西延高铁开通！革命圣地延安迎来“高铁时代”

Core Viewpoint - The opening of the Xi'an-Yan'an high-speed railway marks a significant advancement in China's transportation infrastructure, reducing travel time and enhancing economic opportunities in the region [2][4]. Group 1: Railway Development - The Xi'an-Yan'an high-speed railway is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network, with a total length of 299 kilometers and a design speed of 350 kilometers per hour [2]. - The railway construction faced significant challenges due to the diverse geographical features it traverses, including the Loess Plateau, with a bridge-tunnel ratio of 91% [2]. - Innovative construction techniques, such as the "waist beam temporary support," were employed to ensure the stability of the tunnels, achieving an average track quality index of 1.33mm, which is among the best in China's high-speed rail [2]. Group 2: Economic Impact - The Xi'an-Yan'an high-speed railway is expected to boost annual tourist reception in Yan'an to over 50 million, facilitating the rapid transport of local products like apples and Xiaomi goods [4]. - The railway is anticipated to create new opportunities for businesses along the route, with the potential for a model where "research is in Xi'an, and production is in Yan'an" [4]. - The opening of the railway contributes to China's high-speed rail operational mileage exceeding 50,000 kilometers, symbolizing a significant step in the country's modernization journey [4].