摘要
对三峡三期RCC围堰拆除爆破水下爆破冲击波的测试与防护进行了分析研究,结果表明:炸药绝大部分都用来破碎混凝土,直接作用水体形成气泡的概率减少,所以从测试结果中几乎看不到明显的气泡脉动现象;而水中冲击波较大峰值主要来源于与测线正对着的两个相临堰块,其他与测线夹角较大的堰块产生水击波压力过程不明显,表明水下钻孔爆破从孔口传播的水击波具有很强的方向性。
The measurement and protection of underwater explosion shock waves are analyzed in the project of Three Gorges Project ＂s Ⅲ-phase upstream roll compact concrete cofferdam demolition. The results show that much more explosive is used to break concrete, and the probability of the formation of bubbles is reduced, so there is no phenomenon of bubble pulsation in test results. The peak of shock waves in the water comes mainly from two adjacent cofferdams which are up to the measurement points, but the process of shock waves is not obvious about the other cofferdams with a larger angle between the measurement points, so shock wave travel is highly directional in the water.
出处
《中国农村水利水电》
北大核心
2009年第6期87-89,共3页
China Rural Water and Hydropower
关键词
水下爆破
冲击波
工程防护
underwater blasting
shock wave
project protection
