Dear Debasis Barman,
First of all I would run an elastic analysis in order to have a look on
the stress distribution and to see in which domains and why a failure
can appear. Using this stress distribution I would consider one more
time my information on the initial in situ state of stresses and on the
validity domain of my rock properties estimation.
With a little amount of chance I can further adapt my structural design
(if needed) in order to avoid failure in the non-linear analysis.
That is a little bit generally but usually works.
Sincerely,
Radu
Debasis Barman wrote:
>dear friends,
> me a geotechnical engineer presently engaged in modelling of
>underground works is facing problem in modelling of underground powerhouse
>cavern(Approx.388.0m.below ground surface)provided with adequate supports
>(bolts,liners,prestressed cables). I have done the modeling in Phase-2
>software package (Rocscience software) in 17 excavation stages but the rock
>mass has yielded from 1st stage due to very rock mass properties and the
>displacement is very high. So I seek help from anybody interested to guide
>me for modeling in very poor rock. If interested I can send my supporting
>documents.
>
>Regards
>
>Debasis Barman
>
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>
>
--
Dr. Radu Schwab
Bundesanstalt für Wasserbau / Federal Waterways
Engineering and Research Institute
Kussmaulstr. 17
76187 Karlsruhe, Germany
Phone: +49 (0)721 9726-3810
URL: www.baw.de
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