Stability analysis of double V-shaped gully embankment: dimension-reduced calculation method

Abstract

The slope stability is generally analyzed by a 2D method, ignoring the spatial effect (SE), which no longer meets the evaluation accuracy requirement. This problem is particularly prominent for the embankment built on the double V-shaped gully (E-DVSG), which is a typical but unique topography in the mountainous area. Moreover, the technical requirements for engineers will increase sharply if a 3D slope stability calculation method is adopted. To tackle this issue, pragmatically, a dimension-reduced slope stability analysis method (DR-SSAM) considering the SE of the E-DVSG was proposed and verified by a case study. Specifically, the DR-SSAM obtained the 3D safety factor of the E-DVSG by using the spatial effect curves and the safety factor from the 2D model. The results showed that the method was rational and efficient for engineering applications. Besides, the SE generation mechanism and condition along with its influences resulted from the major factor were addressed thoroughly.

Stability analysis of ultra-high and steep reinforced soil fills slopes based on strength reduction

“…Que et al proposed a dimensionality reduction slope stability analysis method (DR-SSAM), which considers the spatial effects of double V-shaped gully embankments. The rationality and effectiveness of this method in engineering applications were verified through case studies [18]. Yang et al used digital image processing (DIP) technology to establish a real three-dimensional slope stability analysis slope structure model, and studied its stability using the latest strength reduction numerical manifold method (SRNMM) [19].…”

Rainfall Erosion Damage of Residual Soil Slope in Intermittently Frozen Area Based on Discrete Element Method

“…Intermittently frozen areas are widely distributed in the world, accounting for 6.6% of the exposed lands in the coldest month of the year in the Northern Hemisphere (Baranov, 1964;Zhang et al, 2003;Lu et al, 2017). Taking China, for example, it is mostly distributed in the south of the Yangtze River and the north of the Pearl River Basin, covering an area of about 1.9 million square kilometers and accounting for about 20% of the total national area (Que et al, 2017;Que et al, 2021).…”