兴山东隧道全隧贯通 宜兴高铁全线主体工程完工

Core Insights - The successful completion of the Xingshan East Tunnel marks a significant milestone for the Yixing High-Speed Railway project, indicating that the main bridge and tunnel engineering works are now complete, moving closer to full operational status [1][7] Group 1: Project Overview - The Xingshan East Tunnel, located in Xingshan County, Yichang City, has a total length of 16.88 kilometers and traverses seven fault zones, with a maximum burial depth of 1,256 meters, presenting a complex geological environment [3] - The Yixing High-Speed Railway is a key project in the national "13th Five-Year Plan," with a total length of 108.38 kilometers and a designed speed of 350 kilometers per hour, connecting the Zhengzhou-Chongqing High-Speed Railway and the Shanghai-Chongqing-Lanzhou High-Speed Railway [7] Group 2: Engineering Challenges and Solutions - The project team faced significant challenges, including soft rock deformation and gas hazards. They implemented innovative techniques such as "anchor cable + steel belt traction" to stabilize the fractured surrounding rock and developed a tunnel ventilation system to manage gas concentrations effectively [3][5] - To combat high temperatures within the tunnel, two ice plants were constructed, supplying nearly 100 tons of ice daily to reduce internal temperatures, thereby enhancing worker safety and construction efficiency [5] Group 3: Impact on Transportation - Once completed, the travel time from Xingshan to Yichang will be reduced from the current 2-hour car journey to approximately 20 minutes by high-speed train, significantly improving connectivity and contributing to the development of the Yangtze River Economic Belt [7]