Study On The Emergency Monitoring Management System For Dangerous Chemical Products On Yangtze River Estuary

In recent years,our country has made remarkable progress in the field of chemical industry, but the problems that we faced are still serious now. Aspects of environmental security remain under big stress in addition to facing other problems such as excess capacity, the lack of capability in innovation, rising operating costs and increasing downward pressure. Accidents related to dangerous chemical products occurred frequently, which had caused great damage to our society and people’s property. Many ships, which are loading dangerous chemical products, come and go frequently on Yangtze River estuary, and lots of chemical companies are also located on the coast. Once a dangerous chemical accident occurs, it will lead to huge damage to Yangtze River estuary and the surrounding areas. Therefore, establishing an emergency monitoring management system, which can respond to sudden dangerous chemical accidents efficiently, is necessary.Research contents and a technical roadmap are made in this thesis according to actual needs of emergency monitoring for leakage of dangerous chemical on Yangtze River estuary, combining research backgrounds with overseas and domestic research status. We study relevant construction theories of the emergency monitoring system, and compile a design scheme for the system. We complete the development of the emergency monitoring management system for dangerous chemical products on Yangtze River estuary. RIA interactive programs of the system are developed by using ActionScript programming language and ArcGIS API for Flex; server-side programs are developed by using C# programming language; the communication between the Flex and.NET is built by using FluorineFx communication gateway; the automatic formation of the emergency plan is achieved by using a dynamic form technology(XtraReport). The completion of the system realizes information management functions, such as query and editor, for dangerous chemical products on Yangtze River estuary; it realizes the function of the risk multi-level evaluation; it also realizes the function of pollution dispersion simulation for the leakage of dangerous chemical products and the function of distance measurement from the pollution dispersion area to surrounding functional areas in the process of diffusion; it achieves software implementation for the emergency monitoring process and the auto-generated function for emergency monitoring schemes.Study results show that:(1)It is efficient to query and manage the relevant information by establishing functions, such as risk source lists of coastal Yangtze River estuary, accident information lists and monitoring method lists;(2)It is convenient to evaluate risk levels and make early warnings by using the function of multi-level evaluation;(3)It is timely, intuitive and efficient to simulate the dispersion process and forecast the influence to the surrounding functional areas in the process of diffusion by integrating a pollution dispersion model, combining the advantages of WebGIS in map display and spatial analysis aspects;(4)The auto-generated emergency monitoring schemes promote the work efficiency greatly.This thesis includes the following original work: we realize the risk multi-level evaluation model for dangerous chemical products on Yangtze River estuary, which can make us visually know about the distribution of different risk source levels; we integrate a pollution dispersion model into the system, which can make us know about the influence to the surrounding functional areas in the process of diffusion dynamically; the automatic formation of the emergency plan is achieved by using a dynamic form technology(XtraReport). The system improves the information level of emergency monitoring; it makes up for the shortcomings of traditional emergency monitoring, such as lack of the reliable bases; it can direct emergency-monitor work efficiently and standardly.