考虑高程效应的水下爆破振动衰减拟合模型研究

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摘要由于水介质的存在，影响爆破振动衰减的因素大幅增加，同时导致了水下爆破监测的困难。因此，水下爆破工程中，传统的萨道夫斯基公式（TSF）已不完全适用。通过引入高程差因子β，得到修正的萨道夫斯基公式（MSF）。分别建立修正公式的线性与非线性拟合模型，并求解K、α、β三个相关参数。结合万州公路长江大桥防撞带水下爆破工程，用线性与非线性拟合模型分别进行计算，并求解出K、α、β及残差平方和RSS。分析结果表明，非线性模型的拟合精度高于线性模型，而且非线性拟合模型能够更好地研究考虑高程效应的水下爆破振动衰减规律。

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关键词 ：水下爆破, 振动衰减, 高程效应, 拟合模型

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.

Key words： underwater blasting vibration attenuation effect of elevation the fitting model

收稿日期: 2015-01-04 出版日期: 2016-06-25

引用本文:

彭亚雄1,2 吴立1,2 苏莹1,2 李红勇3 李春军3. 考虑高程效应的水下爆破振动衰减拟合模型研究[J]. 振动与冲击, 2016, 35(13): 173-178.
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. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(13): 173-178.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2016/V35/I13/173

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