直立坝前滑坡涌浪压力荷载计算模式探讨

Discussion on calculation model of landslide surge pressure load on the front of upright dam

要评判滑坡涌浪对水库大坝安全的影响,就必须分析确定滑坡涌浪作用在大坝上的动水荷载。对于滑坡涌浪对直立坝的作用力,目前水利水电行业相关的研究文献极少。文章在乐昌峡水利枢纽工程滑坡涌浪物理模型试验的基础上,提出了水流不漫坝和漫坝情况下的直立坝前滑坡涌浪压力荷载计算模型,可供水库大坝安全评价参考。

Hydrodynamic loads on a reservoir dam caused by landslide surge are a crucial factor in evaluation of dam safety, but the previous studies of such loads on an upright dam in the existing literature in water conservancy and hydropower fields are quite rare. This paper develops a calculation model of landslide surge pressure acting on the front of an upright dam for the cases of water non-overtopping and overtopping, based on the physical model tests of Lechangxia water conservancy project. The results would are useful for reservoir dam safety evaluation.