Study On Hydrodynamic Characteristics Of The Pervious Slabs In Plunge Pool

The safety of protecting structure plunge pool is the key to success or failure of energy dissipation. So the stability of lining structure in the plunge pool is one problem that needs to be solved in practice and also one of the subjects that many researchers have studied for years. Based on the model test, the characteristics of the load acting on the pervious slab in plunge pool are studied in this dissertation. Compared to impervious slab, the load reduces obviously acting on the pervious slab. The main harvests of this dissertation include as follows:(1) Based on the model test, the uplifting on the pervious slabs in plunge pool was studied. The relation between the previous coefficient and the uplifting on the pervious slab is analyzed. And the relations between the diameter of holes, the position of the previous slab in plunge pool, water head and uplifting force on the slab are studied in this dissertation.(2) Depending on the model test, the thrust at springer in plunge pool with inverted-arch type was studied. The relation between the previous coefficient and the thrust at springer is analyzed.(3) This paper studies the dynamic response of inverted-arch pervious slabs through uplift of actual measurement in hydraulic elastic model. The different of the dynamic response between impervious slab and pervious slab is analyzed through the thrust at springer and the displacement of slabs.(4) Depending on the numerical simulation, the curvature of arch ring is investigated in this paper. If the chord of inverted-arch pervious slabs is invariability, the curvature of inverted-arch is analyzed through the thrust at springer and the displacement of slabs and skewback vary with the central angle of arch ring.