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. Slope stability is a major concern for geotechnical and mining engineers worldwide, and consequently, a great deal of effort at rocscience is dedicated to slope stability analysis software. Get your kindle here, or download a free kindle reading app. A slope stability problem in hong kong 7 the symbols and dimensions used in these models are as follows. Rock slope stability analysis giani, gian paolo on. Therefore, newmark sliding block analysis is still unable to evaluate slope stability. Stability calculations with slopew and plaxis2d to find out factorof s safety fos compare the result with novapoint gs stability analysis determination of critical failure surface of the slope sensitivity analysis cohesion and friction angle 3.
Redi rock wall this program is used for designing advanced retaining walls using redi rock retaining wall systems usa. Rock slope stability analysis, p giani, 1992 free download pdf. Simple failure mechanisms using uniform rigid rock block motions are incorporated in the yield design kinematic approach. The limit equilibrium method first defines a proposed slip surface and analyzes the surface to obtain the factor of safety. Stability of the slope is concerned with the relationship between driving and resisting forces. Sep 15, 2016 slope stability analysis is performed to assess the safe design of a humanmade or natural slopes and the equilibrium conditions. Rock slope stability analysis, p giani, 1992 scribd.
Some classification systems, originally developed for underground excavations, have been used for slopes e. A block falling from a rock slope can move during the fall process. Developed by the makers of geo5, the easytouse free software ensures all the details of your project are accounted for while the robust input options allow for extremely precise geotechnical modeling. Despite the widespread availability of software programs using sophisticated numerical methods, the physical principles of slope engineering should not be forgotten. 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. This program is used to perform slope stability analysis embankments, earth cuts, anchored retaining structures, mse walls, etc. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. Rock slope stability analysis a variety of engineering activities require excavation of rock cuts. The analysis of irregular features present on the slope surface is. Rock slope stability assessment of limestone quarry. Rock slope stability analysis utilization of advanced. Changing slope geometry 1 natural slopes hard massif rocks.
Rock slope stability transportation research board. In this paper a numerical analysis of slope stability problems in blocky rock is presented with emphasis given to the various possible failure modes block sliding andor block tilting. Numerical analysis of rockfall hazard in open pit coal mines core. To download the file please copy this alternative short. The other is system reliability analysis for multiple failure modes of rock slope stability. Rock slope stability accurate structural data collection for use in quarry slope design by m. The limit equilibrium method is the most common approach for analyzing slope stability in both two and three dimensions. Of the software which is currently available from rocscience, half of all programs are either specifically dedicated to slope stability analysis ie. 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. The objective of the analysis was to evaluate and judge the condition and overall stability of the exposed rock, and identify where.
A phased rehabilitation programme will be implemented on the inactive dump. Deals with the methods of assessing the stability of rock slopes and the. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Rock slope stability analysis ubc eoas university of british. Slope stability modul for analytical solution for several analysis method bishop, spencer, janbu, sarma, itfm. Autofem analysis is the finite element analysis program for structural and mechanical engineering. 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. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. Conventional methods of rock slope analysis conventional methods of rock slope analysis can be generally broken down into kinematic and. Evelyn washington rock slope stability analysis by gian paolo. Stability analysis and failure mechanisms of open pit rock. 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. 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.
It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of. This determination is usually accomplished by means of stereographic analysis of the structural fabric and. Engineering geology of rock slopes in highway construction. The slip surface is considered as circular bishop, felleniuspetterson, janbu, morgensternprice or spencer methods or polygonal sarma, janbu, morgensternprice or spencer methods. Stability analysis of rock slopes using the finite element method. 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. It allows analysis of gravity walls with redi rock blocks, as well as calculation of mse walls with redi rock positive connection pc blocks and mirafi geogrids. Rock slope design manual page 21 section 200 geologic explorations, data collection and presentation 201 introduction exploration for a rock cut slope, which includes geologic explorations, data collection, and presentation of information, are vital to the design and construction of rock cut slopes. Rock slope stability analysis pdf free download epdf.
Xflr5 includes the xfoil program for foil analysis, and several 3d analysis methods for planes. 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. Autofem analysis provides easy to use yet strong design analysis tools for designers and. This was applied in the model by selecting all the boundary lines between the mudstone and weathered mudstone unshow the water table, to facilitate. Rock slope stability analysis hardcover january 1, 1992 by gian paolo giani author see all formats and editions hide other formats and editions. Rock slope stability analysis lec 1 linkedin slideshare. Rock slope stability analysis, p giani, 1992 free ebook download as pdf file.
Waste rock dump management and stability evaluation. Pdf in this paper a numerical analysis of slope stability problems in blocky rock is presented with emphasis. Simple failure mechanisms using uniform rigid rockblock motions are incorporated in the yield design kinematic approach. 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. Global stability with relict slip surface in this scenario, the presence of the relict slip surface was assumed. Dykes and sills are yet other geological structures that can be important in rock slope engineering works. Stability analysis and failure mechanisms of open pit rock slope yahdi azzuhry.
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. Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the stability of earth and rock fill dams, embankments. Using the measured experimental field data of two faults of a rock slope engineering, based on the large number of measured data analysis results of similar projects and rock style to determine the internal friction angle of the fault. The aim of this study is to investigate slope stability problems for heavily jointed karstic limestones in an aggregate quarry. Stability analysis techniques specific to rock slopes, other than highly fractured rock masses that can in effect be treated as soil, are described in chapter 12. Cruden and others published rock slope stability analysis find. 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. Rock slope stability analysis gian paol giani download.
Slope stability verification manual deep excavation llc page 11 e. A video file is a sequence of still images displayed at a constant rate fps. 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. Slope stability is the resistance of inclined surface to failure by. How do friction and cohesion work together to stabilize slopes. Determination of stable cut and fill slopes assessment of overall stability of retaining walls, including global and compound. Rock slope stability download ebook pdf, epub, tuebl, mobi. Pdf stability analysis of a rock slope in himalayas. Rock slope stability analysis by gian paolo giani pdf downloads torrent go. It also describes survey and measurement methods to model the behaviour of rock masses.
A major revision of the comprehensive textreference. Rock slope engineering civil engineering i am menglim. This chapter deals with rock slope stability, a subject that has shown remarkable. Stability analysis of a rock slope in himalayas 3 fig. Giani has translated and updated his own italian text writ. On civil projects, rock cuts must be safe from rock falls and largescale slope instability during both construction and operation. Maximum slope angle and height is controlled by the concentration and orientation of joints and by seepage. The stability of rock slopes is an important issue in both civil and mining engineering.
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. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. We illustrate the merits of the suggested approach on an example of a 10 m homogeneous rock slope with a 35. Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. For all but very weak rock materials, the analysis of rock slope stability is fundamentally a twopart process. Limestone quarries have turned into steep cliffs of bare rocks which threaten the safety of construction and have also negative influence on the aesthetics in. These analyses are often completed using slope stability charts and the dsara deterministic stability analysis for road access slope stability program.
Conventional methods of slope stability analysis can be divided into three groups. In civil engineering, projects include transportation systems such as highways and railways, dams for power production and water supply, and industrial and urban development. Analysis of rock slope stability using antislide pile. Therefore, these governing factors are very important for the stability analysis of the rock slopes in general and for plane mode of failure in particular. After simulating the fault zone and rqd values, the slope stability analysis is performed using the limit equilibrium method. Today, a vast range of slope stability analysis tools exist for both rock and mixed rocksoil slopes.
Xflr5 xflr5 includes the xfoil program for foil analysis, and several 3d analysis methods for planes. However the minimum constructive elements provided in the program do not allow the software to perform analysis for complex cases. Other readers will always be interested in your opinion of the books youve read. Slope stability analysis is performed to assess the safe design of a humanmade or natural slopes and the equilibrium conditions. Is there any free software available for slope stability. 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. Application note slope stability analysis worked example 4. Uncertainty quantification of structural and geotechnical. Tagasoft geotechnical software slope stability analysis.
A layout of the open pits and the waste dumps is shown in figure 1. Simslope stands for simplified slope stability analysis software. Slopes in mountainous regions require cohesion 8 undrained short term slope failure in clay. The degree of stability of a slope may be expressed through the factor of safety f, which is the ratio between a soil resistance measure and the associated applied load. Pdf rock slope stability assessment by using kinematic. One is reliability analysis for a single failure mode of rock slope stability. Reliability analysis stability of natural slopes the possible instability of natural slopes is a major geologic hazard in many regions of the world. Slope stability analysis and uncertainty quantification. The slope, which has a height of 10 m, is assumed loaded under gravity with a horizontal to vertical stress ratio of 1. Slope stability analysis slopew is the leading slope stability software for soil and rock slopes. How does the slope angle play a role in slope stability. The results of the analysis with critical failure surfaces through the rock mass show that the wall is stable and estimates the factor of safety to be 2. Application note slope stability analysis worked example. The spencer method of slope stability analysis was used to assess the stability of the wall using the same rock mass parameters as in the udec analysis.
Numerical simulation analysis, which contains the discrete element method 9, finite difference method 10, 11, and so on, can. Some factors contribute for driving forces whereas others add to the resisting forces. Written by worldleading geotechnical engineers who share almost 100 years of combined experience, slope stability and stabilization, second edition assembles the background information, theory, analytical methods, design and construction approaches, and practical examples necessary to carry out a complete slope stability project. Rock mass classification has been applied successfully in tunneling and underground mining q, rmr and mrmr systems. Slope stability analysis slope w is the leading slope stability software for soil and rock slopes. Slope w can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. The generalized hoekbrown parameters of the slope rock mass are provided in table 1. Stability analysis of jointed rock slope sciencedirect.
Antisliding stability analysis of saturated rock slope. Fundamentals and methods presents basic principles for the safe design of constructed or natural earth slopes. System reliability analysis of rock slope stability. At sikfors the followings point will be considered. The probabalistic sara stability analysis for road access program is still under development. Rock slope stability analysis, rotterdam, the netherlands. Slope stability analysis by the limit equilibrium method. Most slope stability analysis computer programs are based on the limit equilibrium concept for a two or threedimensional model.
The rocks present at the bridge site are heavily jointed. Galena is one of the worlds leading slope stability analysis packages now used in 74 countries, in some of the worlds largest mining operations. 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. Wyllie and mah 2004 and giani 1992 states rock material experienced a collapse as the rock mass.
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. Redirock wall freeware is a robust software tool for geotechnical engineers to design and analyze cross sections of redirock gravity walls. A grayscale digital image forms an array of pixels the size of which is described by the image resolution. Generally, reliability analysis of rock slope stability can be divided into two categories. 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.