Core Viewpoint - The successful completion of the main structure construction for the cooling water intake and seepage prevention project of the Lufeng Nuclear Power Unit 5 and 6 lays a solid foundation for the commercial operation of the units, highlighting the project's significance in promoting clean energy utilization and enhancing energy security in the Guangdong region [1]. Group 1: Project Overview - The Lufeng Nuclear Power project is crucial for advancing clean energy use and supporting the green low-carbon transition in the eastern Guangdong region [1]. - The project involves complex geological conditions, including high groundwater levels and strong permeability of sand layers, necessitating innovative construction techniques [1][4]. Group 2: Construction Techniques - The project team adopted high-pressure jet grouting technology to control seepage in the seepage wall, ensuring a manageable construction environment for deep foundation excavation and support [1]. - A unique construction plan combining seepage walls, deep foundations, and segmented large submerged pipes was developed to address the challenges posed by the project's structural features and site constraints [3]. - The innovative design of a "track-mounted hydraulic walking platform + custom arc steel formwork" system improved formwork assembly efficiency by approximately 30% and increased concrete pouring efficiency by about 25% [3]. Group 3: Quality Control - A comprehensive quality control system was established at the project's outset to ensure traceability and reliability, with all data recorded digitally for future reference [4]. - The project team implemented a rigorous process to ensure that every rebar and concrete mix ratio is documented, creating a quality archive that supports long-term operational safety [4]. Group 4: Risk Management - The deep foundation excavation, reaching a depth of 30 meters, posed significant risks, which were mitigated through advanced simulation and monitoring techniques [5]. - The project team optimized the support system from five concrete supports to a composite system of three concrete supports and localized steel supports, enhancing safety while reducing costs [5].