Taking the TB Hydropower Project as an example, this paper introduces the application and innovation of intelligent construction technology in the construction of roller-compacted concrete (RCC) dams. Based on the integration of “GIS+BIM+VR+IoT,” an intelligent construction platform was established. Utilizing a dual-network integration model of “intranet + 5G network”, the four systems of “intelligent mixing, intelligent rolling, intelligent grouting, and intelligent temperature control” were coordinated and unified, two core management threads of “intelligent pouring” and “intelligent temperature control” were constructed. Remarkable results were achieved: the dam rose by 126 m within a year, and a 26.5-meter-long core sample, the world’s longest for RCC, was extracted. The application of intelligent construction technology has made project construction management more precise and efficient, ensuring construction quality. Simultaneously, through deep integration with domestic universities in the “industry-academia-research” collaboration, new technological achievements were made in the fields of intelligent equipment systems, unmanned rolling, and dynamic temperature control, providing a solid foundation for the intelligent and high-quality development of large-scale hydropower project.