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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
optic
goaf
temperature
early warning
optical cable
Prior art date
Application number
CN201811300053.XA
Other languages
Chinese (zh)
Inventor
王正帅
黄旭超
陈亮
王志辉
刘军
罗靖
徐彬
陶冬
李守瑞
黄森林
Original Assignee
中煤科工集团重庆研究院有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中煤科工集团重庆研究院有限公司 filed Critical 中煤科工集团重庆研究院有限公司
Priority to CN201811300053.XA priority Critical patent/CN109269669A/en
Publication of CN109269669A publication Critical patent/CN109269669A/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmission, scattering or fluorescence in optical fibres
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02Special applications of indicating or recording means, e.g. for remote indications
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmission, scattering or fluorescence in optical fibres
    • G01K2011/324Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmission, scattering or fluorescence 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

Distribution type fiber-optic goaf thermometric and high temperature early warning system

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.
CN201811300053.XA 2018-11-02 2018-11-02 Distribution type fiber-optic goaf thermometric and high temperature early warning system CN109269669A (en)

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

Publications (1)

Publication Number Publication Date
CN109269669A true CN109269669A (en) 2019-01-25

Family

ID=65191906

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811300053.XA CN109269669A (en) 2018-11-02 2018-11-02 Distribution type fiber-optic goaf thermometric and high temperature early warning system

Country Status (1)

Country Link
CN (1) CN109269669A (en)

Citations (6)

* Cited by examiner, † Cited by third party
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
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
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

Similar Documents

Publication Publication Date Title
RU2623392C1 (en) Ongoing monitoring comprehensive system for safety in underground coal mines with the use of fiber-optical sensors made on the basis of the lattice
US6945692B2 (en) Fiber optic temperature monitoring system
CN101458069B (en) Tunnel wall rock deformation monitoring method and monitoring system thereof
JP3180959B2 (en) Optical fiber for sensor and sensor system
CN104088669B (en) Coal mine gob coal spontaneous combustion monitor and early warning system
ES2683823T3 (en) Transport network infrastructure monitoring
CN105158256B (en) A kind of online health monitor method of composite
CN103398860B (en) A kind of ocean platform safety monitoring method of deformation based sensor
CN103336337A (en) Passive visible light patch cord trackers, light patch cord and light patch cord tracking method
CN103017673B (en) Tunnel wall rock deformation real-time continuous alarming method by monitoring
AU2017204543B2 (en) System for dynamically monitoring roadway roof separation based on fibre grating and pre-warning method
CN101592475B (en) Fully distributed fiber Rayleigh and Raman scattering photon strain and temperature sensor
CN102900955A (en) Pipeline leakage on-line monitoring device and method based on f fiber temperature detection
CN203310540U (en) Temperature and strain on-line monitoring device integrating optical phase conductors
CN100510673C (en) Laser remote sensing delecting device for natural gas pipe line leakage and detection method thereof
CN102354433B (en) Railway side slope crag rockfall monitoring and warning system based on fiber grating sensing technology
CN103985225B (en) Flexible passive protection net intelligent monitor system
CA2664320A1 (en) Locating temperature changes in a workspace
CN101246217B (en) Dangerous rock falling calamity early warning instrument and method thereof
CN202947731U (en) Settlement information acquisition system
CN101603866B (en) Distributed optical fiber stress temperature sensing device and sensing method thereof
CN101393690A (en) Over-height vehicle monitoring and pre-warning facility system, monitoring and pre-warning method thereof
CN103364107A (en) Optical fiber Raman cable temperature monitoring and alarm system with attenuation self-compensation
CN101706466B (en) Spontaneous ignition wireless monitoring device of goaf coal and method
CN201885733U (en) Ultra-long-range fully-distributed optical fiber Rayleigh and Raman scattering sensor fused with optical fiber Raman frequency shifter

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination