Numerical Research on Anisotropy Mechanical Parameters of Fractured Rock Mass

Abstract:

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With ShapeMetriX3D rock non-contact measuring technology, structural planes’ distribution of MiaoGou iron mine slope is got. Then, the Mont-Carlo method is used to create equivalent fracture network, with that scale effects and anisotropic properties of rock mass are studied by RFPA2D, considering different scales and directions in statistical window. The results show that both deformation modulus and the strength of the rock mass’s REV are 2.5 m. Furthermore, the strength ratio of filler to rock (K) and the strength of the rock mass fit the logarithmic relationship in rough, while the elastic modulus ratio of filler to rock (M) and the strength of the rock mass fit the linear relationship in rough. The strength of no joints rock mass is much stronger than three times of the strength of jointed rock mass, but the rock mass elastic modulus of no joints is less than 1.6 times of the elastic modulus of jointed rock mass. The research results are directive and have reference value for the study of anisotropy mechanical parameters of rock mass engineering.

Info:

Periodical:

Advanced Materials Research (Volumes 524-527)

Edited by:

Jianguo Wu, Jie Yang, Nobukazu Nakagoshi, Xixi Lu and He Xu

Pages:

310-316

DOI:

10.4028/www.scientific.net/AMR.524-527.310

Citation:

P. F. Sun et al., "Numerical Research on Anisotropy Mechanical Parameters of Fractured Rock Mass", Advanced Materials Research, Vols. 524-527, pp. 310-316, 2012

Online since:

May 2012

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Price:

$35.00

[1] WANG Shu-ren, ZHOU Hong-bin, WU Chong-fu, et al. Research on rock mechanics parameters by using comprehensive evaluation method of rock quality grade-oriented, J. Rock and Soil Mechanics. 28 ( 2007) 202-206.

[2] YANG Tianhong, YU Qinglei, CHEN Shikuo. Rock mass structure digital recognition and hydro-mechanical parameters characterization of sandstone in Fangezhuang coal mine, J. Chinese Journal of Rock Mechanics and Engineering. 12 (2009) 2482-2488.

[3] YANG Jian-ping, CHEN Wei-zhong, DAI Yong-hao. Study of scale effect of deformation modulus of fractured rock mass— partⅠ: Finite element method. Chinese Journal of Rock Mechanics and Engineering. Aug, (2008) 1569-1575.

[4] HOEKE, DIEDERICHS M S. Empirical estimation of rock mass modulus, J. International Journal of Rock Mechanics and Mining Sciences. 43 (2006) 203-215.

DOI: 10.1016/j.ijrmms.2005.06.005

[5] Alireza Baghbanan, Lanru Jing. Hydraulic properties of fractured rock masses with correlated fracture length and aperture, J. International Journal of Rock Mechanics and Mining Sciences. 44 (2007) 704–719.

DOI: 10.1016/j.ijrmms.2006.11.001

[6] Pincus H J, Wipf R A. Effects of alteration and joint fillings on the mechanical behavior of rocks. International journal of rock mechanics and mining sciences, J. 05 (1973) 206-210.

[7] Startup Company from Austrian, ShapeMetriX3D service manual [R]. Shenyang:Earth Products China, Limited, (2008).

[8] Zhu W C, Tang C A, Yang T H, et al. Constitutive relationship of mesoscopic elements using in RFPA2D, J . Chinese Journal of Rock Mechanics and Engineering. 22 (2003) 243- 29.

[9] Liu Baochen, Zhang Jiasheng, et al. The rock size effect of compressive strength, J. Chinese Journal of Rock Mechanics and Engineering. (1998) 611-614.

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