Research On Assessment Model For Community Disaster Risk And It's Application

With the development of society and the expansion of the city scale, the concentration and intensity of the crowd is more and more high. As the community is the basic cell of society and the major burden of varied disasters, its function of emergency and disaster prevention and reduction is particular important. In recent years, the severe disasters in the internal and international regions remind people repeatedly to pay attention to disaster prevention, strengthen the ability against the risk of the disasters, promote the construction of crisis management system and reduce disaster events of communities. The disaster risk prevention and treatment of Community is not only the major problem to be solved in the filed of society management, but also one of the important aspects in emergency management of computer mathematic application. The research is very important for raising the capability of withstanding disasters and advancing harmonious and stable development of society.This paper is relied on the project-"Information System Against Disaster and Cooperated System Research Based on Service Orientation"(project number90924025) of the National Natural Science Foundation Committee. The study object of the research is to reduce the disaster risk of communities. The project is aimed to develop the valuable system platform of the crisis management of communities, share the community information of disaster risk and reduce the probability for potential disaster. The paper starts the research of risk mitigation of community from both theoretical and practical aspects.1) To take five communities of Chengguan district of LanZhou city as examples, the standard vulnerability evaluation index has been designed by analyzing the vulnerability of community disaster risk, the fuzzy comprehensive evaluation for vulnerability of community disaster risk has been made based on the analytic hierarchy process, and at same time the study analyze the main factors that maybe affect vulnerability of community disaster risk. The research analyses and evaluates the index of disaster risk vulnerability of community in Chengguan district through the investigation of the sensitivity of the residents for community disaster risk mitigation, then explore countermeasures for disasters risk management of community and the importance of public participation from the perspective of communities.2) On the basis of the risk information described by public, the research builds the mathematical model to evaluate the credibility of public feedback information by adopting the credibility theory, then provides a quantitative community public participatory crisis management mode through validation of fire risk data collected from the residents in WuLiPu community.3) The Oracle Map is chosen as geographic information platform by Oracle Spatial techniques. The prototype system—Cooperative Risk Map System (CRMS) is constructed so that the public can participate in community crisis management. The study object is selected from the residents in WuLi community of Chengguan district of LanZhou city. The public is involved in crisis management work through internet or mobile phone to report fire alarm in this area. The system make the credibility judgment and quantitative for public feedback information, then display the relevant information of fire risk in community directly on the Oracle Map. This system make community emergency management turn from passive cope to active security and improve the ability of crisis management of WuLi community.4) From the viewpoint of Web Services technology, the paper discusses the important role of Geospatial Web Services in community crisis management system, expounds the applications in community crisis management provided by geographical space Web Services and other non-space Web Services. The research explores the effective application of the geographical space(the Web service standards formulated by OGC) through overall community crisis management process combined with the whole process of the community crisis management, and designs a method of Web Services with geographical space that can be used through all the community crisis management process.5) With the WFS standards established by OGC, we designed Benchmark applied to test the performance of community crisis management system. The system is developed on the basis of the public information needed for reducing the community disasters risk in emergency management process, as starting point to design queries statements that constitute a series of characteristic class of Benchmark from the point of view of database query, then tested and verified through dealing with the fire scenario of WuLi community by using JMeter tool.