CN109269669A - Distribution type fiber-optic goaf thermometric and high temperature early warning system - Google Patents
Distribution type fiber-optic goaf thermometric and high temperature early warning system Download PDFInfo
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- CN109269669A CN109269669A CN201811300053.XA CN201811300053A CN109269669A CN 109269669 A CN109269669 A CN 109269669A CN 201811300053 A CN201811300053 A CN 201811300053A CN 109269669 A CN109269669 A CN 109269669A
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- optic
- goaf
- temperature
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- optical cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
Abstract
The invention discloses distribution type fiber-optic goaf thermometric and high temperature early warning systems, it is related to safety monitoring technology field, it is longer and fire location can not be positioned to solve the problems, such as that the existing method to goaf fire monitoring is unable to early warning fire, analysis processing time, its key points of the technical solution are that: including computer module, the distributed optical fiber temperature measurement instrument, transmission cable and the terminal box that connect with computer module, the terminal box is connect by transmission cable with distributed optical fiber temperature measurement instrument；The terminal box is equipped with multiple detection routes being set side by side, and detection route includes hydraulic support, reel and temperature measuring optical cable；The reel is fixedly connected with hydraulic support, and temperature measuring optical cable one end is connect with terminal box, and the other end is fastened with reel, and the temperature with real-time monitoring goaf realizes timely coal spontaneous combustion disaster alarm, holds the effect on best hazard management opportunity.
Description
Technical field
The present invention relates to safety monitoring technology fields, more specifically, it relates to distribution type fiber-optic goaf thermometric and height
Warm early warning system.
Background technique
Mine fire is one of the five big major disasters that China's coal-mine enterprise is faced, and seriously affects and threaten coal mine
Safe and efficient production.According to related statistics, having 96.5% or so in coal-mine fire and is occurred as caused by spontaneous combustionof coal
Spontaneous combustion of remaining coal in goaf accounts for 60%.
Currently, power equipment can not be put into goaf and carried out in real time due to the particularity and its security consideration in goaf
Monitoring mainly passes through beam tube system to goaf fire monitoring and extracts gas sample to ground, carries out in laboratory to symbolic gas
Analysis, if there is the gas marker of coal combustion occurs, it is believed that there is fire.
The existing method to goaf fire monitoring has the following deficiencies:
1, fire can only be monitored, early warning fire is unable to；
2, the analysis processing time is longer, easily leads to the best opportunity for missing hazard management；
3, fire location can not be positioned, causes the disaster relief inefficient；
4, it cannot achieve remote real-time measurement.
Summary of the invention
The object of the present invention is to provide distribution type fiber-optic goaf thermometric and high temperature early warning systems, have real-time monitoring mined out
The temperature in area realizes timely coal spontaneous combustion disaster alarm, holds the effect on best hazard management opportunity.
Above-mentioned technical purpose of the invention has the technical scheme that distribution type fiber-optic goaf thermometric
And high temperature early warning system, including computer module, the distributed optical fiber temperature measurement instrument being connect with computer module, transmission cable and connect
Wire box, the terminal box are connect by transmission cable with distributed optical fiber temperature measurement instrument；The terminal box is equipped with multiple be set side by side
Detection route, detection route include hydraulic support, reel and temperature measuring optical cable；The reel and the fixed company of hydraulic support
It connects, temperature measuring optical cable one end is connect with terminal box, and the other end is fastened with reel.
By using above-mentioned technical proposal, when measuring the temperature in goaf, distributed optical fiber temperature measurement instrument is with certain frequency
Rectangular pulse light, and reflected anti-Stokes luminous intensity in real-time detection temperature measuring optical cable are issued to underground temperature measuring optical cable；
Computer module is analyzed and processed according to temperature of the anti-Stokes luminous intensity to goaf；When the temperature value that computer obtains
When presetting high temperature alarm critical value more than computer module, computer module issues alarm signal；Convenient for real-time monitoring goaf
Temperature, realize timely coal spontaneous combustion disaster alarm, hold best hazard management opportunity.
The present invention is further arranged to: the distributed optical fiber temperature measurement instrument is the optical fiber temperature measuring instrument of single-ended measurement.
By using above-mentioned technical proposal, after optical cable laying is complete, after hydraulic moving stand during roof caving, when
After fracture occurs in temperature measuring optical cable, temperature measuring optical cable is cut at hydraulic support rear, by the temperature measuring optical cable on reel after bracket
Side is drawn to continue to measure to return air main entry again thereto；So that former temperature measuring optical cable becomes two new temperature measuring optical cables, so that
The temperature measurement of distributed optical fiber temperature measurement instrument keeps complete.
The present invention is further arranged to: the temperature measurement of the distributed optical fiber temperature measurement instrument meets following formula:
In formula, IasFor anti-Stokes light intensity；IsFor Stokes light intensity；A is coefficient relevant to temperature；H is Pu Lang
Gram constant；C is the light velocity in vacuum；v0For incident light frequency；K is Boltzmann constant；T is kelvin rating.
By using above-mentioned technical proposal, convenient for the temperature information of any one point on real-time detection temperature measuring optical cable.
The present invention is further arranged to: the range measurement of the distributed optical fiber temperature measurement instrument meets following formula:
In formula, c is the spread speed of light in a fiber；N is optical fibre refractivity；T is the time of light propagation.
By using above-mentioned technical proposal, convenient for the range information of any one point on detection temperature measuring optical cable.
The present invention is further arranged to: the temperature measuring optical cable is attached most importance to armour optical cable, and transmission cable is ordinary optical cable.
By using above-mentioned technical proposal, convenient for enhancing temperature measuring optical cable and transmission cable impact resistance.
The present invention is further arranged to: the temperature measuring optical cable and transmission cable are multifiber cable.
By using above-mentioned technical proposal, when a fibercuts or it is abnormal be not available when, convenient for selection with root optical cable
In other optical fiber work.
In conclusion the invention has the following advantages: measure goaf temperature when, distributed optical fiber temperature measurement instrument
Rectangular pulse light, and reflected anti-stoke in real-time detection temperature measuring optical cable are issued to underground temperature measuring optical cable with certain frequency
This luminous intensity；Computer module is analyzed and processed according to temperature of the anti-Stokes luminous intensity to goaf；When computer obtains
When temperature value out is more than that computer module presets high temperature alarm critical value, computer module issues alarm signal；Convenient for real-time
The temperature for monitoring goaf, realizes timely coal spontaneous combustion disaster alarm, holds best hazard management opportunity；Convenient for real-time detection thermometric
The temperature information of any one point on optical cable；Convenient for the range information of any one point on detection temperature measuring optical cable.
Detailed description of the invention
Fig. 1 is the overall structure diagram in the embodiment of the present invention；
Fig. 2 is the arrangement schematic diagram in the embodiment of the present invention.
In figure: 1, computer module；11, distributed optical fiber temperature measurement instrument；12, transmission cable；13, terminal box；2, hydraulic branch
Frame；21, reel；22, temperature measuring optical cable；3, goaf；31, working region；32, return air main entry.
Specific embodiment
Below in conjunction with attached drawing 1-2, invention is further described in detail.
Embodiment: distribution type fiber-optic goaf thermometric and high temperature early warning system, as shown in Figures 1 and 2, including computer mould
Block 1, the distributed optical fiber temperature measurement instrument 11 connecting with computer module 1, transmission cable 12 and terminal box 13, terminal box 13 pass through biography
Cable 12 is lost to connect with distributed optical fiber temperature measurement instrument 11.Terminal box 13 is equipped with multiple detection routes being set side by side, each work
Multiple detection routes are correspondingly arranged on as face, three detection routes is used in the present embodiment, inspection can be increased or decreased as needed
The quantity on survey line road.Detecting route includes hydraulic support 2, reel 21 and temperature measuring optical cable 22, and hydraulic support 2 is layed in goaf
3 and to which in the working region 31 between production zone, reel 21 is fixedly connected with hydraulic support 2.Temperature measuring optical cable 22 is arranged in
In goaf 3,22 one end of temperature measuring optical cable is connect after passing through return air main entry 32 with the terminal box 13 for being located at underground, the other end and optical cable
Disk 21 is fastened.In hydraulic support 2 as working region 31 to production zone towards during propulsion, reel 21 is
It is laid with automatically under the dragging of the temperature measuring optical cable 22 of laying.In the every laying a distance of temperature measuring optical cable 22, distributed optical fiber temperature measurement instrument
11 initial temperature datas of measurement.
When measuring the temperature in goaf 3, distributed optical fiber temperature measurement instrument 11 is sent out with certain frequency to underground temperature measuring optical cable 22
Rectangular pulse light out, and reflected anti-Stokes luminous intensity in real-time detection temperature measuring optical cable 22.1 basis of computer module
Anti-Stokes luminous intensity is analyzed and processed the temperature in goaf 3.When the temperature value that computer obtains is more than computer mould
When block 1 presets high temperature alarm critical value, computer module 1 issues alarm signal.It is real convenient for the temperature in real-time monitoring goaf 3
Now timely coal spontaneous combustion disaster alarm holds best hazard management opportunity.
As shown in Figure 1, distributed optical fiber temperature measurement instrument 11 is the optical fiber temperature measuring instrument of single-ended measurement, used in the present embodiment
Optical fiber temperature measuring instrument based on Raman scattering.After optical cable laying is complete, after the shifting frame of hydraulic support 2 during roof caving,
After temperature measuring optical cable 22 is broken, temperature measuring optical cable 22 is cut at 2 rear of hydraulic support, by the temperature measuring optical cable on reel 21
22 continue to measure from the drawing of 2 rear of hydraulic support to return air main entry 32 again thereto 13；So that former temperature measuring optical cable 22 becomes
Two new temperature measuring optical cables 22, so that the temperature measurement of distributed optical fiber temperature measurement instrument 11 keeps complete.
As shown in Figure 1, the temperature measurement of distributed optical fiber temperature measurement instrument 11 meets following formula:
In formula, IasFor anti-Stokes light intensity；IsFor Stokes light intensity；A is coefficient relevant to temperature；H is Pu Lang
Gram constant；C is the light velocity in vacuum；v0For incident light frequency；K is Boltzmann constant；T is kelvin rating.Convenient for real-time
Detect the temperature information of any one point on temperature measuring optical cable 22.
As shown in Figure 1, the range measurement of distributed optical fiber temperature measurement instrument 11 meets following formula:
In formula, c is the spread speed of light in a fiber；N is optical fibre refractivity；T is the time of light propagation.It is surveyed convenient for detection
The range information of any one point on warm optical cable 22.
As shown in Figure 1, the temperature measuring optical cable 22 in the present embodiment is using weight armour optical cable, transmission cable 12 uses ordinary optical cable.
Convenient for enhancing the impact resistance of temperature measuring optical cable 22.
As shown in Figure 1, the temperature measuring optical cable 22 and transmission cable 12 in the present embodiment are multifiber cable.It is adopted in the present embodiment
Twin fiber cable is all made of with temperature measuring optical cable 22 and transmission cable 12.When a fibercuts or exception are not available, convenient for choosing
Other optical fiber selected in same root optical cable work.
Working principle: when measuring the temperature in goaf 3, distributed optical fiber temperature measurement instrument 11 is with certain frequency to underground thermometric
Optical cable 22 issues rectangular pulse light, and reflected anti-Stokes luminous intensity in real-time detection temperature measuring optical cable 22；Computer
Module 1 is analyzed and processed according to temperature of the anti-Stokes luminous intensity to goaf 3；When the temperature value that computer obtains is more than
When computer module 1 presets high temperature alarm critical value, computer module 1 issues alarm signal；Convenient for real-time monitoring goaf 3
Temperature realizes timely coal spontaneous combustion disaster alarm, holds best hazard management opportunity.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (6)
1. distribution type fiber-optic goaf thermometric and high temperature early warning system, it is characterized in that: including computer module (1) and computer
Distributed optical fiber temperature measurement instrument (11), transmission cable (12) and the terminal box (13) of module (1) connection, the terminal box (13) pass through
Transmission cable (12) is connect with distributed optical fiber temperature measurement instrument (11)；The terminal box (13) is equipped with multiple detection lines being set side by side
Road, detection route includes hydraulic support (2), reel (21) and temperature measuring optical cable (22)；The reel (21) and hydraulic support
(2) it is fixedly connected, temperature measuring optical cable (22) one end is connect with terminal box (13), and the other end is fastened with reel (21).
2. distribution type fiber-optic goaf according to claim 1 thermometric and high temperature early warning system, it is characterized in that: the distribution
Formula optic fiber thermometer (11) is the optical fiber temperature measuring instrument of single-ended measurement.
3. distribution type fiber-optic goaf according to claim 1 thermometric and high temperature early warning system, it is characterized in that: the distribution
The temperature measurement of formula optic fiber thermometer (11) meets following formula:
In formula, IasFor anti-Stokes light intensity；IsFor Stokes light intensity；A is coefficient relevant to temperature；H is that Planck is normal
Number；C is the light velocity in vacuum；v0For incident light frequency；K is Boltzmann constant；T is kelvin rating.
4. distribution type fiber-optic goaf according to claim 1 thermometric and high temperature early warning system, it is characterized in that: the distribution
The range measurement of formula optic fiber thermometer (11) meets following formula:
In formula, c is the spread speed of light in a fiber；N is optical fibre refractivity；T is the time of light propagation.
5. distribution type fiber-optic goaf according to any one of claims 1-4 thermometric and high temperature early warning system, feature
Be: the temperature measuring optical cable (22) is attached most importance to armour optical cable, and transmission cable (12) is ordinary optical cable.
6. distribution type fiber-optic goaf according to any one of claims 1-4 thermometric and high temperature early warning system, feature
Be: the temperature measuring optical cable (22) and transmission cable (12) are multifiber cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300053.XA CN109269669A (en) | 2018-11-02 | 2018-11-02 | Distribution type fiber-optic goaf thermometric and high temperature early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300053.XA CN109269669A (en) | 2018-11-02 | 2018-11-02 | Distribution type fiber-optic goaf thermometric and high temperature early warning system |
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| CN109269669A true CN109269669A (en) | 2019-01-25 |
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| CN201811300053.XA Pending CN109269669A (en) | 2018-11-02 | 2018-11-02 | Distribution type fiber-optic goaf thermometric and high temperature early warning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578079A (en) * | 2019-01-28 | 2019-04-05 | 霍州煤电集团有限责任公司 | A kind of sowing type optical fiber temperature-measurement connecton layout and its wiring method |
| CN109683269A (en) * | 2019-01-28 | 2019-04-26 | 霍州煤电集团有限责任公司 | A kind of rake optical fiber temperature-measurement connecton layout and its wiring method |
| CN114018434A (en) * | 2021-09-18 | 2022-02-08 | 湖北三江航天红峰控制有限公司 | Detection device and detection method for solid rocket engine interface bonding glue solution |
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| EP0300529A1 (en) * | 1985-02-01 | 1989-01-25 | National Power PLC | Temperature measurement |
| CN202417600U (en) * | 2011-12-26 | 2012-09-05 | 江苏法尔胜泓昇集团有限公司 | Full-fiber temperature monitoring system in underground gob of coal mine |
| CN203531962U (en) * | 2013-07-23 | 2014-04-09 | 西安科技大学 | Worked-out section temperature field distributed optical fiber monitoring and early warning system |
| CN104792436A (en) * | 2015-04-10 | 2015-07-22 | 青岛创立科技开发有限公司 | Distributed optical fiber temperature measuring method |
| CN104948171A (en) * | 2014-03-25 | 2015-09-30 | 煤科集团沈阳研究院有限公司 | Temperature measurement system of coal mine gob area |
| 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 |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0300529A1 (en) * | 1985-02-01 | 1989-01-25 | National Power PLC | Temperature measurement |
| CN202417600U (en) * | 2011-12-26 | 2012-09-05 | 江苏法尔胜泓昇集团有限公司 | Full-fiber temperature monitoring system in underground gob of coal mine |
| CN203531962U (en) * | 2013-07-23 | 2014-04-09 | 西安科技大学 | Worked-out section temperature field distributed optical fiber monitoring and early warning system |
| CN104948171A (en) * | 2014-03-25 | 2015-09-30 | 煤科集团沈阳研究院有限公司 | Temperature measurement system of coal mine gob area |
| CN104792436A (en) * | 2015-04-10 | 2015-07-22 | 青岛创立科技开发有限公司 | Distributed optical fiber temperature measuring method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578079A (en) * | 2019-01-28 | 2019-04-05 | 霍州煤电集团有限责任公司 | A kind of sowing type optical fiber temperature-measurement connecton layout and its wiring method |
| CN109683269A (en) * | 2019-01-28 | 2019-04-26 | 霍州煤电集团有限责任公司 | A kind of rake optical fiber temperature-measurement connecton layout and its wiring method |
| CN109683269B (en) * | 2019-01-28 | 2023-05-16 | 霍州煤电集团有限责任公司 | Rake type optical fiber temperature measurement wiring device and wiring method thereof |
| CN114018434A (en) * | 2021-09-18 | 2022-02-08 | 湖北三江航天红峰控制有限公司 | Detection device and detection method for solid rocket engine interface bonding glue solution |
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Application publication date: 20190125 |