基于需水过程的灌区实时渠系优化配水模型及应用.

Aiming at the issue that the existing water distribution plan in irrigation area can not meet the actual operation of canal system and the real-time water demand of crop growth and development, a real-time optimal water distribution model of canal system based on crop water demand process was established. Taking the ending time of lower level canal water distribution as the decision variable, and taking the objective function as the minimum sum of water shortage rate and the minimum water loss of canal system, the paper used the genetic algorithm to solve the model. The results show that: compared with the water distribution scheme prepared by the empirical method, the water distribution time of all levels of canal system is more reasonable, and the fluctuation of water distribution flow is small; the irrigation allocation is more in line with the actual water demand of crops, and the coupling degree with the real-time water demand of crops is higher, the water shortage rate of irrigation area is reduced by 13.6%, the water distribution time is reduced by 2.5 days, and the water transfer loss of canal system is reduced by 6.3%. The canal water distribution achieves the time-saving, efficient and water-saving goals. [ABSTRACT FROM AUTHOR]