Study on Grey Forecasting of Slope Deformation with Mutation Data in Extra-large Cross-section and Cow Flat-ratio Tunnel
Ran Wan-yun · Chinese Journal of Underground Space and Engineering · 2009
By using investigation information of slopes development,the grey system theory can be applied to forecast the unknown deformation of slopes.When some factors become the main influencing ones to the deformations of slopes,by using equal interval time series,the monitoring data can not reflect the correct deformation of slopes and then the wrong forecast will be made.The method for dealing with the mutation data was put forward.And based on the monitoring data in the entrance slope of the extra-large cross-section and cow flat-ratio tunnel,this paper applied the time series by the method for dealing with mutation to forecast the deformation of slopes.The prediction results agree well with the real deformations,which is much more accurate than the former.