CN103528731B - A kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing - Google Patents
A kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing Download PDFInfo
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- CN103528731B CN103528731B CN201310511517.2A CN201310511517A CN103528731B CN 103528731 B CN103528731 B CN 103528731B CN 201310511517 A CN201310511517 A CN 201310511517A CN 103528731 B CN103528731 B CN 103528731B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 239000003245 coal Substances 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 229920006240 drawn fiber Polymers 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Testing Or Calibration Of Command Recording Devices (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Based on a coal mine paste filling on-line monitoring system for optical fiber grating sensing, belong to mine filler on-line monitoring system.Before the space of each measuring point is filled with, support bar by earth anchorage to filling space base plate, expansion link retractable support filling space top board, fiber-optic grating sensor group is arranged in the middle part of expansion link, support bar afterbody is drawn fiber connector and is passed through intelligent acess optical fiber cable for mine, thus grating monitor signal is passed to fiber Bragg grating (FBG) demodulator, the signal after demodulation is sent to computer system, after space is filled with, carry out real time and on line monitoring and analyzing and processing to paste body filling body.Advantage: equipment is installed simple, is suitable for popularity; Down-hole does not need power supply, site safety; Adopt full photo measure and Optical Fiber Transmission, effectively avoid the impact of electromagnetic interference (EMI); Adopt temperature compensation grating pair temperature error to compensate, drastically increase monitoring accuracy; Monitoring result can be provided in time, be beneficial to guide field and produce and research work.
Description
Technical field
The present invention relates to a kind of mine filler on-line monitoring system, specifically a kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing.
Background technology
Filling mining technology, as pressed coal mining technique under solution buildings, under railway, under water body and on piestic water, is that of coal-mining technique reforms greatly.Wherein, paste body filling is the important component part of Green Technique in Coal Mining, the gangue near colliery, flyash, industrial slags, inferior soil, urban solid garbages etc. manufacture the toothpaste-like slurry not needing processed on ground, adopt filling pump or gravity pressurization, by Cemented filling to down-hole, in good time bashing or absciss layer district, formed based on the superincumbent stratum support system of paste body filling body, effective control subsidence is within the scope of buildings permissible value, realize village not move, safe working buildings presses down coal, protection mining area ecological environment and groundwater resource.But, due under the environment that obturation may be in high temperature, high pressure or be rich in water at underground coal mine, and in closed environment, stressed and distortion cannot carry out manual measurement to it, can only be measured by equipment; And current traditional monitoring equipment volume is huge, and the environment of high temperature, high pressure or water cannot be adapted to, more cannot complete the monitoring task of the long-term real-time online of obturation.
Summary of the invention
Technical matters: in order to overcome deficiency of the prior art, the invention provides the coal mine paste filling on-line monitoring system based on optical fiber grating sensing that a kind of monitoring accuracy is high, good reliability, antijamming capability are strong, with the ore deposit such as stress, displacement of long-term on-line monitoring paste body filling body pressure situation.
Technical scheme: object of the present invention is achieved through the following technical solutions:
Based on the coal mine paste filling on-line monitoring system of optical fiber grating sensing, system comprises: expansion link, support bar, fiber connector, earth anchor, fiber-optic grating sensor group, optical fiber, optical fiber cable for mine, fiber Bragg grating (FBG) demodulator and computer system, before the space of each measuring point is filled with, support bar by earth anchorage to filling space base plate, expansion link retractable support filling space top board, fiber-optic grating sensor group is arranged in the middle part of expansion link, support bar afterbody is drawn fiber connector and is passed through intelligent acess optical fiber cable for mine, optical fiber cable for mine is connected with fiber Bragg grating (FBG) demodulator, thus grating monitor signal is passed to fiber Bragg grating (FBG) demodulator, fiber Bragg grating (FBG) demodulator is connected with computer system, signal after demodulation is sent to computer system, after space is filled with, real time and on line monitoring and analyzing and processing are carried out to paste body filling body.
Described fiber-optic grating sensor group at least respectively comprises 1 pressure grating, 1 temperature compensation grating and 1 displacement grating.
Described measuring point be gob-side entry retaining roadside packing or goaf filling obturation in be furnished with multiple, respective optical fiber and access optical fiber cable for mine by mode in parallel.
Beneficial effect: owing to have employed such scheme, propose a kind of novel, reasonably, proven technique scheme carries out long-term on-line monitoring to paste body filling, thus obtain the stressed of paste body filling body and the characteristics of motion, for obturation material intensity, distortion allow pressure parameter and supporting parameter etc. determination foundation is provided, adopt multi-measuring point and use, stressed and the characteristics of motion of obturation is reflected, for the intensity of obturation material, distortion allow the determination of pressure parameter and supporting parameter provide foundation to measure coal mine paste filling body stress and sinking displacement amount.When the country rock ore deposit pressure of obturation manifests, rock pressure [in mine is applied in obturation, the pitch of stressed its grating of effect of fiber-optic grating sensor will deform, the reflection kernel wavelength of grating is caused to drift about, utilize the static (FBG) demodulator of the fiber grating on ground that manometric wavelength signals is demodulated into digital signal, then utilize computer system to be further analyzed process to digital signal, carry out the real time on-line monitoring of obturation, guide field is kept the safety in production.
Advantage: equipment is installed simple, is suitable for popularity; Down-hole does not need power supply, site safety; Adopt full photo measure and Optical Fiber Transmission, effectively avoid the impact of electromagnetic interference (EMI); Adopt temperature compensation grating pair temperature error to compensate, drastically increase monitoring accuracy; Monitoring result can be provided in time, be beneficial to guide field and produce and research work.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention.
Fig. 2 is system of the present invention composition frame diagram.
Fig. 3 is gob-side entry retaining roadside packing point layout sectional drawing of the present invention.
Fig. 4 is roadside packing point layout mode figure of the present invention.
Fig. 5 is goaf filling point layout mode figure of the present invention.
In figure, 1, filling space top board; 2, filling space base plate; 3, expansion link; 4, support bar; 5, fiber connector; 6, earth anchor; 7, fiber-optic grating sensor group; 8, optical fiber; 9, optical fiber cable for mine; 10, fiber Bragg grating (FBG) demodulator; 11, computer system; 12, mining roadway; 13, erecting dense individual props spoil; 14, paste body filling body; 15, anchor pole; 16, measuring point; 17.Tunnel rib; 18, coal-face.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Embodiment 1: in FIG, system comprises: expansion link 3, support bar 4, fiber connector 5, earth anchor 6, fiber-optic grating sensor group 7, optical fiber 8, optical fiber cable for mine 9, fiber Bragg grating (FBG) demodulator 10 and computer system 11, before the space of each measuring point 16 is filled with, support bar 4 is fixed to filling space base plate 2 by earth anchor 6, expansion link 3 retractable support filling space top board 1, fiber-optic grating sensor group 7 is arranged in the middle part of expansion link 3, support bar 4 afterbody is drawn fiber connector 5 and is accessed optical fiber cable for mine 9 by optical fiber 8, optical fiber cable for mine 9 is connected with fiber Bragg grating (FBG) demodulator 10, thus grating monitor signal is passed to fiber Bragg grating (FBG) demodulator 10, fiber Bragg grating (FBG) demodulator 10 is connected with computer system 11, signal after demodulation is sent to computer system 11, after space is filled with, real time and on line monitoring and analyzing and processing are carried out to paste body filling body 14.
Described fiber-optic grating sensor group 7 at least respectively comprises 1 pressure grating, 1 temperature compensation grating and 1 displacement grating.
In Fig. 4, Fig. 5, according to monitoring needs, described measuring point 16 can be furnished with multiple, respective optical fiber 8 and access optical fiber cable for mine 9 by the mode of parallel connection in the obturation of gob-side entry retaining roadside packing or goaf filling.
Multi-measuring point use, to measure coal mine paste filling body stress and sinking displacement amount to reflect the stressed and characteristics of motion of obturation, for the intensity of obturation material, distortion allow the determination of pressure parameter and supporting parameter etc. provide foundation.
By above concrete enforcement, the invention provides a kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing, before the space of each measuring point is filled with, support bar by earth anchorage to filling space base plate, expansion link retractable support filling space top board, fiber-optic grating sensor group is arranged in the middle part of expansion link, support bar afterbody is drawn fiber connector and is passed through intelligent acess optical fiber cable for mine, thus grating monitor signal is passed to fiber Bragg grating (FBG) demodulator, signal after demodulation is sent to computer system, after space is filled with, real time and on line monitoring and analyzing and processing are carried out to paste body filling body.Multi-measuring point of the present invention use, to measure coal mine paste filling body stress and sinking displacement amount to reflect the stressed and characteristics of motion of obturation, for the intensity of obturation material, distortion allow the determination of pressure parameter and supporting parameter etc. provide foundation.Advantage: equipment is installed simple, is suitable for popularity; Down-hole does not need power supply, site safety; Adopt full photo measure and Optical Fiber Transmission, effectively avoid the impact of electromagnetic interference (EMI); Adopt temperature compensation grating pair temperature error to compensate, drastically increase monitoring accuracy; Monitoring result can be provided in time, be beneficial to guide field and produce and research work.
Claims (1)
1. based on a coal mine paste filling on-line monitoring system for optical fiber grating sensing, it is characterized in that: system comprises: expansion link, support bar, fiber connector, earth anchor, fiber-optic grating sensor group, optical fiber, optical fiber cable for mine, fiber Bragg grating (FBG) demodulator and computer system, before the space of each measuring point is filled with, support bar by earth anchorage to filling space base plate, expansion link retractable support filling space top board, fiber-optic grating sensor group is arranged in the middle part of expansion link, support bar afterbody is drawn fiber connector and is passed through intelligent acess optical fiber cable for mine, optical fiber cable for mine is connected with fiber Bragg grating (FBG) demodulator, thus grating monitor signal is passed to fiber Bragg grating (FBG) demodulator, fiber Bragg grating (FBG) demodulator is connected with computer system, signal after demodulation is sent to computer system, after space is filled with, real time and on line monitoring and analyzing and processing are carried out to paste body filling body,
Described fiber-optic grating sensor group at least respectively comprises 1 pressure grating, 1 temperature compensation grating and 1 displacement grating;
Described measuring point can be furnished with multiple, respective optical fiber and access optical fiber cable for mine by mode in parallel in the obturation of gob-side entry retaining roadside packing or goaf filling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310511517.2A CN103528731B (en) | 2013-10-25 | 2013-10-25 | A kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing |
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| CN201310511517.2A CN103528731B (en) | 2013-10-25 | 2013-10-25 | A kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing |
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| CN103528731B true CN103528731B (en) | 2015-10-21 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969406B (en) * | 2014-05-16 | 2015-08-12 | 北京科技大学 | A kind of paste body filling multi-scenarios method research device and using method thereof |
| CN103993911B (en) * | 2014-05-21 | 2016-01-06 | 中国矿业大学 | Comprehensive mechanization filling coal mining goaf top plate dynamic monitor |
| CN104142187A (en) * | 2014-07-30 | 2014-11-12 | 冀中能源集团有限责任公司 | Gob-side entry retaining pasty filler on-line detection method |
| CN105509951B (en) * | 2016-01-13 | 2019-01-15 | 中南大学 | A kind of compression manipulated soil hole compression testing device |
| CN105910916B (en) * | 2016-05-18 | 2018-08-14 | 华北科技学院 | Gob side entry retaining roadside packing effect detection experimental provision |
| CN106643630B (en) * | 2016-11-17 | 2019-04-09 | 太原理工大学 | It is a kind of monitoring the back production of gob side entry retaining obturation during stability system and method |
| CN106705902B (en) * | 2016-11-17 | 2019-04-09 | 太原理工大学 | A kind of system and method for monitoring filling band stability |
| CN106595525A (en) * | 2016-12-26 | 2017-04-26 | 中国矿业大学(北京) | Three-dimensional-point-cloud-data-based prevention method of coal mine roof disaster |
| CN106970390B (en) * | 2017-04-17 | 2020-10-02 | 三峡大学 | Method and device for measuring telescopic displacement of underground telescopic hollow mechanism |
| CN108168510B (en) * | 2017-12-18 | 2020-09-18 | 河海大学 | Roadbed settlement deformation monitoring system based on fiber bragg grating and installation method thereof |
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|---|---|---|---|---|
| CN103257009A (en) * | 2013-05-06 | 2013-08-21 | 中国矿业大学 | Working face mine pressure on-line monitoring system based on fiber grating sensing |
| CN103362552A (en) * | 2013-06-26 | 2013-10-23 | 中国矿业大学 | Distributed fiber bragg grating anchor rod group stress monitoring system for coal mine tunnel |
| CN103362553A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | Coal Mine Underground Safety Comprehensive Monitoring System Based on Fiber Bragg Grating Sensor |
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|---|---|---|---|---|
| CN103257009A (en) * | 2013-05-06 | 2013-08-21 | 中国矿业大学 | Working face mine pressure on-line monitoring system based on fiber grating sensing |
| CN103362552A (en) * | 2013-06-26 | 2013-10-23 | 中国矿业大学 | Distributed fiber bragg grating anchor rod group stress monitoring system for coal mine tunnel |
| CN103362553A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | Coal Mine Underground Safety Comprehensive Monitoring System Based on Fiber Bragg Grating Sensor |
Non-Patent Citations (1)
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| 张新国,等.壁后充填膏体监测技术与膏体长期稳定性研究.《山东科技大学学报(自然科学版)》.2012,第31卷(第6期), * |
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