Triaxial tests on salt rocks

Journal Article · Fri Mar 01 04:00:00 EST 1968 · Int. J. Rock Mech. Min. Sci.; (United States)

DOI:https://doi.org/10.1016/0148-9062(68)90034-X· OSTI ID:5885639

Hofer, K H; Thoma, K

Triaxial tests on various salt rocks were conducted, and Mohr's envelope of stress determined, as a preliminary measure before determining the necessary dimensions of pillars in salt mines and assessing the liability of the salt to possible rockburst. The stress-deformation characteristics of different salt rocks found to vary considerably, to the extent that from the aspect of mine design it is unwise to attribute general behavior to all salt deposits. Salt designated as carnallitite behaved substantially elastically and displayed brittle fracture under confining pressures up to at least 100 kp/sq cm. Rock salt, and hard salt, containing sylvite, rock salt, and anhydrite, only demonstrated brittle fracture under low confining pressure. At high confining pressure, fracture only occurred in these salts after considerable inelastic deformation. It appears that salt rocks of the carnallitic class have a greater liability to rock burst than the other salts tests.

• OSTI ID: 5885639
• Journal Information: Int. J. Rock Mech. Min. Sci.; (United States), Journal Name: Int. J. Rock Mech. Min. Sci.; (United States) Vol. 5:2; ISSN IJRMA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
024000 -- Petroleum-- Storage-- (-1989)
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
FRACTURE PROPERTIES
GEOLOGIC DEPOSITS
MECHANICAL PROPERTIES
SALT DEPOSITS
STORAGE
STORAGE FACILITIES
STRESSES
TESTING
UNDERGROUND STORAGE