| CN103089276A (en) * | 2013-01-28 | 2013-05-08 | 中国矿业大学 | Deep-shallow hole and high-low pressure coupling grouting technology |
| CN103244132A (en) * | 2013-04-28 | 2013-08-14 | 上海市机械施工有限公司 | Construction method for crossing houses by aid of shield tunneling machine in sandy soil and slurry injecting system |
| CN103742162A (en) * | 2014-01-20 | 2014-04-23 | 中铁工程装备集团有限公司 | Shield tunneling machine with synchronous grouting device at top of shield tail and synchronous grouting device |
| CN103742162B (en) * | 2014-01-20 | 2016-06-29 | 中铁工程装备集团有限公司 | Shield tail top is provided with shield machine and the synchronous grouting device of synchronous grouting device |
| CN104074530A (en) * | 2014-06-17 | 2014-10-01 | 中铁十五局集团有限公司 | Shield synchronous grouting construction method and construction material |
| CN106150521A (en) * | 2016-06-29 | 2016-11-23 | 上海朗兆公路铁路养护工程技术有限公司 | A kind of construction method preventing and treating uneven changeover portion duct pieces of shield tunnel cracking |
| CN107120121B (en) * | 2017-05-31 | 2019-10-25 | 中建三局基础设施工程有限公司 | A kind of shield-tunneling construction supplements slip casting anti-settling control method in real time |
| CN107120121A (en) * | 2017-05-31 | 2017-09-01 | 中建三局基础设施工程有限公司 | A kind of shield-tunneling construction supplements slip casting anti-settling control method in real time |
| CN107575238A (en) * | 2017-09-22 | 2018-01-12 | 中铁六局集团有限公司 | Shield-tunneling construction super close distance grouting method and grouting device |
| CN108331597A (en) * | 2018-01-22 | 2018-07-27 | 中建市政工程有限公司 | A kind of duct pieces of shield tunnel grouting behind shaft or drift lining construction method |
| CN109026066A (en) * | 2018-08-06 | 2018-12-18 | 济南重工股份有限公司 | A kind of novel shield machine dual-fluid synchronous slip casting system |
| CN109736830A (en) * | 2019-01-10 | 2019-05-10 | 中铁建南方建设投资有限公司 | The implementation method of lateral sealing in a kind of TBM tunnel construction |
| CN109877088A (en) * | 2019-01-15 | 2019-06-14 | 中铁工程装备集团技术服务有限公司 | Shield machine shield shell is consolidated mortar package processing method |
| CN110042838A (en) * | 2019-04-25 | 2019-07-23 | 中建四局第一建筑工程有限公司 | A kind of reversed grouting construction method of floor structure |
| CN110566233A (en) * | 2019-09-20 | 2019-12-13 | 成龙建设集团有限公司 | method for duct piece wall post-grouting in shield tunnel construction of full-section hard rock stratum |
| CN111608695A (en) * | 2020-06-05 | 2020-09-01 | 中铁二十局集团有限公司 | Shield constructs synchronous slip casting of construction and mends thick liquid system |
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Application publication date: 20121017 |