CN217028973U - Vacuum type energy-absorbing anchor rod system - Google Patents
Vacuum type energy-absorbing anchor rod system Download PDFInfo
- Publication number
- CN217028973U CN217028973U CN202221016854.5U CN202221016854U CN217028973U CN 217028973 U CN217028973 U CN 217028973U CN 202221016854 U CN202221016854 U CN 202221016854U CN 217028973 U CN217028973 U CN 217028973U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- anchor rod
- energy
- plate
- 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
Links
- 239000011435 rock Substances 0.000 abstract description 42
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 239000000872 buffer Substances 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a vacuum energy-absorbing anchor rod system which comprises a cylinder, wherein the cylinder is of a cylindrical structure, a circular rib plate with a central hole is radially arranged in the cylinder, a piston assembly penetrates through the cylinder to reach the circular rib plate of the cylinder, an outer protecting plate is fixed with the outer end of the cylinder through a protecting plate screw, an inner protecting plate penetrates through the piston assembly and is fixed with the inner end of the cylinder through the protecting plate screw, and one end, far away from the circular rib plate, of the piston assembly is in threaded connection with an anchor rod through a connecting sleeve. The anchor rod system provided by the utility model utilizes the combined action of vacuum negative pressure and spring compression to provide support resistance, simultaneously consumes rock burst deformation energy, weakens the deformation speed of surrounding rocks, effectively buffers the instantaneous large deformation of the surrounding rocks, and has a good function of preventing and treating rock burst sudden change deformation. Meanwhile, the anchor rod system can perform secondary air supply and reinforcement through the air valve, and has the advantages of being green, economical, environment-friendly, convenient, energy-saving and efficient.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering equipment, and particularly relates to a vacuum type energy absorption anchor rod system.
Background
With the continuous development of underground space, tunnel engineering construction faces more opportunities and more serious challenges, such as the problem of rock burst of hard rock tunnel under high ground stress, which is an important research topic.
The rock burst is a phenomenon that energy is suddenly released in the process of excavating a tunnel in a hard complete or more complete rock mass in a high ground stress area to cause the rock on the wall of the tunnel to suddenly catapult and damage. Excavating the cavern, removing radial constraint, suddenly increasing the hoop stress, and accumulating energy. Under the action of concentrated stress, sudden brittle failure is generated, so that the rock mass is separated from a matrix and is suddenly ejected towards the direction of the sky, and the rock mass undergoes the gradual failure process of rapid splitting, shearing and folding and ejection. The rock burst hazard is huge, and can seriously threaten the life safety of constructors and the safety of equipment. Therefore, for the rock burst problem under high ground stress, prevention measures should be taken in advance, and prevention should be mainly taken as the purpose.
The researchers have made many studies on the prevention and treatment of rockburst disasters. Wherein, the adoption of anchor bolt support is a powerful measure. However, the rock burst has burst property and high energy, and the common anchor rod has insufficient bearing capacity and insufficient extension amount and is easy to break, thereby losing the support effect. The general principle of tunnel wall rock support is to allow deformation of the wall rock, but only limited deformation is possible. Therefore, a new pressure-relief energy-absorbing anchor rod capable of solving the above problems is urgently needed. On the premise that the rod body ensures the safety support strength and the construction cost is reasonable, the surrounding rock is allowed to generate limited deformation to consume, absorb or remove rock burst energy, the influence of rock burst disasters is weakened, and the safety and the stability of the surrounding rock of the cavern are further guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a vacuum energy-absorbing anchor rod system, which solves the problems of complex structure, insufficient extension, poor energy-absorbing effect and the like of the conventional energy-absorbing anchor rod.
The technical scheme adopted by the utility model is as follows: vacuum type energy-absorbing stock system, including the cylinder, the cylinder is the tubular structure, and its inside is along radially being provided with the foraminiferous circular floor in center, and piston assembly penetrates the circular floor department that the cylinder reachd the cylinder, and it is fixed with the outer end of cylinder that the outer casing passes through the backplate screw, and it is fixed that the inner casing passes through the piston assembly and passes through the inner of backplate screw and cylinder, and the one end that circular floor was kept away from to piston assembly passes through connecting sleeve and stock threaded connection.
The utility model is also characterized in that:
the piston assembly comprises a piston rod, an outer piston nut, an outer piston cover plate, a W-shaped rubber ring, an inner piston cover plate, an inner piston nut and a spring are sequentially penetrated through the piston rod, the outer piston nut and the inner piston nut are screwed up, and the outer piston cover plate, the W-shaped rubber ring and the inner piston cover plate are fixed at one end, close to the circular rib plate, of the piston rod.
An air valve is welded at the central hole of the circular rib plate of the air cylinder.
Two side edges of the axial section of the W-shaped rubber ring are W-shaped.
The utility model has the beneficial effects that:
1. the anchor rod system meets the requirement of supporting strength, and simultaneously, the spring is compressed and the air cavity negative pressure acts together, is matched with each other and is restrained doubly, so that the elongation of the anchor rod is increased, the deformation energy of the surrounding rock is absorbed and dissipated, the effects of absorbing energy, releasing pressure and dissipating the deformation energy of the surrounding rock can be exerted to the maximum extent, the deformation speed is further weakened, the damage of rock burst is weakened, and the safety of the supporting environment is guaranteed. The buffer can play an effective role in buffering and preventing sudden disasters such as tunnel rock burst, coal mine rock burst and the like;
2. the bolting system can provide a constant restraining force and a limited variable elongation to mitigate sudden deformation of the surrounding rock. When the surrounding rock generates larger impact load or suddenly deforms, the large-diameter cylinder restrains the deformation of the surrounding rock to the maximum extent. The air cylinder slides to the free face, the W-shaped rubber ring slides to increase the negative pressure of the air cavity, and meanwhile, the spring is compressed to enable the air cylinder to continuously keep an energy absorption state, so that the air cylinder is ensured to move slowly, the anchor rod is ensured not to lose efficacy instantly in a limit stress state, and the function of preventing and treating sudden deformation is good;
3. the anchor rod system takes the negative pressure of the air cylinder and the compression of the spring as a core pressure relief and energy absorption device, and is more green, economic, environment-friendly, convenient, energy-saving and effective.
Drawings
FIG. 1 is a schematic structural view of a vacuum energy absorbing anchor system of the present invention;
FIG. 2 is a schematic view of the connection of the piston assembly in the vacuum energy absorbing anchor system of the present invention;
fig. 3 is a detailed construction schematic diagram of the vacuum energy-absorbing anchor rod system of the present invention.
In the figure, 1, a guard plate screw, 2, an outer guard plate, 3, a cylinder, 4, an inner guard plate, 5, a piston rod, 6, a connecting sleeve, 7, an anchor rod, 8, an outer piston nut, 9, an outer piston cover plate, 10, a W-shaped rubber ring, 11, an inner piston cover plate, 12, a spring, 13, an inner piston nut and 14, an air valve.
Detailed Description
The utility model is described in detail below with reference to the drawings and the detailed description.
The utility model provides a vacuum energy-absorbing anchor rod system which is structurally shown in figures 1-3 and comprises a guard plate screw 1, an outer guard plate 2, a cylinder 3, an inner guard plate 4, a piston assembly, a connecting sleeve 6, an anchor rod 7 and an air valve 14.
As shown in fig. 1 and 3, the cylinder 3 is a cylindrical structure, a circular rib plate with a hole at the center is radially arranged in the cylinder 3, the axial section of the cylinder 3 is H-shaped, and an air valve 14 is welded at the center hole of the circular rib plate of the cylinder 3.
A piston assembly is arranged on one side of the inner circular rib plate of the cylinder 3, and as shown in fig. 2 and 3, the piston assembly comprises a piston rod 5, an outer piston nut 8, an outer piston cover plate 9, a W-shaped rubber ring 10, an inner piston cover plate 11, a spring 12 and an inner piston nut 13. Two sides of the axial section of the W-shaped rubber ring 10 are W-shaped. And sequentially penetrating an outer piston nut 8, an outer piston cover plate 9, a W-shaped rubber ring 10, an inner piston cover plate 11, an inner piston nut 13 and a spring 12 through the piston rod 5, screwing the outer piston nut 8 and the inner piston nut 13, and fixing the outer piston cover plate 9, the W-shaped rubber ring 10 and the inner piston cover plate 11 at one end, close to the circular rib plate, of the piston rod 5. Thus, a complete set of piston components is formed.
The assembled piston assembly is placed into the cylinder 3. The inner guard plate 4 penetrates through the piston rod 5, and the inner guard plate 4 is fixed with the inner end of the air cylinder 3 through the guard plate screw 1. The piston rod 5 is screwed to the anchor 7 by a coupling sleeve 6 at the end of the piston rod 5 exposed from the cylinder 3.
When the air pump is installed, after the area between the circular rib plate and the outer piston cover plate 9 in the air cylinder 3 is vacuumized through the air pump, the air valve 14 is used for sealing, and the outer guard plate 2 is fixedly connected to the outer end of the air cylinder 3 through threads by the guard plate screw 1.
The large-diameter cylinder 3 increases the contact action area of the outer anchoring section and the surrounding rock, and improves the effect of preventing and treating rock burst. The outer guard plate 2 has the function of protecting the air valve 14, and meanwhile, the outer guard plate 2 can be matched with the air valve 14 to perform secondary air supplement and exhaust reinforcement functions. The inner guard plate 4 has the function of protecting the piston assembly in the cylinder and provides the function of limiting the anchor rod.
The working principle is as follows: when the surrounding rock near the tunnel wall is rockburst, the surrounding rock deforms to drive the cylinder 3 to move outwards, the piston rod 5 is kept still, at the moment, the negative pressure of the air cavity is increased, and meanwhile, the spring 12 is compressed, and supporting resistance is provided under the combined action. The deformation of the surrounding rock is energy-consumed by sliding the W-shaped rubber ring 10 in the cylinder 3 and pressing the spring 12. The compression of the spring 12 and the negative pressure of the air cavity of the cylinder 3 are increased, so that the rock burst energy is consumed, and the deformation speed of surrounding rocks is weakened. The limited deformation of the inner guard plate 4 further restricts the ejection of the surrounding rock of the tunnel wall. Thereby achieving the purposes of allowing the surrounding rock to carry out limited deformation, weakening the damage of rock burst or preventing the occurrence of rock burst disasters and maintaining the stability of the tunnel surrounding rock.
The following is a detailed description of a specific embodiment.
The vacuum energy-absorbing anchor rod system of the embodiment is implemented according to the following steps:
step 1: drilling an anchoring hole, and the concrete process is as follows:
step 1.1: adopting a mechanical drilling mode to drill holes at the designed hole positions of the support, and reaming the outer anchor head section;
step 1.2: checking the hole forming condition, and secondarily crushing the sharp corners of the abnormally raised gravels in the anchoring holes to prevent local stress concentration in the subsequent use process;
step 1.3: and impurities and rock fragments in the hole are cleaned, subsequent stress concentration is avoided, or the friction between the anchor rod and the rock mass is reduced, and the supporting effect is weakened.
Step 2: the anchor rod installation, the concrete process is:
step 2.1: installing a resin anchoring agent, feeding the resin anchoring agent into an anchor rod hole, and slowly pushing the resin anchoring agent into the fundus by using an anchor rod;
step 2.2: and stirring the resin anchoring agent and pushing the anchor rod into the hole bottom while stirring.
And step 3: air extraction anchoring
Step 3.1: after the resin anchoring agent reaches the anchoring strength, pumping the gas in the cylinder by using an air pump to form negative pressure so as to provide external anchoring force;
step 3.2: the air cylinder is hermetically sealed through an air valve;
step 3.3: the outer guard plate is fixedly connected with the outer end of the cylinder through the guard plate screw.
Claims (4)
1. Vacuum type energy-absorbing stock system, its characterized in that includes cylinder (3), cylinder (3) are the tubular structure, and its inside is along radially being provided with the foraminiferous circular ribbed plate in center, and piston assembly penetrates cylinder (3) reachs the circular ribbed plate department of cylinder (3), outer casing (2) through backplate screw (1) with the outer end of cylinder (3) is fixed, and inner casing (4) pass piston assembly pass through backplate screw (1) with the inner of cylinder (3) is fixed, piston assembly keeps away from circular ribbed plate's one end is passed through connecting sleeve (6) and stock (7) threaded connection.
2. The vacuum energy-absorbing anchor rod system according to claim 1, wherein the piston assembly comprises a piston rod (5), an outer piston nut (8), an outer piston cover plate (9), a W-shaped rubber ring (10), an inner piston cover plate (11), an inner piston nut (13) and a spring (12) sequentially penetrate through the piston rod (5), the outer piston nut (8) and the inner piston nut (13) are screwed down, and the outer piston cover plate (9), the W-shaped rubber ring (10) and the inner piston cover plate (11) are fixed at one end, close to the circular rib plate, of the piston rod (5).
3. The vacuum energy absorbing anchor system according to claim 1, wherein a gas valve (14) is welded at the center hole of the circular rib plate of the cylinder (3).
4. Vacuum energy absorbing anchor system according to claim 2, characterised in that the two sides of the axial cross section of the W-shaped rubber ring (10) are W-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221016854.5U CN217028973U (en) | 2022-04-28 | 2022-04-28 | Vacuum type energy-absorbing anchor rod system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221016854.5U CN217028973U (en) | 2022-04-28 | 2022-04-28 | Vacuum type energy-absorbing anchor rod system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217028973U true CN217028973U (en) | 2022-07-22 |
Family
ID=82419310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221016854.5U Expired - Fee Related CN217028973U (en) | 2022-04-28 | 2022-04-28 | Vacuum type energy-absorbing anchor rod system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217028973U (en) |
-
2022
- 2022-04-28 CN CN202221016854.5U patent/CN217028973U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204357467U (en) | Scalable internal-injection type secondary anchoring type anchor pole | |
| CN108868856B (en) | Energy-absorbing anchoring method of high-impact-resistant large-deformation energy-absorbing anchoring tray assembly | |
| CN103573279A (en) | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof | |
| CN203669901U (en) | Mining telescopic energy absorption and scour prevention viscous damping anchor rod | |
| CN105736023A (en) | Large-deformation energy-absorption anchor rod | |
| CN109026105A (en) | The anchor rod component and its method for protecting support of coal mine roadway buffering surrouding rock deformation | |
| CN203296794U (en) | Yielding extensible fiber reinforced plastic anchor rod | |
| CN113074007B (en) | Anti-impact energy absorber for hydraulic support | |
| CN110130953A (en) | A kind of compound erosion control energy absorption device | |
| CN210396775U (en) | Yielding anchor rod capable of self-recovering deformation | |
| CN110925001B (en) | Buffer protection device for preventing anchor cable from being ejected due to failure | |
| CN217028973U (en) | Vacuum type energy-absorbing anchor rod system | |
| CN208793023U (en) | Anti- HI high impact large deformation energy-absorbing anchoring tray component | |
| CN109057843B (en) | High-elongation impact-resistant anchor rod of anchoring section and anchoring method thereof | |
| CN215292549U (en) | Energy-absorbing anchor rod suitable for soft rock large deformation and high stress geological tunnel | |
| CN217481318U (en) | A bore anchor and annotate integration stock of unloading for broken country rock control | |
| CN107725088B (en) | Rock burst resistance and large-deformation wing type splitting energy-absorbing anchor rod and structure | |
| CN215673354U (en) | Novel damping device for power head of rotary drilling rig | |
| CN212272261U (en) | Self-advancing hollow grouting resin anchor rod | |
| CN108590721A (en) | A kind of adaptively release can anchor pole | |
| CN217761051U (en) | Novel energy-absorbing anchor rod device of high damping rubber | |
| CN103982211A (en) | High-strength large-deformation piston-type resistance-increasing anchor rod | |
| CN208267886U (en) | A kind of adaptively release can anchor pole | |
| CN217129570U (en) | Novel pressure-relief energy-absorbing anchor rod | |
| CN114517702A (en) | Circulating type energy-absorbing yielding large-deformation anchoring device and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220722 |