Nov 01, 2001 a major revision of the comprehensive textreference 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. Analyses, shear strengths, testing, stability methods, and stabilization dr. Conventional methods of slope stability analysis can be divided into three groups. The factor of safety equations are written in the same form, recognizing whether moment and or force. They have not been typeset and the text may change before final. Abramson hatch mott macdonald millburn, new jersey thomas s. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Improved finite elementbased limit equilibrium method for slope. The stability of a slope, either natural or artificial, is of considenble importance.
This engineer manual em provides guidance for analyzing the static stability of slopes of earth and rockfill dams, slopes of other types of embankments, excavated slopes, and natural slopes in soil and soft rock. Huang and jia 42 discussed the utilization of the finite element method with the shear strength reduction technique approach in the stability. Drainage methods deep wells, vertical drains, subhorizontal drains, drainage galleries, interceptor trench drains and relief trenches. Comparison of slope stability methods of analysis1 received october 12, 1976 accepted april 4, 1977 the papercompares six methods ofslicescommonly sed for slopestability analysis. A major revision of the comprehensive textreference. Concepts associated with the method of slices are not difficult to grasp and the techniques are. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Instability of natural and built in slopes has been a serious geotechnical challenge, particularly. Slope stability and stabilization methods abramson, lee w. Griffiths1,f asce, jinsong huang2,m asce and gordon a. Topographic effects on threedimensional slope stability for. 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. Analysis of slope stability using finite element method mohd yusri bin suratman this thesis is submitted to faculty of engineering, universiti malaysia sarawak in fulfillment of the requirements for the award of the degree of bachelor of engineering with honours civil engineering 2009. Slope stability analysis by the limit equilibrium method books.
Chapter 10 slope stability analysis nysdot geotechnical page 109 january 21, 2014 design manual 10. In 1916, petterson 1955 presented the stability analysis of the stigberg quay in gothenberg. Comparison of slope stability methods of analysis1 soilvision. The research presented in this thesis focuses on investigating and quantifying the effects of soil variability and vegetation on the stability of natural slopes. Koh editor, mechanics of landslides and slope stability. The methods that had optimal performance for the analyzed conditions were the simplified bishop, the simplified janbu and the bishop methods. The infinite slope solution is also an exact solution, the methods of slices which we examine later are approximate solutions. Slope stability evaluations by le and fe methods iii instability of natural and built. To predict the stability of a natural slope more accurately, especially the marginally stable one, the effects of soil variability and vegetation needs to be taken into account. Improved finite elementbased limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application. A new derivation for the morgensternprice method is. In this paper, a projectionbased method is proposed which splits the impedance into a stable and an unstable part by projecting on an. Factors affecting slope stability of landfill covers. Fhwa nhi06088 6 slope stability soils and foundations volume i 6 3 december 2006 6.
They are certainly major factors in cut slope stability and in. To overcome its shortcomings, this paper combined hoekbrown criterion and limit equilibrium method and proposed an equation for calculating the safety factor of slope. Slope stability united states army corps of engineers. The idea of discretizing a potential sliding mass into slices was introduced early in the 20th century. Presently, the theory and software for twodimensional slope stability are rather mature, but there are still some important and new findings which will be discussed in this chapter. In recognition of his years of guidance and support as a mentor and friend to geotechnical specialists in the northwest, we dedicate these volumes, a summary of what we have. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. Stabilization of the slopes change of the slope geometry to decrease the driving forces or to increase the resisting forces, control of surface water infiltration to reduce. This method of slope stability analysis is not widely used since it has been found that plane surfaces of sliding are observed only with very steep slopes, and for. For example, limit equilibrium methods still remain the most commonly adopted solution method in rock slope engineering, even though most failures involve.
Equilibrium methods of slope stability analysis all involve assumptions because the number of equilibrium equations available is smaller than the number of unknowns involved. Most slope stability analysis computer programs are based on the limit equilibrium concept for a twoor threedimensional model. If moment equilibrium is not satisfied with that 32 slope stability analysis methods specific factor of safety based on the force equilibrium, repeat the step with the next factor of safety in checking the moment equilibrium. Numerical analysis of slope stability based on the gravity. Using shear strength reduction method for 2d and 3d slope stability analysis thamer yacoub, ph. Comparison of slope reliability methods of analysis. The purpose of this thesis is to find a method that is suitable to analyze slopes. The application of dynamic programming to slope stability analysis. The method of handling the interslice forces differen tiates the normal force equations. Stark1, member, asce abstract study of several field case histories showed that the difference between two and threedimensional factors of safety against slope failure is most pronounced in cases that. How do friction and cohesion work together to stabilize slopes. Numerical analysis of slope stability based on the gravity increase method l. Pdf numerical methods in analysis of slope stability. To help change this situation this paper will compare the methods performance to those of the most widely used limitequilibrium methods on a broad range of slope cases.
Slope stability ano stabilization methods second edition lee w. Erik eberhardt university of british columbia geological engineeringearth and ocean sciences, ubc, 6339 stores rd. Using a unified approach to address a medley of engineering and construction problems, slope stability analysis and stabilization. The accuracy of equilibrium methods of slope stability. Reducing the thickness of the soil above the geomembrane improves the stability of covers which have reinforcement. Slope stability and stabilization methods, 2nd edition wiley. Comparison of slope reliability methods of analysis d. Using shear strength reduction method for 2d and 3d slope. Rock slope stability analysis utilization of advanced.
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. Within the framework of limit equilibrium methods of stability analysis, no restriction need be placed at the outset upon the shape of the possible slip surface. Slope stability analysis using limit equilibrium method in. Lianga a school of civil and hydraulic engineering, dalian university of technology, dalian 116024, pr china bcenter for rock instability and seismicity research, northeastern university, shenyang 16, pr china article info. Slope stability analysis by the limit equilibrium method. Spatial stability for the monolithic and sequential methods with. Detailed pieziometric data at multiple locations and depths within and below the slope will likely be needed. The primary goal of a slope stability analysis, is to determine the potential slip surface which has. Fenton3,m asce 1professor, colorado school of mines, 1610 illinois street, golden, co 80401.
Stability analysis of rock slopes using the finite element method. 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. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. Analyzing the stability of earth structures is the oldest type of numerical analysis in geotechnical engineering.
This paper aims an overview on various methods of slope stability on the basis of assumptions, factor of safety. An overview on methods for slope stability analysis. Slope stability 101 basic concepts and not for final design purposes. The paper compares six methods of slices commonly used for slope stability analysis. The aim here is to obtain all available information with regard to the site and its geological environments. Theory of slope stability portland state university. The factor of safety equations are written in the same form, recognizing whether moment and or force equilibrium is explicitly satisfied. Pdf slope stability analysis methods danial salajegheh. A technique for the calculation of slope stability based upon the assumption of a plane surface of failure through the toe of the slope has been proposed by culmann see taylor, 1948. Threedimensional slope stability methods in geotechnical practice timothy d. The dynamic programming method for a slope stability. Slope stability evaluations by limit equilibrium and finite. Fredlund golder associates, saskatoon, canada abstract slope stability analyses have been performed using various software packages on a routine basis in geotechnical.
Includes recommendations for analysis, design practice, design charts, tables, and more. The simplest problem of slope stability that we can analyze, and that we should understand in detail because it is so basic, is that of the stability of the socalled infinite slope. In slope stability analysis, the limit equilibrium method is usually used to calculate the safety factor of slope based on mohrcoulomb criterion. Rock slope stability analysis ubc eoas university of british. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. New methods and insight, second edition provides helpful practical advice and design resources for the practicing engineer. 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. From mathematic analysis and numerical tests, the piecewise constant finite volume method for flow provides stability at the early time for the. Provision of reinforcement in the soil above the geomembrane, and use of textured geomembrane, improves the stability of slope. The wave equation page for piling online books on all aspects of soil mechanics, foundations and marine construction free general engineering and geotechnical software and much more. In the vast majority of slope stability analysis cases, geotechnical engineers primarily conduct design based on calculated factor of safety values. Accepted manuscript manuscripts that have been selected for publication.
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