›› 2006, Vol. 27 ›› Issue (1): 107-111.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Application of elasto-viscoplastic block element method to stability analysis of right abutment slope in Longtan Hydropower Project

ZHENG Hui-feng, WANG Wei-ming, CHEN Sheng-hong   

  1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
  • Received:2004-07-09 Online:2006-01-10 Published:2013-10-31

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Abstract: The principle of 3D elasto-viscoplastic block element method is introduced. This method exclusively takes deformation and strength property of the discontinuities into consideration, with the assumption that the rock blocks are rigid. The governing equation is deduced on the base of the equilibrium equation of block system, the compatible equation of displacement between the discontinuities and blocks and the elasto-viscoplastic constitutive equation of discontinuities. In right abutment slope of Longtan Hydropower Station, the geology is complicated, and the stability of blocks is a serious question. The 3D elasto-viscoplastic block element method is adopted to analyse the stability of the given blocks limited by the typical discontinuities, a series of safety factors of strength reservation under various work conditions are obtained. In the same time, the sensitivity analysis is performed aimed at such important factors influencing the stability of blocks as geometrical and mechanical parameters of discontinuities to provide proposals for engineering design. The application indicates that, as a new numerical method for hydraulic engineering, the elasto-viscoplastic block element method has the merits of validity, practicability and convenience for the stability and deformation analysis of block slope with complicated geology.

Key words: elasto-viscoplasticity, block element method, slope, stability analysis, sensitivity analysis

CLC Number: 

  • TU 457 O24
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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