三门峡水库于 196 0年建成并投入运用。四十年来 ,水库经历了蓄水拦沙、滞洪排沙和“蓄清排浑”三个不同方式的运用阶段 ,库区发生了深刻的变化。本文着重分析三门峡水库的运用及潼关高程的变化 ,库区的冲淤变化及其对陕西库区带来的影响 ,并针对库区存在的问题 ,提出了库区治理的对策。 Sanmenxia Reservoir was built and put into operation in 196 0. Over the past 40 years, the reservoir has undergone three phases of operation of water storage and silt detention, flood detention and sediment discharge, and “clearing and discharging muddy”. The reservoir area has undergone profound changes. This article analyzes the Sanmenxia Reservoir and the use of Tongguan elevation changes, changes in the reservoir area scouring and siltation and its impact on the reservoir area in Shaanxi, and for the existing problems in the reservoir area, put forward the reservoir area management measures.