海南鹦哥岭特长隧道双洞贯通

Core Viewpoint - The successful completion of the dual tunnel breakthrough at the Yinggeling Tunnel, part of the Shiyun to Baisha Expressway, marks a significant milestone for traffic upgrades in central Hainan, laying a solid foundation for the expressway's full operation by 2026 [2]. Group 1: Project Overview - The Yinggeling Tunnel is 8.282 kilometers long and designed as a separated dual four-lane expressway tunnel [2]. - The project is managed by China Communications Second Highway Engineering Group, which undertook the main tunnel construction of 3,730 meters and a shaft of 1,275 meters [2]. - The construction faced complex geological conditions, including two fault zones, making the project particularly challenging [2]. Group 2: Construction Milestones - Key milestones include the early breakthrough of the 1,275-meter shaft in October 2024, expanding the total working face to four [2]. - The left tunnel achieved a breakthrough of 1,000 meters in December 2024 and 2,000 meters in April 2025, while the right tunnel reached similar milestones in November 2024 and March 2025 [2]. - The right tunnel successfully completed its breakthrough on December 8, 2025, leading to the overall dual tunnel completion after two years of intensive work [2]. Group 3: Technological and Environmental Considerations - The project utilized a "main tunnel + shaft" synchronous construction system and real-time geological radar monitoring to address complex geological risks [3]. - Safety and quality control were emphasized, with the introduction of a smart management system and a digital monitoring command center [3]. - Environmental considerations included the use of wastewater treatment equipment and a fully enclosed gravel processing plant, promoting resource reuse and aligning with ecological priorities [3]. Group 4: Impact on Regional Development - The tunnel's completion is expected to significantly improve transportation conditions in central Hainan, facilitating easier travel for residents [3]. - It supports rural revitalization and regional coordinated development, accelerating resource development and tourism integration in mountainous areas [3]. - The project is seen as a critical infrastructure component for Hainan's Free Trade Port construction, enhancing transportation support [3].