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RocScience Slope Stability Modeling Software RocSciences Slide is a program that was used to evaluate Odell Dam slope stability conditions. Slide is a 2D limit equilibrium slope stability program that was used for evaluating the factor of safety regarding failure by sliding of an embankment or slope for the dam. The program computes results in terms of factors of safety and slope circle radii and origins, as well as global stability failure could occur. For this project, the third cross sectional area was chosen out of the seven cross sections. Cross section three was chosen since it is the best representation of all the cross sections because of its characteristics.
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Spanish to english slang words. Figure 5 above is the surveying data retrieved using a total station and the AutoCAD software. For the RocScience Slide program, the parameters needed were the cohesion of 130 psf, the friction angle of 25.1 degrees, the unsaturated unit weight is 106 pcf and the saturated unit weight is 120 pcf. Figure 1: Overview of all AutoCAD generated cross-sections. Figure 6, shown above, is a visual representation of the computed result from Slide showing various factors of safety (F.S.) which represent the stability of the soil. The square box above shows the minimum surface factor of safety when the results are calculated.
The computation method used to determine the slip surfaces is the Bishop Method, which is designed for circular slip surfaces such as in cross section 3. The Heel to Toe analysis means that the slopes will be analyzed using the highest elevation on the right which extends to the lower left elevation on the cross section.
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The water line is necessary to determine how the soils will react when pressurized under water load conditions. Higher than 1.5 is considered safe as a standard of practice. Adobe photoshop cs6 free download windows 10. For the minimum slip surface is 3.238.
Rocscience examine2d v8 rocscience examine3d v4.0994 rocscience phase2 8.005 rocscience rocdata v4.014 rocscience rocfall v4.039 rocscience roclab v1 rocscience rocplane v2.029 rocscience rocsupport v3 rocscience slide v6.005 rocscience swedge v4.080 rocscience unwedge v3.005 rocsciense settle3d v2.016. Rocscience Slide v7.0. Slide is the most comprehensive slope stability analysis software available, complete with finite element groundwater seepage analysis,.
Figure 2: Results from a Heel to Toe Analysis The analysis was for Figure 7, shown above, was conducted under the same process as in the Heel to Toe cross section, the only difference within this analysis is that the cross section was analyzed from Toe to Heel. In this figure, for a downstream slope failure, the F.S. [This space was intentionally left blank] Figure 3: Results from a Toe to Heel Analysis Hydrologic Analysis A hydrologic analysis is being conducted to determine the adequacy of the spillway located on the southern side of Odell Dam.
Due to the size of the watershed, the Rational Method is insufficient for determining the amount of water runoff generated, therefore the analysis will be conducted using the Soil Conservation Service (SCS) methods. This hydrologic analysis will include: a watershed delineation, rainfall intensities, curve numbers, time of concentrations, reservoir storage, and a PondPack hydrologic modeling software analysis. Watershed Delineation The watershed was delineated, by using an ArcGIS topographic map. This map was then imported into AutoCAD, where lines could be drawn to follow the contours that separate our watershed from others. The overall area of the watershed was approximated to 19.8 square miles.
The watershed delineation can be found in Appendix G. The use of only one watershed was done to obtain a conservative estimation of the water runoff generated. The breakdown of the watershed into sub basins would produce a higher time of concentration, resulting in a lower peak flow. [9] Figure 4: Odell Dam's Contributing Watershed. Rainfall Intensities Rainfall Intensities were found using National Oceanic and Atmospheric Administration (NOAA) Atlas 14. The intensities were established by inputting the exact coordinates of the project site into the database. Refer to Appendix H for the NOAA Atlas 14 rainfall intensities.
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[10] Curve Numbers The curve number considers multiple characteristics of the terrain within a given watershed, such as the soil group, land use, and treatment of the land. The value assigned to a curve number is indicative of the runoff coefficients of the land as well as the infiltration rate of the soil. Saint seiya anime chronological order. Larger curve numbers result in more water runoff generated. Pre-burn and 80% post-burn, meaning 80% of the watershed has been burned, curve numbers were researched for this analysis.