›› 2009, Vol. 30 ›› Issue (7): 1993-1999.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Model test on stability of underwater rock slopes

JIANG Hai-xi1, SHEN Ming-rong1, 2, CHEN Shi3, XIAO Ru-cheng1   

  1. 1. School of Civil Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3.Shenyang Jianzhu University, Shenyang 110168, China
  • Received:2008-08-29 Online:2009-07-10 Published:2011-03-10

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Abstract:

With the construction of the Three Gorges Project, many natural and artificial rock slopes will be drown, then the stability of these slopes will reduce. The comprehensive factors of the water pressure, water leakage, water impaction and water corrosion will endanger the stability of underwater rock slope. Based on the model tests of the stability of soil slope and the analysis of the rock slope by the finite element method, the model tests of stability and damage mechanism of underwater rock slope are carried out, including the ascending and descending water level test and the wave impaction test. Some significant conclusions can be drawn from the model tests by measuring and analyzing the stress distributions with different structural angles (30° and 50°) slopes in the artificial wave tank. The rock slope can be divided into three regions in which the stress variation rule is the same. The results show that the stress concentration occurs to the slope toe, where failure begins, plastic zone develops upwards along the discontinuity, which is different from the downward failure mode happened to general slopes; it’s also concluded that the effect of the wave on the slope discontinuity decreases with the slope angle.

Key words: underwater rock slope, water tank, wave impaction, model test, stability analysis

CLC Number: 

  • TU 458+.4
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