Non linear numerical modeling of slopes stability under seismic loading – reinforcement effect

The stability of slopes depends on its initial state condition before the earthquake. When the slope is close to static failure, a small seismic shock is enough to trigger movement. The Ledu earthquake (China, 1984) having a magnitude of 2.9 was enough to trigger a sliding because of the small depth if its source (Feng & Guo, 1985). There are several real cases of slope landslides recorded during real earthquakes.