齐鲁晚报·齐鲁壹点记者 王瑞超 实习生 李文慧 国庆假期期间，中铁十四局济南黄岗路黄河隧道项目的500余名建设者坚守岗位，在忙碌中度过节日，全力保障工程 进度。 在南岸盾构机维保现场，盾构机长代文强和其他一线作业人员正在紧张的对刚刚完成拆解的"山河号"盾构机进行维 保，他们通过洒水车、磨光机对盾构机部件进行清泥、除锈、打磨，做好盾构机的下线维保工作。 黄河之畔，忙碌的身影成为节日里独特的景象，也记录着济南加速迈向"黄河时代"的坚实步伐。 节前，项目部围绕"筑牢安全防线，护航节日平安"展开专项部署，以六项扎实举措织密安全防护网。针对隧道同步施 工、盾构机拆解等关键风险环节，建立"一人一策"专项台账，实施精准管控。假日期间，严格执行领导带班制度，各 部门负责人全员下沉一线，全程盯控，以严密监管守住安全底线。 "越是节假日，越要守住施工黄金期。"项目负责人周祥表示，当前项目正处于隧道内同步施工与盾构机维保工作的关 键阶段。国庆期间，必须完成北岸工作井上层混凝土车道板浇筑、内部烟道板预制等关键工序，同时稳步推进盾构机 的维保。时间紧任务重，但每一道工序均按照严格标准执行，不因节日而有丝毫松懈。 "能参与世界级工程建设 ...

Core Viewpoint - The "14th Five-Year Plan" has led to numerous groundbreaking projects in China, showcasing significant advancements in infrastructure and technology, which are pivotal for economic and social development [1][2][3]. Infrastructure Development - Major infrastructure projects include the completion of the world's largest underwater shield tunnel, the Huanggang Road Yellow River Tunnel, and the establishment of key transportation links such as the Guiyang-Nanning high-speed railway and the Chengdu Tianfu Airport [10][12]. - The construction of 102 major projects is on track to meet its goals by the end of the year, enhancing domestic and international circulation [11][14]. Technological Innovations - China has achieved significant breakthroughs in various technological fields, including the successful operation of the "Deep Sea No. 1" gas field, which is the deepest and most challenging offshore gas field to date [6][7]. - The country has made advancements in quantum computing and nuclear fusion, with the "Zuchongzhi 3" quantum computing prototype leading globally and the "Oriental Super Ring" achieving record plasma operation [8][15]. Energy and Environmental Initiatives - The development of clean energy corridors, including the world's largest hydropower stations, is contributing to a sustainable energy future, with renewable energy generation expected to reach 3.46 trillion kilowatt-hours by 2024 [8][12]. - Significant efforts are being made in ecological construction, such as the "Three North" project and various afforestation initiatives to combat desertification [15]. Social Welfare Projects - The government is supporting the establishment of 125 national regional medical centers and the renovation of 208,000 homes for elderly families, enhancing the quality of life for citizens [13][15]. - The completion of major projects is expected to bolster national security and improve the overall living standards of the population [13].

Core Viewpoint - The successful completion of the world's largest underwater shield tunnel, the "Shanhe" shield machine, marks a significant achievement in engineering and construction, showcasing advanced technology and innovative methods in tunnel construction [2][4]. Group 1: Project Overview - The Jinan Huanggang Road Yellow River Tunnel, with a total length of approximately 5.75 kilometers and a shield section of about 3.3 kilometers, is the first single-tube double-layer shield tunnel crossing the Yellow River in China [2]. - The tunnel features a dual-direction six-lane design with a maximum speed of 60 km/h, significantly reducing the average distance between river crossings to 3 kilometers [2]. Group 2: Engineering Challenges - The construction faced significant challenges, including the need to traverse a "suspended river" where the riverbed is 5 meters above the ground level, with the tunnel's lowest point located 54 meters below the riverbed [3]. - The project encountered unpredictable geological conditions, with a large area of "calcium nodules" embedded in the clay layer, complicating the excavation process [7][8]. Group 3: Technological Innovations - The "Shanhe" shield machine, with a diameter of 17.5 meters, was specifically designed to enhance excavation efficiency, achieving a digging speed of 35 mm per minute, surpassing previous records [4][6]. - The machine is equipped with advanced features such as a telescopic main drive and a fourth-generation dual-liquid synchronous grouting technology, enabling real-time monitoring and intelligent decision-making [5][10]. Group 4: Mud Treatment and Environmental Considerations - The project implemented a self-built mud treatment facility capable of processing nearly 600 cubic meters of mud per hour, improving efficiency by 50% and ensuring zero pollution to the surrounding water sources [9][10]. - The innovative "flocculation + concentration + pressure filtration" process was developed to handle the unique challenges posed by the Yellow River's mud layers [10]. Group 5: Construction Coordination - The tunnel's design required simultaneous construction of internal structures within a confined space, leading to the development of a custom combination vehicle to facilitate efficient material transport and construction coordination [11]. - The project team optimized over ten construction processes, resulting in a 60% improvement in internal structure construction efficiency, ensuring the overall progress of the project [11].

Core Viewpoint - The Jinan Huanggang Road Yellow River Tunnel has successfully completed its construction and is expected to be operational by the second half of next year, significantly reducing travel time across the Yellow River from approximately 30 minutes to just 5 minutes, thereby enhancing connectivity and cooperation in the region [1][5]. Group 1: Tunnel Specifications - The tunnel spans approximately 5.75 kilometers, with a shield section measuring about 3.3 kilometers, designed for a speed of 60 kilometers per hour, featuring a single tunnel with dual-layer, bi-directional six-lane design, making it the world's largest diameter underwater shield tunnel [3]. - The construction utilized the "Shanhe" shield machine with a diameter of 17.5 meters, which faced significant challenges due to the sensitive geological conditions under the Yellow River, including high soil pressure and strict settlement control requirements [3][10]. Group 2: Construction Innovations - The Jinan Huanggang Road Yellow River Tunnel is the first single-tube double-layer shield tunnel to cross the Yellow River, optimizing underground space and investment while meeting the height requirements for public transport and emergency vehicles [5]. - Advanced technologies were employed, including a larger pressure cutter head and an intelligent equipment system, which enabled effective mud treatment and zero discharge of tailwater, ensuring safe and efficient tunneling through the Yellow River [12].

Core Viewpoint - The successful breakthrough of the "Shanhe" shield machine at the Huanghe Tunnel in Jinan marks a significant milestone as it is the world's largest underwater shield tunnel with a diameter of 17.5 meters [1] Group 1: Project Details - The Huanghe Tunnel project is invested and constructed by Jinan Urban Construction Group, with China Railway 14th Bureau Group as the contractor [1] - The completion of this tunnel is considered a milestone in engineering, as stated by Qian Qihu, a recipient of the National Supreme Science and Technology Award and an academician of the Chinese Academy of Engineering [1]

Core Viewpoint - The successful completion of the Jinan Huanggang Road Yellow River Tunnel marks a significant milestone in underwater tunnel construction in China, utilizing the world's largest diameter underwater shield tunneling machine, "Shanhe" [1][5][16]. Group 1: Project Overview - The Jinan Huanggang Road Yellow River Tunnel is approximately 5.75 kilometers long, with the shield section measuring about 3.3 kilometers, designed for a speed of 60 kilometers per hour, and features a single-hole double-layer tunnel layout, making it the first of its kind in China to cross the Yellow River [5][16]. - The shield machine, "Shanhe," has a diameter of 17.5 meters and is designed to navigate complex geological conditions, including a maximum soil cover of 49.2 meters and a maximum water-soil pressure of 6.3 bar [5][8]. Group 2: Technical Innovations - The project team developed a unique "flocculation + concentration + pressure filtration" system, improving mud treatment efficiency by 50% and reducing the moisture content of the filter cake to below 30% [15]. - Advanced technologies such as diamond tools, rock crushers, and dual-pipeline hydraulic rock drilling devices were employed to address challenges posed by calcareous nodules, achieving continuous tunneling for 3.3 kilometers without changing tools [15][16]. Group 3: Construction Achievements - The project has overcome 28 technical challenges, achieving a maximum daily advance rate of 18 meters and a monthly advance rate of 426 meters, setting a world record for 17-meter diameter shield construction [16]. - The construction process has resulted in over 30 scientific papers and 22 patent applications, establishing a complete technical system for 17-meter shield construction, enhancing China's capabilities in large-diameter shield tunneling [16]. Group 4: Economic and Strategic Impact - The completion of the tunnel will enhance economic exchanges and cooperation between the north and south banks of the Yellow River, significantly contributing to the development of Jinan and supporting national strategies related to the Yellow River [16].

Core Points - The Jinan Huanggang Road Yellow River Tunnel has been completed, allowing vehicles to cross the Yellow River in just 5 minutes [1] - The tunnel is approximately 5.75 kilometers long, with a shield section of about 3.3 kilometers, designed for a speed of 60 km/h and features a single-hole double-layer, bi-directional six-lane design, making it the world's largest diameter underwater shield tunnel [3] - The tunnel utilizes the "Shanhe" shield machine with a diameter of 17.5 meters, successfully tunneling beneath sensitive areas such as the Yellow River embankment [3] Economic Impact - The Jinan Huanggang Road Yellow River Tunnel is the first single-hole double-layer shield tunnel crossing the Yellow River, which saves underground space and investment [3] - With a net height of 4.2 meters, the tunnel meets the requirements for public transport, fire, management, and rescue vehicles, significantly enhancing traffic capacity [3] - The tunnel is expected to be operational by the second half of next year, reducing travel time across the river from approximately 30 minutes to about 5 minutes, thereby promoting economic exchange and cooperation between the north and south banks of the Yellow River [3]

Core Insights - The event "Port Connects the World · Intelligent Creation for the Future" was held to enhance collaboration among government, finance, enterprises, and research, aiming to accelerate innovation and cultivate new productive forces in Jinan Lingang Economic Development Zone [1][2] Group 1: Event Overview - The event featured over 20 benchmark industrial parks and more than 60 key enterprises, along with five major research and innovation platforms and over 20 financial institutions [2] - The Jinan Municipal Organization Department provided insights into new talent policies to strengthen intellectual support, while financial institutions presented customized inclusive financial solutions to address financing bottlenecks [2] Group 2: Industrial Development Platforms - Jinan Lingang Economic Development Zone has established five high-energy industrial platforms, including the Jinan Supercomputing Technology Park with over 8 billion yuan investment, which has attracted 48 leading tech companies [3] - The National China-Europe Railway Express (Jinan) Central Hub is being developed as a national-level open platform to enhance inland openness [3] - The Qilu Optics Valley is under construction, focusing on laser manufacturing and design, with a total investment of 4.3 billion yuan [3] Group 3: Future Industry Collaboration - The development quality of Jinan Lingang Economic Development Zone has improved, with 69 industrial enterprises and 217 high-tech enterprises currently established [4] - The zone has identified a collaborative development framework of "3+2+1," focusing on three leading industries: modern medicine, high-end CNC machine tools and robotics, and integrated circuits, along with two future industries: artificial intelligence and aerospace information [4] - The event aimed to create a three-in-one platform for policy empowerment, demand matching, and financial support to enhance the integration of innovation, industry, and finance [4]

Core Viewpoint - The construction of the Jinan Huanggang Road Underwater Tunnel, a key project for ecological protection and high-quality development in the Yellow River Basin, has reached a significant milestone with over 3000 meters of tunneling completed, marking the project’s acceleration phase [1][3]. Group 1: Project Overview - The Jinan Huanggang Road Underwater Tunnel is approximately 5755 meters long, with a shield section of about 3290 meters, designed for dual-layer, dual-direction six-lane traffic at a speed of 60 km/h, utilizing a shield machine with a diameter of 17.5 meters [3]. - The project is being constructed by the Jinan Urban Construction Group and undertaken by the China Railway 14th Bureau Group [1]. Group 2: Technical Innovations - The project team has implemented targeted design optimizations for the shield machine to address challenges posed by the geological conditions, including the use of diamond-coated tools and hydraulic rock-breaking devices [3][5]. - An intelligent system, developed in collaboration with Shandong University, enhances the shield machine's ability to adapt to complex construction environments through advanced geological forecasting and interface recognition [5]. Group 3: Construction Efficiency - The single-tube double-layer design of the tunnel saves underground space and reduces investment costs by approximately 15% compared to conventional double tunnels [7]. - The project team has innovatively designed a mobile hydraulic platform for the upper roadway slab construction, allowing for simultaneous internal structure work and shield tunneling, thus ensuring efficient project progress [7]. Group 4: Safety and Health Measures - In response to high summer temperatures, the project has adjusted work schedules, provided heat prevention materials, and established a health monitoring system for workers to ensure safety and efficiency [9]. - The completed tunnel is expected to enhance connectivity between Jinan's main urban area and the new kinetic energy conversion zone, facilitating accelerated development in the region [9].

Core Viewpoint - The world's largest diameter underwater shield tunnel has successfully completed the excavation of the Yellow River section, marking a significant milestone in the construction of this engineering project [1] Group 1: Project Details - The Jinan Huanggang Road Yellow River Tunnel completed the excavation task on June 22, with the assembly of the 1376th ring segment [1] - The project team adapted to the unique geological conditions of the Yellow River basin by increasing the opening rate of the shield machine's cutter head and installing a high-flow central flushing system to prevent mud cake formation [1] - The innovative "flocculation + concentration + pressure filtration" process was employed, allowing for the treatment of nearly 600 cubic meters of waste slurry per hour, improving waste slurry processing efficiency by 50% and reducing the moisture content of the filter cake to below 30% [1] Group 2: Progress and Achievements - The "Shanhe" shield machine has successfully completed the excavation of 1376 rings, totaling 2752 meters, with a construction progress of 83% [1]