Recognization and application of delay time interval in millisecond blasting based on HHT method
Feng Wei-ta · Shanxi Architecture · 2011
Combining with the practice of some blasting project,this paper applied the HHT method.Firstly,blasting vibration signal decomposition used by EMD method,and the IMF was obtained.Secondly,the real blasting time of detonator can be recognized by Hilbert transforming in IMF,and get the real delay time interval in millisecond blasting.Known as its characteristics of self-adaption and good efficiency,HHT method can be means for design of parameters of millisecond blasting delay time in this paper.