<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Growing occurrence of extreme floods in the Czech Republic has attracted attention to the security of protective earthfill embankments along the rivers. A suddenly increased amount of water on the waterside slope of the embankment may have destroying or even catastrophic consequences. Predictions of seepage patterns through the earth body are usually done considering the saturated flow beneath the free water level only, neglecting the saturated-unsaturated character of the soil water dynamics within earthfill dams.The importance of water dynamics within an earth dam is known and may be addressed using numerical simulation models. In this study the solution based on transient simulation of seepage through protection levee using saturated-unsaturated theory is presented. Simulations were carried out by a two-dimensional numerical model based on Richards' equation for water flow in porous medium.It has been shown that proposed approach is, with certain limitations, suitable for large scale engineering applications.</abstract>

Growing occurrence of extreme floods in the Czech Republic has attracted attention to the security of protective earthfill embankments along the rivers. A suddenly increased amount of water on the waterside slope of the embankment may have destroying or even catastrophic consequences. Predictions of seepage patterns through the earth body are usually done considering the saturated flow beneath the free water level only, neglecting the saturated-unsaturated character of the soil water dynamics within earthfill dams.The importance of water dynamics within an earth dam is known and may be addressed using numerical simulation models. In this study the solution based on transient simulation of seepage through protection levee using saturated-unsaturated theory is presented. Simulations were carried out by a two-dimensional numerical model based on Richards' equation for water flow in porous medium.It has been shown that proposed approach is, with certain limitations, suitable for large scale engineering applications.

Soil moisture dynamics in levees during flood events - variably saturated approach

Faculty of Civil Engineering, Dept. of Irrigation, Drainage and Landscape Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic

Journal of Hydrology and Hydromechanics

Growing occurrence of extreme floods in the Czech Republic has attracted attention to the security of protective earthfill embankments along the rivers. A...

Soil moisture dynamics in levees during flood events - variably saturated approach

Pubblicato online: 16 giu 2010

Pagine: 64 - 72

DOI: https://doi.org/10.2478/v10098-010-0007-z

Parole chiave
záplavy, protipovodňová hráz, sypaná zemní hráz, nenasycená půda, vadózní zóna, modelování průsaku, vodní režim půd, Richardsova rovnice

This content is open access.

Soil moisture dynamics in levees during flood events - variably saturated approach

Pubblicato online: 16 giu 2010

Pagine: 64 - 72

DOI: https://doi.org/10.2478/v10098-010-0007-z

Parole chiavezáplavy, protipovodňová hráz, sypaná zemní hráz, nenasycená půda, vadózní zóna, modelování průsaku, vodní režim půd, Richardsova rovnice

This content is open access.

Parole chiave
záplavy, protipovodňová hráz, sypaná zemní hráz, nenasycená půda, vadózní zóna, modelování průsaku, vodní režim půd, Richardsova rovnice