Research On Coal Spontaneous Combustion Multi-parameter Forecast Indicators In Gob Of Big Buddha Temple Coal Mine

Big Buddha Temple coal mine is belong to II easy to cause the spontaneouscombustion.,and influence each other.This paper is mainly focused on the mine of NO.40110work face of Big Buddha Temple coal mine produce a large amount of CO in the early brokenoxidation,and it is hard to judge early about if begin spontaneous combustion in the goaf withif concentration of CO exceed24ppm.So we need to build up a forecasting system aboutmulti-index gas parameters early-warning for Big Buddha Temple coal mine.This paper is tested by XK-VI coal spontaneous combustion experiment set of Xianuniversity of science and technology for Big Buddha Temple coal,and actual simulationprocess of coal spontaneous combustion,to analysis of the spontaneous combustioncharacteristic parameters and the multi-index gas change law in the process of experiment ofBig Buddha Temple coal.and at the same time to combined with field observations. Initiallyestablishing the forecasting system with multi-index gas parameters include CO/CH4、C2H6/CO、CO/CO2、CO/△O2、△CO/△O2、Graham index.And analysis the influence of differentoxygen concentration to index gas of Big Buddha Temple coal.Optimize the multi-index gasfilter.Apply the oxygen concentration as5%、9%、17%、21%of gas for Big Buddha Templecoal with digital temperatrure programmed experimental.Final,studies in the process ofexperimental temperature programmed of Big Buddha Temple mine:the multi-index gasparameters include CO/CH4、C2H6/CO、Graham index affected by the air volume and thechange of oxygen concentration is smaller.Based on actual simulation process of experimental、coal mine gas analysis、temperatureprogrammed experimental.The paper was studied with multi-index gas parameters include CO/CH4、C2H6/CO、Graham index for forecasting system early-warning for Big Buddha Templecoal mine.Can probide effectively for early forecasting coal spontaneous combustion for BigBuddha Temple coal mine.Improve a monitoring level for coal mine.To prevent thespontaneous combustion of coal mine.