Correlation Analysis On Gas Emission Characteristics And Its Influencing Factors In Hong Shiyan Coal Mine

Mine accidents greatly threatened the staff's life safety and the property safety of the coal mine.With the increase of mining depth and the speeding up of the working face advancing speed,abnormal gas emission has also appeared in a lot of low gas mines.So research the mine gas low gas influencing factors has important significance for gas emission control.In this paper,Hong Shiyan coal mine 12406 working face as the research object,absolute gas emission,and the return air along the trough in upper corner gas concentration of influential factors were analyzed,then Looking for the most significant factors that influence on gas emission.Combined with the regression analysis,significant factors and absolute gas emission and gas concentration curve fitting,mathematical relationship to further demonstrate how these factors affect the gas emission.To analysis the data collected from red rock coal mine 12406 working face.It is concluded that coal seam thickness and advancing the quantity and absolute gas emission by using SPSS correlation analysis.Floor elevation was associated with a significant return air along the trough the gas concentration,atmospheric pressure and the concentration of gas in upper corner.With advancing the quantity of coal seam thickness and absolute gas emission by regression analysis.It is concluded that the two factors and absolute gas emission conforms to the tendency of the cubic curve.For floor elevation and the return air along the trough the gas concentration in the regression analysis,it is concluded that both conforms to the S curve change trend,the atmospheric pressure and the upper corner gas concentration by regression analysis,it' is concluded that both conforms to the trend of S type curve change.The cumulative penetration and gas concentration were analyzed,and the return air along the trough that face didn't advance 25 to 30 meters,return air along the trough gas concentration will appear a peak.Atmospheric pressure variation and the upper corner gas concentration were analyzed,and concluded how atmospheric pressure change is directly influence factors of the gas concentration change in upper corner.