›› 2007, Vol. 28 ›› Issue (S1): 281-285.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of saturated and unsaturated seepage of cracked expansive soil

ZHENG Shao-he1, YAO Hai-lin2, GE Xiu-run2   

  1. 1. Shanghai Research Institute of Building Sciences, Shanghai 200032, China; 2. Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2007-05-26 Online:2007-10-25 Published:2014-03-28

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Abstract: Stability of cracked expansive soil slopes subjected to rainfall infiltration is closely related to seepage distribution. The impact of accumulated water depth on seepage is numerically analyzed. The results show that the impact of accumulated water depth on seepage distribution is very small and the assumption that accumulated water depth is zero can be accepted in seepage analysis. Based on different dimension of cracks and their different permeability of expansive soils, a new method of seepage analysis subjected to rainfall infiltration considering cracks system is presented, which shows that cracking behavior not only has a great effect on seepage distribution, but also much better simulates seepage distribution change with time than before. And the results obtained from engineering cases can reasonably explain the mechanics of shallow landslide of expansive soil slopes.

Key words: cracked expansive soil, saturated and unsaturated seepage, rainfall infiltration, matrix suction, soil-water characteristic curve

CLC Number: 

  • TU 443
  • 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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