优化桃汛洪水冲刷降低潼关高程试验效果分析

Analysis on Test Effects of Reducing Tongguan Elevation Through Scouring by Optimized Spring Flood

对优化桃汛洪水冲刷降低潼关高程的试验效果进行了分析,结果表明:在2006—2009年试验期间,塑造了有利于冲刷降低潼关高程的桃汛洪水过程,潼关高程4 a间平均下降0.11 m;2006—2008年数学模型模拟结果表明,3 a结束时桃汛试验方案较不试验方案的潼关高程偏低0.19 m;桃汛试验不仅直接降低了潼关高程,也改善了三门峡库区淤积分布,有利于年内的冲淤平衡,对控制汛末潼关高程产生了重要作用。

The paper analyzes the test effects of reducing Tongguan elevation through scouring by optimized spring flood.The outcomes show that a) during the test period of 2006-2009,it creates the process of spring flood which is favorable to the scour and reduction of Tongguan elevation and the average reduction of Tongguan elevation in 4 years is 0.11 m;b) the results of mathematical model simulation in 2006-2008 show that Tongguan elevation is 0.19 m lower than that of without test after 3-year test and;c) the spring flood test has not only reduced Tongguan elevation,but also improved sedimentation distribution of Sanmenxia Reservoir area,being favorable to the equilibrium of scour and fill within a year and playing an important role on controlling Tongguan elevation at the end of flood season.