CN103782140A - Sensor for probing geological disaster and monitoring and alarming device thereof - Google Patents
Sensor for probing geological disaster and monitoring and alarming device thereof Download PDFInfo
- Publication number
- CN103782140A CN103782140A CN201180072790.9A CN201180072790A CN103782140A CN 103782140 A CN103782140 A CN 103782140A CN 201180072790 A CN201180072790 A CN 201180072790A CN 103782140 A CN103782140 A CN 103782140A
- Authority
- CN
- China
- Prior art keywords
- sensor
- permanent magnet
- fixed plate
- optical fiber
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 52
- 239000000835 fiber Substances 0.000 claims description 32
- 239000012528 membrane Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 16
- 230000005674 electromagnetic induction Effects 0.000 abstract description 5
- 230000005389 magnetism Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 30
- 239000003245 coal Substances 0.000 description 23
- 230000005670 electromagnetic radiation Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002463 transducing effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000005461 Bremsstrahlung Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G01V1/01—
Abstract
A sensor for probing a geological disaster and a monitoring and alarming device thereof comprise three fixed plates (1, 2, 3). Each fixed plate is provided with a through hole in the middle. A vibration diaphragm (8) is mounted between the first fixed plate (1) and the second fixed plate (2). A first permanent magnet (9) is disposed on an upper surface of the vibration diaphragm (8). A second permanent magnet (10) is disposed on a lower surface of the vibration diaphragm (8). A vibration beam (11) and an optical fiber (12) are mounted between the second fixed plate (2) and the third fixed plate (3). A third permanent magnet (14) is disposed on an upper surface of the vibration beam (11) located at the through hole. An optical fiber grating (13) is mounted on the optical fiber (12) located at the through hole. A fourth permanent magnet (15) is disposed on the optical fiber grating (13). The third permanent magnet (14) and the fourth permanent magnet (15) are located in the same vertical plane. Adjacent magnetic poles of the second permanent magnet (10) and the third permanent magnet (14) are the same in magnetism. The device can probe three physical quantities of geological changes at the same time: micro-vibration, electro-magnetic induction, and acoustic emission change, thereby improving the forecast accuracy and improving the anti-interference capability.
Description
It is a kind of sensor and its monitoring alarm for detecting geological disaster the present invention relates to sensor and geological disaster detection alarm technical field.
Due to the geological disasters such as earthquake, colliery, mine down-hole bump, coal and gas prominent, rock slope to the mankind cause it is very harmful, therefore, information of the countries in the world all before these geological disasters occur for effort exploratory development is detected, and the scheme of energy and alarm, to reach the purpose that can minimize the Loss of Life and property that these geological disasters are caused.According at present it has been reported that data it can be seen from, such technical scheme is divided into two major classes：One class is the detection alarm device of electronic component and electronic circuit composition, the deficiency of this device is, the more difficult thousands of rice in embedment underground of sensor, and the place passed through in transmission line has random electromagnetic interference, therefore existing electric system not can determine that the sensing amount of sensor or the electromagnetic interference amount of transmitting procedure.In addition, existing electric system sensor needs power supply, there is ground host machine to cause complicated and unstable to sensor power supply source, due also to it is used with sensing temperature, sound wave and the sensor of displacement, it can not ensure normal work at a temperature of 200-300 DEG C of underground, therefore, detection data is relatively inaccessible to accurately；Another kind of is the device using optical fiber grating sensing underground signal, the deficiency of this device is, sensor only transmits the change of pressure, displacement and temperature, with the generation of this determination geological disaster, this detection alarm device is accurate for the extremely difficult detection of the incident gas explosion accident of underground coal mine, and the gas explosion accident for causing underground coal mine is difficult to avoid.
An object of the present invention is, a kind of sensor for detecting earthquake disaster is provided, it overcomes the deficiencies in the prior art, makes it while three geology change physical quantity of microseismic activity, electromagnetic induction and sound emission change is detected, so as to improve accuracy of the forecast, improve antijamming capability.
The second object of the present invention is to provide a kind of Geological Hazards Monitoring warning device, and the signal intensity situation before accurately and timely geological disaster is occurred that enables the device to is reached on the ground.The geological disasters such as detection earthquake, colliery, mine down-hole bump, coal and gas prominent are made to obtain signal promptly and accurately.
The present invention to achieve these goals, is achieved through the following technical solutions：A kind of sensor for detecting geological disaster, including the first fixed plate, second fixed plate and the 3rd fixed plate, three fixed plates are mutually permanently connected, through hole is opened up in the middle of each fixed plate, vibration membrane is installed between first fixed plate basal surface and the second fixed plate upper surface, permanent magnet is set on the vibration membrane at through hole position, the upper surface of vibration membrane sets the first permanent magnet, the lower surface of vibration membrane sets the second permanent magnet, the magnetic pole that first permanent magnet and the second permanent magnet are contacted with vibration membrane is different, vibrations beam and optical fiber are installed between the second fixed plate basal surface and the 3rd fixed plate upper surface, vibrations beam upper surface positioned at through hole position sets the 3rd permanent magnet, fiber grating is installed on the optical fiber at through hole position, fiber grating is connected with vibrations beam, 4th permanent magnet is set on fiber grating, 3rd permanent magnet and the 4th permanent magnet are located in same vertical plane, the adjacent magnetic pole of two permanent magnets is different, the second permanent magnet magnetic pole adjacent with the 3rd permanent magnet is identical.First fixed plate, the second fixed plate are identical with the through-hole diameter opened up in the 3rd fixed plate, the center line of three through holes is overlapped, first permanent magnet, the second permanent magnet, the 3rd permanent magnet and the 4th permanent magnet are located in same vertical plane, the vertical center line of four blocks of permanent magnets is overlapped, and four blocks of permanent magnets are respectively positioned on the centre of through hole.Described the first fixed plate, the second fixed plate are identical with the 3rd fixed plate shape and size, are fixed using bolt, and three fixed plates are made using non-magnetic stainless steel or non-electromagnetic wave shielding material.The fiber grating is connected with vibrations beam using binding agent.
A kind of monitoring alarm of sensor production using detection geological disaster, including housing, first sensor is installed, the optical fiber of first sensor is connected with mine optical fiber formula audio measuring equipment, and mine optical fiber formula audio measuring equipment is connected with signal processor and warning device in housing.The sensing device that detection geology variable signal is interconnected to constitute using three sensors is installed in described housing, first sensor is arranged horizontally, the center line and horizontal plane of through hole on first sensor, second sensor is located at the top of first sensor and perpendicular to first sensor, the center line and plane-parallel of the second through hole in second sensor, 3rd sensor is located at the top of second sensor, the centerline parallel of the second through hole on the center line and second sensor of third through-hole in 3rd sensor is simultaneously arranged in 90 °, optical fiber on three sensors is connected with mine optical fiber formula audio measuring equipment, mine optical fiber formula audio measuring equipment is connected with signal processor and warning device.The sensing device for the detection geology variable signal that three sensors are interconnected to constitute is inserted below the 5000m of underground by pipeline, and optical fiber is connected with underground sensing device, and is connected simultaneously with the mine optical fiber formula audio measuring equipment on ground.First sensor, second sensor are identical with 3rd sensor structure, and the optic fiber grating wavelength installed on each sensor is different, and three sensors are using an optical fiber concatenation.
Applicant has found by research all the year round, in the presence of geology pressure change, causes the change of geological stress, and this stress variation is primary power, and the organic matter techonosphere in stratum has triggered " thunder and lightning " effect.The formation of " thunder and lightning " effect in coal and rock is that after blowing out, coal and rock produces huge compression shock, also generates stress impact.Interaction between particle can produce many effects, including bremsstrahlung or auger effect, transmitting X-ray line and auger electrons.It also occur that many effects under surge, including electronics can the light radiation of band mechanism, friction effect, piezo-electric effect, galvanomagnetic-effect etc..The synthesis result of these effects is：Electromagnetic radiation and electronics, the interaction of ion are generated in rock mass.First Secondary Shocks of these effects cause coal and rock material particle to move or interact.The result of this interaction causes the macromolecular structure of coal to produce change, and the macromolecular structure part alkyl of coal is broken, part hydrogen（H-）It is broken, alkyl and hydrogen（H-）With reference to the new methane of generation（CH4）, cause mass volume to expand.Coal and rock volumetric expansion can facilitate the further increasing of its stress, and stress variation effect is amplified, and forms particle excitated for the second time.This comprehensive effect repeatedly is the positive feedback concussion amplification system of a system.Beginning, development and the end of this system observe the aerial thunder and lightning in day the same all the time along with various radiation effects similar to us.This whole evolution is referred to as " thunder and lightning " effect.This " thunder and lightning " effect can cause the further Amplification of organic matter techonosphere in stratum, form the positive feedback Amplification effect of Amplification.This Amplification effect can trigger destructive bump in colliery, mine, and coal and gas prominent can be also triggered in underground coal mine getting working face.When this answers force feedback enlarge-effect to continue to amplify, then it can cause the earthquake of big rank.In order to promptly and accurately detect the number of times and energy level of " thunder and lightning " effect occurred in coal seam, present invention firstly provides the sensor that can detect microseismic activity, sound emission and electromagnetic induction three physical quantitys of change, not by electromagnetic interference in signals transmission, it can remove the interference in transmitting procedure first, three physical quantitys of sensor detection can be synthesized accurately on a time coordinate axle, can accurately detect the number of times and energy level that " thunder and lightning " effect occurs in coal seam.Sensor of the present invention can provide accurate signal by the change simultaneous transmission of three physical quantitys to ground monitoring warning device to the generation for judging geological disaster.Particularly when coal and gas prominent, electromagnetic radiation increases suddenly, while acoustic emission phenomenon is also significantly increased simultaneously, can detect and monitor the change of the two physical quantitys in time, alarm promptly and accurately can be made to coal and gas prominent.Because sensor of the present invention can be realized while detecting the two physical quantitys, therefore, it can be combined with other transmitting devices sends the variable signal of electromagnetic radiation and sound emission into monitoring room in advance, the serious consequence caused to coal and gas prominent can be taken measures to prevent in time, and underground coal mine can be avoided to occur major accident.
The present invention is on the basis of there is provided sensor, use a kind of of the sensor production to geological disaster can shift to an earlier date the device of monitoring, alarming there is provided a kind of, the device can insert the thousands of rice in underground, and microseismic activity, three physical quantitys of electromagnetic induction and sound emission can also be detected simultaneously in three different directions, the accuracy of detectable signal is ensure that, reliable signal is provided for ground monitoring alarm.When the change of two physical quantitys of electromagnetic radiation and sound emission has been triggered due to " thunder and lightning " effect in coal body deep at range sensor, the propagation of electromagnetic radiation is no time delayses, and acoustic emission signal needs time delayses, its spread speed is calculated with 1000 meter per seconds, and the delay of two amounts is 20 milliseconds.Fibre optical sensor of the present invention can intactly record this signal, and can determine that the number of times that " thunder and lightning " effect occurs, the position that " thunder and lightning " effect occurs can be determined by location Calculation by multiple sensors, so it is assured that the development trend of " thunder and lightning " effect, judge whether " thunder and lightning " effect amplifies, reach the purpose of prediction coal and gas prominent.
Monitoring alarm of the present invention, the signal occurred when changing to geology such as earthquake, colliery, mine down-hole bump, coal and gas prominent, rock slopes that can be promptly and accurately is detected, and signal feeding monitoring room is provided by authentic data for pre- Geological disaster prevention by optical fiber cable, mine optical fiber formula audio measuring equipment, signal processor and warning device.
Accompanying drawing 1 is the structural representation of sensor of the present invention；Accompanying drawing 2 is the overlooking the structure diagram of accompanying drawing 1；Accompanying drawing 3 is the present invention looks up structural representation of accompanying drawing 1；Accompanying drawing 4 is the monitoring alarm structural representation for the detection geological disaster that the present invention is manufactured using sensor.
Compareing drawings and Examples, the present invention will be further described.
The present invention for complete to occur the first purpose there is provided the technical scheme of sensor of detection geological disaster a kind of be：The structure of the sensor includes：First fixed plate 1, the second fixed plate 2 and the 3rd fixed plate 3, three fixed plates are mutually permanently connected, through hole is opened up in the middle of each fixed plate, as shown in figure 1, sequence number 4,5,6 is followed successively by the through hole in the first fixed plate 1, the through hole on through hole and the 3rd fixed plate 3 in the second fixed plate 2 respectively in Fig. 1.Vibration membrane 8 is installed between the basal surface of first fixed plate 1 and the upper surface of the second fixed plate 2, permanent magnet is set on the vibration membrane 8 at through hole position, the upper surface of vibration membrane 8 sets the first permanent magnet 9, the lower surface of vibration membrane 8 sets the second permanent magnet 10, the magnetic pole that first permanent magnet 9 and the second permanent magnet 10 are contacted with vibration membrane 8 is different, for example：The S poles of first permanent magnet 9 are in contact with vibration membrane 8, and the N poles of the second permanent magnet 10 are in contact with vibration membrane 8.Vibrations beam 11 and optical fiber 12 are installed between the basal surface of second fixed plate 2 and the upper surface of the 3rd fixed plate 3, the upper surface of vibrations beam 11 positioned at through hole position sets the 3rd permanent magnet 14, fiber grating 13 is installed on the optical fiber 12 at through hole position, fiber grating 13 is connected with vibrations beam 11,4th permanent magnet 15 is set on fiber grating 13,3rd permanent magnet 14 and the 4th permanent magnet 15 are located in same vertical plane, and the adjacent magnetic pole of two permanent magnets is different, for example：The N poles of 3rd permanent magnet 14 are in contact with vibrations beam 11, and the S poles of the 4th permanent magnet 15 are in contact with fiber grating 13, and the second permanent magnet 10 magnetic pole adjacent with the 3rd permanent magnet 14 is identical.
The further scheme of inventive sensor is：First fixed plate 1, the second fixed plate 2 are identical with the through-hole diameter opened up in the 3rd fixed plate 3, the center line of three through holes is overlapped, first permanent magnet 9, the second permanent magnet 10, the 3rd permanent magnet 14 and the 4th permanent magnet 15 are located in same vertical plane, the vertical center line of four blocks of permanent magnets is overlapped, four blocks of permanent magnets are respectively positioned on the centre of through hole, further ensure the accuracy of the vibrations, electromagnetic induction and the acoustic emission signal that are produced during sensing geology change.
The first fixed plate 1, the second fixed plate 2 on sensor of the present invention is identical with the shape and size of the 3rd fixed plate 3, fixed using bolt, three fixed plates are made using non-magnetic stainless steel or non-electromagnetic wave shielding material, on the basis of it ensure that transducing signal accuracy, the robustness and durability of sensor is set further to strengthen, to adapt to the geological environment of complexity.
Fiber grating 13 of the present invention is connected with vibrations beam 11 using binding agent, is a kind of preferred scheme, is easy to processing and manufacturing.
The present invention in order to complete goal of the invention two provide technical schemes be, a kind of monitoring alarm of sensor production using detection geological disaster of the present invention, it includes a housing 24, one first sensor 20 can be installed in housing 24, the optical fiber of first sensor 20 is connected with mine optical fiber formula audio measuring equipment 17, and mine optical fiber formula audio measuring equipment 17 is connected with signal processor and warning device.
The sensing device of detection geology variable signal of the present invention, it is optimal selection scheme to be connected with each other transducing signal using three sensors, and its concrete structure is：It has a housing 24, the sensor of three interconnections is installed in housing 24, housing 24 is made using non-magnetic stainless steel material, first sensor 20 is arranged horizontally, the center line and horizontal plane of through hole 21 on first sensor 20, second sensor 19 is located at the top of first sensor 20 and perpendicular to first sensor 20, the center line and plane-parallel of the second through hole 22 in second sensor 19, 3rd sensor 18 is located at the top of second sensor 19, the centerline parallel of the second through hole 22 on the center line and second sensor 19 of third through-hole 23 in 3rd sensor 18 is simultaneously arranged in 90 °, optical fiber on three sensors is connected with mine optical fiber formula audio measuring equipment 17, mine optical fiber formula audio measuring equipment 17 is connected with signal processor and warning device.The sensing device for the detection geology variable signal that three sensors are interconnected to constitute is inserted below the 5000m of underground by pipeline, and optical fiber is connected with underground sensing device, and is connected simultaneously with the mine optical fiber formula audio measuring equipment 17 on ground.
Further scheme is the present invention：First sensor 20, second sensor 19 are identical with the structure of 3rd sensor 18, and the optic fiber grating wavelength installed on each sensor is different, and three sensors are connected after being concatenated using an optical fiber with mine optical fiber formula audio measuring equipment 17.Optical fiber on each sensor individually can also be connected with mine optical fiber formula audio measuring equipment 17.
The structure of three sensors used in the warning device of the present invention to Geological Hazards Monitoring is identical, as Figure 1-3, each sensor has the first fixed plate 1, second fixed plate 2 and the 3rd fixed plate 3, three fixed plates are mutually permanently connected, through hole is opened up in the middle of each fixed plate, vibration membrane 8 is installed between the basal surface of first fixed plate 1 and the upper surface of the second fixed plate 2, permanent magnet is set on the vibration membrane 8 at through hole position, the upper surface of vibration membrane 8 sets the first permanent magnet 9, the lower surface of vibration membrane 8 sets the second permanent magnet 10, the magnetic pole that first permanent magnet 9 and the second permanent magnet 10 are contacted with vibration membrane 8 is different, vibrations beam 11 and optical fiber 12 are installed between the basal surface of second fixed plate 2 and the upper surface of the 3rd fixed plate 3, the upper surface of vibrations beam 11 positioned at through hole position sets the 3rd permanent magnet 14, fiber grating 13 is installed on the optical fiber 12 at through hole position, fiber grating 13 is connected with vibrations beam 11, 4th permanent magnet 15 is set on fiber grating 13, 3rd permanent magnet 14 and the 4th permanent magnet 15 are located in same vertical plane, the adjacent magnetic pole of two permanent magnets is different, second permanent magnet 10 magnetic pole adjacent with the 3rd permanent magnet 14 is identical.
Vibration membrane of the present invention, the structure of permanent magnet are known technology, and permanent magnet is made from Curie temperature for 400 DEG C of magnetic material.
The optical signal of the invention for sensing three sensors is the optical signal for extracting three sensor different wave lengths respectively by mine optical fiber formula audio measuring equipment 17, then changes the transducing signal that three sensors are extracted in conversion with light amplitude change conversion respectively by optical wavelength.The present invention detection two physical quantitys of electromagnetic radiation and sound emission principle be：In the sensing characteristicses of sensor, " thunder and lightning " effect has high-frequency percussion to the electromagnet of sensor, and its frequency response is more than 20kHz, and amplitude is larger.The response frequency of acoustic emission sensor is less than 2000Hz, in underground, the sound emission shock momentum of coal petrography medium-high frequency is absorbed, sound emission is propagated slower than propagating electromagnetic radiation, the two physical quantitys have time delayses different with frequency, therefore can distinguish two physical quantitys by the mine optical fiber formula audio measuring equipment 17 on well.
There are three sensing elements on sensor of the present invention, i.e.,：Vibration membrane, vibrations beam, permanent magnet.Vibration membrane is shaken by voice sending sensor, because vibration membrane is located between the first permanent magnet 9 and the second permanent magnet 10, so when geological condition change produces acoustic emission signal, making vibration membrane produce vibrations by permanent magnet mass.Because the second permanent magnet 10 is identical with the two neighboring magnetic pole of the 3rd permanent magnet 14, magnetic is opposite, therefore, the vibrations of vibration membrane are sensed on vibrations beam 11 and fiber grating 15 by the 3rd permanent magnet 14, fiber grating 15 is also generated the identical changed with sound emission and are shaken.Vibrations beam 11 on sensor is used for the vibration-sensing signal produced when geological condition changes, when local qualitative changeization produces vibrations, due to the effect of the permanent magnet mass on vibrations beam 11 and fiber grating 13, vibrations beam 11 is set to produce vibrations, while fiber grating 13 also shakes therewith.When the electromagnetic radiation of sensor external environment changes, for example：Coal and gas prominent electromagnetic radiation can be increased considerably suddenly, at this moment, and the permanent magnet on sensor can produce vibrations, so that vibrations beam 11 and fiber grating 15 produce vibrations, this vibrations pass through optical fiber transmission signal.The above three physical quantity that sensor is detected, signal is transmitted by the vibrations of fiber grating 13, the reflected light of fiber grating 13 can be made to produce the change of luminous intensity when fiber grating 13 shakes, reflected light sends alarm by optical fiber by the mining device on the incoming ground of signal, then by signal processor and warning device.The present invention is synthesized two layers of shock-effect by the magnetic action of electromagnet using double-deck shock-effect, expands the frequency response range of sensor.The effect of electromagnet is：External electromagnetic radiation effect is sensed, two layers of shock-effect of sensor is synthesized, the shock damping parameter of sensor can be adjusted by adjusting the magnetic size of permanent magnet.
The trade name of mine optical fiber formula audio measuring equipment 17 of the present invention is also referred to as：Optical fiber audio demodulation instrument, its product type is ZYQ750.
The function of mine optical fiber formula audio measuring equipment 17 is：1. the wavelength that fiber grating can be received is 1520nm-1560nm, and the amplitude of wavelength and wavelength change is converted into electric signal；2. frequency response range is 1H-100KHZ；3. the audio signal more than 20KHZ can be extracted by the frequency analysis of electric signal, ELECTROMAGNETIC RADIATION SIGNATURE is determined；4. the 200HZ-2000HZ extracted signal is acoustic emission signal；5. the 1HZ-200HZ extracted signal is microseismic activity signal；6. the optical signal of sensor different wave length can be extracted respectively by optical filter.
Optic fiber grating wavelength in the first sensor 20 of the present invention being monitored to geological disaster in warning device is that the wavelength that optic fiber grating wavelength in 1545nm, second sensor 19 is fiber grating in 1540nm, 3rd sensor 18 is 1550nm.
The relevant parameter of each part of sensor of the present invention：Vibration membrane can use 0.08-0.15mm stainless steel films；The diameter 20mm-50mm of through hole in fixed plate；Vibrations beam length L is greater than the diameter of through hole in fixed plate, and the width of vibrations beam is more than width, thickness or the length of permanent magnet, and the thickness S of vibrations beam is 0.05mm-1mm, and vibrations beam is made using stainless steel material or can also made using soft material；Permanent magnet selects disc magnet, and its thickness is 0.5mm-1mm, a diameter of 2mm-3mm.7 be bolt in figure, and 16 be optical cable, and 25 be mining horn mouth, and 26 be signal processor, and 27 be alarm.
Claims (8)
- A kind of sensor for detecting geological disaster, it is characterised in that：Including the first fixed plate（1）, the second fixed plate（2）With the 3rd fixed plate（3）, three fixed plates are mutually permanently connected, and through hole, the first fixed plate are opened up in the middle of each fixed plate（1）Basal surface and the second fixed plate（2）Vibration membrane is installed between upper surface（8）, the vibration membrane positioned at through hole position（8）Upper setting permanent magnet, vibration membrane（8）Upper surface set the first permanent magnet（9）, vibration membrane（8）Lower surface set the second permanent magnet（10）, the first permanent magnet（9）With the second permanent magnet（10）With vibration membrane（8）The magnetic pole of contact is different, the second fixed plate（2）Basal surface and the 3rd fixed plate（3）Vibrations beam is installed between upper surface（11）And optical fiber（12）, the vibrations beam positioned at through hole position（11）Upper surface sets the 3rd permanent magnet（14）, the optical fiber positioned at through hole position（12）Upper installation fiber grating（13）, fiber grating（13）With vibrations beam（11）It is connected, fiber grating（13）The 4th permanent magnet of upper setting（15）, the 3rd permanent magnet（14）With the 4th permanent magnet（15）In same vertical plane, the adjacent magnetic pole of two permanent magnets is different, the second permanent magnet（10）With the 3rd permanent magnet（14）Adjacent magnetic pole is identical.
- A kind of sensor for detecting geological disaster according to claim 1, it is characterised in that：First fixed plate（1）, the second fixed plate（2）With the 3rd fixed plate（3）On the through-hole diameter that opens up it is identical, the center line of three through holes is overlapped, the first permanent magnet（9）, the second permanent magnet（10）, the 3rd permanent magnet（14）With the 4th permanent magnet（15）In same vertical plane, the vertical center line of four blocks of permanent magnets is overlapped, and four blocks of permanent magnets are respectively positioned on the centre of through hole.
- A kind of sensor for detecting geological disaster according to claim 2, it is characterised in that：First fixed plate（1）, the second fixed plate（2）With the 3rd fixed plate（3）Shape and size are identical, fixed using bolt, and three fixed plates are made using non-magnetic stainless steel or non-electromagnetic wave shielding material.
- A kind of sensor for detecting geological disaster according to claim 1, it is characterised in that：Fiber grating（13）With vibrations beam（11）Connected using binding agent.
- A kind of monitoring alarm of the sensor production of detection geological disaster described in use claim any one of 1-4, it is characterised in that：Including housing（24）, housing（24）Interior installation first sensor（20）, first sensor（20）Optical fiber and mine optical fiber formula audio measuring equipment（17）Connection, mine optical fiber formula audio measuring equipment（17）It is connected with signal processor and warning device.
- The monitoring alarm of sensor production according to claim 5 using detection geological disaster, it is characterised in that：Housing（24）It is interior that the sensing device that detection geology variable signal is interconnected to constitute using three sensors, first sensor are installed（20）It is arranged horizontally, first sensor（20）Upper through hole（21）Center line and horizontal plane, second sensor（19）Positioned at first sensor（20）Top and perpendicular to first sensor（20）, second sensor（19）On the second through hole（22）Center line and plane-parallel, 3rd sensor（18）Positioned at second sensor（19）Top, 3rd sensor（18）On third through-hole（23）Center line and second sensor（19）On the second through hole（22）Centerline parallel and in 90 ° of arrangements, optical fiber and mine optical fiber formula audio measuring equipment on three sensors（17）Connection, mine optical fiber formula audio measuring equipment（17）It is connected with signal processor and warning device.
- The monitoring alarm of sensor production according to claim 6 using detection geological disaster, it is characterised in that：The sensing device for the detection geology variable signal that three sensors are interconnected to constitute is inserted below the 5000m of underground by pipeline, and optical fiber is connected with underground sensing device, and simultaneously with the mine optical fiber formula audio measuring equipment on ground（17）Connection.
- The monitoring alarm of sensor production according to claim 6 using detection geological disaster, it is characterised in that：First sensor（20）, second sensor（19）And 3rd sensor（18）Structure is identical, and the optic fiber grating wavelength installed on each sensor is different, and three sensors are using an optical fiber concatenation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180072790.9A CN103782140A (en) | 2011-07-12 | 2011-10-25 | Sensor for probing geological disaster and monitoring and alarming device thereof |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110193820.3 | 2011-07-12 | ||
| CN201110193820 | 2011-07-12 | ||
| CN201180072790.9A CN103782140A (en) | 2011-07-12 | 2011-10-25 | Sensor for probing geological disaster and monitoring and alarming device thereof |
| PCT/CN2011/081249 WO2013007071A1 (en) | 2011-07-12 | 2011-10-25 | Sensor for probing geological disaster and monitoring and alarming device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103782140A true CN103782140A (en) | 2014-05-07 |
Family
ID=46291421
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110327463.5A Active CN102520439B (en) | 2011-07-12 | 2011-10-25 | Geological disaster-detecting sensor and monitoring and warning system thereof |
| CN201180072790.9A Pending CN103782140A (en) | 2011-07-12 | 2011-10-25 | Sensor for probing geological disaster and monitoring and alarming device thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110327463.5A Active CN102520439B (en) | 2011-07-12 | 2011-10-25 | Geological disaster-detecting sensor and monitoring and warning system thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN102520439B (en) |
| WO (1) | WO2013007071A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007071A1 (en) * | 2011-07-12 | 2013-01-17 | Chen Xiangli | Sensor for probing geological disaster and monitoring and alarming device thereof |
| CN102853895B (en) * | 2012-09-18 | 2013-11-27 | 中国科学院武汉岩土力学研究所 | Device for mounting and recovering slight-shock three-dimensional sensor in all-dimensional deep hole of cataclastic rock mass |
| ITMI20130122A1 (en) * | 2013-01-28 | 2014-07-29 | Luceat S P A | OPTICAL-VIBRATIONAL SENSOR |
| SE538479C2 (en) | 2013-06-20 | 2016-07-26 | Uhlin Per-Axel | Vibration sensor for sensing vibrations in the vertical and horizontal joints of the vibration sensor |
| CN105484802B (en) * | 2016-01-15 | 2018-05-15 | 神华集团有限责任公司 | A kind of coal mine rock burst combined monitoring early warning system and its monitoring and pre-alarming method |
| CN105928603B (en) * | 2016-04-28 | 2019-03-19 | 河南丹江大观苑旅游有限公司 | A kind of scenic spot massif monitoring system based on Fibre Optical Sensor |
| CN107808497A (en) * | 2017-11-23 | 2018-03-16 | 广东惠利普路桥信息工程有限公司 | A kind of Fibre Optical Sensor geological disaster control device being accurately positioned |
| CN108168685B (en) * | 2017-12-27 | 2019-07-30 | 燕山大学 | External drive vibration detection device and detection method |
| CN109489879B (en) * | 2018-11-23 | 2020-10-02 | 黑龙江科技大学 | Coal mine rock burst monitoring device and monitoring method |
| CN110046772A (en) * | 2019-04-28 | 2019-07-23 | 王国新 | A kind of Geological Hazards Monitoring method and monitoring system based on big data |
| CN111679330B (en) * | 2020-04-29 | 2023-03-14 | 中煤科工集团重庆研究院有限公司 | Integrated sensor for electromagnetic wave geological perspective and acoustic emission monitoring and excavation following monitoring method |
| CN113393633B (en) * | 2021-07-09 | 2023-09-26 | 西安忠舍天域新能源安全技术有限公司 | Deflagration fire detection method and novel deflagration fire detector |
| CN113567651A (en) * | 2021-07-23 | 2021-10-29 | 湖南致力工程科技有限公司 | Monitoring and early warning instrument for mine geological disaster detection and use method thereof |
| CN114001782A (en) * | 2021-11-26 | 2022-02-01 | 中国电建集团成都勘测设计研究院有限公司 | Geological disaster monitoring device |
| CN114754959B (en) * | 2022-04-27 | 2023-07-18 | 清华大学 | Angular displacement signal generation method for micro-vibration test of laser communication link |
| CN114858216B (en) * | 2022-05-07 | 2023-09-12 | 河北地质大学 | Geological disaster monitoring system based on optical fiber sensing technology |
| CN116519113B (en) * | 2023-07-04 | 2023-09-26 | 山东科技大学 | Method for measuring vibration of object to be measured based on fiber bragg grating and vibration sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006349474A (en) * | 2005-06-15 | 2006-12-28 | Totoku Electric Co Ltd | Optical fiber vibration sensor |
| CN201548317U (en) * | 2009-11-06 | 2010-08-11 | 陈祥力 | Mining optical fiber grating sound sensor |
| CN202256694U (en) * | 2011-07-12 | 2012-05-30 | 陈祥力 | Geological disaster detecting sensor and monitoring alarm device thereof |
| CN102520439B (en) * | 2011-07-12 | 2014-06-25 | 陈祥力 | Geological disaster-detecting sensor and monitoring and warning system thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127356A (en) * | 1995-01-20 | 1996-07-24 | 电子科技大学 | Optic fibre vibration sensor |
| JPH09304169A (en) * | 1996-05-10 | 1997-11-28 | Oki Electric Ind Co Ltd | Optic fiber acceleration sensor |
| CA2278356C (en) * | 1998-07-31 | 2005-03-22 | David B. Hall | Optical waveguide sensor system for remote detection |
| US7137299B2 (en) * | 2005-04-21 | 2006-11-21 | Northrop Grumman Corporation | Fiber optic accelerometer |
| CN100507486C (en) * | 2005-11-03 | 2009-07-01 | 武汉理工大学 | Optical fiber raster vibration sensor of tunable matching filtering demodulation |
| CN100478724C (en) * | 2007-03-08 | 2009-04-15 | 山东大学 | Universal separate prefabricated plugging optical fiber grating sensor and producing and using method thereof |
| CN201464025U (en) * | 2009-07-10 | 2010-05-12 | 山东大学 | Fiber grating acoustic sensor |
| CN201429460Y (en) * | 2009-07-24 | 2010-03-24 | 陈祥力 | Mining optical fiber grating vibration sensor |
| CN101718580B (en) * | 2009-12-17 | 2011-08-03 | 天津大学 | Sound vibration acquisition device based on optical grating |
-
2011
- 2011-10-25 WO PCT/CN2011/081249 patent/WO2013007071A1/en active Application Filing
- 2011-10-25 CN CN201110327463.5A patent/CN102520439B/en active Active
- 2011-10-25 CN CN201180072790.9A patent/CN103782140A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006349474A (en) * | 2005-06-15 | 2006-12-28 | Totoku Electric Co Ltd | Optical fiber vibration sensor |
| CN201548317U (en) * | 2009-11-06 | 2010-08-11 | 陈祥力 | Mining optical fiber grating sound sensor |
| CN202256694U (en) * | 2011-07-12 | 2012-05-30 | 陈祥力 | Geological disaster detecting sensor and monitoring alarm device thereof |
| CN102520439B (en) * | 2011-07-12 | 2014-06-25 | 陈祥力 | Geological disaster-detecting sensor and monitoring and warning system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102520439B (en) | 2014-06-25 |
| WO2013007071A1 (en) | 2013-01-17 |
| CN102520439A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103782140A (en) | Sensor for probing geological disaster and monitoring and alarming device thereof | |
| Dong et al. | Implications for rock instability precursors and principal stress direction from rock acoustic experiments | |
| CN101206010B (en) | Pipe jar destruction positioning system based on sound wave synergic detection and positioning method thereof | |
| CN100456035C (en) | Blast source based dam nondestructive detecting system | |
| Peng et al. | Performance of a hybrid demonstration earthquake early warning system in the Sichuan–Yunnan border region | |
| Xiao et al. | Excavation-induced microseismicity in the columnar jointed basalt of an underground hydropower station | |
| Lu et al. | Case study of blast-induced shock wave propagation in coal and rock | |
| Peng et al. | Performance evaluation of an earthquake early warning system in the 2019–2020 M 6.0 Changning, Sichuan, China, Seismic Sequence | |
| JP2014106128A (en) | Method of measuring natural ground elastic wave velocity | |
| Wang et al. | Microseismicity characteristics before and after a rockburst and mechanisms of intermittent rockbursts in a water diversion tunnel | |
| CN110514377B (en) | Method for evaluating influence degree of blasting vibration on building | |
| Du et al. | Rockburst inoculation process at different structural planes and microseismic warning technology: a case study | |
| Ma et al. | Microseismic monitoring, positioning principle, and sensor layout strategy of rock mass engineering | |
| CN103198620B (en) | A kind of debris flow early-warning system and method | |
| Gu et al. | Experimental and theoretical study on influence of different charging structures on blasting vibration energy | |
| CN202256694U (en) | Geological disaster detecting sensor and monitoring alarm device thereof | |
| Young et al. | Analysis of mining-induced microseismic events at Strathcona mine, Sudbury, Canada | |
| Li et al. | Highly sensitive fiber optic microseismic monitoring system for tunnel rockburst | |
| CN206757054U (en) | A kind of face ripple pick-up sensor and face ripple detecting system | |
| Sagong et al. | Cross-hole seismic technique for assessing in situ rock mass conditions around a tunnel | |
| Lu et al. | Numerical simulation on energy concentration and release process of strain rockburst | |
| EP1126290B1 (en) | Improvements in or relating to seismic wave measuring devices | |
| CN201138339Y (en) | Shock damage positioning system based on acoustic wave cooperative detection | |
| CN203688809U (en) | Wavelet analysis device for elastic wave exploration | |
| Zou | The study of acoustic emission (AE) forecasting coal and rock disaster technique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |