Study on the fitting model of underwater blasting vibration attenuation considering the effect of elevation

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (13) : 173-178.

PENG Ya-xionga,b, WU Lia,b, SU Yinga,b, LI Hong-yongc, LI Chun-junc

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Abstract

Due to the presence of water medium, the vibration attenuation of underwater blasting is greatly affected by the effect of water, which results in the practical difficulties during monitoring. Therefore, the traditional Sadove formula (TSF) is no longer quite suitable for the underwater blasting engineering. With the introduction of β to show height deviation, we can get the modified Sadove formula (MSF). Then, the article builds the linear and nonlinear fitting model of MSF and solves the relevant parameters of K, α, β. Finally, combining with the underwater blasting engineering of the collision control region of the bridge over the Yangtze river in Wan Zhou, it calculates the results separately with the linear and nonlinear fitting model of MSF and solves out the three parameters as well as the sum of the squared residuals RSS. The analysis results show that the nonlinear regression method is more accurate than the linear one, thus the nonlinear regression method can better study the vibration attenuation law of underwater blasting under the consideration of the effect of elevation.

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underwater blasting / vibration attenuation / effect of elevation / the fitting model

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PENG Ya-xionga,b, WU Lia,b, SU Yinga,b, LI Hong-yongc, LI Chun-junc. Study on the fitting model of underwater blasting vibration attenuation considering the effect of elevation[J]. Journal of Vibration and Shock, 2016, 35(13): 173-178

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