Field Investigation of Frazil Jam Evolution: A Case Study

被引：1

作者：

Sui, Jueyi ^{[1
]}

Karney, Bryan W. ^{[1
]}

Sun, Zhaochu ^{[2
]}

Wang, Desheng ^{[3
]}

机构：

[1] Dept. of Civil Engineering, Univ. of Toronto, Toronto,ON,M5S 1A4, Canada

[2] Dept. of Civil Engineering, Hefei Univ. of Technology, China

[3] Carr Research Laboratory, Inc., Natick,MA,01760-3758, United States

来源：

Journal of Hydraulic Engineering | 2002年 / 128卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Froude number - Ice - Water levels;

D O I：

10.1061/(ASCE)0733-9429(2002)128:8.781

中图分类号：

O35 [流体力学];

学科分类号：

080103 ; 080704 ;

摘要：

Using field measurements of frazil jams from 1982 to 1989 in the Hequ Reach of the Yellow River, this paper discusses both the mechanism of evolution of a frazil jam, and the associated variation in water level. The variation in water level depends not only on the thickness of the frazil jam but also on the ice discharge. An empirical power-law relationship between the dimensionless ice thickness and Froude number is established. It has been found that the critical Froude number (under an ice cover condition) describing the transition from an ice jam to a hanging dam (overloaded ice jam) is about 0.075, with a dimensionless ice thickness of about 0.4. Interestingly, the results from the St. Lawrence River show a similar tendency with similar limits. 2002. © ASCE.

引用

页码：781 / 787

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