Core Viewpoint - The construction of the Mingshan Tunnel, a critical project for the Jiaozuo-Luoyang-Pingdingshan High-Speed Railway, is ongoing despite the challenges posed by complex geological conditions and the need for continuous safety monitoring [1][2]. Group 1: Project Overview - The Mingshan Tunnel is the longest tunnel in the Jiaozuo-Luoyang-Pingdingshan High-Speed Railway, measuring 6340.06 meters, and features the largest excavation cross-section for a soil pressure balance shield high-speed railway tunnel in the world [1]. - The tunnel construction is characterized by advanced technology and engineering scale, positioning it at the forefront of the industry [1]. Group 2: Safety Monitoring - The geological conditions are complex, primarily consisting of level V yellow earth, with a maximum burial depth of approximately 40 meters, leading to risks of settlement and collapse [2]. - Continuous safety monitoring is essential, even during the Chinese New Year holiday, with real-time data being collected and transmitted every two hours to relevant authorities [2]. - The monitoring process is meticulous, requiring high levels of patience and attention to detail, as even millimeter-level errors could pose significant engineering risks [2].