The drainage capacity of water distribution channel in irrigation area is not only restricted by the drainage capacity of the channel itself and the upper and lower channels,but also affected by various pumping stations,small and medium-sized reservoirs and other water lifting and storage facilities in irrigation areas.In order to ensure the safety of canal system operation in irrigation area,based on the study on the drainage capacity of the channel itself and the restriction of the upper and lower channels,this study takes into account the two major influencing factors of water lifting and storage facilities,and considers the restriction of the pump on the drainage capacity of the connecting chan-nels and the regulating effect of water storage facilities such as reservoir on the drainage capacity of the backbone chan-nels.Comparative analysis method is used to analyze and calculate the feasible area of the channel water distribution system.The results show that the feasible region calculation method proposed in this study fully takes into account the pumping station's requirement that the water flow of the connecting channel should run near the design flow of the pump,and the reservoir's reduction of the maximum water flow of the channel.The calculation results are reasonable and reliable,and can provide scientific basis for the rational operation of the canal system and the design of the chan-nel system.
关键词
灌溉系统/灌区渠道/输配水能力/可行域
Key words
irrigation system/irrigation channel/water distribution capacity/feasible area
维普
万方数据