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《Explosion and Shock Waves》 2004-04
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A study on the fractal dimension of blasting seismic waves

LOU Jian-wu, LONG Yuan, XU Quan-jun, WAN Wen-qian(Engineering Institute of Engineer Corps,PLA University of Science and Technology, Nanjing 210007, Jiangsu, China)  
Blasting experiments in deep-holes have been carried out on a rock site,and the resulting blasting seismic waves were measured. The relationship among the blasting seismic wave attenuation parameters K, α, the fractal box dimension D and the fitting parameter b in the formula -lg(kδ)-lgN_(kδ) for the box dimension computation.The box dimension of measured seismic wave signals were calculated with the double-scaled rectangle box model method. The results in this paper show that the blasting seismic wave box dimensions value D distributes in a small range.It is concluded that the box dimension D is a characteristic parameter related to the test field conditions, and approximately α≈2D. The effects of explosive charge and the measurement distance on the parameter b are obvious. The fitting relationship between parameter b and the amplitude of blasting seismic wave A is b=0.689×lgA+3.669.
【Fund】: 国家自然科学基金项目(10372117)
【CateGory Index】: TB41
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