摘要
无资料地区径流预测(PUB)是水文预报领域的重要分支,也是无资料地区设计洪水计算的重要依托。辽宁省横跨3个气候区,兼具多种产汇流机制。针对此,分别采用辽宁饱和模型、辽宁非饱和模型、降水径流相关模型、三水转化模型计算产流,综合单位线法计算汇流。采用地区综合法将模型参数由有资料地区外延至无资料地区。将辽宁省划分为下垫面相似的18个水文分区,各分区共用一组参数,并选取资料系列完整、可靠的45个代表站1980—2016年降水-径流资料进行率定。结果可为辽宁省无资料地区径流预报、设计洪水计算提供依据,也可为其他地区相关研究提供参考。
Predictions in Ungauged Basins( PUB) is an important branch of hydrological forecasting and a basis for the design of flood calculation. Liaoning province spans three climate zones and has a variety of runoff and confluence mechanisms. In view of this,runoff producing models( such as Liaoning saturation model, Liaoning unsaturated model, rainfall-runoff correlation model and three-water conversion model) were used to compute runoff, and integrated empirical unit hydrograph model was used to compute confluence. The model parameters were extended from the gauged basin to the ungauged basin by regional synthetic method. According to the characteristics of Liaoning Province, 18 hydrological divisions had been divided in this paper and each division shared a set of parameters. Runoff and confluence parameters of different divisions were preferred based on precipitation-runoff data of 45 stations during 1980-2016. The results could provide support for runoff forecast and design flood calculation of ungauged basins in Liaoning Province, and also for others region.
出处
《人民珠江》
2018年第2期14-18,共5页
Pearl River
关键词
无资料地区径流预报
计算方法
辽宁省
Predictions in Ungauged Basins(PUB)
computing method
Liaoning Province
