A new appraisal method for safety of blasting vibration equivalent energy based on EEMD technology is proposed to deal with the safety criterion defects for blasting vibration and choice-making dilemma of mother wavelet and decomposition scales of wavelet packets equivalent energy. To begin with, the blasting vibration wave is EEMD-decomposed and the principal IMF components causing damage is identified. Then, the energy and frequency of principal IMF components are calculated, as well as equivalent energy computation considering the natural frequency of compounds for safety appraisal is conducted. It is deduced that the safety threshold of blasting vibration equivalent energy in the mine is 1.0×10^-7 J, based on collected blasting vibration field data, calculated equivalent energy of signals, and situation of on-site destruction.

blasting vibration  /  ensemble empirical mode decomposition  /  equivalent energy  /  advantage components  /  safety threshold