Study of critical failure surface influencing factors for loose rock slope

Abstract

In current research, a novel geometrical technique is introduced to estimate the length (L) of sliding arc by considering slip surface entry point distance (de). Morgenstern-Price limiting equilibrium and strength reduction methods are selected within the framework of SLOPE/W and FLAC3D softwares respectively, to study the sliding mechanism and stability-effecting factor for a loose rock slope comprise of two different material. Also, the variability influence of strength parameters (cohesion force and friction angle) and the depth of pore water pressure on safety factor, failure depth (D) and distribution range of critical failure surface (CFS) are investigated through software. The results show that the shear strength parameters and the depth of pore water pressure plays a significant role in altering overall stability and the distribution range of CFS for a loose rock slope. Shallow failure with composite failure surface is much easier to occur for loose rock slope subjected to pore water pressure and material heterogeneity. These findings can be effectively used for loose rock slope reinforcement design.

Analysing the interactions and complexities of the operations in the production area of an FPSO platform using the functional resonance analysis method (FRAM)

“…Onboard risks in the process plant of offshore facilities involve complex system elements interactions, including workers, equipment, organisational culture and information flow, as well as nonlinear coupling relationships among them. In this context, offshore work activities have been analysed by traditional risk analysis using machine learning algorithms (Zhang et al 2018 ), dynamic Bayesian network (Sule et al 2018 ) and custom computer simulations (S. Wang et al 2021 ) that can handle complicated technological system, but still lack an appropriate approach to complex sociotechnical systems. Traditional risk assessment methodologies focus on a linear cause and effect relationship between the system elements, ignoring how the interactions and outcomes happen in real work scenarios (W. Li et al 2019 ).…”

An integrated geotechnical and geophysical investigation of a catastrophic landslide in the Northeast Himalayas of Pakistan

“…LEM assumes the failure slope surface as a rigid body (Cheng & Zhou, 2015). Sliding surface/body carries essential evidence and has been widely used previously to analyse the stability conditions of all slope types (Wang et al, 2021).…”

“…LEM assumes the failure slope surface as a rigid body (Cheng & Zhou, 2015). Sliding surface/body carries essential evidence and has been widely used previously to analyse the stability conditions of all slope types (Wang et al, 2021). SLOPE/W, a product of GeoStudio software system, gives access to complex and broader field of difficulties, together with the selection of stresses and calculated water pressures in the stability study.…”

“…Finite difference method (FDM; e.g., Stanisz, Pilecki, & Wo zniak, 2012) or the boundary element method (BEM) can also be used. LEM is also frequently adopted for slope stability analysis, primarily due to their comfort of use and ease (Arca & Lorenzo, 2018;Wang, Ahmed, & Wang, 2021). Numerical simulations are also useful for stability analysis (Azarafza, Asghari-Kaljahi, & Akgün, 2017a) and key block analytical method can be used for rock slope failure analysis (Azarafza, Asghari-Kaljahi, & Akgün, 2017b).…”