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Hyperconcentrated Flow



ISBN 9789054101666
Published January 31, 1994 by CRC Press
300 Pages

 
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Book Description

Considers hyperconcentrated flow, a phenomenon peculiar to the Yellow River Basin. The feasibility of using the potential for sediment carrying by hyperconcentrated flow can also be applied to topics such as hypertransport, debris flow and sediment releases from reservoirs.

Table of Contents

PREFACE -- 1 HYPERCONCENTRATED FLOW IN NATURE AND IN PRACTICAL APPLICATION -- 1.1 Hyperconcentrated flow in the main stem and tributaries of the Yellow River -- 1.2 Hyperconcentrated flow in reservoirs -- 1.3 Hyperconcentrated density current in rivers -- 1.4 Hyperconcentrated turbidity current -- 1.5 Hyperconcentrated flow in canals (Wan & Xu, 1984) -- 1.6 Debris flow -- 1.7 Hydrotransport and densecoal hydrotransport -- 1.8 Summary conclusion -- References -- 2 BASIC PATTERNS OF MOTION OF HYPERCONCENTRATED FLOW -- 2.1 Different forms of grain movement -- 2.2 Patterns of motion of hyperconcentrated flow -- References -- 3 THE ORIGIN AND FORMATION OF HYPERCONCENTRATED FLOW IN THE Y ELLOW RIVER BASIN -- 3.1 The geomorphic, geological, and hydrological features of the loess plateau region of the Yellow River basin -- 3.2 The distribution of the modulus of sediment yield in the loess plateau -- 3.3 The variation of loess size and maximum concentration -- 3.4 Limiting concentration of hyperconcentrated flow at different localities in the basin -- 3.5 Discharge-sediment transport capacity relationship for gullies of different orders -- 3.6 Size composition features of the suspended sediment -- References -- 4 RHEOLOGICAL PROPERTIES OF HYPERCONCENTRATED FLOW -- 4.1 Rheogram -- 4.2 Rheological models ofhyperconcentrated flow -- 4.3 Determination of rheological parameters -- 4.4 The influence of turbulence on Bingham yield stress -- References -- 5 FALL VELOCITY OF SEDIMENT PARTICLES IN HYPERCONCENTRATED FLOW -- 5.1 Factors causing reduction of fall velocity -- 5.2 Buoyancy force of a body in solid-liquid mixture -- 5.3 Group fall velocity of uniform cohesionless sediment particles -- 5 .4 Gross fall velocity of non-uniform cohesionless particles -- 5.5 Settling of sediment containing clay particles -- 5.6 Settling of discrete floes and discrete particles -- 5.7 The settling of discrete particles in flocculent suspension -- 5.8 The settling of the flocculent structure as an entirety-The consolidation processes of deposit -- 5.9 Some unusual settling phenomena associated with extremely high concentration of clay particles -- References -- 6 HYPERCONCENTRATED PSEUDO-ONE-PHASE FLOW -- 6.1 Velocity profiles -- 6.2 Resistance -- 6.3 Instability of hyperconcentrated flow -- References -- 7 HYPERCONCENTRATED FLOW WITH COHESIONLESS PARTICLES -- 7 .1 Hyperconcentrated layer -- 7 .2 Two-phase turbulent flow with hyperconcentration of cohesionless sediment -- 7.3 Laminated load motion -- References -- 8 THE EFFECT OF FINE PARTICLES ON COARSE PARTICLE MOVEMENT -- 8.1 Introduction -- 8.2 Bed configuration -- 8.3 Profiles of coarse particle concentration -- 8.4 Velocity profile -- 8.5 Sediment carrying capacity -- 8.6 Flow resistance -- 8.7 Drag reduction -- References -- 9 CHARACTERISTICS OF PLUVIAL PROCESSES ASSOCIATED WITH HYPERCONCENTRATED FLOW -- 9 .1 Large amplitude and high speed of aggradation or degradation -- 9.2 Volumetric change of a hyperconcentrated flood caused by rapid and serious degradation or aggradation -- 9 .3 Change of cross section and modification of channel pattern caused by hyperconcentrated flow -- 9.4 Clogging -- 9.5 'Ripping up the bottom' -- References -- 10 HYPERCONCENTRATED DENSITY CURRENT -- 10.1 General description -- 10.2 The condition of plunging -- 10.3 Resistance of a hyperconcentrated density current -- 10.4 The continuous motion of a hyperconcentrated density current -- 10.5 Hyperconcentrated density current in rivers (Wan & Niu, 1989) -- References -- 11 DEBRIS FLOW -- 11.1 The category of debris flow -- 11.2 Distribution of debris flow in China -- 11.3 Phenomenological description of debris flow -- 11.4 Mechanism of debris flow -- 11.5 Prediction, prevention and control of debris flow -- References -- 12 THE UTILIZATION OF HYPERCONCENTRATED FLOW -- 12.1 Hyperconcentrated irrigation /warping -- 12.2 Releasing sediment from reservoirs in the form of hyperconcentrated flow -- 12.3 The idea of transporting sediment of the Yellow River into sea by hyperconcentrated flow -- 12.4 Hydrotransport in the form ofhyperconcentrated flow -- 12.5 Other examples of utilization of hyperconcentrated flow -- References -- SUBJECT INDEX.

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Author(s)

Biography

Institute of Water Conservancy and Hydroelectric Power Research, Beijing, People's Republic of China. Institute of Water Conservancy and Hydroelectric Power Research, Beijing, People's Republic of China.