| 摘要: |
| 从过水堆石围堰护面失稳破坏的工程实践出发，探讨了铅丝笼护面失稳破坏的成因，在模型试验的基础上，分析了影响铅丝笼护面稳定的主要因素及失稳破坏的临界水力条件。并应用水流能量方程和边界层理论，研究了围堰过水时的水流能量转换关系。得到了失稳临界条件的指标和经验判别式。通过模型试验的对比与分析计算，验证了失稳临界条件经验判别式的正确性。 |
| 关键词: 过水堆石围堰 失稳临界条件 铅丝笼护面 模型试验 |
| DOI： |
| 分类号: |
| 基金项目:高速水力学国家重点实验室开放基金项目（106-220147） |
|
| Experimental study on critical instability and failure conditions of wire-caged protective facing of overflow rock fill cofferdam |
|
|
| Abstract: |
| From the engineering practice in instability and failure of protective facing of overflow rock fill cofferdam,this article discussed the causes of formation of instability and failure of wire-caged protective facing and analyzed the primary factors and critical conditions of instability and failure based on model experiments.Applying the energy equation and boundary layer theory,this article also analyzed the relationship of energy transformation of overflow,and obtained the experience index and formula of instability critical conditions.The result has proved the validity of experience formula. |
| Key words: overflow rock fill cofferdam critical instability conditions wire-caged protective facing model test |
