The Effect of Confining Pressures on Rock Fracturing under Dynamic Loads

Zhe Ming Zhu; Zhi Rong Zhou; Yong Qian Li; Ye Xue Li

doi:10.4028/www.scientific.net/AMR.320.255

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 320The Effect of Confining Pressures on Rock...

The Effect of Confining Pressures on Rock Fracturing under Dynamic Loads

Abstract:

In order to investigate the effect of confining pressures on rock dynamic fracturing under dynamic loads, a 2D finite difference dynamic numerical model for a circular rock sample with a single centralized borehole is developed. According to the material properties and loading conditions, shock and linear equations of state are combined and applied to the rock material in this model. A modified principal stress failure criterion is applied to determining material status. It is shown that as the increase of mining depth, the extent of blasting-induced damage of rock increases significantly.

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Periodical:

Advanced Materials Research (Volume 320)

Pages:

255-258

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.320.255

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Online since:

August 2011

Authors:

Zhe Ming Zhu, Zhi Rong Zhou, Yong Qian Li, Ye Xue Li

Keywords:

Blasting Load, Confining Stress, Crack, Numerical Simulation, Rock Fracturing

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References

[1] Z.M. Zhu, B. Mohanty, H. Xie, Numerical investigation of blasting-induced crack initiation and propagation in rocks, Int. J. Rock Mech. Min. Sci. 44 (2007) 412-424.

DOI: 10.1016/j.ijrmms.2006.09.002

Google Scholar

[2] Z.M. Zhu, H. Xie, B. Mohanty, Numerical investigation of blasting-induced damage in cylindrical rocks, Int. J. Rock Mech. Min. Sci. 45 (2008) 111-121.

DOI: 10.1016/j.ijrmms.2007.04.012

Google Scholar

[3] Z.M. Zhu, Numerical prediction of crater blasting and bench blasting, Int. J. Rock Mech. Min. Sci. 46 (2009) 1088-1096.

DOI: 10.1016/j.ijrmms.2009.05.009

Google Scholar

[4] Z.T. Zhou, Z.M. Zhu, X.X. Jin, H. Tang, Numerical Prediction of Rock Fracturing During the Process of Excavation, Int. J. of Geotechnical Earthquake Engineering 1 (2010) 12-23.

DOI: 10.4018/jgee.2010070102

Google Scholar

[5] Z.M. Zhu, C. Wang, M. Wang, Y.X. Li, Y.Q. Li, Numerical Predication on the Fracture Characteristics of Rocks with Defects under Blasting Loads, Journal of Sichuan University, 43 (2011) 1-8.

Google Scholar

[6] Z.M. Zhu. The Response of Defects containing Water under Dynamic Loads, Advanced Materials Research, 225-226 (2011) 933-936.

DOI: 10.4028/www.scientific.net/amr.225-226.933

Google Scholar

[7] Y.J. Ning, J. Yang, X.M. An, G.W. Ma, Modelling rock fracturing and blast-induced rock mass failure via advanced discretisation within the discontinuous deformation analysis framework, Computers and Geotechnics 38 (2011) 40-49.

DOI: 10.1016/j.compgeo.2010.09.003

Google Scholar

[8] S.P. Marsh, LASL shock hugoniot data, University of California Press, Berkeley, (1980).

Google Scholar

[9] F. Dai, S. Huang, K. Xia, Z. Tan, Some fundamental issues in dynamic compression and tension tests of rocks using sSplit hopkinson pressure bar. Rock Mech. Rock Eng. 43 (2010) 657-666.

DOI: 10.1007/s00603-010-0091-8

Google Scholar