Early warning system and method of coal and gas outburst in coal mining working face based on infrared thermal images
A coal mining face and infrared thermal imaging technology, which is applied to mining equipment, mining equipment, earthwork drilling, etc., can solve the problems of high false alarm rate and missed alarm rate, and difficulty in meeting safety production in coal mines.
Active Publication Date: 2017-04-19
LIAONING TECHNICAL UNIVERSITY
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At present, the non-contact early warning methods proposed for coal and gas outburst include microseismic monitoring and early warning, acoustic emission monitoring and early warning, electromagnetic radiation monitoring and early warning, charge induction prediction, and coal infrared temperature detection. Infrared temperature detection usually uses thermometers, infrared sensors, etc. Thermal imaging detects coal body temperature, but the false alarm rate and false alarm rate are still high, which is difficult to meet the needs of coal mine safety production
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[0058] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0059] Coal and gas outburst warning system in coal mining face based on infrared thermal image, such as figure 1 As shown, it includes: a monitoring host 101 , a data server 102 , a DLP screen 103 , a first switch 104 , a second switch 105 , and a coal mining face data acquisition module 106 .
[0060] In this embodiment, there are three coal mining face data acquisition modules 106, the second switch 105 and each coal mining face data acquisition module 106 are arranged on the corresponding coal mining work plane under the coal mine, and the monitoring host 101, data The storage unit 102, the DLP screen 103, and the first switch 104 are arranged on the coal mine shaft.
[0061] In this embodiment, each coal mining face data acquisition unit 106 includes a serial port server 107, a DAQ data acquisition unit 108, three infrared thermal im...
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The invention provides an early warning system and method of coal and gas outburst in a coal mining working face based on infrared thermal images. The system comprises a monitoring host, a data server, a DLP screen, a first switch, a second switch, and coal mining working face data collection modules. Each coal mining working face data collection module comprises a serial port server, a DAQ data collection unit, N infrared thermal image sensors, M temperature sensors, and I methane sensors. The method analyzes whether the gas concentration value exceeds the standard, infrared thermal image cracks, and changing status of the infrared thermal map temperature field distribution state of each current coal mining working face monitored area according to the gas concentration value, an infrared thermal image temperature field gradient change matrix, an infrared thermal image adjacent point temperature gradient value and an infrared thermal image gray scale difference matrix [Delta]GN of the monitored area, determines the risk status, and sends alarm signals and low warning signals. The method can effectively avoid casualties and economic losses caused by gas outburst accidents.
Description
technical field [0001] The invention belongs to the technical field of mine gas monitoring safety, and in particular relates to a coal and gas outburst early warning system and method based on infrared thermal image in coal mining face. Background technique [0002] Coal plays a major role in my country's primary energy consumption. Coal and gas outbursts are one of the primary factors restricting the safe and healthy production of coal enterprises in my country. With the increase of coal mine mining depth, coal and rock outbursts and other coal-rock dynamic disasters are becoming more and more serious. The danger of outbursts is increasing, and the intensity and frequency of outbursts are gradually increasing. Therefore, it is very important to prevent coal and gas outburst dynamic disasters. [0003] Coal and gas outburst is an extremely complex dynamic disaster phenomenon of gas-containing coal bodies. With a strong sound, this phenomenon occurs in a short time (tens of s...
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Login to View More IPC IPC(8): E21F17/18G01D21/02
CPCE21F17/18G01D21/02
Inventor 代巍付华
Owner LIAONING TECHNICAL UNIVERSITY