成渝中线高铁开启无砟轨道施工

Core Viewpoint - The Chengyu Zhongline High-Speed Railway, specifically the section from Chengdu to Chongqing, has officially entered the ballastless track construction phase, marking a significant milestone in its development [1] Group 1: Construction Progress - The construction site at the Chengdu-East-West Axis Avenue Bridge has seen the completion of concrete pouring for the type III ballastless track, which is the last critical step before track laying [1] - All ballastless track slabs are being prefabricated at the Chengjian Prefabrication Plant using an intelligent production line, incorporating unique identification chips for traceable quality control [1] - Advanced technologies such as precision adjustment robots and total station instruments are being utilized to ensure a smooth high-speed rail experience, akin to "water in a cup not shaking" [1] Group 2: Key Engineering Developments - The Shuan'an Tunnel, located between Jianzhou Station and Chengdu Station, is currently the longest and largest diameter earth pressure balance shield tunnel in China, with approximately 9,500 meters of excavation completed [1] - Upon completion of critical engineering works, the project will transition into the large-scale laying of ballastless tracks [1] Group 3: Future Connectivity and Impact - The Chengyu Zhongline High-Speed Railway is expected to be completed and operational by 2027, connecting with existing and under-construction high-speed rail lines, enhancing the transportation network in the Chengyu region [1] - This development will significantly reduce travel time between Chengdu and Chongqing, greatly facilitating travel for local residents [1]