Computer aided analysis of rock slope stability springerlink. Analysis rock wedge program rock stability geo5 online help. Download geotechnical engineering software rocplane 3. The program recognises the discontinuity sets of a rock mass through hierarchical and nonhierarchical clustering procedures derived from the multivariate analysis. For specific slope, stability analysis can be performer by utilize slide software. The sliding resisting force f r is calculated by multiplying the wedge weight by tangent of the internal friction angle of soil, which is commonly used for the soil frictional interaction coefficient. Ggustability slope failure calculations ggusoftware. Each one of these rock mass classification systems uses different parameters. Slide2 most comprehensive 2d slope stability software. In 1916, petterson 1955 presented the stability analysis of the stigberg quay in gothenberg. Wedge failure is the soil mass movement due to external force. Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the. Assessment of slope instability and risk analysis of road.
Aug 16, 2019 claraw is a program for geotechnical slope stability analysis in two or three dimensions, using bishop, janbu, spencer and morgensternprice methods. Slide2 includes builtin finite element groundwater seepage analysis, probabilistic analysis, multiscenario modeling, and support design. It is also simply called newmarks analysis or sliding block method of slope stability analysis. Development of a probabilistic kinematic wedge sliding. A computer program is written in basic language on a microcomputer to carrying out kinematic analysis of rock slope stability. In this case, failure is assumes at a certain plane w sin. It is shown that with three or more contact planes, the safety factor may be significantly lower than that calculated from the wedge model, which provides an upper limit on stability.
Swedge 3d surface wedge analysis for slopes by rocscience. Dips now gives users the option to perform a set vs. In 1916, petterson 1955 presented the stability analysis of. In addition, the stability of the foundation with possible failure planes was investigated through analysis of the stress distribution characteristics, and then a comprehensive safety evaluation of the deep antislide stability of the project was made. A wide variety of slope stability software use the limit equilibrium concept with automatic critical slip surface determination. Today, every engineer and geologist has access to a personal computer that can undertake with relative ease complex numerical analyses of rock slopes. The twopart wedge is utilized to assess the potential for direct sliding along each reinforcement layer. An example of using ressa in complex geometry of reinforced. The newmarks sliding block analysis method is an engineering that calculates permanent displacements of soil slopes also embankments and dams during seismic loading. Slide2 can be used for all types of soil and rock slopes, embankments, earth dams, and retaining walls.
Which software is best suitable for rock slope stability. Slide2 is a powerful, userfriendly, 2d slope stability analysis program using limit equilibrium method. Analysis after bishop, janbu, using the general wedge or vertical slice method. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. Principle of slope stability analysis sliding will occur if the shear stress developed. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. A new slip surface type has been added to enable searching for wedgeshaped. Download geotechnical engineering software slide 8. Sliding block analysis active wedge central block passive wedge p p l a p cl fill sand soft.
Wedge failures result when rock masses slide along. The program is capable of handling plane sliding, wedge sliding and toppling of rock slopes. Spreadsheet design of mechanically stabilized earth walls. Landslide developed in rock mass usually has irregular shear plane. In the recent decades, several rock slope classification systems are presented by many researchers. Stereonet, dips, sv slope, rockplane, slide 2 slide 3, wedge swedge etc. Analysis method for the stability of the wedge loess collapse suppose wedge loess collapse occurs at the side slope surface with the slope angle of and slope height of figure 2, and suppose it moves along the two intersecting line of two structural planes, the trend and slope angle of two structural planes and are respectively. An example from tennessee concerning a block with a curved sliding surface is described and the factor of safety compared with the standard wedge analysis. Stability analysis geotechnical software geo5 fine. Unwedge underground wedge stability analysis by rocscience. In the internal compound stability analysis, when the slip arc travels through the wall face at a grid layer we can safely assume that the full connection capacity is available to resist the sliding. Loess collapse, wedge collapse, formation mechanism. Swedge is a quick, interactive, and easytouse analysis tool for evaluating the geometry and stability of surface wedges in rock slopes. Clustar is a program for computerised structural geology data collection and analysis.
Typical slope stability software can analyze the stability of generally layered soil slopes, embankments, earth cuts, and anchored sheeting structures. Technical note rock wedge stability analysis using system. Stability analyses of known failures can be used to help constrain parameter values such as friction angles, that can then be used in analyses of other slopes to help assess the potential of future rock slope failures. Discontinuities are geologic breaks such as joints, faults, bedding planes, foliation, and shear zones that can. The approach to evaluating sliding stability is one that uses the limit equilibrium method. Assessment of slope instability and risk analysis of road cut. Analysis method for the stability of the wedge loess collapse. Chapter 4 slope stability universiti teknologi malaysia. However no failure is likely even for the steepest slope faces if planned to cut in the dip direction range of 30o to 70o and o to 230o. The antislide pile program is used for design of pile walls stabilizing slope movement or increasing safety factor of the slope.
Jul 09, 2015 in performing kinematic wedge stability analysis, in practice, it is usually assumed that the wedge is a standard wedge the term is explained in the paper sliding along the line of intersection of the two discontinuity planes. This paper considers a wedge that slides along the most critical planar surface. Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. This analysis does not assume that the reinforced soil is a coherent mass but, rather, it considers the effects of reinforcement layers intersecting with the sliding surface. Evaluation of rock slope stability for yujian river dam site by kinematic and block theory analyse. Rocplane is an interactive software tool for assessing the stability of planar sliding wedges in rock slopes. The forces acting on the sliding wedge of soil are the weight w, normal.
Unwedge is a 3d stability analysis and visualization program for underground excavations in rock containing intersecting structural discontinuities. Commonly used together with dips, swedge is a key tool for the analysis of rock slope stability. The programs are capable of handling plane sliding, wedge sliding and toppling of rock slopes. A key feature of swedge is the probabilistic analysis capability. Plaxis, geo5 rock stability, stereonet, dips, sv slope, rockplane, slide 2 slide 3, wedge. In this paper we address the problem of stability of individual wedges in rock slopes. Swedge is a quick and simpletouse analysis tool for evaluating the geometry and stability of surface wedges in rock slopes.
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. An approach for calculating distributed factor of safety of the irregular shear plane was put forward in this paper. Rocplane is an interactive software tool for performing planar rock slope stability analysis and support design. However, bishops method then divides this term by a geometric equation called m m. Wedges are defined by intersecting discontinuity pl. Newmark analysis does not calculate actual displacement, but rather is an index value that can be used to provide an indication of the structures likelihood of failure during a seismic event. Under kinematic sensitivity, users now have an option to output the slope dip direction plot as a polar radial chart type. However, the grid layers at the face that are above and below the slip arc will also provide some resistance and increase stability. Slide3 is a 3d slope stability analysis software based on our bestselling.
Download geotechnical engineering software swedge 6. Kinematic analysis rock slope wedge failure similar to planar failures, seve ral conditions relating to the line of intersection must be met for wedge failure to be kinematically admissible. The presented method can obtain not only the detailed stability status at any grid node of a complex shear plane but also the global safety of the slope. Formation mechanism and stability analysis method for wedge. A few common softwares for rocksoil slope stability analysis are. Stability analysis of rock wedges with multiple sliding. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes.
Computer programs in slope stability computer program is written in basic language on a microcomputer to carrying out different analysis of slope stability. The computer output are presented in the form of tables and. Kinematic analysis is a method used to analyze the potential for the various modes of rock slope failures plane, wedge, toppling failures, that occur due to the presence of unfavorably oriented discontinuities figure 1. 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. Wedge stability model unstable wedges may be formed in rock slopes cut by at least two sets of discontinuities upon which sliding can occur hoek and bray, 1981. Kinematic slope stability analysis can be used to evaluate the potential for plane or dipslope failure, which is sliding along a bedrock discontinuity plane such as bedding, and wedge failure, which is sliding along an intersection line of two intersecting discontinuity planes such as bedding and a fault. Stability analysis is necessary particularly for structural components subjected to compression and bending. One of the most widely used methods for this purpose is the classification of the slope rock mass. The quantitative determination of the stability of slopes is necessary in a number of engineering activities, such as. Dips is designed for the interactive analysis of orientation based geological data.
This program is used to analyze the stability of rock slopes and walls for a specified type of failure, including a planar or polygonal slip surface or rock wedge. The kinematic analysisof the discontinuity data of the quarry sites was performed by using the dips software which showed the likelihood of wedge plane and toppling failures of the slopes. A useful technique for estimating the stability of rock slopes when the rigid wedge sliding type of failure is expected. The program is capable of many applications and is designed for both the novice user and for the accomplished user of stereographic projection who wishes to utilize more advanced tools in the analysis of geological data. Slide 2d limit equilibrium slope stability analysis software. Applications of the program are demonstrated by examples on opencast mine excavations and highway cuts.
Soils and foundations testing experience theory lesson 06 chapter 6 slope stability. Choice of analysis using either partial safety factors to din 1054. Each one of these rock mass classification systems uses. Swedge is a very simple to use program for evaluating the stability of surface wedges formed in rock slopes, defined by two intersecting discontinuity planes, the slope surface, and an optional tension crack. Analysis method for the stability of the wedge loess collapse suppose wedge loess collapse occurs at the side slope surface with the slope angle of and slope height of figure 2, and suppose it moves along the two intersecting line of two structural planes, the trend and slope angle of two structural planes and are respectively and.
Note, however, golder pointed out that francais was the first one to have presented such an analysis. Formation mechanism and stability analysis method for. Slope stability analysis slopew is the leading slope stability software for soil and rock slopes. Note, however, golder pointed out that francais was the. Claraw is a program for geotechnical slope stability analysis in two or three dimensions, using bishop, janbu, spencer and morgensternprice methods. The results reveal the mechanism and process of sliding due to weak structural planes and their deformations, and provide a reference for antislide stability analysis of gravity dams in. Slide is the most comprehensive slope stability analysis software available, complete with finite element groundwater seepage analysis, rapid drawdown, sensitivity and probabilistic analysis and support design. Assessment of the stability of natural and artificial rock slopes is an important topic in the rock mechanics sciences.
In some conditions it may be appropriate to include downstream passive wedge resistance as a further component of the resistance of sliding which can be mobilized. Rock slope stability analysis utilization of advanced. Analyzing the stability of earth structures is the oldest type of numerical analysis in geotechnical engineering. The idea of discretizing a potential sliding mass into slices was introduced early in the 20th century. Set analysis when considering wedge sliding or direct toppling failure modes in kinematic analysis. Principle of slope stability analysis sliding will occur if the shear stress developed exceeds the corresponding shear resistance of the soil.
Suppose wedge loess collapse occurs at the side slope surface with the slope angle of. Today, a vast range of slope stability analysis tools exist for both rock and mixed rocksoil slopes. Rocplane planar sliding stability analysis for rock slopes software. Generally, stability analysis is performed in the corresponding addon module for the relevant material for example in rfsteel ec3 for steel members. Rocplane 2d planar sliding slope stability analysis rocscience. Aug 18, 2015 computer programs in slope stability computer program is written in basic language on a microcomputer to carrying out different analysis of slope stability. Slide3 3d slope stability analysis software rocscience. Stability analysis of rock wedges with multiple sliding surfaces. Computer programs such as stable are typically utilized for this external stability check. In addition to performing kinematic analysis, dipanalyst 2. Swedge is a quick, interactive and simple to use analysis tool for evaluating the geometry and stability of surface wedges in rock slopes.
Stability analysis method for rock slope with an irregular. The procedure for static stability analysis is commonly known as culmanns analysis. Software tagged with wedge analysis total items found. Stability analysis of concrete gravity dam on complicated. Sliding of a structure on its foundation represents the most difficult aspect of a stability analysis, especially in those instances where the foundation is jointed, and where the strength properties vary throughout the foundation. What is the best software to analyse the slope stability researchgate. Swedge 3d surface wedge analysis for slopes software.
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