Coal mine spontaneous fire fiber temperature detection beam tube monitoring system and method

Abstract

The invention relates to a coal mine spontaneous fire fiber temperature detection beam tube monitoring system and a method, and belongs to the field of coal mine spontaneous fire tendency monitoring and predicting. The coal mine spontaneous fire fiber temperature detection beam tube monitoring system comprises a beam tube monitoring system, distributed fiber temperature detection monitoring systems and a monitoring and analyzing system, wherein the beam tube monitoring system and the distributed fiber temperature detection monitoring systems are respectively connected with the monitoring and analyzing system. The method comprises the following steps: A, the beam tube monitoring system collects underground gas, detects and analyzes gas elements, and transmits data to a monitoring mainframe; B, the monitoring mainframe computes collected gas elements and contents of the collected gas elements according to the data obtained in the step A, and judges fire tendency according to gas element change; C, the distributed fiber temperature detection systems utilize a Raman scattering effect to obtain a temperature change curve of a whole fiber at different positions, and transmit the associated data to the monitoring mainframe; D, the monitoring mainframe receives the data obtained in the step C in real time; E, the monitoring mainframe performs correlation statistic analysis on the data obtained in the step D, determines the fire tendency and determines the position of a fire source point. According to the coal mine spontaneous fire fiber temperature detection beam tube monitoring system and the method, the firing tendency can be judged, and meanwhile, the position of the fire source point can be determined.

Description

technical field [0001] The invention relates to a coal mine spontaneous combustion fire optical fiber temperature measurement beam tube monitoring system and method, belonging to the field of monitoring and forecasting coal mine spontaneous combustion and ignition trends. Background technique [0002] According to statistics, in the coal mines exploited in my country, mines with the risk of spontaneous combustion account for about 70% of the total number of mines, spontaneous combustion coal seams account for 80% of the cumulative mineable coal seams, and the number of spontaneous combustion fires accounts for 10% of the total number of mine fires. More than 94%. Therefore, the prevention of spontaneous combustion accidents must become the focus of coal mine safety research. Timely and accurate early warning of fire, and timely determination of the location of the fire source, not only can timely take fire prevention measures to eliminate fire accidents in the bud, but also ...

AI Technical Summary

Problems solved by technology

The mine safety bundle tube monitoring system uses the bundle tube to extract and summarize the air from all parts of the underground to the designated place, and then analyzes the air samples collected by the tube bundle with the help of a chromatographic detection device to realize the detection of CO, CO 2 、CH 4 、C 2 h 4 、C 2 h 6 , O 2 , N 2 On-line monitoring of gas content, the analysis results can be automatically stored in the database while providing data in two ways: real-time monitoring report and daily analysis, so as to analyze the changing trend of a certain gas content in the future, thus realizing Early prediction of spontaneous combustion fires in mines. However, due to the large area of ​​mines, it is difficult to find the source of fire. Sometimes in order to avoid explosions or large fires, mines have to be closed, resulting in huge economic losses

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