Abstract:

In the mine operation，accurate monitoring and control of the concentration of toxic，harm⁃

ful and combustible gases is very important for the safe operation of miners.A mine gas monitoring system

based on TDLAS technology is proposed. The system consists of a laser emission unit，a spectral analysis

unit，a data acquisition and processing unit，and an early warning and control unit.Using the advantages of

high selectivity and high sensitivity of TDLAS technology，the absorption spectra of specific gas molecules

are accurately measured，so as to realize the rapid and accurate identification and quantification of various

gas components in the mine.Through on-site testing，the system can operate stably in a complex mine envi⁃

ronment，monitor key gas indicators such as methane，carbon monoxide and ethylene in real time，and is⁃

sue early warning signals in a timely manner through data analysis.

Key words:

TDLAS technology, mine gas detection, spectral analysis