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Study on Bedload Transport and Estimation of Downstream Channels and Its Tributaries of Jinshajiang River

Author: HuiXiaoXiao
Tutor: DongYaoHua
School: Yangtze River Scientific Research
Course: Hydraulics and River Dynamics
Keywords: Bed load transport properties To bedload sediment load estimates Flume tests Jinsha River downstream dry tributaries
CLC: TV14
Type: Master's thesis
Year: 2010
Downloads: 48
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Abstract


Bed load transport characteristics, has always been in river sediment research in the field is a very important fundamental research topics, and the Jinsha River downstream river is the main source area of ??the Yangtze River sediment This paper dry tributary of the Jinsha River downstream goes Load Transport and estimation methods. On the basis of the analysis of the Bed Load and estimation methods, as well as the lower Jinsha River dry tributary watershed characteristics, bedload sediment transport flume experiments and the passage of the transport rate formula calculation for Lower Jinsha River dry tributaries goes on qualitative sediment load estimation method and its tributaries and the main stream bed load transport were estimated. Main contents are: (1) General Section (1) of the load sediment starting reviewed the basic characteristics of the transport mechanism and impact factor. ② estimates of the amount of bed load transport all kinds of methods: on-site observations and test method, the formula method, analysis, detailed descriptions and comprehensive evaluation. ③ analysis of the dry tributaries of the Jinsha River downstream watershed overview flow and sediment movement. (2) The typical tributary bedload sediment load estimates ① flume tests. To select representative Jinsha River downstream the three tributary of (Longchuan the river, Kraal River, a small river), the use of the sink balance sediment test, bedload transport simulation; detailed analysis of the the flume test process and results. Flume test results, based on three typical tributaries to control the flow and sediment data of hydrological stations, and analysis of a typical tributary years calculated the average amount of bed load transport. ② formula. Choose to create different theory on the basis of, and in engineering practice widely application of a number of bed load transport formulas to calculate the average annual bedload sediment load for three typical tributaries. Formula results and sink test results, it is recommended that the Jinsha River downstream Yangtze River Academy of sediment curve of bed load transport rate. ③ tributary bedload sediment load. Control hydrological station hydraulic sediment data based on other tributaries of the Jinsha River downstream Yangtze River Academy of sediment curve analysis calculation of the other tributaries average annual bedload sediment. (3) trunk stream the bedload sediment load estimates preliminary study on the basis of the tributaries of bed load sediment transport study quality sediment load estimation methods River basin characteristics and bed load transport characteristics of the main stream goes on the summarized classification; accumulation method along with related analysis than the relevant law and traffic law, pushed hanging estimated bedload sediment load of the main stream.

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CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Sediment dynamics, River Dynamics
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