水垫塘底板的试验仿真模拟研究

Study on Experiment Simulation of Slabs in Plunge Pool

以模型试验为手段研究拟建工程水垫塘底板的稳定性问题，其关键在于模型的相似性和模拟方法的可靠性．文中结合某高拱坝水垫塘底板稳定性的研究，从水垫塘水流形态、底板块上举力的成因等方面，阐述了底板块的水动力学和结构动力相似性以及边界条件相似的试验模拟方法，力求模型仿真性强，特别是对模拟板块间缝隙宽度的论证非常有意义．试验结果表明，用加重橡胶进行的试验仿真模拟──水弹性模型，较为真实地反映了水垫塘底板块的动力学特性．

The key question, using the model test as stability studying of slabs of plunge pool for proposed engineering, is similarity of the model and reliability of the simulation method. In the light of study of a plunge pod for a proposed project, the stability of slabs is studied. From the flow characteristics of the plunge pool and the origins of uplift on slabs the methods of flow-structure similarity and experimental analog simulation are set forth in this paper. Tine model teats indicate that the experimental analog simulation by using high apparent density rubber is successful in studying the thrust at Springer and the slab uplift. The hydroelastic model gives a faithful representation of hydrodynamic characteristics of slabs in the plunge pool.