Monitoring and analysis of vibration effects due to underwater explosive ramming

LI Jun-ru; LI Hai-bo; GAO Jian-guang; ZHOU Qing-chun; LIU Ya-qun

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Monitoring and analysis of vibration effects due to underwater explosive ramming

更新时间：2026-06-25

- Monitoring and analysis of vibration effects due to underwater explosive ramming
- Vol. 26, Issue 9, (2005)
- 作者机构：
  
  中国科学院武汉岩土力学研究所,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV542+.5
- Online First：30 December 2013，
  
  Published：2005
- 稿件说明：
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LI Jun-ru, LI Hai-bo, GAO Jian-guang, et al. Monitoring and analysis of vibration effects due to underwater explosive ramming[J]. 2005, 26(9).
DOI：

LI Jun-ru, LI Hai-bo, GAO Jian-guang, et al. Monitoring and analysis of vibration effects due to underwater explosive ramming[J]. 2005, 26(9). DOI：

摘要

根据对广西钦州港二期码头爆夯监测，分析了爆夯产生的振动速度和冲击波超压变化规律。结果表明，实测质点振动速度衰减规律与规范提供的经验公式基本相同；由于自由面反射的稀疏波作用，实测冲击波超压值远小于经验公式提供的结果；分析结果还表明，由于冲击波的脉动作用，即使在一次起爆（不分段）情况下，振动速度和冲击波超压波形也会产生多次振动现象，其振动强度越来越小；另外，由于稀疏波作用，在相同的爆炸条件下，测点入水深度越大，其冲击波超压值越高；测点入水深度越小，冲击波超压值越低。该分析结果可为类似工程提供借鉴。

Abstract

Characteristics of the vibration and impact water pressure are analysed based on the in-situ monitoring for the Qinzhou Harbour (second phrase) underwater explosive ramming. It is revealed that monitoring results of the vibration velocity agree well with the empirical formula; while the monitoring value of the impact water pressure is far less than that of empirical formula as the existence of tensile wave. It is also reported that there is pulse phenomenon for the velocity and the impact water pressure

and the intensity intend to decrease. In addition

it is also suggested that the value of the impact water pressure increases with the increasing throw-in water depth because of the tensile wave. The results can be a good reference for the similar engineerings.

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