CN103669346B - A kind of tuck inside the sleeve raft pipe and the application in landslide control - Google Patents

A kind of tuck inside the sleeve raft pipe and the application in landslide control Download PDF

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Publication number
CN103669346B
CN103669346B CN201310742204.8A CN201310742204A CN103669346B CN 103669346 B CN103669346 B CN 103669346B CN 201310742204 A CN201310742204 A CN 201310742204A CN 103669346 B CN103669346 B CN 103669346B
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China
Prior art keywords
slip casting
tube
sleeve
steel strand
pipe
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CN201310742204.8A
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CN103669346A (en
Inventor
孔纲强
孙广超
顾红伟
周立朵
孙学谨
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Hunan City University
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Hunan City University
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Abstract

The invention discloses a kind of tuck inside the sleeve raft pipe and the application in landslide control, it comprises slip casting outer tube, it is characterized in that described slip casting outer tube is steel pipe, the external surface of slip casting outer tube is provided with screw thread and support arm, in landslide control, it comprises boring, the grouting of sleeve raft pipe, places steel strand, joints cement slurry and anchor bolt grouting outer tube and steel strand step, and construction method of the present invention is simple, strong operability, economic benefit is obvious; Utilize sleeve raft pipe can take different grouting agents as required, realize segmenting slip casting and can in slip casting region a certain section of repeatedly slip-casting, steel strand are installed and cement injection in the slip casting outer tube of indwelling, anchor pole is it can be used as to utilize, weak intercalated layer in the effective reinforcing side slope of energy, improve the snap-in force between anchoring body and Rock And Soil, improve the resistance to overturning of side slope.

Description

A kind of tuck inside the sleeve raft pipe and the application in landslide control
Technical field
The present invention relates to a kind of anchoring in rock and soil field of engineering technology, specifically a kind of tuck inside the sleeve raft pipe and the application in landslide control.
Background technology
Utilizing bolt anchorage rock and soil slope, is one of important method that current engineering circles is conventional.In reinforcing rock and soil slope mortar depositing construction process, because common anchor pole grouting pressure is lower, during grouting, the possibility of grout and grout leaking is larger, according to different stratum characteristics, can not take different grouting agents, select different strengthening motoring.
Sleeve raft pipe grouting is initiated in the eighties of last century 5O age by French Soletanche Foundation Design company, and its structure of mini-valve tube is primarily of compositions such as pipe, rubber case, sealing rings in PVC slip casting outer tube, slip casting.It can be repeated multiple times in same hole, and segmentation is in the milk, and the feature such as the possibility that grout and grout leaking occur is very little, be acknowledged as the most reliable grouting method, be at home and abroad widely used.The water blockoff grouting of famous chunnel, English, method, day, the subway grouting of Yi Deng state, the subway grouting in Taiwan Province and Hong Kong is all adopt this method.
Summary of the invention
The object of this invention is to provide a kind of tuck inside the sleeve raft pipe and the application in landslide control, it adopts sleeve raft pipe grouting to reinforce rock and soil slope, installs steel strand and cement injection, it can be used as anchor pole to utilize in the slip casting outer tube of indwelling.
The present invention adopts following technical scheme to realize its goal of the invention, and a kind of sleeve raft pipe, it comprises slip casting outer tube, and described slip casting outer tube is steel pipe.
The external surface of slip casting outer tube of the present invention is provided with screw thread.
The external surface of slip casting outer tube of the present invention is provided with support arm.
The application of above-mentioned sleeve raft pipe in landslide control, it comprises the following steps:
(1), according to design aperture, adopt the boring of mud off method to projected depth, hole depth penetrates potential water use to stablizing 2m ~ 3m in Rock And Soil, and hole slightly downward-sloping, angle of inclination is 3 degree ~ 15 degree;
(2) according to hole depth, make sleeve raft pipe, will tuck inside the sleeve in raft pipe patchhole, slip casting outer tube upper end is exposed side slope and to be soared aloft face 20 ㎝ ~ 30 ㎝, sleeve shell material is injected the space between slip casting outer tube and the soil body;
(3), after sleeve shell material injects 48 hours, adopt grouting pump to carry out slip casting operation by sleeve raft pipe to side slope, after slip casting, extract pipe and casting head in slip casting;
(4) according to the length of design, be placed in by steel strand in slip casting outer tube, the upper end of steel strand is exposed side slope and to be soared aloft face 30 ㎝ ~ 40 ㎝, injects cement paste, guarantee all to fill cement paste between steel strand and slip casting outer tube in slip casting outer tube;
(5) after cement paste initial set completes, utilize external anchor steel plate to slip casting outer tube and steel strand Shi Hanzhang, in concrete the end of slip casting outer tube and steel strand and external anchor steel plate being cast in subsequently, water and build up the outer anchor pier of concrete;
Repeat step (1) ~ step (5), complete the construction of all anchor poles in side slope, subsequently surface drainage ditch be set on side slope surface.
For increasing the snap-in force between slip casting outer tube and Rock And Soil, the present invention step (2) in, the external surface of described slip casting outer tube is provided with screw thread.
The present invention step (2) in, the external surface of described slip casting outer tube is provided with support arm.
The present invention step (2) in, adopt accelerated cement mortar to port closing, prevent grout in slip casting process.
The present invention step (4) in, described steel strand adopt more than II grade Ribbed Bar to make, and the diameter of steel strand is 16 ㎜ ~ 28 ㎜, and steel strand are provided with inner support.
The present invention step (4) in, described inner support every 1.5m ~ 2.5m install a pair.
Step (4) in, inject cement paste time, water/binder ratio 0.5 ~ 0.7, and the triethanolamine adding 0.005 ﹪ of cement paste.
Owing to adopting technique scheme, the present invention achieves goal of the invention preferably, and construction method is simple, strong operability, and economic benefit is obvious; Utilize sleeve raft pipe can take different grouting agents as required, realize segmenting slip casting and can in slip casting region a certain section of repeatedly slip-casting, steel strand are installed and cement injection in the slip casting outer tube of indwelling, anchor pole is it can be used as to utilize, weak intercalated layer in the effective reinforcing side slope of energy, improve the snap-in force between anchoring body and Rock And Soil, improve the resistance to overturning of side slope.
Accompanying drawing explanation
Fig. 1 is that the present invention tucks inside the sleeve the structural representation of raft pipe;
Fig. 2 is the view of the present invention when constructing;
Fig. 3 is the view after the present invention constructs.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of sleeve raft pipe, it comprises slip casting outer tube 1, and described slip casting outer tube 1 is steel pipe.
The external surface of slip casting outer tube 1 of the present invention is provided with screw thread.
The external surface of slip casting outer tube 1 of the present invention is provided with support arm 2.
The application of above-mentioned sleeve raft pipe in landslide control, it comprises the following steps:
(1), according to design aperture, adopt the boring of mud off method to projected depth, hole depth penetrates potential water use to stablizing 2m ~ 3m in Rock And Soil, and hole slightly downward-sloping, angle of inclination is 3 degree ~ 15 degree;
The first smooth construction plant of the present embodiment, to soar aloft planar survey unwrapping wire in side slope, setting-out, determines bore position and the degree of depth.During boring, the diameter of boring is that (the present embodiment is 0.15 m) to 0.1m ~ 0.2m, and drilling depth penetrates potential water use to stablizing 3m in Rock And Soil, and it is slightly downward-sloping, angle of inclination is 5 degree, adopts pumping mud retaining wall, and mend slurry in time during boring in work progress.
(2) according to hole depth, make sleeve raft pipe, will tuck inside the sleeve in raft pipe patchhole, slip casting outer tube upper end is exposed side slope and to be soared aloft face 20 ㎝ ~ 30 ㎝, and sleeve shell material 9 is injected the space between slip casting outer tube 1 and the soil body;
For increasing the snap-in force between slip casting outer tube 1 and Rock And Soil, the present invention step (2) in, the external surface of described slip casting outer tube 1 is provided with screw thread.
The present invention step (2) in, the external surface of described slip casting outer tube 1 is provided with support arm 2.
The present invention step (2) in, adopt accelerated cement mortar to port closing, prevent grout in slip casting process.
The present embodiment is according to the length of hole depth determination slip casting outer tube 1, its external surface is coated with red paint or pitch, to improve corrosion resistance, and for increasing the snap-in force between slip casting outer tube 1 and Rock And Soil, the external surface of slip casting outer tube 1 is provided with screw thread, and at the external surface of slip casting outer tube 1 at interval of 1.5m ~ 2m (the present embodiment is 2m), weld a pair support arm 2, support arm 2 is made up of the reinforcement welding of diameter 6 ㎜, simultaneously, slip casting outer tube 1 is when laying, and support arm 2 plays effect placed in the middle.According to design slip casting hoisting depth, determine the spacing of slurry discharging hole 5 on slip casting outer tube 1, slurry discharging hole 5 overlaps rubber sleeve valve 3; The general long 0.6m ~ 1m of casting head 7 (the present embodiment is 0.8m) surrounding lays the slurry outlet of 6 ~ 12 (the present embodiment is 12) diameter 6 ㎜ ~ 8 ㎜ (the present embodiment is 8 ㎜) equably, step stop grouting plug 6 is established at casting head 7 two ends, play grouting effect, in slip casting, pipe 4 is connected with casting head 7 by joint 8.
After boring terminates, insert sleeve raft pipe immediately, until at the bottom of hole, ensure that the center of slip casting outer tube 1 overlaps with drill center as far as possible, slip casting outer tube 1 exposes side slope and to soar aloft face 20 ㎝, to place external anchor steel plate, by suitable for aperture protective treatment, prevents in foreign material hand-hole; Sleeve shell material 9 is injected in space between slip casting outer tube 1 and the soil body, and generally, sleeve shell material 9 has grouting effect does not need sealing, if really need, adopts accelerated cement mortar to port closing, prevents grout in slip casting process.
(3), after sleeve shell material 9 injects 48 hours, adopt grouting pump to carry out slip casting operation by sleeve raft pipe to side slope, after slip casting, extract pipe 4 and casting head 7 in slip casting;
As shown in Figure 2, retrusive segmentation is adopted to carry out slip casting, until complete opening slip casting completes during the present embodiment slip casting, mortar depositing construction parameter is carried out test according to stratum actual conditions and is confirmed, and constantly improve adjustment in constructing at the scene, in conjunction with grouting pressure situation of change, on-the-spot dynamic conditioning optimizes grouting parameter.
(4) according to the length of design, be placed in by steel strand 12 in slip casting outer tube 1, the upper end of steel strand 12 is exposed side slope and to be soared aloft face 30 ㎝ ~ 40 ㎝, injects cement paste 11, guarantee all to fill cement paste 11 between steel strand 12 and slip casting outer tube 1 in slip casting outer tube 1;
The present invention step (4) in, described steel strand 12 adopt more than II grade Ribbed Bar to make, and the diameter of steel strand 12 is 16 ㎜ ~ 28 ㎜, and steel strand 12 are provided with inner support 10.
The present invention step (4) in, described inner support 10 every 1.5m ~ 2.5m install a pair.
Step (4) in, inject cement paste 11 time, water/binder ratio 0.5 ~ 0.7, and the triethanolamine adding 0.005 ﹪ of cement paste 11.
As shown in Figure 3, the present embodiment is according to designing length, the diameter determined, and process steel strand 12, the diameter of steel strand 12 is 22 ㎜; When laying, be in the center of slip casting outer tube 1 for making steel strand 12 and increase the snap-in force of steel strand 12 and cement paste 11, steel strand 12 install a pair inner support 10 every 2.0m, and the upper end of steel strand 12 is exposed side slope and to be soared aloft face 30 ㎝, to place external anchor steel plate; During slip casting, adopt the slip casting of gravity flow mode, all fill cement paste 11 between the inwall guaranteeing steel strand 12 and slip casting outer tube 1, be accelerate solidifying of cement paste 11, in cement paste 11, add the triethanolamine of 0.005 ﹪ of cement paste 11.
(5) after cement paste 11 initial set completes, utilize external anchor steel plate to slip casting outer tube 1 and steel strand 12 Shi Hanzhang, in concrete the end of slip casting outer tube 1 and steel strand 12 and external anchor steel plate being cast in subsequently, water and build up the outer anchor pier of concrete;
External anchor steel plate described in the present embodiment is circular steel plate, and diameter is 0.4m, and thickness is 40 ㎜, the outer anchor pier of the concrete of building its be highly 0.5m, the top length of side is 0.5m, and the bottom length of side is the trapezoidal stage body of 0.7m.
Repeat step (1) ~ step (5), complete the construction of all anchor poles in side slope, subsequently surface drainage ditch be set on side slope surface.
The present invention utilizes sleeve raft pipe can take different grouting agents as required, realize segmenting slip casting and can in slip casting region a certain section of repeatedly slip-casting, and by installing steel strand and cement injection in the slip casting outer tube of indwelling, anchor pole is it can be used as to utilize, weak intercalated layer in the effective reinforcing side slope of energy, improve the snap-in force between anchoring body and Rock And Soil, improve the resistance to overturning of side slope.Construction method of the present invention is simple, and strong operability, Be very effective, economic benefit is obvious.

Claims (5)

1. to tuck inside the sleeve the application of raft pipe in landslide control, it is characterized in that it comprises the following steps:
(1), according to design aperture, adopt the boring of mud off method to projected depth, hole depth penetrates potential water use to stablizing 2m ~ 3m in Rock And Soil, and hole slightly downward-sloping, angle of inclination is 3 degree ~ 15 degree;
(2), according to hole depth, make sleeve raft pipe, will tuck inside the sleeve in raft pipe patchhole, slip casting outer tube upper end is exposed side slope and to be soared aloft face 20 ㎝ ~ 30 ㎝, sleeve shell material is injected the space between slip casting outer tube and the soil body, described slip casting outer tube is steel pipe, and the external surface of slip casting outer tube is provided with screw thread and support arm;
(3), after sleeve shell material injects 48 hours, adopt grouting pump to carry out slip casting operation by sleeve raft pipe to side slope, after slip casting, extract pipe and casting head in slip casting;
(4) according to the length of design, be placed in by steel strand in slip casting outer tube, the upper end of steel strand is exposed side slope and to be soared aloft face 30 ㎝ ~ 40 ㎝, injects cement paste, guarantee all to fill cement paste between steel strand and slip casting outer tube in slip casting outer tube;
(5) after cement paste initial set completes, utilize external anchor steel plate to slip casting outer tube and steel strand Shi Hanzhang, in concrete the end of slip casting outer tube and steel strand and external anchor steel plate being cast in subsequently, water and build up the outer anchor pier of concrete;
Repeat step (1) ~ step (5), complete the construction of all anchor poles in side slope, subsequently surface drainage ditch be set on side slope surface.
2. to tuck inside the sleeve according to claim 1 the application of raft pipe in landslide control, it is characterized in that step (2) in, adopt accelerated cement mortar to port closing, prevent grout in slip casting process.
3. to tuck inside the sleeve according to claim 1 the application of raft pipe in landslide control, it is characterized in that step (4) in, described steel strand adopt more than II grade Ribbed Bar to make, and the diameter of steel strand is 16 ㎜ ~ 28 ㎜, and steel strand are provided with inner support.
4. to tuck inside the sleeve according to claim 3 the application of raft pipe in landslide control, it is characterized in that step (4) in, described inner support is installed a pair every 1.5m ~ 2.5m.
5. to tuck inside the sleeve according to claim 1 the application of raft pipe in landslide control, it is characterized in that step (4) in, when injecting cement paste, water/binder ratio 0.5 ~ 0.7, and the triethanolamine adding 0.005 ﹪ of cement paste.
CN201310742204.8A 2013-12-30 2013-12-30 A kind of tuck inside the sleeve raft pipe and the application in landslide control Expired - Fee Related CN103669346B (en)

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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
CN105544547B (en) * 2015-12-17 2017-12-15 中国一冶集团有限公司 A kind of cover type segmentation strengthening fill and soft soil layer device and method
CN106284340B (en) * 2016-08-11 2018-09-11 重庆大学 A kind of electromagnetic field seepage flow joint anchor pole drainage arrangement and its construction method
CN106284339B (en) * 2016-08-11 2018-12-18 重庆大学 A kind of sleeve valve barrel grouting draining soil nailing branch latch device and its construction method
CN106761835B (en) * 2017-01-24 2018-11-06 江苏建筑职业技术学院 A kind of Karst Tunnel leak segmenting slip casting construction method
CN107956495B (en) * 2017-11-21 2019-05-31 浙江双林古建园林工程有限公司 A kind of stone cultural artifact anchoring process
CN109139063B (en) * 2018-10-17 2019-10-29 中铁十二局集团有限公司 Constructing tunnel film bag Grouting Pipe structure and slip casting lithification construction method
CN111005375B (en) * 2019-11-26 2021-10-26 重庆工商职业学院 Anchoring device for building construction
CN111472810B (en) * 2020-04-15 2021-07-06 高军 High-pressure grouting device and method based on weak broken surrounding rock

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CN102094421A (en) * 2009-12-11 2011-06-15 昆明军龙岩土工程有限公司 Prestressed anchor bar and construction method using same
CN201908308U (en) * 2010-12-31 2011-07-27 中铁港航工程局有限公司 Grouting sleeve valve pipe
CN103410161A (en) * 2013-08-28 2013-11-27 张玉芳 Slant grouting control steel anchor pipe frame and construction method thereof
CN203361149U (en) * 2013-06-21 2013-12-25 郑玉辉 Supporting combination structure for hollow grouting anchor rod

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946570A (en) * 1973-10-02 1976-03-30 S.E.F.I. Sondages-Etanchements-Forages-Injections Support and foundation composite pile for various works and method for manufacturing the same
CN2647918Y (en) * 2003-08-29 2004-10-13 北京市城市建设工程研究院 Dual plug casting slurry checker pipe
CN1587544A (en) * 2004-07-30 2005-03-02 于来喜 Multipurpose controllable slip casting device after cleaving and utilizing process
CN102094421A (en) * 2009-12-11 2011-06-15 昆明军龙岩土工程有限公司 Prestressed anchor bar and construction method using same
CN201908308U (en) * 2010-12-31 2011-07-27 中铁港航工程局有限公司 Grouting sleeve valve pipe
CN203361149U (en) * 2013-06-21 2013-12-25 郑玉辉 Supporting combination structure for hollow grouting anchor rod
CN103410161A (en) * 2013-08-28 2013-11-27 张玉芳 Slant grouting control steel anchor pipe frame and construction method thereof

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