Core Insights - The completion of three major highways in Liaoning Province marks a significant achievement in the province's transportation infrastructure, contributing to the "14th Five-Year Plan" and the three-year action plan for comprehensive revitalization [1][4] - The total length of the newly constructed highways is 636 kilometers, enhancing the connectivity of Liaoning's national and provincial road networks [1][4] Group 1: Highway Projects Overview - The Jingha Expressway expansion is the first long-distance single-lane heavy-load traffic highway in the country, spanning 238 kilometers and connecting key cities and towns in Northeast China [2] - The Benhuan Expressway connects the eastern cities of Northeast China, covering 223 kilometers with a design speed of 100 km/h, featuring numerous bridges and tunnels [3] - The Lingsui Expressway, with a length of 175 kilometers, serves as a crucial link between major transportation corridors, promoting regional economic development [3] Group 2: Construction Achievements - The average construction period for the three highways was completed one year ahead of schedule, showcasing effective project management and innovative construction techniques [2] - The total number of highway construction projects in Liaoning during the three-year action plan is 14, with a total length of 1,385 kilometers, significantly increasing the province's highway network [4] - From 2022 to the end of 2025, Liaoning is expected to complete 732 kilometers of new highways, five times the amount built during the previous five-year plan [4]

Core Viewpoint - The G8513 Jiuzhaigou to Mianyang Expressway (referred to as "Jiuzhai Expressway") has officially opened, marking the end of the historical lack of expressway access for Jiuzhaigou, Pingwu, and Beichuan counties in Sichuan [1][3]. Group 1: Infrastructure Details - The Jiuzhai Expressway spans a total length of 245.809 kilometers, featuring a dual four-lane highway standard with a design speed of 80 km/h [3]. - The expressway includes 131 bridges, 45 tunnels, 18 interchanges, 17 toll stations, and 6 service areas, with a bridge-tunnel ratio of 82.15%, indicating a high density of bridge and tunnel structures [3]. - The expressway was opened in segments, with the final segment connecting the Jiuzhaigou Chaimenguan to Jiamuhai section completed in 2023, achieving full connectivity [3]. Group 2: Connectivity and Ecological Considerations - The Jiuzhai Expressway connects with the G8513 Pingtian to Mianyang Expressway in the north and links to the G5 Jingkun Expressway and G93 Chengyu Ring Expressway in the south, forming a significant interprovincial highway corridor between Sichuan and Gansu [5]. - The expressway traverses sensitive ecological areas, including the Giant Panda National Park and the National Aquatic Germplasm Resource Conservation Area, with a high bridge-tunnel ratio of 95% in the panda park section, minimizing ecological impact [5]. - The expressway integrates over 30 cultural and tourism resources, enhancing the region's tourism potential through a design that reflects local cultural elements [5]. Group 3: Construction Challenges - Construction of the Jiuzhai Expressway began in 2016 and involved over 40,000 workers, facing significant geological challenges, including multiple fault zones and natural disasters such as the 8.0 magnitude Jiuzhaigou earthquake [7]. - The Baima Tunnel, noted for its high design and construction difficulty, passes through seven fault zones and has a maximum burial depth of 1,092 meters, highlighting the engineering challenges faced during construction [7].

Core Points - The completion of the main span of the New Layer Bridge, part of the Changshen Expressway expansion project, marks a significant milestone for the project, laying a solid foundation for future operations [1][3] - The New Layer Bridge, a key control project, spans 190 meters and is designed as a prestressed concrete variable cross-section box girder structure, ensuring safety and efficiency during construction [1][3] Project Details - The bridge crosses the Jingjiu Railway at a 30-degree angle, with a clearance of over 11.96 meters from the bridge bottom to the track surface, meeting railway safety standards [1][3] - The Changshen Expressway expansion project, approximately 116.6 kilometers long, is a key project in Guangdong's 14th Five-Year Plan, enhancing connectivity between the Guangdong-Hong Kong-Macao Greater Bay Area and central regions like Jiangxi [3] - The project is currently in the final stages of construction, focusing on bridge deck, pavement, and ancillary works, aiming for full operation soon [3]

Core Points - The Chengya Expressway expansion project has officially entered the construction phase, marking a significant infrastructure development in Sichuan Province as part of the national "14th Five-Year Plan" [2] - The project involves a total estimated investment of nearly 30 billion yuan, with a planned completion date in 2029 [2] - The expansion will increase the expressway's capacity by approximately 50% by widening the lanes from a dual six-lane and four-lane configuration to a dual eight-lane configuration [3] Group 1: Project Overview - The Chengya Expressway, originally opened in 2000, will be expanded to approximately 159 kilometers, including a new Lu Mountain branch line of 24.367 kilometers [2] - The main line will undergo significant upgrades, including the reconstruction of 20 interchanges and the addition of 4 new interchanges [2] - The new Lu Mountain branch will reduce travel time between Lu County and Mingshan District from 1 hour to 20 minutes, addressing the lack of direct expressway connections [2] Group 2: Technological and Operational Enhancements - The expansion will incorporate smart highway features, enhancing operational management through digital and intelligent systems, including dynamic lane control and emergency response measures [3] - The project aims to create a safer, more convenient, and comfortable expressway experience for travelers, integrating tourism and transportation [3] Group 3: Construction Strategy - The construction will focus on minimizing traffic disruption by implementing design and traffic organization strategies, such as single-side widening and phased construction [4] - The project will ensure that the existing road base remains stable while integrating new construction, addressing potential settlement issues through advanced engineering techniques [4] - All construction units have commenced work on various segments of the project, with simultaneous development of supporting infrastructure to ensure effective logistics and support [5]

Group 1 - The project spans approximately 131.3 kilometers, with 86.3 kilometers located in Panzhihua and 45 kilometers in Liangshan Prefecture, featuring a dual four-lane highway standard and a design speed of 80 km/h [2] - The project includes 67 bridges, 20 tunnels, and 10 interchanges, with a bridge-tunnel ratio of about 80% [2] - The construction of the Gesala Tunnel, which will be approximately 12 kilometers long, is notable as it will become the world's highest elevation difference highway tunnel upon completion [6] Group 2 - The Tongde Tunnel, measuring about 14.5 kilometers, is set to become the world's longest single-slope highway tunnel [6] - The Jinsha River Grand Bridge will be the domestic highway cable-stayed bridge with the largest width variation in the same category [6] - Once completed, the travel time from Panzhihua city to Yan County will be reduced from 5 hours to approximately 2 hours, enhancing connectivity with four major regional traffic arteries [6]

Core Points - The Sichuan Yibin to Panzhihua Expressway's key project, the Xiejiawan Long Gas Tunnel, achieved dual-track completion on September 27, 2023, laying a solid foundation for the section's completion by 2026 [1][3] Group 1: Project Details - The Xiejiawan Tunnel is located in Yibin City, Sichuan Province, with a total length of 4,295 meters and a maximum depth of 712 meters, making it the longest tunnel in the Yibin section of the expressway [3] - The construction faced significant challenges due to the need to traverse poor geological conditions, including coal strata and karst development zones, as well as difficult material transportation [3] - The project team implemented a "no fire" process for gas control, utilized advanced geological prediction methods, and adhered to principles of short advance, weak blasting, strong support, and rapid closure during construction [3] Group 2: Project Specifications - The Yibin to Panzhihua Expressway has a total length of 446.36 kilometers, designed to a dual four-lane standard with a speed limit of 80 km/h [4] - The expressway will connect with the completed G4216 line and consists of three construction segments: from Ping Shan New City to Jinyang, Jinyang to Ningnan, and Ningnan to Panzhihua [4] - Once completed, the expressway will end the history of no expressway access for the counties of Leibo, Jinyang, and Butuo in Liangshan Prefecture [4]

Core Points - Three major highway projects in Liaoning Province have been completed and opened to traffic, enhancing the regional transportation network and connectivity [1][2] - The projects include the Jingha Expressway expansion, the Benxi to Jian Expressway, and the Lingyu Expressway, all of which are crucial components of the national and provincial highway networks [1][2] Group 1: Project Details - The Jingha Expressway expansion spans 238 kilometers, converting a dual six-lane highway into a dual ten-lane highway with a design speed of 120 km/h, becoming the first long-distance ten-lane heavy-load expressway in China [1] - The Benxi to Jian Expressway covers 223 kilometers with a dual four-lane design and a speed limit of 100 km/h, serving as a vital route for tourism, ecology, and industry in the eastern Liaoning region [1] - The Lingyu Expressway extends 175 kilometers with a dual four-lane configuration and a design speed of 100 km/h, linking major transportation corridors and integrating the western Liaoning and eastern Inner Mongolia regions into the Beijing-Tianjin-Hebei economic circle [2] Group 2: Infrastructure Development - Since the start of the 14th Five-Year Plan, Liaoning has aggressively pursued transportation infrastructure development, with additional projects like the Taihei Expressway expected to open in October 2023 [2] - Ongoing projects include the Qinshen Phase I and the Xinfu Expressway, which are set to commence operations by March 2025, while the Qinshen Phase II and the Benzhuang Expressway are anticipated to start construction by the end of 2025 [2]

Core Viewpoint - The construction of the Qilin Expressway demonstrates a commitment to the national "dual carbon" strategy and the concept of "green mountains and clear waters are as valuable as mountains of gold and silver" by utilizing modified titanium gypsum waste as a roadbed material, thus promoting sustainable development and resource recycling [1][2]. Group 1: Project Overview - The Qilin Expressway, approximately 57.1 kilometers long, connects key towns in western Shandong and serves as an important transportation link between the western Shandong region and the provincial capital economic circle [1]. - The project addresses the challenges of material shortages for roadbed filling and the disposal of industrial solid waste by converting accumulated titanium gypsum waste from local titanium dioxide production into qualified roadbed filling material [1][2]. Group 2: Environmental Impact - Traditional roadbed construction methods require extensive extraction of natural soil and stone materials, which can lead to ecological damage and increased carbon emissions due to long-distance transportation [2]. - The project utilizes a mature and reliable technology for using titanium gypsum waste, which has been validated in multiple scenarios within the province, offering a cost-effective alternative to traditional filling materials [2]. Group 3: Technical Innovations - To ensure the safety and stability of the roadbed using industrial waste, a dedicated team developed a specialized curing agent and established standardized mixing processes, overcoming previous limitations of titanium gypsum [5]. - The modified titanium gypsum mixture exhibits superior performance in load-bearing capacity, water stability, and resistance to shrinkage and cracking compared to traditional materials, fully complying with high-grade highway design standards [5]. Group 4: Replicable Solutions - The Qilin Expressway project exemplifies a shift from traditional resource extraction to waste recycling, promoting a green ecological concept in highway construction [6]. - Each kilometer of the titanium gypsum roadbed reflects the spirit of "resource recycling," providing a replicable and scalable technical model for similar projects across the country [6][8].

四川宜攀高速深达547米的白鹤滩隧道竖井贯通 中新网成都9月23日电 (记者 刘忠俊)9月23日，四川宜宾市新市镇至攀枝花仁和区高速公路(以下简称"宜 攀高速")全线深达547米的白鹤滩隧道竖井顺利贯通。这是该隧道双幅贯通后，项目攻克复杂地质的又 一关键突破。 宜攀高速公路深达547米的白鹤滩隧道竖井贯通现场。蜀道集团供图 白鹤滩隧道是宜攀高速的"硬骨头"，作为分离式特长隧道，左线长6644米、右线长6714米，最大埋深 863米，最大日涌水量达6.18万立方米。其地处地质极端复杂区域，围岩自稳能力差，施工难度极大。 此次贯通的竖井位于隧道主洞左右线间，直径6米、深547米(相当于180层楼高)，承担右线送排风与左 线排烟功能。施工中，竖井部分段落围岩条件差，涌水、突泥、坍塌风险贯穿全程，技术与安全风险均 处行业高位。 本文为转载内容，授权事宜请联系原著作权人 中新经纬版权所有，未经书面授权，任何单位及个人不得转载、摘编或以其它方式使用。 关注中新经纬微信公众号(微信搜索"中新经纬"或"jwview")，看更多精彩财经资讯。 宜攀高速公路深达547米的白鹤滩隧道竖井施工作业现场之一。蜀道集团供图 目前，宜攀高 ...

Group 1 - The Shantou-Meizhou Expressway expansion project, the first of its kind in Guangdong's mountainous and hilly areas, spans approximately 88 kilometers and is set to be completed by 2026, expanding from a dual four-lane to a dual eight-lane highway [1] - The project emphasizes green, low-carbon, and efficient construction principles, achieving multiple environmental innovations in resource recycling, energy conservation, and construction process innovation [1] - The project introduces a new "precast T-beam lifting and rotating technology," which allows for the reuse of existing bridge beams, filling a technological gap in Guangdong's highway bridge renovation [1] Group 2 - The project excels in the "turning waste into treasure" approach, utilizing mobile and fixed stone production lines for recycling and processing, significantly reducing the need for external stone purchases and waste disposal [2] - Approximately 1.84 million tons of crushed stone were produced from the processed earth and rock materials along the entire route, equivalent to the load capacity of 60,000 fully loaded heavy trucks, achieving "zero external transportation of waste and full resource recycling" [2]