Hyper-concentrated Flows In Tributaries
Of The Middle Yellow River
Author(s)
H. Hashimoto, H. Takaoka & S. Ikematsu
Abstract
The purpose of the present study is to examine resistance rule and sediment
transport characteristics of hyper-concentrated flows in tributaries of the middle
Yellow River. The Kuye, Dali, Tuwei and Jialu Rivers are selected as the study
area. Laboratory experiments of hyper-concentrated flows are made in an open
channel, using silt and sand as flowing material. Field data of flow and sediment
discharge of the rivers are obtained. The sediment-water mixture flow model
proposed by Hashimoto and Hirano is found to be valid for the hyper-concentrated
flows in the Kuye River and laboratory experiments with fine sand.
Keywords: Yellow River, hyper-concentrated flow, flow resistance, sediment
transport.
1 Introduction
The Yellow River basin has serious problems of flood and irrigation due to
hyper-concentrated flows from the tributaries of the middle river reach (Wan and
Wang [5]). In order to solve these problems, it is important to estimate flow
resistance and sediment transport in the hyper-concentrated flows. There are
some works on these subjects (e.g. Wan and Wang [5] and Mantz [6]). However,
the less model can explain satisfactorily flow resistance and sediment transport.
The purpose of the present study is to find a flow model for flow resistance and
sediment transport characteristics in the hyper-concentrated flows. The Kuye,
Dali, Tuwei and Jialu River are selected as the study area (Fig. 1). We visited the
Kuye and Dali River in 2002. First we investigate characteristics of bed
sediments in these rivers. Second, we make laboratory experiments of hyper-concentrated
flows in an open channel, using silt and sand as flowing material.
Keywords
Yellow River, hyper-concentrated flow, flow resistance, sediment
transport.
Related Book
Other papers in this volume
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