CN110778348A - Rock burst resistant anchor rod - Google Patents
Rock burst resistant anchor rod Download PDFInfo
- Publication number
- CN110778348A CN110778348A CN201911181282.9A CN201911181282A CN110778348A CN 110778348 A CN110778348 A CN 110778348A CN 201911181282 A CN201911181282 A CN 201911181282A CN 110778348 A CN110778348 A CN 110778348A
- Authority
- CN
- China
- Prior art keywords
- energy
- absorbing
- rod
- resistance
- increasing
- 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
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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
- E21D21/0093—Accessories
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- 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
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- 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
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- 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 is suitable for the technical field of rock mass engineering support, and provides a rock burst resistant anchor rod which comprises a rod body component, an energy-absorbing resistance-increasing component and a connecting component, wherein the rod body component comprises a rod body and a wedge-shaped body; through setting up the energy-absorbing resistance-increasing device that comprises energy-absorbing portion and resistance-increasing portion, and establish the inner chamber at the energy-absorbing resistance-increasing device with the body of rod cover, set up the wedge simultaneously in the outside of the body of rod, make when the rock burst takes place because the impact kinetic energy body of rod that the rock burst produced slides along the left direction of energy-absorbing resistance-increasing device, the wedge of the body of rod and the energy-absorbing portion mutual contact of energy-absorbing resistance-increasing device slide and absorb the rock burst kinetic energy in the slip in-process, the wedge of the body of rod gets into the resistance-increasing portion of energy-absorbing resistance-increasing device after the energy-absorbing is accomplished, the energy-absorbing resistance-increasing device can become thick under the tensile effect and increase the frictional resistance of the body of rod and rock mass when the wedge slides along resistance-increasing portion, thereby.
Description
Technical Field
The invention belongs to the technical field of rock mass engineering support, and particularly relates to a rock burst resistant anchor rod.
Background
Rock burst is a phenomenon that elastic deformation potential energy accumulated in a rock body is suddenly and violently released under a certain condition, so that the rock bursts and is ejected. Generally, the water is generated in surrounding rocks of class I in the surrounding rock level, and when a river is present near a mountain or the groundwater level is high, groundwater intrudes below the mountain, and at this time, the groundwater is subjected to the pressure of the weight of the mountain, and high pressure is generated. If the mountain body has cracks, underground high-pressure water can go up along the cracks of the mountain body. After high-pressure water enters a mountain crack, air in the crack can find a path around under the pressure, and if an outlet is found on the surface of the mountain, the outlet can possibly be developed into a spring hole. If no exit can be found, high pressure air masses are formed in the mountain.
In the tunnel engineering construction, if the tunnel is tunneled to the vicinity of a high-pressure gas cluster, rock burst is possibly caused, and most of stones generating the rock burst are hard rocks, because only the hard rocks can accumulate the high-pressure gas, the existing rock mass support cannot meet the requirement of preventing the rock burst.
Disclosure of Invention
The invention provides a rock burst resistant anchor rod, and aims to solve the problem that the existing rock mass support cannot meet the requirement of preventing rock burst.
The invention is realized in such a way that the rock burst resistant anchor rod comprises a rod body component, an energy-absorbing resistance-increasing component and a connecting component, wherein the rod body component comprises a rod body and a wedge-shaped body, the wedge-shaped body and the rod body are integrally formed, and the wedge-shaped body is sleeved on the outer side of the rod body;
the energy-absorbing resistance-increasing component comprises an energy-absorbing resistance-increasing device, the energy-absorbing resistance-increasing device is detachably connected with the rod body, and the energy-absorbing resistance-increasing device is sleeved outside the rod body;
coupling assembling includes tray and nut, the tray with body of rod fixed connection, just the tray cover is located the outside of the body of rod, the tray with the energy-absorbing resistance-increasing ware can be dismantled and be connected.
Preferably, the energy-absorbing resistor comprises an energy-absorbing part and a resistor-increasing part, the energy-absorbing part and the resistor-increasing part are integrally formed, and the energy-absorbing part is located on one side of the wedge body, close to the rod body.
Preferably, the energy-absorbing resistor is in contact with the tray.
Preferably, the connecting assembly further comprises a nut, the nut and the tray are integrally formed, the nut is sleeved on the outer side of the energy-absorbing resistor increasing device and is in threaded connection with the energy-absorbing resistor increasing device.
Preferably, the rod body is made of a high-strength steel material, and the energy-absorbing resistor is made of an easily deformable metal material.
Compared with the prior art, the invention has the beneficial effects that: according to the rock burst resistant anchor rod, the energy absorption resistor increasing device consisting of the energy absorption part and the resistor increasing part is arranged, the rod body is sleeved in the inner cavity of the energy absorption resistor increasing device, the wedge body is arranged on the outer side of the rod body, so that when rock burst occurs, the rod body slides along the left direction of the energy absorption resistor increasing device due to impact energy generated by rock burst, the wedge body of the rod body and the energy absorption part of the energy absorption resistor increasing device are in contact sliding to absorb rock burst energy in the sliding process, the wedge body of the rod body enters the resistor increasing part of the energy absorption resistor increasing device after energy absorption is completed, and when the wedge body slides along the resistor increasing part, the energy absorption resistor increasing device is thickened under the stretching action to increase the friction resistance of the rod body and a rock mass, so that the problem of large deformation of the rock mass after rock burst is controlled, and the problem that the.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of an energy-absorbing resistor according to the present invention;
in the figure: 1-rod body component, 11-rod body, 12-wedge body, 2-energy-absorbing resistance-increasing component, 21-energy-absorbing resistance-increasing device, 22-energy-absorbing part, 23-resistance-increasing part, 3-connecting component, 31-tray and 32-nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a technical solution: an anti-rock burst anchor rod comprises a rod body component 1, an energy-absorbing resistance-increasing component 2 and a connecting component 3, wherein the rod body component 1 comprises a rod body 11 and a wedge body 12, the wedge body 12 and the rod body 11 are integrally formed, and the wedge body 12 is sleeved on the outer side of the rod body 11;
the energy-absorbing resistance-increasing component 2 comprises an energy-absorbing resistance-increasing device 21, the energy-absorbing resistance-increasing device 21 is detachably connected with the rod body 11, and the energy-absorbing resistance-increasing device 21 is sleeved outside the rod body 11;
the connecting assembly 3 comprises a tray 31 and a nut 32, the tray 31 is fixedly connected with the rod body 11, the tray 31 is sleeved outside the rod body 11, and the tray 31 is detachably connected with the energy-absorbing resistor-increasing device 21.
In the embodiment, by arranging the rod body 11, the energy-absorbing resistor-increasing device 21 and the tray 31, the energy-absorbing resistor-increasing device 21 is sleeved from the tail of the rod body 11 until the contact position of the wedge body 12 on the rod body 11 and the energy-absorbing part 22 is reached, the tray 31 is sleeved from the tail of the rod body 11 and is in contact with the energy-absorbing resistor-increasing device 21, and then the nut 32 is screwed and fixed, so that the assembly of the rock burst-resistant anchor rod is completed, and a user can set different energy-absorbing and resistance-increasing effects according to actual engineering conditions.
Furthermore, the energy-absorbing resistor-increasing device 21 comprises an energy-absorbing part 22 and a resistor-increasing part 23, the energy-absorbing part 22 and the resistor-increasing part 23 are integrally formed, and the energy-absorbing part 22 is located on one side of the rod body 11 close to the wedge body 12.
In the embodiment, by providing the energy absorbing part 22 and the resistance increasing part 23, the energy absorbing capacity can be adjusted by increasing or decreasing the protruding height of the energy absorbing part 22, and the resistance increasing capacity can be changed by changing the inner angle between the resistance increasing part 23 and the wedge 12, so that the higher the height of the protruding contact body of the energy absorbing part 22 is, the larger the energy absorbing capacity is, the smaller the resistance is, the smaller the inner angle of the inverted cone of the resistance increasing part 23 is, the larger the resistance is increased, the smaller the resistance is, the length and the proportion of the resistance increasing part 23 and the resistance increasing part 23 can be set according to actual requirements, the larger the kinetic energy generated by rock burst is, the larger the protruding height and the length of the energy absorbing part 22 are, and the larger the large deformation of the rock burst is, the smaller the inner.
Further, the energy-absorbing resistor 21 is in contact with the tray 31.
In the present embodiment, the energy-absorbing resistor 21 is in contact with the tray 31, so that the tray 31 can limit the position of the rod body 11 when the anchor is used.
Further, the connecting assembly 3 further includes a nut 32, the nut 32 and the tray 31 are integrally formed, the nut 32 is sleeved on the outer side of the energy-absorbing resistor-increasing device 21, and the nut 32 is in threaded connection with the energy-absorbing resistor-increasing device 21.
In the present embodiment, the nut 32 is provided to facilitate the connection and fixation of the tray 31 and the energy-absorbing resistor 21.
Further, the rod body 11 is made of a high-strength steel material, and the energy-absorbing resistor-increasing device 21 is made of a metal material which is easy to deform.
In this embodiment, the rod body 11 is made of a high-strength steel material to support the rock mass and prevent the rod body 11 from deforming.
The working principle and the using process of the invention are as follows: after the installation of the invention, when rock burst occurs, the rod body 11 slides along the left direction of the energy-absorbing resistor-increasing device 21 due to the impact kinetic energy generated by the rock burst, the wedge body 12 of the rod body 11 and the energy-absorbing part 22 of the energy-absorbing resistor-increasing device 21 slide in a mutual contact manner to absorb the rock burst kinetic energy in the sliding process, the wedge body 12 of the rod body 11 enters the resistor-increasing part 23 of the energy-absorbing resistor-increasing device 21 after the energy absorption is finished, and the energy-absorbing resistor-increasing device 21 thickens under the stretching action to increase the friction resistance of the rod body 11 and the rock body when the wedge body 12 slides along the resistor-increasing part 23, thereby controlling the problem of large deformation of the.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An anti-rock burst anchor rod is characterized in that: the energy-absorbing drag-increasing rod comprises a rod body component (1), an energy-absorbing drag-increasing component (2) and a connecting component (3), wherein the rod body component (1) comprises a rod body (11) and a wedge body (12), the wedge body (12) and the rod body (11) are integrally formed, and the wedge body (12) is sleeved on the outer side of the rod body (11);
the energy-absorbing resistance-increasing component (2) comprises an energy-absorbing resistance-increasing device (21), the energy-absorbing resistance-increasing device (21) is detachably connected with the rod body (11), and the energy-absorbing resistance-increasing device (21) is sleeved on the outer side of the rod body (11);
coupling assembling (3) include tray (31) and nut (32), tray (31) with the body of rod (11) fixed connection, just tray (31) cover is located the outside of the body of rod (11), tray (31) with the energy-absorbing resistance increase ware (21) can be dismantled and be connected.
2. A rockburst-resistant bolt according to claim 1, wherein: the energy-absorbing resistor-increasing machine is characterized in that the energy-absorbing resistor-increasing machine (21) comprises an energy-absorbing part (22) and a resistor-increasing part (23), the energy-absorbing part (22) and the resistor-increasing part (23) are integrally formed, and the energy-absorbing part (22) is located on the rod body (11) close to one side of the wedge body (12).
3. A rockburst-resistant bolt according to claim 1, wherein: the energy-absorbing resistor (21) is in contact with the tray (31).
4. A rockburst-resistant bolt according to claim 1, wherein: coupling assembling (3) still include nut (32), nut (32) with tray (31) integrated into one piece, just nut (32) cover is located the outside of energy-absorbing resistor (21), nut (32) with energy-absorbing resistor (21) threaded connection that increases.
5. A rockburst-resistant bolt according to claim 1, wherein: the rod body (11) is made of a high-strength steel material, and the energy-absorbing resistor (21) is made of an easily deformable metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911181282.9A CN110778348A (en) | 2019-11-27 | 2019-11-27 | Rock burst resistant anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911181282.9A CN110778348A (en) | 2019-11-27 | 2019-11-27 | Rock burst resistant anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110778348A true CN110778348A (en) | 2020-02-11 |
Family
ID=69392799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911181282.9A Pending CN110778348A (en) | 2019-11-27 | 2019-11-27 | Rock burst resistant anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110778348A (en) |
-
2019
- 2019-11-27 CN CN201911181282.9A patent/CN110778348A/en active Pending
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