中新社北京8月22日电 (段修健 刘文文)据记者不完全统计，中国将有十余条高铁线路在年底前开通运 营。这些新线路将填补部分区域高铁网络空白，进一步完善国家"八纵八横"高速铁路网。 多条重点线路进入开通倒计时。作为中国"八纵八横"高速铁路网主通道之一——京兰通道的重要组成部 分，包头至银川高速铁路(包银高铁)是中国首条连接两个少数民族自治区的高铁线路。该线路起自包头 站，终至银川站，正线全长约517公里，设计时速250公里，分"惠农至银川段"和"包头至惠农段"建设。 其中惠农至银川段已于去年10月开通，包头至惠农段计划年内建成通车。 作为粤西融湾交通"大动脉"的广州至湛江高速铁路(广湛高铁)即将进入联调联试阶段，为项目年底具备 通车条件奠定了基础。该线路是广东省自主投资建设技术最复杂、线路最长、投资最大的铁路项目，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。 沈佳高铁沈白段(沈白高铁)已于6月1日启动联调联试。沈白高铁正线起自沈阳北站，终至长白山站，全 长约430公里，设计时速350公里。该段预计9月30日开通。 此外，盘州至兴义高速铁路，西安至延安高速铁路，南宁至凭祥高铁崇左至凭祥段，沪渝蓉沿江 ...

Core Viewpoint - The approval of the feasibility study for the new Shanghai-Hangzhou high-speed railway marks a significant step towards its construction, with a total investment of approximately 67.1 billion yuan and a length of about 223.8 kilometers [2]. Group 1: Project Overview - The new Shanghai-Hangzhou high-speed railway is an important part of the national "Eight Vertical and Eight Horizontal" high-speed railway network and is included in the 102 major railway projects of the national "14th Five-Year Plan" [2]. - The railway is designed for a speed of 350 kilometers per hour and will connect Shanghai East Station to Hangzhou West Station, passing through several key areas and stations [2]. Group 2: Demand and Benefits - The new railway will serve as the second high-speed rail link between Shanghai and Hangzhou, addressing the increasing demand for cross-city business travel and daily commuting, which has led to ticket shortages on the existing line [3]. - Once completed, the travel time from Hangzhou West Station to Shanghai East Station will be reduced to 40 minutes, enhancing convenience for residents and strengthening the "city integration effect" in the Yangtze River Delta region [3]. - The railway will also connect with the Hangzhou Airport high-speed railway at Tongxiang Station, facilitating better access to both Xiaoshan and Pudong airports [3].

Core Viewpoint - The testing and commissioning of the Baotou to Yinchuan high-speed railway segment has officially begun, laying a solid foundation for its timely opening [1] Group 1: Project Overview - The Baotou to Yinchuan high-speed railway segment (referred to as Baoyin High-speed Railway Baohui Section) is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed railway network, specifically the Beijing-Lanzhou corridor [1] - The railway starts from Baotou Station in Inner Mongolia, passing through cities such as Bayannur, Ordos, and Wuhai, and ends at Huinong South Station in Shizuishan, Ningxia Hui Autonomous Region [1] - The total length of the line is approximately 420 kilometers, with about 402 kilometers in Inner Mongolia and 18 kilometers in Ningxia [1] Group 2: Technical and Operational Details - During the joint debugging and testing phase, the railway department will conduct comprehensive tests on the high-speed railway line and train control systems at different speed levels to ensure all performance aspects are satisfactory [1] - The design speed of the railway is 250 kilometers per hour [1] Group 3: Impact on Travel Time - The Baoyin High-speed Railway Baohui Section is expected to be operational within the year, which will allow for the full connectivity of the Beijing-Lanzhou corridor [1] - The travel time from Baotou to Yinchuan will be reduced from a maximum of 6 hours to under 3 hours [1]

Core Viewpoint - The completion of the ballastless track construction for the Guangzhan High-speed Railway marks a significant milestone in the project, which is the longest and largest railway project in Guangdong Province, enhancing connectivity in the region [1][3]. Group 1: Project Overview - The Guangzhan High-speed Railway spans 401 kilometers, making it the longest and largest railway project in Guangdong Province [1]. - The section constructed by China Railway 25th Bureau covers 10.38 kilometers, including two major bridges and two segments of roadbed, with a total length of 8.2 kilometers of double-track ballastless railway [1]. Group 2: Construction Details - The construction of ballastless track is a critical phase that requires stringent control over geometric dimensions and precision, with track slab size deviations needing to be within 2 millimeters [3]. - The project employs a track slab framework method to enhance construction efficiency and maintain precision control at the millimeter level [3]. Group 3: Strategic Importance - The Guangzhan High-speed Railway is designed for a maximum speed of 350 kilometers per hour and is a key component of the national "Eight Vertical and Eight Horizontal" high-speed railway network [3]. - Upon completion, the railway will significantly reduce travel time between the western Guangdong region and the Guangdong-Hong Kong-Macao Greater Bay Area, allowing for a 90-minute journey from downtown Guangzhou to downtown Zhanjiang [3].

Group 1 - The first prefabricated box girder of the Zhangshan High-speed Railway was successfully completed, marking a new construction phase for the bridge engineering along the entire line [1][3] - The Zhaoan beam factory, built by Southeast Coastal Railway Fujian Co., Ltd. and constructed by China Railway Bridge Bureau Group, integrates advanced information technologies such as BIM and GIS into the production process [3] - The intelligent system at the Zhaoan beam factory enhances production quality, efficiency, and management levels through real-time data collection and AI analysis, facilitating rapid information transfer between on-site construction and management [3] Group 2 - The Zhangshan High-speed Railway is a key component of the national "Eight Vertical and Eight Horizontal" high-speed railway network, specifically the "Coastal Corridor," which connects major cities in the Guangdong and Fujian provinces [5] - The completion of the project is expected to accelerate communication between the Guangdong-Hong Kong-Macao Greater Bay Area and the Haixi Economic Zone, enhancing connectivity and economic collaboration between Fujian and Guangdong [5]

Core Viewpoint - Zhanjiang is actively developing a modern high-speed railway network to enhance connectivity in the region, with multiple key projects underway to establish a comprehensive transportation system [1]. Group 1: High-Speed Railway Projects - The construction of the Guangdong section of the He-Zhan high-speed railway has commenced in June 2023, following the completion of the bidding process [3]. - The He-Zhan high-speed railway will connect from Hepu Station in Guangxi to Zhanjiang, integrating with the Shenzhen-Zhanjiang railway, and is a crucial part of China's "eight vertical and eight horizontal" high-speed railway network [3]. - The project is expected to be completed and operational by the end of 2028, with a planned construction period of 1,310 calendar days [4]. Group 2: Zhanjiang North Station - The construction of Zhanjiang North Station for the Guang-Zhan high-speed railway is nearing completion, with all station house and sign installations finished [2]. - The station is currently undergoing metal roofing and interior decoration [2]. Group 3: Zhanhai High-Speed Railway - The Zhanhai high-speed railway, connecting Zhanjiang to Haikou, is a significant component of the national high-speed railway network and aims to enhance connectivity between Hainan Province and the Guangdong-Hong Kong-Macao Greater Bay Area [5]. - The Zhanhai high-speed railway will link with Zhanjiang North Station and connect to the deep Zhan railway, Guang-Zhan high-speed railway, and He-Zhan high-speed railway, facilitating access to the Xuwen Port area and the Hainan circular high-speed railway [6]. - The project aims to start construction by the end of 2025 [7].

Core Viewpoint - The construction of the Zhangshan High-speed Railway Dongshan Cross-sea Bridge has entered a new phase, marked by the successful completion of the bridge deck and the first offshore pier, indicating accelerated progress in the project [1][2]. Group 1: Project Overview - The Dongshan Cross-sea Bridge spans 20.26 kilometers, connecting Yunxiao County, Dongshan County, and Zhao'an County in Fujian Province, and is a key control project of the Zhangshan High-speed Railway [1]. - The bridge is constructed by Southeast Coastal Railway Fujian Co., Ltd., with the China Railway Bridge Bureau Group responsible for the construction [1]. Group 2: Construction Techniques and Challenges - The project team utilized advanced technologies, including the Beidou satellite positioning system, to enhance the precision of pile driving operations, ensuring that the construction machinery followed predetermined paths [2]. - The team overcame challenges posed by complex local hydrological conditions and significant tidal differences through an intelligent monitoring system that tracked tidal changes, optimizing the construction schedule [2]. Group 3: Impact on Regional Connectivity - Upon completion, the Zhangshan High-speed Railway will integrate with the Fuzhou-Xiamen High-speed Railway and the Shantou-Shantou High-speed Railway, enhancing the regional transportation network and promoting resource integration between Guangdong and Fujian provinces [2].

Core Points - The successful completion of the last bridge deck panel marks the joining of the Zhangshan High-speed Railway Dongshan Cross-sea Bridge trestle [1][3] - The Dongshan Cross-sea Bridge spans 20.26 kilometers, connecting Yunxiao County, Dongshan County, and Zhao'an County in Fujian Province, and is a key control project of the Zhangshan High-speed Railway [3][5] - The trestle bridge, measuring 9.4 kilometers, serves as an important construction "auxiliary road" and "platform" for the main bridge [3][5] Construction Details - The project faced complex construction conditions, including strong winds and seawater erosion, which were overcome through technical innovations and precise construction methods [5] - The project team utilized the BeiDou satellite positioning system to ensure accurate placement of steel pipe piles, enhancing construction precision [5] - The completion of the trestle bridge allows for a significant reduction in construction distance from 20 kilometers to 9 kilometers, accelerating the overall bridge construction process [7] Strategic Importance - The Zhangshan High-speed Railway is a vital part of the national "eight vertical and eight horizontal" high-speed railway network, enhancing connectivity between the Yangtze River Delta, Guangdong-Hong Kong-Macao Greater Bay Area, and Southeast coastal city clusters [7] - The project is expected to promote the integration of industrial resources between Guangdong and Fujian provinces and facilitate regional economic and social development [7]

Core Insights - The successful completion of the 2.334-kilometer railway line in Yuncheng County marks a significant milestone for the Xiongshan High-speed Railway project, enhancing logistics and railway transport capabilities in the region [1][2] - The Xiongshan High-speed Railway spans 26.8 kilometers between Liangshan and Yuncheng, featuring two stations and various construction tasks, which have been executed with strict adherence to safety and quality standards [2] Group 1 - The railway line was officially closed on May 25, with over 300 workers completing critical construction tasks within 210 minutes [1] - The newly constructed freight yard at Yuncheng Station is designed to boost railway transport and local economic development, following a "logistics park model" [1] - The construction faced multiple challenges, including land acquisition, high construction standards, and safety pressures, which were effectively managed through coordinated efforts [1] Group 2 - The Xiongshan High-speed Railway connects key high-speed rail lines, covering a total length of 551.97 kilometers and designed for speeds of up to 350 kilometers per hour [2] - This railway is a crucial part of the national "eight vertical and eight horizontal" high-speed rail network, serving the strategic development of the Xiong'an New Area and facilitating economic collaboration in the Beijing-Tianjin-Hebei and surrounding regions [2] - The project has undergone extensive construction activities, including 826 instances of tertiary construction and 2 instances of secondary key construction, ensuring high-quality and efficient completion [2]