Group 1: Project Progress - The construction of the Yichang to Fuling section of the Shanghai-Chongqing-Chengdu Yangtze River High-Speed Railway has entered a new phase with the completion of the first pile foundation for the main pier of the Beiyan Village Super Bridge, marking the start of the main construction phase for this bridge [1][3] - The Chengdu-Chongqing Central Line High-Speed Railway has made significant progress with the completion of the contact network installation over the Chengdu-Chongqing Railway, indicating important advancements in the project [5][8] Group 2: Technical Details - The Beiyan Village Super Bridge spans 778.994 meters and consists of 174 pile foundations and 22 piers, with complex geological conditions requiring innovative construction techniques [3][6] - The construction of the pile foundations involves a diameter of 2 meters and a length of 35 meters, requiring 109.90 cubic meters of concrete, with high safety and environmental control measures in place due to proximity to operational railway lines [6][8] Group 3: Economic and Social Impact - Upon completion, the Shanghai-Chongqing-Chengdu Yangtze River High-Speed Railway will create a new high-speed rail corridor between the Sichuan-Chongqing region and the Central China region, significantly enhancing travel convenience for local residents and contributing to the high-quality development of the Yangtze River Economic Belt [5] - The Chengdu-Chongqing Central Line High-Speed Railway will connect with multiple lines, improving the transportation network in the Chengdu-Chongqing area and facilitating the construction of the Chengdu-Chongqing Twin City Economic Circle [9]

人民财讯1月11日电，据京昆高铁西昆公司消息，1月10日上午，经过建设者1500多天的艰苦鏖战，由中 铁十二局承建的渝昆高铁控制性工程——华山松隧道实现安全贯通。至此，云南境内53座隧道仅剩最后 一座，为全线建成开通奠定了坚实基础，标志着渝昆高铁全线建设进入最后冲刺阶段。 ...

Core Viewpoint - The Huashansong Tunnel, a key project of the Yukun High-speed Railway, has successfully completed its construction after over 1500 days of challenging work, with only one tunnel remaining to be completed in the Yunnan section of the railway [1][3] Group 1: Project Details - The Huashansong Tunnel is located in the Yunnan Province, with a total length of 16.4 kilometers, classified as a level I high-risk tunnel and the second longest single-hole double-track tunnel along the Yukun High-speed Railway [1][3] - The geological conditions of the tunnel are extremely complex, with nearly 90% of the surrounding rock classified as level IV and V, and it traverses 23 fault lines and areas with developed karst features, posing significant construction challenges [1] Group 2: Construction Techniques - The construction team utilized advanced techniques such as advanced horizontal drilling, deepening blast holes, and transient electromagnetic methods for precise geological detection, allowing them to anticipate geological changes [3] - A combined construction approach of "circular excavation, reserved core soil, and staged support" was adopted, along with surrounding radial grouting and advanced small conduit + pipe shed techniques to successfully overcome challenges related to surrounding rock instability [3] Group 3: Project Progress - The overall construction of the Yukun High-speed Railway has entered a critical phase, with an average of 11,000 construction personnel and 1,300 large machinery units deployed daily to expedite tunnel engineering, ballastless track, and post-station construction [3] - The Yukun High-speed Railway spans approximately 700 kilometers, with the Yunnan section measuring 388.6 kilometers, marking the first high-speed railway in Yunnan with a speed of 350 kilometers per hour, significantly reducing travel time between Chongqing and Kunming upon completion [3]

据介绍，华山松隧道地处云南省会泽县境内，全长16.4公里，属于一级高风险隧道。该隧道地质条件极 为复杂，穿越23条断层以及岩溶发育地段，围岩破碎，一旦遇水便极易软化膨胀发生溜塌、塌方等险 情，给施工带来极大挑战。"我们采取'环形开挖、预留核心土、分台阶支护'相融合的方案，结合隧道 特点进行施工，成功克服围岩失稳变形的建设难题。"中铁十二局渝昆高铁技术负责人马国栋说。 记者从京昆高铁西昆公司获悉，1月10日上午，由中铁十二局承建的渝昆高铁控制性工程华山松隧道实 现安全贯通，为全线建成开通奠定了坚实基础。 （文章来源：新华社） 渝昆高铁全长约700公里，其中云南段长388.6公里，是云南省内首条时速350公里的高速铁路，全线建 成通车后，重庆到昆明的行车时间将压缩至两个半小时左右，对推动沿线地区经济社会高质量发展具有 重要意义。目前，渝昆高铁云南段建设全面进入冲刺阶段，全力推进隧道工程、无砟轨道和站后工程建 设。 ...

全国首例在既有运营铁路上增设的全封闭声屏障工程——达成铁路遂宁段全封闭声屏障项目，于近日完成全部安 装工作。该工程位于达成铁路线遂宁站东侧，是新建成达万高铁配套改造工程的关键部分，全长967米，地处居民 密集区、场地狭小，吊装超40米高，仅能在每周四凌晨"天窗点"作业。中铁十局历时10个月，在64个"天窗点"完 成3300吨钢架、3万平方米屏体的安装。 刘昌松 摄（C视觉） ...

Core Viewpoint - The installation of traction transformers for the Chengyu Middle Line High-Speed Railway in Sichuan has been successfully completed, marking a significant step towards the commissioning of the railway's power supply system [1] Group 1: Project Progress - The last traction transformer, weighing 39.6 tons, has been installed at the Lezhi Traction Substation in Sichuan Province, completing the installation of all traction transformers along the Sichuan section of the Chengyu Middle Line High-Speed Railway [1] - A total of 12 traction transformers have been deployed at three traction substations located in Anyue, Lezhi, and Jianzhou, forming the core framework of the railway's power supply system [1] Group 2: Importance of Traction Transformers - Traction transformers are described as the "heart" of the railway traction power supply system, responsible for converting high-voltage electricity from the national grid into power suitable for electric locomotives [1] - The precision and quality of the installation of these transformers are critical for ensuring the safety, stability, and efficiency of future railway operations [1]

Core Insights - In 2025, the provincial development and reform system achieved breakthroughs in securing funding, projects, and policies [1] Funding - The province secured over 41.7 billion yuan in central funding, including long-term special bonds and central budget investments, marking a 41.6% increase [3] - In the social sector, 7.28 billion yuan was secured to support 249 urban renewal projects [3] Major Projects - The approval and commencement of the Qian-Gui Railway second line and the national approval of feasibility reports for the Yulong and Yingwu reservoirs were significant achievements [3] - The province ranked among the top in the nation for the number of approved computing infrastructure projects [3] Policy Initiatives - The province successfully included the Guiyang airport-type national logistics hub and the Zunyi national backbone cold chain logistics base in the national construction list [3] - The Qianxinan Prefecture was included in the first batch of high-quality outdoor sports destination cities in the country [3] Investment Trends - The "5+3" major projects accounted for approximately 70% of the total provincial investment in the past year [3] - Private investment growth continued to outpace overall investment growth, increasing its share to 39.4% [3] Reforms and Economic Development - The development and reform department made substantial progress in reducing electricity prices and logistics costs [3] - A special rectification of malicious competition in investment attraction was conducted, leading to the establishment of provincial centers for private and regional economic development [3] Employment and Income - The implementation of labor-for-work projects helped 196,000 rural workers increase their income by over 10,000 yuan each [3] - The province secured 7.175 billion yuan for 129 social sector projects, facilitating the construction of student dormitories at Guizhou University and five other quality provincial universities [3] - All phase two projects of five national regional medical centers commenced construction [3]

央视网消息：眼下，各地工程在加速推进。在江苏南京，沪宁合高铁迎来南京特大桥跨滁河斜拉桥合龙及转体梁转体等重要工程节点，为 全线贯通奠定基础。 1月8日下午，在江苏南京，超百米宽的滁河上方，沪宁合高铁跨滁河斜拉桥完成了最后一段钢箱梁吊装，顺利合龙。该桥及接线工程位于 长江北岸，全长约14公里，于2023年启动建设。 不仅是桥梁合龙，就在1月7日，沪宁合高铁的另一个控制性工程——南京特大桥跨京沪铁路转体梁也顺利完成转体，成功跨越京沪铁路运 营干线，与在建铁路主线精准对接。 记者从施工方了解到，截至目前，沪宁合高铁南京特大桥工程的重要工程节点已顺利完工，下一步将转入架梁冲刺阶段。沪宁合高铁起自 上海，经江苏多市进入安徽，线路全长约554公里，设计时速350公里。铁路建成后，将在沪苏皖三地间建起一条新的快速通道，助力长三角一 体化高质量发展。 大连长海大桥项目全长25.5公里，跨海段19公里、陆域段6.5公里、全线采用双向4车道。项目建成后，将进一步完善国家公路体系，有力 助推辽宁海洋经济高质量发展。 湖南：高速公路服务区重卡充换电站加速投入使用 日前，湖南首座高速公路服务区重卡充电站——醴娄高速湘乡南服务区重卡充电 ...

新建上海至南京至合肥高速铁路控制性工程——南京特大桥跨滁河斜拉桥顺利合龙，标志着该斜拉桥正 式转入桥面系施工阶段。作为国家"八纵八横"高速铁路网沿江通道的重要组成部分，沪宁合高铁建成 后，将优化沿长江地区铁路网布局，助力长三角一体化高质量发展。（新华社） ...

Core Viewpoint - The successful completion of the Nanjing Grand Bridge's main span marks a significant milestone in the construction of the Shanghai-Nanjing-Hefei high-speed railway, transitioning to the bridge deck construction phase [1] Group 1: Project Overview - The Nanjing Grand Bridge and its connecting works span a total length of 14.186 kilometers, with the completed main span of the cross-Chu River cable-stayed bridge measuring 502 meters [3] - The bridge features a dual-tower, five-span hybrid beam cable-stayed design, located in the complex construction environment of the Chu River scenic area in Nanjing [3] Group 2: Technical Innovations - A specialized technical team was formed to address construction challenges, resulting in the successful application for five patents, including one invention patent [5] - The project team optimized the use of anchor cable pipe center positioning auxiliary devices to significantly enhance positioning accuracy and operational efficiency [5] - The development of an intelligent bridge deck hoisting construction method, combined with modular design and smart monitoring, improved the assembly precision and efficiency of the steel box beams, saving approximately 2.3 million yuan in project costs [6] Group 3: Safety and Environmental Measures - A comprehensive intelligent risk prevention system was established to monitor construction processes, utilizing stress monitoring for tower cranes and bridge decks, as well as harmful gas concentration monitoring [8] - The project employed BIM technology for three-dimensional construction simulation to anticipate and mitigate safety risks associated with high-altitude operations and large component hoisting [8] - Eco-friendly construction practices were implemented, including the establishment of ecological protective slopes and measures to control dust and noise pollution, ensuring minimal impact on local residents and aquatic life [10] Group 4: Strategic Importance - The Shanghai-Nanjing-Hefei high-speed railway is a crucial segment of the national "Eight Vertical and Eight Horizontal" high-speed rail network, facilitating major passenger flows and enhancing connectivity between urban agglomerations [12] - The completion of this project will create a new rapid transit corridor among the Shanghai, Nanjing, and Hefei metropolitan areas, contributing to the high-quality development of the Yangtze River Economic Belt and the integration of the Yangtze River Delta [12]