CN102444118A - Construction method for grouting reinforcement of sleeve valve pipe - Google Patents

Construction method for grouting reinforcement of sleeve valve pipe Download PDF

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Publication number
CN102444118A
CN102444118A CN2010105082495A CN201010508249A CN102444118A CN 102444118 A CN102444118 A CN 102444118A CN 2010105082495 A CN2010105082495 A CN 2010105082495A CN 201010508249 A CN201010508249 A CN 201010508249A CN 102444118 A CN102444118 A CN 102444118A
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CN
China
Prior art keywords
pipe
grouting
slip casting
hole
sleeve valve
Prior art date
Application number
CN2010105082495A
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Chinese (zh)
Inventor
许兆交
周英有
Original Assignee
中铁五局(集团)有限公司
中铁五局集团第三工程有限责任公司
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Application filed by 中铁五局(集团)有限公司, 中铁五局集团第三工程有限责任公司 filed Critical 中铁五局(集团)有限公司
Priority to CN2010105082495A priority Critical patent/CN102444118A/en
Publication of CN102444118A publication Critical patent/CN102444118A/en

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Abstract

The invention discloses a construction method for the grouting reinforcement of a sleeve valve pipe, comprising the following steps of: firstly, drilling a hole; secondly, inserting a grouting pipe B into the grouting drilled hole; thirdly, inserting a grouting pipe A into the grouting pipe B; fourthly, sealing the hole; and fifthly, performing grouting. The grouting pipe B is inserted into the grouting drilled hole down to the bottom of the hole with the top exceeding the ground. In the step of inserting the grouting pipe A into the grouting pipe B, a lower blank cap is added to the bottom of the connected grouting pipe A, and the grouting pipe A and the lower blank cap are slowly inserted into the grouting pipe B section by section. After the grouting pipe A is inserted to the bottom of the grouting pipe B, hole sealing slurry is fully injected between the gap between the grouting pipe B and the soil body; after the hole sealing slurry is injected, water is fully injected in the grouting pipes; the grouting pipe B may not float under the action of gravity; and then the pipe A is pulled out slowly; and finally, an upper blank cap is arranged to cover the upper part of the grouting pipe B. Furthermore, reinforcement slurry is injected in 48 hours after the hole sealing slurry is injected; grouting is performed in a sectional injection manner; and the step distance of grouting is 0.6-1 m.

Description

Sleeve valve pipe grouting and reinforcing job practices
Technical field
The present invention relates to a kind of sleeve valve pipe grouting and reinforcing job practices.
Background technology
Sleeve valve pipe grouting and reinforcing job practices is a kind of grouting method by French Soletanche grouting company initiative, so this method is also claimed the Suo Lietan Hughes method.Because this method has many advantages, grouting effect is good, therefore abroad by extensive employing.At present, domestic to the method research and use less.In practical application, this worker's method has exposed gradually also that construction technology is complicated, slip casting tubing price is higher, be prone to problems such as string slurry and card pipe in the slip casting process.
Summary of the invention
The technical problem that the present invention will solve is; Provide that a kind of occupied ground is few, valve pipe grouting and reinforcing job practices is tucked inside the sleeve in easy construction, consolidation effect significantly, the construction technology that prior art exists is complicated, slip casting tubing price is higher to overcome, be prone to deficiencies such as string slurry and card pipe in the slip casting process.
The technical scheme that the present invention adopted is: it may further comprise the steps: the first, and boring; The second, slip casting B pipe is inserted in the inlet well; The 3rd, slip casting A pipe is inserted slip casting B pipe; The 4th, sealing of hole; The 5th, slip casting.
Slip casting B pipe is inserted in the inlet well, and slip casting B pipe will descend at the bottom of the hole, adds stifle in the slip casting B pipe bottom that connects; Grouting Pipe is lowered in the inlet well; Guarantee under the Grouting Pipe that at the bottom of the hole, top is above ground level, then topped up with water in Grouting Pipe; Utilize action of gravity, Grouting Pipe can not floated.To prevent that foreign material from getting into slip casting B pipe, influence the slip casting operation quality, on B pipe top, add stifle.In slip casting A pipe being inserted slip casting B pipe step, add step in the slip casting A pipe bottom that connects and end the two plug of slurry grouting tubes, slowly, insert in the slip casting B pipe by joint.
After slip casting A pipe is inserted into slip casting B pipe bottom, injects the sealing of hole slurries and fill the space between the full slip casting B pipe and the soil body, 0.5m sentences and adopts the shutoff of accelerated cement mortar down on ground, to prevent the emitting slurry phenomenon to take place in the slip casting process; After the sealing of hole slurries injected, topped up with water in Grouting Pipe was utilized action of gravity, and Grouting Pipe B can not floated, and afterwards the A pipe was proposed lentamente, at last stifle on slip casting B pipe upper cap.
The sealing of hole slurries are low intensive slurries, adopt the match ratio of cement: swell soil=1:2, in mass ratio (being weight ratio).
The sealing of hole slurries inject could inject after 48 hours reinforces slurries, and the segmentation injection mode is taked in slip casting, and the slip casting step pitch is 0.6~1m.
In the construction of this method, can depthkeeping, quantitatively, carry out branch preface, segmentation, gap and repetition slip casting, combine the advantage of fracture grouting method, the close slip casting method of pressure (squeezing) and infiltration slip casting method.Grouting Pipe is divided two kinds of A, B, does not offer slurry discharging hole on the A kind Grouting Pipe, has the slurry discharging hole of 6~8mm on the B kind Grouting Pipe.Overlapping the rubber sleeve valve that anti-burst pressure is 4.5MPa tightly in outside, the porose position of B kind Grouting Pipe; Rubber sleeve valve is covered with slurry discharging hole; Like this, during slip casting, slurries can get into the stratum through slurry discharging hole; And water in the stratum and particle are difficult to get in the Grouting Pipe, thereby reach the one way valve effect of Grouting Pipe.Grouting tube B pipe adopts pvc pipe, lays the slurry discharging hole of 6~12 φ 6~8mm around generally long 0.6~1m equably.3~4 step stop grouting plugs about in 1 scope of floral tube A pipe bottom play only slurry effect.Slip casting core barrel (A pipe) adopts steel pipe processing, and the long 2~4m of every joint takes screwed connection between tube coupling.
The present invention is applicable to that 50m is with interior face of land slip casting.
The sleeve valve pipe that this method is used has the two ends stop grouting plug, can slurries be limited in the regional arbitrary segment limit of slip casting to carry out slip casting, reaches the purpose of segmenting slip casting.
Stop grouting plug can move freely in smooth sleeve valve pipe, as required a certain section repeatedly slip-casting in the slip casting zone.
Needn't establish thicker concrete before the slip casting and end the magmatic rock wall, emit the possibility of slurry, string slurry little when taking bigger grouting pressure.
Can in a Grouting Pipe, adopt different slip casting according to stratum characteristic, select for use different grouting parameters to carry out mortar depositing construction.
Boring, slip casting can take the parallel operations mode, and boring and injected hole spacing distance be generally suitable>6 m, increase work efficiency.
Comprehensive above content, advantage of the present invention is: can slurries be limited in the regional arbitrary segment limit of slip casting and carry out slip casting, reach the purpose of segmenting slip casting; And a certain section repeatedly slip-casting in the slip casting zone as required.Boring, slip casting can take the parallel operations mode, and boring and injected hole spacing distance be generally suitable>6 m, improved operating efficiency.This method is easy to use, and effect is good, and construction technology is simple, easy to operate, cost is low, and grouting consolidation effect is remarkable.
Description of drawings
The sleeve valve tubular structure sketch map that Fig. 1 uses for the present invention, 1---the taper plug, 2---slip casting B pipe, 3---rubber sleeve valve; 4---slip casting A pipe, 5---slurry discharging hole, 6---stop grouting plug; 7---band double-piston grouting tube, 8---joint, 9---connect grouting pump.
Fig. 2 sleeve valve of the present invention pipe grouting and reinforcing sketch map, 2---slip casting B pipe, 4---slip casting A pipe, 6---stop grouting plug, 9-connect grouting pump, 10---the sealing of hole filler, 11---positive stabilization zone, 12---stabilization zone.
The specific embodiment
Embodiments of the invention: it may further comprise the steps: the first, and boring; The second, slip casting B pipe is inserted in the inlet well; The 3rd, slip casting A pipe is inserted slip casting B pipe; The 4th, sealing of hole; The 5th, slip casting.
Slip casting B pipe is inserted in the inlet well, and slip casting B pipe will descend at the bottom of the hole, and the top is above ground level.
In slip casting A pipe being inserted slip casting B pipe step, add step stop grouting plug grouting tube in the slip casting A pipe bottom that connects, slowly, insert in the slip casting B pipe by joint.
After slip casting A pipe is inserted into slip casting B pipe bottom, injects the sealing of hole slurries and fill the space between the full slip casting B pipe and the soil body; After the sealing of hole slurries injected, topped up with water in Grouting Pipe was utilized action of gravity, and Grouting Pipe B can not floated, and afterwards the A pipe was proposed lentamente, at last stifle on slip casting B pipe upper cap.
The sealing of hole slurries are low intensive slurries, adopt the match ratio of cement: swell soil=1:2.
The sealing of hole slurries inject could inject after 48 hours reinforces slurries, and the segmentation injection mode is taked in slip casting, and the slip casting step pitch is 0.6~1m.
Boring can be adopted geology brill, hidden hole drilling or water jetting pore-forming.Sleeve pipe retaining wall water jetting drilling and forming hole, drilling depth should reach grouting reinforcement section height.According to the slip casting requirement, the B of the mounting strap injected hole pipe at the slip casting position, the installation of non-slip casting position is not managed with the B of injected hole.Grouting Pipe B is inserted in the inlet well, guarantee under the Grouting Pipe that at the bottom of the hole, the top is above ground level.Add step stop grouting plug grouting tube in the Grouting Pipe A that connects pipe bottom, slowly, insert in the B pipe by joint.After the A pipe is inserted into B pipe bottom, injects the sealing of hole slurries and fill the space between the full B pipe and the soil body, the sealing of hole slurries adopt low intensive slurries, generally adopt the match ratio of cement: swell soil=1:2, in mass ratio (being weight ratio).After the sealing of hole slurries injected, topped up with water in Grouting Pipe was utilized action of gravity, and Grouting Pipe B can not floated, and afterwards the A pipe was proposed lentamente, at last stifle on slip casting B pipe upper cap.After the A pipe was extracted, 0.5m sentenced and adopts the shutoff of accelerated cement mortar down on ground.The sealing of hole slurries inject and could to inject the reinforcing slurries after 48 hours, and the segmentation injection mode is taked in slip casting, and every section slip casting length is called the slip casting step pitch, and the slip casting step pitch is identical with slurry discharging hole step pitch on the B pipe.Grouting pressure, grouting amount are confirmed according to different geological and groundwater table, generally calculate grouting amount control slip casting effect with the void ratio of geology in the construction.The slip casting step pitch is 0.6~1m, can reduce the influence of stratum inequality property to slip casting effect so effectively.In the slip casting process, after every section slip casting is accomplished, move up or down core barrel (A pipe) length of a step pitch.The employing lifting means moves, or manual pick clamps core barrel with 2 pipe wrench symmetries, and both sides simultaneously evenly firmly, and core barrel (A pipe) is mobile.Every completion 2~4m slip casting length, the joint slip casting core barrel of dismantling.After slip casting finishes, go out the slurries that B manages, on the B pipe, cover stifle, so that multiple notes construction with clear water.

Claims (6)

1. sleeve valve pipe grouting and reinforcing job practices, it is characterized in that: it may further comprise the steps: the first, boring; The second, slip casting B pipe is inserted in the inlet well; Three, slip casting A pipe is inserted slip casting B pipe; Four, sealing of hole; Five, slip casting.
2. sleeve valve pipe grouting and reinforcing job practices according to claim 1 is characterized in that: slip casting B pipe is inserted in the inlet well, and slip casting B pipe arrives at the bottom of the hole down, and the top is above ground level.
3. sleeve valve pipe grouting and reinforcing job practices according to claim 1 is characterized in that: in slip casting A pipe being inserted slip casting B pipe step, add step stop grouting plug grouting tube in the slip casting A pipe bottom that connects, slowly, insert in the slip casting B pipe by joint.
4. sleeve valve pipe grouting and reinforcing job practices according to claim 1 is characterized in that: after slip casting A pipe is inserted into slip casting B pipe bottom, injects the sealing of hole slurries and fill the space between the full slip casting B pipe and the soil body; After the sealing of hole slurries injected, topped up with water in Grouting Pipe was utilized action of gravity, and Grouting Pipe B can not floated, and afterwards the A pipe was proposed lentamente, at last stifle on slip casting B pipe upper cap.
5. sleeve valve pipe grouting and reinforcing job practices according to claim 4, it is characterized in that: the sealing of hole slurries are low intensive slurries, adopt the match ratio of cement: swell soil=1:2, by quality ratio.
6. sleeve valve pipe grouting and reinforcing job practices according to claim 1 is characterized in that: the sealing of hole slurries inject to inject after 48 hours reinforces slurries, and the segmentation injection mode is taked in slip casting, and the slip casting step pitch is 0.6~1m.
CN2010105082495A 2010-10-15 2010-10-15 Construction method for grouting reinforcement of sleeve valve pipe CN102444118A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103898913A (en) * 2014-03-20 2014-07-02 河海大学 Inner geotextile bag sleeve valve pipe grouting construction method
CN104805842A (en) * 2015-04-20 2015-07-29 中铁建设集团有限公司 Steel flower pipe segmented grouting system and construction method thereof
CN104831705A (en) * 2015-04-09 2015-08-12 深圳市永鑫建筑工程集团有限公司 Ultra-deep hole grouting method during underground excavation of tunnel
CN105089056A (en) * 2015-04-09 2015-11-25 中国水电基础局有限公司 Quick constructing method for thick blanket grouting
CN105544547A (en) * 2015-12-17 2016-05-04 中国一冶集团有限公司 Covering type soil filled and soft soil stratum segmented reinforcing device and method
CN105908585A (en) * 2016-04-08 2016-08-31 天津市市政工程设计研究院 Road foundation or base and building soft foundation grouting reinforcement method
CN106013098A (en) * 2016-07-14 2016-10-12 淮海工学院 Miniature steel pipe pile and grouting reinforcement method
CN106640120A (en) * 2016-10-31 2017-05-10 彭峰 Ground-surface fixed-point deep hole layered grouting construction method
CN106703010A (en) * 2015-11-12 2017-05-24 华南理工大学 Jacket-material-bed-free sleeve valve pipe grouting quick construction method
CN106759246A (en) * 2016-11-24 2017-05-31 兰州理工大学 Saturated yielding Loess Site is oriented the device and construction method of fracture grouting reinforcing
CN106978821A (en) * 2017-05-07 2017-07-25 中铁十八局集团有限公司 A kind of soft soil layer reduces shield driving and applies method to the retaining design that building foundation influences
CN107013220A (en) * 2017-05-16 2017-08-04 深圳市瑞利源工程技术有限公司 A kind of tunnel deep hole grouting method, pipe canopy and retrusive Grouting Pipe
CN110656643A (en) * 2019-10-14 2020-01-07 山东大学 Grouting type rotating steel pipe pile and construction method
CN110805030A (en) * 2019-11-13 2020-02-18 上海长凯岩土工程有限公司 Anchor rod static pressure pile
CN110820721A (en) * 2019-11-25 2020-02-21 中铁隧道局集团有限公司 Process for reinforcing blasting area by sleeve valve pipe grouting
CN110984128A (en) * 2019-12-05 2020-04-10 中国建筑第八工程局有限公司 Anti-blocking grouting device and construction method thereof
CN111021333A (en) * 2019-12-25 2020-04-17 西南交通大学 Spiral steel pile for segmented pressure grouting and grouting process thereof

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103898913B (en) * 2014-03-20 2015-07-08 河海大学 Inner geotextile bag sleeve valve pipe grouting construction method
CN103898913A (en) * 2014-03-20 2014-07-02 河海大学 Inner geotextile bag sleeve valve pipe grouting construction method
CN105089056B (en) * 2015-04-09 2017-03-15 中国水电基础局有限公司 A kind of rapid constructing method of deep covering layer grouting
CN104831705A (en) * 2015-04-09 2015-08-12 深圳市永鑫建筑工程集团有限公司 Ultra-deep hole grouting method during underground excavation of tunnel
CN105089056A (en) * 2015-04-09 2015-11-25 中国水电基础局有限公司 Quick constructing method for thick blanket grouting
CN104805842A (en) * 2015-04-20 2015-07-29 中铁建设集团有限公司 Steel flower pipe segmented grouting system and construction method thereof
CN104805842B (en) * 2015-04-20 2017-05-17 中铁建设集团有限公司 Steel flower pipe segmented grouting system and construction method thereof
CN106703010A (en) * 2015-11-12 2017-05-24 华南理工大学 Jacket-material-bed-free sleeve valve pipe grouting quick construction method
CN105544547A (en) * 2015-12-17 2016-05-04 中国一冶集团有限公司 Covering type soil filled and soft soil stratum segmented reinforcing device and method
CN105908585A (en) * 2016-04-08 2016-08-31 天津市市政工程设计研究院 Road foundation or base and building soft foundation grouting reinforcement method
CN106013098B (en) * 2016-07-14 2018-06-05 淮海工学院 Miniature steel pipe pile and grouting strengthening method
CN106013098A (en) * 2016-07-14 2016-10-12 淮海工学院 Miniature steel pipe pile and grouting reinforcement method
CN106640120A (en) * 2016-10-31 2017-05-10 彭峰 Ground-surface fixed-point deep hole layered grouting construction method
CN106759246A (en) * 2016-11-24 2017-05-31 兰州理工大学 Saturated yielding Loess Site is oriented the device and construction method of fracture grouting reinforcing
CN106978821A (en) * 2017-05-07 2017-07-25 中铁十八局集团有限公司 A kind of soft soil layer reduces shield driving and applies method to the retaining design that building foundation influences
CN107013220A (en) * 2017-05-16 2017-08-04 深圳市瑞利源工程技术有限公司 A kind of tunnel deep hole grouting method, pipe canopy and retrusive Grouting Pipe
CN110656643A (en) * 2019-10-14 2020-01-07 山东大学 Grouting type rotating steel pipe pile and construction method
CN110805030A (en) * 2019-11-13 2020-02-18 上海长凯岩土工程有限公司 Anchor rod static pressure pile
CN110820721A (en) * 2019-11-25 2020-02-21 中铁隧道局集团有限公司 Process for reinforcing blasting area by sleeve valve pipe grouting
CN110984128A (en) * 2019-12-05 2020-04-10 中国建筑第八工程局有限公司 Anti-blocking grouting device and construction method thereof
CN111021333A (en) * 2019-12-25 2020-04-17 西南交通大学 Spiral steel pile for segmented pressure grouting and grouting process thereof

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