渝昆高铁多数线路位于地势复杂的山区。中国铁路成都局集团有限公司供图 渝昆高铁全线建成通车后，从重庆到昆明将从目前的5小时缩短至最快2小时左右。成宜高铁衔接渝昆高铁， 将形成成都到昆明全程时速350公里的高铁大通道，两地通行时间3小时左右。（记者 寇敏芳） ●渝昆高铁全线建成通车后，从重庆到昆明将从目前的5小时缩短至最快2小时左右。成宜高铁衔接渝昆高 铁，将形成成都到昆明全程时速350公里的高铁大通道，两地通行时间3小时左右 10月8日11时许，宜宾市筠连县，一榀长32米、重约790吨的箱梁稳稳落在董家湾中桥上，标志着重庆至昆明 高铁宜宾至盐津南段（下称渝昆高铁川滇段）箱梁全部架设完成，为渝昆高铁全线按期通车奠定基础。 渝昆高铁是我国"八纵八横"高铁网京昆通道的重要组成部分，途经重庆市、四川省、贵州省和云南省，全长 约700公里，设计时速350公里。全线分段建设，其中，渝宜段（重庆西至宜宾）已于2024年9月29日开通运营，川 滇段（宜宾至盐津南）、云南段（盐津南至昆明南）正在加紧建设中。 中铁八局渝昆高铁项目部常务副经理邓磊介绍，箱梁在无砟轨道施工和铺轨后将成为高铁轨道的"路基"。中 铁八局在渝昆高铁川滇段共 ...

中新网昭通9月30日电 (胡国英 韩胜 张琛魁)9月30日，由中国铁建大桥局承建的渝昆高铁重难点控制性 工程三股水特大桥合龙。 渝昆高铁三股水特大桥合龙。张琛魁 摄 中国铁建大桥局渝昆高铁项目部现场负责人高子行介绍，在基础施工环节，针对陡峭地形，他们采用精 准的测量定位和特殊的钻孔桩施工技术，让桥墩基础在复杂的地质条件下也能保持稳固。在高墩施工方 面，运用液压爬模技术，实现了高效、安全的高空作业，有效保证了墩身施工质量和进度。在混凝土浇 筑方面，采用了智能化温控系统，确保了大体积混凝土的施工质量。 9月30日， 随着三股水特大桥合龙，渝昆高铁桥梁施工完成97%。渝昆高铁全长约700公里，其中云南段长388.6公 里，设计时速350公里，是云南省内首条时速达350公里的高速铁路，全线建成通车后，重庆到昆明的行 车时间将大幅压缩，对构建新发展格局、促进沿线地区经济社会高质量发展具有重要意义。(完) 三股水特大桥位于云南省昭通市盐津县境内，由中铁二院勘察设计，为主跨168米、全长546米大跨度高 墩桥梁。桥梁跨越高山峡谷区，两侧陡立，断面呈"V"字形，地形地质条件极为复杂，施工难度极大， 是渝昆高铁全线重难点控制性 ...

记者从京昆高速铁路西昆有限公司获悉，9月30日上午，渝昆高铁建设取得阶段性重要成果：由中国铁建大桥局承建的渝昆高铁全线重难点控 制性工程三股水特大桥顺利合龙。 据介绍，三股水特大桥位于云南省昭通市盐津县境内，由中铁二院勘察设计，为主跨168米、全长546米大跨度高墩桥梁。桥梁跨越高山峡谷 区，地形地质条件极为复杂，施工难度极大。 为了攻克建设难关，京昆高速铁路西昆有限公司和中国铁建大桥局等单位紧密协作，针对复杂地形和特殊梁型，组织力量反复调整优化设计 方案，多次组织业内专家进行研讨，通过方案比对、数据分析，结合施工环境及特点，选择最优方案推进陡坡抗滑桩施工，为承台、墩身及桥梁 合龙施工创造了良好条件。 据了解，渝昆高铁全长约700公里，其中云南段长388.6公里，是云南省内首条设计时速达350公里的高速铁路，待全线建成通车后，重庆到昆 明的行车时间将大幅压缩。（记者丁怡全） 图为三股水特大桥。（受访对象供图） ...

Core Points - The Bianghui Tunnel, a key project of the Yukun High-speed Railway, has successfully completed its construction, marking it as the first super-long tunnel over 20 kilometers in the southwest region of China [1] - The tunnel, located in Yiliang County, Zhaotong City, Yunnan Province, features a dual-tube single-line design and is classified as a high-risk tunnel due to its complex geological conditions [1] - With the completion of the Bianghui Tunnel, the overall tunnel construction progress in Yunnan for the Yukun High-speed Railway has reached 85%, and over 95% of bridge and tunnel construction has been completed [1] Industry Progress - The Yukun High-speed Railway is entering a critical construction phase, with the main body of the roadbed, bridges, and tunnels nearly completed [1] - The project is now accelerating the construction of the "four electrics" and station building works, preparing to fully enter the ballastless track construction phase [1]

Group 1 - The Yukun High-speed Railway's Binghui Tunnel, measuring 21.17 kilometers, has successfully been completed, marking the first tunnel over 20 kilometers in the entire Yukun High-speed Railway project [1] - The Binghui Tunnel is located in Yiliang County, Zhaotong City, Yunnan Province, and is classified as a high-risk tunnel, making it a key control project for the Yukun High-speed Railway [1] - The Songming Beam Yard, the largest beam yard for the Yukun High-speed Railway, has successfully completed its beam production tasks, laying a solid foundation for subsequent track-laying operations [1] Group 2 - The Songming Beam Yard is equipped with ten beam production platforms and 53 double-layer storage platforms, with a maximum storage capacity of 116 beams, primarily responsible for the prefabrication of 420 box beams [1] - The project team from China Railway Fourth Bureau has implemented a smart beam yard information management system, enhancing production efficiency through mechanization, automation, and intelligent processes [2] - The Yukun High-speed Railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, which will significantly reduce travel time between Chongqing and Kunming, enhancing transportation convenience in the southwest region and promoting regional economic collaboration [2]

Group 1 - The Beijing Subway Line 22 (Pinggu Line) has completed the construction of the lower bridge structure in the Hebei section, marking a significant milestone in the project [1] - The line is approximately 30 kilometers long and includes 5 stations and 6 sections, which will reduce commuting time from Langfang's northern three counties to Beijing's sub-center to as little as 9 minutes [1] - The construction faced challenges due to complex environmental conditions, including liquefied soil layers, but the project team successfully implemented advanced construction techniques [1] Group 2 - The Ningxia-Hunan ±800 kV UHVDC transmission project has officially commenced operation, representing a key project in China's 14th Five-Year Plan for power development [2] - This project is the first approved UHV transmission corridor primarily for transporting renewable energy from the "Shagehuang" wind and solar base, with a total investment of 28.1 billion yuan [2] - The project enhances Ningxia's external transmission capacity to 20 million kilowatts, significantly improving the region's ability to utilize renewable energy [2] Group 3 - The Yukun High-speed Railway's key control project, the Binghui Tunnel, has successfully been completed, marking the first tunnel over 20 kilometers to be finished on the line [2] - The tunnel, located in Yunnan Province, utilized innovative construction methods to manage complex geological conditions and reduce risks [2] - With the completion of the Binghui Tunnel, 85% of the tunnels in Yunnan for the Yukun High-speed Railway have been completed, which is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network [2]

建设过程中，中铁五局采用"2横洞+2斜井+1平导"施工方案和中间小导洞先行贯通措施，在施工高峰期，多达22个掌子面同步进行掘进 作业。针对工程地质难题，建设者构建起"注浆+管棚支护+智能排水"的立体防线，将风险降至可控范围，月进尺最高达到135米，成功实现 了单线隧道快速高效施工。 渝昆高铁全长约700公里，其中云南省境内长388.6公里，是云南省内首条设计时速350公里的高速铁路。渝昆高铁全线建成通车后，重 庆到昆明的行车时间将大幅压缩，极大地提升西南地区与全国的交通便利性，促进区域经济协同发展。（记者丁怡全） 炳辉隧道位于云南省昭通市彝良县境内，由中铁二院勘察设计、中铁五局承建，属一级高风险隧道，是渝昆高铁全线控制性工程。全 隧集低瓦斯、岩溶、软岩大变形等多种不良地质于一体，勘察设计和施工组织难度极大。 中铁二院渝昆高铁项目部副经理李济良说："我们通过超前地质预报与地质核查相结合，建立'事前预警、事中核查、事后确认'的工作 模式，为全隧安全贯通提供保障。" 记者从京昆高铁西昆公司获悉，8月19日，我国"八纵八横"高铁网京昆通道重要组成部分渝昆高铁建设取得重大突破，全长21.17公里的 炳辉隧道贯通，这是渝 ...

炳辉隧道位于云南省昭通市彝良县境内，采用双洞单线设计，地质条件复杂，属一级高风险隧道，是渝昆高铁全线控制性工 程。隧道建设期间，软岩大变形、涌水等多种复杂地质情况频繁发生，参建单位提出37项应急解决方案，有效提升了施工作业效 率。 央视网消息：8月19日，渝昆高铁控制性工程——全长21.17公里的炳辉隧道顺利贯通，这是渝昆高铁贯通的首座超20公里特长 隧道，也是我国西南地区首座贯通的20公里以上时速350公里的高速铁路特长隧道。 渝昆高铁作为我国"八纵八横"高铁网京昆通道的重要组成部分，全长约700公里，全线建成通车后，重庆到昆明的行车时间将 大幅压缩，极大地提升西南地区与全国的交通便利性，促进区域经济协同发展。 ...

Core Points - The completion of the Binhui Tunnel, measuring 21.17 kilometers, marks a significant milestone for the Yukun High-Speed Railway, being the first tunnel over 20 kilometers in length in Southwest China [1][3] - The Yukun High-Speed Railway spans approximately 700 kilometers, with 388.6 kilometers located within Yunnan Province, and is designed for a maximum speed of 350 kilometers per hour [6] Summary by Sections - **Tunnel Completion**: The Binhui Tunnel, located in Yiliang County, Zhaotong City, Yunnan Province, is a dual-tube single-line design and is classified as a high-risk tunnel due to its complex geological conditions [3] - **Construction Progress**: With the completion of the first tunnel over 20 kilometers, the overall tunnel completion rate in Yunnan Province for the Yukun High-Speed Railway has reached 85%, and over 95% of bridge and tunnel construction is completed [4] - **Future Impact**: Once operational, the Yukun High-Speed Railway will significantly reduce travel time between Chongqing and Kunming [6]

Core Points - The last tunnel of the Yukun High-speed Railway's Sichuan-Yunnan section, the Junlian Tunnel, successfully broke through on August 15, marking the completion of all 28 tunnels in this section [1] - Once completed, the Yukun High-speed Railway will enable travel from Chengdu to Kunming in approximately 3 hours [1] Group 1 - The Junlian Tunnel is located between Yibin County in Sichuan and Yanjin County in Yunnan, featuring complex geological conditions and is a key project for the Yukun High-speed Railway [1] - The tunnel measures 7,888 meters in length with a maximum depth of 635 meters, and 84% of the surrounding rock is classified as level four and five, indicating significant construction challenges [1] - Advanced technologies such as geological radar scanning and advanced horizontal drilling were utilized to predict risks associated with karst water and gas distribution, leading to substantial cost savings in construction [1] Group 2 - The maximum monthly excavation rate for the Junlian Tunnel reached 140 meters, and the tunnel was completed ahead of schedule with a focus on safety [1] - Currently, the roadbed engineering for the Sichuan-Yunnan section is 99% complete, while bridge engineering is 92% complete, with electrical and station construction progressing rapidly [1]