CN105736024A - Self-adaptive energy-absorption anchor rod - Google Patents
Self-adaptive energy-absorption anchor rod Download PDFInfo
- Publication number
- CN105736024A CN105736024A CN201610071685.8A CN201610071685A CN105736024A CN 105736024 A CN105736024 A CN 105736024A CN 201610071685 A CN201610071685 A CN 201610071685A CN 105736024 A CN105736024 A CN 105736024A
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- self
- disasters
- anchor pole
- adaptive
- 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
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 9
- 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
- 230000006978 adaptation Effects 0.000 claims description 8
- 239000003245 coal Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002689 soil Substances 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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a self-adaptive energy-absorption anchor rod. The self-adaptive energy-absorption anchor rod comprises an anchor rod body (6). A nut (2) and a steel plate tray (3) tightly attached to the wall of surrounding rock are arranged at the end of an anchor rod tail bar (1). The steel plate tray (3) is pressed by the nut (2). The self-adaptive energy-absorption anchor rod is characterized in that the anchor rod body (6) is provided with a steel bar section comprising straight sections (7) and corrugated sections (5), and the straight sections (7) and the corrugated sections (5) are arranged alternately; the straight sections (7) are sleeved with sleeves (4); and threads are arranged on the inner walls of the sleeves (4), and the threads of the sleeves (4) are engaged with steel bar threads of the straight sections (7). The self-adaptive energy-absorption anchor rod has the following advantages that the anchor rod can be self-adaptive to the situation that steel bars of the straight sections are broken due to the fact that the steel bars bear the tension exceeding the limit and can also be self-adaptive to impact loads generated when earthquakes or rockburst occurs, and the general sudden disasters such as foundation support disasters, slope support disasters, tunnel rockburst disasters and coal mine rock burst disasters can be effectively relieved and controlled.
Description
Technical field
The invention belongs to the disaster prevention facility in a kind of side slope, tunnel and tunnel, be specifically related to a kind of self adaptation energy-absorption anchor rod.
Background technology
In underground engineering or slope project, suspension roof support is a kind of cost-effective support form, its speed of application is fast, and excavated section is little, can make full use of protolith load-bearing, rock mass beyond fixing collar is also because of the seriality of initial condition, it is more than passing to fixing collar with load, also because of compatibility of deformation, along with the deformation process of fixing collar, self bear certain load, so suspension roof support is less than the load suffered by the supporting of other form.Therefore, Anchorage Technology is with the cost of the effect of its uniqueness, easy technique, widely purposes and economy, rock-reinforcing field demonstrates more and more vigorous vitality, is widely used in fields such as slope project, base pit engineering, mining engineering and Tunnel Engineering.
But, along with being continuously increased of the underground engineering degree of depth and face width, traditional bolt support technology runs into problems.Failure by shear at sliding surface place or joint plane place of destruction that the common failure mode of anchor pole has the tensile bearing capacity of anchor pole not enough and causes, anchor pole and Rock And Soil destroy.Traditional anchor pole is easy to (as under geological process or rock burst situation) when by the impact load, and micro-strain occurs under limit stress owing to the elongation percentage of anchor pole reinforcing bar self is low, and reinforcing bar is pulled off and causes suspension roof support system to lose efficacy.Support system inefficacy can bring, to engineering, the loss that can not estimate, and even more serious person perhaps can create greater casualties event, affects the lives and properties of the people, or affects the normal construction of engineering.
Summary of the invention
For existing mooring rod technique Problems existing, the technical problem to be solved is just to provide a kind of self adaptation energy-absorption anchor rod, it is capable of Deep Roadway and tunnel it may happen that the situation of rock burst, by anchor pole self adaptation energy-absorbing function, it is provided that one is suspension roof support safely and effectively.
The technical problem to be solved is realized by such technical scheme, and it includes anchor pole, and the end of anchor pole foot piece is with nut and the steel plate pallet being close to country rock wall, and nut pushes down steel plate pallet；Anchor pole has flat segments and bellows segment lengths of rebar separately, is cased with sleeve pipe in flat segments, and described internal surface of sleeve pipe has screw thread, and casing threads and flat segments screw thread steel are mutually twisted.
The operation principle of sleeve pipe and effect are as follows: when anchor pole is subject to less pulling force, and sleeve pipe passes through being engaged of its inner thread and flat segments screw thread steel, plays the effect sharing pulling force；Anchor pole is subject to very big pulling force or impact load and when this section of reinforcing bar is pulled off, by the telescopic joint reinforcing bar being pulled off, continues to pass to power anchorage zone by the gmatjpdumamics between sleeve pipe, reinforcing bar, it is ensured that the high efficiency of suspension roof support system and safety.
Anchor pole bellows segment reinforcing bar mainly tackles impact load (as under geological process or rock burst situation), the energy that anchor pole is laid in by bellows segment reinforcing bar absorbs energy with the process self being straightened, so that it is guaranteed that under burst load impacts, anchor pole will not lose efficacy at once because being pulled off.
Present invention have the advantage that: anchor pole can the 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.
Accompanying drawing explanation
The accompanying drawing of the present invention illustrates 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. sleeve pipe；5. bellows segment；6. anchor pole；7. flat segments.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
As it is shown in figure 1, the present invention includes anchor pole 6, the end of anchor pole foot piece 1 is with nut 2 and the steel plate pallet 3 being close to country rock wall, and nut 2 pushes down steel plate pallet 3；Anchor pole 6 has flat segments 7 and bellows segment 5 lengths of rebar separately, is cased with sleeve pipe 4 in flat segments 7, and described sleeve pipe 4 inwall has screw thread, and the screw thread of sleeve pipe 4 and flat segments 7 screw thread steel are mutually twisted.
Described sleeve pipe mainly has two effects: 1, when flat segments 7 reinforcing bar is subject to less pulling force, and reinforcing steel bar bear is normal, and sleeve pipe 4 plays protection reinforcing bar and will not be corroded by rock environment, and sleeve pipe can undertake part pulling force by its inwall and screw thread steel interlocking simultaneously.2, when flat segments 7 is subject to very big load or impacts suddenly and be pulled off, now sleeve pipe 4 replaces the reinforcing bar broken to continue to anchoring section power transmission, so that it is guaranteed that the effectiveness of anchor system.
The effect of the bellows segment 5 of described anchor pole is: when running into the impact of bigger load or rock burst when anchor pole, bellows segment 5 reinforcing bar absorbs energy by being straightened.The present invention makes anchor pole have higher safety stock, it is possible to adapting to emergency situations, anchor pole of the present invention has the feature of self adaptation energy-absorbing.
When without impact load or country rock without large deformation, the present invention is consistent with the operation principle of conventional anchor, namely relies on the bonding force between anchor pole 6 and grouting body and frictional force, flat segments 7 reinforcing bar and bellows segment 5 reinforcing bar to play the effect of transmission pulling force.
When country rock is deformed, such as rock burst etc. or when running into impact load, such as geological process etc., steel plate pallet 3 is subject to country rock extrapolability more than the friction of rest power between anchor pole of the present invention and country rock, bellows segment 5 reinforcing bar produces stretcher strain, absorbs energy with the deformation of suitable for surrounding rock or impact load.When flat segments 7 reinforcing bar is pulled off, sleeve pipe 4 can connect before and after the reinforcing bar being pulled off two sections, is continued to anchorage zone power transmission by the gmatjpdumamics between sleeve pipe and reinforcing bar, so that it is guaranteed that the safety of suspension roof support system.Anchor pole flat segments 7 length and anchor pole bellows segment 5 length according to anchor pole the engineering calculation of actual supporting, by anchor pole bellows segment 5, make anchor pole bellows segment 5 have higher energy reserve and intensity.
The anchor pole of the present invention has the feature of self adaptation energy-absorbing, it is possible to be applied to the Practical Project of different field.
Claims (1)
1. a self adaptation energy-absorption anchor rod, includes anchor pole (6), and the end of anchor pole foot piece (1) is with nut (2) and the steel plate pallet (3) being close to country rock wall, and nut (2) pushes down steel plate pallet (3)；It is characterized in that: anchor pole (6) has flat segments (7) and bellows segment (5) lengths of rebar separately, is cased with sleeve pipe (4) in flat segments (7), described sleeve pipe (4) inwall has screw thread, and the screw thread of sleeve pipe (4) and flat segments (7) screw thread steel are mutually twisted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071685.8A CN105736024A (en) | 2016-02-02 | 2016-02-02 | Self-adaptive energy-absorption anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071685.8A CN105736024A (en) | 2016-02-02 | 2016-02-02 | Self-adaptive energy-absorption anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736024A true CN105736024A (en) | 2016-07-06 |
Family
ID=56245694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610071685.8A Pending CN105736024A (en) | 2016-02-02 | 2016-02-02 | Self-adaptive energy-absorption anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736024A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863696A (en) * | 2016-05-17 | 2016-08-17 | 太原理工大学 | Corrugated anchored rod device high in strength and large in deformation |
| CN107939427A (en) * | 2017-12-21 | 2018-04-20 | 北京科技大学 | A kind of energy-absorbing anti-seismic anchor rod |
| CN108222990A (en) * | 2018-03-23 | 2018-06-29 | 东北大学 | A kind of M types are released can anchor pole |
| CN112064636A (en) * | 2020-09-20 | 2020-12-11 | 内蒙古福城矿业有限公司 | High-anchoring-force extensible anchor cable device and implementation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1073469A1 (en) * | 1982-10-20 | 1984-02-15 | Криворожский Ордена Трудового Красного Знамени Горнорудный Институт | Anchor bolt |
| CN101929347A (en) * | 2010-08-17 | 2010-12-29 | 中南大学 | Coordinated-deformation energy-absorption anchor rod suitable for mining high-stress large-deformation rock mass |
| CN102720196A (en) * | 2012-06-26 | 2012-10-10 | 浙江省交通规划设计研究院 | Anticorrosive anchor rod capable of preventing slurry from leaking |
| CN203230446U (en) * | 2013-05-16 | 2013-10-09 | 黑龙江科技大学 | Expansion-shell prestressed coal mine energy-absorption shoring anchor rod |
| CN203847138U (en) * | 2014-05-30 | 2014-09-24 | 安徽恒源煤电股份有限公司 | Self-propelled hollow grouting anchor rod |
| CN204113316U (en) * | 2014-09-03 | 2015-01-21 | 西安理工大学 | A kind of interval screw rod body formula large deformation anchor rod |
| CN104612730A (en) * | 2014-12-10 | 2015-05-13 | 重庆大学 | Large-deformation self-adaptation anchor rod |
-
2016
- 2016-02-02 CN CN201610071685.8A patent/CN105736024A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1073469A1 (en) * | 1982-10-20 | 1984-02-15 | Криворожский Ордена Трудового Красного Знамени Горнорудный Институт | Anchor bolt |
| CN101929347A (en) * | 2010-08-17 | 2010-12-29 | 中南大学 | Coordinated-deformation energy-absorption anchor rod suitable for mining high-stress large-deformation rock mass |
| CN102720196A (en) * | 2012-06-26 | 2012-10-10 | 浙江省交通规划设计研究院 | Anticorrosive anchor rod capable of preventing slurry from leaking |
| CN203230446U (en) * | 2013-05-16 | 2013-10-09 | 黑龙江科技大学 | Expansion-shell prestressed coal mine energy-absorption shoring anchor rod |
| CN203847138U (en) * | 2014-05-30 | 2014-09-24 | 安徽恒源煤电股份有限公司 | Self-propelled hollow grouting anchor rod |
| CN204113316U (en) * | 2014-09-03 | 2015-01-21 | 西安理工大学 | A kind of interval screw rod body formula large deformation anchor rod |
| CN104612730A (en) * | 2014-12-10 | 2015-05-13 | 重庆大学 | Large-deformation self-adaptation anchor rod |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863696A (en) * | 2016-05-17 | 2016-08-17 | 太原理工大学 | Corrugated anchored rod device high in strength and large in deformation |
| CN107939427A (en) * | 2017-12-21 | 2018-04-20 | 北京科技大学 | A kind of energy-absorbing anti-seismic anchor rod |
| CN107939427B (en) * | 2017-12-21 | 2023-09-26 | 北京科技大学 | Energy-absorbing-anti-seismic anchor rod |
| CN108222990A (en) * | 2018-03-23 | 2018-06-29 | 东北大学 | A kind of M types are released can anchor pole |
| CN108222990B (en) * | 2018-03-23 | 2023-12-08 | 东北大学 | M-shaped energy release anchor rod |
| CN112064636A (en) * | 2020-09-20 | 2020-12-11 | 内蒙古福城矿业有限公司 | High-anchoring-force extensible anchor cable device and implementation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160706 |
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| RJ01 | Rejection of invention patent application after publication |