Mechanistic Detachment Rate Model to Predict Soil Erodibility Due to Fluvial and Seepage Forces

@article{AlMadhhachi2014MechanisticDR,
  title={Mechanistic Detachment Rate Model to Predict Soil Erodibility Due to Fluvial and Seepage Forces},
  author={Abdul-Sahib T. Al-Madhhachi and Garey A. Fox and Gregory J. Hanson and Avdhesh K. Tyagi and Rifat Bulut},
  journal={Journal of Hydraulic Engineering},
  year={2014},
  volume={140},
  pages={04014010}
}
AbstractThe erosion rate of cohesive soils is typically computed using an excess shear stress model based on the applied fluvial shear stress. However, no mechanistic approaches are available for incorporating additional forces, such as groundwater seepage into the excess shear stress model parameters. Seepage forces are known to be significant contributors to streambank erosion and failure. The objective of this research was to incorporate seepage forces into a mechanistic fundamental… Expand
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References

SHOWING 1-10 OF 22 REFERENCES
Deriving Parameters of a Fundamental Detachment Model for Cohesive Soils from Flume and Jet Erosion Tests
Abstract. The erosion rate of cohesive soils is commonly quantified using the excess shear stress model, which is dependent on two major soil parameters: the critical shear stress (I„ c ) and theExpand
Erosion of Noncohesive Sediment by Ground Water Seepage : Lysimeter Experiments and Stability Modeling
Seepage may be a significant mechanism of streambank erosion and failure in numerous geographical locations. Previous research investigated erosion by lateral subsurface flow and developed a sedimentExpand
Soil properties controlling seepage erosion contributions to streambank failure
The majority of sediment leaving catchments may be from streambank failure. Seepage erosion of unconsolidated sand above a restrictive layer is an important erosion process in incised streams thatExpand
The Role of Subsurface Flow in Hillslope and Stream Bank Erosion: A Review
Sediment is one of the most common causes of stream impairment. Great progress has been made in understanding the processes of soil erosion due to surface runoff and incorporating these in predictionExpand
Seepage-Induced Streambank Erosion and Instability: In Situ Constant-Head Experiments
AbstractThe effects of seepage on streambank erosion and failure are less understood compared to fluvial processes, especially the linkage between surface water and groundwater mechanisms. Field dataExpand
Sediment Transport Model for Seepage Erosion of Streambank Sediment
Erosion by lateral, subsurface flow is known to erode streambank sediment in numerous geographical locations; however, the role of seepage erosion on mass failure of streambanks is not wellExpand
Seepage caused tension failures and erosion undercutting of hillslopes
Summary Seepage has been suggested as an important factor in gully and river bank erosion. This study investigated the underlying mechanisms of instability by seepage in laboratory studies. A 25-cmExpand
Numerical Modeling of Bank Instability by Seepage Erosion Undercutting of Layered Streambanks
Undercutting, primarily considered due to fluvial mechanisms, has been reported to have a major impact on slope failure. Predicting bank collapse specifically due to seepage erosion undercutting byExpand
Channel Erosion Study of Two Compacted Soils
ABSTRACT THE erodibility of two soil materials under varied hydraulic stresses in open channel flow was determined. Observed changes in channel bed roughness during flow events confirmed observationsExpand
Measuring streambank erosion due to ground water seepage: correlation to bank pore water pressure, precipitation and stream stage
Limited information exists on one of the mechanisms governing sediment input to streams: streambank erosion by ground water seepage. The objective of this research was to demonstrate the importanceExpand
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