Riprap Effect on Hydraulic Fracturing Process of Cohesive and Non-cohesive Protective Levees

Javad Ahadiyan, Farhad Bahmanpouri (), Atefeh Adeli, Carlo Gualtieri and Alireza Khoshkonesh
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Javad Ahadiyan: Shahid Chamran University of Ahvaz (SCU)
Farhad Bahmanpouri: Hydraulic Engineering, IRPI-CNR (Consiglio Nazionale Delle Ricerche)
Atefeh Adeli: Chamran University of Ahvaz (SCU)
Carlo Gualtieri: University of Napoli Federico II
Alireza Khoshkonesh: Bu-Ali Sina University

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2022, vol. 36, issue 2, No 12, 625-639

Abstract: Abstract A comprehensive experimental study was conducted to evaluate the effects of soil properties and the rip-rap as well as cohesive and non-cohesive soil material and the riprap particle size on the breaching process and the failure mechanism of the levee. The results showed the crucial role of the riprap coverage and the soil properties in the breaching of the protective levees. In this regard, breaching was developed in both vertical and transverse directions. In the levee without riprap coverage, breach development was observed in the transverse direction while the levee was eroded in the streamwise direction. In contrast, in the levee with riprap coverage, breach development mainly occurred in the vertical direction. Furthermore, the flow rate across the breach was higher in the tests with no riprap compared to those with the riprap coverage. Comparisons suggested that the shorter the failure time, the longer the equilibrium time. The present research has some major implications for coastal and hydraulic engineering designs since the construction of levees is of great importance. Furthermore, the findings can be used to predict flooding and erosion induced by the embankment failure.

Keywords: Protective levees; Non-cohesive levee; Cohesive levee; Riprap; Erosion (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11269-021-03044-6

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