Core Points - The Lushih Expressway's Lushih section has been completed, marking a significant improvement in travel time from Chengdu to the Hailuogou scenic area, reducing it to approximately 3.5 hours [3] - The expressway is a crucial part of the Sichuan provincial highway network, connecting key regions and enhancing accessibility [4][5] - The construction faced significant challenges due to complex terrain and geological conditions, with a high bridge-tunnel ratio of 86.5% [5][6] Infrastructure and Engineering - The Lushih Expressway features a dual four-lane design with a speed limit of 80 km/h, and currently, the section is free to use [3] - Innovative construction techniques, such as "zero excavation" for tunnel construction, were employed to minimize environmental impact [5][6] - The project includes advanced seismic design and large-span steel structures, improving safety and reducing weight compared to traditional materials [5] Economic and Cultural Impact - The expressway enhances tourism by providing direct access to the Hailuogou scenic area, expected to increase annual visitor numbers by over 20% [7][8] - It supports local agriculture by improving market access for products like pepper and wild mushrooms, benefiting local economies [8] - The highway also integrates cultural elements, commemorating historical events and promoting local heritage along its route [7]

泸石高速泸定南互通。 12月30日中午12点，经过5年多艰苦建设，泸定至石棉高速泸定县伞岗坪互通至海螺沟互通段49公里建 成，其中45.61公里投入试运行，成都至海螺沟景区实现高速公路直通，行车时间缩短到3.5小时，城市 与雪山的距离变得更近。特别提醒，该路段试运行期间免费通行。 安全之路 泸石高速泸定段通车 平稳穿越8级烈度断裂带 泸石高速此次建成的49公里起于甘孜州泸定县伞岗坪互通，经泸定南互通、冷碛互通，止于海螺沟互 通，双向四车道，设计时速80公里。该路段主线共有桥梁34座、隧道8座、互通式立交4处。目前，泸定 南、冷碛、海螺沟3处收费站同步开通，配套服务区（停车区）后续将投用。 12月11日，华西都市报、封面新闻记者曾在通车前试跑该路段，路线沿着大渡河展布，两侧是高山峡 谷。项目设计现场负责人、四川公路设计院高级工程师马青力介绍，泸石高速建设最大的痛点和难点是 复杂的地形地质条件——路线平行近接多条区域性活动断裂带，地震基本烈度为8度，滑坡、泥石流、 崩塌、大型堆积体等地质灾害频发。 "我们选线的原则是尽量绕避地质灾害点，事实证明现在的选线是比较合理的，经受住了'9·5'泸定地震 的考验。"马青力说 ...

Core Viewpoint - The opening of the Luzhou-Shi'an Expressway (Luzhi Expressway) in Sichuan is expected to significantly alleviate traffic congestion on the popular tourist route in western Sichuan by effectively diverting over 80% of the traffic from the original provincial road [1] Group 1: Project Overview - The Luzhi Expressway is a key component of the "Sichuan Provincial Expressway Network Plan (2019-2035)" with a total length of approximately 96.5 kilometers and a high bridge-tunnel ratio of 86.5% [2] - The expressway serves as a horizontal connection between the Yakang Expressway and the Yaxi Expressway, with the completed sections totaling 82 kilometers, including the recently opened 49-kilometer Luzhou section [2] - The Luzhou section starts at the Sangangping Interchange in Luding County and connects to the Yakang Expressway, passing through Luding South and Lengqiao, ending at the Haizigou Interchange [2] Group 2: Infrastructure and Design - The Luzhi Expressway features a dual four-lane design with a speed limit of 80 km/h, including 34 bridges, 8 tunnels, and 4 interchanges along the route [2] - The construction faced significant challenges due to complex geological conditions, including high seismic activity and multiple active fault zones [2] - The construction team prioritized ecological protection and safety, employing a "zero excavation" method at tunnel entrances to minimize disturbance to the original landforms [2] Group 3: Economic and Tourism Impact - Once fully completed, the Luzhi Expressway will serve as a major transportation artery connecting numerous natural and cultural attractions in western Sichuan, enhancing the overall expressway network in the province [2] - The expressway is expected to improve travel efficiency and visitor experience to key tourist destinations such as Haizigou Glacier Forest Park and Moxi Ancient Town [2]

Core Insights - The Luzhou-Shi Expressway, specifically the 49-kilometer section connecting core areas of Luding County to the Hailuo Valley scenic area, is set to significantly reduce travel times and alleviate traffic congestion in the region [3][4]. Group 1: Project Overview - The Luzhou-Shi Expressway has a total length of approximately 96.5 kilometers, with an estimated total investment exceeding 17.4 billion yuan, designed as a dual four-lane highway with a speed limit of 80 km/h [5]. - The project connects the Yakan and Yaxi expressways, starting from the Sangangping interchange in Luding County and ending at the Dashanshu interchange in Shimen County, Yaan [5]. Group 2: Traffic Impact - Once operational, the travel time from Luding to Hailuo Valley will decrease from 1.5 hours to 50 minutes, while the journey from Chengdu to Hailuo Valley will be reduced from 4 hours to approximately 3.5 hours [4]. - The new expressway is expected to divert 80% of the traffic from the original provincial road, effectively alleviating traffic congestion in the western Sichuan tourism area [4]. Group 3: Engineering and Safety - The 49-kilometer section features over 60 bridges, with bridge and tunnel structures accounting for 86.5% of the total project [3]. - A comprehensive load test was conducted on 23 different types of bridges, assessing key metrics such as displacement and vibration, with all indicators meeting design and regulatory requirements [3].

Core Viewpoint - The completion of the Haizhuogou and Victory tunnels marks a significant milestone in the construction of the Luzhi Expressway, which is expected to enhance connectivity and reduce travel time between Luding and Shimian to approximately one hour by 2026 [1][3]. Group 1: Tunnel Construction Details - The Haizhuogou tunnel is 4080 meters long and is located between two active fault zones, facing geological challenges such as mud bursts and water inflow during construction [1]. - The Victory tunnel has a right line length of 5290 meters and a left line length of 5345 meters, traversing the Sichuan-Western Yunnan Plateau and the Gongga Mountain ecological protection area, with significant geological activity [2]. - Both tunnels are equipped with advanced monitoring systems and innovative construction techniques to mitigate risks associated with geological conditions [2]. Group 2: Project Overview and Economic Impact - The Luzhi Expressway spans 96.511 kilometers with an estimated total investment of approximately 17.408 billion yuan, serving as the second expressway in Ganzi Prefecture [3]. - The project connects the Yakan and Yaxi expressways, significantly improving regional transportation and economic integration, particularly for the Tibetan and Yi corridors [3]. - The Luding section is set to open an additional 45 kilometers this year, with the entire expressway aiming for completion by 2026, transforming the travel experience between Luding and Shimian [3].