Study On Joint Allocation Of Surface And Groundwater In Da’an Irrigation District Of Jilin Province

Human demand for water resources increases with economic and social development and rapid population growth.Scientific and rational planning and management of irrigated water resources is essential for improving water use efficiency and ensuring food security in the current situation of water shortage caused by increased water demand.A lot of research has been done for this researcher,but most researchers focus on specific aspects or scales,which are very in-depth,systematic and weak.This article from the integration of management integrated with technology,coupled with water dynamics simulation model and optimization model of reviewing and summarizing the predecessors’ research results,proposed the irrigation area water more collaborative scheduling simulation-optimal coupling model,illustrates the framework of the basic theory of each component,and the selected Dan an irrigation district of jilin province as the research object,mainly made the following conclusions:(1)The model of optimal allocation of multiple water sources in the irrigated area was constructed,and multiple objective functions were established based on economic utility,ecological utility and irrigation performance.Hicks optimization method was improved,optimal allocation of multiple water sources in the irrigated area was realized.(2)Through the fusion of irrigation area water optimal allocation method and more irrigation water cycle process simulation model,using the MPI parallel computing technology,established the irrigation area water more collaborative scheduling simulation-optimal coupling model,put forward the jinxi spring irrigation area and the flood irrigation under reasonable surface-and groundwater utilization ratio,to optimize the process of irrigation water.(3)The main planting crops in Da’an Irrigation District are simulated.The main planting crops in Da’an Irrigation District are rice.This study takes the first irrigation of spring irrigation in Da’an Irrigation District as an example.The surface-groundwater joint scheduling optimization model in Da’an Irrigation District is used for scheduling analysis,and the optimal water distribution is obtained through optimization models.The water level and water distribution of the canal system are simulated.The simulation process is used to simulate the dispatching process,and the water distribution time of the most canal water distribution and water volume is obtained.Finally,the joint scheduling scheme of surface water and groundwater in Da’an irrigation area is given.