SUN Yi, DAI Long-xia, FAN Chun-zhu, et al. Nonlinear finite element analysis of material sensibility in excavation process of underground pouerhouse of Linxi River Hydropower Station[J]. 2008, 29(S1).
SUN Yi, DAI Long-xia, FAN Chun-zhu, et al. Nonlinear finite element analysis of material sensibility in excavation process of underground pouerhouse of Linxi River Hydropower Station[J]. 2008, 29(S1).DOI:
According to the initial stress field of the Linxi River rock masses
and based on the multiveariate linear regression method
the initial stress field of rock mass is obtained; its loading is and carried out in the software of ABAQUS. Considering the batholithic joint
the interface element functional element program is developed based on ABAQUS-UEL. Nonlinear finite element analysis is used to simulate the excavation unloading.Variations of displacement and stress field in different stages as well as the deformation regularity of different parts of rock masses in different material parameters are discussed.The results of FEA show that the rock stability can be kept in the process of excavation.