Core Viewpoint - The Baoyin High-speed Railway is a crucial part of China's "Eight Horizontal and Eight Vertical" high-speed rail network, with the Yinba branch line enhancing regional connectivity and economic development [2][4] Group 1: Project Overview - The Yinba branch line starts from Yinchuan City in Ningxia and ends at Bayannur City in Inner Mongolia, covering a total length of approximately 111 kilometers [2] - The Helan Mountain Tunnel, as the first single-line passenger tunnel in China designed for a speed of 200 km/h, is a key challenging project within this branch line [2] Group 2: Environmental and Economic Impact - The newly completed Helan Mountain Tunnel is 8,792 meters long and is located at the intersection of the Tengger Desert and the Yellow River basin, crossing sensitive ecological areas such as the Sand Winter Green Nature Reserve and the Helan Mountain National Nature Reserve [4] - The completion of the Baoyin High-speed Railway's Yinba branch line will improve the railway network layout in Ningxia and Inner Mongolia, enhance inter-regional connectivity, and promote coordinated economic and ecological development along the route [4]
长8792米!我国首条穿越贺兰山铁路隧道贯通
Yang Shi Xin Wen·2025-08-16 05:37