节理岩体裂隙扩展过程一种新改进的弹脆性模拟方法及应用

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Abstract By improving the original constitutive relation of FLAC3D to the elastic-brittle model，as well as using superfine elements division，the failure process of the double-cracked rock specimen under uniaxial and biaxial compression are simulated and studied. The numerical results match well with the testing results obtained by early studies. This method is also used to simulate the failure process of rocks that contain four cracks (in two groups) of different inclinations or a single 3D crack；meanwhile，the numerical results of 3D crack propagation also match well with the testing results obtained by early studies. Finally，the model is applied to studying the crack propagation process and stability of a slope project；and it has a good effect.

Key words： rock mechanics jointed rock mass crack propagation elastic-brittle model numerical simulation slope stability

Received: 10 April 2012

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http://www.rockmech.org/EN/Y2012/V31/I10/2088

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