Analysis on the Stability of No. 66 Enemy Station of the Ming Great Wall in Yanqing, Beijing

Under the action of perennial external weathering factors and human factors, the Great Wall is damaged by various diseases, and the overall structure stability is threatened by serious diseases. The preservation of the Great Wall and the continuation of the cultural relics value face severe challenges. In disease control, the stress distribution characteristics and deformation stability of the structure under multiple operating conditions are of great significance to the formulation of a protection scheme. In this paper, detailed engineering geological investigation, disease survey, field detection and engineering experiment were carried out for No. 66 enemy station of the Ming Great Wall in Yanqing District, Beijing. In addition, FLAC3D numerical analysis method was used to calculate and analyze the stability of the enemy station under natural state, wind load and rainstorm conditions, so as to obtain the stress distribution characteristics and deformation conditions of the enemy station, and provide technical support for the formulation of the protection and reinforcement scheme for No. 66 enemy station.