当天，长江日报记者深入余家头站地下30余米处，看到一台长达140米、高度相当于四层楼、总重3000吨的巨型盾构机静卧井底，犹 如蓄势待发的钢铁巨龙。现场技术人员正在进行最后的调试，指挥人员通过对讲机下达指令，安全员检查防护设施。 1日，随着开挖直径达13.28米的"通途号"盾构机刀盘正式转动，由武汉地铁集团建设、中铁十四局施工的武汉地铁10号线一期工程正 式开启穿越长江之旅。 10号线一期"通途号"盾构机始发。 据武汉地铁集团一级项目经理徐锦斌介绍，10号线一期工程（汉口火车站至北洋桥段）全长约19公里，共设8座地下车站。盾构机从 余家头站出发，穿越长江到达二七路站，全长约3064米。该越江隧道采用单洞双线设计，是全线的重点控制性工程。 在盾构机驾驶舱，技术人员正在查看设备参数。 盾构机内部 施工方中铁十四局项目总工程师李义翔补充道，"通途号"盾构机配备镶有金刚石贴片的高硬度齿刀，具有良好的耐磨性能。同时，该 设备还安装了刀盘磨损检测、滚刀旋转监测、主驱动状态感知等智能化系统，能够实时监控施工状态，为科学调整掘进参数提供数据支 持，确保复杂地层中施工的安全性和精准度。 据悉，武汉地铁10号线一期工程是连接汉口 ...

（来源：经济日报） 转自：经济日报 1月1日，随着开挖直径13.28米的"通途号"盾构机刀盘缓缓转动，由武汉地铁集团有限公司建设、中铁十四局施工的武汉地铁10号线一期工程越江隧道盾 构顺利始发。 武汉地铁10号线一期工程线路全长19公里，共设8座地下车站。其中，余家头站至二七路站越江区间为全线重点控制性工程，全长约3064米，采用单洞双 线设计。盾构机从余家头站始发后，穿越长江抵达二七路站接收。区间段下穿长江水域段长约1700米，最大埋深约45.08米，沉降控制要求高。 1月1日，武汉地铁10号线一期越江隧道工程"通途号"盾构机顺利始发。袁永华摄 越江隧道区间地质条件复杂，盾构需要穿越粉质粘土、砂层、强弱风化岩层等软硬交错地层。武汉地铁集团一级项目经理徐锦斌介绍，盾构机在长约1170 米的硬质岩层中长距离连续穿越后，又要穿越约300米的土岩复合地层，如同在"钻石层"与"年糕团"中交错穿越，不仅会迅速磨损刀具，管道，还易导致 刀盘结泥饼、开挖仓积渣。此外，盾构机还要在长江底挑战60米长的岩石破碎带，直面刀具损坏、刀盘卡阻等风险。 工欲善其事，必先利其器。为应对复杂工况，建设团队依托多次穿越长江的丰富经验，量身打 ...

Core Points - The Jinan Metro Line 4 has commenced trial operation, which will enhance the overall metro network in Jinan [1] - The line, constructed by Jinan Metro Group and China Railway 14th Bureau, spans 40.3 kilometers and runs through densely populated areas along Jinan's main thoroughfare, alleviating traffic pressure [2] - The construction faced challenges due to spring water protection and complex karst geological conditions, with approximately 300 caves in a 1-kilometer section [2] - The construction team prioritized environmental protection by developing new eco-friendly materials and creating a diversion channel system to minimize impact on the underground environment [2] - Jinan Metro Line 8 also began trial operation on the same day, which will connect with Line 4, contributing to the alleviation of east-west traffic congestion and promoting economic development in the region [2]

Core Viewpoint - The official launch of the trial operation for the Jinan Metro Line 6 East Section marks a critical phase in the preparation for full operation, aiming for a high-standard opening by the end of the year [1][5]. Group 1: Trial Operation and Preparation - The trial operation commenced on August 26, transitioning the metro from construction to operational readiness, with a focus on training, emergency drills, and system testing [1]. - The trial period will last for three months, during which the operational team will validate the safety, usability, and reliability of key systems including vehicles, tracks, signals, and power supply [1]. Group 2: Project Details and Achievements - The East Section of Line 6 spans 19.5 kilometers, featuring 17 stations and one vehicle base, connecting significant areas such as Shandong University and the Central Business District [1]. - The project successfully passed engineering acceptance on August 22, utilizing advanced technologies like a dual-mode shield machine and an intelligent shield system for complex geological conditions [2]. Group 3: Future Steps - Following the trial operation, the East Section will proceed with operational drills, system acceptance, and safety evaluations to ensure a smooth and efficient launch by year-end [5].

Group 1 - The successful electrification of the Jinan Metro Line 4 marks a significant milestone, indicating that the entire power supply system is operational, which accelerates subsequent testing and debugging processes [1][5] - The project team has developed a four-phase dynamic testing plan to address the uneven construction progress across the 33 stations, ensuring efficient project advancement [3] - The "electricity connection" covers a total of 40.3 kilometers of underground lines and 33 stations, with each substation equipped with advanced smart systems for unmanned operation and energy management [5][6] Group 2 - The completion of the electrification allows for the testing of trains on powered tracks, including cold and hot sliding tests, and comprehensive debugging of station equipment [6] - Line 4 will serve as a crucial transportation artery connecting key areas in Jinan, alleviating congestion and enhancing the overall traffic network, while also stimulating commercial upgrades along the route [6]

Group 1: Jinan Rail Transit Line 4 - The construction of Line 4 has achieved "long rail connection" between the sections from Weilizhuang to Quancheng Park Station, marking a significant milestone in the project [1][5] - The project team has adopted an innovative "machine laying + manual laying" construction mode, which effectively addresses challenges such as limited space and multiple cross operations, achieving a record of 670 meters of track laid in a single day [4] - Key sections of Line 4 utilize steel spring floating slab track bed technology to reduce noise by 10 to 15 decibels, enhancing passenger comfort and ensuring smooth train operations [5][7] Group 2: Jinan Rail Transit Line 8 - The hot sliding test for Line 8 has officially started, which is a critical step before the full line dynamic debugging begins [8][10] - The dynamic debugging is expected to last for about 2-3 months, during which the performance and compatibility of various systems will be comprehensively tested and optimized [12] - All main structures of Line 8 have been capped, and decoration and auxiliary structure construction are progressing rapidly, with a goal to complete the line by the end of the year [12] Group 3: High New District Cloud Bus - The construction of the High New District Cloud Bus project is in the final sprint phase, with all 32 stations capped and decoration work underway [15] - Train debugging has already commenced between the Rainbow Lake Park Station and Tangye East Road Station, aiming for successful operation by the end of the year [15] Group 4: Noise Reduction Measures - In light of the upcoming high school entrance examinations, all ongoing projects are implementing a "silent action" to ensure a quiet environment for students, demonstrating the commitment to community welfare while accelerating construction [17]

Core Points - The "Electric Pioneer" TBM (Tunnel Boring Machine) has commenced operation, marking the start of the shield tunneling phase for the Chongqing Rail Transit Line 7 Phase I project, which spans approximately 28 kilometers and includes 18 stations [1][2] - The project aims to enhance the north-south transportation capacity in Chongqing, connecting various urban clusters and facilitating transfers with existing and under-construction rail lines [2] Group 1: Project Overview - The Chongqing Rail Transit Line 7 Phase I will connect key areas such as Xiyong, Hangu, and Jinfeng, with a total length of about 28 kilometers and 18 stations [1] - The tunneling section includes a 3.3-meter shallow cover segment and a challenging 1,332-meter segment with a 38‰ gradient, requiring significant engineering solutions [1] Group 2: Technical Specifications - The "Electric Pioneer" TBM has a working length of 85 meters, a diameter of 6.84 meters, and weighs approximately 500 tons, with a main drive power of 945 kW and a maximum thrust of 4,344 tons [2] - The TBM is designed to achieve an average daily advance rate of 9 to 12 meters while performing excavation, support, and ventilation tasks [2] Group 3: Engineering Innovations - The construction team has implemented 3D simulation technology for advanced planning and developed an intelligent control system for real-time data analysis to ensure efficient tunneling [1] - A special wear-resistant layer with a shear strength exceeding 350 MPa has been added to the TBM's cutting tools to enhance durability against hard rock formations [1]