Abstract: The demolition of high-altitude construction platforms for concrete heat-absorbing towers in solar power plants entails extremely high safety risks, including structural instability, falls from height, and object strikes. To overcome the limitations of traditional reactive safety management, this paper proposes a dynamic closed-loop risk control system that integrates Building Information Modeling (BIM), Finite Element Analysis (FEA), and the Internet of Things (IoT). The integration of BIM and FEA enables the simulation of structural safety under various demolition scenarios, while 4D construction simulation and visualization enhance scheme optimization and personnel training. A collaborative management platform with a multi-layer "perception-transmission-platform-application-user" architecture was established to achieve real-time data-driven risk warning and coordinated response. Application in the PowerChina Gonghe 1 GW hybrid solar project demonstrated that this system reduces key risk values (based on the LEC evaluation method) by over 50%, facilitating a shift from experience-driven to data-driven safety management and providing references for intelligent safety practices in tall structure construction.