成达万高铁7条高压线后退6公里
Si Chuan Ri Bao·2025-10-20 22:21

Core Viewpoint - The successful completion of the power line relocation project for the Chengdu-Dazhou-Wanzhou high-speed railway in Nanchong City prioritizes the safety of migratory birds, leading to a design change that moves high-voltage lines away from critical bird migration paths [7][8]. Group 1: Project Details - The 500 kV Nanchong-Changpingshan power line, part of the Chengdu-Dazhou-Wanzhou high-speed railway project, was successfully energized on October 20, 2023, after a significant design alteration [7]. - The original design of the power lines was modified to retreat 6 kilometers to avoid a critical migratory bird route, which is home to over 30,000 migratory birds, including the black-faced spoonbill and black stork [7][8]. - The new design maintains a distance of over 700 meters from the ecological wetland, reducing the risk of bird collisions and minimizing the impact of electromagnetic radiation [8]. Group 2: Environmental Considerations - The decision to alter the power line design was made after extensive consultations with experts and field surveys, emphasizing the importance of protecting migratory birds during their migration season from October to March [7][8]. - Monitoring data indicates that migratory birds in the area typically fly at altitudes between 40 to 45 meters, which overlaps with the electromagnetic fields of high-voltage lines, potentially causing disorientation [7][8]. - The project includes the installation of warning lights and balls on the new power lines to further enhance safety for the birds [8]. Group 3: Strategic Importance - The Chengdu-Dazhou-Wanzhou high-speed railway is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network, supporting national strategies such as the development of the Yangtze River Economic Belt and the Chengdu-Chongqing economic circle [9]. - The railway spans 486.4 kilometers with a design speed of 350 kilometers per hour, highlighting its significance in regional connectivity and economic development [9].