Deformation characteristics and mechanism of surrounding rock masses in the shallow large underground powerhouse of the Three Gorges Project

Taking the shallow large underground powerhouse on the right bank of the Three Gorges Project as an exemple,based on the monitored deformation data during excavation and numerical simulation analysis,the deformation characteristics and mechanism of surrounding rock masses are analyzed considering geological data and excavation process. The rock masses deformation is influenced by geological structural planes,natural stress field and landform etc. The crown of the wide span and high wall undergro...