潼关高程对渭河下游泥沙冲淤影响研究

Study on the impact of Tongguan riverbed elevation to the sediment of the downstream Weihe river

2003年渭河小水酿大灾,又一次使潼关高程问题成为各方研究的热点。本文利用恒定一维不平衡输沙数学模型,对不同潼关高程(326 m、327 m、328 m)在给定水沙系列(时长14年)作用下对渭河下游河道的冲淤影响进行了研究,从定量上得出了潼关高程分别为328 m、327 m时渭河下游14年间各河段的淤积量和冲淤趋势,这对于防洪治理具有重要意义。

Recently, the problems of Tongguan elevation are again concerned because of the catastrophe caused by the small flood on the Weihe river in 2003. In this paper, it is studied the impact of Tongguan riverbed elevation（326 m,327 m,328 m） to the sediment of the downstream Weihe river under the series condition of the given input water and sediment（14 years） by using steady one dimension mathematical model of unbanlanced transporting sediment. It is quantitatively obtained the aggradational volume and fluvial trend of each river section in downstream Weihe river during 14 years when the Tongguan riverbed elevation is 328 m and 327 m respactively. All these results are very important to flood controll.