Identification Of Mechanical Parameters In
Underground Structures
Author(s)
P. Procházka & J. Trčková
Abstract
Before a design of underground struct.ures, the ma.teria1 parameters lmve
to be known from "in situ" measurement. geological maps and laboratory
experiments. Some of t,hese methods are very expensive a.nd some very
unreliable. Therefore, during tjhe construction of untlerground works, more
accurate information on values of material parameters can be obtained using
back analysis. Then, the numerical models can be improved in such a way
that the designers can simulate various situation in the next steps of the
construction of undergromld works.
Thr back analysis presented in t,llis paper start,s with i~ieasured movemcnt,
s of the tunnel face, and t,he design (free) para~net~ers serve t>he eigew
?;t,r.ains. The starting numrrical model is Desai's Distinct Stlate (kmcept,
which call describe almost every phenolne~ia oc
Keywords
Related Book
Other papers in this volume
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