Application Of Improved Fuzzy Grey Model To Prediction Of Deformation Of Surrounding Rock In Deep Tunnel

How to make effective and scientific predictions for something that will happen in the future has become an important topic for discussion.Since they can provide important informations for us to make correct decisions,more and more scholars and experts have been paying attention to it.The basis for the rapid development of computer software also provides a useful tool for predicting complex things.Starting from the requirements of intelligent and precise construction,it is of great significance to predict the deformation of surrounding rock,which can help us to predict the deformation trend of roadway surrounding rock in advance.At present,there are many methods to predict the deformation of roadway surrounding rock.This paper will introduce the fuzzy gray prediction model which can solve the problem of roadway surrounding rock deformation.In this model,we can effectively predict the deformation of roadway surrounding rock,so as to make effective control of roadway surrounding rock.In this paper,according to the fuzzy grey model of FGM,we build an improved fuzzy grey forecasting model of IFGM,which based on the grey model of GM of the surrounding rock deformation of the original roadway.The model of the IFGM also lead into some concepts of fuzzy mathematics.Firstly,we analysis the roadway deformation of the five factors and sensitivity of these influencing factors,and determine the parameters.On this basis,the mechanical characteristic parameters of roadway rock mass are analyzed,and the concrete indexes and parameters affecting the surrounding rock deformation problem of roadway are obtained by using the data statistics and analysis software.Finally,an improved fuzzy grey prediction model is constructed based on the grey theory and fuzzy mathematics principle.It is proved that the accuracy of the model is obviously superior to that of the previous model.In this paper,an improved grey prediction model is constructed by using fuzzy mathematics method,which enriches the prediction method of surrounding rock deformation,and applies it to the control of surrounding rock deformation of roadway,which can be used to judge the state of surrounding rock in advance in the actual production process.It further improves the safety of deep coal mining.