Evaluate The Efficacy And Optimize Addressing Option On Urban Disaster-prevention Space

Cities are the consequences of productivity development. The swift and violent development of productivity has continuously enlarged their scope, density of population and economic intensiveness, thus produce more factors in causing urban disaster and result to more and more losses. The urbanization brings resplendence and prosperity to society civilization and human living;on the other hand, it also makes human society more fragile to face to the urban disaster.This article is about the efficiently and harmoniously planning and developing urban space in the view of disaster-prevention. The research on urban disaster prevention is not only concentrated in the architecture standard, but also considers at spatial distribution and functions of city and architecture system, space planning and design should adapt to nature. So the significance of urban disaster-prevention planning is very obviously.The content of this article is about the urban disaster-prevention, by analysis the multiple problems caused by urban space construction and to discover the contradiction between the construction and disaster-prevention, Analyses the emergency disaster-prevention space from the urban space construction and their physical space, and research the disaster-prevention function of the urban space. The article specifies the main things of the urban emergency disaster-prevention space should consider with and the principles should abide, and discussed the application of GIS in urban disaster-prevention with an example of a district in Xi'an. It mainly uses the GIS urban analysis function such as network analysis and grid analysis to specifies the application of urban space on urban disaster-prevention and emergency shelter as well as evaluate and offer advice on the urban planning of the Xi'an district.