CN106761931A - Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method - Google Patents
Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method Download PDFInfo
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- CN106761931A CN106761931A CN201611138645.7A CN201611138645A CN106761931A CN 106761931 A CN106761931 A CN 106761931A CN 201611138645 A CN201611138645 A CN 201611138645A CN 106761931 A CN106761931 A CN 106761931A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
A kind of coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method, belong to mine safety and monitoring field.The system is made up of sonic probe, electromagnetic antenna, firedamp sensor, current sensor, voltage sensor, acoustic-electric gas Simultaneous Monitoring instrument, communication sub-station, substation power and monitoring center's machine etc..System receives sound wave, electromagnetic radiation and Gas Signal by acoustic-electric gas Simultaneous Monitoring instrument, can access voltage sensor monitoring power cable energization situation, accesses current sensor monitoring electromechanical equipment working condition；By sound wave, electromagnetism and Gas Signal catastrophe and acoustic-electric spectrum signature, with reference to electric current, voltage signal change identification probe, antenna movement and mining work activities situation；By effective sound wave, electromagnetic signal change and spectrum signature, with reference to Gas Signal variation characteristic early warning working face front abnormal area and coal rock dynamic disaster danger.Can be applied to the abnormal area monitoring of working face front and coal and gas prominent, bump monitoring and warning.
Description
Technical field
The present invention relates to a kind of mine safety and monitoring field, particularly a kind of coal rock dynamic disaster acoustic-electric gas reality
When automatic monitoring system and method.
Background technology
Colliery coal rock dynamic disaster mainly includes coal (rock) prominent with gas (methane or carbon dioxide), coal and gas pressure
Go out, bump etc..With the increasing of mine excavation depth and mining rate, the coal petrography such as Gas Outburst, bump is moved
Power disaster is on the rise and complicated, and disasters danger is significantly increased, while some did not had dynamic disaster or sign unobvious originally
Mine also gradually manifest now, seriously threaten the normal production of the life security and mine of underground labour.
China can be broadly divided into static method and the class of dynamic method two for the prediction of coal rock dynamic disaster at present.
Static method mainly by drilling, realize in observation drilling, including drilling cuttings multiplying power method, drilling by some physical indexs
Gas inrush initial velocity method, drilling cuttings desorption of mash gas index method and other method of aggregative indicators.The continuity of these static method measured values
Difference, measure need to take certain activity duration and space, and quantities is larger, and the activity duration is also more long, have certain shadow to production
Ring；Security in operating process is poor, and easily dynamic disaster is induced when drilling；The accuracy of prediction is relatively low, easily by artificial and coal
Body influence pockety.
Dynamic method prediction is mainly by continuous monitoring electromagnetic radiation, sound emission, microseism, gas emission or gas density etc.
Signal is analyzed prediction, with the obvious advantage compared with static method, good with signal continuity, monitoring process little impact on production etc.
Feature.But also there is respective limitation, microseism, rock noise, electromagnetic radiation and gas monitor are independent, on varying environment, influence
The adaptability of factor is different with sensitiveness, and the interference such as technical process, electromechanical equipment and monitoring sensor movement are drilled not by digging
With and than more serious, and cannot accurately identify.
In the last few years, coal petrography electromagnetic radiation, acoustic emission (microseism, sound emission, infrasound, ultrasonic wave etc.) and Gas
Characteristic and its application study aspect achieve larger progress.
Research shows that sound wave, electromagnetic radiation and gas have relatively good response to coal rock dynamic disaster, but simultaneously non-fully same
Step, has complementarity between multi signal, triplicity can more comprehensively reflect stress, deformation fracture process, the gas of coal and rock
Preservation and gush out, coal rock dynamic disaster evolutionary process, being combined with tendency method using critical value method being capable of early warning coal or rock dynamic calamity
Evil is dangerous.Due to being failed the interference signals such as synchronous high-speed monitoring, electromechanical equipment, movable sensor and mining work activities by multi signal
Fail automatic monitoring and cannot effectively recognize automatically, useful signal identification is difficult, and rate of false alarm is high so that current technology cannot also
Meet mine and mining work the need for many means of coal rock dynamic disaster, accurate and effective, the auto-real-time monitoring early warning, effectively
Signal identification accuracy rate and early warning accuracy rate need further raising.
Research shows that the catastrophe and its distinctive spectrum signature of sound wave and electromagnetic signal can reflect that electromechanical equipment is done
Disturb and sensor situation of movement, the mutation of acoustic-electric Gas Signal and attenuation change can also reflect that digging disturbs situation.But it is how same
Step is monitored and accurately identifies various useful signals and interference signal, technical process automatically, and according to the change of multi objective useful signal
Automatic effectively early warning coal and gas prominent etc. the coal rock dynamic disaster of change trend is dangerous, is problem anxious to be resolved.
In addition, the abnormal area in front of working face is very big to safe and efficient Influence of production, it is that coal petrography mash gas dynamic occurs
The main region of disaster is abnormal to the construction in front of working face, the change of coal petrography gas etc. in the past mainly by bore detecting or ground
The method of ball physical detecting is solved, to the less regionally detecting of small and intensity of anomaly and recognition accuracy low, and digging is lived
Dynamic influence is big, poor real, how to utilize means effectively monitoring and identification construction, high stress, the change of coal thickness, the coal of monitoring
The region such as rock mass strength change and gas bearing exception, is also problem anxious to be resolved.
The content of the invention
Technical problem：The present invention be directed to demand and problems of the prior art, there is provided a kind of coal rock dynamic disaster
Acoustic-electric gas real-time automatic monitoring system and method, the system and method can be to getting working face coal petrography stand under load and deformation fractures
Process, Gas process, working face front region exception, coal rock dynamic disaster evolutionary process, measure validity etc. are had
Effect, noncontact, continuous uninterrupted and long-range monitoring, evaluate and early warning, equipment is installed and easy to operate, automation and intelligent journey
Degree is high, and on producing without influence, expense is low.
Technical scheme：The object of the present invention is achieved like this：The present invention includes automatic monitoring system and automatic monitoring side
Method；
Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system, including sonic probe, electromagnetic antenna, methane sensing
Device, communication sub-station, substation power, optical networking, monitoring center's machine, the mechanical, electrical flow sensor of monitoring terminal, voltage sensor and acoustic-electric
Gas Simultaneous Monitoring instrument；Sonic probe, electromagnetic antenna, current sensor, voltage sensor and firedamp sensor and acoustic-electric gas
The respective sensor input interface connection of Simultaneous Monitoring instrument；The communication interface of acoustic-electric gas Simultaneous Monitoring instrument is defeated with communication sub-station
Enter end connection, communication sub-station is connected by optical networking, interchanger and monitoring center's machine and monitoring terminal machine；Substation power and acoustic-electric
The mu balanced circuit connection of gas Simultaneous Monitoring instrument；Sonic probe, electromagnetic antenna, firedamp sensor, current sensor and voltage are passed
Sensor connects and composes monitor with acoustic-electric gas Simultaneous Monitoring instrument, and multiple monitors are arranged in down-hole mining working face or tunnel prison
Survey in region.
Described acoustic-electric gas Simultaneous Monitoring instrument include sonic probe interface, electromagnetic antenna interface, firedamp sensor interface,
It is current sensor interface, voltage sensor interface, signal conditioner, signaling conversion circuit, microprocessor, data storage, aobvious
Show device and communication interface, mu balanced circuit；Sonic probe interface is connected with acoustic signals conditioner input, electromagnetic antenna interface with
Electromagnetic signal conditioner input connect, firedamp sensor interface, current sensor interface, voltage sensor interface respectively with phase
Induction signal change-over circuit is connected；The output end of signal conditioner and signaling conversion circuit is connected with microprocessor input；Communication
Interface input, display, keyboard and data storage are connected with the I/O interfaces of microprocessor；Output end of microprocessor with
Communication interface is connected；Mu balanced circuit dc source for needed for acoustic-electric gas Simultaneous Monitoring instrument and sensor are provided.
Using the automatic monitoring method of coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system, the survey of monitoring is being needed
Point or working face install sonic probe, electromagnetic antenna, firedamp sensor, current sensor is installed on power cable and voltage is passed
Sensor, is respectively connected to the respective sensor input interface of acoustic-electric gas Simultaneous Monitoring instrument, connection communication substation, substation power, friendship
Change planes and monitoring center's machine；Acoustic-electric gas Simultaneous Monitoring instrument synchronously receives sound wave, electromagnetism, gas density, voltage and current signal,
And data are uploaded to monitoring center's machine in real time；By sound wave, electromagnetic radiation and gas density live signal and waveform, Neng Goutong
Step reflection working face front coal and rock stand under load, deformation fracture, gas porous flow gush out situation, signal waveform feature, spectrum signature and
Its change, power cable energization situation, current signal monitoring electromechanical equipment working condition are monitored by voltage signal；Monitoring center
Machine analyzes each signal intensity situation, and the interference of identification electromechanical equipment, mining work activities and probe, antenna are moved and set situation and useful signal：
Sound wave, electromagnetic signal when monitoring are undergone mutation, and acoustoelectric signal has the spectrum signature that electromechanical equipment is disturbed, voltage and current
When signal is also undergone mutation, caused by showing sound wave, electromagnetic signal for electromechanical equipment interference；Sound wave, electromagnetic signal hair when monitoring
There is raw mutation, acoustoelectric signal artificial shifting to set sensor characteristics frequency spectrum, when voltage and current signal is not undergone mutation, show sound
Ripple, electromagnetic signal are that sonic probe and electromagnetic antenna movement are caused；When there is mutation to increase and steady for sound wave, electromagnetism and Gas Signal
When determining attenuation change feature, show that working face carries out mining work activities；Acoustic signals and electromagnetic signal filtering interfering that monitoring is obtained
After obtain effective acoustic signals and effective electromagnetic signal；Changed by effective acoustic signals and effective electromagnetic signal and frequency spectrum is special
Levy, it is dangerous with reference to the Gas Signal variation characteristic early warning working face front coal rock dynamic disaster such as abnormal area and coal and gas prominent
Property：When two in effective sound wave, electromagnetic signal and Gas Signal and presented above continuous or fluctuation-type growth trend, and signal is strong
Degree and Long-term change trend exceed region extremely corresponding critical value when, show working face front for geologic anomaly region；When effective sound wave,
Two and continuous, fluctuation-type growth trend presented above in electromagnetic signal and Gas Signal, and signal intensity or Long-term change trend are super
When crossing the dangerous corresponding critical value of dynamic disaster, show dynamic disasters danger.
Beneficial effect and advantage：Being capable of the various signals in overall process monitoring face --- acoustic-electric Gas Signal, automatic identification
Effective and interference signal, and according to acoustic-electric gas useful signal variation tendency automatic identification working face front abnormal area, early warning
The danger of coal rock dynamic disaster.
Realize the automatic monitoring of integration of acoustic-electric Gas Signal, it is ensured that the synchronism of useful signal monitoring；By connecing
Enter voltage sensor monitoring cable energization situation, access current sensor monitoring electromechanical equipment working condition, realize monitoring section
The powered and working condition of electromechanical equipment, realizes the auto-real-time monitoring of the various interference such as electromagnetism and sound wave in domain；By sound
Ripple and electromagnetic signal Characteristics of Mutation, spectrum signature, with reference to voltage, current monitoring result, realize automatic identification interference signal, visit
Head and antenna situation of movement；Effective acoustic signals and effective electromagnetic signal can have been obtained by monitoring, filtering and data analysis,
Changed by effective acoustic signals and effective electromagnetic signal and spectrum signature, except realizing automatic monitoring and warning coal and gas prominent etc.
Outside coal rock dynamic disaster danger, early warning working face front abnormal area can be also recognized, realize working face front exceptions area
The real-time automatic monitoring in domain and identification, can significantly improve the dangerous automaticity of coal rock dynamic disaster and early warning is accurate
Rate, reliability.
Brief description of the drawings
Fig. 1 is monitoring flow chart of the invention.
Fig. 2 is field monitoring instrument layout figure of the invention.
Fig. 3 is the composition structure chart of present system.
In figure：1st, sonic probe；2nd, electromagnetic antenna；3rd, firedamp sensor；4th, current sensor；5th, voltage sensor；6、
Acoustic-electric gas Simultaneous Monitoring instrument；7th, communication sub-station；8th, substation power；9th, optical networking；10th, monitoring center's machine；11st, monitoring terminal
Machine；12nd, cable；13rd, interchanger.
Specific embodiment
An example of the present invention is further described below in conjunction with the accompanying drawings：
Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system, including sonic probe, electromagnetic antenna, methane sensing
Device, current sensor, voltage sensor, acoustic-electric gas Simultaneous Monitoring instrument, communication sub-station, substation power, optical networking, monitoring center
Machine, monitoring terminal machine；Sonic probe 1, electromagnetic antenna 2, current sensor 4, voltage sensor 5 and firedamp sensor 3 and acoustic-electric
The respective sensor input interface connection of gas Simultaneous Monitoring instrument 6；The communication interface of acoustic-electric gas Simultaneous Monitoring instrument 6 with communicate point
Stand 7 input connection, communication sub-station 7 connected by optical networking 9 and interchanger 13 with monitoring center machine 10 and monitoring terminal machine 11
Connect；Substation power 8 is connected with the mu balanced circuit of acoustic-electric gas Simultaneous Monitoring instrument 6；Sonic probe 1, electromagnetic antenna 2, gas are passed
Sensor 3, current sensor 4 and voltage sensor 5 connect and compose monitor, multiple monitors with acoustic-electric gas Simultaneous Monitoring instrument 6
It is arranged in down-hole mining working face or tunnel monitor region.
Described acoustic-electric gas Simultaneous Monitoring instrument include sonic probe interface, electromagnetic antenna interface, firedamp sensor interface,
It is current sensor interface, voltage sensor interface, signal conditioner, signaling conversion circuit, microprocessor, data storage, aobvious
Show device and communication interface, mu balanced circuit；Sonic probe interface is connected with acoustic signals conditioner input, electromagnetic antenna interface with
Electromagnetic signal conditioner input connect, firedamp sensor interface, current sensor interface, voltage sensor interface respectively with phase
Induction signal change-over circuit is connected；The output end of signal conditioner and signaling conversion circuit is connected with microprocessor input；Communication
Interface input, display, keyboard and data storage are connected with the I/O interfaces of microprocessor；Output end of microprocessor with
Communication interface is connected；Mu balanced circuit dc source for needed for acoustic-electric gas Simultaneous Monitoring instrument and sensor are provided.
Part composition is explained respectively below, i.e.,：1st, electromagnetic antenna；2nd, sonic probe；3rd, signal conditioner；4th, sound
Electric gas Simultaneous Monitoring instrument；5th, mu balanced circuit；6th, communication interface；7th, communication sub-station；8th, monitoring center's machine.
1) electromagnetic antenna
Electromagnetic antenna can be wide frequency antenna or ultralow frequency antenna.Ultralow frequency antenna passband is 30~1000Hz, sensitivity
Height, with orientation feature.The upper limiting frequency of wide frequency antenna is not less than 500kHz, and bandwidth is not less than 500kHz, and sensitivity is high, has
Orientation feature.
2) sonic probe
Sonic probe can be acoustic emission probe, rock noise probe or microseism probe.
3) signal conditioner
It is mainly used in the signal that antenna and probe are received to be amplified, filters, multiplication factor can adjust, and its output is straight
The analog-digital converter picked into microprocessor is changed.
4) acoustic-electric gas Simultaneous Monitoring instrument
By microprocessor, signal conditioner, signal adapter, display, data storage, signal output apparatus, power supply,
Button etc. constitute so that realize the synchronous acquisition to sound wave, electromagnetism, gas, electric current, voltage signal and waveform, display, store and
Output.
The key technical indexes：
A) type of explosion proof construc tion：ExibI essential safe types；
B) electromagnetic wave signal frequency is received：30Hz~500kHz；
C) acoustic signals frequency is received：1Hz~100kHz；
D) sampling rate：1kHz~1MHz is adjustable, meets different needs；
E) recording mode：Acoustic-electric gas Simultaneous Monitoring instrument is continuous, automatically process, and log file is generated in the machine, while real
When export to ground monitoring central record；
F) data storage：Using SD/TF cards as storage device, data storage capacity is more than 8GB；
5) mu balanced circuit
This monitor is powered by external power source, also can be used directly communication sub-station offer power supply, operating voltage be 15~
32VDC.Fixed+5V power supplys are provided by Width funtion input power module K7805, is used for digital circuits section.By width
Control source power module K7812 provides fixed+12V power supplys, is used for signal conditioner part.
6) communication interface
With five kinds of mode signal outputs, respectively RS485 signaling interfaces, 4~20mA signaling interfaces, 200~1000Hz
Signaling interface, CAN interface, Ethernet interface, are suitable for different monitoring systems requirements, can by cable with communicate point
Station is coupled, and realizes that test data is real-time transmitted to monitoring center.
7) communication sub-station
Communication sub-station is the underground substation in monitoring mining monitoring system, can be received from acoustic-electric gas Simultaneous Monitoring instrument
Monitoring Data and Wave data, and be uploaded to monitoring center's machine.
8) monitoring center's machine
Monitoring center's machine is by data storage server, data real-time analysis server, data backup server, system administration
Server group into.
Automatic monitoring method of the invention is：
Acoustic-electric gas Simultaneous Monitoring instrument accesses sonic probe, electromagnetic antenna and firedamp sensor, synchronous to receive sound wave, electromagnetism
Radiation and gas density live signal and waveform, can synchronously reflect that coal and rock stand under load, deformation fracture, gas ooze in front of working face
Stream is gushed out situation, signal waveform feature, spectrum signature and its change；Voltage sensor monitoring power cable energization situation is accessed,
Access current sensor monitoring electromechanical equipment working condition.
By sound wave, electromagnetism and Gas Signal Characteristics of Mutation and acoustoelectric signal spectrum signature, with reference to voltage, current monitoring knot
The interference of fruit identification electromechanical equipment, sensor are moved and set and working face digging disturbing influence：Sound wave, electromagnetic signal when monitoring occur prominent
Become, and acoustoelectric signal have electromechanical equipment disturb spectrum signature, when voltage and current signal is also undergone mutation, show sound wave,
Electromagnetic signal is that electromechanical equipment interference is caused；Sound wave, electromagnetic signal when monitoring are undergone mutation, and there is acoustoelectric signal artificial shifting to set
Sensor characteristics frequency spectrum, when voltage and current signal is not undergone mutation, shows that sound wave, electromagnetic signal are sonic probe and electromagnetism day
Caused by line movement；When sound wave, electromagnetism and Gas Signal have mutation growth and stabilising decay variation characteristic, show that working face enters
Row mining work activities；Effective acoustic signals and effectively electricity are obtained after monitoring the acoustic signals and electromagnetic signal filtering interference signals for obtaining
Magnetic signal.
Needing the measuring point or working face of monitoring that sonic probe, electromagnetic antenna, firedamp sensor are installed, electromagnetic antenna is being had
Effect receives direction and is directed at the area to be monitored of coal and rock, and fixes antenna, and antenna is not more than 30 meters with the distance of tested region
It is advisable；Sonic probe is passed according to the corresponding coupling of Frequency Band Selection and fixed form, acoustic signals in monitoring coal and rock, gas is surveyed
Sensor according to《Safety regulations in coal mine》Requirement install；Current sense is installed on the power cable of electromechanical equipment in the monitored area
Device and voltage sensor；Antenna, probe and various sensors are respectively connected to the corresponding interface of acoustic-electric gas Simultaneous Monitoring instrument, connection
Communication sub-station, substation power, interchanger and monitoring center's machine；By remote controller key and display, according to spot sensor
Deployment scenarios, set acoustic-electric gas Simultaneous Monitoring instrument running parameter, such as monitoring passage, triggering mode, sample frequency, storage side
Case, communication mode etc., parameter can also be set by monitoring center by remote software.Acoustic-electric gas Simultaneous Monitoring instrument Simultaneous Monitoring is surveyed
Sound wave, electromagnetism, gas density, electric current and voltage signal in point region or working face, and it upload the data to monitoring center's machine；Prison
Measured center machine analyzes each signal intensity situation, and the interference of identification electromechanical equipment, mining work activities and probe, antenna move the situation that sets and effectively
Signal；Changed and spectrum signature by effective acoustic signals and effective electromagnetic signal, with reference to Gas Signal variation characteristic early warning work
The square coal rock dynamic disaster such as abnormal area and coal and gas prominent is dangerous in face of work, when effective sound wave, electromagnetic signal and gas
Two and continuous or fluctuation-type sustainable growth trend presented above in signal, signal intensity and Long-term change trend are not less than region exception
During corresponding critical value, show that working face front is geology or stress abnormality region；When effective sound wave, electromagnetic signal and Gas Signal
In two and continuous, fluctuation-type growth trend presented above, and signal intensity or Long-term change trend to exceed corresponding dynamic disaster dangerous
During the corresponding critical value of property, show dynamic disasters danger.
Claims (3)
1. a kind of coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system, it is characterised in that：Including sonic probe, electromagnetism day
Line, firedamp sensor, communication sub-station, substation power, optical networking, monitoring center's machine, monitoring terminal machine, acoustic-electric gas Simultaneous Monitoring
Instrument, current sensor and voltage sensor；Sonic probe, electromagnetic antenna, current sensor, voltage sensor and firedamp sensor
Respective sensor input interface with acoustic-electric gas Simultaneous Monitoring instrument is connected；The communication interface of acoustic-electric gas Simultaneous Monitoring instrument with it is logical
Believe the input connection of substation, communication sub-station is connected by interchanger, optical networking and monitoring center's machine and monitoring terminal machine；Substation
Power supply is connected with the mu balanced circuit of acoustic-electric gas Simultaneous Monitoring instrument；Sonic probe, electromagnetic antenna, firedamp sensor, electric current are passed
Sensor and voltage sensor connect and compose monitor with acoustic-electric gas Simultaneous Monitoring instrument, and multiple monitors are arranged in down-hole mining work
Make in face or tunnel monitor region.
2. coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system according to claim 1, it is characterised in that：It is described
Acoustic-electric gas Simultaneous Monitoring instrument include that sonic probe interface, electromagnetic antenna interface, firedamp sensor interface, current sensor connect
Mouth, voltage sensor interface, signal conditioner, signaling conversion circuit, microprocessor, data storage, display and communication connect
Mouth, mu balanced circuit；Sonic probe interface is connected with acoustic signals conditioner input, and electromagnetic antenna interface is nursed one's health with electromagnetic signal
Device input is connected, and firedamp sensor interface, current sensor interface, voltage sensor interface change electricity with corresponding signal respectively
Road connects；The output end of signal conditioner and signaling conversion circuit is connected with microprocessor input；It is communication interface input end, aobvious
Show that device, keyboard and data storage are connected with the I/O interfaces of microprocessor；Output end of microprocessor is connected with communication interface；
Mu balanced circuit dc source for needed for acoustic-electric gas Simultaneous Monitoring instrument and sensor are provided.
3. the automatic monitoring side of coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system described in a kind of utilization claim 1
Method, it is characterised in that：Needing the measuring point or working face of monitoring that sonic probe, electromagnetic antenna, firedamp sensor are installed, in power
Current sensor and voltage sensor are installed, the respective sensor input for being respectively connected to acoustic-electric gas Simultaneous Monitoring instrument connects on cable
Mouthful, connection communication substation, substation power, interchanger and monitoring center's machine；Acoustic-electric gas Simultaneous Monitoring instrument synchronously receives sound wave, electricity
Magnetic, gas density, voltage and current signal, and data are uploaded to monitoring center's machine in real time；By sound wave, electromagnetic radiation and watt
This concentration live signal and waveform, can synchronously reflect that working face front coal and rock stand under load, deformation fracture, gas porous flow are gushed out feelings
Condition, signal waveform feature, spectrum signature and its change, power cable energization situation, current signal prison are monitored by voltage signal
Survey electromechanical equipment working condition；Monitoring center's machine analyzes each signal intensity situation, the interference of identification electromechanical equipment, mining work activities and spy
Head, antenna are moved and set situation and useful signal：Sound wave, electromagnetic signal when monitoring are undergone mutation, and acoustoelectric signal sets with electromechanics
The spectrum signature of standby interference, when voltage and current signal is also undergone mutation, shows that sound wave, electromagnetic signal disturb institute for electromechanical equipment
Cause；Sound wave, electromagnetic signal when monitoring are undergone mutation, and there is acoustoelectric signal artificial shifting to set sensor characteristics frequency spectrum, voltage and electricity
When stream signal is not undergone mutation, caused by showing sound wave, electromagnetic signal for sonic probe and electromagnetic antenna movement；When sound wave, electromagnetism
When there is mutation growth and stabilising decay variation characteristic with Gas Signal, show that working face carries out mining work activities；What monitoring was obtained
Effective acoustic signals and effective electromagnetic signal are obtained after acoustic signals and electromagnetic signal filtering interfering；By effective acoustic signals and
Effective electromagnetic signal change and spectrum signature, with reference to Gas Signal variation characteristic early warning working face front abnormal area and coal with watt
The coal rock dynamic disasters such as this protrusion are dangerous：It is when two in effective sound wave, electromagnetic signal and Gas Signal and presented above continuous
Or fluctuation-type growth trend, and signal intensity and Long-term change trend exceed region extremely corresponding critical value when, show working face front
It is geologic anomaly region；When two in effective sound wave, electromagnetic signal and Gas Signal and continuous, fluctuation-type presented above increases
Gesture, and signal intensity or Long-term change trend are when exceeding the dangerous corresponding critical value of dynamic disaster, show dynamic disasters danger.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611138645.7A CN106761931B (en) | 2016-12-12 | 2016-12-12 | Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method |
| PCT/CN2017/110680 WO2018107932A1 (en) | 2016-12-12 | 2017-11-13 | Real-time automatic monitoring system and method for coal-rock power disaster acoustic-electricity gas |
| AU2017375855A AU2017375855B2 (en) | 2016-12-12 | 2017-11-13 | Acousto-electric and gas real-time automatic monitoring system and method for coal-rock dynamic disaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611138645.7A CN106761931B (en) | 2016-12-12 | 2016-12-12 | Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method |
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| Publication Number | Publication Date |
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| CN106761931A true CN106761931A (en) | 2017-05-31 |
| CN106761931B CN106761931B (en) | 2018-08-21 |
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| CN201611138645.7A Active CN106761931B (en) | 2016-12-12 | 2016-12-12 | Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method |
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| Country | Link |
|---|---|
| CN (1) | CN106761931B (en) |
| AU (1) | AU2017375855B2 (en) |
| WO (1) | WO2018107932A1 (en) |
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| Publication number | Publication date |
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| WO2018107932A1 (en) | 2018-06-21 |
| CN106761931B (en) | 2018-08-21 |
| AU2017375855A1 (en) | 2019-07-25 |
| AU2017375855B2 (en) | 2020-10-22 |
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