西延高铁进入试运行阶段

Core Points - The Xi'an to Yan'an high-speed railway has officially entered the trial operation phase, marking a significant step towards its full opening [1][2] - The railway spans 299.8 kilometers with a design speed of 350 kilometers per hour, featuring a high bridge-tunnel ratio of 91% due to complex geological conditions [4] Group 1: Trial Operation Details - The trial operation phase involves comprehensive testing of various subsystems and overall system reliability under simulated operational conditions, expected to last for at least one month [1] - Prior to this phase, the railway underwent 64 days of joint debugging and testing, with nearly 400 test trains operated to collect extensive data on track geometry, contact network voltage, and signal response speed [2] Group 2: Construction and Technological Innovations - The railway is the first high-speed line in Northwest China to achieve full 5G coverage, utilizing innovative combined tower designs to enhance equipment stability [4] - The dynamic TQI (Track Quality Index) average value of the railway is 1.33, significantly lower than the operational standard of 3, indicating superior track smoothness and stability [2] Group 3: Economic and Social Impact - Once operational, the travel time from Xi'an to Yan'an will be reduced from two and a half hours to approximately one hour, enhancing the regional connectivity and supporting rural revitalization in the revolutionary areas of Shaanxi province [4]