The application of Goodman and Bray's limit equilibrium analysis of multi-block toppling failures to these three slopes is demonstrated. Failure of a rock slope on one or two plane surfaces is the simplest but at the same time the most important type of sliding failure and forms the basis for the stability analysis of rock slopes. An analysis is presented here which can take these factors into account. Landslide developed in rock mass usually has irregular shear plane. The stratified rock of Jurassic strata is widely distributed in Three Gorges Reservoir Region. The shear strength is represented by the Mohr-Coulomb criteria: τ= c The wedges are usually four or five sided. A probabilistic analysis will provide you with a safety factor distribution and a probability of failure. Plane failure in rock slopes is relatively a simple mode of failure, however it may involve complex failure mechanism owing to its complex geometry (Yoon et al., 2002), heterogeneity in geology, non-planer potential failure plane, variability in shear-strength along the potential failure plane (Tang et al., 2016), uneven distribution of the water forces (Ahmadi and Eslami, 2011), surcharge (Shukla et al., … Hoek and Bray (1981) gave an analytical approach for plane failure analysis for rock slopes that is limited to those slopes in which the upper slope surface is horizontal and the tension crack is vertical. Varying the tension crack from vertical to 70° only has an effect when the upper slope angle is less than 20°. A complete program is given in this paper for the widely used "Hewlett- Packard HP 65" pocket calculator. ... • Analysis of this type of failure is very complex and rarely done. Der Einfluss der Kohäsion kommt dabei explizit zum Ausdruck, die Einflüsse der Geometrie, des Reibungswinkels und des Sicherheitsfaktors treten in zwei Faktoren zusammengefasst in Erscheinung. You do not currently have access to this content. © 2021 Springer Nature Switzerland AG. The most important types of slope failure are illustrated in Fig.1. ROCK SLOPES PROCESSES AND RECOMMENDED METHODS FOR ANALYSIS A. K. Alzo'ubi College of Engineering, Abu Dhabi University, UAE ABSTRACT: The stability of rock slopes is of great concern in many engineering projects, for example, road cuts, foundations, retaining walls, and dam excavation Generally, rock slopes susceptible to instability could be divided into two main categories, the … 2.6 Mechanism of rock slope failure under self weight, water forces, surcharge, horizontal seismic force, and stabilizing force. The orientation and spacing of the discontinuities plane with respect to the slope face are the determinants of rock slope failure. These methods are developed on the assumption that the plane of failure is circular arc, apart from the Culmann method that assumes a plane surface of failure through the toe of the slope. Stability of Slopes Introduction. Introduction. The UDEC analysis per- formed by Lorig & Varona (2001) predicts a failure mechanism with a … The 16th U.S Symposium on Rock Mechanics (USRMS), Federal Institute of Technology, Institute of Highways and Underground Structures, Department of Rock Mechanics. (1995). These slopes often include open-pit mining, embankments, road cuts, landfills, and excavations. Plane failure is a simple mode of failure in rock s lopes, however due to com plexity in geometry, variability in discontinuity characteristics, uneven distribution of water forces within the slope, The rock is variably weathered, as shown by the brown colours in Figures 1 and 2. On a découvert une analogie formelle entre le glissement sur un plan et le glissement d'un coin de roche le long de deux plans. Modes of failure in rock slopes (after Hoek and Bray [1]). 2. A modified pseudo-dynamic approach was used for a reliability-based stability analysis of plane failure rock slopes. Gravitational and seepage forces tend to cause instability in natural slopes, in slopes formed by excavation and in the slopes of embankments and earth dams. An approach for calculating distributed factor of safety of the irregular shear plane was put forward in this paper. Stability of Finite Slopes with Plane Failure Surface ... • Rapidly moving mass of material (rock or soil) that travels mostly through the air with little or no interaction between moving unit and another. Search for other works by this author on: 1975. Symposium on Rock Mechanics. 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