塔里木河干流上游洪水演进规律分析与数值模拟

doi:10.12118/j.issn.1000-6060.2018.06.01

Abstract

Abstract: The hydrological characteristics of Tarim River Basin,Xinjiang,China have undergone profound changes in the past decades.The annual runoff of the origin increased while the frequency and the peak discharge of magnitude floods in the main stream increased significantly,which lead to the increase of flood protection pressure.In 2001,the Tarim River ecological rescue project was implemented,and the recent governance project of the Tarim River main stream was carried out after 2002.After the boundary conditions and water and sediment conditions changed significantly,there is still a lack of quantitative analysis and research on the flood travel time and peak-clipping rate of the mainstream Tarim River.This paper systematically analyzed flood characteristics in the upper reach of the mainstream of the Tarim River (Xiaojiake-Yingbazha reach) from three aspects:Flood travel time,peak-clipping rate and water consumption rate,which revealed the general law of flood transmission in the upper reaches of the main stream.The travel time of peak flood is concentrated in 1.5-5 d from Aral to Xinqiman,and the average peak-clipping rate is 24%.The travel time of peak flood is concentrated in 2-10 d from Xinqiman to Yingbazha,and the average peak-clipping rate is 50%.The water consumption rates are 36%-56% at Aral-Xinqiman reach and Xinqiman-Yingbazha reach in June and July.In August and September,the water consumption rates of the two reaches are gathered in 23%-28%.A one-dimensional mathematical model of water and sediment evolution is constructed.After the verification period using flood events in 2010,the model simulated the main stream flood evolution process in 2017 and the simulation results with high accuracy was obtained when the flow peak of Aral exceeds 800 m³·s^-1,which indicated the rationality and wide application prospect of the model.The results of this study have scientifically revealed the flood characteristics of the representative inland sandy rivers in Central Asia,and have important significance for flood-control management and flood-water resources utilization of the Tarim River.

Key words: flood routing, water and sediment evolution, numerical model, main stream of Tarim River

CLC Number:

P333

WANG Yuan-jian, DONG Qi-hua, ZHOU Hai-ying. Analysis and numerical simulation of flood routing of upper reaches of the mainstream of Tarim River[J].干旱区地理, 2018, 41(6): 1143-1150.

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Analysis and numerical simulation of flood routing of upper reaches of the mainstream of Tarim River

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