The Research Of Emergency Control And Emergency Response System Of The Middle Route Of The South-To-North Water Transfer Project

The Middle Route of the South-to-North Water Transfer Project would supply water for Beijing, Tianjin, Hebei, Henan four provinces, more than 100 cities. The water of the project is form Danjiangkou Reservoir, and the length of the project is 1432km. The project can optimize the allocation of water resources, improve the ecological environment and alleviate the shortage of water in northern China, so the project has received extensive concern.Because the length of the project is very long, and there are a lot of buildings along the project, and there is a lack of storage buildings, how to response to emergency and reduce the impact of hazards has become one of the research hotspots. This article develops the study on emergency response from two aspects:technical level and management level. The emergency control strategies were discussed by using the mathematical models, the "Emergency response and decision-making consultation system" and the "Joint operation of water quality and quantity and emergency control system" are designed. The main results are as follows:(1) Based on the QUAL-Ⅱ water quality model, combined with engineering requirements and the actual situation, relying on the existing hydraulic model, a one-dimensional water quality model is established. The model can consider the reaction between the following 9 materials: ①DO, mmonia nitrogen,②nitrite nitrogen, ④itrate nitrogen,⑤BOD,⑥ chlorophyll-α, ⑦dissoluble phosphorus, ⑧a imagined biodegradable material,⑨a magined non-biodegradable material.(2) Using the sudden water pollution accident as an example, the channel is divided into pollution pool, upstream pool and downstream pool three parts, the emergency control strategy of each part is discussed. In the pollution poll, when sudden pollution accident incidents, the upper gate and the lower gate should be closed at the same time, and the recession sluice should be used. In the upstream pool, when sudden pollution accident incidents, the opening degree of the first gate—Taocha headworks gate shoule be decreased rapidly to the target flow, and the opening degree of other gates should be decreased to the target flow in the same proportion of the upper gate of the pollution poll, the recession sluice should be used, and the sub-outlet should supply water normally. Simulation shows that this strategy is feasible. In the downstream pool,3 emergency control strategies are proposed and deduced.(3) The "Joint operation of water quality and quantity and emergency control system" is designed with the results of the project. The system has a lot of functions, such as simulation, evaluation, prediction, control, disposition and so on. The system could offer the help for the emergency response from technical level.(4) Through the investigation, the emergency response management needs are collected, the contents and procedures are defined, and the "Emergency response and decision-making consultation system" is designed. Process management of emergency response could be achieved by the system, and the information which is required could be pooled, analyzed and displayed by the system as well. In addition, a consultation and command platform is provided. The system could offer the help for the emergency response from management level.