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Numerical Model for Slope Stability Assessment with Considering Hydrological Processes & Vegetation Influences

Hajializadeh, Donya | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40793 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Ashtiyani Attayi, Behzad
  7. Abstract:
  8. Landslides are one of the most serious natural hazards in terms of victims and economic impact. This instability not only causes direct loss and causality but also intensifies instability’s compensation because of casualty in major transportation systems such as highway networks and connection networks such as electrical wires. Iran with mountainous nature and seismically active areas provides potential for broad instability. Thus determining the treatment of slope in response of time and different condition has significant inportance. The essential analysis for controlling instability is analysis of the slope resistance which results safety factor. This analysis is for assessment of existing conditions and solution which comprises the safety as be used. Estimating the accurate safety factor is become possible by choosing suitable parameters. Therefore in this project, by combination of the careful selection of the first-rate components, try to get better definition of the slope behavior for assessing less error in safety factor. There is just one program for the simulation of changes in pore water pressures by considering the mechanical and hydrological effect of vegetation which considers their role in maintaining slope stability .(CHASM (Anderson 1980)). In present program the explicit finite difference method used in Anderson model is replaced by implicit finite difference which yields exquisite results. On the other hand there are 3 choices for modeling the vegetation effect. The program code, originally developed in a MATLAB environment, has been implemented in the Microsoft Windows environment with the addition of a graphical user-interface (GUI) to enable more seamless and user-friendly operation. There are 16 slopes with different condition have been solved for verification which is compared with the Anderson design charts and show complete exactness
  9. Keywords:
  10. Hydrology ; Modeling ; Slope Stability ; Richards Equation ; Vegetation

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