费鸿禄,孙晓宇,关福晨,刘雨

• 1:辽宁工程技术大学爆破技术研究院

摘要(Abstract)：

由于传统振动速度预测公式未考虑水体对爆破振动传播的影响,为了提高水下爆破质点振速的预测精度,基于量纲分析理论,考虑爆破振动速度监测点与爆源之间的地形(高程差和水平距离)影响因素,同时引入海水深度影响因子,构建水下深埋岩石爆破质点峰值振动速度公式。采用多元非线性回归分析方法,结合厦门海底隧道爆破现场试验实测数据进行质点峰值振动速度预测并分别与萨氏公式及一个萨氏修正公式的预测结果进行了对比分析。研究结果表明:水下爆破质点峰值振动速度预测平均相对误差分别为20.20%、6.98%、7.50%;当水深变化不明显时,量纲理论推导出的振速公式与高程振速公式对质点峰值振动速度预测精度基本一致。基于量纲理论推导的公式预测施工过程中保护对象的安全距离及爆破药量,可以指导海底爆破安全施工。

关键词(KeyWords)： 水下钻孔爆破;质点峰值振动速度;量纲分析;衰减规律;安全距离

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 费鸿禄,孙晓宇,关福晨,刘雨

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