Core Points - The Guangzhan High-Speed Railway has officially entered the joint debugging and testing phase, with the first segment from Xinxing South to Zhanjiang North set to begin testing on August 25, followed by the Guangzhou to Xinxing South segment on September 25 [1] Group 1: Project Overview - The Guangzhan High-Speed Railway has a total length of approximately 401 kilometers and a total investment of 99.8 billion yuan, making it a significant part of China's "Eight Vertical and Eight Horizontal" high-speed rail network [1] - This project is the most technically complex, longest, and largest investment railway project constructed independently by Guangdong Province [1] Group 2: Route and Connectivity - The railway line starts from Guangzhou Station and passes through cities including Foshan, Zhaoqing, Yunfu, Yangjiang, Maoming, and finally reaches Zhanjiang North Station [1] - Once completed, the railway will significantly reduce travel time between the western Guangdong region and the Guangdong-Hong Kong-Macao Greater Bay Area, cutting the travel time from Guangzhou to Zhanjiang from 3 hours to approximately 1.5 hours [1] Group 3: Importance of Joint Debugging and Testing - Joint debugging and testing is a crucial step before the railway opens, simulating operational conditions to test various systems including tracks, bridges, tunnels, power supply, communication, and disaster monitoring [1] - This phase is essential for identifying and addressing any issues, providing important technical support for the railway's operational readiness [1]

Core Viewpoint - The cold sliding test for the Xi'an to Yan'an high-speed railway has officially commenced, marking a significant step towards the railway's joint debugging and testing phase [1] Group 1: Project Overview - The cold sliding test began on August 18, with a train departing from the Gengzhen Line Station towards Tongchuan, covering a total of over 280 kilometers [1] - The test involves 10 stations and related connecting sections, assessing the geometric parameters of the electrified railway contact network without power [1] Group 2: Significance and Impact - The Xi'an to Yan'an high-speed railway is the first high-speed rail in the revolutionary old area of northern Shaanxi, expected to reduce travel time from 2.5 hours to approximately 1 hour [1] - The completion and operation of this railway will enhance the national high-speed railway network layout and contribute to the rural revitalization of revolutionary old areas [1]

Core Viewpoint - The completion of the track-laying construction for the Guangzhou-Zhanjiang High-Speed Railway (广湛高铁) marks a significant milestone, laying a solid foundation for the line's operational launch [1] Group 1: Project Overview - The Guangzhou-Zhanjiang High-Speed Railway extends 401 kilometers from Guangzhou Station to Zhanjiang North Station, with a designed speed of 350 kilometers per hour [1] - The railway connects key regions including the Guangdong-Hong Kong-Macao Greater Bay Area, Hainan Free Trade Port, and the Beibu Gulf city cluster, serving as an important high-speed rail corridor [1] Group 2: Economic Impact - Once operational, the railway is expected to significantly reduce travel time between the western Guangdong region and the Guangdong-Hong Kong-Macao Greater Bay Area, playing a crucial role in promoting economic and social development in the western Guangdong area [1]

Core Viewpoint - The successful completion of the Helan Mountain Tunnel marks a significant milestone for the Baoyin High-speed Railway's Yinba branch, laying a solid foundation for its operational launch [1][3]. Group 1: Project Overview - The Helan Mountain Tunnel, located between Yinchuan City in Ningxia and Alashan League in Inner Mongolia, spans 8,792 meters and is the first railway tunnel to cross the Helan Mountain in China [3]. - The Yinba branch of the Baoyin High-speed Railway is a crucial part of the national "Eight Horizontal and Eight Vertical" high-speed rail network, with a total length of 111 kilometers, starting from Yinchuan City and ending at Bayannur City in Inner Mongolia [6]. Group 2: Engineering Challenges and Solutions - The tunnel's construction faced significant geological challenges, including crossing six regional faults, two fold structures, and two areas with dense joints, necessitating advanced design solutions such as pre-reinforcement and water isolation [5]. - The construction process involved comprehensive geological forecasting techniques, including geological radar and advanced drilling, to assess and mitigate risks such as soft rock deformation and surrounding rock instability [5]. Group 3: Economic and Social Impact - The completion of the project is expected to play a vital role in promoting local economic development, enhancing tourism resource utilization, and meeting passenger travel demands [6].

Core Points - The last tunnel of the Yukun High-speed Railway's Sichuan-Yunnan section, the Junlian Tunnel, successfully broke through on August 15, marking the completion of all 28 tunnels in this section [1] - Once completed, the Yukun High-speed Railway will enable travel from Chengdu to Kunming in approximately 3 hours [1] Group 1 - The Junlian Tunnel is located between Yibin County in Sichuan and Yanjin County in Yunnan, featuring complex geological conditions and is a key project for the Yukun High-speed Railway [1] - The tunnel measures 7,888 meters in length with a maximum depth of 635 meters, and 84% of the surrounding rock is classified as level four and five, indicating significant construction challenges [1] - Advanced technologies such as geological radar scanning and advanced horizontal drilling were utilized to predict risks associated with karst water and gas distribution, leading to substantial cost savings in construction [1] Group 2 - The maximum monthly excavation rate for the Junlian Tunnel reached 140 meters, and the tunnel was completed ahead of schedule with a focus on safety [1] - Currently, the roadbed engineering for the Sichuan-Yunnan section is 99% complete, while bridge engineering is 92% complete, with electrical and station construction progressing rapidly [1]

Group 1 - The completion of the main pier body for the T-shaped turning beam of the Weishui High-speed Railway marks a critical phase in the upper structure construction, laying the foundation for subsequent turning operations [1] - The main pier of the turning bridge adopts a unique square pier design within the project segment, utilizing advanced double-line rigid wall pier technology to optimize structural shape and material distribution, ensuring sufficient strength and stability while saving materials and reducing land occupation [4] - The construction area of the Weishui High-speed Railway is the only segment adjacent to an operational line, with a minimum construction distance of only 14.2 meters, posing significant safety risks and complex construction organization [7] Group 2 - The project team implemented a three-tier quality control system during construction, ensuring "zero error" management of indicators such as rebar spacing and protective layer thickness, thereby controlling engineering quality from the source [7] - The Weishui High-speed Railway, approximately 340 kilometers long with a design speed of 350 kilometers per hour, will serve as a key rapid passenger transport corridor connecting the Beijing-Tianjin-Hebei region with the Yangtze River Delta, enhancing personnel exchanges and economic ties between the two regions [8]

Core Viewpoint - The successful completion of the Helan Mountain Tunnel marks a significant milestone in the construction of the Baoyin High-speed Railway, which is a crucial part of China's national high-speed rail network [1] Group 1: Project Overview - The Helan Mountain Tunnel, constructed by China Railway Fifteenth Bureau, has a total length of 8,792 meters and is located at the boundary between Alxa Left Banner in Inner Mongolia and Yinchuan in Ningxia [1] - The tunnel's geological conditions are extremely complex, with a maximum burial depth exceeding 230 meters, and it requires passing under six fractured zones and the Ming Great Wall, categorizing it as a Class I high-risk tunnel [1] Group 2: Construction Techniques - To minimize disturbance to the Ming Great Wall, the construction team upgraded traditional blasting methods to a low-disturbance combination technique involving "mechanical excavation + C6 drilling machine operation + dynamic monitoring," ensuring high-quality and efficient tunneling [1] Group 3: Strategic Importance - The Baoyin High-speed Railway is an important component of the national "Eight Horizontal and Eight Vertical" high-speed rail network, with the Yinba branch line starting in Yinchuan and ending in Bayannur, Inner Mongolia [1] - The Helan Mountain Tunnel is identified as a critical and challenging control project within this branch line [1]

Core Points - The completion of the Helan Mountain Tunnel, part of the Baoyin High-speed Railway's Yinba branch, marks a significant achievement in China's infrastructure development, with a total length of 8,792 meters [1] - The tunnel is located at the intersection of Inner Mongolia and Ningxia, facing complex geological conditions and high environmental sensitivity, including a maximum burial depth exceeding 230 meters [1] - The construction team employed innovative low-disturbance techniques to minimize impact on historical sites, ensuring efficient and high-quality tunneling [1] Infrastructure Development - The Helan Mountain Tunnel is a critical control project for the Baoyin High-speed Railway's Yinba branch, which spans approximately 111 kilometers from Yinchuan to Bayannur [1] - This railway line is an essential part of China's national "Eight Horizontal and Eight Vertical" high-speed rail network, aimed at enhancing regional connectivity [1] - The project is expected to significantly contribute to the high-quality economic and social development of the Ningxia and Inner Mongolia regions [1]

高铁，这个现代交通的奇迹，以风驰电掣的速度和无与伦比的舒适感，彻底改变了我们的出行方式。 可有一个现象，常常让以金钱换时间的商旅人士苦恼不堪：为什么一到山东境内，高铁速度就好像变慢了？ 事实真的如此吗？ 以北京南开往青岛的G1061次列车为例，我们对比看看。 | | | G1001次列车（北京电-青岛）时刻表及盖价信息： 列车型号：复兴号(CR40088-B型） | | | | 订票 北京南到青岛车票预订 ★品牌酒店7折起★特价机票1折起★ | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | 车次 | G1061 | 运行时间 | 4小时12分 | | 北京南站→青岛站（当天到） | | | | 评 | 始发站 | 北京南站 | 终点站 | 青岛站 | 机E | 硬座 | 软座 | | | 品 | 发车时间 | 07:34 | 到站时间 | 11:46 | | 硬卧上 | 硬骨中 | | | 信 | 列车类型 | 高速动车组列车(高铁) | 里程 | 754公里 | 自 | 硬骨下 | 软卧 | | | | | 车次信息时有变化 ...

为确保隧道开挖质量和进度，施工团队在施工中配备了新一代自行式液压仰拱栈桥、智能数字化浇筑衬 砌台车、驭铁龙通风机等先进设备，辅以信息化监控指挥系统，实现掌子面掘进、仰拱施工、二衬浇筑 等有序推进，顺利完成隧道贯通目标。 南珠高铁玉林北至岑溪东段正线全长84.759公里，目前施工已进入全面攻坚阶段，站后"四电"和站房工 程正有序推进，无砟轨道工程已启动施工，预计明年建成通车，届时将进一步改善桂东地区交通条件， 带动沿线地区经济社会发展。（记者庞革平 陆新健） 人民日报海外版南宁8月12日电 8月12日，南珠（南宁—珠海）高铁玉林北至岑溪东段重难点控制性工 程——天星一号隧道顺利贯通，标志着该区段22座隧道全部实现贯通，为后续无砟轨道及铺轨工程打通 施工通道，项目建设取得重要进展。 位于广西壮族自治区岑溪市的天星一号隧道全长4574.71米，最大埋深约165米，洞身下穿水库及破碎 带，地质条件极为复杂，面临围岩变形、结构面坍塌、基底软化等多重风险，施工难度大。 ...