沈白高铁攻克四大世界级难题 辽宁实现市市通高铁

Core Points - The Shenyang to Jiamusi High-Speed Railway (Shenyang to Baihe section) officially commenced operations on September 28, significantly reducing travel time to Changbai Mountain to 4 hours and 33 minutes from Beijing [3][5] - The project faced numerous challenges, including extreme cold weather, complex geological conditions, and strict ecological protection requirements [3][4] Group 1: Project Overview - The Shenyang to Baihe section of the high-speed railway includes the construction of 85 tunnels and 175 bridges, achieving a bridge-tunnel ratio of 77% to minimize farmland occupation [3] - The project was approved in phases, with initial designs approved in December 2019 and construction starting in July 2021 [3] Group 2: Engineering Challenges - The construction faced four main difficulties: extreme cold temperatures dropping to -30 to -40 degrees Celsius, complex geological conditions, challenging environmental factors, and the presence of diverse wildlife [3][4] - A dual temperature control system was designed to address the impact of extreme cold on the railway's foundation, successfully managing 17.2 kilometers of expansive soil sections [4] Group 3: Environmental Considerations - The railway crosses the Yanchi Wetland Nature Reserve, home to the critically endangered Chinese merganser, with measures taken to avoid its habitat during the design phase [4][5] - Noise barriers and ecological corridors have been established to protect wildlife and maintain the integrity of the regional ecosystem [5] Group 4: Connectivity and Operations - The Shenyang to Baihe section connects with existing high-speed rail networks, facilitating a comprehensive high-speed rail system across Northeast China [5] - Initially, 64 train services will operate daily, with a maximum speed of 350 kilometers per hour [5]