Junyan Mu1, *, Bohu Zhang1, Qinglong Luo2
1 School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China
2 Sichuan Metallurgical Geological Prospecting Bureau 604 Battalion, Chengdu 628017, China
The deformation modulus of a rock mass is among the parameters that can best represent the mechanical behavior of a rock mass. To study the effect of joint roughness on deformation modulus of rock masses, several numerical tests are conducted in this article.The following conclusions can be drawn from the results. (a) the value of JRC(joint roughness coefficient) can affect the deformation modulus; (b) when JRC is less than eleven, the deformation modulus increases with the increase of JRC, and decreases with the decrease of JRC when JRC is greater than eleven; and (c) when JRC is equal to zero (flat joints), the deformation modulus is smaller than others.
rock mass, deformation modulus, numerical tests, joint roughness coefficient
Junyan Mu, Bohu Zhang, Qinglong Luo. Study on the effect of joint roughness for deformation modulus of rock masses based on numerical tests. Academic Journal of Architecture and Geotechnical Engineering (2020) Vol. 2, Issue 2: 8-12. https://doi.org/10.25236/AJAGE.020202.
 A. Palmström and R. Singh (2001). The deformation modulus of rock masses -comparisons between in situ tests and indirect estimates. Tunnelling and Underground Space Technology, vol.16, p.115-131.
 L.W. Morland (1974). Continuum model of regularly jointed mediums. Journal of Geophysical Research, vol.79, no.2, p.357-362.
 C.M. Gerrard (1982). Elastic models of rock masses having one, two and three sets of joints. International Journal of Rock Mechanics and Mining Sciencs & Geomechanics Abstract, vol.19, p.15-23.
 A.F. Fossum (1985). Effective elastic properties for a randomly jointed rock mass. International Journal of Rock Mechanics and Mining Sciencs & Geomechanics Abstract, vol.22, no.6, p.467-470.
 C. Li (2001). A method for graphically presenting the deformation modulus of jointed rock masses. Rock Mechanics and Rock Engineering, vol.34, no.1, p.67-75.
 H.P. XIE (1995). Fractal description of rock joints. Chinese Journal of Geotechnical Engineering, vol.17, no.1, p.18-23.