The effect of sampling volume size on the apparent stiffness of jointed rock mass

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00359308" target="_blank" >RIV/68407700:21110/22:00359308 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.14311/APP.2022.34.0038" target="_blank" >https://doi.org/10.14311/APP.2022.34.0038</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/APP.2022.34.0038" target="_blank" >10.14311/APP.2022.34.0038</a>

Result language
angličtina
Original language name
The effect of sampling volume size on the apparent stiffness of jointed rock mass
Original language description
Overall mechanical properties of a jointed rock mass are strongly affected by discontinuities– fractures – that naturally occur in rocks. Stochastically-generated discrete fracture network (DFN)modeling, which uses a probabilistic approach to describe the spatial distribution of fractures, suchas position, size, or orientation, offers an explicit way to describe geometry of the fracture system.Many in-situ measurements and analyses presented in literature indicate that fractures’ sizes can beadequately represented by the power law probability distribution. The parallel plate model of individualfractures combined with an averaging technique makes it possible to estimate the overall compliance orstiffness of jointed rock mass (Oda et al. [1]). In the present study, a series of numerical simulationsof jointed rock mass modeled by DFN and Oda’s approach were conducted to analyze the effect ofdifferent sizes of the sampling volume on the overall elastic moduli. The results of the numerical studyshow that the variance as well as the average of the apparent stiffness decrease as the size of samplingelement grows.
Czech name
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Czech description
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Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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