时速350公里 杭衢高铁进入开通倒计时

Group 1 - The Hangzhou to Quzhou high-speed railway has entered the joint debugging and testing phase, expected to be operational by the end of the year [1] - The railway spans approximately 131 kilometers with a design speed of 350 kilometers per hour and a bridge-tunnel ratio of 78.7% [1] - Key engineering projects include the Xin'an River Grand Bridge and the Tianchishan Tunnel, with the latter being the longest tunnel at approximately 4,154 meters [1] Group 2 - The completion of the Hangzhou to Quzhou high-speed railway will create an efficient transportation artery between the Hangzhou Bay Economic Circle and the Jinqiu-Li Economic Belt [2] - This railway is significant for optimizing the regional railway network structure and supporting the high-quality development of the Yangtze River Delta integration [2]