廊道和库水对三峡围堰爆破拆除效果影响的数值模拟

Numerical simulation for influence of corridor and reservoir water on blasting-demolition effect of the Three-Gorge cofferdam

1.
State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Wuhan 430072, Hubei, China;
2.
The Second Artillery Command College, Wuhan 430012, Hubei, China

摘要: 用动力有限元程序LS-DYNA对长江三峡水利枢纽工程三期碾压混凝土横向围堰爆破拆除进行了数值模拟。计算分析了上游库水和廊道对爆破拆除效果的影响。计算结果表明,上游库水和廊道对爆破拆除缺口的形成和范围有较大影响，在进行爆破实施时应结合爆破试验予以充分考虑。
- 爆炸力学 /
- 爆破拆除 /
- 数值模拟 /
- 碾压混凝土围堰
Abstract: Numerical simulation has been carried out for blasting demolition of rolling compact concrete cofferdam in crosswise direction of which belongs to the third term of the Three-gorge project using dynamic finite element program LS-DYNA. The influence of corridor and reservoir water on blasting-demolition effect has been numerically analysed. The calculated resultes show that corridor and reservoir water influence forming and extent of blasting notch heavily,which must be considered sufficiently during blasting practice.
- mechanics of explosion /
- blasting demolition /
- numerical simulation /
- rolling compact concrete cofferdam