Finite Prism Element Method for Mining Subsidence Damage Evaluation and 3D Data Model Based on GIS

摘要

Ground subsidence due to geotechnical engineering could cause a series of damage to surface structures and farmland and change surface and surface drainage patterns. GIS with strong functions of information management and visualization has been widely used in many engineering fields, such as in underground tunnel excavation, mining and slope stability. In this paper, a method for description of deformation due to underground excavation and stress analysis, called FPEM (finite prism element method), is presented. Integrating FPEM with GIS in the method of data modeling and data management, an effective 3D visualization system based on GIS for description, evaluation and calculation of deformation due to underground excavation of geologic body has been developed. The reliability and validity of this system have been tested in some engineering case studies.