转自：新快报 线关键控制性工程——西塱隧道施工现场。通讯员供图 广州站至广州南站联络 "为应对复杂工况，'天佑号'配备了伸缩性主驱动系统、高精度气液平衡系统、同步注射双液浆系统等 装备，搭配便捷式超前地质探测仪和高效运刀平台，实现了智能系统与先进装备的高效融合。"广州工 程建设指挥部高级工程师王宝佳介绍，"春节期间成立了五个专项小组，确保机器快速掘进。" "虽然春节不能回家，但让这台'大家伙'平稳运作施工，就是我们建设者的责任。"中铁十八局广南联络 线项目经理陈明说，"宿舍区挂满了红彤彤的福字，盾构机旁也贴上了窗花，现场还准备了年夜饭，我 们都感受到了'家'的温暖。" 据悉，广南联络线建成运营后，将实现广州南站至广州站15分钟直达，高效串联广州站、广州南站及广 州白云站三大核心交通枢纽，并连接京广高铁、广深港高铁等多条重要线路，将显著提升区域交通互联 互通水平，为粤港澳大湾区高质量发展提供坚实支撑。 编辑：郑健龙 新快报讯 记者许力夫 通讯员刘涵报道 马年新春，万家团圆之际，地下数十米深处却是一片热火朝天的 奋战景象。在广州站至广州南站联络线（简称"广南联络线"）关键控制性工程——西塱隧道施工现 场，"天佑号 ...

日前，由珠海市公共工程建设中心建设、中铁隧道局承建的粤港澳大湾区超大直径盾构跨海隧道——珠 海隧道正式通车运营。 为突破建设难关，项目团队深入研究工程地质，应用中铁隧道局盾构隧道智能建造体系，通过智能感 知、智能检测等一系列创新技术，实现施工全过程精准管控，从根本上解决了极软浅覆土地层掘进冒顶 漏浆、管片上浮控制难度大、成型隧道稳定性差等难题。同时，项目还研究总结了一套极软淤泥地层盾 构施工工法，引入绿色泥浆处理工艺，在提升施工效率的基础上，实现了盾构泥浆"零污染、零排放"。 珠海隧道工程是广东省、珠海市重点建设项目，隧道通车后将与既有珠海大桥共同构建"北桥南隧"立体 交通格局。来往车辆通过隧道仅需约5分钟时间，并可在台风等恶劣天气条件下正常通行。(经济日报记 者崔国强) 珠海隧道工程跨香洲、斗门、金湾三个区，是缓解珠海东西部交通压力的关键项目。工程主线起于珠海 大桥东，终于珠海大桥西，总长约5千米，与珠海大道主线相接。隧道道路规划为双向6车道，设计行车 时速80千米。其中，由中铁隧道局施工的隧道盾构段单线长2930米，采用"开拓号""奋进号"两台直径 15.01米的超大直径泥水平衡盾构施工。作为国内最具挑战 ...

"天佑号"大直径泥水平衡盾构机，最大开挖直径达12.86米，整机长度约125米，总重量超3200吨，堪 称"地下钢铁巨兽"。其负责施工的西塱隧道段，地质条件复杂，需长距离穿越岩层，并下穿水道及密集 构筑物，施工难度与安全风险极高。 为确保这条串联广州南站与广州站的联络线早日建成，项目团队以"数智赋能"为核心，依托智慧建造中 心构建数字化管控体系，通过BIM三维模拟掘进轨迹、高频次姿态复测，为春节期间安全高效推进提供 了坚实保障。 中铁十八局广南联络线项目经理陈明说："虽然春节不能回家，但守护好这台'大家伙'，让它平稳运作 施工，就是我们建设者的责任。宿舍区挂满了红彤彤的福字，盾构机旁也贴上了窗花，项目现场还准备 了年夜饭，大家虽然人在异乡，但我们也都感受到了'家'的温暖。" 中新网广州2月14日电 题：建设者春节坚守岗位 地下掘进大湾区交通动脉 国铁广州局广州工程建设指挥部高级工程师王宝佳介绍："西塱隧道全长约13.2公里，最大埋深61 米，'天佑号'盾构机承担区间长达4196米的掘进任务。为应对复杂工况，"天佑号"配备了伸缩性主驱动 系统、高精度气液平衡系统、同步注射双液浆系统等装备，搭配便捷式超前地质探测 ...

Group 1 - The core area of the collapse near the Qixin Road subway station in Shanghai occurred on February 12, with multiple departments involved in the repair work, including subway, telecommunications, and construction teams [2][6][9] - The repair efforts are primarily focused on water extraction and concrete injection, with no clear completion time provided [6][11] - The collapsed area was previously identified as a leakage zone and had been sealed off prior to the incident, with no casualties reported [9][14] Group 2 - The construction area is managed by China Railway Tunnel Group, a state-owned enterprise specializing in tunnel and underground engineering, with a comprehensive service system covering investment, design, research, construction, and operation [14] - The Shanghai Jianmin Line, also known as the Shanghai Metro Jianmin Line, is an under-construction urban express line approximately 44 kilometers long, with a total investment of 37.101 billion yuan and a construction period of about six years [14]

Group 1 - The core achievement of the "Deep Sea Space Station" is the successful application of domestically developed shield tunneling technology under high-pressure conditions, marking a significant advancement for future underwater tunnel construction and deep underground space development [1][2] - The "Deep Sea Space Station" consists of multiple functional modules, including the Ninghai (living) cabin, the Tanhai (shuttle) cabin, and the Zhenhai (control) cabin, capable of simulating seabed high-pressure environments with a maximum operational depth of 100 meters [1][2] - The project has successfully completed 22 consecutive days of operations, allowing for the inspection and replacement of 46 cutting tools, significantly enhancing the efficiency of the tunneling process [3] Group 2 - The Ningbo-Zhoushan Railway's Jintang underwater tunnel is a key project, with a total length of 16.18 kilometers, including an 11.21-kilometer underwater shield section, facing challenges from alternating soft and hard strata [2] - The "Deep Sea Space Station" integrates deep-sea saturation diving technology with underwater shield tunneling, representing a major innovation through cross-domain technology fusion [2] - The effective working time for pressure-maintained operations has increased from 40 minutes to 8 hours, enabling multiple teams to work in a 24-hour cycle, with the longest operational period reaching 28 days [3]

Core Viewpoint - The successful application of China's "Deep Sea Space Station" marks a significant advancement in domestic shield tunneling technology, particularly in high-pressure environments. Group 1 - The world's longest underwater high-speed rail tunnel has achieved a new milestone with the successful operation of the domestically developed shield tunneling equipment "Deep Sea Space Station" [1] - The equipment completed its first operation at a depth of 75 meters in a high-pressure environment, surpassing the previous safety operation depth limit of 60 meters [1] - During the operation, a total of 46 cutter changes were made, indicating the complexity and technical challenges overcome in this project [1]

Core Viewpoint - The construction of the Chongqi Railway and Highway Yangtze River Bridge and the Chongtai Yangtze River Tunnel will enable high-speed trains to cross the Yangtze River at speeds of 350 km/h without reduction, marking a significant advancement in China's high-speed rail infrastructure [1][2]. Group 1: Bridge Construction - The Chongqi Railway and Highway Yangtze River Bridge features a main span of 400 meters, ranking first in the world among similar bridges under construction [2]. - The bridge employs a dual-layer design, accommodating a six-lane highway on the upper level and high-speed rail on the lower level, creating a three-dimensional transportation system [2]. - The construction team has overcome significant challenges related to bridge deformation caused by wind and train forces, ensuring the stability of high-speed rail tracks [2][3]. Group 2: Tunnel Construction - The Chongtai Yangtze River Tunnel is the largest high-speed rail underwater tunnel in China, with a total length exceeding 14 kilometers and a single-shield tunneling distance of 11.3255 kilometers, the longest in the world [4][5]. - The tunnel construction involves advanced technology, including a shield machine equipped with an intelligent system for autonomous operation, ensuring precision and safety under high water pressure [5][6]. - Innovative materials and structural designs have been implemented to enhance the tunnel's stability and waterproofing, allowing for safe high-speed rail operation [5][6].

Group 1 - The world's largest diameter vertical shaft tunneling machine "Qiming" has officially commenced operation in Jiangsu Taicang, marking a new era for high-speed railway vertical shaft construction in China [1] - The Chongtai Yangtze River Tunnel is a key project under the national "Two Major" strategy, connecting Chongming Island and Taicang, with a total length of 14.25 kilometers and a design speed of 350 kilometers per hour [1] - The 2nd vertical shaft, located in Taicang, has a diameter of 24 meters and a depth of 56.08 meters, facing complex geological conditions and high construction risks [1] Group 2 - The "Linghang" shield machine, starting from Chongming, has already tunneled over 10,000 meters, with only about 850 meters remaining to the 2nd vertical shaft, which is crucial for its operation [2] - The completion of the Chongtai Yangtze River Tunnel will enable high-speed rail to cross the river without reducing speed, significantly shortening the travel time between Shanghai and Jiangsu [2] - The tunnel is expected to be operational by the second half of 2029, contributing to the integration of the Yangtze River Economic Belt and the high-quality development of the Yangtze River Delta [2]

Core Viewpoint - The "Wanmei Electric Power" shield tunneling machine has been launched in Guangzhou and will be utilized in the State Grid's Wuhu GIL (Gas Insulated Transmission Line) corridor project crossing the Yangtze River [1][3]. Group 1: Project Overview - The Wuhu GIL corridor project, located in Wuhu City, Anhui Province, is a crucial part of the Gansu-Zhejiang ±800 kV UHVDC transmission project, featuring a total tunnel length of 3,600 meters, making it the largest power corridor project under construction in terms of diameter in inland areas [3][5]. - The underground pipeline installation method, as opposed to an elevated ground solution, efficiently saves space, does not interfere with Yangtze River navigation, and ensures transmission stability unaffected by terrain and weather [3]. Group 2: Technical Specifications - The "Wanmei Electric Power" shield tunneling machine has a cutter head diameter of 12.13 meters, a total length of 150 meters, and a weight of 2,300 tons, with a total power of 6,900 kW and 116 cutter tools, including 72 replaceable tools for normal pressure [5]. - The machine is equipped with advanced technologies for tunneling through complex geological conditions, including interchangeable normal pressure rolling cutters, main drive telescoping, and synchronous double-liquid grouting [5]. - Intelligent control systems for tunneling posture, cutter wear detection, and advanced geological forecasting are integrated to ensure safe and efficient tunneling operations [5]. Group 3: Project Timeline and Impact - After factory manufacturing, the shield machine will be disassembled and transported to the construction site via water and land, with assembly and testing expected to begin, aiming for tunneling to commence by the end of March 2026 [7]. - This tunnel represents the most geologically complex and challenging power shield tunnel currently under construction on the Yangtze River, and its completion will effectively address cross-river transmission challenges, enhancing the power exchange capacity and reliability of the East China power grid [7].

Core Insights - The construction of the Jiangyin-Jingjiang Yangtze River Tunnel's road surface officially commenced on December 27, with a total length of approximately 6,445 meters and a shield section of 4,952 meters [1] - The project utilizes high-toughness cold-mixed resin concrete for the road surface, which meets green construction standards by ensuring zero smoke and harmful gas emissions during mixing and paving [1] Project Details - The total area for the road surface paving exceeds 160,000 square meters, with a designed thickness of 5 centimeters [1] - The project team has developed two sets of resin concrete mixing plants and an intelligent control platform for the binding material, ensuring stable quality through automated and visualized control of the mixing process [1] - Upgrades to the paver and roller equipment have been implemented to address challenges with low fluidity mixtures, enhancing the uniformity and efficiency of the paving process [1] Environmental and Technological Aspects - The construction integrates material science, intelligent technology, and green concepts, aiming to create a demonstration project characterized by high durability, low emissions, and smart technology [1] - The project is expected to provide valuable experience for future similar cross-river and cross-sea tunnel constructions [1]