中小型水库原始地形推算方法研究

Original topography estimation for small and medium-sized reservoirs

我国大多数中小型水库兴建于20世纪50年代到70年代,由于建库时间较早,加上水库运行过程中管理不够规范,造成许多中小型水库原始地形资料丢失。如何根据其他一些信息来推算其原始地形,对水库的运行和管理具有重要意义。本文提出了一种依据原始的水库特征水位和相应库容以及现状情况下的地形资料,推算出水库的原始地形、泥沙淤积量及分布的方法。最后以广东南海东风水库为例介绍了该方法的具体应用。

The majority of small and medium-sized reservoirs in our China were built between the 1950s to the 1970s. Due to their earlier construction, unreasonable operation and management, the original topography of many small and medium-sized reservoirs turn out to be lost. However, it＇s of great significance for the operation and management for the reservoirs to estimate the original topography. This paper proposes a method to solve this problem. The original topography, along with the sedimentation rate and its distribution can be calculated based on the characteristic water level and corresponding reservoir capacity, and the current topography of the reser- voir. This method is illustrated in the analysis of Dongfeng reservoir in Nanhai, Guangdong Province.