(1. Department of Architectural Engineering，Logistical Engineering University，Chongqing 400041，China；
2. Chongqing Coal Design and Research Institute，Sino-coal International Engineering Group，Chongqing 400016，China)
Abstract：The calculation method of slope rock-soil pressure is discussed. The calculation method of slope lateral pressure in the “Technical code for building slope engineering”(GB50330–2002) is not reasonable because it does not take into account the factor of safety of slope stability. The calculation factor of safety in the imbalance thrust force method is not the true stability factor of safety in reinforced slope. Thus，a new slope thrust calculation method based on the strength reduction is presented. The slope lateral pressure and imbalance thrust force can be carried out through strength reduction. In accordance with this method，the stability factor of safety of reinforced slope is equal to the factor of safety of slope thrust calculation. Analysis and comparison of the imbalance thrust force method and strength reduction method are also discussed. Through a series of case studies，the applicability of the proposed method is clearly exhibited.
2010, Vol. 29 
