CN103528749A - On-line coal mine back water pressure monitoring system and method based on optical fiber grating - Google Patents
On-line coal mine back water pressure monitoring system and method based on optical fiber grating Download PDFInfo
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- CN103528749A CN103528749A CN201310511518.7A CN201310511518A CN103528749A CN 103528749 A CN103528749 A CN 103528749A CN 201310511518 A CN201310511518 A CN 201310511518A CN 103528749 A CN103528749 A CN 103528749A
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Abstract
The invention discloses an on-line coal mine back water pressure monitoring system and a method based on an optical fiber grating, and belongs to a coal mine back water pressure monitoring system and a method. According to the system, an underground overlying water-bearing layer back is provided with a monitoring observation station every other 50m; each observation station is formed by connecting a water pipe, a water valve, an optical fiber grating pressure sensor and an optical fiber grating temperature sensor in series; tail optical fibers at leading-out ends of the optical fiber grating temperature sensors are connected with communicating optical fibers; the communicating optical fibers of the observation stations are connected with a mining transmission cable by a terminal box; the mining transmission cable is connected with an input end of an optical fiber grating static demodulation instrument; an output end of the optical fiber grating static demodulation instrument is connected with a monitoring server; and a processing result of the monitoring server is shared by each terminal equipment through a local area network. The system has the advantages that the system is high in temperature measurement accuracy, convenient to mount, high in antijamming capability, and intrinsically explosion-proof; long-distance and uninterrupted real-time on-line monitoring of back flood damage is achieved without underground power supply; and the response time of mine flood damage is shortened greatly.
Description
Technical field
The present invention relates to a kind of coal mine tunnel top board water pressure monitoring system and method, specifically a kind of coal mine tunnel top board hydraulic pressure on-line monitoring system and method based on fiber grating.
Background technology
China's emphasis colliery is subject to about 25,000,000,000 tons of the coal reserves that water threatens, and is wherein subject to nearly 10,000,000,000 tons of the coal reserves of the water body threats such as surface water body (Jiang,He,Hu, sea etc.), loose aquifer, bedrock aquifer.Affected by river, just there is more than 200 mine threatened by more than 100 bar size rivers, and the coalfield of North China, East China, the Northeast is generally that unconsolidated formation water-bearing zone covers by Quaternary system and the 3rd, cause the relatively best superficial part outcrop area seam mining difficulty of its exploitation benefit.If in the daily control water conservancy project in colliery is done, each water-bearing zone hydrology geologic feature of mine and exploitation situation are monitored, grasp hydrology current intelligence, find in time dangerous sign and take the precautionary measures, just can avoid the loss of water damage or minimizing water damage.
At present, the Forecasting Methodology of gushing water mainly contains: water bursting coefficient method, the Y-factor method Y that blocks water, water inrush index method and experimental formula method etc.In these methods, the pressure of piestic water is research and the most important parameter of prediction gushing water problem, so be the important evidence of prediction water inrush accident to its Real-Time Monitoring.What China's coal-mine water pressure monitoring was mainly used at present is electric class pressure transducer, because electric signal long-distance transmissions is inconvenient, need to increase in down-hole the equipment such as many secondary instruments, repeater and power supply, the high and poor reliability of transmission cost, has seriously limited the practical application of such sensor.
Summary of the invention
Technical matters: in order to overcome deficiency of the prior art, Real-Time Monitoring wet formation hydraulic pressure is take in the present invention provides a kind of many survey stations, easy for installation, down-hole without power supply, anti-electromagnetic interference (EMI), distant signal transmission, essential safety, coal mine tunnel top board hydraulic pressure on-line monitoring system and method based on fiber grating that measuring accuracy is high as basis.
Technical scheme: the present invention is achieved through the following technical solutions: a kind of coal mine tunnel top board hydraulic pressure on-line monitoring system based on fiber grating, comprises the static (FBG) demodulator of fiber grating, monitoring server, colliery LAN (Local Area Network), client, mining transmission cable, optical fiber terminal box, communication optical fiber, fiber-optical grating temperature sensor, fiber bragg grating pressure sensor, water valve and water pipe, at back, every 50m, arrange a monitoring survey station, each survey station is by a water pipe, a water valve, a light grating pressure sensor and a fiber-optical grating temperature sensor are composed in series, fiber-optical grating temperature sensor exit optical fiber pigtail is linked with telecommunication optical fiber, the communication optical fiber of each survey station is connected communication optical fiber by the optical fiber terminal box in tunnel with mining transmission cable, mining transmission cable is connected with the input end of the static (FBG) demodulator of fiber grating, the output terminal of the static (FBG) demodulator of fiber grating is connected with monitoring server, the data processed result of monitoring server is carried out data sharing by colliery LAN (Local Area Network) and client, form the real time on-line monitoring system of the full optical-fibre communications of coal mine tunnel top board hydraulic pressure.
Each fiber bragg grating pressure sensor carries out temperature compensation by another one fiber-optical grating temperature sensor to it.
Mining transmission cable is divided into a plurality of passages by optical fiber terminal box, and each subchannel is connecting communication optical fiber respectively.
The software systems of the embedded back water pressure monitoring based on fiber grating of described monitoring server, this system has data receiver, data processing, the demonstration of data processed result real-time pictures, list demonstration, data storage, the inquiry of historical data, warning early warning.
The acquisition method of back water pressure: in back boring, by the cross current water-bearing zone with water valve, utilize fiber-optic grating sensor to gather pressure information, this fiber grating monitoring system has real-time, the temperature compensation signal that the signal that this system collects fiber bragg grating pressure sensor and fiber-optical grating temperature sensor collect transfers to the static (FBG) demodulator of fiber grating by communication optical fiber and mining transmission cable, by the static (FBG) demodulator of fiber grating, lightwave signal is demodulated into digital signal, then transfer to monitoring server, software systems by the embedded back water pressure monitoring based on fiber grating of server are carried out data processing, by terminal display Real-Time Monitoring back wet formation hydraulic pressure, in time top board water leak accident is carried out to forecasting and warning, the software systems of the embedded back water pressure monitoring based on fiber grating of monitoring server, have data receiver, data processing, the demonstration of data processed result real-time pictures, list demonstration, data storage, the inquiry of historical data, warning early warning, the monitoring result of this monitoring system can realize multiple terminals Real-Time Monitoring by LAN (Local Area Network).
Beneficial effect, owing to having adopted such scheme, adopt the very responsive fiber-optic grating sensor of pressure and temperature to external world as the direct harvester of collection of coal mine top board hydraulic signal, by fiber-optical grating temperature sensor, install by way of compensation, to make up fiber bragg grating pressure sensor because temperature variation causes the error of reflectance spectrum, thereby accurate baroreflex spectral signal is passed through to communication optical fiber, optical fiber terminal box and mining transmission cable are transferred in the static (FBG) demodulator of fiber grating on ground, baroreflex spectral signal is demodulated into digital signal, digital signal shares final data processed result with the client in the LAN (Local Area Network) of colliery after processing via the software system analysis in monitoring server, thereby make back hydraulic pressure under the real-time monitor well of staff before client, thereby realize the timely early warning of down-hole flood.Because fiber grating adopts lightwave signal perception roof pressure and temperature variation, thereby roof water pressure monitoring system just can move and have explosion-proof performance in down-hole without power supply in the situation that.
Advantage: temperature measurement accuracy is high, easy for installation, antijamming capability strong, essence is explosion-proof, by optical fiber, hydraulic signal is being carried out to long-distance transmissions without underground power supply used in the situation that, realize the long distance of back water damage, continual real time on-line monitoring, greatly reduce the response time of mine water disaster, for the safe working of mine is laid a solid foundation.
Accompanying drawing explanation
Fig. 1 is water pressure monitoring system architecture schematic diagram of the present invention.
In figure, 1, the static (FBG) demodulator of fiber grating; 2, monitoring server; 3, colliery LAN (Local Area Network); 4, client; 5, mining transmission cable; 6, optical fiber terminal box; 7, communication optical fiber; 8, optical fiber pigtail; 9, fiber-optical grating temperature sensor; 10, water valve; 11, fiber bragg grating pressure sensor; 12, water pipe; 13, tunnel overlying aquifer; 14, tunnel superincumbent stratum; 15, monitoring survey station.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Embodiment 1: the coal mine tunnel top board hydraulic pressure on-line monitoring system of a kind of colliery based on fiber grating, in the tunnel of overlying aquifer, every 50m, a monitoring survey station 15 is installed, the generation type of monitoring system is: at back, hole to tunnel overlying aquifer 13, water pipe with water valve is mounted to ，Bing Jiang hole, water-bearing zone to be sealed.Fiber bragg grating pressure sensor 11 is installed on water pipe, utilize optical fiber splicer welding to pass through light tail optical fiber 8 by fiber bragg grating pressure sensor 11, fiber-optical grating temperature sensor 9 and communication grating 7 are cascaded, each survey station communication grating 7 links with mining transmission cable 5 by termination box 6, mining transmission cable 5 links with the input end of the static (FBG) demodulator 1 of fiber grating, the output terminal of fiber Bragg grating (FBG) demodulator 1 is connected with monitoring server 2, after the embedded disposal system of monitoring server is processed data processing, by colliery LAN (Local Area Network) 3, data processed result is shared on to client, on terminal display, forming real-time pictures shows, thereby form back hydraulic pressure real-time monitoring system.
Each fiber bragg grating pressure sensor 11 carries out temperature compensation by another one fiber-optical grating temperature sensor 9 to it.
The connected mode that described fiber bragg grating pressure sensor 11, light grating temperature sensor 9 and communication optical fiber 7 are cascaded is that optical fiber pigtail 8 links together by optical fiber splicer welding.
The acquisition method of back water pressure: in back boring, be communicated with water-bearing zone by the water pipe 12 with water valve 10, utilize fiber-optic grating sensor to gather pressure information, this fiber grating monitoring system has real-time, the temperature compensation signal that the signal that this system collects fiber bragg grating pressure sensor 11 and fiber-optical grating temperature sensor 9 collect transfers to the static (FBG) demodulator 1 of fiber grating by communication optical fiber and mining transmission cable 5, by the static (FBG) demodulator 1 of fiber grating, lightwave signal is demodulated into digital signal, then transfer to monitoring server 2, software systems by the embedded back water pressure monitoring based on fiber grating of server are carried out data processing, by terminal display 4 Real-Time Monitoring back wet formation hydraulic pressure, in time top board water leak accident is carried out to forecasting and warning, the software systems of the embedded back water pressure monitoring based on fiber grating of described monitoring server, this system has data receiver, data processing, the demonstration of data processed result real-time pictures, list demonstration, data storage, the inquiry of historical data, warning early warning.
The monitoring result of this monitoring system can realize multiple terminals Real-Time Monitoring by LAN (Local Area Network).
Claims (4)
1. the coal mine tunnel top board hydraulic pressure on-line monitoring system based on fiber grating, is characterized in that: this monitoring system comprises the static (FBG) demodulator of fiber grating, monitoring server, colliery LAN (Local Area Network), client, mining transmission cable, optical fiber terminal box, communication optical fiber, fiber-optical grating temperature sensor, fiber bragg grating pressure sensor, water valve and water pipe, at back, every 50m, arrange a monitoring survey station, each survey station is by a water pipe, a water valve, a light grating pressure sensor and a fiber-optical grating temperature sensor are composed in series, fiber-optical grating temperature sensor exit optical fiber pigtail is connected with telecommunication optical fiber, the communication optical fiber of each survey station is connected communication optical fiber by the optical fiber terminal box in tunnel with mining transmission cable, mining transmission cable is connected with the input end of the static (FBG) demodulator of fiber grating, the output terminal of the static (FBG) demodulator of fiber grating is connected with monitoring server, the data processed result of monitoring server is carried out data sharing by colliery LAN (Local Area Network) and client.
2. according to a kind of coal mine tunnel top board hydraulic pressure on-line monitoring system based on fiber grating described in claims 1, it is characterized in that: each fiber bragg grating pressure sensor carries out temperature compensation by another one fiber-optical grating temperature sensor to it.
3. according to a kind of coal mine tunnel top board hydraulic pressure on-line monitoring system based on fiber grating described in claims 1, it is characterized in that: mining transmission cable is divided into a plurality of passages by optical fiber terminal box, each subchannel is connecting communication optical fiber respectively.
4. a method that adopts a kind of coal mine tunnel top board hydraulic pressure on-line monitoring system based on fiber grating described in claims 1, it is characterized in that: the acquisition method of back water pressure: at back, hole, by the cross current water-bearing zone with water valve, utilize fiber-optic grating sensor to gather pressure information, this fiber grating monitoring system has real-time, the temperature compensation signal that the signal that this system collects fiber bragg grating pressure sensor and fiber-optical grating temperature sensor collect transfers to the static (FBG) demodulator of fiber grating by communication optical fiber and mining transmission cable, by the static (FBG) demodulator of fiber grating, lightwave signal is demodulated into digital signal, then transfer to monitoring server, software systems by the embedded back water pressure monitoring based on fiber grating of server are carried out data processing, by terminal display Real-Time Monitoring back wet formation hydraulic pressure, in time top board water leak accident is carried out to forecasting and warning, the software systems of the embedded back water pressure monitoring based on fiber grating of monitoring server, have data receiver, data processing, the demonstration of data processed result real-time pictures, list demonstration, data storage, the inquiry of historical data, warning early warning, the monitoring result of this monitoring system can realize multiple terminals Real-Time Monitoring by LAN (Local Area Network).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318931A (en) * | 2017-12-14 | 2018-07-24 | 中国矿业大学 | In high precision, essential safety roof height of water flowing fractured zone method of real-time |
| CN108534929A (en) * | 2018-01-09 | 2018-09-14 | 中国海洋石油集团有限公司 | Superhigh temperature sapphire fiber pressure gauge and its processing method and pressure monitor system |
| CN109060168A (en) * | 2018-08-15 | 2018-12-21 | 谢国民 | A kind of spontaneous fire in coal mine monitoring device based on fiber-optic grating sensor |
| CN110485388A (en) * | 2019-05-30 | 2019-11-22 | 水利部南京水利水文自动化研究所 | Hydraulic tunnel dynamic water-pressure monitoring of structures and method based on kinetic head correction |
| CN113899326A (en) * | 2021-08-20 | 2022-01-07 | 中国矿业大学 | Optical fiber sensor, scraper conveyor straightness sensing system and measuring method thereof |
| CN114459536A (en) * | 2022-01-10 | 2022-05-10 | 河南理工大学 | Multifunctional mining roof seepage and leaching water quality monitoring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358886A (en) * | 2008-09-25 | 2009-02-04 | 西安科技大学 | Grating anchor rod force-measuring device and method for monitoring anchor rod stress variation |
| US20110116098A1 (en) * | 2008-01-17 | 2011-05-19 | Ronald L Spross | Apparatus and method for detecting pressure signals |
| CN202329869U (en) * | 2011-11-24 | 2012-07-11 | 南开大学滨海学院 | Multi-point temperature and pressure monitoring system for fiber bragg grating |
| CN102798492A (en) * | 2012-08-30 | 2012-11-28 | 西安科技大学 | Fiber bragg grating detection system device and method for detecting anchoring force of anchor rod |
-
2013
- 2013-10-25 CN CN201310511518.7A patent/CN103528749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110116098A1 (en) * | 2008-01-17 | 2011-05-19 | Ronald L Spross | Apparatus and method for detecting pressure signals |
| CN101358886A (en) * | 2008-09-25 | 2009-02-04 | 西安科技大学 | Grating anchor rod force-measuring device and method for monitoring anchor rod stress variation |
| CN202329869U (en) * | 2011-11-24 | 2012-07-11 | 南开大学滨海学院 | Multi-point temperature and pressure monitoring system for fiber bragg grating |
| CN102798492A (en) * | 2012-08-30 | 2012-11-28 | 西安科技大学 | Fiber bragg grating detection system device and method for detecting anchoring force of anchor rod |
Non-Patent Citations (1)
| Title |
|---|
| 马尚权等: "纵放面采空区遗煤自然发火特性研究", 《华北科技学院学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318931A (en) * | 2017-12-14 | 2018-07-24 | 中国矿业大学 | In high precision, essential safety roof height of water flowing fractured zone method of real-time |
| CN108318931B (en) * | 2017-12-14 | 2019-12-31 | 中国矿业大学 | High-precision and intrinsically safe real-time monitoring method for height of coal seam roof water flowing fractured zone |
| CN108534929A (en) * | 2018-01-09 | 2018-09-14 | 中国海洋石油集团有限公司 | Superhigh temperature sapphire fiber pressure gauge and its processing method and pressure monitor system |
| CN108534929B (en) * | 2018-01-09 | 2020-12-29 | 中国海洋石油集团有限公司 | Ultra-high temperature sapphire optical fiber manometer and pressure monitoring system |
| CN109060168A (en) * | 2018-08-15 | 2018-12-21 | 谢国民 | A kind of spontaneous fire in coal mine monitoring device based on fiber-optic grating sensor |
| CN110485388A (en) * | 2019-05-30 | 2019-11-22 | 水利部南京水利水文自动化研究所 | Hydraulic tunnel dynamic water-pressure monitoring of structures and method based on kinetic head correction |
| CN113899326A (en) * | 2021-08-20 | 2022-01-07 | 中国矿业大学 | Optical fiber sensor, scraper conveyor straightness sensing system and measuring method thereof |
| CN114459536A (en) * | 2022-01-10 | 2022-05-10 | 河南理工大学 | Multifunctional mining roof seepage and leaching water quality monitoring method |
| CN114459536B (en) * | 2022-01-10 | 2023-11-24 | 河南理工大学 | Multifunctional mining roof seepage water quality monitoring method |
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