这项超级工程，“豆腐渣中打隧道”

Core Viewpoint - The construction of the Chuanwen Expressway is a significant project facing multiple challenges, including complex geological conditions and strict environmental regulations, while also serving as a vital transportation link for regional development and disaster response [1][2][3]. Group 1: Project Overview - The Chuanwen Expressway, officially started in October 2024, is part of the National Highway Network Plan and aims to connect the Chengdu Plain to key tourist areas like Jiuzhaigou and Huanglong [1]. - The estimated investment for the project is 56.5 billion [1]. - Upon completion, the expressway is expected to enhance regional logistics capabilities and support national development strategies such as the Belt and Road Initiative [1][2]. Group 2: Engineering Challenges - The expressway spans 198.73 kilometers, with a bridge-tunnel ratio of 93.7%, making it the highest in Sichuan province for similar projects [2]. - The project faces significant geological challenges, including 788 identified geological hazards such as landslides and rockfalls along nearly 170 kilometers of the route [2][3]. - The elevation difference between the starting and ending points is 1,871 meters, which is higher than Mount Tai [2]. Group 3: Safety and Environmental Management - The construction is subject to strict environmental regulations due to its proximity to sensitive ecological areas, including the Minjiang River and national parks [3]. - A "safety steward" team, consisting of experienced engineers and safety experts, has been established to enhance safety management and risk control during construction [5]. - Innovative surveying techniques, including aerial and drone technologies, are employed to better understand geological conditions and mitigate risks [4].