›› 2007, Vol. 28 ›› Issue (9): 1807-1810.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Effect of nonlinear strength of rockfill on slope stability of high earth-rock dam

CHEN Li-hong1, CHEN Zu-yu2   

  1. 1. School of Civil Engineering and Architecture, Beijing Jiatong University, Beijing 100044, China; 2. China Institute of Water Resources and Hydropower Research, Beijing 100044, China
  • Received:2005-09-14 Online:2007-09-10 Published:2013-10-15

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Abstract: Shear strength parameters have important effect on the slope stability of earth-rock dam. The Mohr failure envelope for rockfill material is obvious nonlinear particularly under the high stress linear and nonlinear shear strength theroies, value of the parameters, analysis method and safety factor criterion of nonlinear shear strength are discussed. The results of 171 sets of triaxial tests of rockfill reveal that the Duncan nonlinear strength theory is better than other models. The slope stability of 261.5 m high Nuozhadu rockfill dam is analyzed with three different shear strength criterions; the safety factors are almost equal and the positions of potential failure surfaces are also similar to each other. So the allowable safety factor base on linear criterion can be applied without any change when using nonlinear shear strength rules.

Key words: rockfill, stability analysis, nonlinearity, shear strength, earth-rock dam

CLC Number: 

  • TU641
  • 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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