Core Viewpoint - The opening of the Xi'an to Yan'an high-speed railway marks a significant milestone for the Shaanxi revolutionary area, enhancing regional economic development and connectivity, while contributing to China's high-speed rail network expansion [4][7]. Group 1: High-Speed Railway Details - The Xi'an to Yan'an high-speed railway officially opened on December 26, with a total length of 299 kilometers and a design speed of 350 km/h, making it the highest-speed railway crossing the Loess Plateau [7]. - The railway reduces travel time from Xi'an to Yan'an to 68 minutes, a significant decrease of 62 minutes compared to the fastest previous service [7]. - The line features 47 tunnels and 67 bridges, with a bridge-tunnel ratio of 91%, showcasing advanced engineering solutions to navigate complex geological conditions [7]. Group 2: Economic and Social Impact - The high-speed railway is expected to boost local economies, particularly in the apple industry of Luochuan, where the improved transport will facilitate faster distribution of apples, enhancing sales opportunities [10][11]. - The railway's opening is seen as a catalyst for tourism, making travel more convenient and promoting local agricultural products, thus expanding the market for local farmers [11]. - The high-speed connection is anticipated to create a "1-hour economic circle," significantly improving the quality of life for residents in the region [9][11]. Group 3: Community Sentiment - Local residents express excitement and optimism about the railway, viewing it as a transformative development that fulfills long-held aspirations for better connectivity [8][9]. - The emotional connection to the railway is highlighted by personal stories, such as a 92-year-old man who has long awaited this moment, symbolizing the broader community's hopes for progress [8].

●成达万高铁预计2027年建成通车，届时成都至上海、北京的旅行时间将缩短至7小时以内 12月28日，新建成都至达州至万州高速铁路（简称成达万高铁）重点工程——光明隧道贯通。目前，全线隧 道工程设计136座、贯通132座，已进入无砟道床、站房工程和四电工程施工阶段。 光明隧道位于四川省开江县和重庆市开州区境内，处于连通川渝的关键节点，全长超8公里，设计时速350公 里，为单洞双线低瓦斯隧道。全隧岩体破碎，围岩稳定性差，存在突泥涌水、瓦斯及有害气体超限等高危因素， 作业环境复杂、施工难度大、安全风险高。项目管理团队采用安全等级更高的煤矿专用炸药和数码雷管进行爆 破，同时在隧道内增强通风、监测等手段，多维度、全方位保障隧道施工安全。此外，施工中采用多种智能化工 装设备，提升施工效率。 "隧道建设用了3年多。"成达万高铁公司达州建设指挥部指挥长张宗伟介绍，600余名建设者在4个工作面同步 施工，成功攻克隧道突泥涌水、瓦斯及有害气体超限等诸多困难。目前，成达万高铁全线路基工程完成约4600万 立方米、占比达98.87%，桥梁桩基、承台、墩身全部完成，4座转体桥已完成3座。 12月28日，成达万高铁光明隧道贯通。成达万高 ...

中新网重庆12月28日电 (张旭)记者从成达万高速铁路有限责任公司获悉，12月28日，随着最后一次开挖 爆破，新建成都至达州至万州高速铁路(以下简称"成达万高铁")重点工程——光明隧道顺利贯通。 施工过程中，该隧道存在突泥涌水、瓦斯及有害气体超限等高危因素，作业环境复杂，施工难度大，安 全风险高。对此，项目建设团队采用安全等级更高的煤矿专用炸药和数码雷管进行爆破，选用透气系数 更低的气密性混凝土进行围岩封闭，引进湿喷机械手、拱架安装机等机械设备，保障了施工安全与效 率。 据介绍，三年来，中铁北京工程局600余名建设者排除万难、奋力攻坚，分隧道进口、出口和横洞大里 程、小里程四个工作面同步施工，攻克诸多困难，圆满完成工程建设各项任务。 图为成达 万高铁光明隧道出口。成达万高速铁路有限责任公司供图 成达万高铁是中国"八纵八横"高铁网沿江通道的重要组成部分，线路建成后，将形成成都直达中原和京 津冀地区的便捷客运通道，极大便利沿线民众出行，促进沿线经济社会发展。(完) 图为成达 万高铁光明隧道建设现场。成达万高速铁路有限责任公司供图 成达万高铁光明隧道位于四川省开江县和重庆市开州区境内，恰好处于连通川渝的关键节点，隧 ...

转自：四川在线 四川在线记者 寇敏芳 12月28日，新建成都至达州至万州高速铁路（以下简称：成达万高铁）重点工程——光明隧道顺利贯通。目前，全线隧道工程设计136座，贯通132座，完成 占比近97%，全线已进入无砟道床、站房工程和四电工程施工阶段。 隧道贯通现场 中铁北京局成达万高铁指挥部指挥长陈双秦介绍，为应对煤层中蕴含的瓦斯和硫化氢等有害气体，项目管理团队采用安全等级更高的煤矿专用炸药和数码雷 管进行爆破，同时在隧道内增强通风、监测等手段，多维度、全方位保障隧道施工安全。此外，施工中还采用了多种智能化工装设备，提升施工效率，显著 降低劳动强度，确保了项目施工安全质量目标全面达优。 成达万高铁 成达万高铁光明隧道位于四川省开江县和重庆市开州区境内，恰好处于连通川渝的关键节点，全长超过8公里，设计时速350公里，为单洞双线低瓦斯隧道。 全隧岩体破碎，围岩稳定性差。同时，隧道存在突泥涌水、瓦斯及有害气体超限等高危因素，作业环境复杂，施工难度大，安全风险高。 隧道贯通 "隧道建设，我们用了3年多时间。"成达万高铁公司达州建设指挥部指挥长张宗伟介绍，600余名建设者分成四个工作面同步施工，成功攻克隧道突泥涌水、 瓦 ...

成达万高铁的光明隧道，它全长8468.8米，隧道位于四川省开江县与重庆市开州区交界处，地处连接川 渝的关键节点。它的贯通为成达万高铁全线建成奠定了重要基础。 （文章来源：央视新闻） 人民财讯12月28日电，沿江高铁通道是我国"八纵八横"高铁网的重要组成部分，是上海至成都的东西向 骨干通道。今天（28日）上午，十四五重点工程、沿江高铁通道在建的成达万高铁，传来了最新建设进 展。连通川渝之间的光明隧道全线贯通，这也是成达万高铁首条贯通的特长隧道，全长超8公里。 ...

Core Viewpoint - The opening of the Xi'an to Yan'an high-speed railway marks a significant development in China's high-speed rail network, enhancing connectivity to the revolutionary site of Yan'an and contributing to the "Eight Vertical and Eight Horizontal" high-speed rail framework [3]. Group 1 - The Xi'an to Yan'an high-speed railway officially commenced operations on December 26, 2023 [3]. - The railway spans a total length of 299 kilometers and is designed for a maximum speed of 350 kilometers per hour, making it the highest-speed railway traversing the Loess Plateau [3]. - This railway is a crucial part of the Baotou, Yinchuan to Haikou route within China's high-speed rail network [3].

西渝高铁赵家普里河特大桥位于重庆市开州区境内，全长1044米，共设27个墩台，是西渝高铁重庆境内 首座实现合龙的超千米特大桥。 西渝高铁是我国"八纵八横"高铁网北京至昆明的京昆通道和包头、银川至海口的包（银）海通道的重要 组成部分。 转自：贵州日报 12月27日，西安至重庆高速铁路（西渝高铁）赵家普里河特大桥完成最后一孔移动模架现浇梁浇筑作 业，实现全桥合龙。 新华/传真 （《西渝高铁赵家普里河特大桥合龙》由贵阳日报为您提供，转载请注明来源，未经书面授权许可，不 得转载或镜像。） 图为12月27日拍摄的西渝高铁赵家普里河特大桥建设现场（无人机照片）。 ...

Core Points - The Xi'an to Yan'an high-speed railway officially opened on December 26, marking the entry of the Shaanxi Northern Revolutionary Area into the high-speed rail era and pushing China's high-speed rail operating mileage beyond 50,000 kilometers [1][2] Group 1: High-Speed Rail Development - The Xi'an to Yan'an high-speed railway is 299 kilometers long with a design speed of 350 kilometers per hour, significantly reducing travel time between the two cities to as short as 68 minutes [1] - The railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, enhancing connectivity and integrating Yan'an into the "one-hour economic circle" of Xi'an [2] Group 2: Economic and Social Impact - The opening of the Xi'an to Yan'an high-speed railway is expected to accelerate the flow of people, goods, and information, contributing to regional economic development [2] - To promote tourism, all scenic spots in Ganquan County will offer free admission to high-speed rail passengers until the Spring Festival, along with free shuttle services [2] Group 3: National High-Speed Rail Statistics - As of the opening, China's high-speed rail operating mileage has increased by approximately 32% since the end of 2020, with 12,000 kilometers of high-speed rail expected to be completed during the 14th Five-Year Plan [2] - High-speed rail now accounts for about 80% of passenger traffic in China, with urban clusters within a 500-kilometer radius achieving 1 to 2-hour travel times [2]

Core Viewpoint - The opening of the Xi'an to Yan'an high-speed railway marks a significant milestone for the region, integrating Yan'an into the high-speed rail network and enhancing connectivity, with the total high-speed rail mileage in China exceeding 50,000 kilometers, maintaining its position as the world's leader in high-speed rail infrastructure [1][4]. Group 1: High-Speed Rail Opening - The Xi'an to Yan'an high-speed railway officially opened on December 26, 2023, with the first train departing from Yan'an Station [1]. - The train covers a distance of 299 kilometers in just 68 minutes, significantly reducing travel time compared to previous rail options [2]. Group 2: Historical Context and Development - The new high-speed rail line represents a culmination of decades of railway development in the region, with previous travel times from Yan'an to Xi'an taking as long as 14 hours in the past [3]. - The construction of the railway involved overcoming complex geological challenges, featuring 47 tunnels and 67 bridges, with a bridge-tunnel ratio of 91% [3]. Group 3: Economic and Social Impact - The high-speed railway is expected to activate economic development in the Shaanxi region, allowing for faster and more efficient transportation of goods and services, thus reducing costs for local businesses [4]. - The railway connects significant historical sites, enhancing tourism and educational opportunities related to the revolutionary history of Yan'an [4].

12月26日，随着C9309动车组从延安站缓缓驶出，延安这一革命圣地正式迈入高铁时代。 这条高铁，线路全长299.8公里，设计时速350公里，是国家高速铁路网包(银)海高速铁路通道的重要组 成部分。与正在建设的西渝高铁共同形成南北大通道，是陕西省"米"字形高铁网主骨架的重要构成。 沿线地形之复杂、区域城市之重要，都凸显了这条高铁的与众不同。 如，西延高铁穿越黄土高原沟壑区，全线桥隧比高达91%，施工过程中涉及长大坡道铺轨地段16处，最 大坡度比达30‰，铺轨施工难度大、工期紧，作业精度要求高，交叉施工作业频繁。 从区域布局来看，西延高铁绝非孤立工程，其背后有着重要的发展战略考量。 这条铁路对深入推进西部大开发战略、助力革命老区乡村振兴、加快构建包海高速铁路通道，进一步完 善优化国家高速铁路网络布局、提升陕西省区位优势和全国铁路网枢纽地位具有重要意义，更标志着国 家"八纵八横"高铁网在西北腹地的关键落子。 这一天，恰是毛泽东同志诞辰132周年纪念日。 西安至延安高速铁路(西延高铁)正式开通运营，也标志着我国高铁运营里程突破5万公里，世界上规模 最大、现代化水平最高的高速铁路网更加完善。 这条陕北革命老区的首条高 ...