Study on Fluctuating Pressure Transmission in Joint on the Bottom of Plunge Pool

The plunge pool is usually used to dissipate energy under high dam.Large impact force will cause strenuous fluctating pressure in joint of the phunge pool on the condition of the waterstops damaged.Research shows that fluctuating pressure is one of the primary reasons leading to instability of slab.In this paper,using model of transient flow,condition and characteristics of produced fluctuating pressure in joint were studied.These results are a good help for analyzing the mechanism of fluctuating uplift and instability of concrete slab.