›› 2010, Vol. 31 ›› Issue (S1): 23-27.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on boundary condition effect and material porosity sensitivity for slope model

LIU Dong-yan1, ZHENG Zhi-ming 1, 2, HOU Long 1, 3   

  1. 1. College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. Chongqing Highway Bureau, Chongqing 401147, China; 3.Colorado University of Mines, Denver 80401, USA
  • Received:2010-04-23 Online:2010-08-10 Published:2010-09-09

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Abstract:

Using a new apparatus which was fabricated by ourself, some research works on the stability of slope model under different boundary conditions effect were finished. Based on some associated results, the relationship between landslide start degree and boundary condition effect can be got. From the relationship, it can see clearly that the degree will decrease as the slope’s thickness increases and it will keep at a constant degree value when the thickness is relative big; namely, the influence induced by boundary condition effect can be ignored at that time. At the same time, one theoretical method was involved to quantify and confirm this relationship. In addition, the comparison between boundary condition effect and porosity indicates that the porosity is a more sensitive factor as to the range in variation of landslide start degree than the boundary condition effect. Based on these results, we can take some modification work for this experimental apparatus and get an optimization resolution for latter tests.

Key words: slope model, landslide start degree, boundary condition effect, porosity, range in variation

CLC Number: 

  • TU 411
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