›› 2006, Vol. 27 ›› Issue (S1): 1170-1174.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on softening rule of direct shear strength parameters of soil of slide zone in Three-Gorge Reservoir Region caused by water

LI Wei-Shu1,2，XIA Ye3，LE Jun-yi1,2   

  1. 1. Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute，Wuhan 430010, China；2.Chongqing Rock Foundation Research Center Yangtze River Scientific Research Institute，Chongqing 400014, China；3.Water Resources and Hydropower Bureau of Fuling District Chongqing, Fuling 408000, China
  • Received:2006-06-25 Published:2006-12-15

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Abstract: According to the contrastive in-situ direct shear test of the slide zone in the Three-gorges Reservoir Region in different conditions, changed rule of direct shear strength parameters and the value of c andφ which change along with water content about three kinds of soil of slide zone in different water contents conditions, such as clay, silty clay and the earth-rock aggregate, is researched. Experimental relationship between values of c andφ and water conyenton soils of slide zone is established based on plentiful data; and functionary mechanism of different characterized soil of soils zone caused by water is analyzed; then experimental formula of value of c and φ when water is sluiced or water content changes; finally softening degree of direct shear strength parameters caused by water content(water level changing) is quantified .

Key words: Three-Gorges Reservoir Region, soil of slide zone, values of c andφ, water content, softening degree

CLC Number: 

  • P 642.11+5
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