›› 2010, Vol. 31 ›› Issue (11): 3585-3593.

• Numerical Analysis • Previous Articles     Next Articles

Quasi-static analysis of seismic stability of anchored rock slope under surcharge and water pressure conditions

LUO Qiang 1,2，LI Liang1，ZHAO Lian-heng1   

  1. 1. School of Civil and Architectural Engineering, Central South University, Changsha 410075, China; 2. Department of Communications of Guizhou Province, Guiyang 550003, China
  • Received:2009-06-18 Online:2010-11-10 Published:2010-11-24

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Abstract:

Based on the limit equilibrium method, a rounded analysis for rock slope have been undertaken, in which several influencing factors such as water pressure, surcharge, seismic loading and anchoring force have been taken into account. The safety factor expressions for rock slope stability subjected to the condition of many factors have been deduced. Parametric analysis has shown that depth of water in tension crack, groundwater seepage force, blocked outflow suture, seismic loading, surcharge have a disadvantage effect on the rock slope stability against sliding; but anchorage effect of anchor blots has a beneficial effect on the rock slope stability against sliding. Parametric analysis has also shown that depth of water in tension crack, blocked outflow suture, horizontal seismic loading have a disadvantage effect on the rock slope stability against overturning; but surcharge, anchorage effect of anchor blots and vertical seismic loading have a advantageous effect on the rock slope stability against overturning. Finally, the project proposals have been put forward according to the engineering practice.

Key words: rock slope, seismic stability analysis, limit equilibrium method, quasi-static analysis, water pressure, anchorage, surcharge, factor of safety

CLC Number: 

  • TU 431
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