Particle Flow Simulation of Slope Instability and Failure

Article Preview

Abstract:

The instability and deformation process of an example of slope is simulated using PFC here. The relationship between macro and micro mechanics parameters is established in the numerical simulation, which determines the calculating parameters.The results of simulation and the example are consistent assessment, which illustrates the effectiveness of calculation, indicates that the PFC method can search the instability and sliding surface and shows the development process of performance failure. During the process, the chain of parallel bond force fractures gradually, but the range where parallel bond fractures is larger than the instable area because of the sliding friction, which improves our understanding of slope instability.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

162-167

Citation:

Online since:

September 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Xiuzhen Li, Jiming Kong , Hongyan Deng, et al. Analysis on characteristics and deformation failure mode of large-scale landslides induced by"5·12"Wenchuan earthquake[J]. Journal of Sichuan University: Engineering Science E-dition, 2009, 41( 3) : 72 - 77. (In Chinese).

Google Scholar

[2] Shanju Ruan, Fusheng ZHANG. Ecological problems and Countermeasures of the open pit mine[J]. Modern Mining, 2010, 8: 81-84. (In Chinese).

Google Scholar

[3] Jian ZHOU, Yong Chi. Simulating soil properties by particle flow code[J]. Acta Mechanica Solida Sinica, 2004, 25(4): 377-382. (In Chinese).

Google Scholar

[4] Jian Zhou, Jiaquan WANG, Yuan Zeng, Mincai JIA. Slope safety factor by methods of particle flow code strength reduction and gravity increase[J]. Rock and Soil Mechanics. 2009. 30(6): 1551-1554. (In Chinese).

Google Scholar

[5] SARMA S K. Stability analysis of embankments and slopes[J]. Journal of Geotechnical Engineering Division, ASCE, 1979, 105(12): 1511-1524.

DOI: 10.1061/ajgeb6.0000903

Google Scholar

[6] BISHOP A W. The use of the slip circle in the stability analysis of slopes[J]. Geotechnique, 1955, 5(1): 7-17.

Google Scholar

[7] CUNDALL P E, HART R G. Numerical modeling of discontinua[J]. Engineering Computations, 1992, 9(2): 101-113.

DOI: 10.1108/eb023851

Google Scholar

[8] Itasca Consulting Group. PFC2D user's manual (version3. 1)[M]. Minneapolis, Minnesota: Itasca Consulting Group, Inc, (2004).

Google Scholar

[9] Itasca Consulting Group. PFC2d theory and back-ground[M]. Minnesota, Minneapolis: Itasca Consulting Group, (2004).

Google Scholar

[10] Yuyong JIAO, Xiurun GE. Three-dimensional discrete element method based on static relaxation[J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(4): 451-456. (In Chinese).

Google Scholar

[11] BARDET J P, PROUBET J. Shear-band analysis in idealized granular material[J]. Journal of Engineering Mechanics, 1992, 118(8): 397-415.

DOI: 10.1061/(asce)0733-9399(1992)118:2(397)

Google Scholar

[12] BARDET J P, PROUBET J. A numerical investigation of structure of persistent shear bands in granular media[J]. Geotechnique, 1991, 41(4): 599-613.

DOI: 10.1680/geot.1991.41.4.599

Google Scholar

[13] Xuwen HE, Zhong LIU, Biao Liao, Cuicui WANG. Stability analysis of jointed rock slopes based on discrete element method[J]. Rock and Soil Mechanics2011, 32(7): 2199-2204. (In Chinese).

Google Scholar

[14] PFC2D (Particle Flow Code in 2 Dimensions), Version 1. 1. Itasca Consulting Group, Inc. 1999a, Minneapolis, MN: ICG.

Google Scholar