CN209261488U - A kind of anchor cable multistage subsection is discontinuous with pipe structure - Google Patents
A kind of anchor cable multistage subsection is discontinuous with pipe structure Download PDFInfo
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- CN209261488U CN209261488U CN201822229741.3U CN201822229741U CN209261488U CN 209261488 U CN209261488 U CN 209261488U CN 201822229741 U CN201822229741 U CN 201822229741U CN 209261488 U CN209261488 U CN 209261488U
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- 238000005553 drilling Methods 0.000 claims abstract description 51
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 230000010410 reperfusion Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 241000537371 Fraxinus caroliniana Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000010891 Ptelea trifoliata Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
It is discontinuous with pipe structure that the utility model relates to a kind of multistage subsections, using multiple and different diameters with pipe-in-pipe and supporting drilling tool drilling and forming hole in broken formation, without casing pipe hole forming in good ground, rear stage can be by reaching broken formation with tube cavity by previous stage with pipe, thus formed in the borehole it is discontinuous multistage with pipe, anchor cable decentralization reperfusion serosity is synchronous joined end to end step by step using tube drawing casing by internal and external threads and baffle disposably extract it is all with pipe.The utility model can effectively maintain hole wall to stablize, and can extract as needed after Multi-stage sleeve use, recycling and reusing, and improve broken formation stream line quality, have preferable technical economic benefit.
Description
Technical field
The utility model relates to the anchor cable borehole wall-protection structures in slope protection project, and in particular in a kind of broken formation
Anchor cable multistage subsection is discontinuous with pipe structure.
Background technique
In the construction process, hole quality is directly related to the drawing property of anchor cable to prestress anchorage cable, especially in broken, pine
Pore-forming under the complex geological conditions such as stratum is dissipated, the quality of pore-forming is difficult to ensure using conventional drilling technology, collapse hole, card easily occurs
The construction problems such as brill, burying, the inconvenience and pipe-following drilling is then constructed, lead to difficulty in decannulation because frictional resistance is larger, influence prestressing force
Anchor cable construction efficiency and pull-out ultimate capacity.
Utility model content
The purpose of this utility model is that the problem of constructing for existing anchor cable pipe-following drilling and tube drawing, proposes
A kind of anchor cable multistage subsection is discontinuous with pipe structure, using multiple and different diameters with pipe-in-pipe and mating brill in broken formation
Have drilling and forming hole, without casing pipe hole forming in good ground, thus formed in the borehole it is discontinuous multistage with pipe, when reperfusion serosity
It is continuously extracted using drilling rod and special connector with pipe step by step.
A kind of anchor cable multistage subsection is discontinuous with pipe structure, including level-one with pipe, second level with pipe, three-level with pipe etc., it is special
Sign is that every grade is made of with pipe casing prosthomere, standardization of casing section, casing periproct, passes through between casing prosthomere and casing periproct
It covers interface tube spiral and connects several standardization of casing sections；The upper end of casing prosthomere be equipped with thick section, which is provided with internal screw thread, circumferential direction 3 ~
4 recess sections and hole, the section that is recessed and hole are located at the top of internal screw thread, rotatable baffle are equipped in recess section, by turning
Axis, spring, limit film are mounted in hole, and filling waterproof material carries out water-proofing treatment on the outside of hole；The lower end of casing periproct is set
There is shoe, outside is equipped with external screw thread, and inside is equipped with thick section.
Preferably, the baffle can rotate around the axis, and spring corner is limited by limit film, and baffle is in its natural state
Open state is threaded into the lower contraction of extruding in recess section outside；Small diameter with pipe precession passes through from top to bottom when, shoe
Baffle is squeezed into recess section by the external screw thread in outside, it is smaller directly with pipe can by upper level casing, next stage with pipe under
When supreme extraction, higher level stops junior with pipe caudal with inside pipe wall baffle.
Preferably, the level-one is sequentially reduced with pipe and three-level with pipe diameter with pipe, second level, and rear stage passes through previous with pipe
Grade reaches broken formation with pipe, with drilling tool pipe-following drilling, determines with pipe series according to actual formation situation, is not limited to three-level.
Preferably, drilling tool is caught in the shoe, off-balance bit stretches out shoe, opens off-balance bit and carries out pipe-following drilling.
Preferably, described every grade with pipe external screw thread and internal screw thread and prime with pipe internal screw thread and rear class with pipe outer spiral shell
Line matches.
The beneficial effects of the utility model are:
1, stable retaining wall can be formed by pipe-following drilling in the case where meeting adverse geological condition, reduces the accidents such as collapse hole, bit freezing, mentions
High construction quality and efficiency；
2, it is constructed using multistage pipe-following drilling, the pipe-following drilling in poor strata is crept into good ground without sleeve, no
Continuous casing can reduce frictional resistance when pulling out casing, improve tube drawing efficiency, and reduce casing usage amount；
3, casing is extracted after anchor cable decentralization and slurry filling, casing can be recycled, and reduce material loss and construction
Cost；
4, it for complex geologic conditions, in the case that soil layer is more, construction requirement is high, can be selected according to the actual conditions of geology
Multistage pipe-following drilling is selected, strong applicability of constructing；
5, by multistage pipe-following drilling retaining wall and a common pressure grouting, secondary pressure slip casting, anchor cable body construction reliable in quality,
Pull-out ultimate capacity improves 10 ~ 20% compared with conventional method.
Detailed description of the invention
Fig. 1 is standard with tube segment schematic diagram；
Fig. 2 is down tube state with pipe prosthomere detail drawing；
Fig. 3 is tube drawing state (nature) with pipe prosthomere detail drawing；
Fig. 4 is tube drawing drilling rod and casing connection detail drawing；
Fig. 5 is casing periproct shoe schematic diagram；
Fig. 6 is the baffle location drawing；
Fig. 7 is down tube state baffle detail drawing；
Fig. 8 is tube drawing state (nature) baffle detail drawing；
Fig. 9 is baffle and spring detail drawing；
Figure 10 is that spring can be rotated corner schematic diagram；
Figure 11 is eccentric drilling device work and rounding state figure；
Figure 12 is level-one pipe-following drilling schematic diagram；
Figure 13 is second level pipe-following drilling schematic diagram；
Figure 14 is three-level pipe-following drilling schematic diagram；
Figure 15 anchor cable transfers schematic diagram；
Figure 16 is tube drawing slip casting schematic diagram.
Mark in figure: 1- side slope, 2- casing, 3- level-one are crushed with pipe, 5- three-level with pipe, 6- drilling, 7- with pipe, 4- second level
Stratum, 8- good ground, 9- casing prosthomere, 10- standardization of casing section, 11- casing periproct, 12- shoe, 13- cover interface tube, 14-
Internal screw thread, 15- external screw thread, the thick section 16-, 17- baffle, 18- spring, 19- limit film, 20- hole, 21- shaft, 22- recess
Section, 23- waterproof material, 24- spring corner, 25- tube drawing drilling rod, 26- prestress anchorage cable, 27- anchor cable centering bracket, 28- slip casting
Body, 29- off-balance bit, 30- center bit, 31- orientating device, 32- carbide button, 33- impactor, 34- drilling rod, 35- slagging channel.
Specific embodiment
In order to deepen the understanding to the utility model, below with reference to Fig. 1 to Figure 16, the embodiments of the present invention are made
It is described in detail, following embodiment is implemented under premised on technical solutions of the utility model, gives detailed embodiment party
Formula, but the protection scope of the utility model is not limited to the following embodiments.
Drilling depth is 20m, and level-one cased bore-bole diameter is 15cm, and length 3m, second level casing diameter is 12cm, length
For 5m, three-level casing diameter is 9cm, length 4m, without with pipe distance about 7m, the body of rod uses 1860 grades of steel strand wires, single
The bonding strength of steel strand wires is greater than 200kN, and an isolating frame is arranged along the every 2m of body of rod axis direction, and injecting paste material is using water ash
Neat slurry than 0.45 ~ 0.50.Drilling tool use TY210, off-balance bit can bias 3cm, such as Figure 11, and outfit pull out accordingly
Pipe device.
Fig. 1 ~ Fig. 3, casing be divided into level-one with pipe, second level with pipe, three-level with pipe etc., by casing prosthomere, standardization of casing section and
Casing periproct passes sequentially through set interface tube spiral and is formed by connecting, and every section length is 1m, thickeies to casing prosthomere 15cm length
The internal screw thread of long 10cm, the hole of 4 diameter 1.5cm and corresponding recess section, recess section are arranged on thick section and is located at interior for processing
The top of screw thread, size are slightly larger than baffle, and spring clip and baffle are successively installed in shaft, and the sectional dimension of baffle is 1 × 3cm,
Shaft is welded in the hole of casing prosthomere again after the installation is completed, then will carry out waterproof material processing on the outside of aperture wall,
Wedge-shaped limit film is welded on the inside of hole wall, Fig. 6 ~ Figure 10 is baffle structure detail, and under limit film and spring effect, baffle can
It is rotated within the scope of 10 °.
Fig. 5, the lower end of casing periproct are equipped with the shoe of long 15cm, and outside is equipped with the external screw thread of long 10cm, and inside is equipped with
Thick section.
For above-mentioned anchor cable in broken formation using the utility model relates to multistage subsection it is discontinuous with pipe structure into
Row construction, can take following construction procedure (Figure 12 ~ Figure 16):
S1, conventional bit aperture drilling: naked brill, the left and right deeply first pore-creating 1.0m, to subsequent are carried out using conventional drill hammer
Pipe-following drilling provides positioning and guiding；
S2, casing processing and assembling: being arranged hole in casing prosthomere, and spring, baffle and wedge shape limit are installed in shaft
After piece, shaft is welded in the hole in casing prosthomere, waterproof material is filled on the outside of hole and carries out water-proofing treatment, then will
Standardization of casing section and casing periproct are in turn mounted in casing prosthomere；
S3, bit change are with pipe to steady soil: before spudding in, drilling tool being assembled and is put into the casing with shoe, allowed partially
Heart drill bit stretches out shoe, opens off-balance bit and is crept into, and should first turn round after confirmation drill bit reaches bottom hole, after normal, into
Row broken formation pipe-following drilling, such as Figure 12；
S4, conventional bit carry out good ground drilling: disengaging the rotary motive power of center drilling tool, slowly promote center drilling tool extremely
Before off-balance bit back and casing shoe until end in contact, with pipe vice clamping drilling rod, make reversed turning, while slowly examination mentions center
Drilling tool, drilling tool carries out borehole cleaning after taking out and good ground routinely drills；
S5, drilling to design hole depth and borehole cleaning: alternately S3 and S4 is repeated according to strata condition, level-one is with pipe using most
Major diameter casing and off-balance bit, second level with pipe using the casing of slightly smaller diameter and the off-balance bit to match, adopt with pipe by three-level
With the casing and off-balance bit of minor diameter, after drilling, extract drilling rod and drilling tool, and check hole depth and borehole cleaning, such as Figure 13 and
Figure 14；
S6, decentralization prestress anchorage cable and tube drawing drilling rod: the prestress anchorage cable met the requirements, Grouting Pipe are compiled after beam with tube drawing
Drilling rod is transferred together to foot of hole, and slip casting tube head is 50 ~ 100mm, such as Figure 15 away from bottom hole；
S7, three-level are with pipe tube drawing and synchronous grouting: after the completion of prestress anchorage cable decentralization, tube drawing drilling rod is inside three-level is with pipe
It is promoted, until tube drawing drilling rod bottom end external screw thread contacts that three-level can not be continued to lift up with the internal screw thread of pipe；Tube drawing is reversely rotated to bore
Bar is on precession internal screw thread, until the blocking due to baffle can not continue precession, as shown in Figure 4；Tube drawing drilling rod and three
After grade is formd with pipe and is reliably connected, tube drawing drilling rod and three-level are promoted with pipe using drawbench；Synchronous grouting shape during tube drawing
At injecting cement paste；
S8, second level, level-one are with pipe tube drawing and synchronous grouting: tube drawing drilling rod are continued to lift up and with pipe, according to S7 the method
Second level is extracted in succession with pipe and level-one with pipe, and synchronous grouting forms injecting cement paste, S7 and S8 are as shown in figure 16；
S9, prestressed anchor cable stretching simultaneously lock: after injecting cement paste reaches prescribed strength, to anchor cable carry out grading tension, every grade
It is incremented by by designing prestressed 25%, every grade of stable 5min, afterbody ultra stretching 110% simultaneously stablizes 20 ~ 30min, is spaced 6 ~ 10d
It compensates tensioning again afterwards, then locks, close anchor head.
Above-described embodiment is only used for illustrating the technical concept of the utility model, rather than protects to the utility model right
The restriction of shield, all non-essential modifications to the present invention made by this concept should all fall into the protection of the utility model
Range.
Claims (5)
1. a kind of anchor cable multistage subsection is discontinuous with pipe structure, including level-one with pipe (3), second level with pipe (4), three-level with pipe (5)
Deng, which is characterized in that every grade is made of with pipe casing prosthomere (9), standardization of casing section (10), casing periproct (11), casing prosthomere
(9) several standardization of casing sections (10) are connected by set interface tube (13) spiral between casing periproct (11)；Casing prosthomere (9)
Upper end is equipped with thick section (16), which is provided with internal screw thread (14), circumferential 3 ~ 4 recess sections (22) and hole (20), be recessed section
(22) and hole (20) is located at the top of internal screw thread (14), is equipped with rotatable baffle (17) in recess section (22), passes through shaft
(21), spring (18), limit film (19) are mounted in hole (20), and filling waterproof material (23) carries out waterproof on the outside of hole (20)
Processing；The lower end of casing periproct (11) is equipped with shoe (12), and outside is equipped with external screw thread (15), and inside is equipped with thick section (16).
2. anchor cable multistage subsection according to claim 1 is discontinuous with pipe structure, which is characterized in that the baffle (17) can
(21) rotate around the shaft, and spring corner (24) is limited by limit film (19), baffle (17) open-shaped state in its natural state,
External screw thread (15) precession squeezes lower shrink in recess section (22).
3. anchor cable multistage subsection according to claim 1 is discontinuous with pipe structure, which is characterized in that the level-one is with pipe
(3), second level is sequentially reduced with pipe (4) and three-level with pipe (5) diameter, and rear stage passes through previous stage with pipe and reaches broken ground with pipe
Layer determines according to actual formation situation with pipe series with drilling tool pipe-following drilling, is not limited to three-level.
4. anchor cable multistage subsection according to claim 1 is discontinuous with pipe structure, which is characterized in that in the shoe (12)
It is caught in drilling tool, off-balance bit (29) stretches out shoe (12), opens off-balance bit (29) and carries out pipe-following drilling.
5. anchor cable multistage subsection according to claim 1 is discontinuous with pipe structure, which is characterized in that described every grade with pipe
External screw thread (15) and internal screw thread (14) and prime match with the internal screw thread (14) and rear class of pipe with the external screw thread (15) of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822229741.3U CN209261488U (en) | 2018-12-28 | 2018-12-28 | A kind of anchor cable multistage subsection is discontinuous with pipe structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822229741.3U CN209261488U (en) | 2018-12-28 | 2018-12-28 | A kind of anchor cable multistage subsection is discontinuous with pipe structure |
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| Publication Number | Publication Date |
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| CN209261488U true CN209261488U (en) | 2019-08-16 |
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| CN201822229741.3U Expired - Fee Related CN209261488U (en) | 2018-12-28 | 2018-12-28 | A kind of anchor cable multistage subsection is discontinuous with pipe structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502754A (en) * | 2020-07-30 | 2021-03-16 | 厦门能巧堂建筑工程有限公司 | Construction method of oversized-diameter anchoring body |
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2018
- 2018-12-28 CN CN201822229741.3U patent/CN209261488U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502754A (en) * | 2020-07-30 | 2021-03-16 | 厦门能巧堂建筑工程有限公司 | Construction method of oversized-diameter anchoring body |
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Granted publication date: 20190816 Termination date: 20201228 |