Soil/water interaction during the breaching process of overtopped embankments

Pickert, Gerd; Jirka, Gerhard H.; Bieberstein, Andreas; Brauns, Josef

doi:10.1201/b16998-115

Cited by 6 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10.1029/2019WR026941 Table 1 assesses and compares the applicability of the aforementioned techniques for fluvial dike breaching experiments. It should be noted that experiments of Frank and Hager (2014) and Pickert et al (2004Pickert et al ( , 2011 relied partially or totally on video recordings through the transparent sidewall of the flume. This is not feasible in a fluvial configuration, because the assumption of symmetrical dike breach evolution is no longer relevant (Rifai et al, 2017).…”

Section: Monitoring Of Bed Evolution In Hydraulic Experimentsmentioning

confidence: 99%

“…Pickert et al (2004, 2011) conducted experiments on embankment dam breaching induced by flow overtopping. The evolving geometry was monitored by the fringe projection technique, which consists in projecting parallel fringes on the dam by a video projector.…”

Section: Monitoring Of Bed Evolution In Hydraulic Experimentsmentioning

confidence: 99%

“…Hereafter, three key applications of imagery-based, nonintrusive systems for monitoring dam or dike breaching through the water surface are reviewed and compared. Pickert et al (2004Pickert et al ( , 2011 conducted experiments on embankment dam breaching induced by flow overtopping. The evolving geometry was monitored by the fringe projection technique, which consists in projecting parallel fringes on the dam by a video projector.…”

Section: Monitoring Of Bed Evolution In Hydraulic Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Continuous Monitoring of Fluvial Dike Breaching by a Laser Profilometry Technique

Rifai

Schmitz

Erpicum

et al. 2020

Water Resources Research

View full text Add to dashboard Cite

A nonintrusive, high-resolution laser profilometry technique (LPT) has been developed for continuous monitoring of the three-dimensional (3-D) evolving breach in laboratory models of noncohesive fluvial dikes. This simple and low-cost setup consists of a commercial digital video camera and a sweeping red diode 30 mW laser projecting a sheet over the dike. The 2-D image coordinates of each deformed laser profile incident on the dike are transformed into 3-D object coordinates using the direct linear transformation (DLT) algorithm. All 3-D object coordinates computed over a laser sweeping cycle are merged to generate a cloud of points describing the instantaneous surface. The DLT-based image processing algorithm uses control points and reference axes, so that no prior knowledge is needed on the position, orientation, and intrinsic characteristics of the camera, nor on the laser position. Because the dike is partially submerged, ad hoc refraction correction has been developed. Algorithms and instructions for the implementation of the LPT are provided. Reconstructions of a dike geometry with the LPT and with a commercial laser scanner are compared in dry conditions. Using rigid dike geometries, the repeatability of the measurements, the refraction correction, and the dike reconstruction have been evaluated for submerged conditions. Two laboratory studies of evolving fluvial dike breaching due to flow overtopping have been conducted to demonstrate the LPT capabilities and accuracy. The LPT has advantages in terms of flexibility and spatiotemporal resolution, but high turbidity and water surface waves may lead to inaccurate geometry reconstructions.

show abstract

Section: Monitoring Of Bed Evolution In Hydraulic Experimentsmentioning

confidence: 99%

Section: Monitoring Of Bed Evolution In Hydraulic Experimentsmentioning

confidence: 99%

Section: Monitoring Of Bed Evolution In Hydraulic Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

Continuous Monitoring of Fluvial Dike Breaching by a Laser Profilometry Technique

Rifai

Schmitz

Erpicum

et al. 2020

Water Resources Research

View full text Add to dashboard Cite

show abstract

“…The dike crest is collapsing while the lateral and vertical erosion processes are taking place in the downstream and upstream slope. At the end of tests, A Venturi or hourglass shape for the dike breach profile is viewed due to pore water pressure in dike slope [29]. The author has investigated the effect of inflow discharges on the development of negative pore water pressure and water content inside the sand embankment dike during spatial overtopping tests.…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Types on The Development of Matric Suction and Volumetric Water Content for Dike Embankment During Overtopping Tests

Hassan

Ismail

2018

CivileJournal

View full text Add to dashboard Cite

The resistance of dike materials has a great effect on the development of hydraulic engineering around the world. It helps to understand the mechanism of dike failure occurred due to the influence of hydraulics and Geotechnical parameters. The overtopping moment is one of the main failures that reduces the stability of the dike embankment through initiating the breach channel inside dike crest as a result of water flow above the downstream slope of the dike. Two spatial overtopping tests were conducted at in Hydraulic Geotechnical laboratories at the University Sains of Malaysia to observe the evolution of matric suction and volumetric water content for two soil types of sand and very silty sand soils. A pilot channel was cut in dike crest along the side wall of the small flume channel to represent the transition water flow from upstream into downstream slopes during overtopping test. The results indicated that the matric suction decreases due to the increase of volumetric water content during the saturation of dike body. The proportion increasing and decreasing of volumetric water content and matric suction is lower in very silty sand than those in sand soil due to the presence of fine particles in previous soil.

show abstract

“…These stages are very similar to stage process described by Zhu et al [14] for cohesive dike embankments. Pickert et al [15] and Pickert et al [16] observed the mechanism of breach channel during the 3-D overtopping test under different soil grain sizes. They noticed that fine particles have different erosion patterns during the overtopping failure and the side-slope failure will likely occur due to the faster saturation process.…”

Section: Introductionmentioning

confidence: 99%

Influence of dike slope on the development of infiltration water and erosion processes during overtopping tests

Hassan

Ismail

2018

IJET

View full text Add to dashboard Cite

The usage of dikes embankments has a great influence on the development of hydraulic engineering. It increases the suitability of water resources for humanity needs. Different Geotechnical and hydraulics powers affect on the stability of dike construction through transition of water flow in the upstream slope. The development of erosion process inside dike construction occurred as a result of an overtopping water flow cross above the dike crest. The dike erosion initiates breach channel inside dike and later widened into upstream and downstream slopes. In this study, a 2D and 3D vertical and horizontal erosions test is constructed in Hydraulic Geotechnical laboratories at the Universiti Sains Malaysia to observe the evolution of the breach channel during spatial overtopping failure. Two constant dike slopes of (1V:3H) and (1V:2.5H) for both upstream and downstream slopes are used as a parametric test during overtopping tests. The vertical and horizontal distributions of water levels are also highlighted prior to overtopping failure. The results indicate that the vertical and horizontal erosion widen the dike breach for slope of 1V:2.5H faster than those for 1V:3H while the spread of water infiltration in horizontal and vertical levels are higher for latter slope than for previous one.

show abstract

Soil/water interaction during the breaching process of overtopped embankments

Cited by 6 publications

References 1 publication

Continuous Monitoring of Fluvial Dike Breaching by a Laser Profilometry Technique

Continuous Monitoring of Fluvial Dike Breaching by a Laser Profilometry Technique

Effect of Soil Types on The Development of Matric Suction and Volumetric Water Content for Dike Embankment During Overtopping Tests

Influence of dike slope on the development of infiltration water and erosion processes during overtopping tests

Contact Info

Product

Resources

About