南水北调与水利科技Issue(1)：1-6,6.DOI:10.3724/SP.J.1201.2013.01001
西藏稀缺资料地区洪峰流量推求
Estimation of Peak Flow of an Ungauged Basin in Tibetan Plateau
摘要
Abstract
The instantaneous peak flow ( IPF) is the important basis for the hydraulic design, construction, and management, and it also has important significance on the investment and safe operation of hydraulic projects. However, the IPF records in T ibet are general y scarce, w hile the mean daily flow ( MDF) records are relatively abundant. In this study, the IPF records are extended by analyzing the relationship betw een the corresponding IPF and MDF records and then estimating the IPF based on the long2series data of M DF, which can provide data support for the design flood. The results show that ( 1) the function relationship betw een IPF and M DF is stable for most of the hydrological stations in Tibet. The relative error betw een the estimated and observed IPF is less than 10% based on the above relationship, and the frequency analysis results using the extended IPF data series are more reasona2 ble than those using the measured IPF series;and ( 2) for the stations w ith limited data of measured MDF, the HIMS ( H ydro Infor2 matic Modeling System) model is used to extend the available MDF data series, and then the IPF data series are estimated. The HIMS model is applied to simulate the MDF data series in three representative rivers of Tibet:the Nianchu river, Lhasa river, and Niang river. The results show that the model has a good performance in both daily and peak flow simulations. Moreover, the IPF data series in the three representative rivers have been extended from 2000 to 2010 using the extended MDF data series obtained from the simulation results of H IMS and the function relationship betw een IPF and M DF.关键词
西藏/稀缺资料地区/HIMS模型/洪峰流量/日平均流量Key words
Tibet/ungauged basins/HIMS model/instant aneous peak flow/mean daily flow分类
水利科学引用本文复制引用
刘昌明,白鹏,巩同梁,王中根,刘小莽..西藏稀缺资料地区洪峰流量推求[J].南水北调与水利科技,2013,(1):1-6,6.基金项目
国家自然科学基金项目(40971023) （40971023）
西藏自治区山洪灾害防治县级非工程措施建设 （）
