Study on Influencing Factors and Countermeasures of Mine Gas Grade Identification

Abstract

This paper analyzes the significance of mine gas grade identification, that is, dividing the mine into different gas grades, selecting different grades of explosion-proof equipment, selecting different technical protective equipment and implementing different ventilation gas management systems according to the air volume required for different supply of mine gas grades, and implementing graded management, which is economical, reasonable, safe and reliable to ensure mine safety production. According to the commonly used gas grade identification methods, the factors affecting the identification results are analyzed. Through the comparison of a large number of identification data, the analysis and research shows that the identification time, mine output and calculation method are the three main factors affecting the identification results. The problems easily occurred in the appraisal process are analyzed, mainly including the layout of appraisal measuring points, the analysis of mine gas source is not specific, the test of mine air volume data is not accurate, the calculation results of mine gas appraisal are wrong, and the influence of mining geological factors on gas emission is not considered. According to the influencing factors, this paper puts forward three corresponding countermeasures to improve understanding, strengthen organization and leadership and improve training quality, which has certain guiding significance to improve the accuracy of appraisal results.