Research on Vibration Signal Characteristics of Multilateral Boundary Deep Hole Blasting

Abstract The essence of blasting action is the interaction between explosive energy and medium, effect depends on characteristics energy, medium law. multi-boundary comprehensive theory stonework establishes functional relationship among boundary conditions, throwing rate quantity. In this paper, a formula for calculating charge deep-hole put forward, experimental study carried out based HHT analysis technology. Research shows that: (1) Based technology, main frequency vibration signal in 0–40 Hz, mainly low band, while contained high component gradually decays. (2) Multi-boundary controlled has evenly broken rock blocks all collapsed within design range, which achieved good effect.