地铁四期迎来首条全线“洞通”线路

Core Viewpoint - The successful completion of the "tunnel breakthrough" for the Hangzhou Metro Line 9 Phase II marks a significant milestone, indicating that the entire line is now connected and ready for further construction phases [1][2] Group 1: Project Overview - The Hangzhou Metro Line 9 Phase II spans approximately 10 kilometers, consisting entirely of underground sections with a total of 7 stations [1] - The stations include: Kangxin Road Station, Xingyuan Road Station, Kangtai Road Station, Xinghebei Road Station, Xingsheng Road Station, Xinchao Road Station, and Tangqi Station, with an average station spacing of 1.44 kilometers [1] - The specific section that achieved the breakthrough is between Xingyuan Road Station and Kangtai Road Station, with a tunnel length of about 1.6 kilometers [1] Group 2: Construction Challenges and Solutions - The project faced multiple construction challenges due to complex geological conditions in the Linping area, which includes various soil types such as silt and sand [1] - To address these challenges, a comprehensive analysis of geological conditions and existing structures was conducted, leading to enhanced control over the shield machine parameters to ensure safety [2] Group 3: Future Developments - The construction progress of Line 9 Phase II is ahead of schedule by six months, with an expected operational readiness by the end of 2026, although actual opening will depend on other factors [2] - Once completed, the total length of Line 9 will reach 39.6 kilometers, significantly improving connectivity between Donghu New City and the main urban area, and establishing Linping as a transportation hub in northern Hangzhou [2]