新气象丨蜀道又添通途探访首条深入大小凉山腹地的高速公路

Core Viewpoint - The completion of the Le-Xi Expressway from Mabei to Zhaojue in Sichuan marks a significant advancement in transportation infrastructure, enhancing connectivity in the mountainous regions and promoting local economic development [4][19]. Infrastructure Development - The Le-Xi Expressway spans 152 kilometers and is set to officially open on December 31, 2025, ending the history of no highway access for the counties of Leibo, Meigu, and Zhaojue [4][22]. - The expressway features a high bridge-tunnel ratio of 82%, comprising 83 bridges and 36 tunnels, showcasing advanced engineering techniques to navigate challenging terrain [5][8]. Technological Innovations - Innovative technologies such as the TBM (Tunnel Boring Machine) were employed to expedite the construction of the Daliangshan No. 1 Tunnel, reducing the construction time from 7 years to 5 years [8][14]. - A smart snow melting system using heat pipes was implemented to ensure road safety during winter, marking the first application of such technology in Southwest China's expressways [9][17]. Environmental Protection - The project included a comprehensive plant protection plan for the endangered species, such as the national first-class protected plant, the "Dove Tree," with a survival rate exceeding 90% for transplanted specimens [11][14]. - The construction approach emphasized ecological preservation, including the use of elevated living quarters for project staff to minimize ground disruption [16]. Economic Impact - The expressway significantly reduces travel time, with the journey from Zhaojue to Mabei cut from 5 hours to 1.5 hours, and from Chengdu reduced from 9 hours to 4 hours, benefiting over a million residents [19][20]. - The infrastructure is expected to stimulate local tourism and economic activities, with plans to develop ecological tourism resources in the region [20]. Governance and Oversight - The project has been supported by rigorous oversight from local disciplinary inspection and supervision agencies, ensuring transparency and accountability in the use of project funds, with over 55 million yuan secured for land acquisition [21].