数字孪生丹江口工程突发水污染事故模型研发与应用

Development and application of a digital twin model for emergency water pollution incidents in Danjiangkou Reservoir Project

摘要:

针对丹江口水库水域面积广、库岸线长、污染来源分散且类型多的特点，基于有限体积方法自主研发丹江口水库二维水动力水质机理模型，基于拉格朗日粒子追踪方法自主研发丹江口水库二维“油粒子”随机模型。通过机理模型和随机模型相结合，实现丹江口水库任意位置、不同污染类型和排放方式情景的突发水污染场景的快速构建，模拟库区水流运动及污染物输移扩散过程，实时输出污染团前锋运动轨迹、距陶岔里程及预计到达时间等。基于“云境”数字孪生模拟仿真平台实现计算结果的可视化展示，并在丹江口水库多次水污染事故应急处置工作中成功应用，为南水北调中线水源工程应对突发水污染事故和保障水质安全提供有力技术支撑。

Abstract:

Considering the vast surface area，long shoreline，dispersed and varied types of pollution sourcescharacteristic of Danjiangkou Reservoir，a two-dimensional hydrodynamic and water quality mechanism modelof Danjiangkou Reservoir was independently developed based on the finite volume method. Furthermore，a twodimensional“oil particle” stochastic model for Danjiangkou Reservoir was independently developed based on theLagrangian particle tracking method. By integrating the mechanism and stochastic models，rapid construction ofemergency water pollution scenarios at any location，for different types of pollution，and under various dischargeconditions in Danjiangkou Reservoir was achieved. The simulation includes the movement of the water fl ow and thetransport，dispersion process of the pollutants within the reservoir area，providing real-time outputs of the pollutionplume’s leading-edge trajectory，distance to Taocha，and estimated arrival time. Utilizing “Cloudscape” digital twinsimulation and visualisation platform，the computational results were visualized and successfully applied in multipleemergency water pollution accident responses in Danjiangkou Reservoir，providing strong technical support for Southto-North Water Diversion Middle Route Project in addressing emergency water pollution incidents and ensuring waterquality.