A multi-dimensional grey state model on parameter system of fully mechanized coal faces

In view of the fact that fully mechanized coal faces have many influence factors and its complexity in system,the paper thoroughly analyses the input and output parameters of fully mechanized coal faces.On the basis of the statistical data of fully mechanized coal faces,a number of input parameters are dealt with quantitatively and comprehensively according to fuzzy mathematic theory,the grey interaction analysis method and the method of step weight analysis.By the further application of grey modeling theory,the multi-dimensional grey state model GM(0,4) model with the production and efficiency as the two items of output and input parameters are established.It is proved that the  model has certain accurac y and it has certain guiding effect for production on fully mechanized coal faces.This study provide s a ne w approac h fo r studyin g the parameter system of full-mechanized coal faces.