Accession Number:

AD0689578

Title:

STUDIES IN ROCK FRACTURE.

Descriptive Note:

Technical rept. no. 1, 1 May 68-30 Apr 69,

Corporate Author:

TEXAS A AND M UNIV COLLEGE STATION CENTER FOR TECTONOPHYSICS

Personal Author(s):

Report Date:

1969-06-15

Pagination or Media Count:

48.0

Abstract:

The study is to evaluate the influence of residual elastic strain on the orientations of tensile and shear fractures in rock. As a first step the three-dimensional state of residual elastic strain was measured by X-ray diffractometry in each of three quartzose sandstones. A prediction was then made concerning the orientations of fractures that would be induced in each rock by loading normal to bedding. The prediction was based upon a knowledge of the prestrain, the applied loads, the maximum tensile stress and Coulomb-Mohr criteria. Each prediction was then tested by experimentally fracturing the rocks. Author

Subject Categories:

  • Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE