›› 2007, Vol. 28 ›› Issue (5): 965-970.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of influence of unsaturated seepage on stability of landslide

ZHANG Guang-cheng, TANG Hui-ming, HU Bin   

  1. China University of Geosciences, Wuhan 430074, China
  • Received:2005-06-14 Online:2007-05-10 Published:2013-09-10

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Abstract: The stability of landslide is affected by the drawdown of reservoir water level. A polynomial constrained optimized model for soil-water characteristic curve and a new restrict function for overflow surface are put forward. Based on these, a saturated-unsaturated seepage program is edited with APDL in ANSYS. Zhaoshuling Landslide is taken as an example, firstly the physical model is established through Nuclear Magnetic Resonance and bore data，and then the seepage fields are simulated when the Yangtze River water level falls from 175 m to 145 m at different speeds, the stability of the landslide at different times is also analyzed. The result shows that the bigger the fall speed is, the least the minimum value of the stability coefficient is, and the earlier the value comes.

Key words: saturated－unsaturated seepage, matrix suction, soil-water characteristic curve, ANSYS, APDL

CLC Number: 

  • TV 233
  • 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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