3D visualization system for mine excavations is an important component of geological and mining engineer- ing visualization system.It is composed of five modules,namely segmentation module,voxelization module,orebody and mine excavation rendering module,3D display of orebody and mine excavations module,and excavation volume calculation module.The database includes two parts:development system and preparatory working.The system is realized based on VC++ programming language and SQL Server database,and is pra...