川西高原夹金山隧道建成

Core Points - The completion of the 9.35-kilometer Jiajin Mountain Tunnel on September 28, 2023, marks a significant infrastructure achievement, set to alleviate transportation issues for 110,000 residents during winter months when snow blocks access [1] - The tunnel will reduce travel time across Jiajin Mountain from 1 hour to just 10 minutes, enhancing connectivity in the region [1] - Innovative construction methods, including the parallel tunnel "TBM + blasting method," were employed, achieving a record excavation rate of 50 meters per day in challenging high-altitude conditions [1] Infrastructure Development - The Jiajin Mountain Tunnel connects key revolutionary historical sites and ecological tourist attractions, promoting economic and cultural exchanges between Ya'an City and Aba Prefecture [1] - The construction of the tunnel is part of a broader effort to improve transportation networks in the region, transforming previously treacherous routes into accessible pathways [2]