精伊高速公路打破遇雪封路“魔咒”

Core Viewpoint - The Jingyi Expressway, connecting Urumqi and the Ili River Valley, has successfully completed its final major construction phase, breaking the "snow closure curse" in Xinjiang by providing a reliable all-weather transportation route [1][3]. Group 1: Project Overview - The Jingyi Expressway (G577) spans 92.545 kilometers, featuring a significant bridge-tunnel ratio of 49.1%, indicating that nearly half of the route consists of bridges and tunnels [2]. - The project includes the construction of the North Tianshan Tunnel, which is 11.88 kilometers long, overcoming challenging geological conditions [2]. Group 2: Engineering Challenges and Innovations - The construction team employed innovative techniques such as short advance drilling, weak blasting, and strong support to ensure safety during the tunnel's construction, which took over four years to complete [2]. - The Bo'erbosong Grand Bridge, a key structure of the expressway, measures 938 meters in length and has a maximum pier height of 144 meters, setting a new height record for bridges in Xinjiang [4]. Group 3: Safety and Resilience Features - The expressway incorporates advanced disaster prevention designs, including a snow protection system at the tunnel entrance, enhancing its resilience against severe winter weather [2]. - The construction team utilized real-time dynamic measurement and total station re-measurement to maintain precision in the bridge's foundation, achieving a positional deviation of within ±2 centimeters [4][5]. Group 4: Strategic Importance - The completion of the Jingyi Expressway is expected to significantly reduce travel time between Urumqi and Ili by one hour, making it the most convenient interstate route in the region [1][3]. - The project aligns with national transportation strategies aimed at improving modern comprehensive transportation systems and enhancing connectivity in underdeveloped areas [5].