Journal
GEOTECHNICAL AND GEOLOGICAL ENGINEERING
Volume 31, Issue 1, Pages 249-253Publisher
SPRINGER
DOI: 10.1007/s10706-012-9584-4
Keywords
Elastic modulus; Jointed rock mass; Multivariate adaptive regression spline (MARS); Artificial neural networks (ANNs)
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This article presents multivariate adaptive regression spline (MARS) for determination of elastic modulus (E-j) of jointed rock mass. MARS is a technique to estimate general functions of high-dimensional arguments given sparse data. It is a nonlinear and non-parametric regression methodology. The input variables of model are joint frequency (J(n)), joint inclination parameter (n), joint roughness parameter (r), confining pressure (sigma(3)) and elastic modulus (E-i) of intact rock. The developed MARS gives an equation for determination of Ej of jointed rock mass. The results from the developed MARS model have been compared with those of artificial neural networks (ANNs) using average absolute error. The developed MARS gives a robust model for determination of Ej of jointed rock mass.
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