STUDY ON STABILITY OF UNDERGROUND CAVERN BASED ON 3DGIS AND 3DEC

Three-dimensional geographic information system(3DGIS) has special advantage in respects of visualization and constructing model;and the discrete element method program—3DEC is one of the most matured techniques to solve the problems of structurally controlled failure of engineering rock mass.With the help of FISH language,which is embedded in 3DEC,two kinds of advantage are joined together to provide a powerful tool to perform the consulting work of rock mass stability problems for underground cavern in hydropower engineering.