Multiple failure modes-based practical calculation model on comprehensive risk for levee structure

Fu, Zhaoqing; Su, Huaizhi; Han, Zhang; Wen, Zhiping

doi:10.1007/s00477-017-1448-2

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…Embankments of alluvial rivers in plain areas are mostly built by raising soil and strengthening on the original natural bank, such as on the Yellow River in China and the Jamuna River in Bangladesh, and most of them are based on natural sedimentary soil. The variability of soil distribution and geotechnical parameters of embankments is relatively large [1], which makes embankments often face risk of collapse under special hydraulic conditions during flood season. A flood disaster caused by a dike breach not only threatens the lives and property of residents along the river, but also seriously affects the stability of the surrounding society and regional economic development [2].…”

Section: Introductionmentioning

confidence: 99%

The Hydraulic and Boundary Characteristics of a Dike Breach Based on Cluster Analysis

Liu

Luo

Qiao

et al. 2023

Water

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It is important to determine the hydraulic boundary eigenvalues of typical embankment breaches before carrying out research on their occurrence mechanisms and assessing their repair technology. However, it is difficult to obtain the hydraulic boundary conditions of the typical levee breaches accurately with minor or incomplete measured data due to the complexity and instability of the levee breach. Based on more than 100 groups of domestic and foreign test data of embankment/earth dam failures, the correlation between the hydraulic boundary eigenvalues of a breach was established based on the cluster analysis approach. Additionally, the missing values were imputed after correlating and fitting. Meanwhile, the hydraulic boundary parameters and the related equations of a generalized typical breach were obtained through the statistical analysis of the probability density of the dimensionless eigenvalues of the breach. The analysis showed that the width of the breach mainly ranges in 20~100 m, while the water head of the breach is 4~12 m, and the velocity of the breach is 2~8 m/s. The distribution probabilities of all them are about 64~71%. The probability density of the width-to-depth ratio and the Froude number of the breach are both subject to normal distribution characteristics. The distribution frequency of the width-to-depth ratio of 3~8 is approximately 55%, and the Froude number of 0.4~0.8 is approximately 60%. These methods and findings might provide valuable support for the statistical research of the boundary and hydraulic characteristics of the breach, and the closure technology of breach.

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Section: Introductionmentioning

confidence: 99%