Stability Analysis of Slope with Water Flow by Strength Reduction Method

Wei, W. B.; Cheng, Yung Ming

doi:10.3208/sandf.50.83

Cited by 18 publications

(6 citation statements)

References 16 publications

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“…Further, the safety factor is considered the key indicator of slope stability. Over the previous decades, the strength reduction technique in finite element slope stability analysis has been employed by many authors, due to its efficiency in estimating slope stability [17][18][19][20][21][22][23][24][25]. At present, the technique has been developed to analyze the stability of complex geometries such as excavation slope models [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

Raouf,

Feng,

Zhang

et al. 2024

Applied Sciences

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This study aims to determine the cause of a landslide located at Taihu Resort in Suzhou, Jiangsu Province, China. Field monitoring has been conducted, including two-dimensional finite element method (FEM) numerical analyses to examine slope stability under different working conditions. The monitoring data indicated that the slope deformation was triggered in two phases: at a certain period when the slope was cut and moderate rainfall occurred in November; and afterward, when a continuous heavy rainfall intensity hit during the monsoon rainfall, which accelerated sliding of the slope. Numerical simulations show that stress and maximum displacement distributions formed and redistributed during the excavation process, where the shear strain occurred mainly in the front layer of soil. Additionally, the factor of safety of the slope decreases gradually with the increase in the excavation rate. During 15 days of continuous rainfall infiltration, the slope under heavy rainfall indicates a minimum factor of safety (FoS). Specifically, the slope excavation followed by heavy rainfall intensities contributed significantly to the landslide.

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Section: Introductionmentioning

confidence: 99%

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

Raouf,

Feng,

Zhang

et al. 2024

Applied Sciences

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“…The results indicated that obtained factor of safety for reinforced slopes analyzed using LEM may not be the same as those estimated by modified FEM. In another study, carried out by Wei et al [25], the effect of the presence of water flow on the stability of the slope was investigated using SSRM. It was shown that there is a slight difference in obtained safety factors between considering pore pressure water within clay soil slopes and the absence of it.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Shear Strength Reduction Method in Slope Stability of Reinforced Slopes by Anchor and Nail

Hosseini,

Astaraki,

Imam

et al. 2024

Buildings

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Since the stability of slopes in infrastructures such as road and railroad embankments, excavations, and, in general, earthwork is important, analyzing the stability of these slopes has been one of the main focuses of geotechnical engineers. Although analyzing both reinforced and unreinforced slopes is needed, reinforced slopes require special attention as the reinforcement elements significantly affect the calculations. Hence, the current study’s aim is to find out the differences between obtained safety factors using the Limit Equilibrium Method (LEM) and Shear Strength Reduction Method (SSRM). For this purpose, first, the origin differences in terms of Safety Factor (SF) are theoretically determined according to basic formulas for the aforementioned techniques. Then, to verify the formula, several numerical modelings are carried out using in situ measured geotechnical data to better understand the differences in terms of safety factors. The results indicate that for the reinforced slope with an SF value of higher than 1, the SSRM provides a higher SF in comparison with the other techniques, and the origin of this difference is the definitions of the SF in the different methods.

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“…In mountainous and hilly areas, landslides are more common, and similar to earthquakes, mudslides and other disasters, generally have relatively large hazard extent. In the vast land area of China, the geographical conditions are relatively complex, and the landslide areas are widely distributed, especially in the mountainous areas of southwest, northwest, and east China [1][2]. When a landslide occurs, partial or whole pieces of land will appear one after another in a relatively slow speed and a relatively long cycle, and will intermittently slide.…”

Section: Introductionmentioning

confidence: 99%

Applying the strength reduction method to study of stability of residual mountains: A particular application

Jin¹,

Hua²,

Qiao³

2023

3C Tecnología

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Due to huge disaster-caused force, seismic geological disasters primarily induce residual landslide, collapse and debris flow disasters with far higher hazard extent than that of earthquake disasters. Wherefore, this paper, with various vibration slopes caused by the most representative Wenchuan earthquake as research objects, introduces the strength reduction method to the stability study of residual mountains in a certain area, puts forward dynamic stability slope evaluation method based on dynamic and overall strength reduction method to obtain the mountain slope stability situation in the process of gradual instability, searches out the sliding surface of progressive expansion making use of dynamic strength reduction method and calculates dynamic safety index in the process of gradual slope instability pursuant to the calculation advantages of dynamic strength reduction method, so as to realize the analysis and regulation of the whole process of slope instability. The results show that in the stability analysis of a homogeneous slope, the safety index of slope stability calculated by strength reduction method is 6.7%, 8.8% and 10.5% higher than that calculated by finite element limit equilibrium method, Bishop method and Janbu method respectively. In the stability analysis of a multi-layer soil slope, the safety index of slope stability calculated by strength reduction method is 4.8%, 4.3% and 9.4% higher than that calculated by other three algorithms. While in the stability analysis of soft interlining slope, the safety indexes of slope stability calculated by the method proposed in this paper are increased by 26.10%, 29.11% and 26.46% respectively compared with other three algorithms, indicating that the stability of landslide residual mountains calculated by strength reduction method proposed in this paper is the highest.

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Stability Analysis of Slope with Water Flow by Strength Reduction Method

Cited by 18 publications

References 16 publications

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

Investigation of Shear Strength Reduction Method in Slope Stability of Reinforced Slopes by Anchor and Nail

Applying the strength reduction method to study of stability of residual mountains: A particular application

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