Dynamic Response Analysis of Stop Log Gates in Power Station’s Running Process

In this paper, a 3-D finite element model was established for stop log gates. It is used for researching its force situation in process of power on and power off. The vertical pressure distribution around stop log gates shows that with water depth increasing, the difference of downstream pressure and upstream pressure of gates become more obvious. Between power on and power off processes, the stop log gates’ pressure differences and horizontal displacements are opposite.