Rock mass stability analysis based on contact mode using DDA

L. Zheng, G. Chen, Y. Zhang, Y. Li, H. Zhang

Research output: Contribution to conferencePaper

Abstract

This paper firstly introduces the process in contact calculation between blocks of Discontinuous Deformation Analysis (DDA) and validates its precision. The contact mode judged after Open-Close iteration is also accurate since the contact force calculation is based on the rigorous equilibrium equations. Therefore, the detachment between two neighboring blocks along joints could be identified quickly and accurately. Based on this, we propose a new approach to search the failure surface in rock mass automatically based on contact mode information. At last, combining with Shear Strength Reduction method (SSR), DDA has been used to analyze the stability of model rock slope using the new proposed failure criterion. Comparing with analytical solution, it is shown that our new approach is applicable and accurate.

Original languageEnglish
Pages161-167
Number of pages7
Publication statusPublished - Oct 1 2013
Event11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013 - Fukuoka, Japan
Duration: Aug 27 2013Aug 29 2013

Other

Other11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013
CountryJapan
CityFukuoka
Period8/27/138/29/13

Fingerprint

Stability Analysis
Rocks
Contact
Shear strength
Shear Strength
Failure Criterion
Contact Force
Reduction Method
Slope
Analytical Solution
Iteration
Model

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation

Cite this

Zheng, L., Chen, G., Zhang, Y., Li, Y., & Zhang, H. (2013). Rock mass stability analysis based on contact mode using DDA. 161-167. Paper presented at 11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013, Fukuoka, Japan.

Rock mass stability analysis based on contact mode using DDA. / Zheng, L.; Chen, G.; Zhang, Y.; Li, Y.; Zhang, H.

2013. 161-167 Paper presented at 11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013, Fukuoka, Japan.

Research output: Contribution to conferencePaper

Zheng, L, Chen, G, Zhang, Y, Li, Y & Zhang, H 2013, 'Rock mass stability analysis based on contact mode using DDA' Paper presented at 11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013, Fukuoka, Japan, 8/27/13 - 8/29/13, pp. 161-167.
Zheng L, Chen G, Zhang Y, Li Y, Zhang H. Rock mass stability analysis based on contact mode using DDA. 2013. Paper presented at 11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013, Fukuoka, Japan.
Zheng, L. ; Chen, G. ; Zhang, Y. ; Li, Y. ; Zhang, H. / Rock mass stability analysis based on contact mode using DDA. Paper presented at 11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013, Fukuoka, Japan.7 p.
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