数字孪生灌区精细化水量调控关键技术 研究与应用

Research and Application of Key Technologies for Refined Water Control in Digital Twin Irrigation Areas

为提高中国水资源利用效率,推动灌区精细化管理,基于目前灌区发展现状,提出了数字孪生灌区精细化管理框架,并分别对灌区可供水量预测、作物需水预测、灌区渠道水量优化配置以及测控一体化闸门的关键技术进行了研究,并构建了一套数字孪生灌区“四预”平台,通过“多要素立体感知”“全周期需水预报”“旱涝风险靶向预警”“水资源全过程预演”“防灾减灾科学预案”5条路径,实现灌区全方位、智慧化、科学化的管理。数字孪生灌区“四预”平台部分功能已在广州市流溪河灌区成功应用。数字孪生灌区全过程精细化水量调控关键技术通过对“供水-需水-配水-调水”全过程的水量调配,实现了水资源优化配置,提高了水资源利用效率,对数字孪生灌区的推广与应用具有指导意义。

To improve the efficiency of water resource utilization in China and promote refined management of irrigation areas,this paper proposes a refined management framework for digital twin irrigation areas based on the current development of irrigation areas.Meanwhile,it studies the key technologies of water supply prediction in irrigation areas,crop water demand prediction,optimal water volume allocation in irrigation areas,and integrated measurement and control gates.A set of“FEDE”platforms for digital twin irrigation areas have been constructed,and five paths of“multi-factor three-dimensional perception”,“full-cycle water demand forecasting”,“targeted warning of drought and flood risks”,“full-process rehearsal of water resources”,and“scientific plans for disaster prevention and reduction”are adopted.As a result,comprehensive,intelligent,and scientific management of irrigation areas is realized.Additionally,some functions of the“FEDE”platform of digital twin irrigation areas have been successfully applied to the Liuxi River irrigation area,Guangzhou.The key technology of precise water volume control throughout the entire process of digital twin irrigation areas achieves optimal water resource allocation and improves water resource utilization efficiency by realizing water volume allocation throughout the entire“water supply-water demand-water distribution-water transfer”process.This has a guiding significance for the promotion and application of digital twin irrigation areas.