A DVGE service system for risk assessment of dam-break in barrier lake

This paper employs theories and technologies of the distributed virtual reality and geographic information system (GIS) to construct a DVGE (Distributed Virtual Geographic Environment) system. The proposed DVGE System provides geographically distributed users with a shared virtual space and a collaborative platform in order to implement risk assessment work. Using five-layer service system architecture efficiently integrates and shares geographically distributed resources as well as modeling procedures. Meanwhile some key technologies including distributed virtual scene modelling and implementing mechanism of collaborative workflow are discussed. Finally, a DVGE prototype system is implemented to support risk assessment and impact analysis of dam-break in Barrier Lake. The experimental results show that the scheme developed in this paper is efficient and feasible.