成都⇌红原4小时直达，久马高速再添87.5公里通车段

Core Viewpoint - The completion of the Jiuma Expressway significantly enhances transportation efficiency in the Aba region, reducing travel time to the Hongyuan Grassland to four hours, while also promoting local economic development through improved connectivity [1][3]. Group 1: Project Overview - The Jiuma Expressway, constructed by Shudao Group, includes a total of 186 kilometers of completed road, with the latest segment of 87.5 kilometers connecting key areas in Aba County and Hongyuan County [1][9]. - The project has overcome extreme environmental challenges, with an average elevation of over 3,300 meters and an annual average temperature of only 1.4°C, addressing complex geological conditions such as wetland soft soil and permafrost [3][6]. Group 2: Environmental Considerations - The project emphasizes ecological protection, implementing innovative techniques for the preservation and transplantation of native grassland, and utilizing new technologies for ecological restoration [3][6]. - A commitment to "prevention first, protection prioritized" has guided the project, ensuring that construction does not compromise the fragile high-altitude ecosystem [3][6]. Group 3: Technological Innovations - The project has introduced advanced technologies to tackle significant engineering challenges, such as the "tunnel cancer" issue related to soft rock deformation, employing a dual-layer steel arch support system [6]. - A focus on mechanization and automation has improved construction efficiency and safety, with the implementation of a three-part construction control system that dynamically adjusts support parameters based on real-time data [6][7]. Group 4: Quality Assurance - The construction team has developed specific strategies to address the unique challenges of the region, including the use of gravel fill and innovative materials to enhance road durability against harsh weather conditions [7]. - The project aims to achieve a "safe and high-quality" expressway standard, ensuring long-term performance and resilience of the infrastructure [7].