Excavation-process-stability control of soil similar slope by cement-silicate double solution grouting

Excavation-process-stability control of high soil slope by cement-silicate double solution grouting is a new reinforcement measure. By means of gel time control, the composite body with certain shear strength and rigidity is formed and the mechanical parameters of the soil affected by grouting are changed after cement-silicate double solution grouting in slope toe, which will play an important role in process-stability of the slope. In order to study the excavation-process-stability control mechanism, the elastic-plastic model was created with FEM and the comparison with the schemes uncontrolled and controlled by cement-silicate double solution grouting was made. The results show that a part of downslide strength is carried, stress redistribution changed, deformation development restricted, strain accumulation decreased and evolution process of slide surface controlled by the composite body formed by grouting, which are favorable to excavation-process-stability. Excavation-process-stability control of high similar soil slope by cement-silicate double solution grouting is proven to be a practical and effective measure. Being coincided with actual condition, the simulation of excavation-process-stability control of high soil slope by cement-silicate double solution grouting with FEM is feasible.