Abstract
This paper uses the equivalent linear model of Hardin-Drnevich and the dynamic effective stress analysis method, gets the safety coefficient of stability, the liquefaction zone distribution and seismic residual deformation of diversion dike under the seismic action of SL1 and SL2. The paper also uses the minimum safety coefficient and average minimum safety coefficient of the whole process of earthquake to evaluate the stability of diversion dike under different seismic action and compares the results. Compared with SL2, the diversion dike foundation liquefaction range is smaller than under the SL1 seismic action, so it is does not affect the normal use of diversion dike structure. When meet the seismic action of SL2 which is appears about one time in a ten thousand, diversion dike will produce bigger deformation, but the integral slip to the heart of canal will not happen, so the use of water of the nuclear power plant is safe. The result has a certain reference value and guiding significance for the similar engineering design.
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