mean set plane orientations) and consider major discrete structures such as shear zones which may have a dominant effect on stability due to low friction angles and inherent persistence. NOTE: You can alternatively toggle on/off the Display of Kinematic Analysis by selecting the Kinematic Analysis option in the toolbar. The Legend provides results as a percentage of all poles in the file ( 26/303), and as a percentage of poles for individual sets ( 25/90 for Set 1). This results in a Slip Limit Plane which defines the critical zone for Flexural Toppling. If the Dips application window is not already maximized, maximize it now, so that the full screen is available for viewing the model. This will require a steepening of the local bench slopes, as indicated in the figure above. It is rare to see pure examples of these failure modes, particularly with the toppling analysis, which may exhibit complex behaviours involving sliding, toppling, rotating etc. Iggy Garcia LIVE Episode 163 3D5D or R2D2?!? Im an obsessive learner who spends time reading, writing, producing and hosting Iggy LIVE and WithInsightsRadio.com My biggest passion is creating community through drumming, dance, song and sacred ceremonies from my homeland and other indigenous teachings. Planes cannot topple if they cannot slide with respect to one another. The Dip angle of the Slip Limit Plane is derived from the folowing: Slip Limit Dip = Pit Slope Dip Friction Angle = 45 30 = 15 degrees. Kinematic Analysis of rock slope failure modes using stereonets is an extremely useful and easy to understand analysis tool which allows you to quickly evaluate potential failure modes. The Failure Mode, various Kinematic Properties (i.e., Slope Dip, Slope Dip Direction, Friction Angle, Lateral Limit), and Visibility settings can also be set in the Kinematic Analysis Sidebar. Founded in 1996, Rocscience is a world leader in developing 2D and 3D software for civil, mining, and geotechnical engineers. This is left as an optional exercise to experiment with, for more information see the Direct Toppling Kinematic Analysis topic. For Set 1 the toppling probability is nearly 30 percent. and Harrison, J.P. 1997. We will be traveling to Peru: Ancient Land of Mystery.Click Here for info about our trip to Machu Picchu & The Jungle. The key elements of Flexural Toppling Kinematic Analysis using pole vectors are: These are discussed below. The Critical Zone for Flexural Toppling is the highlighted region between the Slip Limit Plane, Lateral Limits, and the stereonet perimeter. The Slip Limit Dip Direction is equal to that of the Slope face ( 135 degrees). Direct Toppling involves a different set of assumptions in comparison to Flexural Toppling. Engineering Rock Mechanics An Introduction to the Principles, Pergamon Press. My family immigrated to the USA in the late 60s. Any poles that plot within the critical zone for Flexural Toppling represent a toppling risk. Introduction to Rock Mechanics (Chapter 8), Toronto: John Wiley, pp 254-287. Copyright 2000-2022 IGNACIO GARCIA, LLC.All rights reserved Web master Iggy Garciamandriotti@yahoo.com Columbus, Ohio Last modified May, 2021 Hosted by GVO, USC TITLE 42 CHAPTER 21B 2000BB1 USC TITLE 42 CHAPTER 21C 2000CC IRS PUBLICATION 517. The two primary features of Direct Toppling are: Direct Toppling analysis is somewhat more complicated than the other analysis modes and is based on the method described in Hudson and Harrison [2]. The Lateral Limits for Flexural Toppling have the same purpose as described for Planar Sliding. This concludes the tutorial. However keep in mind the following. Come and explore the metaphysical and holistic worlds through Urban Suburban Shamanism/Medicine Man Series. In this case there is a significant risk of Flexural Toppling. Thats why we constantly develop and refine our programs to make expert solutions that work for you. Real slopes may exhibit more than one failure mode. Remember that a near horizontal pole represents a near vertical plane. You should see the Kinematic Analysis overlay for Flexural Toppling as shown below.
Based on kinematic considerations and frictional properties of joint planes, it is possible to perform stability analyses such as toppling, Planar Sliding and Wedge Sliding on a stereonet. It is important to look beyond statistical results (e.g.
The current plan is to extend the pit down at an overall angle of 45 degrees. Goodman, R.E. water pressure) of kinematically safe slopes. For more information, please visit: Even if a Kinematic Analysis indicates risk of failure, this does not necessarily mean that failure will occur, since factors other than kinematics and friction angle may work to increase stability (e.g. You should see the Stereonet Plot View shown in the following figure. Lets examine the Flexural Toppling failure mode. You are now ready for the next tutorial, Tutorial 09 - Kinematic Analysis (Planar Sliding). RocFall3 | Your new tool for 3D assessment of slopes at risk for rockfalls. This analysis is based on the Flexural Toppling analysis described by Goodman [1]. Goodman [1] states that for slip to occur, the bedding normal must be inclined less steeply than a line inclined at an angle equivalent to the Friction Angle above the slope. Or from the Start menu, select Programs > Rocscience > Dips > Dips. Im an entrepreneur, writer, radio host and an optimist dedicated to helping others to find their passion on their path in life. NOTE: If the example file has been previously opened and saved, the screen may show a different view or plot, since Dips saves the most recent view state when a file is saved). We are but a speck on the timeline of life, but a powerful speck we are! Iggy Garcia. Kiddie scoop: I was born in Lima Peru and raised in Columbus, Ohio yes, Im a Buckeye fan (O-H!) 1980. 11 - Oriented Core & Rock Mass Classification, Tutorial 09 - Kinematic Analysis (Planar Sliding), Kinematic Analysis of Toppling Failure Mode, Slip Limit Plane (based on Slope Dip and Friction Angle). Any poles in this region represent a risk of Flexural Toppling. My PassionHere is a clip of me speaking & podcasting CLICK HERE! If youre curious about my background and how I came to do what I do, you can visit my about page. A summary of the Flexural Toppling results is displayed in the Legend. A third joint set of near horizontal planes act as release planes (or sliding planes) for the discrete blocks. Two joint sets intersect to form intersection lines dipping into the slope which can form discrete blocks. Set the Failure Mode = Direct Toppling in the Kinematic Analysis Sidebar. The rock face above the current floor of the existing pit has a dip of 45 degrees and a dip direction of 135 degrees. In this episode I will speak about our destiny and how to be spiritual in hard times. The finished product of this tutorial can be found in the Tutorial 08 Kinematic Analysis (Flexural Toppling).dips8 and Tutorial 08 Kinematic Analysis (Direct Toppling).dips8 files, located in the Examples > Tutorials folder in your Dips installation folder. Conversely, other factors may decrease stability (e.g. This tutorial demonstrates how to perform stability analyses under Flexural Toppling failure mode using the Kinematic Analysis option in Dips. They define the lateral extents of the critical zone with respect to the Slope Dip Direction. Iggy Garcia LIVE | Episode 162 Spiritual Tune Up. The great circle of the Slope Plane is displayed, and labeled Pit Slope with orientation Dip / Dip Direction = 45 / 135. Welcome to Iggy Garcia, The Naked Shaman Podcast, where amazing things happen.
For this example we have increased the limits from 20 degrees (used in the Planar Sliding example) to 30 degrees as suggested by Goodman. Hudson, J.A. IggyGarcia.com & WithInsightsRadio.com, For more information, please visit: IggyGarcia.com & WithInsightsRadio.com, My guest is intuitive empath AnnMarie Luna Buswell, Iggy Garcia LIVE Episode 171 | An appointment with destiny, Iggy Garcia Live Episode 170 | The Half Way Point of 2022, Iggy Garcia TV Episode 169 | Phillip Cloudpiler Landis & Jonathan Wellamotkin Landis, Iggy Garcia LIVE Episode 167 My guest is AnnMarie Luna Buswell, Iggy Garcia LIVE Episode 166 The Animal Realm, Iggy Garcia LIVE Episode 165 The Return, Iggy Garcia LIVE Episode 164 Recap of 2021. If you have not already done so, run Dips by double-clicking on the Dips icon in your installation folder. If you do not see the plot below, then use the Sidebar Plot Options to view pole vectors and contours on the stereonet. More detailed analysis including safety factor calculation can be carried out with the Rocscience programs. joint cohesion, joint persistence etc).
The local benches are to be separated by an up-dip distance of 16 m. The bench roadways are 4 m wide.
As engineers ourselves, we know the importance of having reliable and easy-to-use software. There is one more Kinematic Analysis Toppling failure mode that we have not yet discussed; Direct Toppling. The data has been collected by a geologist working on a single rock face above the first bench in a young open pit mine. The tutorial is a continuation from Tutorial 07 - Feature Analysis (which uses the example file Examppit.dips8) . It was amazing and challenging growing up in two different worlds and learning to navigate and merging two different cultures into my life, but I must say the world is my playground and I have fun on Mother Earth. To save us some time, this tutorial will use the Tutorial 07 Feature Analysis.dips8 file which already has the required pit slope plane (User Plane) and . The analyses presented here are just a starting point for more detailed analysis and should always be accompanied by a more thorough field analysis in cases where a risk of failure is indicated.
Based on kinematic considerations and frictional properties of joint planes, it is possible to perform stability analyses such as toppling, Planar Sliding and Wedge Sliding on a stereonet. It is important to look beyond statistical results (e.g.
The current plan is to extend the pit down at an overall angle of 45 degrees. Goodman, R.E. water pressure) of kinematically safe slopes. For more information, please visit: Even if a Kinematic Analysis indicates risk of failure, this does not necessarily mean that failure will occur, since factors other than kinematics and friction angle may work to increase stability (e.g. You should see the Stereonet Plot View shown in the following figure. Lets examine the Flexural Toppling failure mode. You are now ready for the next tutorial, Tutorial 09 - Kinematic Analysis (Planar Sliding). RocFall3 | Your new tool for 3D assessment of slopes at risk for rockfalls. This analysis is based on the Flexural Toppling analysis described by Goodman [1]. Goodman [1] states that for slip to occur, the bedding normal must be inclined less steeply than a line inclined at an angle equivalent to the Friction Angle above the slope. Or from the Start menu, select Programs > Rocscience > Dips > Dips. Im an entrepreneur, writer, radio host and an optimist dedicated to helping others to find their passion on their path in life. NOTE: If the example file has been previously opened and saved, the screen may show a different view or plot, since Dips saves the most recent view state when a file is saved). We are but a speck on the timeline of life, but a powerful speck we are! Iggy Garcia. Kiddie scoop: I was born in Lima Peru and raised in Columbus, Ohio yes, Im a Buckeye fan (O-H!) 1980. 11 - Oriented Core & Rock Mass Classification, Tutorial 09 - Kinematic Analysis (Planar Sliding), Kinematic Analysis of Toppling Failure Mode, Slip Limit Plane (based on Slope Dip and Friction Angle). Any poles in this region represent a risk of Flexural Toppling. My PassionHere is a clip of me speaking & podcasting CLICK HERE! If youre curious about my background and how I came to do what I do, you can visit my about page. A summary of the Flexural Toppling results is displayed in the Legend. A third joint set of near horizontal planes act as release planes (or sliding planes) for the discrete blocks. Two joint sets intersect to form intersection lines dipping into the slope which can form discrete blocks. Set the Failure Mode = Direct Toppling in the Kinematic Analysis Sidebar. The rock face above the current floor of the existing pit has a dip of 45 degrees and a dip direction of 135 degrees. In this episode I will speak about our destiny and how to be spiritual in hard times. The finished product of this tutorial can be found in the Tutorial 08 Kinematic Analysis (Flexural Toppling).dips8 and Tutorial 08 Kinematic Analysis (Direct Toppling).dips8 files, located in the Examples > Tutorials folder in your Dips installation folder. Conversely, other factors may decrease stability (e.g. This tutorial demonstrates how to perform stability analyses under Flexural Toppling failure mode using the Kinematic Analysis option in Dips. They define the lateral extents of the critical zone with respect to the Slope Dip Direction. Iggy Garcia LIVE | Episode 162 Spiritual Tune Up. The great circle of the Slope Plane is displayed, and labeled Pit Slope with orientation Dip / Dip Direction = 45 / 135. Welcome to Iggy Garcia, The Naked Shaman Podcast, where amazing things happen.
For this example we have increased the limits from 20 degrees (used in the Planar Sliding example) to 30 degrees as suggested by Goodman. Hudson, J.A. IggyGarcia.com & WithInsightsRadio.com, For more information, please visit: IggyGarcia.com & WithInsightsRadio.com, My guest is intuitive empath AnnMarie Luna Buswell, Iggy Garcia LIVE Episode 171 | An appointment with destiny, Iggy Garcia Live Episode 170 | The Half Way Point of 2022, Iggy Garcia TV Episode 169 | Phillip Cloudpiler Landis & Jonathan Wellamotkin Landis, Iggy Garcia LIVE Episode 167 My guest is AnnMarie Luna Buswell, Iggy Garcia LIVE Episode 166 The Animal Realm, Iggy Garcia LIVE Episode 165 The Return, Iggy Garcia LIVE Episode 164 Recap of 2021. If you have not already done so, run Dips by double-clicking on the Dips icon in your installation folder. If you do not see the plot below, then use the Sidebar Plot Options to view pole vectors and contours on the stereonet. More detailed analysis including safety factor calculation can be carried out with the Rocscience programs. joint cohesion, joint persistence etc).
The local benches are to be separated by an up-dip distance of 16 m. The bench roadways are 4 m wide.
As engineers ourselves, we know the importance of having reliable and easy-to-use software. There is one more Kinematic Analysis Toppling failure mode that we have not yet discussed; Direct Toppling. The data has been collected by a geologist working on a single rock face above the first bench in a young open pit mine. The tutorial is a continuation from Tutorial 07 - Feature Analysis (which uses the example file Examppit.dips8) . It was amazing and challenging growing up in two different worlds and learning to navigate and merging two different cultures into my life, but I must say the world is my playground and I have fun on Mother Earth. To save us some time, this tutorial will use the Tutorial 07 Feature Analysis.dips8 file which already has the required pit slope plane (User Plane) and . The analyses presented here are just a starting point for more detailed analysis and should always be accompanied by a more thorough field analysis in cases where a risk of failure is indicated.