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Fluvial geomorphology of the Middle Reach of the Huai River

International Journal of Sediment Research 2014年第1期29卷 24-33页

作者： Bang-yi YU Peng WU Jue-yi SUI Xing-ju YANG Jin NI Research Institute of Water Resources Engineering of Anhui Province Environmental Engineering Program University of Northern British Columbia

The Middle Reach of the Huai River（MRHR） flows northeast into the Hongzehu *** entering the Hongzehu Lake,the Huai River has a braided channel which is shallow and wide,and the riverbed has a negative *** on the characteristics of the MRHR,this river reach can be divided into the following sections:a quasi-straight（or mildly curved） section,a bend section,and a braided *** majority of the MRHR is *** this paper,several parameters are used to assess the geomorphology of the *** analyses are performed to establish a relationship between the span length "L" and channel width "B" for different channel *** relationship between the meandering length "S" and bankfull channel width "B" is also *** indicate that the bankfull channel width "B",the bankfull cross sectional area "A" and the average flow depth "H" are mainly dependent on the dominant discharge in the channel.A relationship is derived that describes the dependency of the curvature radius "R" on the dominant discharge "Q",water surface slope "J" and the turning angle;.

关键词： Braided channel dominant discharge Huai River Channel pattern

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MORPHOLOGIC EQUATIONS BASED ON THE PRINCIPLE OF MAXIMUM ENTROPY

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International Journal of Sediment Research 1994年第1期 31-46页

作者： DENG Zhiqiang ZHANG Kaiquan

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关键词： Principle of maximum entropy unit stream power regime channel,morphologic equation morphologic coefficients critical side slope dominant discharge self-adjustment of alluvial channel.

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INFLUENCE OF THE UPSTREAM RESERVOIRS ON THE ADJUSTMENT OF DOWNSTREAM ALLUVIAL CHANNEL

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International Journal of Sediment Research 1993年第3期 1-20页

作者： QIAN Yiying, CHENG Xiuwen, FU Chongjin and SHANG Hongxia Senior engineer (high grade), Institute of Hydraulic Research, Yellow River Conservancy Commission (YRCC) Senior engineer, Inst. of Hydr. Res. YRCC Engineer, Inst. of Hydr. Res. YRCC Assistant, Inst. of Hydr. Res. YRCC

From the systematic analysis of field data of the existing reservoirs on the main stem of the Yellow River it has been found that different modes of operation of the reservoirs have different effects on the regulation of runoff and sediment load, and consequently, on the self-adjustment of the downstream channel. If a reservoir functions as water impoundment or flood detention, the sediment transport capacity will decrease because of the reduction of flood peaks. Espeially when large amount of sediment load are brought into the river by sediment-laden tributaries downstream of the reservoir, the deposition on the downstream channel will be getting serious, the conveyance capacity will decrease and the channel itself will degenerate. Under the operation of storing the clear flow and releasing the muddy the reservior capacity can be maintained for long-term use and the sediment transport capacity of the downstream channel can be increased. In the development of water resources by construction of reservoirs on a sediment-laden river, the influence of the alluvial channel self-adjustment induced by the changes in runoff and sediment load on flood control and environment must be considered.

关键词： Alluvial river self-adjustment dominant discharge sediment- laden river operational mode discharging capacity backwater deposit compatibility of runoff and sediment load.

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