Seismic Response Analysis of the 1976 Dashihe Tailings Dam
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Abstract
More than ten large tailings dams located in Northeast and North China successfully survived the 1975 Haicheng Earthquake (M=7 3) and the 1976 Tangshan Earthquake (M=7 8 & M=7 1) Seismic performances of these tailings dams provide the valued data to understand the seismic stability of the upstream tailings dam and demonstrate the capability and utility of the analysis methods developed for the seismic response and stability of the tailings dam Dashihe tailings dam, a typical upstream dam and about 50km northeast of Tangshan City, was studied using program TARA-3:2-D direct nonlinear dynamic effective stress analysis Analytical results are fairly consistent with the seismic damage after the 1976 Earthquake The results confirm the validation of the analysis method developed by Finn and the capacity of program TARA-3 once more
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