CN113586063A - Time-lag rock burst prevention and treatment device and prevention and treatment method - Google Patents
Time-lag rock burst prevention and treatment device and prevention and treatment method Download PDFInfo
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- CN113586063A CN113586063A CN202110859848.XA CN202110859848A CN113586063A CN 113586063 A CN113586063 A CN 113586063A CN 202110859848 A CN202110859848 A CN 202110859848A CN 113586063 A CN113586063 A CN 113586063A
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- 239000011435 rock Substances 0.000 title claims abstract description 93
- 230000002265 prevention Effects 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 158
- 238000005520 cutting process Methods 0.000 claims description 33
- 238000005507 spraying Methods 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 13
- 230000035939 shock Effects 0.000 claims description 13
- 238000009412 basement excavation Methods 0.000 claims description 7
- 239000002352 surface water Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000005641 tunneling Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
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- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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Abstract
The invention discloses a time-lag rock burst prevention and treatment device and method, relates to the field of rock mechanics, and mainly aims to rapidly reduce the risk of surrounding rock burst and improve the operation efficiency. The time-lag rock burst prevention and treatment device comprises a vehicle body, a position adjusting mechanism, an angle adjusting mechanism, a height adjusting mechanism, a driving part and a cutter head; the position adjusting mechanism is arranged on the vehicle body; the angle adjusting mechanism is connected with the position adjusting mechanism; the driving part is connected with the angle adjusting mechanism; the cutter head is connected with the driving part through a height adjusting mechanism; the driving part is used for driving the cutter head to rotate so as to cut the surrounding rock side wall; the angle adjusting mechanism is used for driving the cutter head to rotate relative to the vehicle body by a preset angle; the position adjusting mechanism is used for driving the cutter head to horizontally move along the direction vertical to the walking direction of the vehicle body; the height adjusting mechanism is used for adjusting the height of the cutter head relative to the vehicle body.
Description
Technical Field
The invention relates to the technical field of rock mechanics, in particular to a time-lag rock burst prevention and treatment device and a prevention and treatment method.
Background
With the continuous development of rock engineering such as mining engineering, hydraulic and hydroelectric construction, traffic tunnel construction and deep exploration in China towards the deep part of the crust, the ground stress gradually increases, and the rock burst disaster becomes more and more prominent. At present, deep rock engineering practices at home and abroad show that a large number of rock burst disasters do not occur at the moment of excavation, but occur within a large time span from hours to dozens of days after excavation, namely time-lag rock burst.
The time-lag type rock burst refers to rock burst which occurs under the action of external disturbance after stress is adjusted and balanced after excavation and unloading of a high-stress area of a deep-buried tunnel. In the process of underground engineering excavation in a high ground stress area, the stress redistribution of surrounding rocks enables the radial stress on the surface of the surrounding rocks to be unloaded, the hoop stress is loaded, strong hoop extrusion is formed, and when a large amount of elastic strain energy stored in a hard and brittle rock mass reaches the limit, a rock burst disaster happens. Research shows that stress can be transferred to the inner part by performing joint cutting treatment on the key part of the deep rock engineering, and meanwhile, weakening treatment is performed on surface surrounding rock, so that the stress condition of the surrounding rock is improved, and the rock burst risk is reduced. Rock burst statistical data of related domestic engineering show that 80% of time-lag rock bursts are excavated in the area 6-30 days after the time, and are spatially within a range of 80 meters from the tunnel face, so that pressure relief and joint cutting work must be completed in a short time and a large range.
However, the existing joint cutting processing method almost completely depends on operations of drilling holes on surrounding rocks in advance and then performing joint cutting or blasting pressure relief and the like, so that the construction process is complicated, the operation efficiency is low, and the time-lag rock burst prevention and control effect is reduced.
Disclosure of Invention
In view of this, the embodiment of the invention provides a time-lag rock burst prevention and treatment device and a time-lag rock burst prevention and treatment method, and mainly aims to shorten the pressure relief period of surrounding rocks, improve the operation efficiency and improve the time-lag rock burst prevention and treatment effect.
In order to achieve the above purpose, the embodiments of the present invention mainly provide the following technical solutions:
in one aspect, an embodiment of the present invention provides a time-lag rock burst prevention and treatment apparatus, including: the device comprises a travelling mechanism, a position adjusting mechanism, an angle adjusting mechanism, a height adjusting mechanism, a driving part and a cutter head;
the position adjusting mechanism is arranged on the travelling mechanism;
the angle adjusting mechanism is connected with the position adjusting mechanism;
the driving part is connected with the angle adjusting mechanism;
the cutter head is connected with the driving part through the height adjusting mechanism;
the driving part is used for driving the cutter head to rotate so as to cut the surrounding rock side wall; the angle adjusting mechanism is used for driving the cutter head to rotate relative to the travelling mechanism by a preset angle; the position adjusting mechanism is used for driving the cutter head to horizontally move along the direction vertical to the walking direction of the walking mechanism; the height adjusting mechanism is used for adjusting the height of the cutter head relative to the travelling mechanism.
Further, the time-lag type rock burst prevention and treatment device further comprises:
the spraying mechanism, the spraying mechanism set up in on the running gear, the spraying mechanism includes first shower nozzle and second shower nozzle, first shower nozzle is located the top of blade disc, be used for to the top surface water spray of blade disc, the second shower nozzle is located the bottom of blade disc, be used for to the bottom surface water spray of blade disc.
Furthermore, a moving space is arranged on the travelling mechanism, and the extending direction of the moving space is vertical to the travelling direction of the travelling mechanism;
the position adjusting mechanism is connected to the moving space and comprises a moving part, the moving part is connected with the angle adjusting mechanism, and the moving part can move along the extending direction of the moving space.
Further, the angle adjustment mechanism includes:
one side of the rotating seat is rotatably connected with the moving part, and the other side of the rotating seat is connected with the driving part;
the gear part comprises a gear and a motor which are connected, the gear is rotatably connected to the rotating seat, and the motor is used for driving the gear to rotate;
and the rack is connected with the moving part and meshed with the gear, so that the rotating seat rotates relative to the traveling mechanism.
Furthermore, the height adjusting mechanism comprises a connecting shaft, the connecting shaft is connected with the driving part, a plurality of connecting positions which are sequentially arranged along the length direction of the connecting shaft are arranged on the connecting shaft, and the connecting positions are used for connecting the cutter head; alternatively, the first and second electrodes may be,
the height adjusting mechanism comprises a telescopic shaft, one end of the telescopic shaft is connected with the driving part, and the other end of the telescopic shaft is connected with the cutter head; alternatively, the first and second electrodes may be,
the height adjusting mechanism comprises a telescopic shaft, one end of the telescopic shaft is connected with the driving part, the other end of the telescopic shaft is connected with the cutter head, and a plurality of connecting positions which are sequentially arranged along the length direction of the telescopic shaft are arranged on the telescopic shaft.
Further, the time-lag type rock burst prevention and treatment device further comprises:
the damping mechanism is used for damping the cutter head and comprises a first damping portion and a second damping portion, the first damping portion is arranged on the position adjusting mechanism, and the second damping portion is arranged on the travelling mechanism.
Further, the moving portion includes opposing first and second portions, the first portion being connected with the angle adjustment mechanism;
the first shock absorbing part includes a first elastic member connected between the first portion and the second portion, and the first portion is capable of moving up and down in the moving space by an elastic force of the first elastic member.
Further, the travelling mechanism comprises a body and wheels arranged at the bottom of the body;
the second damping portion includes a second elastic member connected between the body and the wheel.
Further, the position adjusting mechanism further comprises a rail arranged along the extending direction of the moving space, and the moving part is connected with the rail in a sliding mode.
On the other hand, the embodiment of the invention also provides a time-lag type rock burst prevention and treatment method, wherein the prevention and treatment method adopts the time-lag type rock burst prevention and treatment device, and the method comprises the following steps:
after the construction of a tunnel or a roadway driving working face is finished and before supporting work is carried out, the time-lag rock burst prevention device reaches a roadway excavation area, the height and the angle of a cutter head are respectively adjusted through a height adjusting mechanism and an angle adjusting mechanism, and the cutting operation of the surrounding rock side measuring is ready to be started;
starting the driving part and the position adjusting mechanism, and simultaneously, gradually reaching the joint cutting depth by the cutter head under the adjustment of the traveling mechanism, and continuously advancing forward, thereby forming a pressure relief joint cutting on the wall of the surrounding rock on one side of the tunnel or the roadway; for the surrounding rock of the roadway side wall on the same side, the height and the angle of the cutter head can be adjusted, so that the cutting angle and the cutting height can be adjusted to perform cutting for multiple times, and a pressure-relief crushing zone can be formed;
after the joint cutting operation is finished, the cutter disc exits from the pressure relief joint cutting, the driving part stops, and the cutter disc stops rotating;
and maintaining the time-lag rock burst prevention and control device to prepare for next joint cutting work.
By means of the technical scheme, the invention at least has the following beneficial effects:
according to the technical scheme provided by the embodiment of the invention, the vehicle-mounted large cutter head is adopted to cut the side wall of the surrounding rock, drilling holes are not required to be drilled in the surrounding rock in advance, the tunneling of a roadway at the front end is not influenced, the supporting work at the rear end is not delayed, the construction steps are saved, the construction process is simpler, the construction period is shortened, the operation efficiency is improved, and the time-lag rock burst prevention and control effect is improved. Moreover, through setting up angle adjustment mechanism and high adjustment mechanism, can adjust the blade disc for running gear's angle and height, can also adjust the diameter and the quantity of blade disc simultaneously to adjust the angle, height, the degree of depth and the quantity of release joint-cutting, and then realize in time adjusting the operating condition of blade disc according to the site work condition, use in a flexible way, weaken the country rock better, improve the atress condition of country rock better, further improved the prevention and cure effect of time lag rockburst, reduce the rockburst risk.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a time-lag rock burst prevention and treatment device provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an angle adjusting mechanism in a time-lag rock burst prevention and treatment device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a position adjusting mechanism in the time-lag rock burst prevention and treatment device according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present embodiment.
As shown in fig. 1, an embodiment of the present invention provides a time-lag type rock burst prevention device, which includes a traveling mechanism 1, a position adjustment mechanism 2, an angle adjustment mechanism 3, a height adjustment mechanism 4, a driving portion 5, and a cutter head 6; the position adjusting mechanism 2 is arranged on the travelling mechanism 1; the angle adjusting mechanism 3 is connected with the position adjusting mechanism 2; the driving part 5 is connected with the angle adjusting mechanism 3; the cutter head 6 is connected with the driving part 5 through the height adjusting mechanism 4; the driving part 5 is used for driving the cutter head 6 to rotate so as to cut the surrounding rock side wall, and specifically, the driving part 5 can be a speed reducing motor; the angle adjusting mechanism 3 is used for driving the cutter head 6 to rotate relative to the travelling mechanism 1 by a preset angle; the position adjusting mechanism 2 is used for driving the cutter head 6 to horizontally move along the direction vertical to the walking direction of the walking mechanism 1; the height adjusting mechanism 4 is used for adjusting the height of the cutter head 6 relative to the travelling mechanism 1.
It can be understood that, in the embodiment of the present invention, the position adjusting mechanism 2 can drive the cutter head 6 to horizontally move along the direction perpendicular to the traveling direction of the traveling mechanism 1, so that the cutter head 6 cuts the surrounding rock side wall and gradually reaches the depth of the cut, where it is to be noted that the depth of the cut depends on the diameter of the cutter head 6, the larger the diameter of the cutter head 6 is, the larger the depth of the cut is, the smaller the diameter of the cutter head 6 is, the smaller the depth of the cut is, and the diameter of the cutter head 6 can be appropriately adjusted according to the working condition, specifically, the diameter of the cutter head 6 may be preferably 1-10 m; moreover, one or more cutterheads 6 can be arranged, and a plurality of cutterheads 6 can be arranged in a mutually parallel stacking manner, so that one or more mutually parallel pressure relief kerfs can be formed in one-time kerfs, the prevention and treatment effect of time-lag rock burst is further improved, and particularly, the number of the cutterheads 6 can be 1-5; in addition, the travelling mechanism 1 and the rear-end equipment can adopt a detachable assembly mode, so that the time-lag rock burst prevention and control device and the rear-end equipment can be independently disassembled and assembled, and the universality is good.
It should be noted that the traveling mechanism 1 may be a vehicle-mounted chassis, a crawler-type chassis, a guide rail-type chassis, a support leg, or other similar traveling devices, or may be a traveling apparatus such as a tunnel boring machine, and the structural form of the traveling mechanism 1 may be selected according to the specific rock burst prevention and treatment construction situation, which is not limited in the embodiment of the present invention.
According to the technical scheme provided by the embodiment of the invention, the vehicle-mounted large cutter head 6 is adopted to cut the side wall of the surrounding rock, drilling holes are not required to be drilled in the surrounding rock in advance, the tunneling of a roadway at the front end is not influenced, the supporting work at the rear end is not delayed, the construction steps are saved, the construction process is simpler, the construction period is shortened, the operation efficiency is improved, and the time-lag rock burst prevention and control effect is improved. Moreover, through setting up angle adjustment mechanism 3 and high adjustment mechanism 4, can adjust the angle and the height of blade disc 6 for running gear 1, can also adjust the diameter and the quantity of blade disc 6 simultaneously to adjust the angle, height, the degree of depth and the quantity of release joint-cutting, and then realize in time adjusting the operating condition of blade disc 6 according to the site work condition, it is nimble to use, weaken the country rock better, improve the atress condition of country rock better, further improved the prevention and cure effect of time lag rockburst, reduce the rockburst risk.
In an alternative embodiment, referring to fig. 1, the time-lag rock burst prevention device may further include a spraying mechanism 7, the spraying mechanism 7 is disposed on the traveling mechanism 1, the spraying mechanism 7 includes a first spray head 71 and a second spray head 72, the first spray head 71 is located at the top of the cutter head 6 and is used for spraying water to the top surface of the cutter head 6, and the second spray head 72 is located at the bottom of the cutter head 6 and is used for spraying water to the bottom surface of the cutter head 6.
In the above embodiment, the spraying mechanism 7 is provided, and the first spray head 71 and the second spray head 72 of the spraying mechanism 7 can spray water to the top surface and the bottom surface of the cutter head 6 at the same time, so as to cool and remove dust for the cutter head 6, thereby ensuring normal slitting operation of the cutter head 6.
In the above embodiment, the spraying mechanism 7 may further include a water tank, a first water pipe 73 and a second water pipe 74, the first water pipe 73 communicates with the water tank and the first spray head 71, the second water pipe 74 communicates with the water tank and the second spray head 72, the water tank may be disposed on the traveling mechanism 1, the first water pipe 73 and the first spray head 71 may be disposed on the top of the cutter head 6, and the second water pipe 74 and the second spray head 72 may be disposed on the bottom of the cutter head 6. Further, when the number of the cutter deck 6 is plural, the first and second heads 71 and 72 are provided at the top and bottom of each cutter deck 6. It should be noted that the spraying mechanism 7 can be opened at the same time when the cutter head 6 starts to rotate, so as to timely perform cooling and dust removing operations on the cutter head 6.
In an alternative embodiment, referring to fig. 1 and 3, a moving space 11 may be disposed on the traveling mechanism 1, and the moving space 11 extends in a direction perpendicular to the traveling direction of the traveling mechanism 1; the position adjusting mechanism 2 is connected to the moving space 11, the position adjusting mechanism 2 includes a moving portion 21, the moving portion 21 is connected to the angle adjusting mechanism 3, and the moving portion 21 is movable in the extending direction of the moving space 11.
In the above embodiment, the moving space 11 is provided on the traveling mechanism 1, so that the position adjusting mechanism 2 can be disposed in the moving space 11, and horizontally move in the moving space 11 in a direction perpendicular to the traveling direction of the traveling mechanism 1, so as to drive the cutter head 6 to cut the surrounding rock side wall and gradually reach the depth of the cut seam. Specifically, the moving space 11 may be a space in a shape of a letter-raised transversely arranged along the traveling mechanism 1, and the top thereof penetrates the top surface of the traveling mechanism 1, so that the angle adjusting mechanism 3 located outside the moving space 11 is connected to the position adjusting mechanism 2 in the moving space 11.
In order to ensure the use reliability of the angle adjustment mechanism 3, in an alternative embodiment, referring to fig. 1 and 2, the angle adjustment mechanism 3 may include a rotating seat 31, one side of the rotating seat 31 is rotatably connected to the moving portion 21, the other side of the rotating seat 31 is connected to the driving portion 5, and the rotating seat 31 may serve as a base of the driving portion 5; a gear part including a gear 32 and a motor connected with each other, the gear 32 being rotatably connected to the rotary base 31, the motor being used for driving the gear 32 to rotate; and an arc-shaped rack 33, wherein the rack 33 is connected with the moving part 21, and the rack 33 is meshed with the gear 32 to enable the rotating seat 31 to rotate relative to the traveling mechanism 1.
In the above embodiment, the motor drives the gear 32 to rotate, and the gear 32 can move in a meshing manner with the rack 33 along the arc-shaped track of the rack 33, so as to drive the rotating seat 31 to rotate, and further drive the cutter head 6 to rotate; the rotation angle of the motor is controlled, namely the meshing length of the rack 33 and the gear 32 can be controlled, so that the rotation angle of the cutter head 6 is controlled, the structure is simple, and the use is reliable. Specifically, the rack may be integrally connected with the moving portion 21.
The height adjusting mechanism 4 may have various structural forms as long as the height of the height adjusting cutter head 6 relative to the traveling mechanism 1 can be adjusted, and in order to ensure the use reliability of the height adjusting mechanism 4, in an optional embodiment, the height adjusting mechanism 4 may include a connecting shaft, the connecting shaft is connected with the driving part 5, a plurality of connecting positions are arranged on the connecting shaft in sequence along the length direction of the connecting shaft, and the connecting positions are used for connecting the cutter head 6.
According to the above embodiment, when the height of the cutter head 6 is adjusted, the connecting position of the connecting cutter head 6 can be changed, so that the height adjustment of the cutter head 6 is realized. Specifically, the connection position may be a clamping position provided on the connection shaft, and the connection position may include an external spline, and an internal spline may be provided on an inner wall of the central hole of the cutter head 6, so as to realize spline connection between the cutter head 6 and the connection shaft.
Alternatively, the height adjusting mechanism 4 may include a telescopic shaft having one end connected to the driving part 5 and the other end connected to the cutter head 6. According to the embodiment, when the height of the cutter head 6 is adjusted, the telescopic length of the telescopic shaft can be adjusted, so that the height adjustment of the cutter head 6 is realized. Specifically, the telescopic shaft or the telescopic rod is a common technology in the prior art, and can be selected in the prior art when in use, so long as the connection strength is ensured, and the structure of the telescopic shaft or the telescopic rod is not described in detail here.
Alternatively, the height adjusting mechanism 4 may include the aforementioned telescopic shaft, one end of the telescopic shaft is connected to the driving portion 5, and the other end of the telescopic shaft is connected to the cutter head 6, and the telescopic shaft is provided with a plurality of the aforementioned connecting positions sequentially arranged along the length direction thereof. According to the embodiment, when the height of the cutter head 6 is adjusted, the telescopic length of the telescopic shaft can be adjusted, and meanwhile, the connecting position of the connecting cutter head 6 is changed, so that the height adjustment of the cutter head 6 is realized.
Because the road conditions in the tunnel (lane) is relatively poor usually, running gear 1 easily produces jolting vibration in the in-process of marcing, thereby produce the impact force to blade disc 6, this normal joint-cutting operation that easily influences blade disc 6 and go on the country rock curb plate, lead to blade disc 6 to damage even, in order to solve this technical problem, refer to figure 1, in an optional embodiment, this time lag type rockburst prevention and treatment device can also include damper, be used for the shock attenuation of blade disc 6, this damper includes first shock attenuation portion and second shock attenuation portion, first shock attenuation portion sets up on position control mechanism 2, the second shock attenuation portion sets up on running gear 1.
In the above embodiment, through setting up damper, and this damper's first shock attenuation portion sets up on position control mechanism 2, and second shock attenuation portion sets up on running gear 1, has realized when running gear 1 is in relatively poor road conditions, and first shock attenuation portion and second shock attenuation portion can coordinate simultaneously and carry out the shock attenuation to the impact force that produces cutter head 6 because of jolting vibration is fallen in the buffering, have guaranteed that cutter head 6 carries out normal joint-cutting operation to the country rock curb plate, avoid cutter head 6 to damage.
In an alternative embodiment, referring to fig. 1, the moving portion 21 may include a first portion 211 and a second portion 212 opposite to each other, the first portion 211 being connected to the angle adjustment mechanism 3; the first shock absorbing part includes a first elastic member 81, the first elastic member 81 is connected between the first portion 211 and the second portion 212, and the first portion 211 can move up and down in the moving space 11 by the elastic force of the first elastic member 81, thereby buffering the impact force generated to the cutter disc 6 due to the jounce vibration. Specifically, the first elastic member 81 may be a cylindrical spring, the number of the first elastic members 81 may be multiple, and the multiple first elastic members 81 may be arranged in a rectangular array.
In the above embodiment, the outer peripheral wall of the first portion 211 may be circumferentially provided with a boss, and when the first elastic member 81 is stretched to a certain extent, the boss can abut against the step surface of the moving space 11, so as to limit the damping range of the first elastic member, and further ensure the normal operation of the whole device.
In an alternative embodiment, referring to fig. 1, the running gear 1 includes a body 12 and wheels 13 disposed at the bottom of the body 12; the second damping part includes a second elastic member 82, the second elastic member 82 is connected between the body 12 and the wheel 13, and when the traveling mechanism 1 jounces, the body 12 can move up and down under the elastic force of the second elastic member 82, so that the impact force generated by the cutter head 6 due to jounce vibration is buffered. Specifically, the second elastic member 82 may be a plate spring.
In an alternative embodiment, referring to fig. 3, the position adjusting mechanism 2 may further include a rail 22 disposed along the extending direction of the moving space 11, and the moving portion 21 is slidably connected to the rail 22, so that the cutter head 6 is horizontally moved in a direction perpendicular to the traveling direction of the traveling mechanism 1. Specifically, the position adjustment mechanism 2 as a whole may be a ball screw slide table structure.
The embodiment of the invention also provides a time-lag rock burst prevention and treatment method, which adopts the time-lag rock burst prevention and treatment device, and the method comprises the following steps, and reference can be made to fig. 1 to 3.
And S1, after the construction of the tunneling working surface of the tunnel or the roadway is finished and before the support work is carried out, the time-lag rock burst prevention device reaches the latest roadway excavation area, the height and the angle of the cutter head 6 are respectively adjusted through the height adjusting mechanism 4 and the angle adjusting mechanism 3, and the cutting operation of the surrounding rock side measuring is ready to be started.
S2, starting the driving part 5 and the position adjusting mechanism 2, and meanwhile, gradually reaching the joint cutting depth by the cutter head 6 under the traveling adjustment of the traveling mechanism 1 and continuously advancing forward, thereby forming a pressure relief joint cutting on the wall of the surrounding rock on one side of the tunnel or roadway.
After the driving part 5 is started, the cutter head 6 rotates at a high speed, and meanwhile, the spraying mechanism 7 can be started to cool and remove dust for the cutter head 6. In addition, in the process that the cutterhead 6 cuts the wall of the surrounding rock on one side, the other side can be used as a safe escape passage, if the wall of the surrounding rock on two sides needs to be cut simultaneously, two or more time-lag rock burst prevention and control devices can work simultaneously, and it needs to be noted that the two or more time-lag rock burst prevention and control devices need to be arranged in a staggered mode in the tunneling direction, so that a pedestrian safety passage is reserved, and the occurrence of accidents that the cutterhead 6 hurts people is avoided.
In addition, for the surrounding rock of the roadway slope wall on the same side, the height and the angle of the cutter head 6 can be adjusted, so that the cutting angle and the cutting height can be adjusted to perform cutting for multiple times, and a pressure-relief crushing zone can be formed; thereby better preventing and treating time-lag type rock burst.
And S3, after the slitting operation is finished, the cutter head 6 is withdrawn from the pressure relief slitting, the driving part 5 is stopped, and the cutter head 6 stops rotating.
After the driving part 5 stops, the cutter head 6 can be adjusted to the central position of the travelling mechanism 1, meanwhile, the spraying mechanism 7 stops, and the time-lag rock burst prevention device can be integrally withdrawn from the tunneling roadway.
And S4, maintaining the time-lag rock burst prevention and control device, such as maintaining or replacing the cutter head 6, and preparing for next joint cutting work.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A time lag type rockburst prevention device, comprising: the device comprises a travelling mechanism, a position adjusting mechanism, an angle adjusting mechanism, a height adjusting mechanism, a driving part and a cutter head;
the position adjusting mechanism is arranged on the travelling mechanism;
the angle adjusting mechanism is connected with the position adjusting mechanism;
the driving part is connected with the angle adjusting mechanism;
the cutter head is connected with the driving part through the height adjusting mechanism;
the driving part is used for driving the cutter head to rotate so as to cut the surrounding rock side wall; the angle adjusting mechanism is used for driving the cutter head to rotate relative to the travelling mechanism by a preset angle; the position adjusting mechanism is used for driving the cutter head to horizontally move along the direction vertical to the walking direction of the walking mechanism; the height adjusting mechanism is used for adjusting the height of the cutter head relative to the travelling mechanism.
2. The time-lapse rock burst prevention device according to claim 1, further comprising:
the spraying mechanism, the spraying mechanism set up in on the running gear, the spraying mechanism includes first shower nozzle and second shower nozzle, first shower nozzle is located the top of blade disc, be used for to the top surface water spray of blade disc, the second shower nozzle is located the bottom of blade disc, be used for to the bottom surface water spray of blade disc.
3. The time-lapse rock burst prevention device according to claim 1,
a moving space is arranged on the travelling mechanism, and the extending direction of the moving space is vertical to the travelling direction of the travelling mechanism;
the position adjusting mechanism is connected to the moving space and comprises a moving part, the moving part is connected with the angle adjusting mechanism, and the moving part can move along the extending direction of the moving space.
4. The time-lapse rock burst prevention device according to claim 3, wherein the angle adjustment mechanism comprises:
one side of the rotating seat is rotatably connected with the moving part, and the other side of the rotating seat is connected with the driving part;
the gear part comprises a gear and a motor which are connected, the gear is rotatably connected to the rotating seat, and the motor is used for driving the gear to rotate;
and the rack is connected with the moving part and meshed with the gear, so that the rotating seat rotates relative to the traveling mechanism.
5. The time-lapse rock burst prevention device according to claim 1,
the height adjusting mechanism comprises a connecting shaft, the connecting shaft is connected with the driving part, a plurality of connecting positions which are sequentially arranged along the length direction of the connecting shaft are arranged on the connecting shaft, and the connecting positions are used for connecting the cutter head; alternatively, the first and second electrodes may be,
the height adjusting mechanism comprises a telescopic shaft, one end of the telescopic shaft is connected with the driving part, and the other end of the telescopic shaft is connected with the cutter head; alternatively, the first and second electrodes may be,
the height adjusting mechanism comprises a telescopic shaft, one end of the telescopic shaft is connected with the driving part, the other end of the telescopic shaft is connected with the cutter head, and a plurality of connecting positions which are sequentially arranged along the length direction of the telescopic shaft are arranged on the telescopic shaft.
6. The time-lapse rock burst prevention device according to claim 3, further comprising:
the damping mechanism is used for damping the cutter head and comprises a first damping portion and a second damping portion, the first damping portion is arranged on the position adjusting mechanism, and the second damping portion is arranged on the travelling mechanism.
7. The time-lapse rock burst prevention device according to claim 6,
the moving part comprises a first part and a second part which are opposite, and the first part is connected with the angle adjusting mechanism;
the first shock absorbing part includes a first elastic member connected between the first portion and the second portion, and the first portion is capable of moving up and down in the moving space by an elastic force of the first elastic member.
8. The time-lapse rock burst prevention device according to claim 6,
the walking mechanism comprises a body and wheels arranged at the bottom of the body;
the second damping portion includes a second elastic member connected between the body and the wheel.
9. A time-lapse rock burst prevention device according to claim 3,
the position adjusting mechanism further comprises a track arranged along the extending direction of the moving space, and the moving part is connected with the track in a sliding mode.
10. A time-lag type rockburst prevention and treatment method which adopts the time-lag type rockburst prevention and treatment device is characterized by comprising the following steps:
after the construction of a tunnel or a roadway driving working face is finished and before supporting work is carried out, the time-lag rock burst prevention device reaches a roadway excavation area, the height and the angle of a cutter head are respectively adjusted through a height adjusting mechanism and an angle adjusting mechanism, and the cutting operation of the surrounding rock side wall is ready to be started;
starting the driving part and the position adjusting mechanism, and simultaneously, gradually reaching the joint cutting depth by the cutter head under the adjustment of the traveling mechanism, and continuously advancing forward, thereby forming a pressure relief joint cutting on the wall of the surrounding rock on one side of the tunnel or the roadway; for the surrounding rock of the roadway side wall on the same side, the height and the angle of the cutter head can be adjusted, so that the cutting angle and the cutting height can be adjusted to perform cutting for multiple times, and a pressure-relief crushing zone can be formed;
after the joint cutting operation is finished, the cutter disc exits from the pressure relief joint cutting, the driving part stops, and the cutter disc stops rotating;
and maintaining the time-lag rock burst prevention and control device to prepare for next joint cutting work.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434711A (en) * | 2022-08-16 | 2022-12-06 | 西南交通大学 | Intelligent monitoring and active control robot for rock burst |
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| CN113586063B (en) | 2022-09-16 |
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