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《Blasting》 2005-02
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Analysis on Influential Factors of Vibration Superposition in Middle and Far Field of Millisecond Blasting

ZHEN Yu-cai , ZHU Chuan-yun (School of Water Resources and Hydropower, Wuhan University , Wuhan 430072 , China)  
The earthquake wave from different section of millisecond blasting would be superposed in middle and far field most condition. By analysing the characteristics of the single-section blasting vibration, this paper analyzes the relationship of the vibration superposition and influential factors, and indicates the attenuation of blasting seismic wave propagation in rock mass is the main reason which vibration superposition in middle and far field is generated. The intensity of vibration superposition is affected by the characteristics of explosion source ,millisecond delay interval and distance between explosion source and measuring point.
【CateGory Index】: TB41
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