Coal mine underground safety comprehensive monitoring system based on fiber grating sensors

Abstract

A coal mine underground safety comprehensive monitoring system based on fiber grating sensors and belongs to a coal mine underground safety monitoring system. The system comprises an aboveground part and an underground part; the aboveground part comprises a static fiber grating demodulator, a computer data processing system, a printer, a server and a client; the underground part comprises an optical switch array, a working face safety monitoring subsystem and a laneway safety monitoring subsystem; each of the two monitoring subsystems at least comprises a monitoring base station; each monitoring base station at least comprises a survey station; each survey station is corresponding to one group of fiber grating sensors; the advantage is that the system adopts multiple survey stations to perform underground multi-parameter monitoring, integrates the fiber grating sensors, adopts all-optical survey and optical fibers for signal transmission, is intrinsically safe, has high anti-electromagnetic interference capability and a good monitoring effect, realizes real-time continuous long-term on-line monitoring and the sharing of data in an entire mining area to better guide the safety production of a coal mine, can effectively reduce safety accidents of the coal mine and realizes safe and efficient production of the coal mine.

Description

technical field [0001] The invention relates to an underground coal mine safety monitoring system, in particular to an underground coal mine safety comprehensive monitoring system based on an optical fiber grating sensor. Background technique [0002] In recent years, with the continuous improvement of mining technology, my country's coal mining industry has developed better and faster. As the basis for the development of other industrial sectors in our country, the safe production of coal mines plays a very important role in the social progress and the improvement of the national economy. However, as the mining depth of coal mines continues to increase, the mine pressure of coal mines and the safety pressure of coal mines are more obvious, and the disasters caused are becoming more and more serious, such as roof caving, roadway deformation, impact mine pressure, gas explosion, coal mine disasters, etc. Accidents such as water inrush and coal mine fire occur frequently, whic...

AI Technical Summary

Problems solved by technology

However, the above monitoring methods still have the following disadvantages: 1. They are susceptible to electromagnetic interference and external environment interference, and the monitoring accuracy is not good; 2. They are not moisture-proof, have low reliability and short service life, and cannot meet the requirements of long-term monitoring; 3. Independent layout and Manual reading or infrared data collection, so the degree of automation is low and data collection is inconvenient

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