Geomechanics and Engineering

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Assessment of slope stability using multiple regression analysis

  • Marrapu, Balendra M. (Department of Earthquake Engineering, Indian Institute of Technology Roorkee) ;
  • Jakka, Ravi S. (Department of Earthquake Engineering, Indian Institute of Technology Roorkee)
  • Received : 2016.07.30
  • Accepted : 2017.02.20
  • Published : 2017.08.25
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Abstract

Estimation of slope stability is a very important task in geotechnical engineering. However, its estimation using conventional and soft computing methods has several drawbacks. Use of conventional limit equilibrium methods for the evaluation of slope stability is very tedious and time consuming, while the use of soft computing approaches like Artificial Neural Networks and Fuzzy Logic are black box approaches. Multiple Regression (MR) analysis provides an alternative to conventional and soft computing methods, for the evaluation of slope stability. MR models provide a simplified equation, which can be used to calculate critical factor of safety of slopes without adopting any iterative procedure, thereby reducing the time and complexity involved in the evaluation of slope stability. In the present study, a multiple regression model has been developed and tested its accuracy in the estimation of slope stability using real field data. Here, two separate multiple regression models have been developed for dry and wet slopes. Further, the accuracy of these developed models have been compared and validated with respect to conventional limit equilibrium methods in terms of Mean Square Error (MSE) & Coefficient of determination ($R^2$). As the developed MR models here are not based on any region specific data and covers wide range of parametric variations, they can be directly applied to any real slopes.

Keywords

Acknowledgement

Supported by : Ministry of Human Resources Development (MHRD)

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