Science and Technology of Energetic Materials

Vol.65, No.2 (2004)発破特集号

Research paper

Study on vibration effects of decked charge in bench blasting
Yang Jun, Liu Guo-zhen, and Lv Shu-ran


By analyzing the vibration signals of three different decoupling decked charges measured in a mine, the vibration effects is discussed by Fourier analysis and wavelet (packet) analysis. From the time-frequency analysis, it is found that the vibration effect of three charge structures is different. The vibration effect decked with rock powder is the most intensive; while that with water is inferior, and that with air is the minimum. As a result, the method decked with water or air is of benefit to the improvement of blast quality and the protection of slope.

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