Study On Water Supply Network In Ji'nan Main Area Based On Microscopic Hydraulic Model

With the development of urban economy and the rapid population growth,human demand for water resources is increasing.At present,the complex network,the pipeline aging serious,poor water quality,pipe network pressure imbalance,leakage is serious,poor production is high,energy consumption is bigger.These problems are deeply troubled water department managers.The emergence of a variety of social,political,and economic problems,water supply pipe network operation management problems gradually cause the attention of governments and researchers.This topic main research content is: study and establishment of water supply pipe network microhydraulic model checking,water supply network block partition principles and theoretical study,using hydraulic model for jinan water supply network block scheme.Set up and check the water supply pipe network hydraulic model.Jinan water supply pipe network microhydraulic model is established,the pipe network model 330000,has 290000 nodes,the valve has 18000,10000 a fire hydrant.Hydraulic model repeatedly uses the manual test and automatic checking,error of pressure monitoring in the range of±2m can reach 73.97%,100% of the error range within ±3m.Flowmeter metering water amount accounts for over 1% of the total water amount,can achieve 100% of the error within 5% and the measurement of water accounts for over 0.5% of the total water amount,can reach 100% of the error within 10%.Water supply pipe network micro hydraulic model is set up,need to have artificial check when the model error is large,when the model error is lesser need for automatic checking.Automatic checking is checking C value,mainly adopts genetic algorithm to seek the optimal solution.Afterthe study of genetic algorithm,using the rapid chaos genetic algorithm optimization model.Research principle and principle of divided blocks.Achieve value-add management after the implementation of water supply pipe stress management,balance the pipe pressure,easy to control the water pressure.Implementation of water management,can be an independent assessment of regional water and calculation,control the production and marketing rate,easy to detect leakage point.Accident,can shorten the affected area.Can achieve water quality management,improve the water quality of the area,shorten Shui Ling.In case of secondary pollution,easy diagnosis of pollution sources,reduce the scope affected.Using microhydraulic model for jinan water supply network block scheme,according to the division,and water supply line,the functional requirements of water two level measurement area and six second measurement a rea,realize the pipe network pressure management,flow management and quality management.Quehua Waterworks in the previous stage of water quality total 81.5%,After block of 86%,First grade water quality increased by 4.5%,Two gradewater quality decreased by 2.6%,At the same time three gradewater quality after block,from the original 4% down to 2.1%.The chlorine residual concentration is less than the number of nodes in 0.05mg/L reduced by 8.19%.In the network after the residual chlorine concentration is greater than the number of nodes in 0.3mg/L increased by 19.72%.After the block of Yuqing Waterworks First grade water quality increased by 5.86%,Two grade water quality decreased by 5.76%,Three gradewater quality decreased by 0.09%;The chlorine residual concentration is less than the number of nodes in 0.05mg/L reduced by 27.51%.In the network after the residual chlorine concentration is greater than the number of nodes in 0.3mg/L increased by 35.96%.Using hydraulic model for pumping station water supply area optimization scheme,and formulates the pumping station water supply area block partitioning scheme.Will be cancelled midian Liu Zhuang pump station,by pumping station water supply above sea level,so that to reduce operating costs,reduce the investment of manpower and material resources.The new pump station water supply division above four village,implementation of water and stress management,reduce the leak rate,saving energy and reducing consumption.