Core Viewpoint - The Chengyu Middle Line High-Speed Railway in Sichuan has completed all bridge construction, marking a significant milestone as it enters the final stages of construction, including track laying and station works [1] Group 1: Construction Progress - The Chengyu Middle Line High-Speed Railway Sichuan section has six beam-laying bases responsible for the prefabrication and erection of 3,330 box girders [1] - All bridge construction has been completed, and 26 out of 27 mainline tunnels have been connected, with the key Shuan Tunnel shield section nearing completion [1] - The project is now entering the final phases of ballastless track, "four electrical" engineering, and station construction [1] Group 2: Project Importance and Timeline - The Chengyu Middle Line High-Speed Railway is a crucial part of the national "eight vertical and eight horizontal" high-speed rail network along the Yangtze River [1] - The main line is approximately 292 kilometers long, designed for a speed of 350 kilometers per hour, with a maximum operational speed expected to reach 400 kilometers per hour [1] - The railway is anticipated to be completed and operational by 2027, reducing travel time from Chengdu to Chongqing to 50 minutes [1]

成渝中线高铁是我国"八纵八横"高铁网沿江通道的重要组成部分，线路自重庆枢纽重庆北站起，向西经重庆市两江新区、沙坪坝区、璧山区、铜 梁区、大足区，四川省资阳市、成都市，引入成都枢纽成都站，正线全长292公里。 据中铁十九局施工负责人王福杰介绍，针对运梁线路长等难题，建设团队采用"分区推进、多点联动"的施工策略，增加运梁车施工点，保障架设 作业连续高效推进。 记者从长江沿岸铁路集团四川有限公司获悉，2月10日，在位于四川省资阳市乐至县的成渝中线高铁太平2号特大桥施工现场，随着中铁十九局建 设者将最后一孔箱梁精准架设落位，成渝中线高铁四川段桥梁建设全部完成，标志着成渝中线高铁建设进入全面冲刺阶段。 成渝中线高铁太平2号特大桥施工现场。（长江沿岸铁路集团四川有限公司供图） 成渝中线高铁建成通车后，将与多条高铁线路互联互通，完善成渝地区路网结构，进一步压缩成渝两地旅行时间，对助力成渝地区双城经济圈建 设具有重要意义。（记者谢佼、樊曦） 【纠错】 【责任编辑:焦鹏】 ...

经济观察网 据央视新闻客户端消息，2月6日，在陕西安康西站铺轨现场，随着最后一对钢轨精准落位 并完成锁定，西康高铁全线轨道铺设顺利完成，全面转入线上施工和联调联试准备阶段，为后续开通运 营奠定基础。 作为国家"八纵八横"高铁网的重要组成部分，西康高铁正线全长约171公里，设计时速350公里，线路自 西安东站南端引出，跨越浐河，穿越秦岭，经柞水、镇安、旬阳，接入安康西站，设西安东、牛背梁、 柞水西、镇安西、桐木、安康西6个车站。投运后，西安至安康的铁路运行时间将由目前的3小时缩短至 1小时以内，拉近关中城市群与秦巴山区的时空距离，助力沿线经济社会高质量发展。 西康高铁穿越秦巴山区，桥隧比高达94%。施工单位需在复杂的地质条件下完成双线全长共341.49公里 的钢轨铺设，面临道岔运输难、交叉作业多等严峻挑战。 ...

Core Viewpoint - The completion of the last box girder placement for the Yukun High-Speed Railway marks the transition into the final construction phase, highlighting the project's significance in China's high-speed rail network [1] Group 1: Project Overview - The Yukun High-Speed Railway is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network, connecting Chongqing West Station to Kunming South Station through multiple provinces [1] - The construction faced significant challenges, including complex logistics and high safety risks due to the proximity to existing rail lines and high-voltage power lines [1] Group 2: Technological Innovations - The construction team utilized the Beidou navigation system to enhance construction accuracy, implementing a "sky, ground, vehicle" integrated technology framework for millimeter-level path planning and dynamic correction [1] - The successful completion of the box girder placement involved 49 instances of line closure for construction activities, demonstrating effective project management and execution [1] Group 3: Future Implications - With the completion of the box girder placement, the Yukun High-Speed Railway is now entering the track laying and subsequent engineering phases, aiming to reduce travel time between Chongqing and Kunming to approximately two and a half hours upon operation [1]

求 新闻 中铁二十四局渝昆高铁现场负责人胡根和介绍，为顺利完成架梁任务，我们全力推进技术工艺创新，积极引入北斗路径导航系统，打造"天、地、车"三位一 体的技术架构，实现毫米级路径规划与动态纠偏，在经历49次线路封锁施工后，顺利完成309榀箱梁预制和架设作业。 2月3日9时45分，在位于云南省昆明市呈贡区的渝昆高铁施工现场，随着最后一榀箱梁精准架设落位，渝昆高铁桥梁建设全部完成，为后续铺轨及站后工程 施工奠定了坚实基础，标志着渝昆高铁建设进入全面冲刺阶段。 59 Inanaman and analogues and as and and and and and and and and and and and on the security of the subser ation of the see and the see in and the seat of the see and the sea mm REFORE mm mm mm mm HISTORY 最重力量 單 C P 直属重要 11 HIH ST 2000 met Real Brander 40 Transe in The Hall In The ...

转自：成都日报锦观 成渝中线高铁重庆段 14座隧道全线贯通 中梁山隧道顺利贯通。 记者从长江沿岸铁路集团重庆有限公司获悉，1月30日，随着最后一次掘进，成渝中线高铁全线控制性工程中梁山隧道顺利贯通，标志着成渝 中线高铁重庆段14座隧道全线贯通，为成渝中线高铁按期通车奠定了坚实基础。 成渝中线高铁是我国"八纵八横"高铁网沿江通道的重要组成部分，线路自重庆枢纽重庆北站起，向西经重庆市两江新区、沙坪坝区、璧山区、 铜梁区、大足区，四川省资阳市、成都市，引入成都枢纽成都站，正线全长292公里，设计时速350公里。 "当前，成渝中线高铁重庆段14座隧道已全部贯通，路基、桥梁下部结构及连续梁、箱梁预制全部完成，箱梁架设已完成90%，正开展无砟轨 道、站房及四电施工。"长江沿岸铁路集团重庆有限公司大足指挥部指挥长黄成华介绍说。 成渝中线高铁建成通车后，将与多条已建和在建线路互联互通，进一步压缩成渝两地旅行时间，完善成渝地区路网结构，为沿线群众出行提 供极大便利，对助力成渝地区双城经济圈建设、推动西部大开发新格局形成具有重要意义。 成都日报锦观新闻记者 陈煦阳 中铁成都局供图 ...

Core Viewpoint - The construction of the Shenjiang Railway, an important part of China's "eight vertical and eight horizontal" high-speed rail network, is progressing well, with significant milestones achieved in the construction of the cross-river bridge [1] Group 1: Project Overview - The Shenjiang Railway spans a total length of 116 kilometers, starting from the Shenzhen Xili Station and connecting five cities: Shenzhen, Dongguan, Guangzhou, Zhongshan, and Jiangmen [1] - The cross-river bridge, which is part of the Shenjiang Railway, measures 3,562 meters in length and has completed over half of its casting tasks [1] Group 2: Connectivity and Impact - Once completed, the railway will enable travel from Shenzhen to Jiangmen in under one hour and facilitate half-hour high-speed connectivity between Shenzhen and the Nansha Free Trade Zone in Guangzhou [1]

Core Viewpoint - The China Development Bank (CDB) is committed to supporting the construction of the "Eight Vertical and Eight Horizontal" high-speed rail network by leveraging its long-term financing advantages and collaborating closely with the China National Railway Group and its subsidiaries [1] Group 1: Project Support and Financing - By the end of 2025, the CDB aims to support high-speed rail projects with an operational mileage exceeding 42,500 kilometers, accounting for over 85% of the total operational mileage of the "Eight Vertical and Eight Horizontal" high-speed rail network [1] - The bank will utilize medium- and long-term loans and new policy-based financial instruments to support the construction of major railway projects, including the Shanghai-Chongqing and Chongqing-Kunming high-speed rail lines [1] Group 2: Strategic Focus and Future Plans - The CDB plans to enhance its role as a key bank for infrastructure construction, focusing on major railway engineering projects and improving the capacity of conventional railway trunk lines [1] - Future efforts will include supporting multi-modal transport and digital upgrades, as well as promoting the international expansion of high-speed rail [1]

龙泉特大桥东起成都市龙泉驿区洛带镇，西至成华区龙潭街道，全长14公里，是成渝中线高铁全线最长的桥梁。在跨越成华区新龙石路时，需 同时满足桥下道路通行净空和桥梁接入蜀安隧道的条件。受此影响，桥址处线路纵坡按25‰设计逐步下坡，坡度变化显著。该段无法采用高铁 连续梁常用的普通箱梁或悬灌连续梁跨越，经综合比选，最终采用1孔72米系杆拱桥结构，配合高位落梁施工工艺，跨越既有市政道路。该桥 型兼具适应大跨度、梁体高度低的特点，可最大限度保证桥下通行净空，从而在不中断桥下交通的情况下完成梁体施工。 长江沿岸铁路集团四川有限公司王学生表示，此次落梁顺利完成，不仅为后续同类型桥梁施工提供了宝贵经验，也为全线铺架工作顺利推进创 造了条件。目前，成渝中线高铁四川段建设正稳步推进，全线隧道已贯通25座，桥梁已合龙47座，工程已全面进入站房、"四电"工程及无砟轨 道施工的关键阶段。 成都日报锦观新闻记者 陈煦阳 受访单位供图 成渝中线高铁最长桥迎新进展 记者从长江沿岸铁路集团四川有限公司获悉，1月26日，经过150个小时的落梁作业，成都至重庆高速铁路（简称成渝中线高铁）龙泉特大桥 6000吨系杆拱桥平稳落位于桥墩之上，标志着成渝中线 ...

Core Points - The Jinjiagou Tunnel of the Yan'an to Yulin High-Speed Railway successfully completed its construction on January 27, marking a significant milestone in the project's development [1] - The tunnel, located in Yan'an, Shaanxi Province, is 703.39 meters long and presents high construction risks due to its location in a typical loess gully area [1] - The project employs advanced intelligent construction equipment, enhancing mechanization, automation, and standardization, which significantly improves construction efficiency and ensures safety and quality during winter [1] - The Yan'an to Yulin High-Speed Railway is a crucial part of the national "eight vertical and eight horizontal" high-speed rail network, reducing travel time from Xi'an to Yulin from over 5 hours to approximately 2 hours, which is vital for improving transportation infrastructure in the Shaanxi region and promoting high-quality economic development in revolutionary old areas [1]