三门峡水库控制运用原型试验成效分析

Analysis of control and operation prototype test for Sanmenxia reservoir

利用实测的水文、泥沙、河道淤积分布、水库运用等资料,分析了控制运用原型试验期间黄河三门峡水库在不同来水来沙情况下的冲淤变化特性、回水影响范围以及潼关高程的冲淤变化规律等。结果表明:在库水位不超过318 m运用下,潼关河段基本处于自然河道状态,其冲淤变化主要取决于来水来沙条件;在汛期运用中,采用空库迎洪、洪水期敞泄排沙等措施,加大了洪水溯源冲刷的力度和范围。

Based on the observed data of hydrology,sediment,sedimentation distribution and reservoir operation, the paper analyzes the erosion—deposition variation characteristics and backwater influence scope and erosion—deposition variation law of Tongguan elevation under the different condition of flow and sediment for Sanmenxia reservoir during the control and operation prototype test.The results show that the erosion—deposition variation mainly depends on the flow and sediment when the reservoir water level is not more than 318m and the Tongguan river section is in the natural river course and the several measures could enhance the energy and range of flood headward erosion such as emptying the reservoir for flood and opening gate for sediment in flood period.