关键词: 溢洪道, 古滑坡, 地质条件, 复活成因, 处理方案

Abstract: This paper, taking the ancient landslide on the left bank of spillway of Naba reservoir as the research object, evaluates the engineering geological conditions of landslide, as well as analyzes the de_ formation characteristics of ancient landslide before reactivation and its reactivation mechanism. The comprehensive treatment scheme of landslide is studied in combination with the actual situation of land_ slide and the experience of similar projects. After comprehensive treatment, the landslide body is effec_ tively remediated and in a stable state, ensuring the safety of the flood discharge through the spillway.

Key words: spillway, ancient landslide, geological condition, reactivation mechanism, treatment scheme