Research On Comprehensive Evaluation Of Gas In Coal Mine Based On Cloud Model

As the basic energy of coal, it has a high reputation of black gold, and it has played a huge role in promoting the modernization of our country. But the process of coal mining will inevitably lead to accidents, brought huge casualties and the destruction of the ecological environment for the country and the people. Because of the complexity of the coal mine safety production environment, risk factors that affect the security of the whole system are also numerous and multifarious types. The coal mine gas occupies an important position in several major hazards in mine, caused a major security risk of coal mine safety. As can be seen, controlling gas accidents is a more urgent problem in the coal mine safety, effectively prevent gas accidents and safety production situation improved, is our foremost task. Based on the background of the coal mine in typical coal mining, considering the uncertainty of all kinds of hazards in coal mine in the mine, the characteristics of uncertainty, risk index of gas properties expressed by cloud model based on the combination of fuzzy and random reference, using the idea of fuzzy reasoning for reference, researching by comprehensive evaluation of gas in coal mine based on cloud model. This paper includes the following three aspects:1.Using which often appears in the coal mine, and can affect the parameters of running state of work in the mine, as the evaluation index system of comprehensive risk assessment of coal mine gas, according to the three kinds of hazard principle,constructing layered coal mine gas comprehensive risk evaluation index system structure, and the qualitative indexes and quantitative risk index of gas the risk evaluation of gas are quantified and standardized calculation.2.The establishment of a cloud model of multi-level coal mine gas comprehensive risk evaluation index system structure, and transform it into a comprehensive evaluation of coal mine gas risk based on cloud model.3.From the cloud gravity inference method, the comprehensive evaluation of coal mine gas risk method based on cloud model. First of all, according to the degree of risk of coal mine gas comprehensive risk evaluation of cloud model in differentsettings, initialize the X condition cloud generator; then, through the historical experience of mine professionals, establishing scientific reasoning rules, combined with the X cloud generator bottom-up reasoning, get the final risk value of coal mine gas; finally. The risk evaluation value is uncertain, can increase the number of reasoning to reduce the impact on the risk assessment is worth. Through the monitoring of coal mine 20 mine actual data and combined with the expert scoring,the method of practical application.