Landslide disaster management requires the integration of investigation, design, and construction technologies to enhance engineering safety and cost-effectiveness. This study establishes an “air-space-ground” integrated investigation system using 3D laser scanning, InSAR monitoring, and UAV remote sensing to accurately identify sliding zone characteristics. Dynamic design of governance schemes is achieved through numerical simulation and multi-objective optimization algorithms. BIM collaborative management and automated monitoring systems ensure construction controllability. Case analysis shows that integrated technology reduces parameter misjudgment risks and improves comprehensive safety factors by 15–20%. Future research should focus on AI-driven real-time geological model inversion and green support materials.