对三门峡水库冲淤及潼关高程的几点看法

根据潼关高程控制及三门峡水库运用方式研究项目组的研究成果和三门峡水库2002年11月至2005年10月改变运用方式的原型试验，对潼美高程提出了几点看法。首先指出三门峡水库在1974—1985年12年内曾经处于淤积平衡，并强调了其相应的来水来沙及坝前水位的条件；后来平衡被破坏，主要是来水来沙变化所致。对近一年来三门峡水库汛期敞泄排沙的试验结果进行了较为深入的分析，指出三门峡水库经过一定流量冲刷后，即令再来大流量也难以冲刷的事实，充分说明了水库冲刷与淤积并不是完全可逆的。这个情况在研究三门峡运用方式时应引起注意。最后提及了数学模型对潼关高程研究的一点看法和对研究结果的一些见解。

Opinions on Scouring and Silting of Sanmenxia Reservoir and Elevation of Tongguan

The paper puts forward opinions on Tongguan elevation according to the control of Tongguan elevation,study achievements made by the project group of research on operational mode of Sanmenxia Reservoir and the prototype testing of changed operational mode of Sanmenxia Reservoir from November 2002 to October 2005.It firstly points out that Sanmenxia Reservoir used to be in the balance of deposition for 12 years from 1974 to 1985,emphasizes the conditions of corresponding coming water and sediment and water level before dam and;later the balance was destructed by changed coming water and sediment.It conducts thorough analysis on testing results of open sluicing of the reservoir during flood season in last three years and points out the fact that after scouring by a certain discharge,the reservoir will be difficult to be scoured even if bigger discharge comes.It fully shows that the reservoir scouring and silting are not totally reversible,which should pay attention to in the study of operational mode of the reservoir.Finally,it mentions some opinions on mathematic model to the study of Tongguan elevation and views on study results.