Numerical Simulation of Ice Fractures Process of the Yellow River Based on Disk Specimen

To study the influence of the changes in crystals on a micro scale as well as their effect on the macro mechanical properties of river ice and to mitigate the limitation of the objective conditions in a physical examination of river ice, it is necessary to analyze the fracture process of river ice using a micro numerical calculation method. Thus, a numerical model was established to simulate the cracking process of river ice based on disk specimen. Upon comparison with the physical experiment, the results of the numerical model show agreement with the fracture toughness and cracking process. Based on the numerical model, the obtained material parameters of Yellow River ice laid a foundation for the study of the cracking process of river ice on a macro-, meso-, and multiscale.

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Observations of riverbed scour under a developing hanging ice dam

Canadian Journal of Civil Engineering ◽

10.1139/l05-094 ◽

2006 ◽

Vol 33 (2) ◽

pp. 214-218 ◽

Cited By ~ 12

Author(s):

Jueyi Sui ◽

Faye E Hicks ◽

Brian Menounos

Keyword(s):

Yellow River ◽

River Channel ◽

River Ice ◽

The Yellow River ◽

Channel Geometry ◽

Ice Accumulation ◽

Field Investigations ◽

Gauging Station

This paper illustrates the importance of river ice accumulations in changing river channel geometry based on field investigations carried out at the Hequ gauging station on the Yellow River in China. A relationship is established between riverbed deformation and ice accumulation.Key words: river ice, hanging dam, ice accumulation, river scour, Yellow River.

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The Microstructure of Yellow River Ice in the Freezing Period

Crystals ◽

10.3390/cryst9090484 ◽

2019 ◽

Vol 9 (9) ◽

pp. 484

Author(s):

Yu Deng ◽

Zongkun Li ◽

Juan Wang ◽

Lukai Xu

Keyword(s):

Yellow River ◽

Calculation Model ◽

Theoretical Research ◽

River Ice ◽

The Yellow River ◽

Test Results ◽

Ice Crystal ◽

Ice Surface ◽

Ice Disaster ◽

Ice Crystal Size

Accurately determining true ice microstructure and material parameters is a basis for ice disaster theoretical research on the Yellow River. In this work, natural Yellow River ice was collected, and ice crystals parallel and perpendicular to the ice surface were photographed using an orthogonal polarizing mirror. Morphologies of ice microstructure were extracted, and equivalent ice grain sizes were calculated. The results show that Yellow River ice mainly consists of granular ice and columnar ice and vary greatly in different time and space ranges. The ice crystal shape is irregular, and the ice crystal size is larger span, and mainly between 1 mm and 10 mm. Ice crystal initial defects come from bubbles, sediment particles, impurities, and microcracks; among them, bubbles are the most common and have a relatively large impact. In addition, a calculation model of the Yellow River ice microstructure was constructed according to the ice crystal test results. Based on the experimental data and numerical model, the obtained Yellow River ice parameters provide help for analyzing ice disaster mechanisms along the Yellow River.

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Challenges in modeling ice floods on the Ningxia-Inner Mongolia reach of the Yellow River, China

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-10-12293-2013 ◽

2013 ◽

Vol 10 (10) ◽

pp. 12293-12329 ◽

Cited By ~ 2

Author(s):

C. Fu ◽

I. Popescu ◽

C. Wang ◽

A. E. Mynett ◽

F. Zhang

Keyword(s):

Inner Mongolia ◽

River Flow ◽

Yellow River ◽

Flow Direction ◽

Geographical Location ◽

River Ice ◽

The Yellow River ◽

Unsteady State ◽

Property Losses ◽

Cover Thickness

Abstract. During winter the Yellow River in China is frequently subjected to ice flood disasters. Possible dike-breaking due to ice floods poses a serious threat to the part of the region located along the river, in particular the Ning-Meng reach (including Ningxia Hui and the Inner Mongolia Autonomous Region). Due to its special geographical location and river flow direction, the ice dams and jams lead to dike-breaking and overtopping on the embankment, which has resulted in huge casualties and property losses throughout history. Therefore, there is a growing need to develop capability in forecasting and analysing river ice floods. Research into ice floods along the river is taking place at the Yellow River Conservancy Commission (YRCC). A numerical model is one of the essential parts of the current research going on at the YRCC, which can be used to supplement the inadequacies in the field and lab studies which are being carried out to help understand the physical processes of river ice on the Yellow River. Based on the available data about the Ning-Meng reach of the Yellow River, the YRCC River Ice Dynamic Model (YRIDM) has been tested for capabilities to conduct ice flood forecasting. The YRIDM can be applied to simulate water level, discharge, water temperature, and ice cover thickness under unsteady-state conditions. Different scenarios were designed to explore the model uncertainty for two bounds (5% and 95%) and probability distribution. The YRIDM is an unsteady-state flow model that can show the basic regular pattern of ice floods; hence it can be used as an important tool to support decision-making. The recommendation is that data and research should be continued in order to support the model and to measure improvements.

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Challenges in modelling river flow and ice regime on the Ningxia–Inner Mongolia reach of the Yellow River, China

Hydrology and Earth System Sciences ◽

10.5194/hess-18-1225-2014 ◽

2014 ◽

Vol 18 (3) ◽

pp. 1225-1237 ◽

Cited By ~ 13

Author(s):

C. Fu ◽

I. Popescu ◽

C. Wang ◽

A. E. Mynett ◽

F. Zhang

Keyword(s):

Inner Mongolia ◽

River Flow ◽

Yellow River ◽

Flow Direction ◽

Geographical Location ◽

River Ice ◽

The Yellow River ◽

Unsteady State ◽

Property Losses ◽

Cover Thickness

Abstract. During winter the Yellow River in China is frequently subjected to ice flood disasters. Possible dike breaking due to ice floods poses a serious threat to the part of the region located along the river, in particular the Ning–Meng reach (including Ningxia Hui and the Inner Mongolia autonomous regions). Due to its special geographical location and river flow direction, the ice dams and jams lead to dike breaking and overtopping on the embankment, which has resulted in huge casualties and property losses throughout history. Therefore, there is a growing need to develop capability in forecasting and analysing river ice floods. Research into ice floods along the river is taking place at the Yellow River Conservancy Commission (YRCC). A numerical model is one of the essential parts of the current research going on at the YRCC, which can be used to supplement the inadequacies in the field and lab studies which are being carried out to help understand the physical processes of river ice on the Yellow River. Based on the available data about the Ning–Meng reach of the Yellow River, the YRCC river ice dynamic model (YRIDM) has been tested for capabilities to conduct ice flood forecasting. The YRIDM can be applied to simulate water level, discharge, water temperature, and ice cover thickness under unsteady-state conditions. Different scenarios were designed to explore the model uncertainty for two bounds (5 and 95%) and probability distribution. The YRIDM is an unsteady-state flow model that can show the basic regular pattern of ice floods; hence it can be used as an important tool to support decision making. The recommendation is that data and research should be continued in order to support the model and to measure improvements.

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