论文部分内容阅读
河道洪水演算一般用流量演算法,但不能用于预报。而相应洪峰水位法只适用于预报洪峰水位,很难预报水位过程。本文根据河相关系涨差比落差的原理,提出三种预报水位过程的方法。(1) 据实测记录绘制下游站涨差与落差的关系曲线,用于预报。(2)相应涨差法:以上游站的涨差与下游站后一:时段的相应涨差建立关系,用于预报。(3)加权水位法:建立加权水位关系。以时段初的上、下断面水位预报时段末的下断面水位。
River flood calculation generally use flow algorithm, but can not be used for forecasting. The corresponding peak water level method is only suitable for forecast flood level, it is difficult to predict the water level process. In this paper, we propose three methods of forecasting water level process based on the principle of fluctuation ratio of river facies. (1) According to the actual record draw the downstream station gap and drop curve, used for forecasting. (2) the corresponding rise method: the rise of the upstream station and the downstream station after a: period of the corresponding rise to establish a relationship for the forecast. (3) weighted water level method: the establishment of the relationship between the weighted water level. The water level of the lower section at the end of the forecast period of the upper and lower section water levels at the beginning of the period.