Evaluation And Application Of Mine Gas Drainage System Based On Extenics

In recent years,with the increase in the demand for coal in my country's society and industrial development,the mining depth of coal mining enterprises has also continued to deepen,and the number of coal mine gas accidents and the death toll are still high.According to various solutions to the current research on gas problems,gas drainage has always been one of the most commonly used and most effective methods to prevent gas disaster accidents and control gas.Through the establishment of coal mine gas drainage system,not only can the mine gas concentration be well reduced,and the normal and safe production of the coal mine can be ensured,but the gas can also be collected and effectively used to protect the natural environment.In order to effectively solve the problems of outdated safety evaluation me thods for gas drainage systems in coal mines,lack of evaluation index systems for gas drainage systems,and a single method for calculating evaluation index weights.This paper analyzes and determines the three major factors affecting the gas extraction system of coal mines by studying the development and trend of the current situation at home and abroad,aiming at the current laws and r egulations on gas extraction in my country,and combining the actual coal mini ng enterprise extraction work.Environment,gas drainage device,gas drainage management.Combined with the actual mine,the coal mine gas drainage syste m evaluation index system was constructed,and the simple correlation function method was used to quantitatively analyze and calculate the secondary index weight,and then the analytic hierarchy process was used to calculate the index qualitatively,and finally the final weight was determined by the comprehensiv e integrated weighting method,which more objectively ensures the scientific rat ionality of the evaluation indicators.This paper introduces extension theory,and builds an extension model for the evaluation of coal mine gas drainage system through the analysis of extension engineering methods and test mine gas drainage system evaluation indicators and actual situation analysis.The gas drainage management carries out the first-level extension evaluation,and then the second-level extension evaluation is carried out through the correlation calculation.The final calculation obtains the maximum comprehensive correlation degree of the comprehensive extension evaluation is0.1343,the characteristic value of the grade variable j*is 2.4084,and the evaluation grade is obtained.j~0 is grade?,which the evaluation result is"good",and is biased to grade?,and the extension evaluation result is consistent with the actual situation.It shows that the application of extension theory in the evaluation of coal mine gas drainage system is effective and applicable.