ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The mechanical properties of rock under high temperature and high geostress are thebasic and important information to assess the safety of underground engineering. Based on theenvironmental conditions of the west route of south-to-north water transfer project in westernChina, experiments are conducted for a sandstone. The experiments are conducted in stress path ofhydrostate, pure shear, and conventional triaxial compression at the temperature of 25°C, 50°C and70°C. The change of strength and average moduli of the rock with temperatures are studied. Bycycle loading and unloading tests, elastic and plastic deformation of the rock are decomposed, it isshown that the plastic deformations of the rock are clearly changed with temperature, while theelastic deformation of the rock seems to be unaffected by the temperature. Moreover, based on theassociated plastic flow rule, a constitutive law considering temperature is proposed for thesandstone
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.1151.pdf
