Inversion procedure of initial stress fields in rock masses based on genetic algorithm
LI Shou-ju
LIU Ying-xi
WANG Deng-gang
Abstract：Based on genetic algorithm, the nonlinear inversion algorithm was developed to identify the initial stress fields in the rock masses according to the observed deformation data after the excavation of tunnel. The non-uniqueness and non-convergence of the classical linear inversion algorithm were overcome by making use of the nonlinear inversion algorithm. The weight matrix and the terminal criterion were also built on the basis of the resolution ratio and precision of different observation equipment. The computational results make known that the inversion method proposed is global optimum and to have the property of protecting noises in the deformation observation.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 13-17 )