安全评价, 拱坝, 滑坡涌浪, 有限元

In order to study the influence of the surge caused by reservoir bank landslide on arch dams, overall and local stability analysis of the deformation body near a hydropower dam was carried out, calculation of the surge caused by reservoir landslide and sensitivity analysis of its impact on the safety of dam structure were conservatively accomplished. The results show that: (1) the generation of the deformation body which is in an overall stable position is not correlated with reservoir storage; (2) the heights of surges reaching the dam at normal water level and limit water level are 0.61 m and 0.56 m respectively under the extreme conditions; (3) and with the effect of the surge, the stress distribution on arch dam body is normal, meanwhile, the stress value is within the range of design allowable. This study provides the basis for preventing the arch dam from adverse effect of the landslide surge.

safety evaluation, arch dam, landslide surge, finite element