Slope Stability Analysis of Earthen Levee Strengthened by High Performance Turf Reinforcement Mat under Hurricane Overtopping Flow Conditions

Xu, Yingzi; Li, Lin; Amini, Farshad

doi:10.1007/s10706-012-9511-8

Cited by 11 publications

(3 citation statements)

References 13 publications

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“…HTPRM has excellent tensile properties and corrosion resistance. The application effect of this material in engineering has been verified by full-scale model tests (Li et al 2014;Xu et al 2012) and three-dimensional numerical simulation (Li et al 2015). As a new type of composite protection system, ARVS has high environmental friendliness.…”

Section: Introductionmentioning

confidence: 94%

Field study of a new ecological slope protection method applied to expansive soil slope

Zhu

et al. 2021

Arab J Geosci

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This paper used a new type of ecological slope protection method-anchor reinforced vegetation system (ARVS) for shallow protection of the expansive soil slope. We established a test slope with different protection measures in the suburbs of Nanning; the artificial simulated rainfall tests and comprehensive in situ monitoring were carried out on the slope. The protective effect and mechanism of ARVS on expansive soil slopes under the action of rainfall were systematically studied. The results showed that the soil temperature in the ARVS area at a depth of 1.0 m was 1.77 ℃ lower than which in the bare area. ARVS showed superior soil and water conservation performance; when the rainfall intensity was 100 mm/h, the runoff and erosion in the ARVS area were reduced by 36.3% and 84.5% compared with the bare area, respectively. Under the protection of ARVS, the rangeability of soil volumetric water content was significantly reduced, effectively avoiding uneven cracking caused by water content gradients, and weakening the disadvantages of the violent drying-wetting cycle caused by rainfall-evaporation. Compared with the bare area, the vertical and horizontal deformations of the soil in the ARVS area decreased by 56.9% and 70.9% during the monitoring period, respectively. This paper aims to provide a new idea and method for ecological slope protection of expansive soil slopes.

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Section: Introductionmentioning

confidence: 94%

Field study of a new ecological slope protection method applied to expansive soil slope

Zhu

et al. 2021

Arab J Geosci

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“…(Dou et al, 2014) During Hurricane Katrina, the levee system surrounding New Orleans experienced catastrophic overflowing, which was possibly due to shoaling and resulted in the inundation of approximately 80 % of the city. Many researchers have studied the stability of levees under overflowing (Seed et al, 2008a, b;Xu et al, 2012). The consequence of overflowing for the flood wall in suburban areas of New Orleans, USA, was the gap formed between the flood wall and the canal-side backfill.…”

Section: Introductionmentioning

confidence: 99%

Levee reliability analyses for various flood return periods – a case study in southern Taiwan

Huang

Weng

2015

Nat. Hazards Earth Syst. Sci.

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Abstract. In recent years, heavy rainfall conditions have caused disasters around the world. To prevent losses by floods, levees have often been constructed in inundationprone areas. This study performed reliability analyses for the Chiuliao First Levee in southern Taiwan. The failure-related parameters were the water level, the scouring depth, and the in situ friction angle. Three major failure mechanisms were considered: the slope sliding failure of the levee and the sliding and overturning failures of the retaining wall. When the variability of the in situ friction angle and the scouring depth are considered for various flood return periods, the variations of the factor of safety for the different failure mechanisms show that the retaining wall sliding and overturning failures are more sensitive to the change of the friction angle. When the flood return period is greater than 2 years, the levee could fail with slope sliding for all values of the water level difference. The results of levee stability analysis considering the variability of different parameters could aid engineers in designing the levee cross sections, especially with potential failure mechanisms in mind.

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“…During Hurricane Katrina, the levee system surrounding New Orleans experienced catastrophic overtopping, bringing approximately 80 % of the city under water. Many researchers have studied the stability of levees under overtopping flow (ASCE Hurricane Katrina External Review Panel 2007;Briaud et al 2008;Ubilla et al 2008;Seed et al 2008a, b;Storesund et al 2010;Song et al 2011;Xu et al 2012). However, in the case of Chiuliao first levee, overtopping was not the main failure mechanism.…”

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confidence: 99%

Levee failure mechanisms during the extreme rainfall event: a case study in Southern Taiwan

2013

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Extreme weather has recently caused many disasters worldwide. In August 8, 2009, Southern Taiwan suffered from serious floods during Typhoon Morakot. In this extreme rainfall event, the Chiuliao first levee in the Laonong River basin experienced catastrophic failure. Therefore, this study focuses on the levee failure mechanisms based on variations in levee water levels. Specifically, this study investigates four mechanisms based on limit state equilibrium. The first mechanism involves the slope stability under hydrostatic conditions at various water levels. The results of this analysis show that the levee cannot fail under this mechanism. The second mechanism involves the levee slope stability with steady-state seepage. Because the water levels are different on the protected and flood sides, the water recedes much faster on the flood side than the protected side. Based on this analysis, the levee slope might fail when the water level at the protected side is close to the top of levee and the water level at the flood side starts to recede. The third and fourth mechanisms involve the levee foundation failure in terms of sliding and overturning failure. The results of this study indicate that the levee foundation is more prone to sliding failure than overturning failure. Based on these results, this study shows that the levee failed when the water level at the protected side neared the top of levee while the water level at flood side started to recede. At this moment, the levee may fail because of both the slope failure with seepage and sliding failure of the levee foundation.

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Slope Stability Analysis of Earthen Levee Strengthened by High Performance Turf Reinforcement Mat under Hurricane Overtopping Flow Conditions

Cited by 11 publications

References 13 publications

Field study of a new ecological slope protection method applied to expansive soil slope

Field study of a new ecological slope protection method applied to expansive soil slope

Levee reliability analyses for various flood return periods – a case study in southern Taiwan

Levee failure mechanisms during the extreme rainfall event: a case study in Southern Taiwan

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