济南地铁6号线东山区间双线贯通

Group 1 - The construction of the Jinan Metro Line 6 has achieved a significant milestone with the completion of the double-line connection between Dongcang Station and Shandong University Station, 15 days ahead of schedule, enhancing the overall construction efficiency [1] - The East section of the line spans 996.6 meters and faces complex geological conditions, including hard rock and high water pressure, presenting unique challenges for construction [4] - The project utilized innovative "high-pressure abrasive jet - mechanical combined rock breaking" shield tunneling technology, improving rock excavation efficiency by 30% and reducing noise and vibration by 50% compared to traditional methods [7] Group 2 - The construction progress has set new records for similar complex geological conditions, achieving daily advancements of 18 rings and 27 meters for a single line, and 28 rings and 42 meters for double lines [7] - The successful double-line connection not only marks a major breakthrough in the construction of Jinan Metro Line 6 but also provides valuable experience for future similar projects [13] - The company aims to continue applying intelligent construction technologies in metro construction to create high-quality projects and support the high-quality development of urban transportation in Jinan [13]