›› 2005, Vol. 26 ›› Issue (5): 769-773.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on mechanism of slope instability due to reservoir water level rise

LIU Cai-hua, CHEN Cong-xin, FENG Xia-ting   

  1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2004-06-10 Online:2005-05-10 Published:2013-12-17

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Abstract: Reservoir water level rise may result in instability of a slope. Qianjiangping landslide, situated on the Three Geoges, Zigui County, Hubei Province, is a right example. Effects of reservoir water level on slope stability include the action of interspace water pressure and the weakening of strength parameters of slide interface. Using Mohr-Coulomb strength principle, effect of interspace water pressure on soil stresses is analyzed. After slope soil is soaked, the Mohr circle diminishes and moves to the left apart from the strength curve. Results of slope stability analysis show that slope stability firstly decreases and then increases due to interspace water pressure when reservoir water level rises from the foot to the top of the slope. It is also pointed out that the slope will probably lose its stability because of the disadvantageous action of interspace water pressure during the initial stage of water level rising and the weakening of strength parameters of slide interface.

Key words: reservoir water level, slopes, mechanism of instability

CLC Number: 

  • TU 454
  • 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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