Application of the Fractal Box-counting Dimension to the Analysis of Blasting Seismic Signal
In order to study the characteristic of blasting seismic wave further, this paper firstly proves the fractal character of particle vibration in rock mass from blasting theoretically. Secondly, it proposes a novel fractal box-counting dimension model to compute the fractal dimension of the blasting seismic signal according to the feature of blasting seismic signals double-scaled. In this model, the rectangle griddling is applied to cover the curve of signal, in which the transverse side δ1 is time and longitudinal side δ2 is swing that are decided by the signals maximum amplitude. The maximum and minimum value of k in no-scaled region is decided by confirming the main vibration period T in the effective record of blasting seismic signal. At last, this model is applied to calculate the fractal box-counting dimensions value D of blasting seismic signals, which are collected in the deep-hole blasting experiment carried out on a rock ground. The results in this paper show that the effects of explosive charge and the measurement distance on the parameter b are obvious. The relationship of this likes the effect of field damping parameters on the peak intensity of blasting seismic wave. It acquires the formula of parameter b and peak value of blasting vibration A. It is shown the method of fractal box-counting provides a new effective tool for studying blast seismic effect.
blasting seismic signal fractal box-counting dimension domain frequency field medium vibration intensity
YAN Junwei LONG Yuan HE Wuyi TANG Xianshu
Engineering Institute of Engineering Corps, University of Science & Technology of PLA, Nanjing Jiangsu, China
国际会议
The Asian-Pacific Symposium on Blasting Techniques(亚洲太平洋地区爆破技术研讨会)
昆明
英文
72-75
2007-05-08（万方平台首次上网日期，不代表论文的发表时间）