Slope stability wizard geometry section soil name material drainage behaviour c u c 0. Rock slope stability analysis pdf free download epdf. Maximum slope angle and height is controlled by the concentration and orientation of joints and by seepage. The probabalistic sara stability analysis for road access program is still under development. Rock slope stability analysis gian paol giani download. Each element obtains a numerical value from 0 black to 255 white representing the intensity of the pixel, which is described by a matrix, easily manipulated. Focus on rock engineering and slope stability newsletter. Stability analysis of jointed rock slope sciencedirect. Changing slope geometry 1 natural slopes hard massif rocks. A grayscale digital image forms an array of pixels the size of which is described by the image resolution.
Rock slope stability th 15th november 2018 chambery, manege conference center the fourth edition of the international symposium rss rock slope stability will be held in chambery, france, from th to 15th november 2018. The types of stabilization include rock anchors, shotcrete, drainage and scaling, as well as rock fall protecting. Rock slope stability analyses are routinely performed and directed towards assessing the safe and functional design of excavated slopes e. Irjet slope stability by live staking method of soil bioengineering. For an additional 9 years he was a principal advisor to. Rock slope stability analysis lec 1 linkedin slideshare. Kinematic analysis is a method used to analyze the potential for the. Key words rock slope stability 7 deterministic analysis 7 partial factors 7 probabilistic analysis 7 factor of safety 7 input parameters bull eng geol env 2000 58. The factor of safety is a very useful index for determining how close or far away a slope is from failure, and its accuracy is consistent with the accuracy of geotechnical input data. The antislide pile program is used for design of pile walls stabilizing slope movement or increasing safety factor of the slope. With the exception of the pile bearing capacity module, all modules can perform deterministic analyses as well as a probabilistic analyses. Rock slope stability analysis a variety of engineering activities require excavation of rock cuts. Considering the combined effect of slope overload, seismic load, anchoring effect, ice frost, slip surface drag force and slope groundwater pressure, the comparative analysis of typical rock slope sliding stability under waterless and saturated conditions shows that, the outflow joint blocking and the groundwater levels rising have obvious. Canmet, canada center for mineral and technology, 1977, pit slope manual 10.
The book deals with the methods of assessing the stability of rock slopes and the techniques of improving the stability conditions of natural and artificial. Small rockfalls, which may involve handsized rocks weighing only a few kilograms, can cause fatal injuries to workers away from the. Wyllie and mah 2004 and giani 1992 states rock material experienced a. The overstress of a slope or the reduction in the shear strength of its soil may cause a slope to displace. Stability analysis of rock slopes using the finite element method. Roctopple makes it easy to visualize the slope failure in both 2d and 3d. Roctopple is an interactive software tool for performing toppling analysis and support design of rock slopes. A case study from deccan traps, in mahabaleshwar, india has been studied using flac slope 5.
After simulating the fault zone and rqd values, the slope stability analysis is performed using the limit equilibrium method. Giani 1992 however, cited that although the coulomb criterion is widely used, it is. The limit equilibrium method is the most common approach for analyzing slope stability in both two and three dimensions. Application note slope stability analysis worked example. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of. Simple failure mechanisms using uniform rigid rockblock motions are incorporated in the yield design kinematic approach. Deals with the methods of assessing the stability of rock slopes and the techniques of improving the stability conditions of natural and artificial slopes which are at risk. Paul guyer is a registered mechanical engineer, civil engineer, fire protection engineer and architect with over 35 years experience in the design of buildings and related infrastructure. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of determining, relatively unambiguously, whether a. Simple, well considered engineering judgment based on fundamental principles, which identify all potential mechanisms of failure and account for the stability of each mechanism in. Llewelyn, srk consulting uk ltd a ll hard rock slopes within any quarry excavation should have an appropriate geotechnical design that takes into account the insitu rock mass strength and rock mass structure, with the level.
Rock slope stability analysis, p giani, 1992 scribd. Detailed pieziometric data at multiple locations and depths within and. System reliability analysis of rock slope stability. The rocks present at the bridge site are heavily jointed. The other is system reliability analysis for multiple failure modes of rock slope stability. Afosm method, reliability index, probability of slope failure, system. Stability analysis of rock slopes using the finite element. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. Usdot federal highway administration, usa giani jp.
Critical observations about the slope have been discussed in the paper index termsslope stability, rock mechanics, numerical. Based on the latest version of hoekbrown failure criterion, seismic rock slope stability charts have been produced. Conventional methods of slope stability analysis can be divided into three groups. Pdf rock slope stability assessment by using kinematic. Seismic rock slope stability charts based on limit. They are certainly major factors in cut slope stability and in. Pdf stability analysis of a rock slope in himalayas. The most serious disorders which can occur in slopes are 1 the sliding of blocks along the discontinuing surfaces which exist at the opening of trenches and 2 rock falls or sliding of blocks resulting from the rapid change in the mechanical characteristics of the rock bench which supports them.
While less than 1% of reported accidents are associated with slope stability problems, slope failures were responsible for about 15% of all u. Rock slope engineering stress mechanics strength of. Within the limit analysis framework, the pseudostatic method is employed by assuming a range of the seismic coe. Symbol parameter dimensions f factor of safety against sliding along sheet joint calculated h height of the overall slope or of each bench 60 m or 20 m respectively. A video file is a sequence of still images displayed at a constant rate fps. The slope stability analysis relies on the categorized rqd maps. Considering the combined effect of slope overload, seismic load, anchoring effect, ice frost, slip surface drag force and slope groundwater pressure, the comparative analysis of. Seismic rock slope stability charts based on limit analysis. Tagasoft geotechnical software slope stability analysis. This was applied in the model by selecting all the boundary lines between the mudstone and weathered mudstone unshow the water table, to facilitate. New material contained in this book includes the latest developments in earthquake engineering related to slope stability, probabilistic analysis, numerical analysis, blasting, slope movement monitoring and stabilization methods.
One is reliability analysis for a single failure mode of rock slope stability. Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the stability of earth and rockfill dams, embankments. Most slope stability analysis computer programs are based on the limit equilibrium concept for a two or threedimensional model. The slope, which has a height of 10 m, is assumed loaded under gravity with a horizontal to vertical stress ratio of 1. Rock slope stability accurate structural data collection for use in quarry slope design by m. The geometries of easting slices are recreated in rocscience slide, including outer boundaries, contact boundary between overburden and rock, fault boundaries, and boundaries between rqd categories. The stability of rock slopes is an important issue in both civil and mining engineering. In the vast majority of slope stability analysis cases, geotechnical engineers primarily conduct design based on calculated factor of safety values. Application note slope stability analysis worked example 4. Slope stability analysis by the limit equilibrium method. Rock slope stability analysis article pdf available in canadian geotechnical journal 312.
Evaluating techniques for monitoring rock falls and slope. Stability analysis of a tetrahedral wedge that may form in a rock slope by the intersection of two planar discontinuities, the slope face, and the upper slope with or without a tension crack in the upper slope. Fhwa nhi06088 6 slope stability soils and foundations volume i 6 3 december 2006 6. Pdf in this paper a numerical analysis of slope stability problems in blocky rock. Slope stability analysis and uncertainty quantification. Today, a vast range of slope stability analysis tools exist for both rock and mixed rocksoil slopes. Engineers analyze slope to calculate quantitative indicators of performance such as factor of safety, lateral deformation, probability of failure and reliability index. The first step is to analyze the structural fabric of the site to determine if orientation of the discontinuities could result in instability of the slope under consideration. In civil engineering, projects include transportation systems such as highways and railways, dams for power production and water supply, and industrial and urban development. The prokon geotechnical analysis suite comprises a number of modules for analysis stability and determining capacity. Gian paol giani deals with the methods of assessing the stability of rock slopes and the techniques of improving the stability conditions of natural and artificial slopes which are at risk. We illustrate the merits of the suggested approach on an example of a 10 m homogeneous rock slope with a 35. The generalized hoekbrown parameters of the slope rock mass are provided in table 1. Rock slope stability analysis utilization of advanced.
Rock slope stability analysis hardcover january 1, 1992 by gian paolo giani author see all formats and editions hide other formats and editions. However the minimum constructive elements provided in the program do not allow the software to perform analysis for complex cases. The stability analysis of a jointed rock slope with two sets of unfilled joints, under its own weight, is carried out directly by considering failure surfaces along some particular joints and also going through the intact rock. These analyses are often completed using slope stability charts and the dsara deterministic stability analysis for road access slope stability program. He specialises in underground rock engineering investigation and design, with expertise in numerical modelling, selecting mining methods, designing excavations, investigating shaft stability and geotechnical risk, while providing. Based on the assumption of the improved groundwater pressure distribution, the calculation expression of antisliding stability factor for typical watersaturated rock slope is deduced through limit equilibrium method. Pdf on jan 1, 2011, alavi nezhad khalil s v abad and others published rock slope stability assessment by using kinematic analysis and slope mass rating at bandar seri alam, johor find, read. This determination is usually accomplished by means of stereographic analysis of the structural fabric and. Application note slope stability analysis worked example figure 2. Slope stability verification manual deep excavation llc page 11 e. It also highlights some of the differences in approach to that adopted by the limit equilibrium method of slices. Detailed pieziometric data at multiple locations and depths within and below the slope will likely be needed.
In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. Fundamentals and methods presents basic principles for the safe design of constructed or natural earth slopes. The objective of the analysis was to evaluate and judge the condition and overall stability of the exposed rock, and identify where. Rock slope stability download ebook pdf, epub, tuebl, mobi.
Generally, reliability analysis of rock slope stability can be divided into two categories. Scaling factors for the coefficient of restitution. Deterministic and probabilistic analyses are possible. Galena is one of the worlds leading slope stability analysis packages now used in 74 countries, in some of the worlds largest mining operations. An introduction to slope stability and protection j. In civil engineering, projects include transportation systems such as highways and railways, dams for power production and. Slope stability best slope stability analysis software.
Chapter 10 slope stability analysis nysdot geotechnical page 106 january 21, 2014 design manual 10. Rock slope stability analysis ubc eoas university of british. However, a saturated slope with parallel seepage will be about half as steep. It can be used mainly for preliminary analysis of slopes since it can provide an estimate of the factor of safety with minimum effort from the user. If you dont already have adobes pdf reader, you can download it free. The rock stability program is designated for analysis of rock slope stability for a specified type of failure, including a planar or polygonal slip surface or rock wedge. The limit equilibrium method first defines a proposed slip surface and analyzes the surface to obtain the factor of safety. Slope stability analysis geotechnical design manual m 4603 chapter 74 december 2006 slope stability analysis detailed assessment of the groundwater regime within and beneath the slope is also critical. Rock slope stability assessment by using kinematic analysis and slope mass rating at bandar seri alam, johor conference paper pdf available january 2011 with 3,839 reads how we measure reads.
Application note slope stability analysis worked example 1 introduction this note describes the typical steps followed in setting up and analysing a slope stability problem with limitstate. Stability analysis of a rock slope in himalayas 3 fig. For all but very weak rock materials, the analysis of rock slope stability is fundamentally a twopart process. Stability analysis geotechnical software geo5 fine.
Balkema and from professor gian paolo giani to reprint text and gures from pages 103129 and 191228 of rock slope stability analysis, by gian paolo giani. Rocfall is a statistical analysis program designed to assist with assessment of slopes at risk for rockfalls. Simslope stands for simplified slope stability analysis software. It also describes survey and measurement methods to model the behaviour of rock masses. Antisliding stability analysis of saturated rock slope.
Despite the widespread availability of software programs using sophisticated numerical methods, the physical principles of slope engineering should not be forgotten. On civil projects, rock cuts must be safe from rock falls and largescale slope instability during both construction and operation. Galena is a powerful, comprehensive and easytouse slope stability analysis system developed by geotechnical engineers for geotechnical, mining and civil engineers who want to solve geotechnical problems quickly and easily galena is one of the worlds leading slope stability analysis packages now used in 74 countries, in some of the worlds largest mining operations. Global stability with relict slip surface in this scenario, the presence of the relict slip surface was assumed. Design and analyze planar rock slopes with rocplane.
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