Geotechnical Challenges and Innovative Solutions in the Construction of the Underground Metro

The construction of urban underground metro systems poses significant geotechnical challenges, particularly in densely populated areas with complex subsurface conditions. This research investigates the geotechnical issues encountered during underground metro line construction and evaluates the innovative solutions implemented to mitigate these challenges. The primary objectives were to identify the critical geotechnical risks, assess the efficacy of the adopted techniques, and propose recommendations for future underground metro projects. A comprehensive case study approach was employed, involving extensive site investigations, and data collection from project reports. The findings revealed significant challenges related to groundwater management, soil heterogeneity, and nearby structures, necessitating advanced construction methods such as ground improvement techniques, dewatering systems, and soil-structure interaction analyses. The study concluded that a thorough understanding of site-specific geotechnical conditions and the judicious application of specialized techniques is crucial for successfully executing underground metro projects in urban environments. The insights derived from this research contribute to the body of knowledge in geotechnical engineering and provide valuable guidance for future urban infrastructure developments.