Date of Graduation
Statler College of Engineering and Mineral Resources
Syd S. Peng.
The variation of the horizontal stress magnitude in bedded deposits in the eastern and Midwestern United States is analyzed with respect to the site depth and the rock elastic modulus using data from 40 sites. For the development of adequate regression models with the elastic modulus, zones with sufficiently uniform strains must be established. A low strain zone encompassing much of the eastern United States and a high strain zone encompassing a portion of southern West Virginia are delineated. In each zone, the regression models with the elastic modulus as the independent variable explains about 85 percent of the maximum horizontal stress variation. In general, the minimum horizontal stress is much less dependent on the elastic modulus. Though the site depths range from 275 to 2,300 ft., depth can explain only 15 percent of the maximum horizontal stress variation and is apparently not a significant independent factor.
Dolinar, Dennis R., "Analysis of the variation of horizontal stresses and strains in bedded deposits in the eastern and Midwestern United States" (2004). Graduate Theses, Dissertations, and Problem Reports. 1425.