A Virtual Geographic Environment for Simulation Analysis of Dam-break Flood Routing

摘要

Dam-break flood affected by highly changing and complex environment,has some characteristics including the sudden of occurrence,the rapid of expansion and the urgency of respond.This paper focuses on how to develop a virtual geographic environment(VGE)system to study the dam-break flood routing and its impact.Unlike existing work,our methods pay attention to the multidimensional and dynamic analysis methods in virtual geographic environment,which make flood routing easily understood to public and officers.Moreover,some GIS spatial analysis and real-time interactive operation with the VGE will also be implemented to support the risk assessment of the dam-break.Finally,a prototype system is developed to construct a virtual geographic environment for impact analysis of dam-break flood routing and dynamic interaction.Experimental results prove that the scheme addressed in the paper is effective and feasible.