| The small structure in coal mine not only has the significant influence to the coal mine production,but also it is the inducing factors of absolute majority of the mine disaster,and even the small fault may also cause major accidents.Therefore,it has the important theory significance and practical value to the coal mine production and disaster prevention that improve the reliability of prediction,and realize quantified,refined and practical prediction of small structure.This paper aims at the problems such as single analysis method,limited application domain and poor practicability.According to the characteristics of small structure analysis,research at the methods of feature extraction for quantitative analysis.Constructing BPA based on feature extraction and the framework of spatial analysis and identification of small structure,then construct spatial analysis model of mine small structure based on evidence theory.Finally,the reliability of the results of the model analysis is proved by the cross test method and the example.The main results:(1)BPA based on feature extraction.According to the characteristics of small structure analysis,research at the methods of feature extraction for quantitative analysis.Constructing BPA based on feature extraction.This BPA is aim at spatial analysis of mine small structure.(2)Spatial analysis model of mine small structure based on evidence theory.According to the BPA based on feature extraction,constructing the framework of spatial analysis and identification of small structure and establish the small structure prediction model.(3)Reliability of model.Analyze the reliability of the forecast results,and find the causes and countermeasures for the uncertainty of small structure prediction.According to the process and algorithm of the structure prediction based on DS evidence theory,a complete,practical prediction technology system will be constructed and the corresponding software system will be developed. |
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