38.10米，我国在建海拔最高双曲拱坝电站取出世界最长“芯”

Core Insights - The Yebatan Hydropower Station has set a world record by successfully extracting a 38.10-meter concrete core sample, marking a significant achievement in dam construction technology in high-altitude regions [1][2] Group 1: Project Overview - The Yebatan Hydropower Station is located at an elevation of nearly 3000 meters on the upper reaches of the Jinsha River, with a total installed capacity of 2.24 million kilowatts and a maximum dam height of 217 meters [2] - The total volume of concrete to be poured for the dam is 2.51 million cubic meters, making it a major project under China's 14th Five-Year Plan and a key facility for the "West-East Power Transmission" initiative [2] - The first batch of generating units is expected to commence power generation by the end of this year, with an average annual power generation of 10.205 billion kilowatt-hours upon full completion [2] Group 2: Technological Innovations - The project team has developed various technologies to address the extreme temperature conditions at the site, including intelligent pouring, temperature control, and grouting management platforms [2] - Techniques such as "full dam middle hot cement concrete construction temperature control technology" and "winter pouring insulation comprehensive heat storage method" have been implemented to ensure continuous concrete pouring throughout the year [2] - The successful extraction of the core sample, which spans 12 layers and 80 casting layers, demonstrates the excellent quality of the concrete and the advanced construction techniques employed [1][2]