CN103132526A - Two-fluid-process grouting plug and grouting method using the same - Google Patents

Two-fluid-process grouting plug and grouting method using the same Download PDF

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Publication number
CN103132526A
CN103132526A CN2013100846203A CN201310084620A CN103132526A CN 103132526 A CN103132526 A CN 103132526A CN 2013100846203 A CN2013100846203 A CN 2013100846203A CN 201310084620 A CN201310084620 A CN 201310084620A CN 103132526 A CN103132526 A CN 103132526A
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China
Prior art keywords
grouting
pipe
valve
admixture
fluid
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Granted
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CN2013100846203A
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CN103132526B (en
Inventor
唐应鹏
刘贵军
陈天樵
邱小宾
赵航
李守华
尹海泉
吕磊
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Chengdu Hydroelectric Power Project Co Ltd Of Sinohydro Engineering Bureau 7
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Chengdu Hydroelectric Power Project Co Ltd Of Sinohydro Engineering Bureau 7
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Priority to CN201310084620.3A priority Critical patent/CN103132526B/en
Publication of CN103132526A publication Critical patent/CN103132526A/en
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Abstract

The invention discloses a two-fluid-process grouting plug and a grouting method using the same and belongs to grouting devices and grouting methods in hydropower construction projects. The two-fluid-process grouting plug comprises a grout inlet pipe, a pressure gage and a valve. The key technique includes that the two-fluid-process grouting plug further comprises an additive pipe. The bottom of the additive pipe is a floral pipe. The grout inlet pipe and the additive pipe share the same sleeve pipe. An observation hole is formed in the upper end of the sleeve pipe. The grout inlet end of the grout inlet pipe is connected with a grout return pipe. The two-fluid-process grouting plug and the grouting method using the same have the advantages that the two-fluid-process grouting plug is adopted to achieve grouting aiming at all hole sections with high repeated grouting frequency in a grouting process, spread of cement grout is effectively controlled, repeated grouting frequency is obviously reduced, time for solidification of the grout is adjusted to 6-12 hours from original 12-24 hours, construction progress is improved, investment outlay is effectively reduced, construction period which is delayed due to objective reasons such as geology is compensated, and foundation is laid to realizing purpose of the whole construction period.

Description

A kind of two-fluid process packer and adopt the grouting method of this packer
Technical field:
A kind of two-fluid process packer and adopt the grouting method of this packer belongs to provisions for grouting and grouting method in the construction of hydropower facilities engineering.
Background technology:
In the construction project in power station, be located under extremely frigid zones, the above ambient conditions of height above sea level 3100m, there are following two aspect problems: 1, complex geologic conditions, curtain grouting zone rock crushing, that the geology rock mass is grown is how roomy, the perforation crack, fills with again number of times in work progress more, and grout consumption is large; 2, the winter environment temperature is low, and minimum temperature reaches-15.6 ℃, and maximum temperature difference reaches 27.8 ℃ round the clock, and slurries are long time of setting, can not normal termination, have a strong impact on construction speed.The problem of this two aspect is the key issue of this power station treatment of geologic defect, and its processing procedure and effect are directly connected to that the power station gross investment is controlled, benefit is put into operation in the realization as scheduled of total duration target and dam safety operation and power station.Therefore, roomy, the processing that connect the crack of extremely frigid zones is the key point of this power station foundation treatment engineering.The problems such as multiple filling section is time many in order to solve, slurries are grown time of setting, need to be in slurries the appropriate Admixture of admixture.When adopting conventional packer, Admixture can only mix in agitation tank.Because slurry fluidity successively decreases comparatively fast, easy blocking pipeline, and can't boost in filling process, there are construction safety hidden danger and hidden danger of quality.
Summary of the invention:
The problem to be solved in the present invention is exactly to provide a kind of just can realize that in filling process cement grout and Admixture fully mix, effectively reduce the packer that slurries are treated the solidifying time for above deficiency, and the grouting method that adopts this packer.Its technical scheme is as follows:
It comprises inlet pipe, pressure meter and valve, and its key technology is also to comprise the Admixture pipe, and Admixture pipe bottom be floral tube, and inlet pipe and Admixture pipe share a sleeve pipe, is provided with peephole in the sleeve pipe upper end, at the stock inlet end connection return pipe of inlet pipe.
Adopt the grouting step of this packer as follows:
1, before the grouting beginning, overfall valve 7 is closed, open observation valve 4 and Admixture valve 5;
2, press certain speed simultaneous pumping cement grout to inlet pipe 10, the Admixture dilute solution is to Admixture pipe 2;
3, when slurries return out from peephole, close observation valve 4 and Admixture valve 5, adopt the neat slurry perfusion, rise gradually grouting pressure simultaneously, and observe constantly overfall pressure meter 6, during greater than design pressure, open 7 releases of overfall valve when the overfall pressure meter.
Compared with prior art, the beneficial effect that has of the present invention is:
1, Admixture stock inlet bottom is the floral tube shape, and Admixture is vaporific ejection, can when grouting, Admixture fully be mixed with slurries, and not be used in, Admixture is mixed with slurries, shortens slurries and treats the solidifying time;
2, there is peephole in the two-fluid process packer, when slurries flow out from peephole, can be with the peephole valve closing, thus adopting the neat slurry perfusion, grouting pressure can be promoted, reduce hidden danger of quality;
3, in filling process, being directed to the multiple section time many hole sections of filling with all adopts two-shot grouting to fill in the row perfusion, effectively controlled the diffusion of cement grout, obviously number of times is filled with in minimizing again, slurries treat that the solidifying time is adjusted to 6~12h by the 12~24h in early stage, and construction speed is improved, effectively reduce cost, retrieve the duration that lags behind because of odjective causes such as geology, lay the foundation for realizing total duration target.
Description of drawings:
Fig. 1 is structural representation of the present invention.
The specific embodiment:
Referring to Fig. 1, the present invention includes inlet pipe 10, pressure meter and valve, its key technology is also to comprise Admixture pipe 2, Admixture pipe 2 bottoms are floral tube 1, inlet pipe 10 and Admixture pipe 2 share a sleeve pipe 9, be provided with peephole 3 in sleeve pipe 9 upper ends, connect return pipe 8 at the stock inlet end of inlet pipe 10 by threeway.
At the stock inlet of Admixture pipe, Admixture valve 5 is installed, is installed back slurry valve 7 at the grout outlet of return pipe, at the peephole of sleeve pipe, observation valve 4 is installed.
Overfall pressure meter 6 is installed on return pipe 8.
Adopt the grouting step of this packer as follows:
1, before the grouting beginning, overfall valve 7 is closed, open observation valve 4 and Admixture valve 5;
2, press certain speed simultaneous pumping cement grout to inlet pipe 10, the Admixture dilute solution is to Admixture pipe 2;
3, when slurries return out from peephole, close observation valve 4 and Admixture valve 5, adopt the neat slurry perfusion, rise gradually grouting pressure simultaneously, and observe constantly overfall pressure meter 6, during greater than design pressure, open 7 releases of overfall valve when the overfall pressure meter.

Claims (4)

1. two-fluid process packer, comprise inlet pipe (10), pressure meter and valve, characterized by further comprising Admixture pipe (2), Admixture pipe (2) bottom is floral tube (1), inlet pipe (10) and Admixture pipe (2) share a sleeve pipe (9), be provided with peephole (3) in sleeve pipe (9) upper end, connect return pipe (8) at the stock inlet end of inlet pipe (10).
2. two-fluid process packer according to claim 1, is characterized in that at the stock inlet of Admixture pipe, Admixture valve (5) being installed, and installs back slurry valve (7) at the grout outlet of return pipe, at the peephole of sleeve pipe, observation valve (4) is installed.
3. two-fluid process packer according to claim 1, is characterized in that at the upper overfall pressure meter (6) of installing of return pipe (8).
4. adopt the grouting method of two-fluid process packer, it is characterized in that comprising the following steps:
1) before the grouting beginning, overfall valve 7 is closed, open observation valve 4 and Admixture valve 5;
2) press certain speed simultaneous pumping cement grout to inlet pipe 10, the Admixture dilute solution is to Admixture pipe 2;
3) when slurries return out from peephole, close observation valve 4 and Admixture valve 5, adopt the neat slurry perfusion, rise gradually grouting pressure simultaneously, and observe constantly overfall pressure meter 6, during greater than design pressure, open 7 releases of overfall valve when the overfall pressure meter.
CN201310084620.3A 2013-03-15 2013-03-15 Two-fluid-process grouting plug and grouting method using the same Active CN103132526B (en)

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Application Number Priority Date Filing Date Title
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CN103132526B CN103132526B (en) 2015-06-10

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110036A (en) * 2013-12-04 2014-10-22 成都绿迪科技有限公司 Grouting plug for two-fluid process
CN105386435A (en) * 2015-12-07 2016-03-09 中交第三航务工程局有限公司南京分公司 Double-liquid grouting system used for cement and water glass solution and construction process of double-liquid grouting system
CN106638606A (en) * 2016-12-29 2017-05-10 中国葛洲坝集团基础工程有限公司 Rapid grouting method of deep overburden layer
CN107254882A (en) * 2017-07-27 2017-10-17 中国水利水电第八工程局有限公司 A kind of highly permeable scall Quick leak stoppage apparatus and blocking method
CN109577313A (en) * 2018-12-11 2019-04-05 宝钢集团新疆八钢铁有限公司 A kind of cold region factory built-up areas grouting and reinforcing technology

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JPH1113070A (en) * 1997-06-27 1999-01-19 Hazama Gumi Ltd Forming method for consolidation grouting hole
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CN201801805U (en) * 2010-08-05 2011-04-20 杭州金泰建设工程有限公司 Combined double-liquid mixing and grouting device
CN201843513U (en) * 2010-11-07 2011-05-25 山东浩珂矿业工程有限公司 Double-liquid grouting pipe
CN202410591U (en) * 2012-02-12 2012-09-05 中煤科工集团武汉设计研究院 Secondary slurrying feeding device
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Publication number Priority date Publication date Assignee Title
JPH1113070A (en) * 1997-06-27 1999-01-19 Hazama Gumi Ltd Forming method for consolidation grouting hole
CN1485505A (en) * 2003-08-29 2004-03-31 北京市城市建设工程研究院 Slip casting lattice pipe with double plug and construction process
RU2263745C1 (en) * 2004-02-20 2005-11-10 Полищук Анатолий Иванович Method for injection pile building (variants)
CN101418557A (en) * 2008-10-15 2009-04-29 中国水利水电第五工程局有限公司 Horizontal backfill grouting construction process of pressure conduit for hydraulic power plant
CN201801805U (en) * 2010-08-05 2011-04-20 杭州金泰建设工程有限公司 Combined double-liquid mixing and grouting device
CN201843513U (en) * 2010-11-07 2011-05-25 山东浩珂矿业工程有限公司 Double-liquid grouting pipe
CN202410591U (en) * 2012-02-12 2012-09-05 中煤科工集团武汉设计研究院 Secondary slurrying feeding device
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110036A (en) * 2013-12-04 2014-10-22 成都绿迪科技有限公司 Grouting plug for two-fluid process
CN105386435A (en) * 2015-12-07 2016-03-09 中交第三航务工程局有限公司南京分公司 Double-liquid grouting system used for cement and water glass solution and construction process of double-liquid grouting system
CN105386435B (en) * 2015-12-07 2017-08-01 中交第三航务工程局有限公司南京分公司 It is a kind of to be used for the double-liquid grouting system and its construction technology of cement and water glass solution
CN106638606A (en) * 2016-12-29 2017-05-10 中国葛洲坝集团基础工程有限公司 Rapid grouting method of deep overburden layer
CN106638606B (en) * 2016-12-29 2019-08-23 中国葛洲坝集团基础工程有限公司 A kind of quick grouting method of deep covering layer
CN107254882A (en) * 2017-07-27 2017-10-17 中国水利水电第八工程局有限公司 A kind of highly permeable scall Quick leak stoppage apparatus and blocking method
CN109577313A (en) * 2018-12-11 2019-04-05 宝钢集团新疆八钢铁有限公司 A kind of cold region factory built-up areas grouting and reinforcing technology

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