›› 2009, Vol. 30 ›› Issue (7): 2158-2162.

• Numerical Analysis • Previous Articles     Next Articles

Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration

WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke   

  1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China
  • Received:2008-07-21 Online:2009-07-10 Published:2011-03-10

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Abstract:

Pointed to being built highway slope, the slope displacement with the effect of bias tunnel shows to vary because of cutting slope, rainfall and construction. The combined stability between cutting slope and bias tunnel in mountainous area is analysed by the finite difference program FLAC3D. The combined stability are studied and the scope is ascertained in slope without cutting, reinforcement and rainfall, according to the displacement contours and the distribution character of the pore water pressure and shear failure region on base of plastic mechanics, rheologic mechanics and seepage mechanics with a modified viso-elastoplastic creep model. The comparison is carried out to reinforce slope, which the combined reinforcement is accepted as double antislide pile. The results show that the testing displacement data are consistent with numerical calculation. Simultaneously, the creep model is felicitous to characterize the rheological behaviour of rock and soil.

Key words: slope engineering, bias tunnel, finite difference method, seepage analysis, rheological analysis

CLC Number: 

  • TU 443
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