CN106761931B - 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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- CN106761931B CN106761931B CN201611138645.7A CN201611138645A CN106761931B CN 106761931 B CN106761931 B CN 106761931B CN 201611138645 A CN201611138645 A CN 201611138645A CN 106761931 B CN106761931 B CN 106761931B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 90
- 239000003245 coal Substances 0.000 title claims abstract description 47
- 239000011435 rock Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000523 sample Substances 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001228 spectrum Methods 0.000 claims abstract description 18
- 238000005065 mining Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 13
- 230000002159 abnormal effect Effects 0.000 claims abstract description 9
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- 230000003019 stabilising effect Effects 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 8
- 238000013500 data storage Methods 0.000 description 7
- 230000011664 signaling Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
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- 230000005856 abnormality Effects 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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Classifications
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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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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 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 and monitors power cable energization situation, access current sensor monitors electromechanical equipment working condition；By sound wave, electromagnetism and Gas Signal catastrophe and acoustic-electric spectrum signature, in conjunction with electric current, voltage signal variation identification probe, antenna movement and mining work activities situation；By effective sound wave, electromagnetic signal variation and spectrum signature, in conjunction with abnormal area in front of Gas Signal variation characteristic early warning working face and coal rock dynamic disaster danger.It can be applied to abnormal area monitoring and coal and gas prominent, bump monitoring and warning in front of working face.
Description
Technical field
The present invention relates to a kind of mine safety and monitoring field, especially a kind of coal rock dynamic disaster acoustic-electric gas is real
When automatic monitoring system and method.
Background technology
Coal mine coal rock dynamic disaster includes mainly coal (rock) and gas (methane or carbon dioxide) protrusion, coal and gas pressure
Go out, bump etc..With the increasing of mine excavation depth and mining rate, the coal petrographys such as Gas Outburst, bump are dynamic
Power disaster is on the rise and complexity, disasters danger significantly increase, while some did not had dynamic disaster or sign unobvious originally
Mine also gradually show now, seriously threaten the life security of underground labour and the normal production of mine.
China can be broadly divided into two class of static method and dynamic method for the prediction of coal rock dynamic disaster at present.
Static method is mainly by drilling, some physical indexs are realized in observation drilling, including drilling cuttings multiplying power method, drilling
Gas inrush initial velocity method, drilling cuttings desorption of mash gas index method and other method of aggregative indicator.The continuity of these static method measured values
Difference, measurement need to occupy certain activity duration and space, and quantities is larger, and the activity duration is also longer, have certain shadow to production
It rings；Safety in operating process is poor, and dynamic disaster is easily induced when drilling；The accuracy of prediction is relatively low, easily by artificial and coal
Body influence unevenly distributed.
Dynamic method is predicted mainly by continuously monitoring electromagnetic radiation, sound emission, microseism, gas emission or gas density etc.
Signal carries out analysis prediction, with the obvious advantage compared with static method, has signal continuity good, 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, are influenced
The adaptability of factor and sensibility difference are drilled the interference such as technical process, electromechanical equipment and monitoring sensor movement not by digging
Together and than more serious, it and can not accurately identify.
In recent years, coal petrography electromagnetic radiation, sound wave transmitting (microseism, sound emission, infrasound, ultrasonic wave etc.) and Gas
It is made great progress in terms of characteristic and its application study.
Studies have shown that sound wave, electromagnetic radiation and gas have coal rock dynamic disaster relatively good response, but it is simultaneously non-fully same
It walks, there is complementarity, triplicity can more comprehensively reflect the stress, deformation fracture process, gas of coal and rock between multi signal
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 synchronous high-speed monitoring, the interference signals such as electromechanical equipment, movable sensor and mining work activities by multi signal
Fail to monitor and can not effectively identify automatically automatically, useful signal identification is difficult, and rate of false alarm is high so that current technology can not also
Meet mine and mining work in face of the more means of coal rock dynamic disaster, accurate and effective, auto-real-time monitoring early warning needs, effectively
Signal identification accuracy rate and early warning accuracy rate need to be further increased.
Studies have shown that the catastrophe and its distinctive spectrum signature of sound wave and electromagnetic signal can reflect that electromechanical equipment is dry
It disturbs 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 monitors and accurately identifies various useful signals and interference signal, technical process automatically, and according to the change of multi objective useful signal
The coal rock dynamic disasters such as effective early warning coal and gas prominent are dangerous automatically for change trend, are problems 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 mainly passed through bore detecting or ground extremely to construction, the variation of coal petrography gas etc. in front of working face in the past
The method of ball physical detecting solves, and to small low with intensity of anomaly is smaller regionally detecting and recognition accuracy, lives to digging
Greatly, real-time is poor for dynamic influence, how effectively to monitor and identify construction, high stress, the variation of coal thickness, coal using the means monitored
Regions and the problems anxious to be resolved such as rock mass strength changes and gas bearing is abnormal.
Invention content
Technical problem：The present invention be directed to demand and problems of the prior art, provide 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, non-contact, continuous uninterrupted and long-range monitoring, evaluation and early warning, equipment installation and easy to operate, automation and intelligent journey
Degree is high, and on producing without influence, expense is low.
Technical solution：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 network, monitoring center's machine, monitoring terminating machine, current sensor, 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 of Simultaneous Monitoring instrument connects；The communication interface of acoustic-electric gas Simultaneous Monitoring instrument and communication sub-station it is defeated
Enter end connection, communication sub-station is connected by optical network, interchanger and monitoring center's machine and monitoring terminating machine；Substation power and acoustic-electric
The regulator circuit of gas Simultaneous Monitoring instrument connects；Sonic probe, electromagnetic antenna, firedamp sensor, current sensor and voltage pass
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
It surveys in region.
The acoustic-electric gas Simultaneous Monitoring instrument include sonic probe interface, electromagnetic antenna interface, firedamp sensor interface,
Current sensor interface, signal conditioner, signaling conversion circuit, microprocessor, data storage, is shown voltage sensor interface
Show device and communication interface, regulator circuit；Sonic probe interface is connect with acoustic signals conditioner input terminal, electromagnetic antenna interface with
Electromagnetic signal conditioner input terminal connect, firedamp sensor interface, current sensor interface, voltage sensor interface respectively with phase
Induction signal conversion circuit connects；The output end of signal conditioner and signaling conversion circuit is connect with microprocessor input；Communication
Interface input terminal, display, keyboard and data storage are connect with the I/O interfaces of microprocessor；Output end of microprocessor with
Communication interface connects；Regulator circuit provides required DC power supply for acoustic-electric gas Simultaneous Monitoring instrument and sensor.
Using the automatic monitoring method of coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system, in the survey that needs monitor
Point or working face installation sonic probe, electromagnetic antenna, firedamp sensor, current sensor is installed on power cable and voltage passes
Sensor is respectively connected to the respective sensor input interface of acoustic-electric gas Simultaneous Monitoring instrument, connection communication substation, substation power, friendship
It changes planes and monitoring center's machine；Acoustic-electric gas Simultaneous Monitoring instrument, which synchronizes, receives sound wave, electromagnetism, gas density, voltage and current signals,
And data are uploaded to monitoring center's machine in real time；Pass through sound wave, electromagnetic radiation and gas density live signal and waveform, Neng Goutong
Coal and rock stand under load in front of step reflection working face, deformation fracture, gas porous flow gush out situation, signal waveform feature, spectrum signature and
It changes, and monitors power cable energization situation by voltage signal, current signal monitors electromechanical equipment working condition；Monitoring center
Machine analyzes each signal intensity situation, and the interference of identification electromechanical equipment, mining work activities and probe, antenna shifting set situation and useful signal：
Sound wave, electromagnetic signal mutation when monitoring, and acoustoelectric signal has the spectrum signature of electromechanical equipment interference, voltage and current
When signal also mutates, show that sound wave, electromagnetic signal are caused by electromechanical equipment interference；When the sound wave of monitoring, electromagnetic signal are sent out
There is artificial shifting to set sensor characteristics frequency spectrum, when voltage and current signals do not mutate, show sound for raw mutation, acoustoelectric signal
Wave, electromagnetic signal are caused by sonic probe and electromagnetic antenna movement；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；It monitors obtained acoustic signals and electromagnetic signal filters out interference
After obtain effective acoustic signals and effective electromagnetic signal；It is special by effective acoustic signals and the variation of effective electromagnetic signal and frequency spectrum
Sign, it is dangerous in conjunction with the coal rock dynamic disasters such as abnormal area and coal and gas prominent in front of Gas Signal variation characteristic early warning working face
Property：When continuous or fluctuation-type growth trend is presented in two or more in effective sound wave, electromagnetic signal and Gas Signal, and signal is strong
Degree and Long-term change trend be more than region extremely corresponding critical value when, show to be geologic anomaly region in front of working face；When effective sound wave,
Continuous, fluctuation-type growth trend is presented in two or more in electromagnetic signal and Gas Signal, and signal strength or Long-term change trend are super
When crossing the dynamic disaster corresponding critical value of danger, show dynamic disasters danger.
Advantageous effect and advantage：It being capable of the various signals in overall process monitoring face --- acoustic-electric Gas Signal, automatic identification
Effective and interference signal, and according to abnormal area, early warning in front of acoustic-electric gas useful signal variation tendency automatic identification working face
The danger of coal rock dynamic disaster.
The automatic monitoring of integration for realizing acoustic-electric Gas Signal, ensure that the synchronism of useful signal monitoring；By connecing
Enter voltage sensor monitoring cable energization situation, access current sensor monitors electromechanical equipment working condition, realizes monitoring section
The electrification of electromechanical equipment and working condition in domain, realize the auto-real-time monitoring of the various interference such as electromagnetism and sound wave；Pass through sound
Wave and electromagnetic signal Characteristics of Mutation, spectrum signature, in conjunction with voltage, current monitoring as a result, realizing automatic identification interference signal, spy
Head and antenna situation of movement；Effective acoustic signals and effective electromagnetic signal can have been obtained by monitoring, filtering and data analysis,
By effective acoustic signals and the variation of effective electromagnetic signal and spectrum signature, except automatic monitoring and warning coal and gas prominent of realization etc.
Outside coal rock dynamic disaster danger, abnormal area in front of early warning working face can be also identified, realize exceptions area in front of working face
The real-time automatic monitoring in domain and identification, the degree of automation and the early warning that can significantly improve coal rock dynamic disaster danger are accurate
Rate, reliability.
Description of the drawings
Fig. 1 is the monitoring flow chart of the present invention.
Fig. 2 is the field monitoring instrument layout figure of the present invention.
Fig. 3 is the composition structure chart of present system.
In figure：1, sonic probe；2, electromagnetic antenna；3, firedamp sensor；4, current sensor；5, voltage sensor；6、
Acoustic-electric gas Simultaneous Monitoring instrument；7, communication sub-station；8, substation power；9, optical network；10, monitoring center's machine；11, terminal is monitored
Machine；12, cable；13, interchanger.
Specific implementation mode
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 network, monitoring center
Machine, monitoring terminating 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 of gas Simultaneous Monitoring instrument 6 connects；The communication interface of acoustic-electric gas Simultaneous Monitoring instrument 6 with communicate point
Stand 7 input terminal connection, communication sub-station 7 passes through optical network 9 and interchanger 13 and monitoring center's machine 10 and monitoring terminating machine 11 company
It connects；Substation power 8 is connect with the regulator circuit of acoustic-electric gas Simultaneous Monitoring instrument 6；Sonic probe 1, electromagnetic antenna 2, gas pass
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.
The acoustic-electric gas Simultaneous Monitoring instrument include sonic probe interface, electromagnetic antenna interface, firedamp sensor interface,
Current sensor interface, signal conditioner, signaling conversion circuit, microprocessor, data storage, is shown voltage sensor interface
Show device and communication interface, regulator circuit；Sonic probe interface is connect with acoustic signals conditioner input terminal, electromagnetic antenna interface with
Electromagnetic signal conditioner input terminal connect, firedamp sensor interface, current sensor interface, voltage sensor interface respectively with phase
Induction signal conversion circuit connects；The output end of signal conditioner and signaling conversion circuit is connect with microprocessor input；Communication
Interface input terminal, display, keyboard and data storage are connect with the I/O interfaces of microprocessor；Output end of microprocessor with
Communication interface connects；Regulator circuit provides required DC power supply for acoustic-electric gas Simultaneous Monitoring instrument and sensor.
Part composition is explained respectively below, i.e.,：1, electromagnetic antenna；2, sonic probe；3, signal conditioner；4, sound
Electric gas Simultaneous Monitoring instrument；5, regulator circuit；6, communication interface；7, communication sub-station；8, 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 has the characteristics that orientation.The upper limiting frequency of wide frequency antenna is not less than 500kHz, and bandwidth is not less than 500kHz, and high sensitivity 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 for antenna and probe received signal to be amplified, filters, amplification factor is adjustable, and output is straight
The analog-digital converter picked into microprocessor is converted.
4) acoustic-electric gas Simultaneous Monitoring instrument
By microprocessor, signal conditioner, signal adapter, display, data storage, signal output apparatus, power supply,
The compositions such as button, to realize to the synchronous acquisition of sound wave, electromagnetism, gas, electric current, voltage signal and waveform, display, storage 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 processes, and generates record file in the machine, while real
When export to ground monitoring central record；
F) data store：Using SD/TF cards as storage device, data storage capacity is more than 8GB；
5) regulator circuit
This monitor is powered by external power supply, 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, are used for digital circuits section.Pass through width
Control source power module K7812 provides fixed+12V power supplys, is used for signal conditioner part.
6) communication interface
There are five types of mode signal output, respectively RS485 signaling interfaces, 4~20mA signaling interfaces, 200~1000Hz for tool
Signaling interface, CAN interface, Ethernet interface are suitable for different monitoring system 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 forms.
The present invention automatic monitoring method be：
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 synchronize coal and rock stand under load, deformation fracture, gas in front of reflection working face and ooze
Stream gushes out situation, signal waveform feature, spectrum signature and its variation；It accesses voltage sensor and monitors power cable energization situation,
It accesses current sensor and monitors electromechanical equipment working condition.
By sound wave, electromagnetism and Gas Signal Characteristics of Mutation and acoustoelectric signal spectrum signature, in conjunction with voltage, current monitoring knot
The interference of fruit identification electromechanical equipment, sensor shifting is set and working face digging disturbing influence：When the sound wave of monitoring, electromagnetic signal occur to dash forward
Become, and acoustoelectric signal have electromechanical equipment interference spectrum signature, when voltage and current signals also mutate, show sound wave,
Electromagnetic signal is caused by electromechanical equipment interference；When the sound wave of monitoring, electromagnetic signal mutate, there is acoustoelectric signal artificial shifting to set
Sensor characteristics frequency spectrum when voltage and current signals do not mutate, shows that sound wave, electromagnetic signal are sonic probe and electromagnetism day
Caused by line movement；When there is mutation to increase and when stabilising decay variation characteristic for sound wave, electromagnetism and Gas Signal, show working face into
Row mining work activities；It monitors obtained acoustic signals and obtains effective acoustic signals and effectively electricity after electromagnetic signal filtering interference signals
Magnetic signal.
In measuring point or working face installation sonic probe, electromagnetic antenna, the firedamp sensor for needing to monitor, electromagnetic antenna is had
Effect receives the area to be monitored of direction alignment coal and rock, and fixes antenna, and antenna is not more than 30 meters at a distance from tested region
It is advisable；Sonic probe monitors acoustic signals in coal and rock according to the corresponding coupling of surveyed Frequency Band Selection and fixed form, and gas passes
Sensor according to《Safety regulations in coal mine》Requirement install；Current sense is installed on the power cable of electromechanical equipment in monitoring region
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 are arranged acoustic-electric gas Simultaneous Monitoring instrument running parameter, such as monitor channel, triggering mode, sample frequency, storage side
Case, communication mode etc., parameter can be also arranged 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 shifting set situation and effectively
Signal；By effective acoustic signals and the variation of effective electromagnetic signal and spectrum signature, in conjunction with Gas Signal variation characteristic early warning work
The square coal rock dynamic disasters such as abnormal area and coal and gas prominent are dangerous in face of making, when effective sound wave, electromagnetic signal and gas
Continuous or fluctuation-type sustainable growth trend is presented in two or more in signal, and signal strength and Long-term change trend are less than region exception
When corresponding critical value, show to be geology or stress abnormality region in front of working face；When effective sound wave, electromagnetic signal and Gas Signal
Continuous, fluctuation-type growth trend is presented in middle two or more, and signal strength or Long-term change trend are more than that corresponding dynamic disaster is dangerous
When the corresponding critical value of property, show dynamic disasters danger.
Claims (1)
1. a kind of automatic monitoring method using coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system, automatic monitoring system
Including：Sonic probe, electromagnetic antenna, firedamp sensor, communication sub-station, substation power, optical network, monitoring center's machine, monitoring are eventually
Terminal, acoustic-electric gas Simultaneous Monitoring instrument, current sensor and voltage sensor；Sonic probe and electromagnetic antenna, current sensor,
Voltage sensor and firedamp sensor are connect with the respective sensor input interface of acoustic-electric gas Simultaneous Monitoring instrument；Acoustic-electric gas is same
The input terminal of the communication interface and communication sub-station that walk monitor connects, and communication sub-station passes through interchanger and optical network and monitoring center
Machine is connected with monitoring terminating machine；Substation power is connect with the regulator circuit of acoustic-electric gas Simultaneous Monitoring instrument；Sonic probe, electromagnetism day
Line, firedamp sensor, current sensor and voltage sensor and acoustic-electric gas Simultaneous Monitoring instrument connect and compose monitor, Duo Gejian
Device is surveyed to be arranged in down-hole mining working face or tunnel monitor region；
It is characterized in that：In measuring point or working face installation sonic probe, electromagnetic antenna, the firedamp sensor for needing to monitor, dynamic
Current sensor and voltage sensor are installed on power cable, are respectively connected to the respective sensor input of acoustic-electric gas Simultaneous Monitoring instrument
Interface, connection communication substation, substation power, interchanger and monitoring center's machine；Acoustic-electric gas Simultaneous Monitoring instrument synchronization reception sound wave,
Electromagnetism, gas density, voltage and current signals, and data are uploaded to monitoring center's machine in real time；By sound wave, electromagnetic radiation and
Gas density live signal waveform can synchronize coal and rock stand under load, deformation fracture, gas porous flow in front of reflection working face and gush out feelings
Condition, signal waveform feature, spectrum signature and its variation monitor power cable energization situation, current signal prison 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 shifting set situation and useful signal：Sound wave, electromagnetic signal mutation when monitoring, and sound wave, electromagnetic signal have machine
The spectrum signature of electric equipment interference when voltage and current signals also mutate, shows that sound wave, electromagnetic signal are dry for electromechanical equipment
Caused by disturbing；When the sound wave of monitoring, electromagnetic signal mutate, there is artificial shifting to set sonic probe and electromagnetism for sound wave, electromagnetic signal
Antenna features frequency spectrum when voltage and current signals do not mutate, shows that sound wave, electromagnetic signal are sonic probe and electromagnetic antenna
Caused by movement；When sound wave, electromagnetism and Gas Signal have mutation growth and stabilising decay variation characteristic, show that working face carries out
Mining work activities；It monitors obtained acoustic signals and electromagnetic signal filters out and obtains effective acoustic signals and effective electromagnetism letter after interfering
Number；By effective acoustic signals and the variation of effective electromagnetic signal and spectrum signature, work in conjunction with Gas Signal variation characteristic early warning
Square abnormal area and coal rock dynamic disaster are dangerous in front：When two or more is in effective sound wave, electromagnetic signal and Gas Signal
Now continuous or fluctuation-type growth trend, and signal strength and Long-term change trend be more than region extremely corresponding critical value when, show work
Side is geologic anomaly region in front；Continuous, fluctuation-type increasing is presented when more than two in effective sound wave, electromagnetic signal and Gas Signal
Long trend, and when signal strength or Long-term change trend are more than dynamic disaster dangerous corresponding critical value, 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 |
| 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 |
| 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 |
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761931A CN106761931A (en) | 2017-05-31 |
| CN106761931B true CN106761931B (en) | 2018-08-21 |
Family
ID=58880010
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| Application Number | Title | Priority Date | Filing Date |
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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 |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106761931B (en) |
| AU (1) | AU2017375855B2 (en) |
| WO (1) | WO2018107932A1 (en) |
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|---|---|---|---|---|
| CN106761931B (en) * | 2016-12-12 | 2018-08-21 | 中国矿业大学 | Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method |
| CN107448188B (en) * | 2017-10-12 | 2020-06-12 | 中国矿业大学 | Coal bed gas parameter while-drilling test method and device |
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| AU2017375855A1 (en) | 2019-07-25 |
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