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Reliability-Based Three-Dimensional Assessment of Internal Erosion Potential due to Crevasse Splays
AbstractGeomorphic features in the soil layers underlying a structure often have a significant effect on the underseepage behavior and the potential for initiating internal erosion. Based on the assumption that the preponderance of the underseepage risk to a levee reach is due to the geomorphic features along that reach, methodology has been developed to perform a stochastic assessment of the properties of the seepage regime with the intention of assessing the probability of internal erosion initiation. The methodology consists of a response surface-Monte Carlo analysis that takes into account the uncertainty in the subsurface geometry and soil properties in assessing the seepage regime associated with the feature. Three-dimensional finite-element seepage analyses are used to develop the response surface to take into account the inherent three-dimensional aspects of the feature. As a result of the analysis, probability distribution functions with respect to hydraulic gradient and factor of safety against heave are developed. The methodology can be adapted to any type of geomorphic feature and, as an example, a crevasse splay deposit is presented.
Reliability-Based Three-Dimensional Assessment of Internal Erosion Potential due to Crevasse Splays
AbstractGeomorphic features in the soil layers underlying a structure often have a significant effect on the underseepage behavior and the potential for initiating internal erosion. Based on the assumption that the preponderance of the underseepage risk to a levee reach is due to the geomorphic features along that reach, methodology has been developed to perform a stochastic assessment of the properties of the seepage regime with the intention of assessing the probability of internal erosion initiation. The methodology consists of a response surface-Monte Carlo analysis that takes into account the uncertainty in the subsurface geometry and soil properties in assessing the seepage regime associated with the feature. Three-dimensional finite-element seepage analyses are used to develop the response surface to take into account the inherent three-dimensional aspects of the feature. As a result of the analysis, probability distribution functions with respect to hydraulic gradient and factor of safety against heave are developed. The methodology can be adapted to any type of geomorphic feature and, as an example, a crevasse splay deposit is presented.
Reliability-Based Three-Dimensional Assessment of Internal Erosion Potential due to Crevasse Splays
Polanco-Boulware, Lourdes (author) / Rice, John D
2017
Article (Journal)
English
BKL:
56.20
Ingenieurgeologie, Bodenmechanik
Reliability-Based Three-Dimensional Assessment of Internal Erosion Potential due to Crevasse Splays
| Online Contents | 2016
Reliability-Based Three-Dimensional Assessment of Internal Erosion Potential due to Crevasse Splays
| British Library Online Contents | 2017
| Engineering Index Backfile | 1888
| ASCE | 2021