POWERCHINA Ltd(SH:601669) Sou Hu Cai Jing·2025-09-01 10:24Core Insights - The Yunnan Mining Project by China Electric Power Construction Group has achieved a significant milestone with the precise installation of the last steel structure truss of the long-distance belt conveyor corridor after 712 days of hard work [2] - The project, located in Guangdong's Yunfu region, is the largest single green mining project in South China, with a total investment of nearly 20 billion yuan [2] - The project aims to produce high-quality sand and gravel aggregates, meeting national standards for construction materials [4][9] Project Overview - The project consists of three major systems: mining and transportation, sand and gravel production, and a long belt corridor [8] - The total length of the long belt corridor is 21 kilometers, with a tunnel length of 15.5 kilometers [8] - The project has a recoverable resource of 1.257 billion tons and an annual production capacity of 55 million tons [2] Technical Achievements - The project team overcame various technical challenges, including excavation difficulties and water inflow issues, while adhering to strict environmental requirements [8] - A 700-ton large crane was used for the first time to complete the complex steel structure installation, which involved heights of 60.45 meters and spans of up to 42 meters [8] Future Implications - Upon completion, the project will enhance the production capacity of high-quality sand and gravel aggregates, providing sustainable resource support for infrastructure development in the Greater Bay Area [9] - The project will also contribute to the construction of green mines in China [9]