CN105863697A - Tensile break resistant energy-absorbing anchor rod - Google Patents
Tensile break resistant energy-absorbing anchor rod Download PDFInfo
- Publication number
- CN105863697A CN105863697A CN201610328613.7A CN201610328613A CN105863697A CN 105863697 A CN105863697 A CN 105863697A CN 201610328613 A CN201610328613 A CN 201610328613A CN 105863697 A CN105863697 A CN 105863697A
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- anchor pole
- reinforcing bar
- section
- free
- 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.)
- Pending
Links
- 239000011435 rock Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 29
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a tensile break resistant energy-absorbing anchor rod which comprises an anchor rod body. A nut and a steel plate tray closely attached to the surrounding rock wall are arranged at the end of a tail rod of the anchor rod body. The nut presses the steel plate tray. The middle section of the anchor rod body is an anchor rod free-section steel rib. The front section and the rear section of the anchor rod free-section steel rib are connected through high-strength springs. The front section and the rear section of the anchor rod free-section steel rib are each provided with one inner sleeve with the inner wall provided with a thread. The inner wall threads of the inner sleeves and thread steel ribs of the anchor rod body are closely engaged. The inner sleeves and the high-strength springs are sleeved with outer sleeves in a penetrating mode. The outer sleeves and the anchor rod free-section steel rib are fixedly connected through the welding area. The anchor rod has the following advantage that under the circumstances that the large-deformation anchor rod bears ultimate tension and the anchor rod free-section steel rib is broken by pulling, the supporting ability of the anchor rod can be maintained.
Description
Technical field
The invention belongs to the protective equipment of civil engineering, be specifically related to a kind of anchor pole, be applied to tunnel and tunnel disaster prevention, or be applied to the engineerings such as slope retaining.
Background technology
China greatly develops infrastructure construction at present, the exploitation of the underground space is not limited solely to mining of mining, but omnibearing exploration (such as subway, underground commercial center etc.), anchor pole is as one of the main support form of underground engineering, maintenance engineering is stably played an important role, especially in developmental joint fissure, fragmented rock body, anchor pole is fairly obvious to the reinforcement effect of rock mass.The mining degree of depth is increasingly deeper, Tunnel Engineering rapidly to growing up, buried direction is developed, pass through fragmented rock body and produce the tunnel of country rock large deformation and continue to bring out, it being carried out effective and reasonable preventing and treating and more shows urgent important with control measure.Tunnel excavation and the success or failure of preliminary bracing under the conditions of large deformation fragmented rock body, be to control Tunnel Engineering progress and the deciding factor of quality.
Chinese patent literature CN104612730A discloses a kind of large deformation self adaptation anchor pole on May 13rd, 2015, it includes anchor pole, anchor pole end is straight is fixed with high-strength spring, the other end of high-strength spring is straight is fixed with foot piece, high-strength spring be peripherally equipped with sleeve pipe, being provided with elastic tape capping in the sleeve port of anchor pole, in the end of foot piece with steel plate pallet and nut, nut is pushed down steel plate pallet and is close to country rock wall.This anchor pole can the large deformation that produces of self adaptation country rock, the burst fire-disasters such as tunnel rock burst, coal mine rock burst can be played effective buffering and governance role.But, as conventional anchor pole, there is anchor pole reinforcing bar and tend not to enough generation large deformation because the elongation percentage of self is low and be pulled off, cause whole support system to lose efficacy in this patent.Support system once lost efficacy and will bring immeasurable economic damage, even results in the generation of heavy casualties event, affects the safety in production in colliery, or the normal construction of Other Engineering.
Summary of the invention
For the deficiencies in the prior art, the technical problem to be solved is just to provide a kind of tension and breaks energy-absorption anchor rod, and it can keep safely and effectively suspension roof support in the case of large deformation anchor rod free segment reinforcing bar is it may happen that be pulled off.
The technical problem to be solved is realized by such technical scheme, it includes anchor pole, the end of anchor pole foot piece is with nut and the steel plate pallet being close to country rock wall, nut pushes down steel plate pallet, anchor pole interlude is free section reinforcing bar, before free section reinforcing bar, back segment is coupled by high-strength spring, front, one inwall threaded inner sleeve is respectively installed on the free section reinforcing bar of back segment, the inner thread of inner sleeve is closely engaged with the spiral of anchor pole, pass through in the periphery of inner sleeve and high strong spring and be cased with outer sleeve, it is connected fixing between outer sleeve with free section reinforcing bar by weld zone.
When country rock produces moderate finite deformation, on the one hand high-strength spring is deformed the deformation with suitable for surrounding rock；On the other hand, when anchor pole under tension very big and cause free section reinforcing bar exceed yield limit be pulled off time, inner sleeve on free section reinforcing bar just plays interconnection function by sleeve lining screw thread and being engaged of anchor pole screw thread steel, makes anchor pole can continue to play support action.
Owing to have employed technique scheme, present invention have the advantage that: bearing ultimate tension and in the case of free section reinforcing bar is pulled off at large deformation anchor rod, suspension roof support ability can be maintained.
Accompanying drawing explanation
The accompanying drawing of the present invention is described as follows:
Fig. 1 is the structural representation of the present invention.
In figure: 1. anchor pole foot piece；2. nut；3. steel plate pallet；4. free section reinforcing bar；5. inner sleeve；6. outer sleeve；7. anchor pole；8. weld zone；9. high-strength spring.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
As shown in Figure 1, the present invention includes anchor pole 7, the end of anchor pole foot piece 1 is with nut 2 and the steel plate pallet 3 being close to country rock wall, nut 1 pushes down steel plate pallet 3, anchor pole interlude is free section reinforcing bar 4, before free section reinforcing bar, back segment is coupled by high-strength spring 9, front, one threaded inner sleeve of inwall 5 is respectively installed on the free section reinforcing bar 4 of back segment, the inner thread of inner sleeve 5 is closely engaged with the spiral of anchor pole, pass through in the periphery of inner sleeve 5 and high strong spring 9 and be cased with outer sleeve 6, it is connected fixing between outer sleeve 6 with free section reinforcing bar 4 by weld zone 8.
The present invention breaks mechanism by the deformation of high-strength spring 9, energy-absorbing function and the anti-of inner sleeve, it is possible to be effectively improved the support efficiency of anchor pole.When anchor pole 1 tension is less, this anchor pole is identical with the supporting mechanism of general anchor pole, and outer sleeve 6 can play protection free segment reinforcing bar and not corroded by rock environment, thus extends the service life of anchor pole；When anchor pole is subject to bigger impulsive force (such as seismic force), or when running into Rock-burst, high-strength spring 9 in anchor pole can absorb part energy by deformation, when free section reinforcing bar 4 is pulled off, inner sleeve 5 inner thread still can transfer force to anchorage zone with being engaged of reinforcing bar, thus the dual normal support action guaranteeing anchor pole.
When country rock produces moderate finite deformation, such as rock burst etc., steel plate pallet 3 is by country rock extrapolability more than the friction of rest power between anchor pole of the present invention and country rock, and now, high-strength spring 9 is deformed the deformation with suitable for surrounding rock.When more than reinforcing bar ultimate tension, free segment reinforcing bar 4 may be pulled off anchor pole tension, owing to free segment reinforcing bar 4 is connected by inner sleeve 5, now inner sleeve 5 can increase with the gmatjpdumamics of free segment reinforcing bar 4, and the reinforcing bar being pulled off before and after inner sleeve 5 contact, therefore, under the supporting of inner sleeve 5, anchor pole still can play support action.Because absorbing certain energy when reinforcing bar is pulled off, now inner sleeve 5 connects reinforcing bar continuation to anchorage zone 7 power transmission.So anchor system still can play a role, avoid to a certain extent anchor pole because free segment reinforcing bar 4 be pulled off or anchor rod system cannot large deformation and immediately lead to the Problem of Failure of whole support system.
Claims (1)
1. a tension is broken energy-absorption anchor rod, include anchor pole, the end of anchor pole foot piece is with nut and the steel plate pallet being close to country rock wall, nut pushes down steel plate pallet, anchor pole interlude is free section reinforcing bar, before free section reinforcing bar, back segment is coupled by high-strength spring, it is characterized in that: front, one inwall threaded inner sleeve is respectively installed on the free section reinforcing bar of back segment, the inner thread of inner sleeve is closely engaged with the spiral of anchor pole, pass through in the periphery of inner sleeve and high strong spring and be cased with outer sleeve, it is connected fixing between outer sleeve with free section reinforcing bar by weld zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328613.7A CN105863697A (en) | 2016-05-18 | 2016-05-18 | Tensile break resistant energy-absorbing anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328613.7A CN105863697A (en) | 2016-05-18 | 2016-05-18 | Tensile break resistant energy-absorbing anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105863697A true CN105863697A (en) | 2016-08-17 |
Family
ID=56635140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610328613.7A Pending CN105863697A (en) | 2016-05-18 | 2016-05-18 | Tensile break resistant energy-absorbing anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105863697A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759323A (en) * | 2017-01-20 | 2017-05-31 | 中铁二院工程集团有限责任公司 | Anchor pole shock-resistant and energy-dissipating is constructed |
| CN108442956A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive compression shear formula anchor pole |
| CN108442955A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive friction formula anchor pole |
| CN109555120A (en) * | 2018-12-05 | 2019-04-02 | 中铁二院工程集团有限责任公司 | A kind of prestressing force shock-resistant and energy-dissipating anchor pole |
| CN110925003A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device |
| CN114351699A (en) * | 2021-11-15 | 2022-04-15 | 同济大学 | Graded yielding self-resetting anti-seismic anchor rod and installation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1548458A2 (en) * | 1988-04-04 | 1990-03-07 | Куйбышевское Проектно-Технологическое Бюро Всесоюзного Государственного Научно-Исследовательского И Проектного Института "Вниипроектэлектромонтаж" | Roof bolt |
| CN2498332Y (en) * | 2001-07-19 | 2002-07-03 | 中国矿业大学（北京校区） | Fiber reinforced plastic flexible anchor pin with metal casing |
| CN201588643U (en) * | 2009-12-21 | 2010-09-22 | 中铁隧道勘测设计院有限公司 | Multi-corrosion resistant anchor rod |
| CN103422873A (en) * | 2013-08-16 | 2013-12-04 | 中铁二十一局集团有限公司 | Strong-strength extendable anchor rod |
| CN104265339A (en) * | 2014-09-19 | 2015-01-07 | 辽宁工程技术大学 | Extrusion and friction type energy absorption anchor rod |
| CN104612730A (en) * | 2014-12-10 | 2015-05-13 | 重庆大学 | Large-deformation self-adaptation anchor rod |
| CN204663561U (en) * | 2015-06-02 | 2015-09-23 | 山东科技大学 | A kind of large deformation hollow self-feeding anchor pile |
-
2016
- 2016-05-18 CN CN201610328613.7A patent/CN105863697A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1548458A2 (en) * | 1988-04-04 | 1990-03-07 | Куйбышевское Проектно-Технологическое Бюро Всесоюзного Государственного Научно-Исследовательского И Проектного Института "Вниипроектэлектромонтаж" | Roof bolt |
| CN2498332Y (en) * | 2001-07-19 | 2002-07-03 | 中国矿业大学（北京校区） | Fiber reinforced plastic flexible anchor pin with metal casing |
| CN201588643U (en) * | 2009-12-21 | 2010-09-22 | 中铁隧道勘测设计院有限公司 | Multi-corrosion resistant anchor rod |
| CN103422873A (en) * | 2013-08-16 | 2013-12-04 | 中铁二十一局集团有限公司 | Strong-strength extendable anchor rod |
| CN104265339A (en) * | 2014-09-19 | 2015-01-07 | 辽宁工程技术大学 | Extrusion and friction type energy absorption anchor rod |
| CN104612730A (en) * | 2014-12-10 | 2015-05-13 | 重庆大学 | Large-deformation self-adaptation anchor rod |
| CN204663561U (en) * | 2015-06-02 | 2015-09-23 | 山东科技大学 | A kind of large deformation hollow self-feeding anchor pile |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759323A (en) * | 2017-01-20 | 2017-05-31 | 中铁二院工程集团有限责任公司 | Anchor pole shock-resistant and energy-dissipating is constructed |
| CN108442956A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive compression shear formula anchor pole |
| CN108442955A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive friction formula anchor pole |
| CN109555120A (en) * | 2018-12-05 | 2019-04-02 | 中铁二院工程集团有限责任公司 | A kind of prestressing force shock-resistant and energy-dissipating anchor pole |
| CN110925003A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device |
| CN114351699A (en) * | 2021-11-15 | 2022-04-15 | 同济大学 | Graded yielding self-resetting anti-seismic anchor rod and installation method |
| CN114351699B (en) * | 2021-11-15 | 2023-02-07 | 同济大学 | Graded yielding self-resetting anti-seismic anchor rod and installation method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |