利用降雨量资料计算德庆县河涝坪水库灌区水量平衡的方法研究

由于广东省目前水文站及降雨量测站分布及数据记录序列不够等问题,很多中小型灌区缺乏径流和降雨量资料。当径流和降雨量无资料或资料不具有可靠性、一致性和代表性时,在灌溉可供水量计算上可采用广东水文图集的降雨、径流资料进行分析计算。多水源灌溉的灌区水量平衡计算中,要根据水源点分片区进行P=90%枯水年水量平衡计算。

Water Balance Calculation of Helaoping Reservoir Irrigation District in Deqing County Based on Precipitation Data

Because of the uneven distribution of hydrological station and rainfall station and lack of sequence data record in Guangdong Province, a lot of small and medium-sized irrigation areas are lack of runoff and rainfall data. When the runoff and rainfall data are not reliable, consistent or representative, the irrigation water supply can be calculated and analyzed by using the rainfall and runoff data of the Guangdong hydrographic atlas. In the calculation of water balance of irrigated area with multiple water sources, the calculation of water balance of P = 90% dry year should be carried out according to the water source patch area.