青岛地铁多条线路建设传捷报，多区间贯通车站封顶

Core Points - Qingdao Metro has made significant progress in the construction of multiple lines, including the completion of key milestones such as section connectivity and station topping out, laying a solid foundation for future operations [1][3][5][6] Group 1: Line Developments - The second phase of Line 2 has successfully passed acceptance for the Longchuan Road Station's auxiliary entrance, marking a critical step towards its operational readiness [3] - The construction of Line 5 has advanced with the successful completion of the right line shield tunneling between Ditie Dasha Station and Chuzhou Road Station on July 15 [3] - Line 6's second phase achieved a major milestone with the topping out of the main structure at Chaoyang Mountain Road Station on July 13, becoming the first underground station to reach this stage [3] Group 2: Multiple Line Progress - Line 9 is experiencing rapid progress, with Xijing Station achieving both the topping out of its main structure and the completion of the A entrance underground passage within a month [5] - The right line tunnel between Huicheng Road Station and Yuhuangling Station has been successfully completed using TBM tunneling [5] - The shield machine for the section between Chengzi Station and Huacheng Road Station has also successfully completed its tunneling operations [5] Group 3: Additional Line Achievements - The shield tunneling for the section between Huacheng Road Station and Zhengyang Middle Road Station has commenced with the "Municipal Iron Army No. 11" shield machine [6] - The TBM left line tunneling between Tianshan First Road Station and Tianshan Second Road Station on Line 15 has successfully achieved dual line connectivity [6] - The main structure of Gouchai Station, including the 3rd and 4th ventilation shafts, has been completed on schedule, facilitating further project advancement [6]