"十五五"规划建议提出，"完善民营企业参与重大项目建设长效机制，激发民间投资活力、提高民间投 资比重""发展壮大民营经济"。 正在建设的甬舟铁路金塘海底隧道，是连接宁波和舟山之间的铁路隧道，它也是世界最长、直径最大的 海底高铁隧道，建成后将彻底结束浙江舟山不通铁路的历史。 这项挑战世界级难度的超级工程，参与舟山侧隧道建设的企业近300家，其中九成以上是民营企业，不 乏国家级专精特新"小巨人"企业，在核心部件研发、特种装备定制、精密质量管控等方面扛起了关键重 任。 在舟山侧的施工现场，一台重达4350吨、开挖直径14.57米的"定海号"盾构机，正在快速推进海底隧道 的掘进工作。它每天以超10米的速度稳步前进，舟山侧的6270米掘进任务已经完成了5.6公里，距离海 底对接点越来越近。 工程进度快，离不开"大国重器"的强力支撑。深海掘进的主力军——盾构机就是大国重器，而决定盾构 机能否穿透复杂地层的核心，就是前端的盾构刀具。这副"工业牙齿"，全部由民营企业自主研发和制 造。 正是依靠民营科技企业的技术突破，才使得金塘海底隧道实现了国内无前例的超长距离、无换刀掘进。 本次施工面临前所未有的挑战，隧道前期5000多米均 ...

Core Viewpoint - The successful completion of the Tianshan Victory Tunnel, a key project of the Belt and Road Initiative, marks a significant achievement in overcoming extreme geological challenges through innovative tunneling technology [2][3][5]. Group 1: Project Overview - The Tianshan Victory Tunnel is part of the Urumqi-Kuerle Expressway, which reduces travel time from approximately 7 hours to about 3 hours [2]. - The tunnel construction faced severe challenges, including high ground stress, cold temperatures, high seismic intensity, high altitude, and multiple fault zones, making it a "Mount Everest" of tunnel engineering [3]. Group 2: Innovative Technology - China Communications Construction Company (CCCC) developed the world's first innovative pressurized construction method hard rock tunneling machines, "Tianshan" and "Victory," with a diameter of 8.43 meters and a weight exceeding 2000 tons [5]. - These machines can intelligently switch tunneling modes based on geological conditions, achieving efficient excavation in intact rock and rapid conversion to pressurized concrete support in weaker sections [5]. - The "Victory" machine set records with a maximum daily excavation of 35 meters and a monthly record of 528 meters in high-altitude conditions [5]. Group 3: Vertical Tunneling Challenges - The construction of a 707-meter deep ventilation shaft at an altitude of 3660 meters posed another significant challenge, where traditional methods were inefficient and risky [6][7]. - The "Chuangxin" machine, designed for high-altitude and high-stress conditions, achieved a maximum vertical excavation of 104 meters per month and is expected to set world records in depth, diameter, and altitude by mid-2025 [7]. Group 4: Future Prospects - The completion of the Tianshan Victory Tunnel is seen as a new starting point for China's tunneling equipment to tackle more complex projects, including the Xitian Mountain Zhaowen Tunnel and Moxun Mountain Tunnel [9]. - The "Zhaosu" and "Wensu" TBMs, developed based on previous models, have undergone over 100 technical upgrades, improving excavation speed by over 60% [9]. - The "Wensu" machine achieved a maximum daily excavation of 60.6 meters and a monthly record of 862.4 meters, demonstrating superior geological adaptability [9]. Group 5: Technological Advancements - The advancements in tunneling technology reflect China's strong capabilities in high-end engineering equipment manufacturing, emphasizing digitalization, intelligence, and sustainability [11]. - CCCC aims to enhance industrial competitiveness and contribute to national development strategies through continuous innovation and optimization of its technological offerings [11].

Core Insights - The article highlights the evolution of China's manufacturing capabilities over the past 60 years, particularly in the context of large-scale engineering projects like the Beijing subway system [2][4]. Group 1: Historical Context - The first phase of the Beijing subway construction began in 1965, utilizing open-cut construction methods, reflecting the nascent state of China's manufacturing industry at that time [2][3]. - At that time, China's manufacturing sector lacked significant capabilities in large engineering equipment, indicating a period of limited technological advancement [3]. Group 2: Current Developments - A large shield tunneling machine is currently undergoing pre-delivery testing in a workshop near the Yellow River, signifying advancements in manufacturing technology [4]. - This machine is set to be deployed for the construction of a branch line of the Beijing subway, showcasing the progress made in the manufacturing sector over the past half-century [4].

Core Insights - The article highlights a significant breakthrough in China's underground engineering equipment with the launch of the "Mozi" dual-shield hard rock tunneling machine (TBM), which features the world's smallest turning radius technology, setting a new technical limit for similar 6-meter class underground excavation equipment [1][2] Group 1: Technological Advancements - The "Mozi" TBM is designed for the complex underground excavation of the Shandong Zaozhuang Shanting pumped storage power station, which presents challenges such as hard limestone, soft shale, and hidden geological features like caves and faults [1] - The TBM's upgraded cutting tools have expanded the excavation range by 80 millimeters, significantly improving hard rock excavation efficiency [2] - The machine incorporates a "reverse cone" design and a lightweight system, enhancing maneuverability in confined spaces and preventing collisions [2] Group 2: Navigation and Operational Efficiency - The "Mozi" TBM is equipped with a high-precision navigation system that combines total stations and laser targets, allowing real-time monitoring of the machine's posture and excavation position, thus enabling precise path planning [2] - The TBM can achieve a minimum turning radius of 50 meters, breaking the traditional requirement of a 100-meter turning radius for TBMs, which facilitates more flexible and efficient deep earth development [2] Group 3: Industry Implications - The advancement of small turning radius excavation technology is expected to support the secondary development and deep utilization of underground space, allowing tunnels to navigate densely built areas, thereby reducing demolition costs [3] - This technology is anticipated to become a key support for deep earth development and application, particularly with the ongoing upgrades in intelligent and modular technologies [3]

Core Viewpoint - The third China International Supply Chain Promotion Expo showcased the strength of China Railway 11th Bureau in intelligent construction equipment, emphasizing the importance of enhancing resilience in the supply chain and industry chain [1][4]. Group 1: Event Overview - The expo featured 651 companies and organizations from 75 countries and regions, with over 65% being Fortune 500 and industry-leading enterprises, marking a 15% increase in scale compared to the previous year [4]. - The theme of the expo was "Linking the World, Creating the Future," with six major exhibition areas, including a newly introduced innovation chain zone focusing on low-carbon transformation and intelligent upgrades [4]. Group 2: Company Highlights - China Railway 11th Bureau presented several innovative products, including the world's first 1,000-ton high-speed rail box girder transport and erection machine "Kunlun," which features groundbreaking capabilities such as all-weather adaptive beam erection and environmental sensing [4]. - The company has established a national digital construction technology innovation center and has made significant advancements in intelligent construction technology, achieving breakthroughs in stability control for ultra-large equipment and intelligent construction management [7][8]. Group 3: Technological Innovations - The company has developed over 130 new types of equipment with independent intellectual property rights, including intelligent double-line long rail laying machines and the "Dinghai" domestic ultra-large diameter shield machine, filling domestic technological gaps [8]. - The intelligent prefabrication plants, smart beam yards, and digital platforms have been successfully applied in major national railway projects, receiving high praise for their modular design and digital management capabilities [8]. Group 4: Future Directions - The expo provided a valuable opportunity for China Railway 11th Bureau to expand upstream and downstream cooperation and deepen international capacity collaboration [8]. - The company plans to continue leveraging technological innovation to accelerate breakthroughs in key core technologies and enhance collaboration with upstream and downstream enterprises in the global supply chain [8].

Core Viewpoint - The article emphasizes the commitment of China Communications Construction Company (CCCC) Tianhe to innovation-driven, intelligent, and green development in engineering equipment, aligning with the new development philosophy established by the Chinese government [1][8]. Group 1: Innovation and Technology Development - CCCC Tianhe is advancing the efficiency and energy consumption of tunnel equipment through technological innovation, including the development of key technologies such as intelligent diagnosis and control for slurry balance shield machines and large-diameter shield machines [2]. - The company has developed a high-performance variable frequency drive that breaks foreign monopolies, significantly reducing energy consumption through low-speed, high-power, and high-precision control [2]. - The implementation of AI algorithms in the control system allows real-time adjustments to excavation parameters, leading to a substantial reduction in idle losses [2]. Group 2: Environmental Sustainability - The automated slurry treatment system developed by CCCC Tianhe achieves an 85% recycling rate of excavation waste, while the closed transportation and water circulation systems ensure over 90% reuse of construction water [3]. - The company’s remanufacturing initiatives are recognized as a key demonstration project by the Ministry of Industry and Information Technology, promoting a circular economy and significantly reducing energy consumption and air pollutants [4][5]. - The remanufacturing process can lower energy consumption by over 60% and reduce atmospheric pollutants by over 80%, while generating minimal solid waste [5]. Group 3: Renewable Energy and Carbon Reduction - CCCC Tianhe is actively involved in the renewable energy sector, utilizing 30,000 square meters of solar photovoltaic panels to save nearly 3 million kilowatt-hours of electricity annually, providing over 50% of its manufacturing power from clean energy [6]. - The company has developed the world's first new type of offshore wind power rock drilling machine, which addresses low efficiency issues in large-diameter rock drilling and supports the installation of over 4,200 megawatts of wind power capacity [7]. - The offshore wind power equipment contributes to an annual clean electricity generation of 12.5 billion kilowatt-hours, equivalent to saving approximately 3.3 million tons of standard coal and reducing carbon dioxide emissions by about 9 million tons [7]. Group 4: Comprehensive Development Strategy - CCCC Tianhe is committed to integrating the new development philosophy across all aspects of its operations, focusing on green technology innovation and establishing a carbon emission management mechanism [8]. - The company aims to enhance the entire lifecycle carbon emission accounting system and promote green low-carbon collaboration across the entire industry chain [8].