Master of Science (MS)
First Advisor's Name
Michael R. Gross
First Advisor's Committee Title
Second Advisor's Name
Third Advisor's Name
Date of Defense
Joints as opening-mode fractures play important roles as indicators of tectonic stress fields and as pathways for underground fluid flow. This thesis analytically investigates the relationships among cross joint geometry, orientations and ratios of remote principal stresses, and fluid pressure. Results show that main trends of cross joints are perpendicular to the least far field stresses during cross joint formation, and cross joint paths can be used to determine relative magnitudes of remote principal stresses. Based on the theoretical derivation, cross joint geometries are grouped into five main categories: curving-parallel, curving-perpendicular, quasi-curving-parallel, quasi-curving-perpendicular and non-curving geometries. By introducing the concepts of effective stress and effective remote principal stress ratio, it is demonstrated that connectivity between cross joints and the pre-existing joint is improved for joints that form under relatively high pore pressures.
Bai, Taixu, "Theoretical analysis of cross joint geometries and their classification" (1996). FIU Electronic Theses and Dissertations. 1370.
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