一种岩体裂隙时效扩展的数值模拟方法及验证

doi:10.13722/j.cnki.jrme.2016.1352

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Abstract There are many micro-flaws in rock. In this paper，it is proposed that every cell in the numerical model includes a virtual micro-fissure without the thickness and with the normal distribution in dip angles and length. The growth rate and the mode of the micro-fissure are determined based on the fracture mechanics and growth mode of cracks. When the micro-fissures grow to the boundary of the cell，the cell fails. The failure cells coalesce together and form the failure surface in rock. Taking the Burgers model as an example，the numerical modelling method is incorporated into the software FLAC. It is applied to the intact rock and to the cracked rock with single or two pre-existing flaws under uniaxial and biaxial compression loads respectively. The simulated results agree well with that from laboratory tests，which validates the proposed method.

Key words： rock mechanics fissured rocks time-dependent crack growth numerical simulation

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	Articles by authors
	HUANG Da1
	2
	LIU Fuxing1
	YANG Chao3
	HUANG Runqiu4

Cite this article:

HUANG Da1,2,LIU Fuxing1, et al. A numerical simulation method for time-dependent growth of cracks in rocks and its validation[J]. , 2017, 36(7): 1623-1633.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.1352 OR http://www.rockmech.org/EN/Y2017/V36/I7/1623

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