Core Viewpoint - The Daqin Railway, a crucial coal transportation route in China, is undergoing a 20-day autumn maintenance period from October 7 to October 26, aimed at ensuring stable coal supply for the upcoming winter and spring [1] Group 1: Maintenance Details - The Daqin Railway spans 653 kilometers, connecting Shanxi Datong in the west to Hebei Qinhuangdao in the east, and is the first double-track electrified heavy-load coal transport line in China [1] - During the maintenance period, the railway aims to maintain an average daily transport volume of over 1 million tons, despite a daily suspension of operations for 180 minutes [1] - The maintenance work includes replacing 107.438 kilometers of rail and 15,700 sleepers, as well as tasks such as tunnel remediation, cable updates, and contact network maintenance [1] Group 2: Resource Allocation - A total of 67 sets of large construction machinery, including tamping and screening machines, and 114 small machines like excavators, have been mobilized for the maintenance work, along with over 10,000 construction personnel [1] - The investment in human and machine resources has increased compared to the previous year, indicating a focus on improving construction quality and efficiency through detailed coordination and multi-disciplinary operations [1]