为飞鸟戴“降噪耳机” 护江豚避开水中施工——一座长江大桥 绿色故事动人

Core Viewpoint - The Shuangliu Yangtze River Bridge in Wuhan has successfully passed acceptance inspection, emphasizing ecological protection and biodiversity during its construction [1] Group 1: Bridge Design and Construction - The bridge spans 35.043 kilometers and connects Wuhan and Ezhou, while crossing the Zhangdu Lake Wetland Nature Reserve [1] - The design includes a unique sound barrier for bird protection, marking a first in Yangtze River bridge construction [2] - The construction team modified the design multiple times to minimize ecological impact, resulting in increased costs [2] Group 2: Environmental Protection Measures - A sound barrier was installed to reduce noise pollution for migrating birds, achieving daytime noise levels of 50-55 decibels and nighttime levels of 40-45 decibels [2] - The bridge's design avoids underwater construction to protect the habitat of the Yangtze River dolphin, using a single-span steel box girder suspension bridge [3] - Construction methods included using a closed tower construction machine to minimize noise and dust, and a closed concrete mixing station to further reduce environmental impact [4] Group 3: Wildlife Conservation - The population of Yangtze River dolphins in the area has increased from approximately 5-6 individuals to about 20 during the construction period [5] - The construction team has actively engaged in wildlife protection, with visual reminders of dolphin conservation throughout the site [5] Group 4: Pollution Control Systems - The bridge features a drainage collection system that automatically identifies and manages pollutants, with 25 such systems installed in sensitive areas [6] - This system addresses the challenges of wastewater management and hazardous material incidents effectively [6] Group 5: Economic Impact - Once operational, the bridge will reduce travel time between Wuhan and Ezhou from 90 minutes to 5 minutes, supporting the integration of the Yangtze River middle reaches urban agglomeration and the high-quality development of the Wuhan metropolitan area [6] - The project aims to balance ecological protection with economic development, striving for a win-win situation [6]