CN114439549A - Multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device - Google Patents
Multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device Download PDFInfo
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- CN114439549A CN114439549A CN202210155195.1A CN202210155195A CN114439549A CN 114439549 A CN114439549 A CN 114439549A CN 202210155195 A CN202210155195 A CN 202210155195A CN 114439549 A CN114439549 A CN 114439549A
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- 239000011435 rock Substances 0.000 title claims abstract description 46
- 238000012544 monitoring process Methods 0.000 title claims abstract description 32
- 238000005065 mining Methods 0.000 title claims abstract description 15
- 238000005553 drilling Methods 0.000 claims description 13
- 210000000078 claw Anatomy 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 55
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 241000935974 Paralichthys dentatus Species 0.000 description 13
- 230000005684 electric field Effects 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
- E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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Abstract
The invention discloses a multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device, and belongs to the technical field of mine equipment. This mining tunnel roof rock stratum steady state monitoring alarm device of multifactor, through the even strong magnetic field that magnetic field generator produced, make its first space inside receive the influence of lorentz force, and then when making charged particle deflect 90, it can enter into the second space through the second aperture just, make it when the steady rock stratum of volatile appears sinking, its head rod drives the negative electrode plate and vertical displacement appears, make its negative electrode plate receive charged particle striking position change, and then detect the back through the display and send out the police dispatch newspaper can through the alarm, this kind of mode mainly is to the monitoring alarm with the roof rock stratum steady state, and monitor roof rock stratum settlement rate, tunnel roof rock stratum steady state monitoring efficiency is greatly improved, reduce artifical monitoring's thing and send out error and potential danger, guarantee monitoring accuracy.
Description
Technical Field
The invention belongs to the technical field of mine equipment, and particularly relates to a multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device.
Background
In the process of underground coal mining, monitoring of settlement displacement and settlement rate of a roadway roof is one of important contents of mine pressure observation, monitoring is carried out in a mode of arranging a roadway roof displacement meter in common use in the past, and the specific measurement method is as follows: drilling holes with different depths in a top plate rock stratum of a roadway under a coal mine, extending an anchor fluke connected with a thin steel wire rope into the top plate rock stratum along the drilled holes, connecting the other end of the steel wire rope with a tensioned measuring tape, and when the anchor fluke sinks along with the rock stratum, the steel wire rope connected onto the anchor fluke can also displace along with the anchor fluke, and the measuring tape tensioned at the other end can contract, so that the displacement condition of the rock stratum can be seen through the measuring tape scales. The main defects of the method mainly comprise the following aspects: firstly, the tape measure needs to be placed on a roadway roof, and the tape measure needs to be read manually during each monitoring process, so that potential danger exists; secondly, when the spring in the measuring tape is in a tension state for a long time, the material fatigue phenomenon is easy to generate and the failure is easy to occur; the sinking displacement of the top plate can be monitored only, and the sinking rate of the top plate cannot be monitored, but in the actual production process, the monitoring of the sinking rate of the top plate is an important factor for judging the pressure of the top plate; the operation is complex, tedious, time-consuming and labor-consuming, the actual measurement effect under the mine is not good, and the measurement precision is not enough. The prior patent discloses a roadway side displacement measuring device and method, and the publication number is as follows: CN201911116685.5, wherein the clear benefit that reaches is "carry out the measurement of tunnel group portion creep displacement volume according to the law of motion of charged particle in even strong electric field and even strong electric field, can make the measurement result accuracy of tunnel group portion creep displacement volume improve greatly, can improve measuring convenience and high efficiency simultaneously, and can guarantee the normal production in the pit in tunnel group portion creep displacement volume measurement, do not influence pedestrian and expert car, ensure the normal clear of production operation" nevertheless this type of mode is to detecting tunnel group portion creep displacement volume measurement, can not realize top rock stratum steady state monitoring and realize reporting to the police, so need an equipment that can realize top rock stratum steady state monitoring to replace traditional detection mode.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects of the prior art, the invention provides a multi-factor mining roadway roof rock stratum steady-state monitoring alarm device, and solves the problems that the traditional monitoring mode is high in artificial observation strength and has potential danger, a traditional measuring device is prone to failure, side pull collar is not accurate, and meanwhile, the traditional mode intelligently monitors the displacement of roof subsidence and cannot effectively monitor and record the subsidence rate.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a mining tunnel roof rock stratum steady state monitoring alarm device of multifactor, includes first casing, the right flank of first casing and the left surface fixed connection of second casing, first shells inner wall's upper and lower two surfaces are upper boundary plate and lower boundary plate respectively, two magnetic field generators of opposite face fixedly connected with of upper boundary plate and lower boundary plate, first aperture has been seted up to the upper surface of upper boundary plate inner wall, the top of first aperture is provided with the emission source, sliding connection has positive electrode plate and negative electrode plate respectively in two slide holes that second casing upper surface was seted up, the second aperture has all been seted up to the left surface of positive electrode plate and second casing, the top of positive electrode plate and negative electrode plate is provided with head rod and second connecting rod respectively.
As a further scheme of the invention: the top end of the first connecting rod is clamped on the inner wall of a first drilling hole formed in the inner wall of the unstable rock stratum through a first anchor fluke, and the top end of the second connecting rod is clamped on the inner wall of a second drilling hole formed in the inner wall of the stable rock stratum through a second anchor fluke.
As a further scheme of the invention: the bottom end of the first connecting rod is fixedly connected with a first fixed end of the upper surface of the negative electrode plate, and the bottom end of the second connecting rod is fixedly connected with a second fixed end of the upper surface of the positive electrode plate.
As a further scheme of the invention: the left side face of the positive electrode plate is provided with a power supply, and the surface of the negative electrode plate is electrically connected with a display screen and an alarm.
As a further scheme of the invention: the inner walls of the first shell and the second shell are respectively provided with a first space and a second space.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device has the advantages that the interior of a first space is influenced by Lorentz force through a uniform magnetic field generated by a magnetic field generator, charged particles can enter a second space through a second small hole right when deflecting 90 degrees, the charged particles are subjected to horizontal rightward electric field force under the action of the uniform electric field generated by a positive electrode plate and a negative electrode plate and vertically impact on the negative electrode plate, the impact position of the charged particles received by the negative electrode plate is displayed through a display screen outside the negative electrode plate, when a volatile stable rock stratum sinks, a first connecting rod drives the negative electrode plate to vertically displace, the negative electrode plate is subjected to the change of the impact position of the charged particles, and then an alarm is given out through an alarm after the detection of a display, and the mode mainly aims at monitoring and alarming of the steady state of the roof and the rock stratum, and the settlement rate of the roof rock stratum is monitored, the steady-state monitoring efficiency of the tunnel roof rock stratum is greatly improved, the occurrence error and potential danger of manual monitoring are reduced, and the monitoring accuracy is guaranteed.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the monitoring principle of the present invention;
in the figure: 1. emission source, 2, charged particle, 3, upper boundary plate, 4, lower boundary plate, 5, magnetic field generator, 6, positive electrode plate, 7, negative electrode plate, 8, first stiff end, 9, head rod, 10, first fluke, 11, second stiff end, 12, second connecting rod, 13, second fluke, 14, display screen, 15, first aperture, 16, second aperture, 17, power, 18, first drilling, 19, second drilling, 20, siren, 21, first casing, 22, second casing.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1-3, the present invention provides a technical solution: the utility model provides a mining tunnel roof rock stratum steady state monitoring alarm device of multifactor, including first casing 21, the right flank of first casing 21 and second casing 22's left surface fixed connection, the upper and lower two surfaces of first casing 21 inner wall are upper boundary plate 3 and lower boundary plate 4 respectively, two magnetic field generator 5 of opposite face fixedly connected with of upper boundary plate 3 and lower boundary plate 4, first aperture 15 has been seted up to the upper surface of upper boundary plate 3 inner wall, the top of first aperture 15 is provided with emission source 1, sliding connection has positive electrode plate 6 and negative electrode plate 7 respectively in two slide holes that second casing 22 upper surface was seted up, second aperture 16 has all been seted up to positive electrode plate 6 and second casing 22's left surface, the top of positive electrode plate 6 and negative electrode plate 7 is provided with head rod 9 and second connecting rod 12 respectively.
The top end of the first connecting rod 9 is clamped on the inner wall of a first drilling hole 18 formed in the inner wall of the unstable rock stratum through a first anchor claw 10, and the top end of the second connecting rod 12 is clamped on the inner wall of a second drilling hole 19 formed in the inner wall of the stable rock stratum through a second anchor claw 13. By adopting the first fluke 10 and the second fluke 13, the first connecting rod 9 and the second connecting rod 12 can be conveniently and respectively kept to be positioned inside the corresponding rock stratum for fixing, and real-time monitoring is facilitated.
The bottom end of the first connecting rod 9 is fixedly connected with a first fixed end 8 on the upper surface of the negative electrode plate 7, and the bottom end of the second connecting rod 12 is fixedly connected with a second fixed end 11 arranged on the upper surface of the positive electrode plate 6. By providing the first fixing end 8, the first fixing end 8 and the second fixing end 11 can maintain accurate installation positions with the first connecting rod 9 and the second connecting rod 12, making them more standardized.
The left side surface of the positive electrode plate 6 is provided with a power supply 17, and the surface of the negative electrode plate 7 is electrically connected with a display 14 and an alarm 20. Through setting up display screen 14, display screen 14 can be convenient for look over it wholly, can keep good monitoring effect.
The inner walls of the first and second housings 21 and 22 are provided with first and second spaces, respectively.
The working principle of the invention is as follows:
continuously emitting charged particles 2 by using an emission source 1, the charged particles 2 are charged positively, the charge amount is q, pass through a first small hole 15 in the middle of an upper boundary plate 3, a first shell 21 and a second shell 22 are respectively provided with a first space and a second space, the first space is externally wrapped by a first shell 21, the first shell 21 plays a role in protecting an internal structure, the first space has a magnetic field generator 5 in front and back, a uniform magnetic field can be formed in the first space, the size of the uniform magnetic field is B, when the charged particles 2 enter the first space through the first small hole 15, the first space has a strong magnetic field effect, the influence of Lorentz force can be received, and the charged particles 2 are enabled to do uniform circumferential motion in the magnetic field, namely:
fluo＝Bv1q＝mv1 2/R；
In the formula: f. ofLuoThe Lorentz force of the charged particles 2 in the uniform magnetic field;
b is the field intensity of the uniform magnetic field;
v1is the initial velocity of the charged particles 2 into the first space;
q is the charge amount of the charged particles 2;
m is the mass of the charged particles 2;
r is the radius of the circle of uniform circular motion made by the charged particles 2.
The lower boundary of the first space is a lower boundary plate 4, when the charged particles 2 deflect, the charged particles enter the second space through a second small hole 16 in the middle of a positive electrode plate 6 on the right side of the charged particles, the left boundary of the second space is the positive electrode plate 6, the right boundary of the second space is a negative electrode plate 7, the surfaces of the positive electrode plate 6 and the negative electrode plate 7 are wrapped by a second shell 22, the second shell 22 plays a role of protecting an internal structure, the positive electrode plate 6 and the negative electrode plate 7 are parallel to each other, the distance between the positive electrode plate 6 and the negative electrode plate 7 is d, the positive electrode plate 6 is connected with a power supply 17, a uniform electric field exists between the positive electrode plate 6 and the negative electrode plate 7, the field intensity of the uniform electric field is E, when the charged particles 2 in the first space enter the second space through the second small hole 16 in the middle of the positive electrode plate 6, the charged particles 2 are positively charged, and accordingly, the second space is subjected to electric field force which faces to the right horizontally
fElectric power＝Eq；
In the formula: f. ofElectric powerIs the electric field force that the charged particles 2 experience in the electric field;
causing the charged particles 2 to move with a velocity v2Perpendicularly to the negative electrode plate 7, where v2The velocity of the charged particles 2 striking the negative electrode plate 7 is calculated by:
the negative electrode plate 7 is externally connected with a display screen 14, the negative electrode plate 7 can continuously receive the charged particles 2 and record the charged particles2 receiving point position, the display screen 14 can display the position d of the charged particles 2 received by the negative electrode plate 7iThe position of the 1 st charged particle 2 left on the negative electrode plate 7 is d1The position of the 2 nd charged particle 2 left on the negative electrode plate 7 is d2... the position left by the i-th charged particle 2 in the negative electrode plate 7 is di... the position left by the n-th strip of electro-particles 2 at the negative electrode plate 7 is dnWhere i is 1, 2, 3.. n, and the distance d between the positions of the two front and rear charged particles 2 on the negative electrode plate 7 is calculatedjidj1Leaving the 1 st charged particle 2 at the position d of the negative electrode plate 71With the 2 nd charged particles 2 at the position d of the negative electrode plate 72The distance between, i.e. dj1＝d1-d2；dj2Leaving the 2 nd charged particle 2 at the position d of the negative electrode plate 72And the position d of the 3 rd charged particle 2 on the negative electrode plate 73The distance between, i.e. dj2＝d2-d3......djiLeaving a position d for the ith charged particle 2 on the negative electrode plate 7iAnd the position d of the (i + 1) th charged particle 2 left on the negative electrode plate 7i+1The distance between, i.e. dji＝di-di+1，......djnLeaving a position d for the nth charged particle 2 at the negative electrode plate 7nAnd the position d of the (n + 1) th charged particle 2 left on the negative electrode plate 7n+1The distance between, i.e. djn＝dn-dn+1Where i is 1, 2, 3.. n, and the display time t of the positions of the two charged particles 2 left on the negative electrode plate 7 is recorded simultaneouslyi，t1The display time t for the position of the 1 st charged particle 2 on the negative electrode plate 72T. the display time for the position of the 2 nd charged particle 2 left on the negative electrode plate 7iTime t is displayed for the position of the ith charged particle 2 on the negative electrode plate 7nThe time is displayed for the position of the nth charged particle 2 on the negative electrode plate 7, i being 1, 2, 3i，v1The velocity of the 1 st charged particle 2 at the position of the negative electrode plate 7 to the 2 nd charged particle 2 at the position of the negative electrode plate 7, v1＝dj1/t2-t1＝d1-d2/t2-t1；v2The velocity of the 2 nd charged particle 2 at the position of the negative electrode plate 7 to the 3 rd charged particle 2 at the position of the negative electrode plate 7, namely:
v1...v2＝dj2/t3-t2＝d2-d3/t3-t2...v3...vi；
wherein v isiThe velocity from the position where the ith charged particle 2 stays on the negative electrode plate 7 to the position where the (i + 1) th charged particle 2 stays on the negative electrode plate 7 is:
vi＝dji/ti+1-ti＝di-di+1/ti+1-ti......vn；
wherein v isnThe velocity from the position where the nth charged particle 2 is left in the negative electrode plate 7 to the position where the (n + 1) th charged particle 2 is left in the negative electrode plate 7, namely:
vn＝djn/tn+1-tn＝dn-dn+1/tn+1-tn。
the upper end of the negative electrode plate 7 is connected with a first fixed end 8, the upper end of the first fixed end 8 is fixedly provided with a first connecting rod 9, the uppermost part of the first connecting rod 9 is connected with a first anchor claw 10, a first drilling hole 18 is drilled in a roadway roof to a volatile stable rock stratum, the first anchor claw 10 is anchored in the volatile stable rock stratum along the first drilling hole 18 to enable the first anchor claw to sink along with the volatile stable rock stratum, meanwhile, the uppermost part of the positive electrode plate 6 is connected with a second fixed end 11, the upper end of the second fixed end 11 is fixedly provided with a second connecting rod 12, the uppermost part of the second connecting rod 12 is connected with a second anchor claw 13, a second drilling hole 19 is drilled in the roadway roof to the stable rock stratum, and the second anchor claw 13 is anchored in the stable rock stratum along the second drilling hole 19 to enable the second anchor claw 13 to keep immovable.
When the volatile stable rock stratum subsides, the first fluke 10 anchored in the volatile stable rock stratum is driven to move downwards, the first fluke 10 drives the first connecting rod 9 to move downwards, and the first connecting rod 9 drives the first anchoring end to move downwardsThe first anchoring end pushes the negative electrode plate 7 to move downwards, and at the moment, the second fluke 13, the second connecting rod 12, the second fixing end 11 and the positive electrode plate 6 are not moved due to the stable rock stratum. When the charged particles 2 emitted from the emission source 1 pass through the first space and enter the second space through the second small hole 16, and when the negative electrode plate 7 sinks along with the volatile stable rock layer, the charged particles 2 can leave bright strips with different positions on the negative electrode plate 7, and by the method, the sedimentation value d of the volatile stable rock layer at the ith second can be displayed on the display screen 14jiN and the sedimentation rate viN, the value d of the i-th second subsidence of volatile stable rock formationjiN and the sedimentation rate viWhen i 1, 2, 3.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides a mining tunnel roof rock stratum steady state monitoring alarm device of multifactor, includes first casing (21), its characterized in that: the right side surface of the first shell (21) is fixedly connected with the left side surface of the second shell (22), the upper and lower surfaces of the inner wall of the first shell (21) are respectively an upper limiting plate (3) and a lower limiting plate (4), the opposite surfaces of the upper boundary plate (3) and the lower boundary plate (4) are fixedly connected with two magnetic field generators (5), the upper surface of the inner wall of the upper limiting plate (3) is provided with a first small hole (15), a transmission source (1) is arranged above the first small hole (15), two slide holes arranged on the upper surface of the second shell (22) are respectively connected with a positive electrode plate (6) and a negative electrode plate (7) in a sliding way, the left side surfaces of the positive electrode plate (6) and the second shell (22) are both provided with second small holes (16), and a first connecting rod (9) and a second connecting rod (12) are respectively arranged above the positive electrode plate (6) and the negative electrode plate (7).
2. The multi-factor mining roadway roof rock stratum steady-state monitoring and warning device of claim 1, characterized in that: the top end of the first connecting rod (9) is clamped on the inner wall of a first drilling hole (18) formed in the inner wall of the volatile stable rock stratum through a first anchor claw (10), and the top end of the second connecting rod (12) is clamped on the inner wall of a second drilling hole (19) formed in the inner wall of the stable rock stratum through a second anchor claw (13).
3. The multi-factor mining roadway roof rock stratum steady-state monitoring and warning device of claim 1, characterized in that: the bottom of first connecting rod (9) and first stiff end (8) fixed connection of negative electrode board (7) upper surface, the bottom of second connecting rod (12) and second stiff end (11) fixed connection of positive electrode board (6) upper surface setting.
4. The multi-factor mining roadway roof rock stratum steady-state monitoring and warning device of claim 1, characterized in that: the left side face of the positive electrode plate (6) is provided with a power supply (17), and the surface of the negative electrode plate (7) is electrically connected with a display screen (14) and an alarm (20).
5. The multi-factor mining roadway roof rock stratum steady-state monitoring and warning device of claim 1, characterized in that: the inner walls of the first shell (21) and the second shell (22) are respectively provided with a first space and a second space.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210155195.1A CN114439549A (en) | 2022-02-21 | 2022-02-21 | Multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210155195.1A CN114439549A (en) | 2022-02-21 | 2022-02-21 | Multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device |
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| CN202210155195.1A Pending CN114439549A (en) | 2022-02-21 | 2022-02-21 | Multi-factor mining roadway roof rock stratum steady-state monitoring and alarming device |
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