小型水库兴利库容及灌溉面积复核计算方法

Method for Checking the Utilizable Capacity and Irrigation Area of Small Reservoirs

针对已建小型水库的特点,依据现状兴利库容估算水库水量损失,在此基础上复核水库实际需要的兴利库容,从而简化了复核计算方法,并具有较高的精度;其次,提出了复核小型水库设计灌溉面积的插值计算法,即根据两次试算结果,插值得出灌溉面积的精确结果;另外还推导了直接计算小型水库设计灌溉面积的计算公式,在对水库的来水期和供水期有预先了解的情况下,可直接计算出小型水库的设计灌溉面积。

Due to the features of small reservoirs,water loss of reservoirs can be estimated according to the known utilizable capacity,and a simplified method to compute real utilizable capacity of small reservoirs is proposed.In addition,the author proves that utilizable capacity and irrigation areas have linear correlation for the same water supply periods,and proposes an interpolation method to compute irrigation areas,that is,an accurate result of irrigation area can be obtained according to two trial computations.In addition,a formula for computing irrigation area is derived.Under the condition that water supply periods are known,irrigation area can be computed directly by using the formula without the computation of runoff regulation.