CN104612731B - Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof - Google Patents
Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof Download PDFInfo
- Publication number
- CN104612731B CN104612731B CN201510036013.9A CN201510036013A CN104612731B CN 104612731 B CN104612731 B CN 104612731B CN 201510036013 A CN201510036013 A CN 201510036013A CN 104612731 B CN104612731 B CN 104612731B
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- China
- Prior art keywords
- jurisdiction
- section
- country rock
- anchor tube
- anchor
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Abstract
The invention discloses a kind of detachable adaptive multistage and increase resistance high-strength hollow grouting anchor pile and construction method thereof, including the section of jurisdiction of arc, described section of jurisdiction is enclosed and is connected into tubular structure, is a joint anchor tube；Linked together by Connection Card between described anchor tube, be assembled into more piece；Described each joint anchor tube afterbody center is provided with the expansible stopper connected by connecting rod, and described section of jurisdiction is provided with slurry outlet.Section of jurisdiction specification is identical, it is possible to achieve mass processing, and convenient construction transport simultaneously and workman carry installation；Outside section of jurisdiction along with country rock extrude when, expansible stopper makes section of jurisdiction uniformly open, and increases the frictional force with country rock；Extrude country rock simultaneously, improve the stress of country rock；Carry out high-pressure slip-casting at anchor tube afterbody, not only strengthen country rock, also improve the cohesive force of country rock and anchor tube simultaneously, preferably control the later stage deformation of country rock.
Description
Technical field
The present invention relates to a kind of detachable adaptive multistage and increase resistance high-strength hollow grouting anchor pile and construction method thereof, particularly relate to
A kind of large deformation, country rock weak broken stratum of adapting to, the detachable high-intensity hollow grouting anchor pile freely assembling multistage increasing resistance
And installation and application.
Background technology
For keeping the sound development at full speed of China's economy, the carrying out that capital construction is like a raging fire.Either the most right for strengthening
The dynamics of development of the West Regions, or alleviate urban traffic pressure and city underground of building the most like a raging fire, many Underground Transportation Engineering
Will after the tunnel excavation support issues to country rock；Especially deep mining and China's western part overlength of coal resources is deep
Burying the traffic tunnel of high-ground stress, such surrounding rock of chamber weak broken, geological conditions extreme difference, under high stress, country rock is easy
There is the large deformation of the obvious rheological equationm of state, how such chamber is implemented effective surrounding rock supporting, be also faced with many new
Challenge.At present for tunnel and the mine of self stability extreme difference, its supporting construction is more typically I-steel bow member, grid steel
Framves etc. coordinate Bolt net and jet technology to carry out combined supporting.
The rise of New Austrian Tunneling Method so that the important composition that anchor pole, grouting anchor pile supporting control as a kind of important surrounding rock stability
Part.Deep Underground Space exploitation faces the problem such as heavily stressed, large deformation, difficult supporting, the anchor pole of traditional form, and size is advised
Lattice are more single, and often occur being pulled out along with surrouding rock deformation or the phenomenon such as fracture, it is impossible to according to the deformation of country rock
Situation realizes dynamic self adaptation and increases resistance reinforcing, and chamber can not provide effective guarantee steadily in the long term.
Summary of the invention
It is an object of the invention to as overcoming above-mentioned the deficiencies in the prior art, it is provided that detachable adaptive multistage increases resistance high-strength hollow
Grouting anchor pile, can solve in Deep Underground Space digging process, and the anchor pole dimensions of traditional form is more single, and
Often occurring being pulled out along with surrouding rock deformation or the problem such as fracture, this grouting anchor pile is capable of the deformation feelings according to country rock
The dynamic self adaptation of condition anchor pole increases resistance and reinforces, and provides effective guarantee steadily in the long term for chamber.
For achieving the above object, the present invention uses following technical proposals:
Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile, and including the section of jurisdiction of arc, described section of jurisdiction is enclosed and is connected into tubulose
Structure, is a joint anchor tube；Linked together by Connection Card between described anchor tube, be assembled into more piece；Described each joint anchor tube
Afterbody center is provided with the expansible stopper connected by connecting rod, and described section of jurisdiction is provided with slurry outlet.
The two ends of described section of jurisdiction are equipped with groove, and the groove at described two ends is respectively formed an annular after section of jurisdiction is enclosed and is connected into anchor tube and leads to
Road, in described circular passage, card has rubber ring, completes the connection between section of jurisdiction.
The head of described section of jurisdiction and afterbody are equipped with through hole, and described Connection Card is c-type structure, and Connection Card snaps in the through hole of section of jurisdiction
Inside complete the connection of before and after two joint anchor tube.
The two ends of described c-type structural openings are equipped with inside bending.
Round and smooth between described Connection Card and the through hole of section of jurisdiction it is connected.
Described expansible stopper is fixed on connecting rod by locator card.
Described expansible stopper is in the variable cross-section truncated conical shape that various location is same size, and expansible stopper is fixed on by connecting rod deeply
Portion's stabilizing surrounding rock, section of jurisdiction radially slides with superficial part country rock extrusion deformation, and section of jurisdiction and expansible stopper occur displacement to axial,
If in like manner supposing, section of jurisdiction is static, then expansible stopper can be considered and clamp-ons section of jurisdiction along connecting rod to deep wall rock direction, three sections of jurisdiction by
Opening in clamp-oning of wedge shape expansible stopper, each joint anchor tube uniformly same component composition, to realize each joint anchor tube in difference
Country rock depth adaptivity increases resistance.
Described connecting rod buries country rock depths underground by increasing resistance frame.
Described injected hole blossom type is distributed on section of jurisdiction, colored hole, the diffusion of serosity when later stage slip casting.Blossom type perforations adding mode
Appropriate application pipe shaft space, and can guarantee that the intensity of section of jurisdiction, and it is easy to the diffusion of serosity.
Described ring-type high tenacity part is rubber ring.
Detachable adaptive multistage increases the construction method of resistance high-strength hollow grouting anchor pile, comprises the following steps:
Step 1: reinforce the country rock degree of depth as required, determines anchor tube to need by a few joint flower sections of jurisdiction, hole and Connection Card and forms；
Step 2: by locator card, expansible stopper is fixed on the ad-hoc location of connecting rod, so that the interval between expansible stopper and a joint
The length of anchor tube is identical, installs and increases resistance frame；
Step 3: section of jurisdiction, flower hole is assembled around connecting rod, and the two ends of each joint anchor tube are fixed by ring-type high tenacity part,
Connected by Connection Card between each joint anchor tube；
Step 4: after country rock punching will be reinforced, clamp-on Anchor Agent, assembling anchor tube structure is headed into projected depth in hole, it is ensured that even
Extension bar and increasing blocked portion are closely knit with country rock anchoring by Anchor Agent；It is pressed into by assembling anchor tube structure tail portions height after surrouding rock deformation is stable
Row grouting and reinforcing.
The invention have the benefit that
1) each joint anchor tube can be consisted of rubber ring splicing 3 sections of jurisdiction, film clips hole, and each joint anchor tube is connected by 3 Connection Cards,
Connection Card is smoothly connected with section of jurisdiction, every a piece of section of jurisdiction can certain under the constraint of rubber ring in the range of rotate；
2) can be according to the scope (degree of depth) of reinforcing country rock, unrestricted choice assembles the joint number of anchor tube；Each pipe joint sheet specification phase
With, it is possible to achieve mass processing, convenient construction transport simultaneously and workman carry installation；
3) expansible stopper is fixed on deep wall rock does not deforms (or micro-strain) place by increasing blocked portion and connecting rod, exterior tube
Sheet along with country rock extrude when, connecting rod and expansible stopper are motionless, and section of jurisdiction radially slides with country rock, and section of jurisdiction is relative to variable cross-section
Expansible stopper is moved, and expansible stopper wedge shape border makes three sections of jurisdiction of the anchor tube of each joint uniformly open, and increases section of jurisdiction and encloses
The frictional force of rock, extrudes country rock simultaneously, improves the stress of country rock；
4) after country rock initial stage drastic deformation, by section of jurisdiction cavity, carrying out high-pressure slip-casting at anchor tube afterbody, serosity is by pipe
The gap and the slurry outlet that split between sheet are diffused into country rock；Not only strengthen country rock, also improve country rock and anchor tube simultaneously
Cohesive force, preferably controls the later stage deformation of country rock.
Accompanying drawing explanation
The assembling structural representation of the three joint hollow grouting anchor piles that Fig. 1 provides for the embodiment of the present invention；
The axially expanded schematic diagram of plane of the three joint hollow grouting anchor piles that Fig. 2 provides for the embodiment of the present invention；
Fig. 3 is three joint connecting rod within hollow grouting anchor pile and the structural representation of expansible stopper in Fig. 1；
In figure, 1 is flower section of jurisdiction, hole, and 2 is Connection Card, and 3 is slurry outlet, and 4 is rubber ring, and 5 is locator card, and 6 is expansible stopper,
7 is connecting rod, and 8 for increasing resistance frame.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile, it mainly includes flower section of jurisdiction, hole 1, connects
Connect card 2, slurry outlet 3, rubber ring 4, locator card 5, expansible stopper 6, connecting rod 7, increase resistance frame 8.Flower section of jurisdiction, hole 1 is 120 °
Arc section of jurisdiction.
As in figure 2 it is shown, 3 sections of jurisdiction, film clips hole 1 of hollow grouting anchor pile form a joint by rubber ring 4, can be according to reinforcing
The degree of depth of country rock freely assembles more piece, and each joint is connected by 3 Connection Cards 2, between Connection Card 2 and flower section of jurisdiction, hole 1
Round and smooth connection, flower section of jurisdiction, hole 1 can rotate in the range of certain angle；Install by connecting rod 7 at inside configuration each joint afterbody
The expansible stopper 6 of series connection；Connecting rod 7 buries country rock depths underground by increasing resistance frame 8；Blossom type is distributed in the pulp of section of jurisdiction, colored hole 1
Hole 3, is the diffusion of serosity when later stage slip casting.
Detachable adaptive multistage increases the construction method of resistance high-strength hollow grouting anchor pile, it is expanded on further in conjunction with accompanying drawing:
1) reinforce country rock scope (degree of depth) as required, determine that needing a few joint spends section of jurisdiction, hole 1 and Connection Card 2 to form；
2) by locator card 5, expansible stopper 6 is fixed on the ad-hoc location of connecting rod 7, installs and increase resistance frame 8；
3) spend section of jurisdiction, hole 1 to assemble around connecting rod 7, and fixed the two ends of each nodule structure, Mei Yijie by rubber ring 4
Structure is connected by Connection Card 2.
4), after being reinforced country rock punching, clamp-on appropriate Anchor Agent, package assembly is headed into projected depth in hole, it is ensured that connecting rod
7 and increase blocked portion 8 and anchor closely knit by Anchor Agent with country rock；Grouting and reinforcing is carried out by structure tail portions high pressure after surrouding rock deformation is stable.
In the present invention, connecting rod can be that high strength cast iron can also be made up of high tenacity multiply steel strand wires.
The present invention is only illustrated as a example by example one tunnel and mine suspension roof support, but be applicable to too subway,
Karst chamber, dark hole, side slope and the supporting of some special underground engineerings.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not to scope
Limiting, one of ordinary skill in the art should be understood that, on the basis of technical scheme, those skilled in the art are not required to
Various amendments that creative work to be paid can be made or deformation are still within protection scope of the present invention.
Claims (10)
- The most detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile, it is characterized in that, including the section of jurisdiction of arc, described section of jurisdiction is enclosed and is connected into tubular structure, is a joint anchor tube；Linked together by Connection Card between described anchor tube, be assembled into more piece；Each joint described anchor tube afterbody center is provided with the expansible stopper connected by connecting rod, and described section of jurisdiction is provided with slurry outlet.
- 2. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, the two ends of described section of jurisdiction are equipped with groove, and the groove at described two ends is respectively formed a circular passage after section of jurisdiction is enclosed and is connected into anchor tube, in described circular passage, card has rubber ring, completes the connection between section of jurisdiction.
- 3. hollow grouting anchor pile as claimed in claim 1, is characterized in that, the head of described section of jurisdiction and afterbody are equipped with through hole, and described Connection Card is c-type structure, and Connection Card completes the connection of before and after two joint anchor tube in snapping in the through hole of section of jurisdiction.
- 4. hollow grouting anchor pile as claimed in claim 3, is characterized in that, the two ends of described c-type structural openings are equipped with inside bending.
- 5. hollow grouting anchor pile as claimed in claim 1, is characterized in that, round and smooth between described Connection Card and the through hole of section of jurisdiction is connected.
- 6. hollow grouting anchor pile as claimed in claim 1, is characterized in that, described expansible stopper is fixed on connecting rod by locator card, and described connecting rod buries country rock depths underground by increasing resistance frame.
- 7. hollow grouting anchor pile as claimed in claim 1, is characterized in that, described expansible stopper is in the variable cross-section truncated conical shape that various location is same size.
- 8. hollow grouting anchor pile as claimed in claim 1, is characterized in that, described slurry outlet blossom type is distributed on section of jurisdiction, colored hole.
- The most detachable adaptive multistage increases the construction method of resistance high-strength hollow grouting anchor pile, it is characterized in that, comprises the following steps:Step 1: reinforce the country rock degree of depth as required, determines anchor tube to need by a few joint flower sections of jurisdiction, hole and Connection Card and forms；Step 2: expansible stopper is fixed on the ad-hoc location of connecting rod by locator card, so that the interval between expansible stopper is identical with the length of a joint anchor tube, is installed and increases resistance frame；Step 3: section of jurisdiction, flower hole is assembled around connecting rod, and the two ends of each joint anchor tube are fixed by ring-type high tenacity part, connected by Connection Card between each joint anchor tube；Step 4: after country rock punching will be reinforced, clamp-on Anchor Agent, assembling anchor tube structure is headed into projected depth in hole, it is ensured that connecting rod and increasing blocked portion are closely knit with country rock anchoring by Anchor Agent；Grouting and reinforcing is carried out by assembling anchor tube structure tail portions high pressure after surrouding rock deformation is stable.
- 10. the construction method of hollow grouting anchor pile as claimed in claim 9, is characterized in that, described ring-type high tenacity part is rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036013.9A CN104612731B (en) | 2015-01-23 | 2015-01-23 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036013.9A CN104612731B (en) | 2015-01-23 | 2015-01-23 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104612731A CN104612731A (en) | 2015-05-13 |
| CN104612731B true CN104612731B (en) | 2016-11-30 |
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| CN201510036013.9A Active CN104612731B (en) | 2015-01-23 | 2015-01-23 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN112664251B (en) * | 2020-12-30 | 2022-07-05 | 开滦（集团）有限责任公司 | Hydraulic expansion type grouting anchor rod and anchoring method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102783A (en) * | 1986-04-17 | 1987-10-28 | 雷蒙德·托马斯·布卢姆菲尔德 | The improvement of roofbolt post |
| JP4311872B2 (en) * | 2000-10-23 | 2009-08-12 | 株式会社ティーエフティー | Self-drilling lock bolt device and self-drilling lock bolt method |
| KR100784491B1 (en) * | 2006-08-28 | 2007-12-11 | 해동소재산업(주) | A fixing tools for rock bolt |
| CN201033872Y (en) * | 2007-04-23 | 2008-03-12 | 中国京冶工程技术有限公司深圳分公司 | Slip casting type anchor bar |
| CN201050379Y (en) * | 2007-07-10 | 2008-04-23 | 北京瑞威大地工程技术有限公司 | Combined grouting anchor pile |
| CN201158818Y (en) * | 2007-12-14 | 2008-12-03 | 张向阳 | Anti-corrosion anchor bar with centering slurry guiding tube |
| CN204059352U (en) * | 2014-07-16 | 2014-12-31 | 陕西师范大学 | A kind of earthen ruins reinforces anchor pole |
| CN204492855U (en) * | 2015-01-23 | 2015-07-22 | 山东大学 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile |
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- 2015-01-23 CN CN201510036013.9A patent/CN104612731B/en active Active
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