CN203531962U - Worked-out section temperature field distributed optical fiber monitoring and early warning system - Google Patents
Worked-out section temperature field distributed optical fiber monitoring and early warning system Download PDFInfo
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- CN203531962U CN203531962U CN201320442018.8U CN201320442018U CN203531962U CN 203531962 U CN203531962 U CN 203531962U CN 201320442018 U CN201320442018 U CN 201320442018U CN 203531962 U CN203531962 U CN 203531962U
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Abstract
The utility model relates to a worked-out section temperature field distributed optical fiber monitoring and early warning system, which is characterized by comprising temperature sensing optical fibers (1), a temperature measuring apparatus (2), a looped network interchanger (3), a mine looped network (4) and a monitoring host (5), wherein the temperature sensing optical fibers (1) access to the temperature measuring apparatus (2), the temperature measuring apparatus (2) accesses to the looped network interchanger, and the looped network interchanger is connected to the monitoring host (5) through the mine looped network.
Description
Technical field
The utility model relates to thermal field, goaf monitoring and warning technology, more specifically, relates to thermal field, goaf distributed optical fiber sensing early warning system.
Background technology
Mining refers in high seam, along coal seam, the coal wall of a mining height 2m～3m is arranged in (or segmentation) bottom, by conventional method, carry out back production, utilize the effect of mine pressure or be aided with artificial loosening method, after making the crushing voerhead coal of support top become a prose style free from parallelism, by support rear (or top), emitted, and transport work plane via drag conveyor.Nineteen nineties starts, China starts test and promotes mining technology, and benefit and the output of coal significantly improve, and have occurred the Oversize Mine of ten million ton of a collection of annual output, for example benefit in 2011 connects 2,620 ten thousand tons, tower coal production raw coal, 2,510 ten thousand tons, great Liu tower colliery.But also brought new problem meanwhile to the control of mine coal freely burning fire: erecting dense individual props height and space increase, and form cavity, make goaf "O"-ring leave over residual coal many, leak out serious, spontaneous combustion is frequent; Top, face end support place coal coal caving ratio is low in addition does not even put, and crossheading all can increase spontaneous combustion of coal probability along reasons such as base plate drivings.
Once coal spontaneous combustion disaster occurs, because disguise and the uncertainty of burning things which may cause a fire disaster will cause great difficulty to anti-fire-fighting work.The generation of each fire, gently impact production, breaking-up equipment, freeze a large amount of coal resources, heavy may induce gas and dust explosion or fiery cigarette to poison mine, lead to personnel casualty accidents.Therefore at spontaneous combustionof coal, in early days Real-Time Monitoring being carried out in goaf seems particularly important.
Conventional coal spontaneous combustion monitoring technology has: magnetic detection method, resistivity method, tracer gas technique, survey radon method, gas index analytic approach, geologic radar detection method, radio wave method, thermal infrared thermometry and contact temperature determination method etc.Down-hole high-temperature area around iron material is many, and the iron concretion that distributes in Seam Roof And Floor and coal is inhomogeneous all monitors spontaneous combustion area to magnetic detection method and bring certain difficulty.Down-hole stray electrical current causes the monitoring accuracy of resistivity method limited more.Determine the comparatively difficulty of tracer gas technique to the particular location of high temperature dot and scope.Survey radon method and compose under the condition of depositing dark, multiple seam spontaneous combustion at complicated geological, flame range burning things which may cause a fire disaster, also must further analyze and research.Gas index analytic approach is limited to the coal seam degree of depth, cannot determine spontaneous combustion of coal seam position and speed, the many and poor reliability of disturbing factor.During burning things which may cause a fire disaster point in geologic radar detection spontaneous combustion deathtrap, the electromagnetic rate of decay is too fast.Radio wave method cost of equipment maintenance is large, and electromagnetic wave is subject to the impacts such as water, rock stratum, equipment decay fast.Thermal infrared thermometry can only detect the temperature of body surface and the vertical object of instrument.Contact temperature determination method pre-buried sensor is many, and protectiveness is poor.
Utility model content
In order to overcome the deficiency of various conventional methods to goaf coal spontaneous combustion monitoring, the utility model provides a kind of essential safety, temperature is true and reliable, in extensive range, monitored density is high can meet long thermal field, goaf distributed optical fiber sensing early warning system of monitoring apart from solid space.By this system applies in spontaneous combustion of remaining coal deathtrap, coal mine gob, can thermal field, real time on-line monitoring goaf and variation tendency thereof, and realize the grading forewarning system of goaf coal spontaneous combustion fire characteristic temperature and the judgement of armed position, to mine, anti-fire-fighting work has important directive function, the safety in production of effective guarantee mine.
To achieve these goals, the utility model provides thermal field, a kind of goaf distributed optical fiber sensing early warning system, it is characterized in that comprising: temperature sensing optical fiber (1), temperature measuring equipment (2), ring exchanger (3), mine looped network (4) and monitoring host computer (5), temperature sensing optical fiber (1) access temperature measuring equipment (2), temperature measuring equipment (2) access ring network switch, ring exchanger is connected with monitoring host computer (5) via mine looped network.
In distributed optical fiber sensing early warning system as above, described temperature sensing optical fiber is cylindrical-shaped structure.
In distributed optical fiber sensing early warning system as above, described temperature sensing optical fiber comprises high strength tightly packaged fiber (6), metal steel pipe (7), the first metal net (8), double-layer wire stranded layer (9), the second metal net (10) and sheath (11) from inside to outside.
In distributed optical fiber sensing early warning system as above, described metal steel pipe (7) parcel high strength tightly packaged fiber (6), described the first metal net (8) coated metal steel pipe (7), described double-layer wire stranded layer (9) parcel the first metal net (8), described the second metal net (10) parcel double-layer wire stranded layer (9), described sheath (11) parcel the second metal net (10).
In distributed optical fiber sensing early warning system as above, described temperature sensing optical fiber (1) is laid on hydraulic support rear portion along the direction that is parallel to fully mechanized coal face, then along air entering and returning crossheading base plate, lay near ring exchanger goaf (3) position with rib boundary line or the direction parallel with this boundary line, and/or along air entering and returning crossheading top board, lay near ring exchanger goaf (3) position with rib boundary line or the direction parallel with this boundary line, then access the interface of temperature measuring equipment (2).
In distributed optical fiber sensing early warning system as above, described temperature sensing optical fiber (1), temperature measuring equipment (2), ring exchanger (3) are positioned under mine, and monitoring host computer (5) is positioned on mine.
The temperature sensing optical fiber collection sensing that thermal field, goaf of the present utility model distributed optical fiber sensing early warning system adopts be transmitted in one, only need temperature sensing optical fiber and just can complete the collection of whole monitoring circuit temperature and transmission without other equipment, simple in structure, arrangement convenience, positioning precision is high, can the yo-yo variations in temperature of accurate detection.Temperature sensing optical fiber power output less than 10 milliwatts, low in energy consumption, essential safety, stable, is not subject to electromagnetic interference.High-intensity temperature sensing optical fiber is applicable to the adverse circumstances of down-hole, anti-destructive is strong, highly sensitive, measured temperature is continuous, and density is high, does not have blind spot, signal detection long transmission distance, be suitable for using in the complex environment of goaf, be particularly useful for the monitoring and warning of thermal field, highly gassy mine longwall top coal caving goaf, in the monitoring of thermal field, the hidden region of goaf spontaneous combustion high density network, have broad application prospects and construction value.
Accompanying drawing explanation
Fig. 1 is the structural representation of thermal field, goaf of the present utility model distributed optical fiber sensing early warning system.
Fig. 2 is the cross-sectional view of the fire-retardant temperature sensing optical fiber of enhancement type mining of the present utility model.
Fig. 3 A is the schematic diagram of the layout of temperature sensing optical fiber of the present utility model.
Fig. 3 B is the schematic diagram of the layout of whole system.
Fig. 4 is the structural representation of monitoring host computer of the present utility model.
The specific embodiment
To describe preferred embodiment of the present utility model in detail according to accompanying drawing now.Note, the positioned opposite of the assembly in embodiment and the shape of device are only described to example, and are not intended to scope of the present utility model to be limited to these examples.In addition, similar Reference numeral and letter refer to similar in the drawings, thus, as long as define one in a figure, without the figure for follow-up, this are discussed.
Below in conjunction with accompanying drawing, content of the present utility model is described in detail.
Fig. 1 is the structural representation of thermal field, goaf of the present utility model distributed optical fiber sensing early warning system.As shown in Figure 1, thermal field, a kind of goaf described in the utility model distributed optical fiber sensing early warning system comprises: the fire-retardant temperature sensing optical fiber 1 of enhancement type mining, mining distributed fiber temperature measuring device 2, mining ethernet ring network switch 3, ethernet ring network 4 and monitoring host computer 5.The fire-retardant temperature sensing optical fiber 1 of described enhancement type mining is arranged in the temperature that (the dotted line bottom of figure) under mine feels goaf, and mining distributed fiber temperature measuring device 2 is connected with described temperature sensing optical fiber 1.And temperature measuring equipment 2 is connected to ethernet ring network 4 via ethernet ring network switch 3, thereby the temperature of institute's sensing is sent to the monitoring host computer 5 being connected with ethernet ring network 4.
Mining distributed fiber temperature measuring device described in the utility model is by temperature sensing optical fiber, as collection and sensor, to carry out the optical instrument of location survey temperature.Adopt light time field technique, theoretical in conjunction with fiber raman scattering, utilize the ratio of anti-Stokes light intensity and Stokes light intensity to calculate environment temperature, and realize the distributed measurement of optical fiber thermal field along the line.Comparatively ripe to the research of distributed optical fiber temperature measurement main frame at present, repeat no more herein.
Describe the fire-retardant temperature sensing optical fiber 1 of enhancement type mining below in detail.Fig. 2 is the cross-sectional view of the fire-retardant temperature sensing optical fiber 1 of enhancement type mining of the present utility model.As shown in Figure 2, fire-retardant temperature sensing optical fiber 1 heatproof of enhancement type mining described in the utility model can reach 200 ℃, is cylindrical-shaped structure.Comprise from inside to outside: 2 high strength tightly packaged fiber 6, metal steel pipe 7, the first metal net 8, double-layer wire stranded layer 9, the second metal net 10 and polytetrafluoroethylsheath sheaths 11 that model is GI62.5/125 μ m.Described metal steel pipe 7 wraps the high strength tightly packaged fiber 6 that 2 models are the individual fibers formation of GI62.5/125 μ m, described high strength tightly packaged fiber 6 is placed in metal steel pipe 7, described the first metal net 8 wraps metal steel pipe 7, described double-layer wire stranded layer 9 wraps the first metal net 8, described the second metal net 10 wraps double-layer wire stranded layer 9, and described polytetrafluoroethylsheath sheath 11 wraps the second metal net 10.While being caving due to goaf, surge is huge, and the temperature sensing optical fiber with said structure can strengthen the protection to mining temperature sensing optical fiber, in case pound disconnectedly, ensures the effective monitoring to thermal field, goaf.
The layout of thermal field, goaf distributed optical fiber sensing early warning system is described below with reference to Fig. 3 A and 3B.Parts in figure are only for illustrative purpose, and the size of describing is only also signal with ratio and relative layout.The size of each parts in reality will determine according to institute's application scenarios with ratio and relative layout.
Fig. 3 A is the schematic diagram that temperature sensing optical fiber of the present utility model is arranged, this figure is the top view schematic perspective view of the perspectivity while seeing above mine.First each component part of this figure is described below.In figure, be the direction of propulsion of pit mining fully mechanized coal face from top to bottom.2 thick lines of 2 thick lines of top along continuous straight runs and the vertical direction being attached thereto are temperature sensing optical fiber 1.The cube on top is mine goaf 8.The true form that it will be appreciated by those skilled in the art that goaf is not limited to shape shown.Middle cube is hydraulic support 7.Nethermost rectangular surfaces is fully mechanized coal face 6.Direction of propulsion when fully mechanized coal face 6 broad arrow is below fully mechanized coal face 6 production.The arrow of both sides, bottom is the air-flow direction of air entering and returning crossheading (not shown).In actual mine, the part adjacent with 8 both sides, described mine goaf is rib (not shown).
The layout of temperature sensing optical fiber is described below.As shown in the thick line of the along continuous straight runs at the top in Fig. 3 A, the fire-retardant temperature sensing optical fiber 1 of two enhancement type minings described in the utility model is all laid in the mine goaf 8 at hydraulic support 7 rear portions along the direction that is parallel to fully mechanized coal face 6.A temperature sensing optical fiber of bottom is then laid near central substation ring exchanger 3 positions (as shown in Figure 3 B) goaf along the boundary line 9 of air entering and returning crossheading base plate (not shown) and rib (not shown).An optical fiber on top is then laid near central substation ring exchanger 3 positions (as shown in Figure 3 B) goaf along the boundary line 10 of air entering and returning crossheading top board (not shown) and rib (not shown).Although there is shown two temperature sensing optical fibers, in fact can lay as required one or three above temperature sensing optical fibers.In the situation that more than one or three temperature sensing optical fiber, first the fire-retardant temperature sensing optical fiber 1 of enhancement type mining remains along the direction that is parallel to fully mechanized coal face 6 and is laid in the mine goaf 8 at hydraulic support 7 rear portions, and then temperature sensing optical fiber 1 is laid near central substation ring exchanger 3 positions (as shown in Figure 3 B) goaf along being parallel to the direction of boundary line 10 of air entering and returning crossheading top board (not shown) and rib (not shown) or the direction that is parallel to the boundary line 10 of air entering and returning crossheading base plate (not shown) and rib (not shown).
The layout of the whole system that comprises temperature sensing optical fiber is described below.As shown in Figure 3 B, near the optical fiber interface of the fire-retardant temperature sensing optical fiber 1 of enhancement type mining central substation ring exchanger 3 position access mine optical fiber distributed temperature measuring devices 2 goaf, mine optical fiber distributed temperature measuring device 2 accesses mining ethernet ring network switch 3 by RJ45 mouth (not shown) via mining flame-retardant shielding netting wire, and ethernet ring network switch 3 is connected to monitoring host computer 5 through down-hole ethernet ring network 4 by netting twine by mining communications optical cable.Monitoring host computer 5 carries out real time on-line monitoring by monitoring software.
The structural representation of monitoring host computer 5 is described below with reference to Fig. 4.As shown in Figure 4, described monitoring host computer 5 comprises: data monitoring module, data analysis module, data management module, data outputting module and database.Described data monitoring module, data analysis module, data management module, data outputting module are all connected with database.Described monitoring host computer 5 can show omnidistance zoning plan and temperature distribution history thereof in real time, the temperature temporal evolution curve of emphasis monitoring point, there is constant temperature warning (setting maximum temperature/minimum temperature value), differential temperature is reported to the police, and (real time temperature and average temperature difference are excessive, be used for differentiating local hot spot), temperature rise is crossed and is reported to the police, optical fiber destroys reports to the police, the abnormal warning function that waits of device, can in length, carry out to measured zone subregion, at least can be divided into 128Ge district, local emphasis monitoring and subregion warning are carried out in some region, can also show or history of printing curve by enquiry of historical data, there is TCP/IP access function etc., can realize goaf coal spontaneous combustion characteristic temperature is extracted, sentence and know and early warning, according to mine coal spontaneous combustion characteristic temperature information realization to thermal field, goaf 3 D stereo high density network monitoring and warning.
Thermal field, goaf of the present utility model distributed optical fiber sensing early warning system is applied to spontaneous combustion of remaining coal deathtrap, coal mine gob, can thermal field, real time on-line monitoring goaf and variation tendency thereof, and realize the grading forewarning system of goaf coal spontaneous combustion fire characteristic temperature and the judgement of armed position, to mine, anti-fire-fighting work has important directive function, the safety in production of effective guarantee mine.
The utility model is not limited in the above-mentioned specific embodiment, and the variation that those of ordinary skills make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (6)
1. thermal field, a goaf distributed optical fiber sensing early warning system, is characterized in that comprising: temperature sensing optical fiber (1), temperature measuring equipment (2), ring exchanger (3), mine looped network (4) and monitoring host computer (5),
Temperature sensing optical fiber (1) access temperature measuring equipment (2), temperature measuring equipment (2) access ring network switch, ring exchanger is connected with monitoring host computer (5) via mine looped network.
2. distributed optical fiber sensing early warning system according to claim 1, is characterized in that: described temperature sensing optical fiber is cylindrical-shaped structure.
3. distributed optical fiber sensing early warning system according to claim 2, is characterized in that: described temperature sensing optical fiber comprises high strength tightly packaged fiber (6), metal steel pipe (7), the first metal net (8), double-layer wire stranded layer (9), the second metal net (10) and sheath (11) from inside to outside.
4. distributed optical fiber sensing early warning system according to claim 3, is characterized in that:
Described metal steel pipe (7) parcel high strength tightly packaged fiber (6), described the first metal net (8) coated metal steel pipe (7), described double-layer wire stranded layer (9) parcel the first metal net (8), described the second metal net (10) parcel double-layer wire stranded layer (9), described sheath (11) parcel the second metal net (10).
5. thermal field, goaf according to claim 1 distributed optical fiber sensing early warning system, is characterized in that:
Described temperature sensing optical fiber (1) is laid on hydraulic support rear portion along the direction that is parallel to fully mechanized coal face, then along air entering and returning crossheading base plate, lay near ring exchanger goaf (3) position with rib boundary line or the direction parallel with this boundary line, and/or along air entering and returning crossheading top board, lay near ring exchanger goaf (3) position with rib boundary line or the direction parallel with this boundary line, then access the interface of temperature measuring equipment (2).
6. thermal field, goaf according to claim 1 distributed optical fiber sensing early warning system, is characterized in that:
Described temperature sensing optical fiber (1), temperature measuring equipment (2), ring exchanger (3) are positioned under mine, and monitoring host computer (5) is positioned on mine.
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| CN201320442018.8U CN203531962U (en) | 2013-07-23 | 2013-07-23 | Worked-out section temperature field distributed optical fiber monitoring and early warning system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088669A (en) * | 2014-07-21 | 2014-10-08 | 天地（常州）自动化股份有限公司 | Coal spontaneous combustion monitoring and early warning system for coal mine goaf |
| CN105115624A (en) * | 2015-08-18 | 2015-12-02 | 安徽理工大学 | Working face base plate water inrush temperature field distributed testing method |
| CN105547518A (en) * | 2015-12-28 | 2016-05-04 | 西安科技大学 | Mined-out-area distributed optical fiber temperature monitoring and early warning system and method thereof |
| CN109269669A (en) * | 2018-11-02 | 2019-01-25 | 中煤科工集团重庆研究院有限公司 | Distribution type fiber-optic goaf thermometric and high temperature early warning system |
| CN109389797A (en) * | 2017-08-10 | 2019-02-26 | 株洲中车时代电气股份有限公司 | A kind of fire early-warning system and method for photovoltaic plant |
| CN110888149A (en) * | 2019-11-04 | 2020-03-17 | 西安科技大学 | Coal seam fire positioning system and positioning method |
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2013
- 2013-07-23 CN CN201320442018.8U patent/CN203531962U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088669A (en) * | 2014-07-21 | 2014-10-08 | 天地（常州）自动化股份有限公司 | Coal spontaneous combustion monitoring and early warning system for coal mine goaf |
| CN104088669B (en) * | 2014-07-21 | 2016-04-13 | 天地（常州）自动化股份有限公司 | Coal mine gob coal spontaneous combustion monitor and early warning system |
| CN105115624A (en) * | 2015-08-18 | 2015-12-02 | 安徽理工大学 | Working face base plate water inrush temperature field distributed testing method |
| CN105115624B (en) * | 2015-08-18 | 2017-12-08 | 安徽理工大学 | A kind of floor undulation gushing water thermo parameters method formula method of testing |
| CN105547518A (en) * | 2015-12-28 | 2016-05-04 | 西安科技大学 | Mined-out-area distributed optical fiber temperature monitoring and early warning system and method thereof |
| CN109389797A (en) * | 2017-08-10 | 2019-02-26 | 株洲中车时代电气股份有限公司 | A kind of fire early-warning system and method for photovoltaic plant |
| CN109269669A (en) * | 2018-11-02 | 2019-01-25 | 中煤科工集团重庆研究院有限公司 | Distribution type fiber-optic goaf thermometric and high temperature early warning system |
| CN110888149A (en) * | 2019-11-04 | 2020-03-17 | 西安科技大学 | Coal seam fire positioning system and positioning method |
| CN110888149B (en) * | 2019-11-04 | 2021-07-23 | 西安科技大学 | Coal seam fire positioning system and positioning method |
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