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Optimal estimation of in‐situ ground stresses from displacement measurements
Author(s) -
Feng Z. L.,
Lewis R. W.
Publication year - 1987
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610110407
Subject(s) - displacement (psychology) , stability (learning theory) , in situ , constant (computer programming) , set (abstract data type) , structural engineering , engineering , geotechnical engineering , computer science , psychology , physics , machine learning , meteorology , psychotherapist , programming language
This paper presents a study on the optimal estimation of initial in‐situ stresses, in which the in‐situ stresses may be constant or linearly changing along a co‐ordinate axis, from a set of relative measurements between adjacent measuring points utilized for monitoring the stability of tunnels. Displacements occurring before installation of measuring devices can be taken into account. The approach may be used for a variety of models used to simulate the ground media through which the tunnels are being excavated and has the advantage of being easy to implement on the computer and having both good precision and calculation stability. Finally, an analysis is carried out on the stability of the algorithm and computational time for different numerical examples.