【环球时报报道 记者 线一凡 周扬】"伊朗与土耳其宣布斥资16亿美元修建亚欧连通铁路。"《今日土耳 其》网站11月30日以此为题报道称，伊朗外交部长阿拉格齐当天宣布，伊朗和土耳其已达成协议，将修 建一条新的铁路，以打造连接亚洲和欧洲的战略运输走廊。这条规划中的线路被称为马兰德-切什梅赫 萨拉亚铁路线，从伊朗西北部开始建设，与土耳其阿拉勒克地区的铁路相连，全长约200公里。伊朗政 府估计该项目耗资约16亿美元，工期为3至4年。 据报道，阿拉格齐11月29日与到访伊朗的土耳其外长费丹举行联合新闻发布会，表示两国均强调消除贸 易和投资壁垒的重要性。两位外长均对铁路工程近期开工抱有乐观态度，并着重强调了该铁路对地区发 展的重要意义。 伊朗道路与城市发展部长萨迪克日前表示，将全力推进该段铁路建设，这一项目完工意味着古代丝绸之 路南线将成为全铁路走廊，"保障中欧铁路网络的连贯畅通"。萨迪克还说，这一基础设施能实现"各类 货物运输的高效低价，且中途停靠站点极少"。 土耳其媒体称，该铁路线将为亚洲和欧洲之间的货物运输提供一条替代陆路路线，减少对距离更长的海 上航线或其他跨国陆路走廊的依赖。伊朗经济学家马达尼对伊朗学生通讯社说 ...

Core Viewpoint - The construction of the longest bridge on the Huangbai Railway, the Lianzhuan No. 1 Bridge, has entered the continuous beam construction phase, marking a significant advancement in the project [1][4]. Group 1: Project Progress - The Lianzhuan No. 1 Bridge spans 4,766.83 meters, making it the longest bridge on the Huangbai Railway, which is approximately 315 kilometers long with a designed speed of 160 km/h [3][4]. - As of now, 13 out of 21 continuous beams designed for the bridge have entered the construction phase, accounting for over 60% of the total [4]. - The construction of 33 new tunnels along the Huangbai Railway has seen 7 tunnels safely completed, with the overall progress of tunnel, bridge, and roadbed works at 45.6%, 50.7%, and 43.6% respectively [4]. Group 2: Construction Techniques - The construction employs a continuous beam design to avoid setting bridge piers in river areas, thus protecting water resources [3][4]. - The use of a support cast-in-place method for the continuous beams eliminates the need for large lifting equipment, addressing challenges related to material transport and saving approximately 2 months in construction time compared to traditional methods [3][4]. Group 3: Economic and Regional Impact - The Huangbai Railway is a key project for the Western Land-Sea New Corridor, expected to enhance regional transportation networks and promote coordinated economic and social development in the area upon its completion in 2028 [4].

Core Viewpoint - The completion of the first box girder pouring for the Hezhang High-speed Railway in Guangxi marks the official start of box girder production, which is crucial for the project's progress and quality assurance [1][2]. Group 1: Project Overview - The Hezhang High-speed Railway in Guangxi spans approximately 139 kilometers with a designed speed of 350 km/h, serving as a significant part of China's "Eight Vertical and Eight Horizontal" high-speed rail network [5]. - The project is positioned as an important inter-regional passenger dedicated line and a new high-speed corridor connecting the Beibu Gulf, Pearl River Delta, and Yangtze River Delta [5]. Group 2: Construction Progress - The first box girder poured measures 32.6 meters in length and weighs 693 tons, utilizing advanced construction techniques such as intelligent tensioning and vacuum-assisted grouting [2]. - As of now, 2,975 bridge piles have been completed, and 79 bridge piers have been constructed, indicating steady progress in bridge engineering [5]. Group 3: Future Plans and Impact - The project aims to expedite land use approvals and land acquisition to facilitate the full commencement of the roadbed and other bridge constructions [3]. - The Hezhang High-speed Railway is expected to be completed and operational by the end of 2028, significantly enhancing railway transport capacity in Guangdong and Guangxi, optimizing regional railway network layout, and promoting high-quality economic development along the route [5].

从中铁十四局沪宁合高铁安徽段项目部获悉，其承建的连接上海、南京、合肥的沪宁合高铁安徽段最长 隧道丰山隧道已顺利穿越3条断裂带，累计掘进突破5000米，进入最后冲刺阶段。新建上海至南京至合 肥安徽段高速铁路是国家"八纵八横"高速铁路网沿江高铁通道的重要组成部分，设计时速350公里。项 目建成后，将在上海大都市圈、南京都市圈和合肥都市圈间建起一条快速新通道，对于优化沿长江地区 铁路网布局、服务长江经济带协同发展，推动长三角一体化高质量发展等具有重要意义。 （文章来源：新华社） ...

江苏宿迁：施工中的潍宿高铁跨京杭大运河特大桥 江苏宿迁：施工中的潍宿高铁跨京杭大运河特大桥【2】 江苏宿迁：施工中的潍宿高铁跨京杭大运河特大桥【5】 江苏宿迁：施工中的潍宿高铁跨京杭大运河特大桥【3】 江苏宿迁：施工中的潍宿高铁跨京杭大运河特大桥【4】 ...

Core Insights - The construction of the world's longest underwater high-speed rail tunnel has achieved a significant milestone with the "Dinghai" shield machine surpassing 5,000 meters of excavation, marking approximately 80% completion of the Zhoushan side of the tunnel, which is 6,270 meters long [1][3] Group 1: Project Overview - The Jintang Underwater Tunnel is a key project of the Ningbo-Zhoushan Railway, spanning 16.18 kilometers, with the shield section measuring 11.21 kilometers [3] - Two large-diameter shield machines, "Dinghai" and "Yongzhou," are being used for excavation from both sides, facing complex geological conditions including high water pressure and various soil types [3] Group 2: Construction Challenges - The geological conditions are extremely complex, requiring the shield section to navigate through hard rock, clay, and sandy layers, presenting multiple challenges such as high intensity, high water pressure, and high precision [3] - The construction team has implemented measures such as enhanced tail seal management, optimized excavation parameters, and real-time monitoring to control ground disturbance and ensure safety [3] Group 3: Future Plans - The "Dinghai" shield machine is set to continue its progress towards the seabed connection point, with the "Yongzhou" shield machine also advancing steadily [5] - The project is expected to achieve a successful underwater connection by October 2026, with the Ningbo-Zhoushan Railway projected to be operational by 2028, integrating Zhoushan into the national railway network [5]

Core Viewpoint - The successful completion of the rail laying for the Xiong'an to Shangqiu section of the Beijing-Hong Kong High-Speed Railway in Shandong marks a significant milestone, transitioning the construction focus from Shandong to Henan, and setting the stage for the entire line's completion by the end of the year [1][3]. Group 1: Project Progress - The rail laying operation has passed through eight stations including Liaocheng, Heze East, and Yuncheng, with a total of 532 kilometers of track laid, accounting for 93% of the total rail laying work [3][4]. - The Yuncheng rail laying base has been operational for 88 consecutive days, employing a "direct laying + side laying" simultaneous advancement model [3]. Group 2: Project Management and Safety - The construction team has implemented a scientific scheduling approach, integrating self-built labor teams and innovating a mechanism of "own workers + cooperative teams + temporary workers" to optimize the construction process [3]. - A special task force has been established to address technical challenges, ensuring precision and quality in rail laying while maintaining a zero-accident safety record throughout the project [3][4]. Group 3: Technological Advancements - The project utilizes intelligent equipment, including smart cranes capable of automatic rail handling, and a real-time monitoring system to enhance operational efficiency and standardization [4]. Group 4: Economic and Social Impact - Upon completion, the Xiong-Shang section will enhance the rail transport network in the Beijing-Tianjin-Hebei, Central Plains, and South China regions, facilitating regional economic development and resource sharing [4].

江西首条大直径高铁盾构隧道贯通 中新社北京11月28日电 (记者 刘文文)记者从中铁十四局获悉，江西省首条大直径高铁盾构隧道昌九高 铁天祥大道隧道28日顺利贯通，为昌九高铁全线铺轨施工打下坚实基础。 天祥大道隧道是昌九高铁关键控制性工程，北起南昌市高新区昌东镇阳门村，南至高新区昌东镇山湖 村，全长6.379公里，为单洞双线隧道，盾构段长4.4公里，盾构直径14.8米。这是是目前国内施工环境 和穿越地质条件最为复杂的高铁盾构隧道之一。 广告等商务合作，请点击这里 据中铁十四局昌九高铁盾构项目总工程师张敬祥介绍，在盾构施工时，盾构机需要穿越"上土下岩"风化 不均的2000余米复合地层，地层中的全风化泥质砂岩质地黏软如"橡皮泥"。项目团队利用化学药剂浸 泡、高压水枪冲洗和改造刀盘结构等关键技术，改变黏土黏性并粉碎泥饼，从而减少泥岩附着刀盘，有 效解决盾构刀具磨损大、质量隐患多、掘进效率低等难题。 本文为转载内容，授权事宜请联系原著作权人 昌九高铁连接江西省南昌市和九江市，正线全长137.7公里，是国家《中长期铁路网规划》"八纵八 横"高铁主通道京港高铁的重要组成部分。昌九高铁建成通车后，京港大通道将全部贯通，将进一 ...

Core Viewpoint - The successful completion of the 100th precast box girder installation for the Tong-Su-Jia-Yong High-Speed Railway marks a significant advancement in the construction of the bridge's superstructure, indicating accelerated progress in the project [1] Group 1: Project Overview - The Tong-Su-Jia-Yong High-Speed Railway is a crucial part of the national high-speed railway network, specifically the coastal railway passenger transport corridor, and plays a vital role in enhancing Suzhou's transportation hub status and promoting regional economic and social development [1] - The Su-Nan Grand Bridge, a key challenging project along the railway, spans approximately 25 kilometers and crosses complex environments, including seven high-grade road crossings and twelve dense water networks, while being in proximity to populated areas [1] Group 2: Construction Techniques - The project team has developed a tailored installation plan utilizing a comprehensive control model that includes "simulation rehearsal - real-time monitoring - review and optimization" to overcome construction challenges such as soft soil settlement and water-rich geological conditions [1] - The use of BeiDou positioning technology has enabled precise control of box girder installation errors, ensuring the efficient completion of the precast box girder installation tasks [1]

Core Viewpoint - The completion of the track laying for the Xi'an to Shiyan high-speed railway marks a significant milestone, paving the way for the line's operational launch and enhancing regional connectivity [1] Group 1: Project Overview - The Xi'an to Shiyan high-speed railway, with a total length of 255.7 kilometers and a design speed of 350 kilometers per hour, connects Xi'an East Station to the existing Shiyan East Station [1] - The railway features a high bridge-tunnel ratio of 95%, traversing the Qinling Mountains, which presents unique engineering challenges [1] Group 2: Construction Achievements - The track laying officially commenced on September 8, and the construction team utilized innovative heavy-duty track-laying equipment in conjunction with high-power crawler tractors to enhance construction efficiency [1] - Following the completion of track laying, the construction unit will proceed with the "four electrical" installations, static acceptance tests, and joint debugging and testing to prepare for the line's opening [1] Group 3: Economic Impact - Once operational, the railway will reduce travel time from Xi'an to Shiyan to within one hour and shorten the travel time from Wuhan to Xi'an to approximately 2.5 hours, significantly contributing to the economic and social development of the regions along the route [1]