研究了来水来沙变化对潼关高程的影响和变化规律. 结果发现, 潼关高程的升降取决于库区水流能量的大小, 汛末潼关高程与考虑前期水流和运用条件的线性叠加水流能量之间具有较好的相关关系. 在入库水量变化小、坝前水位变化大时, 水位对库区冲淤和潼关高程变化起主要作用; 相反, 如果坝前水位变化不大, 而来水量变幅较大, 则潼关高程变化和库区的泥沙冲淤主要受入库水沙条件的影响. The results show that the elevation of Tongguan elevation depends on the size of the water flow energy in the reservoir area and the difference between the Tongguan elevation at the end of the flood season and the linear superimposed water flow energy considering the previous water flow and application conditions Had a good correlation.When the change of water inflow was small and the water level in front of the dam changed greatly, the water level played a major role in the scour and silting in the reservoir area and the elevation of Tongguan station. On the contrary, if the water level in front of the dam changed little, Larger, then the Tongguan elevation change and sediment deposition in the reservoir area are mainly affected by the inflow and discharge of sediment.