WO2015003487A1 - Optical fiber grating temperature-sensing monitoring system and method for coal-mining working surface goaf in coal mine - Google Patents
Optical fiber grating temperature-sensing monitoring system and method for coal-mining working surface goaf in coal mine Download PDFInfo
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- WO2015003487A1 WO2015003487A1 PCT/CN2014/071567 CN2014071567W WO2015003487A1 WO 2015003487 A1 WO2015003487 A1 WO 2015003487A1 CN 2014071567 W CN2014071567 W CN 2014071567W WO 2015003487 A1 WO2015003487 A1 WO 2015003487A1
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 85
- 239000003245 coal Substances 0.000 title claims abstract description 71
- 238000005065 mining Methods 0.000 title claims abstract description 41
- 239000013307 optical fiber Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 31
- 230000003068 static effect Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims description 127
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000004927 fusion Effects 0.000 claims description 4
- -1 monitoring station Substances 0.000 claims description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 14
- 238000002485 combustion reaction Methods 0.000 abstract description 13
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 206010000369 Accident Diseases 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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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
- G01K11/3206—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 at discrete locations in the fibre, e.g. using Bragg scattering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2213/00—Temperature mapping
Definitions
- the invention relates to a temperature sensing monitoring system and method for a goaf of a coal mine working face, in particular to a fiber grating temperature sensing monitoring system and method for a goaf of a coal mining working face,
- China is the country with the largest coal output in the world. It is also one of the countries with the most serious spontaneous combustion of coal seams. It will not only bring serious economic losses to the coal mines, but also cause a large number of coal mine casualties. According to statistics, China's state-owned key coal mines account for 51.3% of mines with spontaneous combustion hazards, accounting for more than 90% of total mine fires. Due to coal seam spontaneous combustion, China loses about 200 million tons of coal resources each year. At the same time, coal spontaneous combustion is also a coal mine. One of the causes of a major gas accident in the gas explosion. It can be seen that the spontaneous combustion of coal seams has become one of the main factors restricting the safe and efficient production and development of coal mines.
- Coal seam spontaneous combustion is the focus of fire prevention work, and most of the spontaneous combustion occurs in the goaf.
- the mechanization degree of mining has been greatly improved, the mining speed has been accelerated, and the thickness of floating coal in fully mechanized mining face is large, resulting in an ever-increasing area of goaf, and the thickness of coal left in the goaf.
- spontaneous combustion it will cause huge economic losses. Therefore, prevention and control of coal spontaneous combustion in goaf is the key to ensuring safe and efficient production of coal mines in China.
- thermoelectric signal sensors in principle, including thermistor sensor and thermocouple sensor. They are all treated with thermoelectric signals, so they are sensitive to the environment, and the surrounding environment directly affects whether the system can operate normally.
- the sensor needs power supply, the transmitted signal is electrical signal, the anti-interference ability is weak, the reliability is low, the environment in the goaf is bad, so there are many safety hazards; and the signal transmission distance is short, and the long-term long-term online cannot be realized. real-time monitoring.
- the object of the present invention is to adapt to the safe and efficient production of coal mines now, to meet the safety requirements of underground coal mines, to provide a convenient installation, a simple method, an intrinsic safety, no safety hazards, and optical fiber transmission.
- the signal and signal transmission distance is long, the measurement accuracy is high, and the reliability of the coal mining face of the coal mining face is controlled by the fiber grating temperature sensing system and method.
- a fiber grating temperature sensing system for a coal mining face in a coal mining face including a fiber grating static demodulator, a monitoring computer, a network server, a client, and a mine transmission
- Optical cable fiber optic terminal box, first communication fiber, second communication fiber, monitoring station, fiber grating temperature sensor, fiber pigtail
- 3 ⁇ 5 monitoring stations are arranged in the goaf, each monitoring station includes 10 ⁇ 12 fiber grating temperature sensors, wherein the fiber grating temperature sensors in each monitoring station are connected in series by fiber pigtails, and the fiber ends of the fiber grating temperature sensor are respectively connected to the first communication fiber and the second communication fiber.
- the mining transmission cable is connected with the input end of the fiber grating static demodulator, and the output and monitoring of the fiber grating static demodulator
- the computer is connected, and the monitoring computer is counted through the network server, the coal mine LAN, and the client. Share formation at coal face Fiber Bragg Grating Temperature Monitoring System for all-fiber communication in goaf.
- the monitoring stations are arranged in a row at intervals of 15 to 20 meters.
- the fiber grating temperature sensors are arranged at intervals of 10 to 15 meters.
- the fiber grating temperature sensors are connected in series by the way that the fiber pigtail fibers are welded by the fiber fusion splicer or connected by the fiber coupler;
- the monitoring computer embedded analysis processing software can perform input, reception, storage, history query, real-time screen display, list display, and alarm warning.
- the mining transmission optical cable is divided into two channels through the optical fiber terminal box, and the two channels are respectively connected to the first communication optical fiber and the second communication optical fiber;
- b. First set up a monitoring station in the goaf, and arrange a set of fiber grating temperature sensors in the monitoring station.
- the distance between the fiber grating temperature sensors is 10 ⁇ 15 meters.
- the fiber pigtail will monitor the station.
- the fiber grating temperature sensors are connected in series. As the coal mining face advances, the next monitoring station is arranged when the separation distance is 15-20 meters, until the set number of monitoring stations is completed;
- the first communication fiber and the second communication fiber are disposed on the upper and lower ends of the coal mining face, and are connected with the fiber pigtail of the fiber grating temperature sensor in the monitoring station;
- All the fiber grating temperature sensors are installed, that is, enter the working state, and monitor the temperature change of the gob; e.
- the optical wave signal collected by the fiber grating temperature sensor is transmitted to the fiber grating static demodulator through the optical fiber and the optical cable, and the fiber grating is passed through the fiber grating.
- the static demodulator demodulates the light wave signal into a digital signal, and then transmits it to the monitoring computer, and performs data processing through the analysis processing software installed in the monitoring computer to display the gob area temperature data and the change trend in real time, when the temperature data exceeds the set value.
- the gob area temperature threshold occurs, an early warning and an alarm occur;
- the monitored goaf temperature data will be shared by the whole mine, realizing on-line real-time remote monitoring of the goaf of the coal mining face.
- the invention adopts a fiber grating temperature sensor to monitor the temperature in the goaf, and is equipped with a high-end connection device such as a fiber grating static demodulator, a fiber end box and a fiber splitter, which has high temperature measurement precision, convenient installation and simple method, and optical fiber.
- a high-end connection device such as a fiber grating static demodulator, a fiber end box and a fiber splitter
- the grating temperature sensor is intrinsically safe, can effectively avoid the influence of electromagnetic interference in complex and harsh environments, and has no hidden dangers; the temperature signal transmission through the optical fiber, the signal transmission distance is long, safe, reliable and stable; Large-area, long-distance, large-range, long-distance, long-term temperature real-time, on-line monitoring, short response time, timely and accurate provision of temperature monitoring results in goaf, early warning and over-limit alarm for fire, greatly reduced The accident of spontaneous combustion of coal in goaf occurs, adapting to the safe and efficient production of coal mines now, meeting the safety needs of underground coal mines, and promoting scientific research.
- FIG. 1 is a structural view of a temperature sensing monitoring system of the present invention.
- fiber grating static demodulation instrument 1, monitoring computer; 3, network server; 4, coal mine local area network; 5, the client; 6, mining transmission cable; 7, fiber terminal box; 80, the first communication fiber; 81, the second communication fiber 9, coal mining face; 10, monitoring station; 11, fiber grating temperature sensor 12, gob area; 100, fiber pigtail.
- Embodiment 1 A fiber grating temperature sensing system for a coal mining face in a coal mining face, 3 to 5 monitoring stations 10 are arranged in the goaf 12, and the monitoring stations are arranged at intervals of 10 rows, and the spacing distance is 15 ⁇ 20 meters, each monitoring station 10 includes 10 ⁇ 12 fiber grating temperature sensors 11, and the fiber grating temperature sensor 11 has a separation distance of 10 ⁇ 15 meters, and the fiber gratings in the station 10 are monitored by the fiber pigtails 100.
- the temperature sensor 11 is connected in series by means of a fusion splicer or a fiber coupler connection, and the lead fiber pigtail 100 of the FBG temperature sensor 11 is connected to the first communication fiber 80 and the second communication fiber 81 through the fiber terminal box.
- the mine transmission cable 6 is connected to the input end of the fiber grating static demodulator 1, and the output of the fiber grating static demodulator 1 is
- the monitoring computer 2 is connected, and the monitoring computer 2 shares data with the client 5 through the network server 3, the coal mine local area network 4, and forms a gob of the coal mining face Fiber Bragg Grating Temperature Monitoring System for all-fiber communication.
- the monitoring stations are arranged in a row at intervals of 15 to 20 meters.
- the fiber grating temperature sensors are arranged at intervals of 10 to 15 meters.
- the fiber grating temperature sensors are connected in series by the fiber pigtails being fused by a fiber fusion splicer or by a fiber coupler; the fiber coupler is a conventional small device connecting two fibers.
- the monitoring computer embedded analysis processing software can perform input, reception, storage, history query, real-time screen display, list display, and alarm warning.
- the mining transmission cable is divided into two channels through the fiber end box, and the two channels are respectively connected to the communication fiber;
- a monitoring station is arranged in the goaf, and a set of fiber grating temperature sensors are arranged at intervals in the monitoring station.
- the fiber grating temperature sensor has a separation distance of 10 to 15 meters.
- the fiber grating temperature sensors in the monitoring station are connected in series through the fiber pigtail. As the coal mining face advances, the separation distance is 15-20 meters. Arrange the next monitoring station until the number of monitoring stations is set;
- Two communication optical fibers are arranged to the upper and lower ends of the coal mining working surface, and are connected with the fiber ends of the fiber grating temperature sensor in the monitoring station;
- All the fiber grating temperature sensors are installed, that is, enter the working state, and monitor the temperature change of the gob; e.
- the optical wave signal collected by the fiber grating temperature sensor is transmitted to the fiber grating static demodulator through the optical fiber and the optical cable, and the fiber grating is passed through the fiber grating.
- the static demodulator demodulates the light wave signal into a digital signal, and then transmits it to the monitoring computer, and performs data processing through the analysis processing software installed in the monitoring computer to display the gob area temperature data and the change trend in real time, when the temperature data exceeds the set value.
- the gob area temperature threshold occurs, an early warning and an alarm occur; f.
- the monitored goaf temperature data will be shared by the whole mine to realize online real-time remote monitoring of the goaf of the coal mining face.
- the invention discloses a fiber grating temperature sensing monitoring system and method in a coal mining face of a coal mining face of the invention, and arranges a plurality of monitoring stations in the goaf, uses a fiber grating temperature sensor in the station, and uses a high-end fiber terminal box and a fiber splitter in the underground.
Abstract
An optical fiber grating temperature-sensing monitoring system for a coal-mining working surface goaf in a coal mine. Between 3 and 5 monitoring stations (10) are distributively arranged within a goaf (12). Each monitoring station (10) comprises between 10 and 12 optical fiber grating temperature sensors (11). In each monitoring station (10), the optical fiber grating temperature sensors (11) are serial-connected therebetween via optical fiber pigtails (100). The lead-out end optical fiber pigtails (100) of the optical fiber grating temperature sensors (11) are connected to communication optical fibers (80 and 81). The communication optical fibers (80 and 81) are connected to a mining-use transmission optical fiber cable (6) via an optical fiber termination box (7). The mining-use transmission optical fiber cable (6) is connected to an input end of the optical fiber grating static demodulator (1). An output end of the optical fiber grating static demodulator (1) is connected to a monitoring computer (2). Also, optical fiber grating temperature-sensing monitoring method for the coal-mining working surface goaf in the coal mine. This allows for implementation of high precision in temperature measurements, convenient installation, simplified method, and large-area, long-distance, wide-range, remote, long-term, real-time, and online monitoring of the temperature of the coal-mining working surface goaf, and provides early warning and overrun alarm with respect to fire hazards, thus greatly reducing occurrence of accidents of spontaneous combustion of goaf coal.
Description
一种煤矿采煤工作面采空区光纤光栅感温监测***及方法 Fiber grating temperature sensing monitoring system and method for goaf in coal mining face
技术领域 Technical field
本发明涉及一种煤矿工作面采空区感温监测***及方法， 具体是一种煤矿采煤工作 面采空区光纤光栅感温监测***及方法， The invention relates to a temperature sensing monitoring system and method for a goaf of a coal mine working face, in particular to a fiber grating temperature sensing monitoring system and method for a goaf of a coal mining working face,
背景技术 Background technique
我国是世界上煤炭产量最大的国家， 也是煤层自燃发火最为严重的国家之一， 不仅 会给煤矿带来严重的经济损失， 而且会造成大量的煤矿人员的伤亡。 据统计， 我国国有 重点煤矿中具有自燃危险的矿井约占 51.3%， 占总矿井火灾的 90%以上， 由于煤层自燃， 我国每年损失煤炭资源 2亿吨左右； 同时， 煤炭自燃发火也是酿成煤矿瓦斯***重大恶 性事故的原因之一。 可见， 煤层自燃火灾成为制约煤矿安全高效生产与发展的主要因素 之一。 China is the country with the largest coal output in the world. It is also one of the countries with the most serious spontaneous combustion of coal seams. It will not only bring serious economic losses to the coal mines, but also cause a large number of coal mine casualties. According to statistics, China's state-owned key coal mines account for 51.3% of mines with spontaneous combustion hazards, accounting for more than 90% of total mine fires. Due to coal seam spontaneous combustion, China loses about 200 million tons of coal resources each year. At the same time, coal spontaneous combustion is also a coal mine. One of the causes of a major gas accident in the gas explosion. It can be seen that the spontaneous combustion of coal seams has become one of the main factors restricting the safe and efficient production and development of coal mines.
煤层自燃发火是防灭火工作的治理重点， 绝大部分自燃发火发生在采空区内。 随着 煤矿开采深度的增加， 开采机械化程度的大幅度提高， 开采速度日益加快， 且综采工作 面浮煤厚度大， 造成了采空区面积不断增大， 出现采空区遗留煤的厚度加大， 导致采空 区内煤自然发火事故频发， 而综采工作面产量大、 设备精， 一旦发生自燃势必造成巨大 的经济损失。 因此， 防治采空区煤炭自燃是保证我国煤矿安全高效生产的重点。 Coal seam spontaneous combustion is the focus of fire prevention work, and most of the spontaneous combustion occurs in the goaf. With the increase of coal mining depth, the mechanization degree of mining has been greatly improved, the mining speed has been accelerated, and the thickness of floating coal in fully mechanized mining face is large, resulting in an ever-increasing area of goaf, and the thickness of coal left in the goaf. Large, causing frequent occurrence of coal spontaneous fire accidents in the goaf, while the output of the fully mechanized mining face is large and the equipment is fine. Once spontaneous combustion occurs, it will cause huge economic losses. Therefore, prevention and control of coal spontaneous combustion in goaf is the key to ensuring safe and efficient production of coal mines in China.
目前， 我国煤矿自燃火灾自动监测及报警***在原理上均采用热电信号的传感器， 包括热敏电阻传感器及热电偶传感器。 它们都是应用热电信号进行处理， 因此对环境比 较敏感， 周围环境的好坏直接影响到***能否正常运行。 同时， 传感器需要电源供电， 传输的信号是电信号， 抗干扰能力较弱， 可靠性较低， 采空区内环境恶劣， 故存在许多 安全隐患； 且信号传输距离短， 不能实现大范围长期在线实时监测。 At present, China's coal mine spontaneous combustion fire automatic monitoring and alarm system uses thermoelectric signal sensors in principle, including thermistor sensor and thermocouple sensor. They are all treated with thermoelectric signals, so they are sensitive to the environment, and the surrounding environment directly affects whether the system can operate normally. At the same time, the sensor needs power supply, the transmitted signal is electrical signal, the anti-interference ability is weak, the reliability is low, the environment in the goaf is bad, so there are many safety hazards; and the signal transmission distance is short, and the long-term long-term online cannot be realized. real-time monitoring.
发明内容 Summary of the invention
技术问题： 为了克服现有技术中的不足， 本发明的目的是为了适应现在煤矿安全高 效生产， 满足煤矿井下安全需要， 提供一种安装方便， 方法简便， 本质安全， 无安全隐 患存在， 光纤传输信号， 信号传输距离远， 测量精度高， 可靠性好的煤矿采煤工作面采 空区光纤光栅感温监测***及方法。 Technical Problem: In order to overcome the deficiencies in the prior art, the object of the present invention is to adapt to the safe and efficient production of coal mines now, to meet the safety requirements of underground coal mines, to provide a convenient installation, a simple method, an intrinsic safety, no safety hazards, and optical fiber transmission. The signal and signal transmission distance is long, the measurement accuracy is high, and the reliability of the coal mining face of the coal mining face is controlled by the fiber grating temperature sensing system and method.
技术方案： 本发明的目的通过如下技术方案实现： 一种煤矿采煤工作面采空区光纤 光栅感温监测***， 包括光纤光栅静态解调仪、 监控计算机、 网络服务器、 客户端、 矿 用传输光缆、 光纤终端盒、 第一通讯光纤、 第二通讯光纤、 监测测站、 光纤光栅温度传 感器、 光纤尾纤； 在采空区内布设 3~5个监测测站， 每个监测测站内包括 10~12个光纤 光栅温度传感器，每个监测测站内的光纤光栅温度传感器之间通过光纤尾纤串联在一起， 将光纤光栅温度传感器的引出端光纤尾纤分别与第一通讯光纤和第二通讯光纤连接， 通 过光纤终端盒将第一通讯光纤和第二通讯光纤与矿用传输光缆连接， 矿用传输光缆与光 纤光栅静态解调仪的输入端连接， 光纤光栅静态解调仪的输出端与监控计算机相连接， 监控计算机通过网络服务器、 煤矿局域网与客户端进行数据共享， 形成煤矿采煤工作面
采空区全光纤通讯的光纤光栅感温监测***。 Technical Solution: The object of the present invention is achieved by the following technical solutions: A fiber grating temperature sensing system for a coal mining face in a coal mining face, including a fiber grating static demodulator, a monitoring computer, a network server, a client, and a mine transmission Optical cable, fiber optic terminal box, first communication fiber, second communication fiber, monitoring station, fiber grating temperature sensor, fiber pigtail; 3~5 monitoring stations are arranged in the goaf, each monitoring station includes 10 ~12 fiber grating temperature sensors, wherein the fiber grating temperature sensors in each monitoring station are connected in series by fiber pigtails, and the fiber ends of the fiber grating temperature sensor are respectively connected to the first communication fiber and the second communication fiber. Connecting, connecting the first communication fiber and the second communication fiber to the mine transmission optical cable through the fiber end box, the mining transmission cable is connected with the input end of the fiber grating static demodulator, and the output and monitoring of the fiber grating static demodulator The computer is connected, and the monitoring computer is counted through the network server, the coal mine LAN, and the client. Share formation at coal face Fiber Bragg Grating Temperature Monitoring System for all-fiber communication in goaf.
所述的监测测站成行间隔排列， 行间隔距离为 15~20米。 The monitoring stations are arranged in a row at intervals of 15 to 20 meters.
所述的光纤光栅温度传感器间隔排列， 间隔距离为 10~15米。 The fiber grating temperature sensors are arranged at intervals of 10 to 15 meters.
所述的光纤光栅温度传感器串联在一起的连接方式为光纤尾纤通过光纤熔接机熔接 或者通过光纤耦合器连接在一起； The fiber grating temperature sensors are connected in series by the way that the fiber pigtail fibers are welded by the fiber fusion splicer or connected by the fiber coupler;
所述的监控计算机内嵌分析处理软件， 能够进行输入、 接收、 存储、 历史查询、 实 时画面显示、 列表显示、 报警预警。 The monitoring computer embedded analysis processing software can perform input, reception, storage, history query, real-time screen display, list display, and alarm warning.
一种煤矿采煤工作面采空区光纤光栅感温监测的方法： Method for monitoring temperature sensing of fiber grating in goaf of coal mining face:
a、 矿用传输光缆通过光纤终端盒分为两个通道， 两通道分别连接第一通讯光纤和第 二通讯光纤； a. The mining transmission optical cable is divided into two channels through the optical fiber terminal box, and the two channels are respectively connected to the first communication optical fiber and the second communication optical fiber;
b、在采空区内布先设一个监测测站， 在监测测站内间隔布置一组光纤光栅温度传感 器， 光纤光栅温度传感器的间隔距离为 10~15米， 通过光纤尾纤将监测测站内的光纤光 栅温度传感器串联在一起， 随着采煤工作面的向前推进， 间隔距离为 15~20米时布设下 一个监测测站， 直至完成设定的监测测站数目； b. First set up a monitoring station in the goaf, and arrange a set of fiber grating temperature sensors in the monitoring station. The distance between the fiber grating temperature sensors is 10~15 meters. The fiber pigtail will monitor the station. The fiber grating temperature sensors are connected in series. As the coal mining face advances, the next monitoring station is arranged when the separation distance is 15-20 meters, until the set number of monitoring stations is completed;
c、 第一通讯光纤和第二通讯光纤布设至采煤工作面的上下两端头， 并与监测测站内 光纤光栅温度传感器的引出端光纤尾纤连接； c. The first communication fiber and the second communication fiber are disposed on the upper and lower ends of the coal mining face, and are connected with the fiber pigtail of the fiber grating temperature sensor in the monitoring station;
d、 所有的光纤光栅温度传感器安装好， 即进入工作状态， 监测采空区温度变化； e、将光纤光栅温度传感器采集的光波信号通过光纤及光缆传输至光纤光栅静态解调 仪， 通过光纤光栅静态解调仪将光波信号解调为数字信号， 然后传输至监控计算机， 通 过安装在监控计算机的分析处理软件进行数据处理， 实时显示采空区温度数据及变化趋 势， 当温度数据超过设定的采空区温度阈值时， 发生预警及报警； d. All the fiber grating temperature sensors are installed, that is, enter the working state, and monitor the temperature change of the gob; e. The optical wave signal collected by the fiber grating temperature sensor is transmitted to the fiber grating static demodulator through the optical fiber and the optical cable, and the fiber grating is passed through the fiber grating. The static demodulator demodulates the light wave signal into a digital signal, and then transmits it to the monitoring computer, and performs data processing through the analysis processing software installed in the monitoring computer to display the gob area temperature data and the change trend in real time, when the temperature data exceeds the set value. When the gob area temperature threshold occurs, an early warning and an alarm occur;
f、 通过煤矿局域网 4和网络服务器 3， 将监测的采空区温度数据进行全矿共享， 实 现对采煤工作面采空区全天在线实时远程监测。 f. Through the coal mine local area network 4 and the network server 3, the monitored goaf temperature data will be shared by the whole mine, realizing on-line real-time remote monitoring of the goaf of the coal mining face.
有益效果： 由于采用了上述方案， 本发明具有以下优点： Advantageous Effects: Since the above scheme is adopted, the present invention has the following advantages:
本发明采用了光纤光栅温度传感器监测采空区内的温度， 配置了光纤光栅静态解调 仪、 光纤终端盒和光纤分路器等高端连接设备， 测温精度高、 安装方便、 方法简便， 光 纤光栅温度传感器本质安全、 可有效避免复杂恶劣环境下电磁干扰的影响、 无安全隐患 存在； 通过光纤进行温度信号的传输， 信号传输距离远、 安全可靠及稳定； 实现采煤工 作面采空区进行大面积、 长距离、 大范围、 远距离、 长期的温度实时、 在线监测， 响应 时间短， 可及时并准确的提供采空区温度监测结果， 并对火灾进行提前预警及超限报警， 大大减少采空区煤自燃发火的事故发生， 适应了现在煤矿的安全高效生产， 满足煤矿井 下安全需要， 促进科研工作。 The invention adopts a fiber grating temperature sensor to monitor the temperature in the goaf, and is equipped with a high-end connection device such as a fiber grating static demodulator, a fiber end box and a fiber splitter, which has high temperature measurement precision, convenient installation and simple method, and optical fiber. The grating temperature sensor is intrinsically safe, can effectively avoid the influence of electromagnetic interference in complex and harsh environments, and has no hidden dangers; the temperature signal transmission through the optical fiber, the signal transmission distance is long, safe, reliable and stable; Large-area, long-distance, large-range, long-distance, long-term temperature real-time, on-line monitoring, short response time, timely and accurate provision of temperature monitoring results in goaf, early warning and over-limit alarm for fire, greatly reduced The accident of spontaneous combustion of coal in goaf occurs, adapting to the safe and efficient production of coal mines now, meeting the safety needs of underground coal mines, and promoting scientific research.
附图说明 DRAWINGS
图 1为本发明的感温监测***结构图。 1 is a structural view of a temperature sensing monitoring system of the present invention.
图中， 1、 光纤光栅静态解调仪； 2、 监控计算机； 3、 网络服务器； 4、 煤矿局域网；
5、 客户端； 6、 矿用传输光缆； 7、 光纤终端盒； 80、 第一通讯光纤； 81、 第二通讯光纤 9、 采煤工作面； 10、 监测测站； 11、 光纤光栅温度传感器； 12、 采空区； 100、 光纤尾 纤。 In the figure, 1, fiber grating static demodulation instrument; 2, monitoring computer; 3, network server; 4, coal mine local area network; 5, the client; 6, mining transmission cable; 7, fiber terminal box; 80, the first communication fiber; 81, the second communication fiber 9, coal mining face; 10, monitoring station; 11, fiber grating temperature sensor 12, gob area; 100, fiber pigtail.
具体实施方式 detailed description
下面结合附图对本发明的一个实施例作进一步的描述： An embodiment of the present invention will be further described below with reference to the accompanying drawings:
实施例 1 : 一种煤矿采煤工作面采空区光纤光栅感温监测***， 在采空区 12内布设 3~5个监测测站 10， 监测测站 10成行间隔排列， 行间隔距离为 15~20米， 每个监测测站 10内包括 10~12个光纤光栅温度传感器 11，光纤光栅温度传感器 11的间隔距离为 10~15 米， 通过光纤尾纤 100将监测测站 10内的光纤光栅温度传感器 11利用光纤熔接机熔接 或者光纤耦合器连接的方式串联在一起， 将光纤光栅温度传感器 11 的引出端光纤尾纤 100与第一通讯光纤 80和第二通讯光纤 81连接， 通过光纤终端盒 7将第一通讯光纤 80 和第二通讯光纤 80与矿用传输光缆 6连接，矿用传输光缆 6与光纤光栅静态解调仪 1的 输入端连接， 光纤光栅静态解调仪 1的输出端与监控计算机 2相连接， 监控计算机 2通 过网络服务器 3、煤矿局域网 4与客户端 5进行数据共享，形成煤矿采煤工作面采空区全 光纤通讯的光纤光栅感温监测***。 Embodiment 1 : A fiber grating temperature sensing system for a coal mining face in a coal mining face, 3 to 5 monitoring stations 10 are arranged in the goaf 12, and the monitoring stations are arranged at intervals of 10 rows, and the spacing distance is 15 ~20 meters, each monitoring station 10 includes 10~12 fiber grating temperature sensors 11, and the fiber grating temperature sensor 11 has a separation distance of 10~15 meters, and the fiber gratings in the station 10 are monitored by the fiber pigtails 100. The temperature sensor 11 is connected in series by means of a fusion splicer or a fiber coupler connection, and the lead fiber pigtail 100 of the FBG temperature sensor 11 is connected to the first communication fiber 80 and the second communication fiber 81 through the fiber terminal box. 7 connecting the first communication fiber 80 and the second communication fiber 80 to the mine transmission cable 6, the mine transmission cable 6 is connected to the input end of the fiber grating static demodulator 1, and the output of the fiber grating static demodulator 1 is The monitoring computer 2 is connected, and the monitoring computer 2 shares data with the client 5 through the network server 3, the coal mine local area network 4, and forms a gob of the coal mining face Fiber Bragg Grating Temperature Monitoring System for all-fiber communication.
所述的监测测站成行间隔排列， 行间隔距离为 15~20米。 The monitoring stations are arranged in a row at intervals of 15 to 20 meters.
所述的光纤光栅温度传感器间隔排列， 间隔距离为 10~15米。 The fiber grating temperature sensors are arranged at intervals of 10 to 15 meters.
所述的光纤光栅温度传感器串联在一起的连接方式为光纤尾纤通过光纤熔接机熔接 或者通过光纤耦合器连接在一起； 所述的光纤耦合器为常规的连接两条光纤的小设备。 The fiber grating temperature sensors are connected in series by the fiber pigtails being fused by a fiber fusion splicer or by a fiber coupler; the fiber coupler is a conventional small device connecting two fibers.
所述的监控计算机内嵌分析处理软件， 能够进行输入、 接收、 存储、 历史查询、 实 时画面显示、 列表显示、 报警预警。 The monitoring computer embedded analysis processing software can perform input, reception, storage, history query, real-time screen display, list display, and alarm warning.
一种煤矿采煤工作面采空区光纤光栅感温监测的方法： Method for monitoring temperature sensing of fiber grating in goaf of coal mining face:
a、 矿用传输光缆通过光纤终端盒分为两个通道， 两通道分别连接通讯光纤； b、在采空区内布先设一个监测测站， 在监测测站内间隔布置一组光纤光栅温度传感 器， 光纤光栅温度传感器的间隔距离为 10~15米， 通过光纤尾纤将监测测站内的光纤光 栅温度传感器串联在一起， 随着采煤工作面的向前推进， 间隔距离为 15~20米时布设下 一个监测测站， 直至完成设定的监测测站数目； a. The mining transmission cable is divided into two channels through the fiber end box, and the two channels are respectively connected to the communication fiber; b. First, a monitoring station is arranged in the goaf, and a set of fiber grating temperature sensors are arranged at intervals in the monitoring station. The fiber grating temperature sensor has a separation distance of 10 to 15 meters. The fiber grating temperature sensors in the monitoring station are connected in series through the fiber pigtail. As the coal mining face advances, the separation distance is 15-20 meters. Arrange the next monitoring station until the number of monitoring stations is set;
c、 两条通讯光纤布设至采煤工作面的上下两端头， 并与监测测站内光纤光栅温度传 感器的引出端光纤尾纤连接； c. Two communication optical fibers are arranged to the upper and lower ends of the coal mining working surface, and are connected with the fiber ends of the fiber grating temperature sensor in the monitoring station;
d、 所有的光纤光栅温度传感器安装好， 即进入工作状态， 监测采空区温度变化； e、将光纤光栅温度传感器采集的光波信号通过光纤及光缆传输至光纤光栅静态解调 仪， 通过光纤光栅静态解调仪将光波信号解调为数字信号， 然后传输至监控计算机， 通 过安装在监控计算机的分析处理软件进行数据处理， 实时显示采空区温度数据及变化趋 势， 当温度数据超过设定的采空区温度阈值时， 发生预警及报警；
f、 通过煤矿局域网和网络服务器， 将监测的采空区温度数据进行全矿共享， 实现对 采煤工作面采空区全天在线实时远程监测。 d. All the fiber grating temperature sensors are installed, that is, enter the working state, and monitor the temperature change of the gob; e. The optical wave signal collected by the fiber grating temperature sensor is transmitted to the fiber grating static demodulator through the optical fiber and the optical cable, and the fiber grating is passed through the fiber grating. The static demodulator demodulates the light wave signal into a digital signal, and then transmits it to the monitoring computer, and performs data processing through the analysis processing software installed in the monitoring computer to display the gob area temperature data and the change trend in real time, when the temperature data exceeds the set value. When the gob area temperature threshold occurs, an early warning and an alarm occur; f. Through the coal mine local area network and network server, the monitored goaf temperature data will be shared by the whole mine to realize online real-time remote monitoring of the goaf of the coal mining face.
本发明的煤矿采煤工作面采空区光纤光栅感温监测***及方法， 在采空区布置若干 监测测站， 测站内运用光纤光栅温度传感器， 井下利用光纤终端盒和光纤分路器等高端 连接设备， ***测温精度高、 安装方便、 方法简便， 光纤光栅温度传感器本质安全、 可 有效避免复杂恶劣环境下电磁干扰的影响、 无安全隐患存在； 通过光纤进行温度信号的 传输， 信号传输距离远、 安全可靠及稳定； 实现采煤工作面采空区进行大面积、 长距离、 大范围、 远距离、 长期的温度实时、 在线监测， 响应时间短， 可及时并准确的提供采空 区温度监测结果， 并对火灾进行提前预警及超限报警， 大大减少采空区煤自燃发火的事 故发生， 适应了现在煤矿的安全高效生产， 满足煤矿井下安全需要， 促进科研工作。
The invention discloses a fiber grating temperature sensing monitoring system and method in a coal mining face of a coal mining face of the invention, and arranges a plurality of monitoring stations in the goaf, uses a fiber grating temperature sensor in the station, and uses a high-end fiber terminal box and a fiber splitter in the underground. Connected equipment, system temperature measurement accuracy, easy installation, simple method, fiber grating temperature sensor is intrinsically safe, can effectively avoid the impact of electromagnetic interference in complex and harsh environments, no safety hazards; temperature signal transmission through optical fiber, signal transmission distance Far, safe, reliable and stable; Realize the real-time and on-line monitoring of large area, long distance, large range, long distance and long-term temperature in the goaf of coal mining face, with short response time, timely and accurate provision of gob temperature The monitoring results, early warning of fire and over-limit alarm, greatly reduce the occurrence of coal spontaneous combustion and fire accidents in the goaf, adapt to the safe and efficient production of coal mines now, meet the safety needs of coal mines, and promote scientific research.
Claims
1、 一种煤矿采煤工作面采空区光纤光栅感温监测***， 其特征是： 该监测***， 包 括光纤光栅静态解调仪、 监控计算机、 网络服务器、 客户端、 矿用传输光缆、 光纤终端 盒、 第一通讯光纤、 第二通讯光纤、 监测测站、 光纤光栅温度传感器、 光纤尾纤； 在采 空区内布设 3~5 个监测测站， 每个监测测站内包括 10~12个光纤光栅温度传感器， 每个 监测测站内的光纤光栅温度传感器之间通过光纤尾纤串联在一起， 将光纤光栅温度传感 器的引出端光纤尾纤分别与第一通讯光纤和第二通讯光纤连接， 通过光纤终端盒将第一 通讯光纤和第二通讯光纤与矿用传输光缆连接， 矿用传输光缆与光纤光栅静态解调仪的 输入端连接， 光纤光栅静态解调仪的输出端与监控计算机相连接， 监控计算机通过网络 服务器、 煤矿局域网与客户端进行数据共享， 形成煤矿采煤工作面采空区全光纤通讯的 光纤光栅感温监测***。 1. A fiber grating temperature sensing monitoring system for the goaf area of a coal mine working face, characterized by: The monitoring system includes a fiber grating static demodulator, a monitoring computer, a network server, a client, a mining transmission optical cable, and an optical fiber Terminal box, first communication fiber, second communication fiber, monitoring station, fiber grating temperature sensor, fiber pigtail; 3 to 5 monitoring stations are arranged in the goaf area, each monitoring station includes 10 to 12 Fiber Bragg grating temperature sensor. The fiber Bragg grating temperature sensors in each monitoring station are connected in series through fiber pigtails. The fiber pigtails at the leading end of the fiber grating temperature sensor are connected to the first communication fiber and the second communication fiber respectively. Through The optical fiber terminal box connects the first communication optical fiber and the second communication optical fiber to the mining transmission optical cable, the mining transmission optical cable is connected to the input end of the fiber grating static demodulator, and the output end of the fiber grating static demodulator is connected to the monitoring computer. , the monitoring computer shares data with the client through the network server and coal mine LAN, forming a fiber grating temperature sensing monitoring system for all-fiber communication in the goaf area of the coal mining working face.
2、 根据权利要求书 1 所述的一种煤矿采煤工作面采空区光纤光栅感温监测***， 其 特征在于： 所述的监测测站成行间隔排列， 行间隔距离为 15~20米。 2. A fiber grating temperature sensing monitoring system for the goaf area of the coal mine working face according to claim 1, characterized in that: the monitoring stations are arranged in rows at intervals, and the row spacing distance is 15 to 20 meters.
3、 根据权利要求书 1 所述的一种煤矿采煤工作面采空区光纤光栅感温监测***， 其 特征在于： 所述的光纤光栅温度传感器间隔排列， 间隔距离为 10~15米。 3. A fiber grating temperature sensing monitoring system for the goaf area of a coal mine working face according to claim 1, characterized in that: the fiber grating temperature sensors are arranged at intervals of 10 to 15 meters.
4、 根据权利要求书 1 所述的一种煤矿采煤工作面采空区光纤光栅感温监测***， 其 特征在于： 所述的光纤光栅温度传感器串联在一起的连接方式为光纤尾纤通过光纤熔接 机熔接或者通过光纤耦合器连接在一起。 4. A fiber grating temperature sensing monitoring system for the goaf area of a coal mine working face according to claim 1, characterized in that: the fiber grating temperature sensors are connected in series by an optical fiber pigtail passing through an optical fiber. Fusion splicers splice or connect them together through fiber optic couplers.
5、 根据权利要求书 1 所述的一种煤矿采煤工作面采空区光纤光栅感温监测***， 其 特征在于： 所述的监控计算机内嵌分析处理软件， 能够进行输入、 接收、 存储、 历史查 询、 实时画面显示、 列表显示、 报警预警。 5. A fiber grating temperature sensing monitoring system for the goaf area of a coal mine working face according to claim 1, characterized in that: the monitoring computer has embedded analysis and processing software capable of inputting, receiving, storing, Historical query, real-time screen display, list display, and alarm warning.
6、 一种煤矿采煤工作面采空区光纤光栅感温监测的方法， 其特征在于： 方法步骤 为： 6. A method for fiber grating temperature sensing monitoring in the goaf area of a coal mine working face, which is characterized by: The method steps are:
a、 矿用传输光缆通过光纤终端盒分为两个通道， 两通道分别连接通讯光纤； b、 在采空区内布先设一个监测测站， 在监测测站内间隔布置一组光纤光栅温度传感 器， 光纤光栅温度传感器的间隔距离为 10~15 米， 通过光纤尾纤将监测测站内的光纤光 栅温度传感器串联在一起， 随着采煤工作面的向前推进， 间隔距离为 15~20 米时布设下 一个监测测站， 直至完成设定的监测测站数目； a. The mine transmission optical cable is divided into two channels through the optical fiber terminal box, and the two channels are connected to the communication optical fiber respectively; b. Set up a monitoring station in the goaf area, and arrange a set of fiber grating temperature sensors at intervals in the monitoring station. , the spacing distance of the fiber grating temperature sensors is 10~15 meters. The fiber grating temperature sensors in the monitoring station are connected in series through fiber pigtails. As the coal mining face advances, the spacing distance is 15~20 meters. Deploy the next monitoring station until the set number of monitoring stations is completed;
c、 两条通讯光纤布设至采煤工作面的上下两端头， 并与监测测站内光纤光栅温度传 感器的引出端光纤尾纤连接； c. Two communication optical fibers are laid to the upper and lower ends of the coal mining face, and connected to the optical fiber pigtails at the lead-out of the fiber grating temperature sensor in the monitoring station;
d、 所有的光纤光栅温度传感器安装好， 即进入工作状态， 监测采空区温度变化； e、 将光纤光栅温度传感器采集的光波信号通过光纤及光缆传输至光纤光栅静态解调 仪， 通过光纤光栅静态解调仪将光波信号解调为数字信号， 然后传输至监控计算机， 通 过安装在监控计算机的分析处理软件进行数据处理， 实时显示采空区温度数据及变化趋 势， 当温度数据超过设定的采空区温度阈倌时， 发生预警及报警；
f、 通过煤矿局域网和网络服务器， 将监测的采空区温度数据进行全矿共享， 实现对 采煤工作面采空区全天在线实时远程监测。
d. After all the fiber Bragg grating temperature sensors are installed, they enter the working state and monitor the temperature changes in the goaf area; e. Transmit the light wave signal collected by the fiber Bragg grating temperature sensor to the fiber Bragg grating static demodulator through the fiber and optical cable. The static demodulator demodulates the light wave signal into a digital signal, and then transmits it to the monitoring computer. The data is processed through the analysis and processing software installed on the monitoring computer, and the temperature data and changing trend of the goaf area are displayed in real time. When the temperature data exceeds the set value When the temperature in the goaf area reaches the threshold, early warning and alarm will occur; f. Through the coal mine LAN and network server, the monitored goaf temperature data will be shared throughout the mine to realize online real-time remote monitoring of the goaf area on the coal mining face all day long.
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| AU2014289870A AU2014289870B2 (en) | 2013-07-08 | 2014-01-27 | Optical fiber grating temperature-sensing monitoring system and method for coal-mining working surface goaf in coal mine |
| RU2016103330A RU2620324C1 (en) | 2013-07-08 | 2014-01-27 | Carried out on the basis of lattice fiber-optic system of monitoring and temperature measurement and corresponding way for developed action slaughtering space in coal mining |
| ZA2016/00755A ZA201600755B (en) | 2013-07-08 | 2016-02-03 | Optical fiber grating temperature-sensing monitoring system and method for coal-mining working surface goaf in coal mine |
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| CN201310285515.6 | 2013-07-08 | ||
| CN201310285515.6A CN103364104B (en) | 2013-07-08 | 2013-07-08 | System and method for sensing and monitoring temperature of fiber bragg grating in goaf of coal mine coalface |
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Cited By (1)
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| CN107178386A (en) * | 2017-07-24 | 2017-09-19 | 贵州大学 | A kind of system for preventing goaf coal body spontaneous combustion |
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| CN103364104B (en) * | 2013-07-08 | 2015-04-01 | 中国矿业大学 | System and method for sensing and monitoring temperature of fiber bragg grating in goaf of coal mine coalface |
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| CN111119859B (en) * | 2019-12-20 | 2020-11-20 | 中国石油大学(华东) | Near-bit multi-parameter measurement system and method based on fiber bragg grating |
| CN111562033B (en) * | 2020-05-07 | 2021-06-29 | 中国水利水电科学研究院 | Monitoring system and method for preventing fire caused by weeds under photovoltaic panel |
| CN111594252B (en) * | 2020-05-26 | 2022-06-10 | 辽宁工程技术大学 | Prevention and control system and prevention and control method for spontaneous combustion of coal in goaf during mining of extremely spontaneous combustion coal seam |
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| AU2014289870B2 (en) | 2017-06-15 |
| ZA201600755B (en) | 2017-09-27 |
| CN103364104A (en) | 2013-10-23 |
| AU2014289870A1 (en) | 2016-02-25 |
| CN103364104B (en) | 2015-04-01 |
| RU2620324C1 (en) | 2017-05-24 |
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