渝昆高铁重难点控制性工程长水机场隧道贯通

Core Viewpoint - The successful completion of the Changshui Airport Tunnel marks a significant milestone in the construction of the Yuxinou High-Speed Railway, enhancing transportation efficiency between Chongqing and Kunming and promoting regional economic development [1] Group 1: Project Details - The Changshui Airport Tunnel, measuring 8,770 meters, is a critical and complex engineering project that passes under sensitive structures including the airport operational area and existing railways [1] - The tunnel is classified as a high-risk project due to its environmental sensitivity, geological safety risks, and the need for technical innovations [1] - A technical team composed of railway authorities, government, and universities successfully addressed over 20 technical challenges to ensure safe construction without disrupting airport and railway operations [1] Group 2: Construction Progress - With the completion of the Changshui Airport Tunnel, 43 tunnels have been completed in the Yuxinou High-Speed Railway within Yunnan, achieving an 80% tunnel completion rate [1] - The construction of the Yuxinou High-Speed Railway in Yunnan is now in a critical phase, with the main works for the roadbed, bridges, and tunnels nearly complete, and the subsequent electrical and station building works progressing rapidly [1] Group 3: Economic Impact - The Yuxinou High-Speed Railway spans approximately 700 kilometers, with 388.6 kilometers located within Yunnan Province [1] - Once operational, the railway will significantly reduce travel time between Chongqing and Kunming, greatly enhancing transportation convenience in the Southwest region and facilitating coordinated regional economic development [1]