中国最北高铁全线铺轨贯通

Core Points - The Harbin-Yichun high-speed railway (Ha-I high-speed railway) has completed its full track laying, paving the way for subsequent debugging and testing [1][3] - This railway is a significant extension of China's "eight vertical and eight horizontal" high-speed rail network, specifically the Beijing-Harbin and Beijing-Hong Kong-Macau corridors [1] - It is notable for being the highest latitude high-speed railway under construction in China, with the largest annual temperature difference and the first to traverse an island-like permafrost area [1] Summary by Sections - Construction Progress - The Ha-I high-speed railway began track laying on May 28, 2024, with an average daily progress of 2.5 kilometers, which is a 50% increase in efficiency compared to traditional methods [3] - The project has utilized information technology and intelligent management systems for real-time monitoring of key equipment [3] - Future Development - The next phases will focus on fine-tuning the track, completing the "four electrical" projects, and conducting joint debugging and testing [3] - Economic Impact - Once completed, the Ha-I high-speed railway will enhance the high-speed rail network structure in Northeast China, playing a crucial role in promoting regional economic and social development [3]