瑞梅铁路首座超5公里长大隧道实现贯通

Core Points - The completion of the first tunnel over 5 kilometers long, the Pianshan'an Tunnel, marks significant progress in the construction of the Rui-Mei Railway [1][3] - The Rui-Mei Railway is a major project identified in the national "14th Five-Year Plan," with a total length of 240.29 kilometers and a design speed of 160 kilometers per hour [5] Group 1: Tunnel Construction Progress - The Pianshan'an Tunnel is located in Anyuan County, Ganzhou City, Jiangxi Province, with a maximum burial depth of 332 meters [1] - The construction faced various geological challenges, including strong water sections, fault zones, and high ground stress areas, which increased the difficulty and safety risks [1][3] - Advanced technologies such as "geological radar + advanced horizontal drilling" were employed to accurately identify geological conditions within a 100-meter range ahead of the tunnel face [3] Group 2: Overall Project Status - As of now, the Rui-Mei Railway has completed 76,422 meters of tunnel excavation, 26,502 meters of bridge construction, and 14.2576 million cubic meters of earthwork for the roadbed [3] - The project aims to complete the main station buildings in Anyuan, Huichang, and Xunwu by the end of the year [3] - The railway will enhance the railway network in the Gan-Yue region and improve transportation links between the Pearl River Delta, eastern Guangdong, and central regions, promoting regional coordinated development [5]