Abstract：The inclined anchorage pile of reinforced cement-soil can form a gravity bulkhead in excavation. It is an active reinforcement method by agitating earth mixed with cement and buried anchor bar. The working principle of reinforced with steel strips and inclined cement-soil pile are introduced，and its mechanism on the strain and stability of excavation is also analyzed. By using slice method and Kranz theory，a simplified model of stability analysis in excavation structure braced by the anchoring pile is established. This method can overcome the shortcoming in Kranz theory，and it can simplify the calculation of slice method. So it has practical value，and an actual example using this method in Guangzhou underground station to analyze the stability is studied，which indicates its feasibility.
