Bidirectional Influence Between the Yangtze River Floods and the Wuhan Yangluo Grain Logistics Emergency Support Base Project and Corresponding Measures

The Wuhan Yangluo Grain Logistics Emergency Support Base Project is located within the Zhangdu Lake flood detention areas of the Yangtze River Basin. It is necessary to assess its flood impacts and mitigate flood-related disaster losses. Taking the Wuhan Yangluo Grain Logistics Emergency Support Base Project as a case, this research employed a two-dimensional planar mathematical model and a three-dimensional seepage model to analyze and demonstrate the bidirectional influence between the Yangtze River floods and the support base project, along with the corresponding measures. The results indicate that, on one hand, the project occupies 0.0005% of the effective flood storage capacity of the detention area. The impact of the construction project is minimal on the flow rate, duration, water level, and flow field processes during flood diversion and retreat. However, construction of the project has an effect on the seepage stability of flood control structures. On the other hand, the impact of the Yangtze River floods on the project is relatively small in terms of scouring and sedimentation. Nevertheless, during flood diversion operations, the project area submerges, with water depths ranging from 2.55 to 3.11 m. Based on these findings, flood emergency response plans should be formulated during both construction and operational periods. It innovatively summarized the bidirectional influence patterns between point-source engineering and floodwater in flood detention areas. It can provide decision-making support, engineering planning, construction, and management references for grain storage projects and other infrastructures within flood detention areas to address natural disasters induced by floods.