水下爆破振动及冲击波传播规律数值模拟分析  

Numerical simulation analysis of underwater blasting vibration and shock wave propagation law

作　　者：石晨晨 程贵海[3] 陈宏涛 李郎 周泰安 周勇 SHI Chenchen;CHENG Guihai;CHEN Hongtao;LI Lang;ZHOU Taian;ZHOU Yong(Chengdu New Technology Blasting Engineering Co.,Ltd.of China Railway No.2 group,Chengdu Sichuan 610000,China;不详)

机构地区：[1]中铁二局集团成都新技术爆破工程有限公司,四川成都610000 [2]中国中铁爆破安全技术研发中心,四川成都610000 [3]广西大学,广西南宁530004

出　　处：《工业安全与环保》2023年第11期64-68,共5页Industrial Safety and Environmental Protection

基　　金：中国中铁爆破安全技术研发中心资质项目(20210810-02)。

摘　　要：为了分析研究介质水深度的变化对水下爆破振动波和爆炸冲击波传播衰减规律的影响,采用LS-DYNA软件对不同水深条件下的水下爆破炸礁过程进行了数值模拟分析,通过在数值分析模型中的不同节点位置设置的监测点,得出了在不同水深条件下的爆破振动及冲击波检测数据,结合非线性回归分析方法,得出了可以表征水下爆破振动速度及冲击波强度传播衰减规律的数学模型。经现场测试数据验证,爆破振动速度预测模型的精度为91.75%,冲击波强度的预测精度为87.94%,为水下爆破有害效应的控制提供了依据。In order to analyze and study the influence of the change of medium water depth on the propagation and attenuation law of underwater blasting vibration wave and explosion shock wave,the process of underwater blasting reef blasting under different water depths is numerically simulated and analyzed by LS-DYNA software.In this paper,through the monitoring points set at different nodes in the numerical analysis model,the detection data of blasting vi-bration and shock wave under different water depths are obtained.Combined with the nonlinear regression analysis method,a mathematical model which can characterize the propagation and attenuation law of vibration velocity and shock wave intensity of underwater blasting is obtained.It adopts the nonlinear regression analysis method,and obta-ins the mathematical model that can characterize the propagation and attenuation law of underwater blasting vibration velocity and shock wave strength through the monitoring data.This method has been validated by field test data.The accuracy of the prediction model of blasting vibration velocity is 91.75%,and the prediction accuracy of shock wave strength is 87.94%,which can provide a basis for the control of harmful effects of underwater blasting.

关 键 词：水下爆破 爆破振动 冲击波 数值分析 

分 类 号：U655[交通运输工程—港口、海岸及近海工程] U615[交通运输工程—船舶与海洋工程]