CN106979028B - Flexible pressure-relief anchor bolt supporting device - Google Patents
Flexible pressure-relief anchor bolt supporting device Download PDFInfo
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- CN106979028B CN106979028B CN201710361381.XA CN201710361381A CN106979028B CN 106979028 B CN106979028 B CN 106979028B CN 201710361381 A CN201710361381 A CN 201710361381A CN 106979028 B CN106979028 B CN 106979028B
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- 230000006835 compression Effects 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims description 32
- 239000000835 fiber Substances 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 11
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 7
- 239000004800 polyvinyl chloride Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 238000007405 data analysis Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 18
- 239000002689 soil Substances 0.000 abstract description 7
- 239000003245 coal Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 239000004567 concrete Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005507 spraying Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002435 tendon Anatomy 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The embodiment of the invention discloses a flexible pressure-relief anchor bolt supporting device, which relates to a roadway supporting device, and can effectively resist the impact pressure of stratum so as to better strengthen surrounding rock. The device includes wall anchor hole, still includes: the device comprises a rod body, a sealing plug, a fastening nut, a first tray, a second tray, a tail stop block and a compression spring. The invention is suitable for the field of underground chamber construction support of side slopes, rock and soil deep foundation pits and the like, tunnels, coal mines, stopes and the like.
Description
Technical Field
The invention relates to a roadway support device, in particular to a flexible pressure-relief anchor bolt support device.
Background
The anchor rod is the most basic component part of roadway support in contemporary coal mines, and the surrounding rock of the roadway is bound together, so that the surrounding rock supports itself. The anchor rod is used as a tension member penetrating into the stratum, one end of the anchor rod is connected with an engineering structure, the other end of the anchor rod penetrates into the stratum, the whole anchor rod is divided into a free section and an anchoring section, and the free section is used for transmitting the tension at the head of the anchor rod to the area of an anchoring body and has the function of applying prestress to the anchor rod; the anchoring section refers to an area where the cement paste bonds the prestressed tendons with the soil layer, and has the functions of increasing the bonding friction effect of the anchoring body and the soil layer, increasing the bearing effect of the anchoring body, transmitting the tensile force of the free section to the deep part of the soil body and reinforcing surrounding rock in a roadway well.
However, the existing anchor bolt support generally adopts rigid support, and is to reinforce surrounding rock by means of self prestress or bearing capacity, once the stratum pressure is overlarge, the bearing capacity of the anchor bolt cannot bear the stratum impact pressure at all under the impact of the stratum pressure, and the anchor bolt can be separated from the surrounding rock, so that the surrounding rock collapses, and an irresistible safety accident occurs.
Disclosure of Invention
Therefore, the embodiment of the invention provides the flexible pressure-relief anchor bolt supporting device which is simple in structure, and can effectively resist the impact pressure of a stratum by adopting an active pressure yielding mode so as to better strengthen surrounding rock.
In a first aspect, an embodiment of the present invention provides a flexible pressure-relieving anchor support device, including a wall anchoring hole, further including: the rod body, body of rod one end anchor is in the wall body anchor hole, be provided with elastic buffer part on the body of rod other end axial.
With reference to the first aspect, in a first implementation manner of the first aspect, the elastic buffering component is a compression spring, and the device further includes: the sealing plug is sleeved on the rod body, a part of the sealing plug is in matched sealing connection with the orifice of the anchoring hole, a first through hole is formed in the first tray, the first tray is sleeved on the rod body through the through hole and is in matched sealing connection with the part of the sealing plug exposed out of the anchoring hole, the fastening nut is sleeved on the rod body and presses against the tray to fasten the tray on the wall body at the anchoring hole, a second through hole is formed in the second tray, the second tray is fixedly connected to the tail of the rod body through the second through hole, the compression spring is fixed between the first tray and the second tray, and the tail stopper is fixedly connected to the tail of the rod body and is in contact with the second tray.
With reference to the first aspect, in a second implementation manner of the first aspect, the rod body is further provided with an external thread, a drill bit is further arranged at the front end of the rod body, the drill bit is set to be a twist drill, the tail of the rod body is set to be a hexagonal body and is used for being installed in cooperation with an electric drill clamping jaw, and a through hole is further formed in a section of the rod body, which is located in the wall anchoring hole.
With reference to the first aspect and the first implementation manner of the first aspect, in a third implementation manner of the first aspect, a first threaded hole is provided on the first tray, the first tray is in a truncated cone shape or a rectangular shape, the first tray includes a first bottom surface, and a first groove matched with the end shape of the compression spring is provided on the first bottom surface, so as to firmly fix the compression spring;
the tray also comprises a second bottom surface, a disk-shaped groove is arranged on the second bottom surface, and a PVC (polyvinyl chloride) sucker is stuck on the disk-shaped groove;
the second tray is provided with a second threaded through hole and comprises a third bottom surface and a fourth bottom surface, an end stop groove is formed in the third bottom surface, and a sixth groove is formed in the fourth bottom surface.
With reference to the first aspect and the first implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the first tray further includes: the first tray is rectangular, and a second groove, a third groove, a fourth groove and a fifth groove are respectively formed in the first bottom surface; the second groove and the second threaded through hole, the third groove and the third threaded through hole, the fourth groove and the fourth threaded through hole, and the fifth groove and the fifth threaded through hole are respectively coaxial;
the second bottom surface is also provided with a second disc-shaped groove, a third disc-shaped groove, a fourth disc-shaped groove and a fifth disc-shaped groove which are respectively coaxial with the second groove, the third groove, the fourth groove and the fifth groove,
the rod body further comprises a second rod body, a third rod body, a fourth rod body and a fifth rod body, compression springs are respectively fixed on the second rod body, the third rod body, the fourth rod body and the fifth rod body, penetrate through the second threaded through hole, the third threaded through hole, the fourth threaded through hole and the fifth threaded through hole and are inserted into the wall anchoring holes.
With reference to the first aspect, in a fifth implementation manner of the first aspect, the first through hole is a threaded through hole, the sealing plug is in a stepped cylindrical shape, and includes a first stepped cylindrical surface and a second stepped cylindrical surface, where the first stepped cylindrical surface and the second stepped cylindrical surface are provided with first threaded through holes for being matched and connected with the rod body, the first stepped cylindrical surface is matched with the wall anchoring hole in a close contact manner, and an external thread is further provided on the second stepped cylindrical surface, and is screwed and fixedly connected with the first through hole on the tray.
With reference to the first aspect, in a sixth implementation manner of the first aspect, the device further includes a sleeve, the sleeve is in a horn shape, a bottom end of the sleeve is clamped on the fastening nut, and an opening of the sleeve is freely arranged or connected with the electric dismounting device, so that pretightening force can be quickly applied to the anchor rod, and dismounting and maintenance of the anchor rod support device can be conveniently realized.
With reference to the first aspect, in a first implementation manner of the first aspect, in a seventh implementation manner of the first aspect, the shape of the compression spring is a cylinder shape or a truncated cone shape.
With reference to any one of the first aspect, the first, third, fourth, fifth, sixth or seventh implementation manners of the first aspect, in an eighth implementation manner of the first aspect, the device further includes a fiber bragg grating pressure sensor, a data processing system, a data monitoring system and a data analysis system, where the fiber bragg grating pressure sensor is fixedly installed on the rod body, the fiber bragg grating pressure sensor is used for monitoring a pressure on the rod body, when the pressure on the rod body changes, a reflected light wavelength of the fiber bragg grating pressure sensor changes, and the reflected light wavelength signal is sent to the data processing system connected with the reflected light wavelength signal, the data processing system filters and amplifies the optical wavelength signal and converts the filtered optical wavelength signal into an electrical signal to output the electrical signal to the data monitoring system, and the data monitoring system monitors the converted electrical signal in real time and outputs the signal to the data analysis system to perform signal analysis, so as to obtain a pressure change condition on the rod body through analysis of the electrical signal change, so as to monitor the stress condition of the rod body in real time.
The embodiment of the invention provides a flexible pressure-relief anchor rod supporting device, which is characterized in that an elastic buffer device is arranged on the anchor rod supporting device, an active pressure-yielding mode (namely, a fastening nut is invalid when reaching a limit bearing value, a first tray presses a spring to displace downwards) is adopted to buffer impact pressure, meanwhile, a compression spring absorbs a part of impact pressure and stores the impact pressure into self elastic potential energy, and then a pretightening force is further applied to an anchor rod, so that surrounding rock is better reinforced, and the impact pressure of a stratum is effectively resisted.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a flexible pressure-relieving anchor support device according to an embodiment of the present invention;
fig. 2 is a schematic view of the sealing plug in fig. 1;
FIG. 3 is a schematic view of the first tray of FIG. 1;
fig. 4 is a block diagram of a flexible pressure-relieving anchor support device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the flexible pressure-releasing anchor bolt supporting device is used in surrounding rock supporting engineering of a coal mine tunnel and comprises a reinforced concrete wall body anchoring hole 8, a rod body 1, a sealing plug 2, a fastening nut 3, a first tray 4, a second tray 5, a tail stop 6 and a compression spring 7;
in the embodiment, the rod body 1 is made of screw steel, the bearing capacity is high, a twist drill 12 is arranged at the front end of the screw steel and is used for directly drilling holes on the rock body 10, in a roadway support project, a metal net is hung on the surface of the exposed rock body to spray concrete to form a concrete spraying layer for carrying out primary support on surrounding rock, then the tail part of the rod body 1 is arranged in an electric drill clamping jaw, an anchoring hole 8 is drilled on the concrete spraying layer 9 until one end of the rod body 1 is penetrated into the rock body 10, and the anchor rod extrudes soil around the rod body in the screwing process so as to strengthen parameters of soil around the rod body;
in this embodiment, in order to prevent the concrete slurry from overflowing during the construction process, a sealing plug 2 is disposed at the opening of the anchoring hole 8, and the sealing plug 2 can also increase the friction between the rod body and the surrounding soil layer.
Referring to fig. 1 and 2, in this embodiment, the sealing plug 2 is a stepped cylindrical shape, and includes a first stepped cylindrical surface 21 and a second stepped cylindrical surface 22, a first threaded through hole 23 is formed on the first stepped cylindrical surface 21 and the second stepped cylindrical surface 22 for being connected with the rod body 1 in a matching manner, the first stepped cylindrical surface 21 is in close contact fit with the wall anchoring hole 8, and an external thread is further formed on the second stepped cylindrical surface 22;
in the embodiment, in the process of anchoring the rod body 1 into the wall body anchoring hole 8, the sealing plug 2 is sleeved on the opening section of the anchoring hole 8 of the rod body 1, the first stepped cylindrical surface 21 of the sealing plug 2 is fixed in the anchoring hole 8, and the second stepped cylindrical surface 22 exposed outside the concrete spraying layer 9 is matched and connected with the first tray 4 to enhance the friction force of the first tray 4;
referring to fig. 1 and 3, in this embodiment, the first tray 4 is in a shape of a circular truncated cone, a first threaded through hole 45 is formed on the first tray 4 and is used for matching with the shaft hole of the rod body 1, the first tray 4 includes a first bottom surface 41, a first groove 42 is formed on the first bottom surface 41 and is used for placing the high-strength compression spring 7, and one end of the compression spring 7 is firmly clamped in the first groove 42;
the first tray 4 further comprises a second bottom surface 43, a disk-shaped groove 44 is formed in the second bottom surface 43, and a PVC (polyvinyl chloride) sucker is adhered to the disk-shaped groove 44 and used for enabling the first tray 4 to be firmly adsorbed on the surface of the concrete spraying layer 9;
in this embodiment, on one hand, the first tray 4 is adsorbed and fixed on the concrete spraying layer 9 through a PVC (polyvinyl chloride) suction cup, on the other hand, the first tray 4 is tightly pressed on the concrete spraying layer 9 at the opening of the anchoring hole 8 by tightening the rod body 1 through the fastening nut 3, and the fastening nut 3 can transmit a certain pretightening force to the anchor rod in the process of locking the first tray 4.
In this embodiment, as an alternative embodiment, in order to ensure the bearing strength of the rod body 1, a through hole 11 is provided on a section of the rod body 1 extending into the anchoring hole 8, for inserting and arranging a reinforcing mesh, so that the anchor rod and the reinforced concrete wall are integrated together, thereby enhancing the strength of the whole anchor rod supporting structure.
Referring to fig. 1, in this embodiment, a second tray 5 is further disposed at the tail portion of the rod body 1, a second threaded through hole is disposed on the second tray 5, the second tray 5 includes a third bottom surface and a fourth bottom surface, and an end stop groove is formed on the third bottom surface, so that the tail stop 6 is embedded and fixed in the end stop groove;
a sixth groove is provided on the fourth bottom surface for fixedly placing the compression spring 7.
In this embodiment, a compression spring 7 is disposed between the second tray 5 and the first tray 4, the compression spring 7 is in a shape of a cylinder, a truncated cone, a middle convex shape or a middle concave shape, the compression spring 7 of the compression spring 7 is sleeved on the rod body 1, two ends of the compression spring 7 are respectively fixed in the first groove 42 and the sixth groove, and the compression spring 7 is used for buffering and storing part of stratum impact pressure so as to effectively resist stratum impact pressure and better strengthen surrounding rock.
Referring to fig. 1, in the present embodiment, a tail stopper 6 is fixedly installed at the left side of the second tray 5 for restricting the position of the second tray 5.
In this embodiment, as an alternative embodiment, in order to enhance the effect of the device against the formation impact pressure, the supporting anchor rods in this embodiment are organically combined, and three or four groups of rod bodies 1 and parts mounted on the rod bodies 1 are integrally added, so that the rod bodies are used as a set of integral supporting device, so that the effect of the compression spring against the formation impact pressure is enhanced, and the specific implementation manner is as follows:
in this embodiment, the first tray further includes: the first tray is rectangular, and a second groove, a third groove, a fourth groove and a fifth groove are respectively formed in the first bottom surface; the second groove and the second threaded through hole, the third groove and the third threaded through hole, the fourth groove and the fourth threaded through hole, and the fifth groove and the fifth threaded through hole are respectively coaxial;
the second bottom surface is also provided with a second disc-shaped groove, a third disc-shaped groove, a fourth disc-shaped groove and a fifth disc-shaped groove which are respectively coaxial with the second groove, the third groove, the fourth groove and the fifth groove,
the rod body further comprises a second rod body, a third rod body, a fourth rod body and a fifth rod body, compression springs are respectively fixed on the second rod body, the third rod body, the fourth rod body and the fifth rod body, and penetrate through the second threaded through hole, the third threaded through hole, the fourth threaded through hole and the fifth threaded through hole and are inserted into the wall anchoring hole;
in this embodiment, the installation relationship of the remaining parts on the rod body is similar to that of the previous embodiment, and will not be described herein.
In this embodiment, as an optional embodiment, the device further includes a sleeve, the sleeve is horn-shaped, the bottom end of the sleeve is clamped on the fastening nut 3, and the opening of the sleeve is freely arranged or connected with the electric dismounting device, so that a pretightening force can be rapidly applied to the anchor rod, and dismounting and maintenance of the anchor rod support device can be conveniently realized.
Referring to fig. 1 and 4, in this embodiment, as an optional embodiment, the apparatus further includes, a fiber bragg grating pressure sensor 13, a data processing system, a data monitoring system, and a data analysis system, where the fiber bragg grating pressure sensor 13 is fixedly installed on the rod body 1 and is used to monitor the stress condition of the rod body, when the pressure on the rod body changes, the wavelength of reflected light of the fiber bragg grating pressure sensor changes, and the reflected light wavelength signal is transmitted to the data processing system connected with the fiber bragg grating pressure sensor, the data processing system filters and amplifies the light wavelength signal and converts the filtered light wavelength signal into an electrical signal, and outputs the electrical signal to the data monitoring system, and the data monitoring system monitors the converted electrical signal in real time and outputs the signal to the data analysis system for signal analysis, so as to obtain the pressure change condition on the rod body by analyzing the electrical signal change, so as to monitor the stress condition of the rod body in real time;
in the embodiment, in the application process of the supporting anchor rod, the stress condition data of the rod body 1 is collected in real time according to the fiber bragg grating type pressure sensor 13 on the supporting anchor rod, so that the stress condition of the rod body 1 is monitored in real time, and when the data is found to display that the stress of the rod body 1 is obviously increased, a responsible person in the related production is notified, so that the organization of the responsible person can evacuate staff in time, and the occurrence of safety accidents can be prevented;
in the flexible pressure-relief anchor bolt supporting device, when stratum impact pressure is generated, the impact pressure can act on the first tray 4, load is transmitted to the rod body 1 through the first tray 4, and the rod body 1 resists part of the impact pressure through the strength of the rod body; when the impact pressure is increased to a certain value suddenly, the top of the surrounding rock sinks, the fastening nut 3 for fixing the first tray 4 reaches the ultimate bearing value and fails, the first tray 4 can press the compression spring 7 to displace downwards under the action of the impact pressure, the effect of active compression is achieved, meanwhile, the compression spring 7 absorbs part of the impact pressure and stores the impact pressure as self elastic potential energy, and further pretightening force is applied to the anchor rod body 1, so that the surrounding rock is better reinforced;
it is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (6)
1. A flexible pressure-relieving anchor support device comprising a wall anchoring hole, characterized in that it further comprises: the rod body is anchored in the wall anchoring hole at one end, and an elastic buffer part is axially arranged at the other end of the rod body;
a through hole is arranged on a section of the rod body extending into the wall anchoring hole and used for inserting and arranging a reinforcing mesh so that the anchor rod and the reinforced concrete wall are integrated;
the elastic buffer member is a compression spring, the device further comprising: the sealing plug is sleeved on the rod body, one part of the sealing plug is in matched sealing connection with the orifice of the anchoring hole, the first tray is provided with a first through hole,
the first tray is sleeved on the rod body through the through hole and is in matched and sealed connection with the part of the sealing plug exposed out of the anchoring hole, the fastening nut is sleeved on the rod body and pressed against the tray to fasten the tray on a wall body at the anchoring hole, the second tray is provided with a second through hole, the second tray is fixedly connected to the tail part of the rod body through the second through hole, the compression spring is fixed between the first tray and the second tray, and the tail stop block is fixedly connected to the tail part of the rod body and is in contact with the second tray;
the first through hole is a threaded through hole, the sealing plug is in a stepped cylindrical shape and comprises a first stepped cylindrical surface and a second stepped cylindrical surface, the first stepped cylindrical surface and the second stepped cylindrical surface are provided with first threaded through holes which are used for being matched and connected with the rod body, the first stepped cylindrical surface is in close contact and matched with the wall anchoring hole, the second stepped cylindrical surface is also provided with external threads which are screwed and fixedly connected with the first through hole on the tray;
the device also comprises a fiber bragg grating pressure sensor, a data processing system, a data monitoring system and a data analysis system, wherein the fiber bragg grating pressure sensor is fixedly arranged on the rod body and is used for monitoring the pressure on the rod body;
when the pressure on the rod body changes, the wavelength of the reflected light of the fiber bragg grating type pressure sensor changes, and the wavelength signal of the reflected light is transmitted to a data processing system connected with the fiber bragg grating type pressure sensor;
the data processing system filters, amplifies and converts the optical wavelength signals into electric signals and outputs the electric signals to the data monitoring system;
the data monitoring system monitors the converted electric signals in real time, outputs the signals to the data analysis system for signal analysis, and obtains the condition of pressure change on the rod body by analyzing the electric signal change so as to monitor the stress condition of the rod body in real time.
2. The flexible pressure-relief anchor support device according to claim 1, wherein the rod body is further provided with external threads, the front end of the rod body is further provided with a drill bit, the drill bit is a twist drill, the tail of the rod body is a hexagonal prism, and the rod body and a section positioned in the wall body anchoring hole are further provided with through holes.
3. The flexible pressure-relieving anchor support device according to claim 1, wherein the first tray is provided with a first threaded hole, is in a truncated cone shape or a rectangular shape, comprises a first bottom surface, and is provided with a first groove matched with the end shape of the compression spring;
the first tray further comprises a second bottom surface, a disc-shaped groove is formed in the second bottom surface, and a polyvinyl chloride sucker is adhered to the disc-shaped groove;
the second tray is provided with a second threaded through hole and comprises a third bottom surface and a fourth bottom surface, an end stop groove is formed in the third bottom surface, and a sixth groove is formed in the fourth bottom surface.
4. A flexible pressure-releasable anchor support device as claimed in claim 3, wherein the first tray further comprises: the first tray is rectangular, and a second groove, a third groove, a fourth groove and a fifth groove are respectively formed in the first bottom surface; the second groove and the second threaded through hole, the third groove and the third threaded through hole, the fourth groove and the fourth threaded through hole, and the fifth groove and the fifth threaded through hole are respectively coaxial;
the second bottom surface is also provided with a second disc-shaped groove, a third disc-shaped groove, a fourth disc-shaped groove and a fifth disc-shaped groove which are respectively coaxial with the second groove, the third groove, the fourth groove and the fifth groove,
the rod body further comprises a second rod body, a third rod body, a fourth rod body and a fifth rod body, compression springs are respectively fixed on the second rod body, the third rod body, the fourth rod body and the fifth rod body, penetrate through the second threaded through hole, the third threaded through hole, the fourth threaded through hole and the fifth threaded through hole and are inserted into the wall anchoring holes.
5. The flexible pressure-relieving anchor support device of claim 1, further comprising a sleeve, wherein the sleeve is horn-shaped, the bottom end of the sleeve is clamped on the fastening nut, and the opening of the sleeve is freely arranged or connected with an electric dismounting device.
6. A flexible pressure-releasable anchor support device as claimed in claim 2, wherein the compression spring is cylindrical or frustoconical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361381.XA CN106979028B (en) | 2017-05-19 | 2017-05-19 | Flexible pressure-relief anchor bolt supporting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361381.XA CN106979028B (en) | 2017-05-19 | 2017-05-19 | Flexible pressure-relief anchor bolt supporting device |
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| CN106979028A CN106979028A (en) | 2017-07-25 |
| CN106979028B true CN106979028B (en) | 2023-09-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259495A (en) * | 2019-07-03 | 2019-09-20 | 中国矿业大学 | A kind of compound support method based on erosion control decompression anchor cable |
| CN112595481B (en) * | 2020-12-07 | 2021-10-19 | 华亭煤业集团有限责任公司 | Roadway energy-absorbing support analog simulation experiment device |
| CN113739983B (en) * | 2021-07-21 | 2024-01-12 | 安徽理工大学 | Pressure relief threshold detection device of self-discharging pressure formula stock |
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| CN207437106U (en) * | 2017-05-19 | 2018-06-01 | 中国矿业大学(北京) | A kind of flexibility can release anchor bar suspension device |
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| CN200996296Y (en) * | 2007-01-11 | 2007-12-26 | 中国矿业大学 | High-strength decompressing slip-casting rockbolt |
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| CN106321124A (en) * | 2016-11-20 | 2017-01-11 | 中国平煤神马能源化工集团有限责任公司 | Mine grouting anchor cable supporting method |
| CN207437106U (en) * | 2017-05-19 | 2018-06-01 | 中国矿业大学(北京) | A kind of flexibility can release anchor bar suspension device |
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