OPTIMIZATION OF THE CONSTRUCTION SEQUENCE AND ANCHORING PARAMETERS IN THE LARGE UNDERGROUND CAVERN EXCAVATION OF SHUIBUYA PROJECT
水布垭大型地下厂房施工顺序和锚固参数优化分析研究

The large underground main powerhouse of Shuibuya water conservancy project is located at interlacing of soft rock and hard rock,and the stability of the cavern will have significance for safe operation of the hydropower station. 3D nonlinear FEM numerical simulations considering of different construction steps and anchoring parameters have been performed. Comparising the numerical results,the optimal scheme of construction sequence and anchorage parameters of the cavern is suggested,and this scheme can keep the stability of cavern well.