黄河调水调沙对花园口水文站测验河段的影响分析

Influence analysis of water and sediment regulation to testing river reach of Huayuankou hydrologic station in Yellow River

黄河调水调沙的目的是在水库实时调度中形成合理的水沙过程,有利于下游河道减淤甚至全线冲刷。本文通过原形观测分析,检验调水调沙调空指标的合理性,从上游来水来沙情况、调水调沙期间水位～流量关系、同流量级水位变化、河床冲淤变化等方面进行论述,分析了调水调沙对花园口水文站测验河段的影响。

The purpose of water and sediment regulation in Yellow River is to form the rational flow and sediment process during the reservoir real-time scheduling,which is beneficial to sedimentation reduction,even whole line erosion for the downstream river.Based on the prototype observation and analysis,the paper verifies the index rationality of water and sediment regulation and empty regulation and analyzes the influence of water and sediment regulation to testing river reach of Huayuankou hydrologic station from the following aspects,the condition of upland runoff and sediment,the relation of water level and flow during the water and sediment regulation,water level change with same flow grade,river erosion and deposition change,and so on.