Weitere Artikel dieser Ausgabe durch Wischen aufrufen
Translated from Problemy Prochnosti, No. 1, pp. 231 – 239, January – February, 2015.
The triaxial testing for irregular or unfilled rock joints was conducted on the rock mechanics test system (MTS). A series of axial failure stresses under different confining pressures applied to the same specimen was continuously acquired on MTS. The corresponding normal and shear stresses acting on the rock joint plane were calculated in terms of LEFM. The Mohr–Coulomb (MC) shear strength parameters of each specimen could be determined by linear regression analysis. Thirteen specimens were taken from the dam site drill rock cores of a hydropower station. The scatter of points plotted for all test results in the normal and shear stress space exhibits obvious nonlinearity. Test results show that it would be more convenient to describe the shear strength of rock joints in the nonlinear form. The comparison and discussion of three function fittings proved that the well-known Barton criterion was more appropriate for describing the shear strength of rock joints.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
F. D. Patton, “Multiple modes of shear failure in rock,” in: Proc. of the 1st Congr. of International Society of Rock Mechanics (Lisbon, Portugal, 1966), Vol. 1, pp. 509–513.
H. Bock, “A simple failure criterion for rough joints and compound shear surfaces,” Eng. Geol., 14, No. 4, 241–254 (1979). CrossRef
E. Hoek, “Strength of jointed rock masses,” Geotechnique, 33, No. 3, 187–223 (1983). CrossRef
I. W. Johnston and T. S. K. Lam, “Shear behavior of regular triangular concrete/rock joints-analysis,” J. Geotech. Eng., 115, No. 5, 711–727 (1989). CrossRef
M. Bahaaddini, G. Sharrock, and B. K. Hebblewhite, “Numerical direct shear tests to model the shear behaviour of rock joints,” Comput. Geotech., 51, 101–115 (2013). CrossRef
M. Singh and B. Singh, “Modified Mohr–Coulomb criterion for nonlinear triaxial and polyaxial strength of jointed rocks,” Int. J. Rock Mech. Min. Sci., 51, 43–52 (2012). CrossRef
N. Barton, “Shear strength criteria for rock, rock joints, rockfill and rock masses: Problems and some solutions,” J. Rock Mech. Geotech. Eng., 5, No. 4, 249–261 (2013). CrossRef
L. Y. Zhang, “Estimating the strength of jointed rock masses,” Rock Mech. Rock Eng., 43, No. 4, 391–402 (2010). CrossRef
N. Barton, “Review of a new shear strength criterion for rock joints,” Eng. Geol., 7, No. 4, 287–332 (1973). CrossRef
G. Barla, F. Robotti, and L. Vai, “Revisiting large size direct shear testing of rock mass foundations,” in: Proc. of the 6th Int. Conf. on Dam Engineering (Lisbon, Portugal, 2011), pp. 179–188.
D. R. Wines and P. A. Lilly, “Estimates of rock joint shear strength in part of the Fimiston open pit operation in Western Australia,” Int. J. Rock Mech. Min. Sci., 40, No. 6, 929–937 (2003). CrossRef
S. R. Hencher and L. Richards, “Laboratory direct shear testing of rock discontinuities,” Ground Eng., 22, 24–31 (1989).
E. Hoek and J. W. Bray, Rock Slope Engineering, the 3rd edition, Institute of Mining and Metallurgy, London (1981).
J. Muralha, G. Grasselli, B. Tatone, et al., “ISRM suggested method for laboratory determination of the shear strength of rock joints, revised version,” Rock Mech. Rock Eng., 47, No. 1, 291–302 (2014). CrossRef
E. T. Brown (Ed), Rock Characterization, Testing and Monitoring – ISRM Suggested Methods, Pergamon Press, Oxford (1981), pp. 129–140.
G. Barla, M. Barla, and M. E. Martinotti, “Development of a new direct shear testing apparatus,” Rock Mech. Rock Eng., 43, 117–122 (2010). CrossRef
B. S. A. Tatone and G. Grasselli, “An investigation of discontinuity roughness scale dependency using high-resolution surface measurements,” Rock Mech. Rock Eng., 46, No. 4, 657–681 (2013). CrossRef
G. Grasselli, “Manuel Rocha medal recipient shear strength of rock joints based on quantified surface description,” Rock Mech. Rock Eng., 39, No. 4, 295–314 (2006). CrossRef
C. C. Xia, Z. C. Tang, W. M. Xiao, and Y. L. Song, “New peak shear strength criterion of rock joints based on quantified surface description,” Rock Mech. Rock Eng., 47, No. 2, 387–400 (2014). CrossRef
M. K. Jafari, K. A. Hosseini, F. Pellet, et al., “Evaluation of shear strength of rock joints subjected to cyclic loading,” Soil Dyn. Earthq. Eng., 23, No. 7, 619–630 (2003). CrossRef
K. Kovari and A. Tisa, “Multiple failure state and strain controlled triaxial tests,” Rock Mech., 7, 17–13 (1975). CrossRef
M. R. Vergara, P. Kudella, and T. Triantafyllidis, “Large scale tests on jointed and bedded rocks under multi-stage triaxial compression and direct shear,” Rock Mech. Rock Eng., 47, No. 2, 541–559 (2014).
- Nonlinearity of the Rock Joint Shear Strength
Y. F. Wei
W. X. Fu
D. X. Nie
- Springer US
in-adhesives, MKVS, Hellmich GmbH/© Hellmich GmbH, Neuer Inhalt/© momius | stock.adobe.com