THERMAL SCIENCE
International Scientific Journal
LONG-TERM CREEP BEHAVIOR OF DEEP-BURIED MARBLE UNDER DIFFERENT CONFINING PRESSURES
ABSTRACT
To explore the long-term creep behavior of deep rock, the long-term tri-axial creep mechanical behavior of the rock under different confining pressures has been carried out. The results show that the instantaneous strain and creep strain of the high confining pressure specimen are significantly higher than that of the low confining pressure specimen under high deviatoric stress. By analyzing the failure characteristics of different confining pressure specimens, it is found that with the increase of the confining pressure, the creep failure characteristics of the marble transforms from tensile failure to shear failure. These research results have certain reference significance for the long-term stability analysis of the deep underground caverns.
KEYWORDS
PAPER SUBMITTED: 2018-06-15
PAPER REVISED: 2018-08-20
PAPER ACCEPTED: 2018-09-15
PUBLISHED ONLINE: 2019-03-31
THERMAL SCIENCE YEAR
2019, VOLUME
23, ISSUE
Supplement 3, PAGES [S653 - S660]
- Manchao H., Present situation and prospect of rock mechanics in deep mining engineering, Beijing: Science Press, 2004.
- Manchao H., et al., Coupled supporting mechanical principle of soft rock roadways and its application, Hydrogeology & Engineering Geology, (1998), 2, pp. 1-4.
- Jiang Y D., Zhao Y X., Liu W G., et al. Research on floor heave of roadway in deep mining, Chinese Journal of Rock Mechanics & Engineering, 14 (2004), 23, pp. 2396-2401
- Brantut N., et al., Time-dependent cracking and brittle creep in crustal rocks: A review, Journal of Structural Geology, 52 (2013), 5, pp. 17-43.
- Costin L S., Time-dependent damage and creep of brittle rock, Damage Mechanics & Continuum Modeling, (1984): pp. 25-38.
- Itô H., et al., A ten year creep experiment on small rock specimens, International Journal of Rock Mechanics & Mining Sciences & Geomechanics Abstracts, 24 (1987), 2, pp. 113-121.
- Martin R. J., et al., Creep and static fatigue of welded tuff from Yucca Mountain, Nevada, International Journal of Rock Mechanics & Mining Sciences, 34 (1997), 3-4, pp. 190-191.
- Yang C., et al., Temperature effects on creep of tuff and its time—Dependent damage analysis, International Journal of Rock Mechanics & Mining Sciences, 34 (1997), 3-4, pp. 383-384.
- Fujii Y., et al., Circumferential strain behavior during creep tests of brittle rocks, International Journal of Rock Mechanics & Mining Sciences, 36(1999), 3, pp. 323-337.
- Maranini E., et al., A non-associated viscoplastic model for the behaviour of granite in triaxial compression, Mechanics of Materials, 33 (2001), 5, pp. 283-293.
- Ma L., et al., An experimental study on creep of welded tuff, International Journal of Rock Mechanics & Mining Sciences, 43 (2006), 2, pp. 282-291.
- Hashiba K., et al., Time-Dependent Behaviors of Granite: Loading-Rate Dependence, Creep, and Relaxation, Rock Mechanics & Rock Engineering, 49(2016), 7, pp. 2569-2580.
- Fabre G., et al., Creep and time-dependent damage in argillaceous rocks, International Journal of Rock Mechanics & Mining Sciences, 43 (2006), 6, pp. 950-960.
- Tsai L. S., et al., Time-dependent deformation behaviors of weak sandstones, International Journal of Rock Mechanics & Mining Sciences, 45(2008), 2, pp. 144-154.
- Li Y., et al., Time-dependent tests on intact rocks in uniaxial compression, International Journal of Rock Mechanics & Mining Sciences, 37(2000), 3, pp. 467-475.
- Nadimi S., et al., Triaxial creep tests and back analysis of time-dependent behavior of Siah Bisheh cavern by 3-Dimensional distinct element method, Tunneling and Underground Space Technology, 26 (2011), 1, pp. 155-162.
