CN2291449Y - Interanal anchored and external poured anchor bolt - Google Patents

Interanal anchored and external poured anchor bolt Download PDF

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Publication number
CN2291449Y
CN2291449Y CN 97235670 CN97235670U CN2291449Y CN 2291449 Y CN2291449 Y CN 2291449Y CN 97235670 CN97235670 CN 97235670 CN 97235670 U CN97235670 U CN 97235670U CN 2291449 Y CN2291449 Y CN 2291449Y
Authority
CN
China
Prior art keywords
grouting
sealing
slip casting
bolt
anchoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 97235670
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Chinese (zh)
Inventor
陈庆敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN 97235670 priority Critical patent/CN2291449Y/en
Application granted granted Critical
Publication of CN2291449Y publication Critical patent/CN2291449Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an internal anchored and external poured anchor bolt used for soft break and the rock body support of the development of joint and stratification. The utility model comprises a bolt body and nuts of a salver, and the bolt body is not only used as a carrier bolt body but also used as a grouting pipe. The whole bolt body is divided into three parts, an anchoring part which is bend-shaped, a grouting part, and a sealing part which is sheathed with a wedge-shaped annular plug, wherein, a plurality of grouting holes are distributed over the grouting part. The anchor bolt can be singly used as a common anchor bolt when a tunnel is just exhumed, and the operation of sealing is simple. The anchor bolt can be used as a grouting anchor bolt after the tunnel being deformed, and the operation of grouting is easy, and thus, the operation of installing anchor bolt and grouting can be realized individually or simultaneously without mutual interference.

Description

Anchor external poured anchor pole in a kind of
The utility model relates to a kind of anchor pole that is used for underground engineering support, a kind of interior anchor external poured anchor pole of more specifically saying so.This anchor pole can be widely used in the underground engineering support of various types of properties and various cross dimensions and shape, is particularly useful for the rock mass supporting that soft broken, joint and bedding are grown.
Anchor pole and slip casting all are the citation forms that underground passage (tunnel) engineering surrounding rock is reinforced, if utilize anchor pole double as Grouting Pipe, tunnel (tunnel) country rock is carried out slip casting, but the broken rock of one side reinforced roadway (tunnel) periphery, the self-bearing capacity of raising country rock; Also can improve the structure and the mechanical property thereof of broken rock on the other hand, but provide the material base of anchor for anchor pole, bring into play the anchorage effect of anchor pole to greatest extent, so, as watch a bolt support and grouting and reinforcing organically combines, obtain the optimum efficiency of tunnel (tunnel) surrounding rock consolidation, be the content that people study always.The former Soviet Union, Germany etc. just adopt hollow circular-tube as anchor pole country rock to be implemented slip casting in the eighties, and also there are similar scientific achievement in domestic Shandong Mineral College and China Mining University.Facts have proved, the key of enforcement bolt grouting supporting is the sealing between anchor pole and the drill hole wall, the former Soviet Union and Shandong Mineral College adopt " stop grouting plug " to seal, but " stop grouting plug " only played the sealing of hole effect, no anchorage effect, anchor structure is also complicated, influenced utilization in practice, Chinese patent " a kind of sealing anchoring type outer anchor inner grunt anchor pole ", the patent No.: 95240055.3, only have than much progress on this basis, this anchor pole adopts open-core type hard soon, the anchoring section that high-strength sealing anchoring agent is enclosed within anchor bar body carries out anchoring outward, manufacture craft is simple, solved the leakage problem of high pressure slurries well, and sealing material played certain anchorage effect, but still had following many problems: 1. the mechanism of action of bolt grouting is: after anchor pole is implemented slip casting as Grouting Pipe, anchor pole and slip casting are concured, reach best supporting effect.But in practice, because slurries have certain permeability and solidify the characteristic of back volume contraction, and after slip casting finishes, slurries in the pipe shape anchor pole can part run off, the imagination that anchor pole is anchored between hole wall fully can't realize, so, existing bolt grouting technology, the anchorage effect of anchor pole is less relatively, has reduced supporting effect.2. the distortion of roadway surrounding rock has tangible time control effect, and the scope of breaking of country rock is also along with the variation of the time and space changes.For grouting and reinforcing, the tunnel deep rock mass is because initial fissure holds closure state more under high stress, secondary interstice is very agensis also, need very high grouting pressure to inject, so slip casting effect is very poor, and the loosening broken rock of tunnel-surrounding, owing to be in low confined pressure state, secondary interstice is grown, initial fissure also becomes opening-wide state, slurries are easy to inject, and the main object of grouting and reinforcing, so existing grouted anchor bar does not just have or only have the part anchored force at the supporting initial stage, this kind supporting could be used under the situation of having only temporary lining or other support form, can not use separately, in fact, still not find the report that the bolt grouting technology is used separately; The optimum range of slip casting is the broken rock of tunnel-surrounding, so the sealing of hole position of bolt grouting can not be too dark, otherwise can influence slip casting effect.
By above-mentioned bolt grouting mechanism and effect Analysis, at the deficiencies in the prior art, the purpose of this utility model design exactly a kind of in anchor external poured anchor pole, make it to satisfy fully the requirement on the bolt grouting mechanism and the needs of practical application.
The purpose of this utility model can realize in the following way: as described in claims, anchor external poured anchor pole comprises the body of rod in of the present utility model, wedge shape ring-type plug, the shelves ring, pallet and nut, its body of rod adopts the metal steel pipe, it is a Grouting Pipe, it is again the anchor bar body of carrying, its length is determined according to requirement of engineering, the metal steel pipe body of rod one end has external screw thread, be used for fastening nut, the whole metal steel pipe body of rod is divided into three parts, it is anchoring section, slip casting section and sealing of hole section separate with the shelves ring between every section, and anchoring section is a bending, come anchoring with the anchoring agent, the slip casting section is distributed with some pulp apertures, and pulp usefulness when being used for slip casting, sealing of hole section adopt wedge shape ring-type plug to come sealing of hole slip casting.
The utility model compared with prior art has following advantage: 1. during the tunnel just excavates, anchor pole of the present utility model is end anchor anchor pole, can be used as common bolt and uses, anchor rod anchored after, put wedge ring shape plug at termination point of anchor rod, top tray again, last fastening nut, wedge shape ring-type plug compresses with drill hole wall under the extruding of baffle ring and pallet, play the sealing of hole effect, if sprayed mortar can increase sealing of hole effect and supporting effect again, make the sealing of hole problem become very simple.2. when the roadway deformation amount reaches certain numerical value, promptly form certain loosening breaking during scope at tunnel-surrounding, again roadway surrounding rock is implemented slip casting, can make roadway surrounding rock fully obtain release, slip casting is become easily, reach the supporting effect of the best.Simultaneously, skyhook and slip casting are divided into two operations to be carried out, and does not disturb, do not influence the driving speed in tunnel mutually.
Description of drawings:
Accompanying drawing is the structural representation of anchor external poured anchor pole in the utility model.
The embodiment that provides below in conjunction with accompanying drawing does to describe in further detail to the utility model.Anchor external poured anchor pole comprises the body of rod 1 in of the present utility model, wedge shape ring-type plug 2, pallet 3, baffle ring 4 and nut 5, the body of rod 1 is a steel pipe, one end of the metal steel pipe body of rod 1 has external screw thread, is used for fastening nut 5, and the whole metal steel pipe body of rod 1 is divided into three parts, it is anchoring section, slip casting section and sealing of hole section, between anchoring section and the slip casting section, be provided with baffle ring 4 between slip casting section and the sealing of hole section, anchoring section is a bending, come anchoring with anchoring agent 6, be distributed with several slip casting apertures 7 on the slip casting section, the usefulness of pulp when being used for slip casting, sealing of hole section adopt wedge shape ring-type plug 2 sealing of holes, wedge shape ring-type plug 2 is cork or rubber ring, be enclosed within on the body of rod 1, and cooperate sprayed mortar, increase the effect of sealing of hole.
During the tunnel has just excavated, should anchor rod anchored section in preceding insertion bolthole, anchoring section with anchoring agent 6 anchoring rod bodies 1, wedge shape ring-type plug 2 on the other end headgear of anchor pole, top tray 3 again, last fastening nut 5, wedge shape ring-type plug 2 compresses with borehole wall under the extruding of baffle ring 4 and pallet 3, play the sealing of hole effect, cooperate sprayed mortar, increase the effect of sealing of hole.When the tunnel reaches certain deflection, hollow anchor bar body 1 is carried out slip casting as Grouting Pipe, slurries are discharged from the slip casting section slurry outlet of anchor bar body 1, village slurry in the certain loosening scope of breaking that tunnel-surrounding forms, both made roadway surrounding rock obtain abundant release, slip casting is become easily, reach best supporting effect.

Claims (1)

1. one kind is used for soft broken, the interior anchor external poured anchor pole of the rock mass supporting that joint and bedding are grown, comprise the body of rod (1), pallet (3) and nut (5), one end of the body of rod (1) has external screw thread, it is characterized in that: the body of rod (1) is a steel pipe, being the carrying body of rod, is again Grouting Pipe, and the whole body of rod (1) is divided into three parts, it is anchoring section, slip casting section and sealing of hole section, separate with baffle ring (4) between every section, anchoring section is a bending, to increase resistance, with anchoring agent (6) anchoring, be distributed with several slip casting apertures (7) on the slip casting section, the usefulness of pulp when being used for slip casting, sealing of hole section are with wedge shape ring-type plug and are used for sealing of hole.
CN 97235670 1997-04-03 1997-04-03 Interanal anchored and external poured anchor bolt Expired - Fee Related CN2291449Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97235670 CN2291449Y (en) 1997-04-03 1997-04-03 Interanal anchored and external poured anchor bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97235670 CN2291449Y (en) 1997-04-03 1997-04-03 Interanal anchored and external poured anchor bolt

Publications (1)

Publication Number Publication Date
CN2291449Y true CN2291449Y (en) 1998-09-16

Family

ID=33946712

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97235670 Expired - Fee Related CN2291449Y (en) 1997-04-03 1997-04-03 Interanal anchored and external poured anchor bolt

Country Status (1)

Country Link
CN (1) CN2291449Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409671A (en) * 2011-08-04 2012-04-11 广东保威新能源有限公司 Spiral pillar with adjustable upright column mounting height
CN103046548A (en) * 2012-12-22 2013-04-17 中冶集团武汉勘察研究院有限公司 Modified anti-floating anchor rod anchor head
CN104373144A (en) * 2013-08-12 2015-02-25 高原 Expansive high-pressure hole sealing hollow slurry/grease injecting anchor rod
CN111877369A (en) * 2020-07-14 2020-11-03 中国一冶集团有限公司 Construction method for slope support reinforcement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409671A (en) * 2011-08-04 2012-04-11 广东保威新能源有限公司 Spiral pillar with adjustable upright column mounting height
CN103046548A (en) * 2012-12-22 2013-04-17 中冶集团武汉勘察研究院有限公司 Modified anti-floating anchor rod anchor head
CN104373144A (en) * 2013-08-12 2015-02-25 高原 Expansive high-pressure hole sealing hollow slurry/grease injecting anchor rod
CN111877369A (en) * 2020-07-14 2020-11-03 中国一冶集团有限公司 Construction method for slope support reinforcement

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee