Study On Predicting Alarm And Analysis Of Gas Concentration In 2101 Working Face Of Changcun Coal Mine

Both the domestic and foreign research shows that coal mine monitoring data processi ng and application,prediction method of gas concentration and application of gas concentra tion,based on 2101 face in Changcun coal mine gasmonitoring and data characteristics by pretr eatment of the gas monitoring data,gas emission prediction method is proposed,as well as earl y warninganalysis method based on prediction of gas emission quantity.Data pretreatment of gas monitoring,through the exception data missing data substitution,p added,denoising method,eliminates the monitoring of gas monitoring system in the process of d ata production,monitoring system as well as human factors,such as the interference of monito ring results,as much as possible to maintain the authenticity and integrity of the data.In the dat a pretreatment based on by calculating indices for raw gas emission of the chaotic time series ide ntification,choose a suitable time delay ? and embedding dimension m,for phase space reconst ruction and establishment of mathematical model of gas emission quantity predicted.Analysis o n abnormal gas concentration for gas concentration prediction and early warning grade achieve d fine analyzing real-time dynamic gas emission data.Based on the 2101 face in monitoring and control system of Changcun coal mine gas conc entration monitoring in real-time collection of data for thestudy,trying to keep the data authentic ity and integrity based on forecastand early-warning analysis,gas disaster in coal mine safety w arning andreasonable decision,effectively engaged in emergency intervention to advance after tr ansfer of the disasterprevention,to improve ventilation in coal mine safety managementand th e disaster prevention level is of great practical significance.