›› 2008, Vol. 29 ›› Issue (2): 386-391.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of soil slope’s transient stability under intensive rainfall

WU Chang-fu1, ZHU Xiang-rong2, YIN Xiao-tao3, LIU Xue-mei4   

  1. 1. College of Architecture & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; 2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027,China; 3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 4. Hangzhou Exploration and Surveying Design Institute, Hangzhou 310012, China
  • Received:2006-01-27 Online:2008-02-11 Published:2013-07-10

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Abstract: Utilizing actual rainfall data, transient stability of soil slope is computed and analyzed under condition of one peak of rainfall and 8 different kinds of two peak rainfall schemes at different time intervals according to theory of unsaturated soil mechanics. Moreover, the effect of time and space about stability of slope is explored under the infiltration of rainfall into the slope body. In addition, soil hydraulic property changed by rainfall is presented too. It is found that the time effected once by rainfall is about 12 day, the minimum of safety factor appears after 0.5 day of rainfall, that the most dangerous situations of the soil slope effected by different interval time of twice rainfall happen 0.3-0.8 day later than that of once rainfall, the lasting time effected by rainfall being kept, and that the physical and mechanics characteristics of the soil, the most dangerous slip surface of the slope and its relative safety factor is effected and vibrated with water motion in different parts of the slope.

Key words: soil slope, rainfall, unsaturated soil, safety factor, stability, suction matrix

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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