Assessment of earthquake-induced slope deformation of earth dams using soft computing techniques

Javdanian, Hamed; Pradhan, Biswajeet

doi:10.1007/s10346-018-1078-x

Cited by 28 publications

(3 citation statements)

References 60 publications

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“…Accordingly, several empirical models were developed based on the case histories for the estimating sliding displacement of earth dams and embankments (e.g. Javdanian and Pradhan, 2019; Singh et al, 2007; Vahedifard and Meehan, 2011). Moreover, proper post-earthquake investigation and analysis of earth dams and performance evaluation of simplified methods (e.g.…”

Section: Introductionmentioning

confidence: 99%

Displacement and damage analysis of earth dams during the 2023 Turkiye earthquake sequence

Lashgari,

Moss

2024

Earthquake Spectra

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The earthquake sequence that occurred on 6 February 2023 in Turkiye caused significant damage to various infrastructures including geostructures such as dams. A total of 17 earth dams within a 200-km radius of the earthquake epicenter experienced varying degrees of damage, ranging from minor (∼2 cm) to major (up to ∼150 cm) deformations. As study of these reveals that the damaged dams are located within the closest distance to the fault of less than 30 km, with an average value of ∼12 km. This study specifically focuses on the seismic displacement analysis of the 17 damaged dams, utilizing the sliding block methods. The recorded motion data was analyzed using the kriging technique to estimate the spectral response at the dam sites. Moreover, the recorded ground motions were scaled to the resonant period of the dam site to estimate acceleration time history. The findings reveal that the rigid block analysis can provide an average estimation of seismic displacement with a relative error of less than 44%. The results of the damage analysis indicate that seven dams reached the ultimate limit state and two dams experienced the serviceability limit state. Moreover, the univariate and multivariate fragility functions are developed to estimate seismic probabilistic analysis of earth dams based on the observed data and the limit states. The results show that the selection of a single intensity measure (IM) and a combination of IMs can affect the predicted probability of failure. The findings provide an insight into the resilience assessment of dams and other geosystems during this strong earthquake.

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Section: Introductionmentioning

confidence: 99%

Displacement and damage analysis of earth dams during the 2023 Turkiye earthquake sequence

Lashgari,

Moss

2024

Earthquake Spectra

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“…Many efforts have been made to analyze bank slope stability under the influence of excavation [9][10][11][12], earthquakes [13][14][15], seismic activity [16], rainfall [17][18][19][20], and freezethaw effects [21,22], especially the reservoir water level change [23,24]. But very few studies have compared the stability before and after GSP.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analyses of Slope Stability Considering Grading and Seepage Prevention

Feng

Yan

et al. 2023

Water

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The normal operation of the Yulangpei tailings reservoir is affected by landslide stability. In this paper, taking the main and side slopes near the dam bank of the Yulangpei ditch as an example, the water–soil coupling theory is applied to comprehensively evaluate the reliability of the side slopes of the tailings reservoir. Grading and seepage prevention (GSP) measures and the suction of the substrate are considered, as well as the infiltration of different rainfall and reservoir water levels. We numerically simulate the typical three forms of side slopes under the coupling conditions and conduct a reliable and comprehensive evaluation of the tailings reservoir side slopes. This study shows that the analysis of condition 1 indicates that the factor of safety (FS) of the bank slope shows a lag effect and that GSP can improve the FS of the slope, but not significantly for the main slope. The analysis of condition 2 shows that the weakening effect increases with the intensity of rainfall during the rainfall process, while the FS rebounds when the rainfall stops. The initial stability of the bank slope under different conditions improves after the GSP measures, but the main slope is more sensitive to the changes in rainfall and water level. The analysis of condition 3 shows that the overall trend of FS and displacement of the main slope shows a small decrease followed by a sharp increase. The FS of the side slope is negatively correlated with the change in total displacement, with a general trend of a slight increase followed by a sharp increase. After GSP, the overall FS of the main slope increases by about 3% and the total displacement decreases by about 87%, and the overall FS of the side slope increases by about 41%, while the total displacement decreases by about 66%.

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“…Therefore, it is beneficial to study the stability of the bank slope by introducing time as a factor, so as to discuss any dynamic changes occurring in the bank slope safety over time. Traditional analysis of slope events is often a comparative analysis of excavation (Chen et al 2018;Ran et al 2019;Singh and Lan 2017;Kang et al 2017), earthquakes (Zhou et al 2019;Javdanian and Pradhan 2018;Gomberg 2018), seismic activity (Tang et al 2014), rainfall (Vanwoert et al 2005;Zhuang et al 2018;Zhao et al 2018;Fu 2017), reservoir water level (Mandal et al 2019;Sun et al 2015), and freeze-thaw change effects (Fan et al 2014;Cheng et al 2017). Comparative analysis performed both before and after GSP is relatively rare.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Slope Stability Considering Grading and Seepage Prevention

Yan

Wu²,

Sun

et al. 2021

Preprint

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The normal operation of Yulangpei tailings reservoir is affected by landslide stability. In this paper, taking the main and side slopes near the dam bank of the Yulangpei ditch as an example, water-soil coupling theory is applied to comprehensively evaluate the reliability of the side slopes of the tailings reservoir. Grading and seepage prevention (GSP) measures and the suction of the substrate are considered, as well as the infiltration of different rainfall and reservoir water levels. We numerically simulate the typical three forms of side slopes under the coupling conditions and conduct a reliable and comprehensive evaluation of tailings reservoir side slopes. The study shows that under six reservoir water level changes, the factor of safety (FS) of the bank slope shows a hysteresis effect. According to nine rainfall infiltration conditions and during rainfall, the greater the rainfall intensity, the greater the weakening effect. When rainfall stops, the FS rebounds. After GSP measures, the initial stability of the bank slope under different conditions is improved, but the main slope is more sensitive to changes in rainfall and water levels.

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Assessment of earthquake-induced slope deformation of earth dams using soft computing techniques

Cited by 28 publications

References 60 publications

Displacement and damage analysis of earth dams during the 2023 Turkiye earthquake sequence

Displacement and damage analysis of earth dams during the 2023 Turkiye earthquake sequence

Numerical Analyses of Slope Stability Considering Grading and Seepage Prevention

Numerical Analysis of Slope Stability Considering Grading and Seepage Prevention

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