中新社佛山9月2日电 (郭军 王锐)广东省首个时速350公里高铁"隔音隧道"——广湛高铁全封闭式声 屏障2日完工。 广湛高铁2标项目正线全长约10.38公里，含佛山特大桥、高中立交特大桥2座。其中，高中立交特 大桥全长约5101米，包括8座连续梁，跨越佛山中心城区。该桥设有全线唯一一段全封闭式声屏障，长 度占桥梁全长近50%。 据中铁二十五局项目现场负责人陆浩介绍："高中立交特大桥22号墩到82号墩紧邻居民区，为降低 列车高速运行产生的噪声影响，我们为桥梁加装了2.5公里圆形全封闭式声屏障，形成一段'隔音隧 道'。" 广湛高铁设计时速350公里，是中国"八纵八横"高速铁路网沿海铁路客运大通道的重要组成部分， 是连接粤港澳大湾区和海南自贸港、北部湾城市群的高速铁路。项目建成通车后，将大幅缩短粤西地区 与粤港澳大湾区的时空距离，广州中心城区至湛江中心城区可实现90分钟互达。(完) ...

Core Viewpoint - The Beijing-Harbin High-Speed Railway (京哈高铁) Beijing to Shenyang section will introduce 24 benchmark trains, allowing the Fuxing bullet trains to operate at a standard speed of 350 km/h regularly starting from July 1 [1][2] Group 1: Train Operations and Enhancements - The new train operation schedule will see the introduction of benchmark trains using the latest CR400BF intelligent Fuxing bullet trains, which will reduce travel times between certain cities [2] - Currently, there are 13 trains on the Beijing to Shenyang section with travel times under 3 hours, with the fastest train (G901) taking 2 hours and 44 minutes; this will increase to 22 trains under 3 hours, with the fastest (G901) reduced to 2 hours and 29 minutes, saving 15 minutes [2] - The introduction of benchmark trains will enhance high-speed rail transport capacity in Northeast China, with new services starting from Beijing West Station and additional stops in cities like Mudanjiang and Dandong [2] Group 2: Infrastructure and Safety Standards - The Beijing to Shenyang section has been designated as the first safety standard demonstration line in Northeast China, following comprehensive testing and upgrades to meet the 350 km/h operational standard [1] - The railway has undergone adaptive renovations and upgrades to its infrastructure, including tracks, bridges, tunnels, and signaling systems, ensuring compliance with high-speed operation requirements [1][3] Group 3: National Railway Adjustments - Starting July 1, the national railway will implement a new schedule, adding 236 passenger trains and 39 freight trains, including overnight sleeper trains on various routes [3][4] - The total number of scheduled passenger trains will reach 13,300, with expanded services such as "quiet carriages" and internet meal ordering available at 84 stations [4]