軟弱砂岩力學行為與其岩象分析研究(II)
Date Issued
2003
Date
2003
Author(s)
黃燦輝
DOI
912211E002045
Abstract
In this research, the correlation of
mechanical behavior and microstructure (and
composition) of sandstone was accessed.
Sandstone samples were subjected to
petrographic analysis and nine parameters
were obtained. Based on the stepwise
multiple regression results, mathematical
functions were developed for estimating the
uniaxial compression strength (UCS) and the
ratio (R) of saturated strength to dry strength
from the petrographic and petrophysical
indexes. The research revealed that the major
influence factor of UCS is porosity and the
minor factor is grain area ratio (GAR).
Otherwise, the major influence factor of R is
GAR and the minor factor is porosity.
According to the results, a mechanical
classification of foothill sandstone was
proposed, and sandstones were classified into
eight kinds based on two index, porosity and
GAR.
Subjects
weak sandstone
petrographic factors
Publisher
臺北市：國立臺灣大學土木工程學系暨研究所
Type
report
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